=1))throw new Error("invalid cell size");return c=Math.floor(Math.log(r)/Math.LN2),x()},E.thresholds=function(r){return arguments.length?(y="function"==typeof r?r:Array.isArray(r)?o(t.call(r)):o(r),E):y},E.bandwidth=function(r){if(!arguments.length)return Math.sqrt(f*(f+1));if(!((r=+r)>=0))throw new Error("invalid bandwidth");return f=(Math.sqrt(4*r*r+1)-1)/2,x()},E},r.contours=h,Object.defineProperty(r,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-contour/package.json b/node_modules/d3-contour/package.json
new file mode 100644
index 00000000..38de8c16
--- /dev/null
+++ b/node_modules/d3-contour/package.json
@@ -0,0 +1,94 @@
+{
+ "_from": "d3-contour@4",
+ "_id": "d3-contour@4.0.0",
+ "_inBundle": false,
+ "_integrity": "sha512-7aQo0QHUTu/Ko3cP9YK9yUTxtoDEiDGwnBHyLxG5M4vqlBkO/uixMRele3nfsfj6UXOcuReVpVXzAboGraYIJw==",
+ "_location": "/d3-contour",
+ "_moduleAliases": {
+ "d3-contour": "./src/index.js"
+ },
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-contour@4",
+ "name": "d3-contour",
+ "escapedName": "d3-contour",
+ "rawSpec": "4",
+ "saveSpec": null,
+ "fetchSpec": "4"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-contour/-/d3-contour-4.0.0.tgz",
+ "_shasum": "5a1337c6da0d528479acdb5db54bc81a0ff2ec6b",
+ "_spec": "d3-contour@4",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-contour/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-array": "^3.2.0"
+ },
+ "deprecated": false,
+ "description": "Compute contour polygons using marching squares.",
+ "devDependencies": {
+ "d3-axis": "3",
+ "d3-dsv": "3",
+ "d3-fetch": "3",
+ "d3-geo": "3",
+ "d3-polygon": "3",
+ "d3-scale": "4",
+ "d3-selection": "3",
+ "eslint": "8",
+ "htl": "^0.3.1",
+ "js-beautify": "1",
+ "jsdom": "19",
+ "mocha": "10",
+ "module-alias": "2",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-contour.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-contour/",
+ "jsdelivr": "dist/d3-contour.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "contour",
+ "isoline"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-contour",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-contour.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && rollup -c",
+ "test": "mkdir -p test/output && mocha -r module-alias/register 'test/**/*-test.js' test/snapshot.js && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-contour.min.js",
+ "version": "4.0.0"
+}
diff --git a/node_modules/d3-contour/src/area.js b/node_modules/d3-contour/src/area.js
new file mode 100644
index 00000000..2157a7ef
--- /dev/null
+++ b/node_modules/d3-contour/src/area.js
@@ -0,0 +1,5 @@
+export default function(ring) {
+ var i = 0, n = ring.length, area = ring[n - 1][1] * ring[0][0] - ring[n - 1][0] * ring[0][1];
+ while (++i < n) area += ring[i - 1][1] * ring[i][0] - ring[i - 1][0] * ring[i][1];
+ return area;
+}
diff --git a/node_modules/d3-contour/src/array.js b/node_modules/d3-contour/src/array.js
new file mode 100644
index 00000000..d2361352
--- /dev/null
+++ b/node_modules/d3-contour/src/array.js
@@ -0,0 +1,3 @@
+var array = Array.prototype;
+
+export var slice = array.slice;
diff --git a/node_modules/d3-contour/src/ascending.js b/node_modules/d3-contour/src/ascending.js
new file mode 100644
index 00000000..8939af70
--- /dev/null
+++ b/node_modules/d3-contour/src/ascending.js
@@ -0,0 +1,3 @@
+export default function(a, b) {
+ return a - b;
+}
diff --git a/node_modules/d3-contour/src/constant.js b/node_modules/d3-contour/src/constant.js
new file mode 100644
index 00000000..3487c0dd
--- /dev/null
+++ b/node_modules/d3-contour/src/constant.js
@@ -0,0 +1 @@
+export default x => () => x;
diff --git a/node_modules/d3-contour/src/contains.js b/node_modules/d3-contour/src/contains.js
new file mode 100644
index 00000000..f364b354
--- /dev/null
+++ b/node_modules/d3-contour/src/contains.js
@@ -0,0 +1,27 @@
+export default function(ring, hole) {
+ var i = -1, n = hole.length, c;
+ while (++i < n) if (c = ringContains(ring, hole[i])) return c;
+ return 0;
+}
+
+function ringContains(ring, point) {
+ var x = point[0], y = point[1], contains = -1;
+ for (var i = 0, n = ring.length, j = n - 1; i < n; j = i++) {
+ var pi = ring[i], xi = pi[0], yi = pi[1], pj = ring[j], xj = pj[0], yj = pj[1];
+ if (segmentContains(pi, pj, point)) return 0;
+ if (((yi > y) !== (yj > y)) && ((x < (xj - xi) * (y - yi) / (yj - yi) + xi))) contains = -contains;
+ }
+ return contains;
+}
+
+function segmentContains(a, b, c) {
+ var i; return collinear(a, b, c) && within(a[i = +(a[0] === b[0])], c[i], b[i]);
+}
+
+function collinear(a, b, c) {
+ return (b[0] - a[0]) * (c[1] - a[1]) === (c[0] - a[0]) * (b[1] - a[1]);
+}
+
+function within(p, q, r) {
+ return p <= q && q <= r || r <= q && q <= p;
+}
diff --git a/node_modules/d3-contour/src/contours.js b/node_modules/d3-contour/src/contours.js
new file mode 100644
index 00000000..d1637109
--- /dev/null
+++ b/node_modules/d3-contour/src/contours.js
@@ -0,0 +1,200 @@
+import {extent, thresholdSturges, ticks, tickStep} from "d3-array";
+import {slice} from "./array.js";
+import ascending from "./ascending.js";
+import area from "./area.js";
+import constant from "./constant.js";
+import contains from "./contains.js";
+import noop from "./noop.js";
+
+var cases = [
+ [],
+ [[[1.0, 1.5], [0.5, 1.0]]],
+ [[[1.5, 1.0], [1.0, 1.5]]],
+ [[[1.5, 1.0], [0.5, 1.0]]],
+ [[[1.0, 0.5], [1.5, 1.0]]],
+ [[[1.0, 1.5], [0.5, 1.0]], [[1.0, 0.5], [1.5, 1.0]]],
+ [[[1.0, 0.5], [1.0, 1.5]]],
+ [[[1.0, 0.5], [0.5, 1.0]]],
+ [[[0.5, 1.0], [1.0, 0.5]]],
+ [[[1.0, 1.5], [1.0, 0.5]]],
+ [[[0.5, 1.0], [1.0, 0.5]], [[1.5, 1.0], [1.0, 1.5]]],
+ [[[1.5, 1.0], [1.0, 0.5]]],
+ [[[0.5, 1.0], [1.5, 1.0]]],
+ [[[1.0, 1.5], [1.5, 1.0]]],
+ [[[0.5, 1.0], [1.0, 1.5]]],
+ []
+];
+
+export default function() {
+ var dx = 1,
+ dy = 1,
+ threshold = thresholdSturges,
+ smooth = smoothLinear;
+
+ function contours(values) {
+ var tz = threshold(values);
+
+ // Convert number of thresholds into uniform thresholds.
+ if (!Array.isArray(tz)) {
+ const e = extent(values), ts = tickStep(e[0], e[1], tz);
+ tz = ticks(Math.floor(e[0] / ts) * ts, Math.floor(e[1] / ts - 1) * ts, tz);
+ } else {
+ tz = tz.slice().sort(ascending);
+ }
+
+ return tz.map(value => contour(values, value));
+ }
+
+ // Accumulate, smooth contour rings, assign holes to exterior rings.
+ // Based on https://github.com/mbostock/shapefile/blob/v0.6.2/shp/polygon.js
+ function contour(values, value) {
+ var polygons = [],
+ holes = [];
+
+ isorings(values, value, function(ring) {
+ smooth(ring, values, value);
+ if (area(ring) > 0) polygons.push([ring]);
+ else holes.push(ring);
+ });
+
+ holes.forEach(function(hole) {
+ for (var i = 0, n = polygons.length, polygon; i < n; ++i) {
+ if (contains((polygon = polygons[i])[0], hole) !== -1) {
+ polygon.push(hole);
+ return;
+ }
+ }
+ });
+
+ return {
+ type: "MultiPolygon",
+ value: value,
+ coordinates: polygons
+ };
+ }
+
+ // Marching squares with isolines stitched into rings.
+ // Based on https://github.com/topojson/topojson-client/blob/v3.0.0/src/stitch.js
+ function isorings(values, value, callback) {
+ var fragmentByStart = new Array,
+ fragmentByEnd = new Array,
+ x, y, t0, t1, t2, t3;
+
+ // Special case for the first row (y = -1, t2 = t3 = 0).
+ x = y = -1;
+ t1 = values[0] >= value;
+ cases[t1 << 1].forEach(stitch);
+ while (++x < dx - 1) {
+ t0 = t1, t1 = values[x + 1] >= value;
+ cases[t0 | t1 << 1].forEach(stitch);
+ }
+ cases[t1 << 0].forEach(stitch);
+
+ // General case for the intermediate rows.
+ while (++y < dy - 1) {
+ x = -1;
+ t1 = values[y * dx + dx] >= value;
+ t2 = values[y * dx] >= value;
+ cases[t1 << 1 | t2 << 2].forEach(stitch);
+ while (++x < dx - 1) {
+ t0 = t1, t1 = values[y * dx + dx + x + 1] >= value;
+ t3 = t2, t2 = values[y * dx + x + 1] >= value;
+ cases[t0 | t1 << 1 | t2 << 2 | t3 << 3].forEach(stitch);
+ }
+ cases[t1 | t2 << 3].forEach(stitch);
+ }
+
+ // Special case for the last row (y = dy - 1, t0 = t1 = 0).
+ x = -1;
+ t2 = values[y * dx] >= value;
+ cases[t2 << 2].forEach(stitch);
+ while (++x < dx - 1) {
+ t3 = t2, t2 = values[y * dx + x + 1] >= value;
+ cases[t2 << 2 | t3 << 3].forEach(stitch);
+ }
+ cases[t2 << 3].forEach(stitch);
+
+ function stitch(line) {
+ var start = [line[0][0] + x, line[0][1] + y],
+ end = [line[1][0] + x, line[1][1] + y],
+ startIndex = index(start),
+ endIndex = index(end),
+ f, g;
+ if (f = fragmentByEnd[startIndex]) {
+ if (g = fragmentByStart[endIndex]) {
+ delete fragmentByEnd[f.end];
+ delete fragmentByStart[g.start];
+ if (f === g) {
+ f.ring.push(end);
+ callback(f.ring);
+ } else {
+ fragmentByStart[f.start] = fragmentByEnd[g.end] = {start: f.start, end: g.end, ring: f.ring.concat(g.ring)};
+ }
+ } else {
+ delete fragmentByEnd[f.end];
+ f.ring.push(end);
+ fragmentByEnd[f.end = endIndex] = f;
+ }
+ } else if (f = fragmentByStart[endIndex]) {
+ if (g = fragmentByEnd[startIndex]) {
+ delete fragmentByStart[f.start];
+ delete fragmentByEnd[g.end];
+ if (f === g) {
+ f.ring.push(end);
+ callback(f.ring);
+ } else {
+ fragmentByStart[g.start] = fragmentByEnd[f.end] = {start: g.start, end: f.end, ring: g.ring.concat(f.ring)};
+ }
+ } else {
+ delete fragmentByStart[f.start];
+ f.ring.unshift(start);
+ fragmentByStart[f.start = startIndex] = f;
+ }
+ } else {
+ fragmentByStart[startIndex] = fragmentByEnd[endIndex] = {start: startIndex, end: endIndex, ring: [start, end]};
+ }
+ }
+ }
+
+ function index(point) {
+ return point[0] * 2 + point[1] * (dx + 1) * 4;
+ }
+
+ function smoothLinear(ring, values, value) {
+ ring.forEach(function(point) {
+ var x = point[0],
+ y = point[1],
+ xt = x | 0,
+ yt = y | 0,
+ v0,
+ v1 = values[yt * dx + xt];
+ if (x > 0 && x < dx && xt === x) {
+ v0 = values[yt * dx + xt - 1];
+ point[0] = x + (value - v0) / (v1 - v0) - 0.5;
+ }
+ if (y > 0 && y < dy && yt === y) {
+ v0 = values[(yt - 1) * dx + xt];
+ point[1] = y + (value - v0) / (v1 - v0) - 0.5;
+ }
+ });
+ }
+
+ contours.contour = contour;
+
+ contours.size = function(_) {
+ if (!arguments.length) return [dx, dy];
+ var _0 = Math.floor(_[0]), _1 = Math.floor(_[1]);
+ if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size");
+ return dx = _0, dy = _1, contours;
+ };
+
+ contours.thresholds = function(_) {
+ return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant(slice.call(_)) : constant(_), contours) : threshold;
+ };
+
+ contours.smooth = function(_) {
+ return arguments.length ? (smooth = _ ? smoothLinear : noop, contours) : smooth === smoothLinear;
+ };
+
+ return contours;
+}
diff --git a/node_modules/d3-contour/src/density.js b/node_modules/d3-contour/src/density.js
new file mode 100644
index 00000000..ab995734
--- /dev/null
+++ b/node_modules/d3-contour/src/density.js
@@ -0,0 +1,149 @@
+import {blur2, max, ticks} from "d3-array";
+import {slice} from "./array.js";
+import constant from "./constant.js";
+import Contours from "./contours.js";
+
+function defaultX(d) {
+ return d[0];
+}
+
+function defaultY(d) {
+ return d[1];
+}
+
+function defaultWeight() {
+ return 1;
+}
+
+export default function() {
+ var x = defaultX,
+ y = defaultY,
+ weight = defaultWeight,
+ dx = 960,
+ dy = 500,
+ r = 20, // blur radius
+ k = 2, // log2(grid cell size)
+ o = r * 3, // grid offset, to pad for blur
+ n = (dx + o * 2) >> k, // grid width
+ m = (dy + o * 2) >> k, // grid height
+ threshold = constant(20);
+
+ function grid(data) {
+ var values = new Float32Array(n * m),
+ pow2k = Math.pow(2, -k),
+ i = -1;
+
+ for (const d of data) {
+ var xi = (x(d, ++i, data) + o) * pow2k,
+ yi = (y(d, i, data) + o) * pow2k,
+ wi = +weight(d, i, data);
+ if (xi >= 0 && xi < n && yi >= 0 && yi < m) {
+ var x0 = Math.floor(xi),
+ y0 = Math.floor(yi),
+ xt = xi - x0 - 0.5,
+ yt = yi - y0 - 0.5;
+ values[x0 + y0 * n] += (1 - xt) * (1 - yt) * wi;
+ values[x0 + 1 + y0 * n] += xt * (1 - yt) * wi;
+ values[x0 + 1 + (y0 + 1) * n] += xt * yt * wi;
+ values[x0 + (y0 + 1) * n] += (1 - xt) * yt * wi;
+ }
+ }
+
+ blur2({data: values, width: n, height: m}, r * pow2k);
+ return values;
+ }
+
+ function density(data) {
+ var values = grid(data),
+ tz = threshold(values),
+ pow4k = Math.pow(2, 2 * k);
+
+ // Convert number of thresholds into uniform thresholds.
+ if (!Array.isArray(tz)) {
+ tz = ticks(Number.MIN_VALUE, max(values) / pow4k, tz);
+ }
+
+ return Contours()
+ .size([n, m])
+ .thresholds(tz.map(d => d * pow4k))
+ (values)
+ .map((c, i) => (c.value = +tz[i], transform(c)));
+ }
+
+ density.contours = function(data) {
+ var values = grid(data),
+ contours = Contours().size([n, m]),
+ pow4k = Math.pow(2, 2 * k),
+ contour = value => {
+ value = +value;
+ var c = transform(contours.contour(values, value * pow4k));
+ c.value = value; // preserve exact threshold value
+ return c;
+ };
+ Object.defineProperty(contour, "max", {get: () => max(values) / pow4k});
+ return contour;
+ };
+
+ function transform(geometry) {
+ geometry.coordinates.forEach(transformPolygon);
+ return geometry;
+ }
+
+ function transformPolygon(coordinates) {
+ coordinates.forEach(transformRing);
+ }
+
+ function transformRing(coordinates) {
+ coordinates.forEach(transformPoint);
+ }
+
+ // TODO Optimize.
+ function transformPoint(coordinates) {
+ coordinates[0] = coordinates[0] * Math.pow(2, k) - o;
+ coordinates[1] = coordinates[1] * Math.pow(2, k) - o;
+ }
+
+ function resize() {
+ o = r * 3;
+ n = (dx + o * 2) >> k;
+ m = (dy + o * 2) >> k;
+ return density;
+ }
+
+ density.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), density) : x;
+ };
+
+ density.y = function(_) {
+ return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), density) : y;
+ };
+
+ density.weight = function(_) {
+ return arguments.length ? (weight = typeof _ === "function" ? _ : constant(+_), density) : weight;
+ };
+
+ density.size = function(_) {
+ if (!arguments.length) return [dx, dy];
+ var _0 = +_[0], _1 = +_[1];
+ if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size");
+ return dx = _0, dy = _1, resize();
+ };
+
+ density.cellSize = function(_) {
+ if (!arguments.length) return 1 << k;
+ if (!((_ = +_) >= 1)) throw new Error("invalid cell size");
+ return k = Math.floor(Math.log(_) / Math.LN2), resize();
+ };
+
+ density.thresholds = function(_) {
+ return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant(slice.call(_)) : constant(_), density) : threshold;
+ };
+
+ density.bandwidth = function(_) {
+ if (!arguments.length) return Math.sqrt(r * (r + 1));
+ if (!((_ = +_) >= 0)) throw new Error("invalid bandwidth");
+ return r = (Math.sqrt(4 * _ * _ + 1) - 1) / 2, resize();
+ };
+
+ return density;
+}
diff --git a/node_modules/d3-contour/src/index.js b/node_modules/d3-contour/src/index.js
new file mode 100644
index 00000000..8e6b5f0d
--- /dev/null
+++ b/node_modules/d3-contour/src/index.js
@@ -0,0 +1,2 @@
+export {default as contours} from "./contours.js";
+export {default as contourDensity} from "./density.js";
diff --git a/node_modules/d3-contour/src/noop.js b/node_modules/d3-contour/src/noop.js
new file mode 100644
index 00000000..6ab80bc8
--- /dev/null
+++ b/node_modules/d3-contour/src/noop.js
@@ -0,0 +1 @@
+export default function() {}
diff --git a/node_modules/d3-delaunay/LICENSE b/node_modules/d3-delaunay/LICENSE
new file mode 100644
index 00000000..3a6ada62
--- /dev/null
+++ b/node_modules/d3-delaunay/LICENSE
@@ -0,0 +1,14 @@
+Copyright 2018-2021 Observable, Inc.
+Copyright 2021 Mapbox
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-delaunay/README.md b/node_modules/d3-delaunay/README.md
new file mode 100644
index 00000000..01dbfee3
--- /dev/null
+++ b/node_modules/d3-delaunay/README.md
@@ -0,0 +1,216 @@
+# d3-delaunay
+
+
Georgy “The Voronator” Voronoy
+
+This is a fast library for computing the [Voronoi diagram](https://en.wikipedia.org/wiki/Voronoi_diagram) of a set of two-dimensional points. It is based on [Delaunator](https://github.com/mapbox/delaunator), a fast library for computing the [Delaunay triangulation](https://en.wikipedia.org/wiki/Delaunay_triangulation) using [sweep algorithms](https://github.com/mapbox/delaunator/blob/master/README.md#papers). The Voronoi diagram is constructed by connecting the circumcenters of adjacent triangles in the Delaunay triangulation.
+
+For an interactive explanation of how this library works, see [The Delaunay’s Dual](https://observablehq.com/@mbostock/the-delaunays-dual).
+
+## Installing
+
+If you use npm, `npm install d3-delaunay`. You can also download the [latest release on GitHub](https://github.com/d3/d3-delaunay/releases/latest). For vanilla HTML in modern browsers, import d3-delaunay from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-delaunay’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+
+## API Reference
+
+### Delaunay
+
+# new Delaunay (points ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the Delaunay triangulation for the given flat array [*x0*, *y0*, *x1*, *y1*, …] of *points*.
+
+```js
+const delaunay = new Delaunay(Float64Array.of(0, 0, 0, 1, 1, 0, 1, 1));
+```
+
+# Delaunay.from (points [, fx [, fy [, that ]]]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the Delaunay triangulation for the given array or iterable of *points*. If *fx* and *fy* are not specified, then *points* is assumed to be an array of two-element arrays of numbers: [[*x0*, *y0*], [*x1*, *y1*], …]. Otherwise, *fx* and *fy* are functions that are invoked for each element in the *points* array in order, and must return the respective *x*- and *y*-coordinate for each point. If *that* is specified, the functions *fx* and *fy* are invoked with *that* as *this*. (See [Array.from](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/from) for reference.)
+
+```js
+const delaunay = Delaunay.from([[0, 0], [0, 1], [1, 0], [1, 1]]);
+```
+
+# delaunay .points
+
+The coordinates of the points as an array [*x0*, *y0*, *x1*, *y1*, …]. Typically, this is a Float64Array, however you can use any array-like type in the [constructor](#new_Delaunay).
+
+# delaunay .halfedges
+
+The halfedge indexes as an Int32Array [*j0*, *j1*, …]. For each index 0 ≤ *i* < *halfedges*.length, there is a halfedge from triangle vertex *j* = *halfedges*[*i*] to triangle vertex *i*. Equivalently, this means that triangle ⌊*i* / 3⌋ is adjacent to triangle ⌊*j* / 3⌋. If *j* is negative, then triangle ⌊*i* / 3⌋ is an exterior triangle on the [convex hull](#delaunay_hull). For example, to render the internal edges of the Delaunay triangulation:
+
+```js
+const {points, halfedges, triangles} = delaunay;
+for (let i = 0, n = halfedges.length; i < n; ++i) {
+ const j = halfedges[i];
+ if (j < i) continue;
+ const ti = triangles[i];
+ const tj = triangles[j];
+ context.moveTo(points[ti * 2], points[ti * 2 + 1]);
+ context.lineTo(points[tj * 2], points[tj * 2 + 1]);
+}
+```
+
+See also [*delaunay*.render](#delaunay_render).
+
+# delaunay .hull
+
+An Int32Array of point indexes that form the convex hull in counterclockwise order. If the points are collinear, returns them ordered.
+
+See also [*delaunay*.renderHull](#delaunay_renderHull).
+
+# delaunay .triangles
+
+The triangle vertex indexes as an Uint32Array [*i0*, *j0*, *k0*, *i1*, *j1*, *k1*, …]. Each contiguous triplet of indexes *i*, *j*, *k* forms a counterclockwise triangle. The coordinates of the triangle’s points can be found by going through [*delaunay*.points](#delaunay_points). For example, to render triangle *i*:
+
+```js
+const {points, triangles} = delaunay;
+const t0 = triangles[i * 3 + 0];
+const t1 = triangles[i * 3 + 1];
+const t2 = triangles[i * 3 + 2];
+context.moveTo(points[t0 * 2], points[t0 * 2 + 1]);
+context.lineTo(points[t1 * 2], points[t1 * 2 + 1]);
+context.lineTo(points[t2 * 2], points[t2 * 2 + 1]);
+context.closePath();
+```
+
+See also [*delaunay*.renderTriangle](#delaunay_renderTriangle).
+
+# delaunay .inedges
+
+The incoming halfedge indexes as a Int32Array [*e0*, *e1*, *e2*, …]. For each point *i*, *inedges*[*i*] is the halfedge index *e* of an incoming halfedge. For coincident points, the halfedge index is -1; for points on the convex hull, the incoming halfedge is on the convex hull; for other points, the choice of incoming halfedge is arbitrary. The *inedges* table can be used to traverse the Delaunay triangulation; see also [*delaunay*.neighbors](#delaunay_neighbors).
+
+# delaunay .find (x , y [, i ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the index of the input point that is closest to the specified point ⟨*x*, *y*⟩. The search is started at the specified point *i*. If *i* is not specified, it defaults to zero.
+
+# delaunay .neighbors (i ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns an iterable over the indexes of the neighboring points to the specified point *i*. The iterable is empty if *i* is a coincident point.
+
+# delaunay .render ([context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+# delaunay .renderHull ([context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+# delaunay .renderTriangle (i [, context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+# delaunay .renderPoints (\[context \]\[, radius \]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Renders the input points of the Delaunay triangulation to the specified *context* as circles with the specified *radius*. If *radius* is not specified, it defaults to 2. The specified *context* must implement the *context*.moveTo and *context*.arc methods from the [CanvasPathMethods API](https://www.w3.org/TR/2dcontext/#canvaspathmethods). If a *context* is not specified, an SVG path string is returned instead.
+
+# delaunay .hullPolygon() [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the closed polygon [[*x0*, *y0*], [*x1*, *y1*], …, [*x0*, *y0*]] representing the convex hull.
+
+# delaunay .trianglePolygons() [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns an iterable over the [polygons for each triangle](#delaunay_trianglePolygon), in order.
+
+# delaunay .trianglePolygon(i ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the closed polygon [[*x0*, *y0*], [*x1*, *y1*], [*x2*, *y2*], [*x0*, *y0*]] representing the triangle *i*.
+
+# delaunay .update () [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Updates the triangulation after the points have been modified in-place.
+
+# delaunay .voronoi ([bounds ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/delaunay.js "Source")
+
+Returns the [Voronoi diagram](#voronoi) for the associated [points](#delaunay_points). When rendering, the diagram will be clipped to the specified *bounds* = [*xmin*, *ymin*, *xmax*, *ymax*]. If *bounds* is not specified, it defaults to [0, 0, 960, 500]. See [To Infinity and Back Again](https://observablehq.com/@mbostock/to-infinity-and-back-again) for an interactive explanation of Voronoi cell clipping.
+
+The Voronoi diagram is returned even in degenerate cases where no triangulation exists — namely 0, 1 or 2 points, and collinear points.
+
+### Voronoi
+
+# voronoi .delaunay
+
+The Voronoi diagram’s associated [Delaunay triangulation](#delaunay).
+
+# voronoi .circumcenters
+
+The [circumcenters](http://mathworld.wolfram.com/Circumcenter.html) of the Delaunay triangles as a Float64Array [*cx0*, *cy0*, *cx1*, *cy1*, …]. Each contiguous pair of coordinates *cx*, *cy* is the circumcenter for the corresponding triangle. These circumcenters form the coordinates of the Voronoi cell polygons.
+
+# voronoi .vectors
+
+A Float64Array [*vx0*, *vy0*, *wx0*, *wy0*, …] where each non-zero quadruple describes an open (infinite) cell on the outer hull, giving the directions of two open half-lines.
+
+# voronoi .xmin # voronoi .ymin # voronoi .xmax # voronoi .ymax # voronoi .contains (i , x , y ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/cell.js "Source")
+
+Returns true if the cell with the specified index *i* contains the specified point ⟨*x*, *y*⟩. (This method is not affected by the associated Voronoi diagram’s viewport [bounds](#voronoi_xmin).)
+
+# voronoi .neighbors (i ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+Returns an iterable over the indexes of the cells that share a common edge with the specified cell *i*. Voronoi neighbors are always neighbors on the Delaunay graph, but the converse is false when the common edge has been clipped out by the Voronoi diagram’s viewport.
+
+# voronoi .render ([context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+# voronoi .renderBounds ([context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+# voronoi .renderCell (i [, context ]) [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+# voronoi .cellPolygons () [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+Returns an iterable over the non-empty [polygons for each cell](#voronoi_cellPolygon), with the cell index as property.
+
+# voronoi .cellPolygon (i ) [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+Returns the convex, closed polygon [[*x0*, *y0*], [*x1*, *y1*], …, [*x0*, *y0*]] representing the cell for the specified point *i*.
+
+# voronoi .update () [<>](https://github.com/d3/d3-delaunay/blob/master/src/voronoi.js "Source")
+
+Updates the Voronoi diagram and underlying triangulation after the points have been modified in-place — useful for Lloyd’s relaxation.
diff --git a/node_modules/d3-delaunay/dist/d3-delaunay.js b/node_modules/d3-delaunay/dist/d3-delaunay.js
new file mode 100644
index 00000000..b8297c68
--- /dev/null
+++ b/node_modules/d3-delaunay/dist/d3-delaunay.js
@@ -0,0 +1,1386 @@
+// https://github.com/d3/d3-delaunay v6.0.2 Copyright 2018-2021 Observable, Inc., 2021 Mapbox
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+const epsilon$1 = 1.1102230246251565e-16;
+const splitter = 134217729;
+const resulterrbound = (3 + 8 * epsilon$1) * epsilon$1;
+
+// fast_expansion_sum_zeroelim routine from oritinal code
+function sum(elen, e, flen, f, h) {
+ let Q, Qnew, hh, bvirt;
+ let enow = e[0];
+ let fnow = f[0];
+ let eindex = 0;
+ let findex = 0;
+ if ((fnow > enow) === (fnow > -enow)) {
+ Q = enow;
+ enow = e[++eindex];
+ } else {
+ Q = fnow;
+ fnow = f[++findex];
+ }
+ let hindex = 0;
+ if (eindex < elen && findex < flen) {
+ if ((fnow > enow) === (fnow > -enow)) {
+ Qnew = enow + Q;
+ hh = Q - (Qnew - enow);
+ enow = e[++eindex];
+ } else {
+ Qnew = fnow + Q;
+ hh = Q - (Qnew - fnow);
+ fnow = f[++findex];
+ }
+ Q = Qnew;
+ if (hh !== 0) {
+ h[hindex++] = hh;
+ }
+ while (eindex < elen && findex < flen) {
+ if ((fnow > enow) === (fnow > -enow)) {
+ Qnew = Q + enow;
+ bvirt = Qnew - Q;
+ hh = Q - (Qnew - bvirt) + (enow - bvirt);
+ enow = e[++eindex];
+ } else {
+ Qnew = Q + fnow;
+ bvirt = Qnew - Q;
+ hh = Q - (Qnew - bvirt) + (fnow - bvirt);
+ fnow = f[++findex];
+ }
+ Q = Qnew;
+ if (hh !== 0) {
+ h[hindex++] = hh;
+ }
+ }
+ }
+ while (eindex < elen) {
+ Qnew = Q + enow;
+ bvirt = Qnew - Q;
+ hh = Q - (Qnew - bvirt) + (enow - bvirt);
+ enow = e[++eindex];
+ Q = Qnew;
+ if (hh !== 0) {
+ h[hindex++] = hh;
+ }
+ }
+ while (findex < flen) {
+ Qnew = Q + fnow;
+ bvirt = Qnew - Q;
+ hh = Q - (Qnew - bvirt) + (fnow - bvirt);
+ fnow = f[++findex];
+ Q = Qnew;
+ if (hh !== 0) {
+ h[hindex++] = hh;
+ }
+ }
+ if (Q !== 0 || hindex === 0) {
+ h[hindex++] = Q;
+ }
+ return hindex;
+}
+
+function estimate(elen, e) {
+ let Q = e[0];
+ for (let i = 1; i < elen; i++) Q += e[i];
+ return Q;
+}
+
+function vec(n) {
+ return new Float64Array(n);
+}
+
+const ccwerrboundA = (3 + 16 * epsilon$1) * epsilon$1;
+const ccwerrboundB = (2 + 12 * epsilon$1) * epsilon$1;
+const ccwerrboundC = (9 + 64 * epsilon$1) * epsilon$1 * epsilon$1;
+
+const B = vec(4);
+const C1 = vec(8);
+const C2 = vec(12);
+const D = vec(16);
+const u = vec(4);
+
+function orient2dadapt(ax, ay, bx, by, cx, cy, detsum) {
+ let acxtail, acytail, bcxtail, bcytail;
+ let bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0, u3;
+
+ const acx = ax - cx;
+ const bcx = bx - cx;
+ const acy = ay - cy;
+ const bcy = by - cy;
+
+ s1 = acx * bcy;
+ c = splitter * acx;
+ ahi = c - (c - acx);
+ alo = acx - ahi;
+ c = splitter * bcy;
+ bhi = c - (c - bcy);
+ blo = bcy - bhi;
+ s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
+ t1 = acy * bcx;
+ c = splitter * acy;
+ ahi = c - (c - acy);
+ alo = acy - ahi;
+ c = splitter * bcx;
+ bhi = c - (c - bcx);
+ blo = bcx - bhi;
+ t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
+ _i = s0 - t0;
+ bvirt = s0 - _i;
+ B[0] = s0 - (_i + bvirt) + (bvirt - t0);
+ _j = s1 + _i;
+ bvirt = _j - s1;
+ _0 = s1 - (_j - bvirt) + (_i - bvirt);
+ _i = _0 - t1;
+ bvirt = _0 - _i;
+ B[1] = _0 - (_i + bvirt) + (bvirt - t1);
+ u3 = _j + _i;
+ bvirt = u3 - _j;
+ B[2] = _j - (u3 - bvirt) + (_i - bvirt);
+ B[3] = u3;
+
+ let det = estimate(4, B);
+ let errbound = ccwerrboundB * detsum;
+ if (det >= errbound || -det >= errbound) {
+ return det;
+ }
+
+ bvirt = ax - acx;
+ acxtail = ax - (acx + bvirt) + (bvirt - cx);
+ bvirt = bx - bcx;
+ bcxtail = bx - (bcx + bvirt) + (bvirt - cx);
+ bvirt = ay - acy;
+ acytail = ay - (acy + bvirt) + (bvirt - cy);
+ bvirt = by - bcy;
+ bcytail = by - (bcy + bvirt) + (bvirt - cy);
+
+ if (acxtail === 0 && acytail === 0 && bcxtail === 0 && bcytail === 0) {
+ return det;
+ }
+
+ errbound = ccwerrboundC * detsum + resulterrbound * Math.abs(det);
+ det += (acx * bcytail + bcy * acxtail) - (acy * bcxtail + bcx * acytail);
+ if (det >= errbound || -det >= errbound) return det;
+
+ s1 = acxtail * bcy;
+ c = splitter * acxtail;
+ ahi = c - (c - acxtail);
+ alo = acxtail - ahi;
+ c = splitter * bcy;
+ bhi = c - (c - bcy);
+ blo = bcy - bhi;
+ s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
+ t1 = acytail * bcx;
+ c = splitter * acytail;
+ ahi = c - (c - acytail);
+ alo = acytail - ahi;
+ c = splitter * bcx;
+ bhi = c - (c - bcx);
+ blo = bcx - bhi;
+ t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
+ _i = s0 - t0;
+ bvirt = s0 - _i;
+ u[0] = s0 - (_i + bvirt) + (bvirt - t0);
+ _j = s1 + _i;
+ bvirt = _j - s1;
+ _0 = s1 - (_j - bvirt) + (_i - bvirt);
+ _i = _0 - t1;
+ bvirt = _0 - _i;
+ u[1] = _0 - (_i + bvirt) + (bvirt - t1);
+ u3 = _j + _i;
+ bvirt = u3 - _j;
+ u[2] = _j - (u3 - bvirt) + (_i - bvirt);
+ u[3] = u3;
+ const C1len = sum(4, B, 4, u, C1);
+
+ s1 = acx * bcytail;
+ c = splitter * acx;
+ ahi = c - (c - acx);
+ alo = acx - ahi;
+ c = splitter * bcytail;
+ bhi = c - (c - bcytail);
+ blo = bcytail - bhi;
+ s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
+ t1 = acy * bcxtail;
+ c = splitter * acy;
+ ahi = c - (c - acy);
+ alo = acy - ahi;
+ c = splitter * bcxtail;
+ bhi = c - (c - bcxtail);
+ blo = bcxtail - bhi;
+ t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
+ _i = s0 - t0;
+ bvirt = s0 - _i;
+ u[0] = s0 - (_i + bvirt) + (bvirt - t0);
+ _j = s1 + _i;
+ bvirt = _j - s1;
+ _0 = s1 - (_j - bvirt) + (_i - bvirt);
+ _i = _0 - t1;
+ bvirt = _0 - _i;
+ u[1] = _0 - (_i + bvirt) + (bvirt - t1);
+ u3 = _j + _i;
+ bvirt = u3 - _j;
+ u[2] = _j - (u3 - bvirt) + (_i - bvirt);
+ u[3] = u3;
+ const C2len = sum(C1len, C1, 4, u, C2);
+
+ s1 = acxtail * bcytail;
+ c = splitter * acxtail;
+ ahi = c - (c - acxtail);
+ alo = acxtail - ahi;
+ c = splitter * bcytail;
+ bhi = c - (c - bcytail);
+ blo = bcytail - bhi;
+ s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);
+ t1 = acytail * bcxtail;
+ c = splitter * acytail;
+ ahi = c - (c - acytail);
+ alo = acytail - ahi;
+ c = splitter * bcxtail;
+ bhi = c - (c - bcxtail);
+ blo = bcxtail - bhi;
+ t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);
+ _i = s0 - t0;
+ bvirt = s0 - _i;
+ u[0] = s0 - (_i + bvirt) + (bvirt - t0);
+ _j = s1 + _i;
+ bvirt = _j - s1;
+ _0 = s1 - (_j - bvirt) + (_i - bvirt);
+ _i = _0 - t1;
+ bvirt = _0 - _i;
+ u[1] = _0 - (_i + bvirt) + (bvirt - t1);
+ u3 = _j + _i;
+ bvirt = u3 - _j;
+ u[2] = _j - (u3 - bvirt) + (_i - bvirt);
+ u[3] = u3;
+ const Dlen = sum(C2len, C2, 4, u, D);
+
+ return D[Dlen - 1];
+}
+
+function orient2d(ax, ay, bx, by, cx, cy) {
+ const detleft = (ay - cy) * (bx - cx);
+ const detright = (ax - cx) * (by - cy);
+ const det = detleft - detright;
+
+ if (detleft === 0 || detright === 0 || (detleft > 0) !== (detright > 0)) return det;
+
+ const detsum = Math.abs(detleft + detright);
+ if (Math.abs(det) >= ccwerrboundA * detsum) return det;
+
+ return -orient2dadapt(ax, ay, bx, by, cx, cy, detsum);
+}
+
+const EPSILON = Math.pow(2, -52);
+const EDGE_STACK = new Uint32Array(512);
+
+class Delaunator {
+
+ static from(points, getX = defaultGetX, getY = defaultGetY) {
+ const n = points.length;
+ const coords = new Float64Array(n * 2);
+
+ for (let i = 0; i < n; i++) {
+ const p = points[i];
+ coords[2 * i] = getX(p);
+ coords[2 * i + 1] = getY(p);
+ }
+
+ return new Delaunator(coords);
+ }
+
+ constructor(coords) {
+ const n = coords.length >> 1;
+ if (n > 0 && typeof coords[0] !== 'number') throw new Error('Expected coords to contain numbers.');
+
+ this.coords = coords;
+
+ // arrays that will store the triangulation graph
+ const maxTriangles = Math.max(2 * n - 5, 0);
+ this._triangles = new Uint32Array(maxTriangles * 3);
+ this._halfedges = new Int32Array(maxTriangles * 3);
+
+ // temporary arrays for tracking the edges of the advancing convex hull
+ this._hashSize = Math.ceil(Math.sqrt(n));
+ this._hullPrev = new Uint32Array(n); // edge to prev edge
+ this._hullNext = new Uint32Array(n); // edge to next edge
+ this._hullTri = new Uint32Array(n); // edge to adjacent triangle
+ this._hullHash = new Int32Array(this._hashSize).fill(-1); // angular edge hash
+
+ // temporary arrays for sorting points
+ this._ids = new Uint32Array(n);
+ this._dists = new Float64Array(n);
+
+ this.update();
+ }
+
+ update() {
+ const {coords, _hullPrev: hullPrev, _hullNext: hullNext, _hullTri: hullTri, _hullHash: hullHash} = this;
+ const n = coords.length >> 1;
+
+ // populate an array of point indices; calculate input data bbox
+ let minX = Infinity;
+ let minY = Infinity;
+ let maxX = -Infinity;
+ let maxY = -Infinity;
+
+ for (let i = 0; i < n; i++) {
+ const x = coords[2 * i];
+ const y = coords[2 * i + 1];
+ if (x < minX) minX = x;
+ if (y < minY) minY = y;
+ if (x > maxX) maxX = x;
+ if (y > maxY) maxY = y;
+ this._ids[i] = i;
+ }
+ const cx = (minX + maxX) / 2;
+ const cy = (minY + maxY) / 2;
+
+ let minDist = Infinity;
+ let i0, i1, i2;
+
+ // pick a seed point close to the center
+ for (let i = 0; i < n; i++) {
+ const d = dist(cx, cy, coords[2 * i], coords[2 * i + 1]);
+ if (d < minDist) {
+ i0 = i;
+ minDist = d;
+ }
+ }
+ const i0x = coords[2 * i0];
+ const i0y = coords[2 * i0 + 1];
+
+ minDist = Infinity;
+
+ // find the point closest to the seed
+ for (let i = 0; i < n; i++) {
+ if (i === i0) continue;
+ const d = dist(i0x, i0y, coords[2 * i], coords[2 * i + 1]);
+ if (d < minDist && d > 0) {
+ i1 = i;
+ minDist = d;
+ }
+ }
+ let i1x = coords[2 * i1];
+ let i1y = coords[2 * i1 + 1];
+
+ let minRadius = Infinity;
+
+ // find the third point which forms the smallest circumcircle with the first two
+ for (let i = 0; i < n; i++) {
+ if (i === i0 || i === i1) continue;
+ const r = circumradius(i0x, i0y, i1x, i1y, coords[2 * i], coords[2 * i + 1]);
+ if (r < minRadius) {
+ i2 = i;
+ minRadius = r;
+ }
+ }
+ let i2x = coords[2 * i2];
+ let i2y = coords[2 * i2 + 1];
+
+ if (minRadius === Infinity) {
+ // order collinear points by dx (or dy if all x are identical)
+ // and return the list as a hull
+ for (let i = 0; i < n; i++) {
+ this._dists[i] = (coords[2 * i] - coords[0]) || (coords[2 * i + 1] - coords[1]);
+ }
+ quicksort(this._ids, this._dists, 0, n - 1);
+ const hull = new Uint32Array(n);
+ let j = 0;
+ for (let i = 0, d0 = -Infinity; i < n; i++) {
+ const id = this._ids[i];
+ if (this._dists[id] > d0) {
+ hull[j++] = id;
+ d0 = this._dists[id];
+ }
+ }
+ this.hull = hull.subarray(0, j);
+ this.triangles = new Uint32Array(0);
+ this.halfedges = new Uint32Array(0);
+ return;
+ }
+
+ // swap the order of the seed points for counter-clockwise orientation
+ if (orient2d(i0x, i0y, i1x, i1y, i2x, i2y) < 0) {
+ const i = i1;
+ const x = i1x;
+ const y = i1y;
+ i1 = i2;
+ i1x = i2x;
+ i1y = i2y;
+ i2 = i;
+ i2x = x;
+ i2y = y;
+ }
+
+ const center = circumcenter(i0x, i0y, i1x, i1y, i2x, i2y);
+ this._cx = center.x;
+ this._cy = center.y;
+
+ for (let i = 0; i < n; i++) {
+ this._dists[i] = dist(coords[2 * i], coords[2 * i + 1], center.x, center.y);
+ }
+
+ // sort the points by distance from the seed triangle circumcenter
+ quicksort(this._ids, this._dists, 0, n - 1);
+
+ // set up the seed triangle as the starting hull
+ this._hullStart = i0;
+ let hullSize = 3;
+
+ hullNext[i0] = hullPrev[i2] = i1;
+ hullNext[i1] = hullPrev[i0] = i2;
+ hullNext[i2] = hullPrev[i1] = i0;
+
+ hullTri[i0] = 0;
+ hullTri[i1] = 1;
+ hullTri[i2] = 2;
+
+ hullHash.fill(-1);
+ hullHash[this._hashKey(i0x, i0y)] = i0;
+ hullHash[this._hashKey(i1x, i1y)] = i1;
+ hullHash[this._hashKey(i2x, i2y)] = i2;
+
+ this.trianglesLen = 0;
+ this._addTriangle(i0, i1, i2, -1, -1, -1);
+
+ for (let k = 0, xp, yp; k < this._ids.length; k++) {
+ const i = this._ids[k];
+ const x = coords[2 * i];
+ const y = coords[2 * i + 1];
+
+ // skip near-duplicate points
+ if (k > 0 && Math.abs(x - xp) <= EPSILON && Math.abs(y - yp) <= EPSILON) continue;
+ xp = x;
+ yp = y;
+
+ // skip seed triangle points
+ if (i === i0 || i === i1 || i === i2) continue;
+
+ // find a visible edge on the convex hull using edge hash
+ let start = 0;
+ for (let j = 0, key = this._hashKey(x, y); j < this._hashSize; j++) {
+ start = hullHash[(key + j) % this._hashSize];
+ if (start !== -1 && start !== hullNext[start]) break;
+ }
+
+ start = hullPrev[start];
+ let e = start, q;
+ while (q = hullNext[e], orient2d(x, y, coords[2 * e], coords[2 * e + 1], coords[2 * q], coords[2 * q + 1]) >= 0) {
+ e = q;
+ if (e === start) {
+ e = -1;
+ break;
+ }
+ }
+ if (e === -1) continue; // likely a near-duplicate point; skip it
+
+ // add the first triangle from the point
+ let t = this._addTriangle(e, i, hullNext[e], -1, -1, hullTri[e]);
+
+ // recursively flip triangles from the point until they satisfy the Delaunay condition
+ hullTri[i] = this._legalize(t + 2);
+ hullTri[e] = t; // keep track of boundary triangles on the hull
+ hullSize++;
+
+ // walk forward through the hull, adding more triangles and flipping recursively
+ let n = hullNext[e];
+ while (q = hullNext[n], orient2d(x, y, coords[2 * n], coords[2 * n + 1], coords[2 * q], coords[2 * q + 1]) < 0) {
+ t = this._addTriangle(n, i, q, hullTri[i], -1, hullTri[n]);
+ hullTri[i] = this._legalize(t + 2);
+ hullNext[n] = n; // mark as removed
+ hullSize--;
+ n = q;
+ }
+
+ // walk backward from the other side, adding more triangles and flipping
+ if (e === start) {
+ while (q = hullPrev[e], orient2d(x, y, coords[2 * q], coords[2 * q + 1], coords[2 * e], coords[2 * e + 1]) < 0) {
+ t = this._addTriangle(q, i, e, -1, hullTri[e], hullTri[q]);
+ this._legalize(t + 2);
+ hullTri[q] = t;
+ hullNext[e] = e; // mark as removed
+ hullSize--;
+ e = q;
+ }
+ }
+
+ // update the hull indices
+ this._hullStart = hullPrev[i] = e;
+ hullNext[e] = hullPrev[n] = i;
+ hullNext[i] = n;
+
+ // save the two new edges in the hash table
+ hullHash[this._hashKey(x, y)] = i;
+ hullHash[this._hashKey(coords[2 * e], coords[2 * e + 1])] = e;
+ }
+
+ this.hull = new Uint32Array(hullSize);
+ for (let i = 0, e = this._hullStart; i < hullSize; i++) {
+ this.hull[i] = e;
+ e = hullNext[e];
+ }
+
+ // trim typed triangle mesh arrays
+ this.triangles = this._triangles.subarray(0, this.trianglesLen);
+ this.halfedges = this._halfedges.subarray(0, this.trianglesLen);
+ }
+
+ _hashKey(x, y) {
+ return Math.floor(pseudoAngle(x - this._cx, y - this._cy) * this._hashSize) % this._hashSize;
+ }
+
+ _legalize(a) {
+ const {_triangles: triangles, _halfedges: halfedges, coords} = this;
+
+ let i = 0;
+ let ar = 0;
+
+ // recursion eliminated with a fixed-size stack
+ while (true) {
+ const b = halfedges[a];
+
+ /* if the pair of triangles doesn't satisfy the Delaunay condition
+ * (p1 is inside the circumcircle of [p0, pl, pr]), flip them,
+ * then do the same check/flip recursively for the new pair of triangles
+ *
+ * pl pl
+ * /||\ / \
+ * al/ || \bl al/ \a
+ * / || \ / \
+ * / a||b \ flip /___ar___\
+ * p0\ || /p1 => p0\---bl---/p1
+ * \ || / \ /
+ * ar\ || /br b\ /br
+ * \||/ \ /
+ * pr pr
+ */
+ const a0 = a - a % 3;
+ ar = a0 + (a + 2) % 3;
+
+ if (b === -1) { // convex hull edge
+ if (i === 0) break;
+ a = EDGE_STACK[--i];
+ continue;
+ }
+
+ const b0 = b - b % 3;
+ const al = a0 + (a + 1) % 3;
+ const bl = b0 + (b + 2) % 3;
+
+ const p0 = triangles[ar];
+ const pr = triangles[a];
+ const pl = triangles[al];
+ const p1 = triangles[bl];
+
+ const illegal = inCircle(
+ coords[2 * p0], coords[2 * p0 + 1],
+ coords[2 * pr], coords[2 * pr + 1],
+ coords[2 * pl], coords[2 * pl + 1],
+ coords[2 * p1], coords[2 * p1 + 1]);
+
+ if (illegal) {
+ triangles[a] = p1;
+ triangles[b] = p0;
+
+ const hbl = halfedges[bl];
+
+ // edge swapped on the other side of the hull (rare); fix the halfedge reference
+ if (hbl === -1) {
+ let e = this._hullStart;
+ do {
+ if (this._hullTri[e] === bl) {
+ this._hullTri[e] = a;
+ break;
+ }
+ e = this._hullPrev[e];
+ } while (e !== this._hullStart);
+ }
+ this._link(a, hbl);
+ this._link(b, halfedges[ar]);
+ this._link(ar, bl);
+
+ const br = b0 + (b + 1) % 3;
+
+ // don't worry about hitting the cap: it can only happen on extremely degenerate input
+ if (i < EDGE_STACK.length) {
+ EDGE_STACK[i++] = br;
+ }
+ } else {
+ if (i === 0) break;
+ a = EDGE_STACK[--i];
+ }
+ }
+
+ return ar;
+ }
+
+ _link(a, b) {
+ this._halfedges[a] = b;
+ if (b !== -1) this._halfedges[b] = a;
+ }
+
+ // add a new triangle given vertex indices and adjacent half-edge ids
+ _addTriangle(i0, i1, i2, a, b, c) {
+ const t = this.trianglesLen;
+
+ this._triangles[t] = i0;
+ this._triangles[t + 1] = i1;
+ this._triangles[t + 2] = i2;
+
+ this._link(t, a);
+ this._link(t + 1, b);
+ this._link(t + 2, c);
+
+ this.trianglesLen += 3;
+
+ return t;
+ }
+}
+
+// monotonically increases with real angle, but doesn't need expensive trigonometry
+function pseudoAngle(dx, dy) {
+ const p = dx / (Math.abs(dx) + Math.abs(dy));
+ return (dy > 0 ? 3 - p : 1 + p) / 4; // [0..1]
+}
+
+function dist(ax, ay, bx, by) {
+ const dx = ax - bx;
+ const dy = ay - by;
+ return dx * dx + dy * dy;
+}
+
+function inCircle(ax, ay, bx, by, cx, cy, px, py) {
+ const dx = ax - px;
+ const dy = ay - py;
+ const ex = bx - px;
+ const ey = by - py;
+ const fx = cx - px;
+ const fy = cy - py;
+
+ const ap = dx * dx + dy * dy;
+ const bp = ex * ex + ey * ey;
+ const cp = fx * fx + fy * fy;
+
+ return dx * (ey * cp - bp * fy) -
+ dy * (ex * cp - bp * fx) +
+ ap * (ex * fy - ey * fx) < 0;
+}
+
+function circumradius(ax, ay, bx, by, cx, cy) {
+ const dx = bx - ax;
+ const dy = by - ay;
+ const ex = cx - ax;
+ const ey = cy - ay;
+
+ const bl = dx * dx + dy * dy;
+ const cl = ex * ex + ey * ey;
+ const d = 0.5 / (dx * ey - dy * ex);
+
+ const x = (ey * bl - dy * cl) * d;
+ const y = (dx * cl - ex * bl) * d;
+
+ return x * x + y * y;
+}
+
+function circumcenter(ax, ay, bx, by, cx, cy) {
+ const dx = bx - ax;
+ const dy = by - ay;
+ const ex = cx - ax;
+ const ey = cy - ay;
+
+ const bl = dx * dx + dy * dy;
+ const cl = ex * ex + ey * ey;
+ const d = 0.5 / (dx * ey - dy * ex);
+
+ const x = ax + (ey * bl - dy * cl) * d;
+ const y = ay + (dx * cl - ex * bl) * d;
+
+ return {x, y};
+}
+
+function quicksort(ids, dists, left, right) {
+ if (right - left <= 20) {
+ for (let i = left + 1; i <= right; i++) {
+ const temp = ids[i];
+ const tempDist = dists[temp];
+ let j = i - 1;
+ while (j >= left && dists[ids[j]] > tempDist) ids[j + 1] = ids[j--];
+ ids[j + 1] = temp;
+ }
+ } else {
+ const median = (left + right) >> 1;
+ let i = left + 1;
+ let j = right;
+ swap(ids, median, i);
+ if (dists[ids[left]] > dists[ids[right]]) swap(ids, left, right);
+ if (dists[ids[i]] > dists[ids[right]]) swap(ids, i, right);
+ if (dists[ids[left]] > dists[ids[i]]) swap(ids, left, i);
+
+ const temp = ids[i];
+ const tempDist = dists[temp];
+ while (true) {
+ do i++; while (dists[ids[i]] < tempDist);
+ do j--; while (dists[ids[j]] > tempDist);
+ if (j < i) break;
+ swap(ids, i, j);
+ }
+ ids[left + 1] = ids[j];
+ ids[j] = temp;
+
+ if (right - i + 1 >= j - left) {
+ quicksort(ids, dists, i, right);
+ quicksort(ids, dists, left, j - 1);
+ } else {
+ quicksort(ids, dists, left, j - 1);
+ quicksort(ids, dists, i, right);
+ }
+ }
+}
+
+function swap(arr, i, j) {
+ const tmp = arr[i];
+ arr[i] = arr[j];
+ arr[j] = tmp;
+}
+
+function defaultGetX(p) {
+ return p[0];
+}
+function defaultGetY(p) {
+ return p[1];
+}
+
+const epsilon = 1e-6;
+
+class Path {
+ constructor() {
+ this._x0 = this._y0 = // start of current subpath
+ this._x1 = this._y1 = null; // end of current subpath
+ this._ = "";
+ }
+ moveTo(x, y) {
+ this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}`;
+ }
+ closePath() {
+ if (this._x1 !== null) {
+ this._x1 = this._x0, this._y1 = this._y0;
+ this._ += "Z";
+ }
+ }
+ lineTo(x, y) {
+ this._ += `L${this._x1 = +x},${this._y1 = +y}`;
+ }
+ arc(x, y, r) {
+ x = +x, y = +y, r = +r;
+ const x0 = x + r;
+ const y0 = y;
+ if (r < 0) throw new Error("negative radius");
+ if (this._x1 === null) this._ += `M${x0},${y0}`;
+ else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) this._ += "L" + x0 + "," + y0;
+ if (!r) return;
+ this._ += `A${r},${r},0,1,1,${x - r},${y}A${r},${r},0,1,1,${this._x1 = x0},${this._y1 = y0}`;
+ }
+ rect(x, y, w, h) {
+ this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}h${+w}v${+h}h${-w}Z`;
+ }
+ value() {
+ return this._ || null;
+ }
+}
+
+class Polygon {
+ constructor() {
+ this._ = [];
+ }
+ moveTo(x, y) {
+ this._.push([x, y]);
+ }
+ closePath() {
+ this._.push(this._[0].slice());
+ }
+ lineTo(x, y) {
+ this._.push([x, y]);
+ }
+ value() {
+ return this._.length ? this._ : null;
+ }
+}
+
+class Voronoi {
+ constructor(delaunay, [xmin, ymin, xmax, ymax] = [0, 0, 960, 500]) {
+ if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds");
+ this.delaunay = delaunay;
+ this._circumcenters = new Float64Array(delaunay.points.length * 2);
+ this.vectors = new Float64Array(delaunay.points.length * 2);
+ this.xmax = xmax, this.xmin = xmin;
+ this.ymax = ymax, this.ymin = ymin;
+ this._init();
+ }
+ update() {
+ this.delaunay.update();
+ this._init();
+ return this;
+ }
+ _init() {
+ const {delaunay: {points, hull, triangles}, vectors} = this;
+
+ // Compute circumcenters.
+ const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2);
+ for (let i = 0, j = 0, n = triangles.length, x, y; i < n; i += 3, j += 2) {
+ const t1 = triangles[i] * 2;
+ const t2 = triangles[i + 1] * 2;
+ const t3 = triangles[i + 2] * 2;
+ const x1 = points[t1];
+ const y1 = points[t1 + 1];
+ const x2 = points[t2];
+ const y2 = points[t2 + 1];
+ const x3 = points[t3];
+ const y3 = points[t3 + 1];
+
+ const dx = x2 - x1;
+ const dy = y2 - y1;
+ const ex = x3 - x1;
+ const ey = y3 - y1;
+ const ab = (dx * ey - dy * ex) * 2;
+
+ if (Math.abs(ab) < 1e-9) {
+ // degenerate case (collinear diagram)
+ // almost equal points (degenerate triangle)
+ // the circumcenter is at the infinity, in a
+ // direction that is:
+ // 1. orthogonal to the halfedge.
+ let a = 1e9;
+ // 2. points away from the center; since the list of triangles starts
+ // in the center, the first point of the first triangle
+ // will be our reference
+ const r = triangles[0] * 2;
+ a *= Math.sign((points[r] - x1) * ey - (points[r + 1] - y1) * ex);
+ x = (x1 + x3) / 2 - a * ey;
+ y = (y1 + y3) / 2 + a * ex;
+ } else {
+ const d = 1 / ab;
+ const bl = dx * dx + dy * dy;
+ const cl = ex * ex + ey * ey;
+ x = x1 + (ey * bl - dy * cl) * d;
+ y = y1 + (dx * cl - ex * bl) * d;
+ }
+ circumcenters[j] = x;
+ circumcenters[j + 1] = y;
+ }
+
+ // Compute exterior cell rays.
+ let h = hull[hull.length - 1];
+ let p0, p1 = h * 4;
+ let x0, x1 = points[2 * h];
+ let y0, y1 = points[2 * h + 1];
+ vectors.fill(0);
+ for (let i = 0; i < hull.length; ++i) {
+ h = hull[i];
+ p0 = p1, x0 = x1, y0 = y1;
+ p1 = h * 4, x1 = points[2 * h], y1 = points[2 * h + 1];
+ vectors[p0 + 2] = vectors[p1] = y0 - y1;
+ vectors[p0 + 3] = vectors[p1 + 1] = x1 - x0;
+ }
+ }
+ render(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {delaunay: {halfedges, inedges, hull}, circumcenters, vectors} = this;
+ if (hull.length <= 1) return null;
+ for (let i = 0, n = halfedges.length; i < n; ++i) {
+ const j = halfedges[i];
+ if (j < i) continue;
+ const ti = Math.floor(i / 3) * 2;
+ const tj = Math.floor(j / 3) * 2;
+ const xi = circumcenters[ti];
+ const yi = circumcenters[ti + 1];
+ const xj = circumcenters[tj];
+ const yj = circumcenters[tj + 1];
+ this._renderSegment(xi, yi, xj, yj, context);
+ }
+ let h0, h1 = hull[hull.length - 1];
+ for (let i = 0; i < hull.length; ++i) {
+ h0 = h1, h1 = hull[i];
+ const t = Math.floor(inedges[h1] / 3) * 2;
+ const x = circumcenters[t];
+ const y = circumcenters[t + 1];
+ const v = h0 * 4;
+ const p = this._project(x, y, vectors[v + 2], vectors[v + 3]);
+ if (p) this._renderSegment(x, y, p[0], p[1], context);
+ }
+ return buffer && buffer.value();
+ }
+ renderBounds(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ context.rect(this.xmin, this.ymin, this.xmax - this.xmin, this.ymax - this.ymin);
+ return buffer && buffer.value();
+ }
+ renderCell(i, context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const points = this._clip(i);
+ if (points === null || !points.length) return;
+ context.moveTo(points[0], points[1]);
+ let n = points.length;
+ while (points[0] === points[n-2] && points[1] === points[n-1] && n > 1) n -= 2;
+ for (let i = 2; i < n; i += 2) {
+ if (points[i] !== points[i-2] || points[i+1] !== points[i-1])
+ context.lineTo(points[i], points[i + 1]);
+ }
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ *cellPolygons() {
+ const {delaunay: {points}} = this;
+ for (let i = 0, n = points.length / 2; i < n; ++i) {
+ const cell = this.cellPolygon(i);
+ if (cell) cell.index = i, yield cell;
+ }
+ }
+ cellPolygon(i) {
+ const polygon = new Polygon;
+ this.renderCell(i, polygon);
+ return polygon.value();
+ }
+ _renderSegment(x0, y0, x1, y1, context) {
+ let S;
+ const c0 = this._regioncode(x0, y0);
+ const c1 = this._regioncode(x1, y1);
+ if (c0 === 0 && c1 === 0) {
+ context.moveTo(x0, y0);
+ context.lineTo(x1, y1);
+ } else if (S = this._clipSegment(x0, y0, x1, y1, c0, c1)) {
+ context.moveTo(S[0], S[1]);
+ context.lineTo(S[2], S[3]);
+ }
+ }
+ contains(i, x, y) {
+ if ((x = +x, x !== x) || (y = +y, y !== y)) return false;
+ return this.delaunay._step(i, x, y) === i;
+ }
+ *neighbors(i) {
+ const ci = this._clip(i);
+ if (ci) for (const j of this.delaunay.neighbors(i)) {
+ const cj = this._clip(j);
+ // find the common edge
+ if (cj) loop: for (let ai = 0, li = ci.length; ai < li; ai += 2) {
+ for (let aj = 0, lj = cj.length; aj < lj; aj += 2) {
+ if (ci[ai] == cj[aj]
+ && ci[ai + 1] == cj[aj + 1]
+ && ci[(ai + 2) % li] == cj[(aj + lj - 2) % lj]
+ && ci[(ai + 3) % li] == cj[(aj + lj - 1) % lj]
+ ) {
+ yield j;
+ break loop;
+ }
+ }
+ }
+ }
+ }
+ _cell(i) {
+ const {circumcenters, delaunay: {inedges, halfedges, triangles}} = this;
+ const e0 = inedges[i];
+ if (e0 === -1) return null; // coincident point
+ const points = [];
+ let e = e0;
+ do {
+ const t = Math.floor(e / 3);
+ points.push(circumcenters[t * 2], circumcenters[t * 2 + 1]);
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) break; // bad triangulation
+ e = halfedges[e];
+ } while (e !== e0 && e !== -1);
+ return points;
+ }
+ _clip(i) {
+ // degenerate case (1 valid point: return the box)
+ if (i === 0 && this.delaunay.hull.length === 1) {
+ return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin];
+ }
+ const points = this._cell(i);
+ if (points === null) return null;
+ const {vectors: V} = this;
+ const v = i * 4;
+ return V[v] || V[v + 1]
+ ? this._clipInfinite(i, points, V[v], V[v + 1], V[v + 2], V[v + 3])
+ : this._clipFinite(i, points);
+ }
+ _clipFinite(i, points) {
+ const n = points.length;
+ let P = null;
+ let x0, y0, x1 = points[n - 2], y1 = points[n - 1];
+ let c0, c1 = this._regioncode(x1, y1);
+ let e0, e1 = 0;
+ for (let j = 0; j < n; j += 2) {
+ x0 = x1, y0 = y1, x1 = points[j], y1 = points[j + 1];
+ c0 = c1, c1 = this._regioncode(x1, y1);
+ if (c0 === 0 && c1 === 0) {
+ e0 = e1, e1 = 0;
+ if (P) P.push(x1, y1);
+ else P = [x1, y1];
+ } else {
+ let S, sx0, sy0, sx1, sy1;
+ if (c0 === 0) {
+ if ((S = this._clipSegment(x0, y0, x1, y1, c0, c1)) === null) continue;
+ [sx0, sy0, sx1, sy1] = S;
+ } else {
+ if ((S = this._clipSegment(x1, y1, x0, y0, c1, c0)) === null) continue;
+ [sx1, sy1, sx0, sy0] = S;
+ e0 = e1, e1 = this._edgecode(sx0, sy0);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ if (P) P.push(sx0, sy0);
+ else P = [sx0, sy0];
+ }
+ e0 = e1, e1 = this._edgecode(sx1, sy1);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ if (P) P.push(sx1, sy1);
+ else P = [sx1, sy1];
+ }
+ }
+ if (P) {
+ e0 = e1, e1 = this._edgecode(P[0], P[1]);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) {
+ return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin];
+ }
+ return P;
+ }
+ _clipSegment(x0, y0, x1, y1, c0, c1) {
+ while (true) {
+ if (c0 === 0 && c1 === 0) return [x0, y0, x1, y1];
+ if (c0 & c1) return null;
+ let x, y, c = c0 || c1;
+ if (c & 0b1000) x = x0 + (x1 - x0) * (this.ymax - y0) / (y1 - y0), y = this.ymax;
+ else if (c & 0b0100) x = x0 + (x1 - x0) * (this.ymin - y0) / (y1 - y0), y = this.ymin;
+ else if (c & 0b0010) y = y0 + (y1 - y0) * (this.xmax - x0) / (x1 - x0), x = this.xmax;
+ else y = y0 + (y1 - y0) * (this.xmin - x0) / (x1 - x0), x = this.xmin;
+ if (c0) x0 = x, y0 = y, c0 = this._regioncode(x0, y0);
+ else x1 = x, y1 = y, c1 = this._regioncode(x1, y1);
+ }
+ }
+ _clipInfinite(i, points, vx0, vy0, vxn, vyn) {
+ let P = Array.from(points), p;
+ if (p = this._project(P[0], P[1], vx0, vy0)) P.unshift(p[0], p[1]);
+ if (p = this._project(P[P.length - 2], P[P.length - 1], vxn, vyn)) P.push(p[0], p[1]);
+ if (P = this._clipFinite(i, P)) {
+ for (let j = 0, n = P.length, c0, c1 = this._edgecode(P[n - 2], P[n - 1]); j < n; j += 2) {
+ c0 = c1, c1 = this._edgecode(P[j], P[j + 1]);
+ if (c0 && c1) j = this._edge(i, c0, c1, P, j), n = P.length;
+ }
+ } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) {
+ P = [this.xmin, this.ymin, this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax];
+ }
+ return P;
+ }
+ _edge(i, e0, e1, P, j) {
+ while (e0 !== e1) {
+ let x, y;
+ switch (e0) {
+ case 0b0101: e0 = 0b0100; continue; // top-left
+ case 0b0100: e0 = 0b0110, x = this.xmax, y = this.ymin; break; // top
+ case 0b0110: e0 = 0b0010; continue; // top-right
+ case 0b0010: e0 = 0b1010, x = this.xmax, y = this.ymax; break; // right
+ case 0b1010: e0 = 0b1000; continue; // bottom-right
+ case 0b1000: e0 = 0b1001, x = this.xmin, y = this.ymax; break; // bottom
+ case 0b1001: e0 = 0b0001; continue; // bottom-left
+ case 0b0001: e0 = 0b0101, x = this.xmin, y = this.ymin; break; // left
+ }
+ // Note: this implicitly checks for out of bounds: if P[j] or P[j+1] are
+ // undefined, the conditional statement will be executed.
+ if ((P[j] !== x || P[j + 1] !== y) && this.contains(i, x, y)) {
+ P.splice(j, 0, x, y), j += 2;
+ }
+ }
+ if (P.length > 4) {
+ for (let i = 0; i < P.length; i+= 2) {
+ const j = (i + 2) % P.length, k = (i + 4) % P.length;
+ if (P[i] === P[j] && P[j] === P[k]
+ || P[i + 1] === P[j + 1] && P[j + 1] === P[k + 1])
+ P.splice(j, 2), i -= 2;
+ }
+ }
+ return j;
+ }
+ _project(x0, y0, vx, vy) {
+ let t = Infinity, c, x, y;
+ if (vy < 0) { // top
+ if (y0 <= this.ymin) return null;
+ if ((c = (this.ymin - y0) / vy) < t) y = this.ymin, x = x0 + (t = c) * vx;
+ } else if (vy > 0) { // bottom
+ if (y0 >= this.ymax) return null;
+ if ((c = (this.ymax - y0) / vy) < t) y = this.ymax, x = x0 + (t = c) * vx;
+ }
+ if (vx > 0) { // right
+ if (x0 >= this.xmax) return null;
+ if ((c = (this.xmax - x0) / vx) < t) x = this.xmax, y = y0 + (t = c) * vy;
+ } else if (vx < 0) { // left
+ if (x0 <= this.xmin) return null;
+ if ((c = (this.xmin - x0) / vx) < t) x = this.xmin, y = y0 + (t = c) * vy;
+ }
+ return [x, y];
+ }
+ _edgecode(x, y) {
+ return (x === this.xmin ? 0b0001
+ : x === this.xmax ? 0b0010 : 0b0000)
+ | (y === this.ymin ? 0b0100
+ : y === this.ymax ? 0b1000 : 0b0000);
+ }
+ _regioncode(x, y) {
+ return (x < this.xmin ? 0b0001
+ : x > this.xmax ? 0b0010 : 0b0000)
+ | (y < this.ymin ? 0b0100
+ : y > this.ymax ? 0b1000 : 0b0000);
+ }
+}
+
+const tau = 2 * Math.PI, pow = Math.pow;
+
+function pointX(p) {
+ return p[0];
+}
+
+function pointY(p) {
+ return p[1];
+}
+
+// A triangulation is collinear if all its triangles have a non-null area
+function collinear(d) {
+ const {triangles, coords} = d;
+ for (let i = 0; i < triangles.length; i += 3) {
+ const a = 2 * triangles[i],
+ b = 2 * triangles[i + 1],
+ c = 2 * triangles[i + 2],
+ cross = (coords[c] - coords[a]) * (coords[b + 1] - coords[a + 1])
+ - (coords[b] - coords[a]) * (coords[c + 1] - coords[a + 1]);
+ if (cross > 1e-10) return false;
+ }
+ return true;
+}
+
+function jitter(x, y, r) {
+ return [x + Math.sin(x + y) * r, y + Math.cos(x - y) * r];
+}
+
+class Delaunay {
+ static from(points, fx = pointX, fy = pointY, that) {
+ return new Delaunay("length" in points
+ ? flatArray(points, fx, fy, that)
+ : Float64Array.from(flatIterable(points, fx, fy, that)));
+ }
+ constructor(points) {
+ this._delaunator = new Delaunator(points);
+ this.inedges = new Int32Array(points.length / 2);
+ this._hullIndex = new Int32Array(points.length / 2);
+ this.points = this._delaunator.coords;
+ this._init();
+ }
+ update() {
+ this._delaunator.update();
+ this._init();
+ return this;
+ }
+ _init() {
+ const d = this._delaunator, points = this.points;
+
+ // check for collinear
+ if (d.hull && d.hull.length > 2 && collinear(d)) {
+ this.collinear = Int32Array.from({length: points.length/2}, (_,i) => i)
+ .sort((i, j) => points[2 * i] - points[2 * j] || points[2 * i + 1] - points[2 * j + 1]); // for exact neighbors
+ const e = this.collinear[0], f = this.collinear[this.collinear.length - 1],
+ bounds = [ points[2 * e], points[2 * e + 1], points[2 * f], points[2 * f + 1] ],
+ r = 1e-8 * Math.hypot(bounds[3] - bounds[1], bounds[2] - bounds[0]);
+ for (let i = 0, n = points.length / 2; i < n; ++i) {
+ const p = jitter(points[2 * i], points[2 * i + 1], r);
+ points[2 * i] = p[0];
+ points[2 * i + 1] = p[1];
+ }
+ this._delaunator = new Delaunator(points);
+ } else {
+ delete this.collinear;
+ }
+
+ const halfedges = this.halfedges = this._delaunator.halfedges;
+ const hull = this.hull = this._delaunator.hull;
+ const triangles = this.triangles = this._delaunator.triangles;
+ const inedges = this.inedges.fill(-1);
+ const hullIndex = this._hullIndex.fill(-1);
+
+ // Compute an index from each point to an (arbitrary) incoming halfedge
+ // Used to give the first neighbor of each point; for this reason,
+ // on the hull we give priority to exterior halfedges
+ for (let e = 0, n = halfedges.length; e < n; ++e) {
+ const p = triangles[e % 3 === 2 ? e - 2 : e + 1];
+ if (halfedges[e] === -1 || inedges[p] === -1) inedges[p] = e;
+ }
+ for (let i = 0, n = hull.length; i < n; ++i) {
+ hullIndex[hull[i]] = i;
+ }
+
+ // degenerate case: 1 or 2 (distinct) points
+ if (hull.length <= 2 && hull.length > 0) {
+ this.triangles = new Int32Array(3).fill(-1);
+ this.halfedges = new Int32Array(3).fill(-1);
+ this.triangles[0] = hull[0];
+ inedges[hull[0]] = 1;
+ if (hull.length === 2) {
+ inedges[hull[1]] = 0;
+ this.triangles[1] = hull[1];
+ this.triangles[2] = hull[1];
+ }
+ }
+ }
+ voronoi(bounds) {
+ return new Voronoi(this, bounds);
+ }
+ *neighbors(i) {
+ const {inedges, hull, _hullIndex, halfedges, triangles, collinear} = this;
+
+ // degenerate case with several collinear points
+ if (collinear) {
+ const l = collinear.indexOf(i);
+ if (l > 0) yield collinear[l - 1];
+ if (l < collinear.length - 1) yield collinear[l + 1];
+ return;
+ }
+
+ const e0 = inedges[i];
+ if (e0 === -1) return; // coincident point
+ let e = e0, p0 = -1;
+ do {
+ yield p0 = triangles[e];
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) return; // bad triangulation
+ e = halfedges[e];
+ if (e === -1) {
+ const p = hull[(_hullIndex[i] + 1) % hull.length];
+ if (p !== p0) yield p;
+ return;
+ }
+ } while (e !== e0);
+ }
+ find(x, y, i = 0) {
+ if ((x = +x, x !== x) || (y = +y, y !== y)) return -1;
+ const i0 = i;
+ let c;
+ while ((c = this._step(i, x, y)) >= 0 && c !== i && c !== i0) i = c;
+ return c;
+ }
+ _step(i, x, y) {
+ const {inedges, hull, _hullIndex, halfedges, triangles, points} = this;
+ if (inedges[i] === -1 || !points.length) return (i + 1) % (points.length >> 1);
+ let c = i;
+ let dc = pow(x - points[i * 2], 2) + pow(y - points[i * 2 + 1], 2);
+ const e0 = inedges[i];
+ let e = e0;
+ do {
+ let t = triangles[e];
+ const dt = pow(x - points[t * 2], 2) + pow(y - points[t * 2 + 1], 2);
+ if (dt < dc) dc = dt, c = t;
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) break; // bad triangulation
+ e = halfedges[e];
+ if (e === -1) {
+ e = hull[(_hullIndex[i] + 1) % hull.length];
+ if (e !== t) {
+ if (pow(x - points[e * 2], 2) + pow(y - points[e * 2 + 1], 2) < dc) return e;
+ }
+ break;
+ }
+ } while (e !== e0);
+ return c;
+ }
+ render(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {points, halfedges, triangles} = this;
+ for (let i = 0, n = halfedges.length; i < n; ++i) {
+ const j = halfedges[i];
+ if (j < i) continue;
+ const ti = triangles[i] * 2;
+ const tj = triangles[j] * 2;
+ context.moveTo(points[ti], points[ti + 1]);
+ context.lineTo(points[tj], points[tj + 1]);
+ }
+ this.renderHull(context);
+ return buffer && buffer.value();
+ }
+ renderPoints(context, r) {
+ if (r === undefined && (!context || typeof context.moveTo !== "function")) r = context, context = null;
+ r = r == undefined ? 2 : +r;
+ const buffer = context == null ? context = new Path : undefined;
+ const {points} = this;
+ for (let i = 0, n = points.length; i < n; i += 2) {
+ const x = points[i], y = points[i + 1];
+ context.moveTo(x + r, y);
+ context.arc(x, y, r, 0, tau);
+ }
+ return buffer && buffer.value();
+ }
+ renderHull(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {hull, points} = this;
+ const h = hull[0] * 2, n = hull.length;
+ context.moveTo(points[h], points[h + 1]);
+ for (let i = 1; i < n; ++i) {
+ const h = 2 * hull[i];
+ context.lineTo(points[h], points[h + 1]);
+ }
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ hullPolygon() {
+ const polygon = new Polygon;
+ this.renderHull(polygon);
+ return polygon.value();
+ }
+ renderTriangle(i, context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {points, triangles} = this;
+ const t0 = triangles[i *= 3] * 2;
+ const t1 = triangles[i + 1] * 2;
+ const t2 = triangles[i + 2] * 2;
+ context.moveTo(points[t0], points[t0 + 1]);
+ context.lineTo(points[t1], points[t1 + 1]);
+ context.lineTo(points[t2], points[t2 + 1]);
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ *trianglePolygons() {
+ const {triangles} = this;
+ for (let i = 0, n = triangles.length / 3; i < n; ++i) {
+ yield this.trianglePolygon(i);
+ }
+ }
+ trianglePolygon(i) {
+ const polygon = new Polygon;
+ this.renderTriangle(i, polygon);
+ return polygon.value();
+ }
+}
+
+function flatArray(points, fx, fy, that) {
+ const n = points.length;
+ const array = new Float64Array(n * 2);
+ for (let i = 0; i < n; ++i) {
+ const p = points[i];
+ array[i * 2] = fx.call(that, p, i, points);
+ array[i * 2 + 1] = fy.call(that, p, i, points);
+ }
+ return array;
+}
+
+function* flatIterable(points, fx, fy, that) {
+ let i = 0;
+ for (const p of points) {
+ yield fx.call(that, p, i, points);
+ yield fy.call(that, p, i, points);
+ ++i;
+ }
+}
+
+exports.Delaunay = Delaunay;
+exports.Voronoi = Voronoi;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-delaunay/dist/d3-delaunay.min.js b/node_modules/d3-delaunay/dist/d3-delaunay.min.js
new file mode 100644
index 00000000..d1c452a0
--- /dev/null
+++ b/node_modules/d3-delaunay/dist/d3-delaunay.min.js
@@ -0,0 +1,2 @@
+// https://github.com/d3/d3-delaunay v6.0.2 Copyright 2018-2021 Observable, Inc., 2021 Mapbox
+!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";const i=134217729;function e(t,i,e,n,s){let l,h,r,o,a=i[0],c=n[0],u=0,f=0;c>a==c>-a?(l=a,a=i[++u]):(l=c,c=n[++f]);let _=0;if(ua==c>-a?(h=a+l,r=l-(h-a),a=i[++u]):(h=c+l,r=l-(h-c),c=n[++f]),l=h,0!==r&&(s[_++]=r);ua==c>-a?(h=l+a,o=h-l,r=l-(h-o)+(a-o),a=i[++u]):(h=l+c,o=h-l,r=l-(h-o)+(c-o),c=n[++f]),l=h,0!==r&&(s[_++]=r);for(;u0!=d>0)return g;const y=Math.abs(_+d);return Math.abs(g)>=33306690738754716e-32*y?g:-function(t,n,a,c,u,f,_){let d,g,y,m,x,p,w,v,b,T,M,A,k,$,P,S,I,z;const F=t-u,U=a-u,K=n-f,L=c-f;$=F*L,p=i*F,w=p-(p-F),v=F-w,p=i*L,b=p-(p-L),T=L-b,P=v*T-($-w*b-v*b-w*T),S=K*U,p=i*K,w=p-(p-K),v=K-w,p=i*U,b=p-(p-U),T=U-b,I=v*T-(S-w*b-v*b-w*T),M=P-I,x=P-M,s[0]=P-(M+x)+(x-I),A=$+M,x=A-$,k=$-(A-x)+(M-x),M=k-S,x=k-M,s[1]=k-(M+x)+(x-S),z=A+M,x=z-A,s[2]=A-(z-x)+(M-x),s[3]=z;let j=function(t,i){let e=i[0];for(let n=1;n=H||-j>=H)return j;if(x=t-F,d=t-(F+x)+(x-u),x=a-U,y=a-(U+x)+(x-u),x=n-K,g=n-(K+x)+(x-f),x=c-L,m=c-(L+x)+(x-f),0===d&&0===g&&0===y&&0===m)return j;if(H=11093356479670487e-47*_+33306690738754706e-32*Math.abs(j),j+=F*m+L*d-(K*y+U*g),j>=H||-j>=H)return j;$=d*L,p=i*d,w=p-(p-d),v=d-w,p=i*L,b=p-(p-L),T=L-b,P=v*T-($-w*b-v*b-w*T),S=g*U,p=i*g,w=p-(p-g),v=g-w,p=i*U,b=p-(p-U),T=U-b,I=v*T-(S-w*b-v*b-w*T),M=P-I,x=P-M,o[0]=P-(M+x)+(x-I),A=$+M,x=A-$,k=$-(A-x)+(M-x),M=k-S,x=k-M,o[1]=k-(M+x)+(x-S),z=A+M,x=z-A,o[2]=A-(z-x)+(M-x),o[3]=z;const E=e(4,s,4,o,l);$=F*m,p=i*F,w=p-(p-F),v=F-w,p=i*m,b=p-(p-m),T=m-b,P=v*T-($-w*b-v*b-w*T),S=K*y,p=i*K,w=p-(p-K),v=K-w,p=i*y,b=p-(p-y),T=y-b,I=v*T-(S-w*b-v*b-w*T),M=P-I,x=P-M,o[0]=P-(M+x)+(x-I),A=$+M,x=A-$,k=$-(A-x)+(M-x),M=k-S,x=k-M,o[1]=k-(M+x)+(x-S),z=A+M,x=z-A,o[2]=A-(z-x)+(M-x),o[3]=z;const C=e(E,l,4,o,h);$=d*m,p=i*d,w=p-(p-d),v=d-w,p=i*m,b=p-(p-m),T=m-b,P=v*T-($-w*b-v*b-w*T),S=g*y,p=i*g,w=p-(p-g),v=g-w,p=i*y,b=p-(p-y),T=y-b,I=v*T-(S-w*b-v*b-w*T),M=P-I,x=P-M,o[0]=P-(M+x)+(x-I),A=$+M,x=A-$,k=$-(A-x)+(M-x),M=k-S,x=k-M,o[1]=k-(M+x)+(x-S),z=A+M,x=z-A,o[2]=A-(z-x)+(M-x),o[3]=z;const N=e(C,h,4,o,r);return r[N-1]}(t,n,a,c,u,f,y)}const c=Math.pow(2,-52),u=new Uint32Array(512);class f{static from(t,i=x,e=p){const n=t.length,s=new Float64Array(2*n);for(let l=0;l>1;if(i>0&&"number"!=typeof t[0])throw new Error("Expected coords to contain numbers.");this.coords=t;const e=Math.max(2*i-5,0);this._triangles=new Uint32Array(3*e),this._halfedges=new Int32Array(3*e),this._hashSize=Math.ceil(Math.sqrt(i)),this._hullPrev=new Uint32Array(i),this._hullNext=new Uint32Array(i),this._hullTri=new Uint32Array(i),this._hullHash=new Int32Array(this._hashSize).fill(-1),this._ids=new Uint32Array(i),this._dists=new Float64Array(i),this.update()}update(){const{coords:t,_hullPrev:i,_hullNext:e,_hullTri:n,_hullHash:s}=this,l=t.length>>1;let h=1/0,r=1/0,o=-1/0,u=-1/0;for(let i=0;io&&(o=e),n>u&&(u=n),this._ids[i]=i}const f=(h+o)/2,d=(r+u)/2;let m,x,p,w=1/0;for(let i=0;i0&&(x=i,w=e)}let T=t[2*x],M=t[2*x+1],A=1/0;for(let i=0;in&&(i[e++]=s,n=this._dists[s])}return this.hull=i.subarray(0,e),this.triangles=new Uint32Array(0),void(this.halfedges=new Uint32Array(0))}if(a(v,b,T,M,k,$)<0){const t=x,i=T,e=M;x=p,T=k,M=$,p=t,k=i,$=e}const P=function(t,i,e,n,s,l){const h=e-t,r=n-i,o=s-t,a=l-i,c=h*h+r*r,u=o*o+a*a,f=.5/(h*a-r*o);return{x:t+(a*c-r*u)*f,y:i+(h*u-o*c)*f}}(v,b,T,M,k,$);this._cx=P.x,this._cy=P.y;for(let i=0;i0&&Math.abs(u-l)<=c&&Math.abs(f-h)<=c)continue;if(l=u,h=f,o===m||o===x||o===p)continue;let _=0;for(let t=0,i=this._hashKey(u,f);t=0;)if(g=d,g===_){g=-1;break}if(-1===g)continue;let y=this._addTriangle(g,o,e[g],-1,-1,n[g]);n[o]=this._legalize(y+2),n[g]=y,S++;let w=e[g];for(;d=e[w],a(u,f,t[2*w],t[2*w+1],t[2*d],t[2*d+1])<0;)y=this._addTriangle(w,o,d,n[o],-1,n[w]),n[o]=this._legalize(y+2),e[w]=w,S--,w=d;if(g===_)for(;d=i[g],a(u,f,t[2*d],t[2*d+1],t[2*g],t[2*g+1])<0;)y=this._addTriangle(d,o,g,-1,n[g],n[d]),this._legalize(y+2),n[d]=y,e[g]=g,S--,g=d;this._hullStart=i[o]=g,e[g]=i[w]=o,e[o]=w,s[this._hashKey(u,f)]=o,s[this._hashKey(t[2*g],t[2*g+1])]=g}this.hull=new Uint32Array(S);for(let t=0,i=this._hullStart;t0?3-e:1+e)/4}(t-this._cx,i-this._cy)*this._hashSize)%this._hashSize}_legalize(t){const{_triangles:i,_halfedges:e,coords:n}=this;let s=0,l=0;for(;;){const h=e[t],r=t-t%3;if(l=r+(t+2)%3,-1===h){if(0===s)break;t=u[--s];continue}const o=h-h%3,a=r+(t+1)%3,c=o+(h+2)%3,f=i[l],_=i[t],g=i[a],y=i[c];if(d(n[2*f],n[2*f+1],n[2*_],n[2*_+1],n[2*g],n[2*g+1],n[2*y],n[2*y+1])){i[t]=y,i[h]=f;const n=e[c];if(-1===n){let i=this._hullStart;do{if(this._hullTri[i]===c){this._hullTri[i]=t;break}i=this._hullPrev[i]}while(i!==this._hullStart)}this._link(t,n),this._link(h,e[l]),this._link(l,c);const r=o+(h+1)%3;s=e&&i[t[h]]>l;)t[h+1]=t[h--];t[h+1]=n}else{let s=e+1,l=n;m(t,e+n>>1,s),i[t[e]]>i[t[n]]&&m(t,e,n),i[t[s]]>i[t[n]]&&m(t,s,n),i[t[e]]>i[t[s]]&&m(t,e,s);const h=t[s],r=i[h];for(;;){do{s++}while(i[t[s]]r);if(l=l-e?(y(t,i,s,n),y(t,i,e,l-1)):(y(t,i,e,l-1),y(t,i,s,n))}}function m(t,i,e){const n=t[i];t[i]=t[e],t[e]=n}function x(t){return t[0]}function p(t){return t[1]}const w=1e-6;class v{constructor(){this._x0=this._y0=this._x1=this._y1=null,this._=""}moveTo(t,i){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}`}closePath(){null!==this._x1&&(this._x1=this._x0,this._y1=this._y0,this._+="Z")}lineTo(t,i){this._+=`L${this._x1=+t},${this._y1=+i}`}arc(t,i,e){const n=(t=+t)+(e=+e),s=i=+i;if(e<0)throw new Error("negative radius");null===this._x1?this._+=`M${n},${s}`:(Math.abs(this._x1-n)>w||Math.abs(this._y1-s)>w)&&(this._+="L"+n+","+s),e&&(this._+=`A${e},${e},0,1,1,${t-e},${i}A${e},${e},0,1,1,${this._x1=n},${this._y1=s}`)}rect(t,i,e,n){this._+=`M${this._x0=this._x1=+t},${this._y0=this._y1=+i}h${+e}v${+n}h${-e}Z`}value(){return this._||null}}class b{constructor(){this._=[]}moveTo(t,i){this._.push([t,i])}closePath(){this._.push(this._[0].slice())}lineTo(t,i){this._.push([t,i])}value(){return this._.length?this._:null}}class T{constructor(t,[i,e,n,s]=[0,0,960,500]){if(!((n=+n)>=(i=+i)&&(s=+s)>=(e=+e)))throw new Error("invalid bounds");this.delaunay=t,this._circumcenters=new Float64Array(2*t.points.length),this.vectors=new Float64Array(2*t.points.length),this.xmax=n,this.xmin=i,this.ymax=s,this.ymin=e,this._init()}update(){return this.delaunay.update(),this._init(),this}_init(){const{delaunay:{points:t,hull:i,triangles:e},vectors:n}=this,s=this.circumcenters=this._circumcenters.subarray(0,e.length/3*2);for(let i,n,l=0,h=0,r=e.length;l1;)s-=2;for(let t=2;t4)for(let t=0;t0){if(i>=this.ymax)return null;(s=(this.ymax-i)/n)0){if(t>=this.xmax)return null;(s=(this.xmax-t)/e)this.xmax?2:0)|(ithis.ymax?8:0)}}const M=2*Math.PI,A=Math.pow;function k(t){return t[0]}function $(t){return t[1]}function P(t,i,e){return[t+Math.sin(t+i)*e,i+Math.cos(t-i)*e]}class S{static from(t,i=k,e=$,n){return new S("length"in t?function(t,i,e,n){const s=t.length,l=new Float64Array(2*s);for(let h=0;h2&&function(t){const{triangles:i,coords:e}=t;for(let t=0;t1e-10)return!1}return!0}(t)){this.collinear=Int32Array.from({length:i.length/2},((t,i)=>i)).sort(((t,e)=>i[2*t]-i[2*e]||i[2*t+1]-i[2*e+1]));const t=this.collinear[0],e=this.collinear[this.collinear.length-1],n=[i[2*t],i[2*t+1],i[2*e],i[2*e+1]],s=1e-8*Math.hypot(n[3]-n[1],n[2]-n[0]);for(let t=0,e=i.length/2;t0&&(this.triangles=new Int32Array(3).fill(-1),this.halfedges=new Int32Array(3).fill(-1),this.triangles[0]=n[0],l[n[0]]=1,2===n.length&&(l[n[1]]=0,this.triangles[1]=n[1],this.triangles[2]=n[1]))}voronoi(t){return new T(this,t)}*neighbors(t){const{inedges:i,hull:e,_hullIndex:n,halfedges:s,triangles:l,collinear:h}=this;if(h){const i=h.indexOf(t);return i>0&&(yield h[i-1]),void(i=0&&s!==e&&s!==n;)e=s;return s}_step(t,i,e){const{inedges:n,hull:s,_hullIndex:l,halfedges:h,triangles:r,points:o}=this;if(-1===n[t]||!o.length)return(t+1)%(o.length>>1);let a=t,c=A(i-o[2*t],2)+A(e-o[2*t+1],2);const u=n[t];let f=u;do{let n=r[f];const u=A(i-o[2*n],2)+A(e-o[2*n+1],2);if(u=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-delaunay.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://github.com/d3/d3-delaunay",
+ "jsdelivr": "dist/d3-delaunay.min.js",
+ "keywords": [
+ "voronoi",
+ "delaunay",
+ "geometry"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-delaunay",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-delaunay.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-delaunay.min.js",
+ "version": "6.0.2"
+}
diff --git a/node_modules/d3-delaunay/src/delaunay.js b/node_modules/d3-delaunay/src/delaunay.js
new file mode 100644
index 00000000..fcb9d247
--- /dev/null
+++ b/node_modules/d3-delaunay/src/delaunay.js
@@ -0,0 +1,248 @@
+import Delaunator from "delaunator";
+import Path from "./path.js";
+import Polygon from "./polygon.js";
+import Voronoi from "./voronoi.js";
+
+const tau = 2 * Math.PI, pow = Math.pow;
+
+function pointX(p) {
+ return p[0];
+}
+
+function pointY(p) {
+ return p[1];
+}
+
+// A triangulation is collinear if all its triangles have a non-null area
+function collinear(d) {
+ const {triangles, coords} = d;
+ for (let i = 0; i < triangles.length; i += 3) {
+ const a = 2 * triangles[i],
+ b = 2 * triangles[i + 1],
+ c = 2 * triangles[i + 2],
+ cross = (coords[c] - coords[a]) * (coords[b + 1] - coords[a + 1])
+ - (coords[b] - coords[a]) * (coords[c + 1] - coords[a + 1]);
+ if (cross > 1e-10) return false;
+ }
+ return true;
+}
+
+function jitter(x, y, r) {
+ return [x + Math.sin(x + y) * r, y + Math.cos(x - y) * r];
+}
+
+export default class Delaunay {
+ static from(points, fx = pointX, fy = pointY, that) {
+ return new Delaunay("length" in points
+ ? flatArray(points, fx, fy, that)
+ : Float64Array.from(flatIterable(points, fx, fy, that)));
+ }
+ constructor(points) {
+ this._delaunator = new Delaunator(points);
+ this.inedges = new Int32Array(points.length / 2);
+ this._hullIndex = new Int32Array(points.length / 2);
+ this.points = this._delaunator.coords;
+ this._init();
+ }
+ update() {
+ this._delaunator.update();
+ this._init();
+ return this;
+ }
+ _init() {
+ const d = this._delaunator, points = this.points;
+
+ // check for collinear
+ if (d.hull && d.hull.length > 2 && collinear(d)) {
+ this.collinear = Int32Array.from({length: points.length/2}, (_,i) => i)
+ .sort((i, j) => points[2 * i] - points[2 * j] || points[2 * i + 1] - points[2 * j + 1]); // for exact neighbors
+ const e = this.collinear[0], f = this.collinear[this.collinear.length - 1],
+ bounds = [ points[2 * e], points[2 * e + 1], points[2 * f], points[2 * f + 1] ],
+ r = 1e-8 * Math.hypot(bounds[3] - bounds[1], bounds[2] - bounds[0]);
+ for (let i = 0, n = points.length / 2; i < n; ++i) {
+ const p = jitter(points[2 * i], points[2 * i + 1], r);
+ points[2 * i] = p[0];
+ points[2 * i + 1] = p[1];
+ }
+ this._delaunator = new Delaunator(points);
+ } else {
+ delete this.collinear;
+ }
+
+ const halfedges = this.halfedges = this._delaunator.halfedges;
+ const hull = this.hull = this._delaunator.hull;
+ const triangles = this.triangles = this._delaunator.triangles;
+ const inedges = this.inedges.fill(-1);
+ const hullIndex = this._hullIndex.fill(-1);
+
+ // Compute an index from each point to an (arbitrary) incoming halfedge
+ // Used to give the first neighbor of each point; for this reason,
+ // on the hull we give priority to exterior halfedges
+ for (let e = 0, n = halfedges.length; e < n; ++e) {
+ const p = triangles[e % 3 === 2 ? e - 2 : e + 1];
+ if (halfedges[e] === -1 || inedges[p] === -1) inedges[p] = e;
+ }
+ for (let i = 0, n = hull.length; i < n; ++i) {
+ hullIndex[hull[i]] = i;
+ }
+
+ // degenerate case: 1 or 2 (distinct) points
+ if (hull.length <= 2 && hull.length > 0) {
+ this.triangles = new Int32Array(3).fill(-1);
+ this.halfedges = new Int32Array(3).fill(-1);
+ this.triangles[0] = hull[0];
+ inedges[hull[0]] = 1;
+ if (hull.length === 2) {
+ inedges[hull[1]] = 0;
+ this.triangles[1] = hull[1];
+ this.triangles[2] = hull[1];
+ }
+ }
+ }
+ voronoi(bounds) {
+ return new Voronoi(this, bounds);
+ }
+ *neighbors(i) {
+ const {inedges, hull, _hullIndex, halfedges, triangles, collinear} = this;
+
+ // degenerate case with several collinear points
+ if (collinear) {
+ const l = collinear.indexOf(i);
+ if (l > 0) yield collinear[l - 1];
+ if (l < collinear.length - 1) yield collinear[l + 1];
+ return;
+ }
+
+ const e0 = inedges[i];
+ if (e0 === -1) return; // coincident point
+ let e = e0, p0 = -1;
+ do {
+ yield p0 = triangles[e];
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) return; // bad triangulation
+ e = halfedges[e];
+ if (e === -1) {
+ const p = hull[(_hullIndex[i] + 1) % hull.length];
+ if (p !== p0) yield p;
+ return;
+ }
+ } while (e !== e0);
+ }
+ find(x, y, i = 0) {
+ if ((x = +x, x !== x) || (y = +y, y !== y)) return -1;
+ const i0 = i;
+ let c;
+ while ((c = this._step(i, x, y)) >= 0 && c !== i && c !== i0) i = c;
+ return c;
+ }
+ _step(i, x, y) {
+ const {inedges, hull, _hullIndex, halfedges, triangles, points} = this;
+ if (inedges[i] === -1 || !points.length) return (i + 1) % (points.length >> 1);
+ let c = i;
+ let dc = pow(x - points[i * 2], 2) + pow(y - points[i * 2 + 1], 2);
+ const e0 = inedges[i];
+ let e = e0;
+ do {
+ let t = triangles[e];
+ const dt = pow(x - points[t * 2], 2) + pow(y - points[t * 2 + 1], 2);
+ if (dt < dc) dc = dt, c = t;
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) break; // bad triangulation
+ e = halfedges[e];
+ if (e === -1) {
+ e = hull[(_hullIndex[i] + 1) % hull.length];
+ if (e !== t) {
+ if (pow(x - points[e * 2], 2) + pow(y - points[e * 2 + 1], 2) < dc) return e;
+ }
+ break;
+ }
+ } while (e !== e0);
+ return c;
+ }
+ render(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {points, halfedges, triangles} = this;
+ for (let i = 0, n = halfedges.length; i < n; ++i) {
+ const j = halfedges[i];
+ if (j < i) continue;
+ const ti = triangles[i] * 2;
+ const tj = triangles[j] * 2;
+ context.moveTo(points[ti], points[ti + 1]);
+ context.lineTo(points[tj], points[tj + 1]);
+ }
+ this.renderHull(context);
+ return buffer && buffer.value();
+ }
+ renderPoints(context, r) {
+ if (r === undefined && (!context || typeof context.moveTo !== "function")) r = context, context = null;
+ r = r == undefined ? 2 : +r;
+ const buffer = context == null ? context = new Path : undefined;
+ const {points} = this;
+ for (let i = 0, n = points.length; i < n; i += 2) {
+ const x = points[i], y = points[i + 1];
+ context.moveTo(x + r, y);
+ context.arc(x, y, r, 0, tau);
+ }
+ return buffer && buffer.value();
+ }
+ renderHull(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {hull, points} = this;
+ const h = hull[0] * 2, n = hull.length;
+ context.moveTo(points[h], points[h + 1]);
+ for (let i = 1; i < n; ++i) {
+ const h = 2 * hull[i];
+ context.lineTo(points[h], points[h + 1]);
+ }
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ hullPolygon() {
+ const polygon = new Polygon;
+ this.renderHull(polygon);
+ return polygon.value();
+ }
+ renderTriangle(i, context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {points, triangles} = this;
+ const t0 = triangles[i *= 3] * 2;
+ const t1 = triangles[i + 1] * 2;
+ const t2 = triangles[i + 2] * 2;
+ context.moveTo(points[t0], points[t0 + 1]);
+ context.lineTo(points[t1], points[t1 + 1]);
+ context.lineTo(points[t2], points[t2 + 1]);
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ *trianglePolygons() {
+ const {triangles} = this;
+ for (let i = 0, n = triangles.length / 3; i < n; ++i) {
+ yield this.trianglePolygon(i);
+ }
+ }
+ trianglePolygon(i) {
+ const polygon = new Polygon;
+ this.renderTriangle(i, polygon);
+ return polygon.value();
+ }
+}
+
+function flatArray(points, fx, fy, that) {
+ const n = points.length;
+ const array = new Float64Array(n * 2);
+ for (let i = 0; i < n; ++i) {
+ const p = points[i];
+ array[i * 2] = fx.call(that, p, i, points);
+ array[i * 2 + 1] = fy.call(that, p, i, points);
+ }
+ return array;
+}
+
+function* flatIterable(points, fx, fy, that) {
+ let i = 0;
+ for (const p of points) {
+ yield fx.call(that, p, i, points);
+ yield fy.call(that, p, i, points);
+ ++i;
+ }
+}
diff --git a/node_modules/d3-delaunay/src/index.js b/node_modules/d3-delaunay/src/index.js
new file mode 100644
index 00000000..dc9022e8
--- /dev/null
+++ b/node_modules/d3-delaunay/src/index.js
@@ -0,0 +1,2 @@
+export {default as Delaunay} from "./delaunay.js";
+export {default as Voronoi} from "./voronoi.js";
diff --git a/node_modules/d3-delaunay/src/path.js b/node_modules/d3-delaunay/src/path.js
new file mode 100644
index 00000000..0eaa69e3
--- /dev/null
+++ b/node_modules/d3-delaunay/src/path.js
@@ -0,0 +1,37 @@
+const epsilon = 1e-6;
+
+export default class Path {
+ constructor() {
+ this._x0 = this._y0 = // start of current subpath
+ this._x1 = this._y1 = null; // end of current subpath
+ this._ = "";
+ }
+ moveTo(x, y) {
+ this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}`;
+ }
+ closePath() {
+ if (this._x1 !== null) {
+ this._x1 = this._x0, this._y1 = this._y0;
+ this._ += "Z";
+ }
+ }
+ lineTo(x, y) {
+ this._ += `L${this._x1 = +x},${this._y1 = +y}`;
+ }
+ arc(x, y, r) {
+ x = +x, y = +y, r = +r;
+ const x0 = x + r;
+ const y0 = y;
+ if (r < 0) throw new Error("negative radius");
+ if (this._x1 === null) this._ += `M${x0},${y0}`;
+ else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) this._ += "L" + x0 + "," + y0;
+ if (!r) return;
+ this._ += `A${r},${r},0,1,1,${x - r},${y}A${r},${r},0,1,1,${this._x1 = x0},${this._y1 = y0}`;
+ }
+ rect(x, y, w, h) {
+ this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}h${+w}v${+h}h${-w}Z`;
+ }
+ value() {
+ return this._ || null;
+ }
+}
diff --git a/node_modules/d3-delaunay/src/polygon.js b/node_modules/d3-delaunay/src/polygon.js
new file mode 100644
index 00000000..bdbbdc30
--- /dev/null
+++ b/node_modules/d3-delaunay/src/polygon.js
@@ -0,0 +1,17 @@
+export default class Polygon {
+ constructor() {
+ this._ = [];
+ }
+ moveTo(x, y) {
+ this._.push([x, y]);
+ }
+ closePath() {
+ this._.push(this._[0].slice());
+ }
+ lineTo(x, y) {
+ this._.push([x, y]);
+ }
+ value() {
+ return this._.length ? this._ : null;
+ }
+}
diff --git a/node_modules/d3-delaunay/src/voronoi.js b/node_modules/d3-delaunay/src/voronoi.js
new file mode 100644
index 00000000..97d388b0
--- /dev/null
+++ b/node_modules/d3-delaunay/src/voronoi.js
@@ -0,0 +1,327 @@
+import Path from "./path.js";
+import Polygon from "./polygon.js";
+
+export default class Voronoi {
+ constructor(delaunay, [xmin, ymin, xmax, ymax] = [0, 0, 960, 500]) {
+ if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds");
+ this.delaunay = delaunay;
+ this._circumcenters = new Float64Array(delaunay.points.length * 2);
+ this.vectors = new Float64Array(delaunay.points.length * 2);
+ this.xmax = xmax, this.xmin = xmin;
+ this.ymax = ymax, this.ymin = ymin;
+ this._init();
+ }
+ update() {
+ this.delaunay.update();
+ this._init();
+ return this;
+ }
+ _init() {
+ const {delaunay: {points, hull, triangles}, vectors} = this;
+
+ // Compute circumcenters.
+ const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2);
+ for (let i = 0, j = 0, n = triangles.length, x, y; i < n; i += 3, j += 2) {
+ const t1 = triangles[i] * 2;
+ const t2 = triangles[i + 1] * 2;
+ const t3 = triangles[i + 2] * 2;
+ const x1 = points[t1];
+ const y1 = points[t1 + 1];
+ const x2 = points[t2];
+ const y2 = points[t2 + 1];
+ const x3 = points[t3];
+ const y3 = points[t3 + 1];
+
+ const dx = x2 - x1;
+ const dy = y2 - y1;
+ const ex = x3 - x1;
+ const ey = y3 - y1;
+ const ab = (dx * ey - dy * ex) * 2;
+
+ if (Math.abs(ab) < 1e-9) {
+ // degenerate case (collinear diagram)
+ // almost equal points (degenerate triangle)
+ // the circumcenter is at the infinity, in a
+ // direction that is:
+ // 1. orthogonal to the halfedge.
+ let a = 1e9;
+ // 2. points away from the center; since the list of triangles starts
+ // in the center, the first point of the first triangle
+ // will be our reference
+ const r = triangles[0] * 2;
+ a *= Math.sign((points[r] - x1) * ey - (points[r + 1] - y1) * ex);
+ x = (x1 + x3) / 2 - a * ey;
+ y = (y1 + y3) / 2 + a * ex;
+ } else {
+ const d = 1 / ab;
+ const bl = dx * dx + dy * dy;
+ const cl = ex * ex + ey * ey;
+ x = x1 + (ey * bl - dy * cl) * d;
+ y = y1 + (dx * cl - ex * bl) * d;
+ }
+ circumcenters[j] = x;
+ circumcenters[j + 1] = y;
+ }
+
+ // Compute exterior cell rays.
+ let h = hull[hull.length - 1];
+ let p0, p1 = h * 4;
+ let x0, x1 = points[2 * h];
+ let y0, y1 = points[2 * h + 1];
+ vectors.fill(0);
+ for (let i = 0; i < hull.length; ++i) {
+ h = hull[i];
+ p0 = p1, x0 = x1, y0 = y1;
+ p1 = h * 4, x1 = points[2 * h], y1 = points[2 * h + 1];
+ vectors[p0 + 2] = vectors[p1] = y0 - y1;
+ vectors[p0 + 3] = vectors[p1 + 1] = x1 - x0;
+ }
+ }
+ render(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const {delaunay: {halfedges, inedges, hull}, circumcenters, vectors} = this;
+ if (hull.length <= 1) return null;
+ for (let i = 0, n = halfedges.length; i < n; ++i) {
+ const j = halfedges[i];
+ if (j < i) continue;
+ const ti = Math.floor(i / 3) * 2;
+ const tj = Math.floor(j / 3) * 2;
+ const xi = circumcenters[ti];
+ const yi = circumcenters[ti + 1];
+ const xj = circumcenters[tj];
+ const yj = circumcenters[tj + 1];
+ this._renderSegment(xi, yi, xj, yj, context);
+ }
+ let h0, h1 = hull[hull.length - 1];
+ for (let i = 0; i < hull.length; ++i) {
+ h0 = h1, h1 = hull[i];
+ const t = Math.floor(inedges[h1] / 3) * 2;
+ const x = circumcenters[t];
+ const y = circumcenters[t + 1];
+ const v = h0 * 4;
+ const p = this._project(x, y, vectors[v + 2], vectors[v + 3]);
+ if (p) this._renderSegment(x, y, p[0], p[1], context);
+ }
+ return buffer && buffer.value();
+ }
+ renderBounds(context) {
+ const buffer = context == null ? context = new Path : undefined;
+ context.rect(this.xmin, this.ymin, this.xmax - this.xmin, this.ymax - this.ymin);
+ return buffer && buffer.value();
+ }
+ renderCell(i, context) {
+ const buffer = context == null ? context = new Path : undefined;
+ const points = this._clip(i);
+ if (points === null || !points.length) return;
+ context.moveTo(points[0], points[1]);
+ let n = points.length;
+ while (points[0] === points[n-2] && points[1] === points[n-1] && n > 1) n -= 2;
+ for (let i = 2; i < n; i += 2) {
+ if (points[i] !== points[i-2] || points[i+1] !== points[i-1])
+ context.lineTo(points[i], points[i + 1]);
+ }
+ context.closePath();
+ return buffer && buffer.value();
+ }
+ *cellPolygons() {
+ const {delaunay: {points}} = this;
+ for (let i = 0, n = points.length / 2; i < n; ++i) {
+ const cell = this.cellPolygon(i);
+ if (cell) cell.index = i, yield cell;
+ }
+ }
+ cellPolygon(i) {
+ const polygon = new Polygon;
+ this.renderCell(i, polygon);
+ return polygon.value();
+ }
+ _renderSegment(x0, y0, x1, y1, context) {
+ let S;
+ const c0 = this._regioncode(x0, y0);
+ const c1 = this._regioncode(x1, y1);
+ if (c0 === 0 && c1 === 0) {
+ context.moveTo(x0, y0);
+ context.lineTo(x1, y1);
+ } else if (S = this._clipSegment(x0, y0, x1, y1, c0, c1)) {
+ context.moveTo(S[0], S[1]);
+ context.lineTo(S[2], S[3]);
+ }
+ }
+ contains(i, x, y) {
+ if ((x = +x, x !== x) || (y = +y, y !== y)) return false;
+ return this.delaunay._step(i, x, y) === i;
+ }
+ *neighbors(i) {
+ const ci = this._clip(i);
+ if (ci) for (const j of this.delaunay.neighbors(i)) {
+ const cj = this._clip(j);
+ // find the common edge
+ if (cj) loop: for (let ai = 0, li = ci.length; ai < li; ai += 2) {
+ for (let aj = 0, lj = cj.length; aj < lj; aj += 2) {
+ if (ci[ai] == cj[aj]
+ && ci[ai + 1] == cj[aj + 1]
+ && ci[(ai + 2) % li] == cj[(aj + lj - 2) % lj]
+ && ci[(ai + 3) % li] == cj[(aj + lj - 1) % lj]
+ ) {
+ yield j;
+ break loop;
+ }
+ }
+ }
+ }
+ }
+ _cell(i) {
+ const {circumcenters, delaunay: {inedges, halfedges, triangles}} = this;
+ const e0 = inedges[i];
+ if (e0 === -1) return null; // coincident point
+ const points = [];
+ let e = e0;
+ do {
+ const t = Math.floor(e / 3);
+ points.push(circumcenters[t * 2], circumcenters[t * 2 + 1]);
+ e = e % 3 === 2 ? e - 2 : e + 1;
+ if (triangles[e] !== i) break; // bad triangulation
+ e = halfedges[e];
+ } while (e !== e0 && e !== -1);
+ return points;
+ }
+ _clip(i) {
+ // degenerate case (1 valid point: return the box)
+ if (i === 0 && this.delaunay.hull.length === 1) {
+ return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin];
+ }
+ const points = this._cell(i);
+ if (points === null) return null;
+ const {vectors: V} = this;
+ const v = i * 4;
+ return V[v] || V[v + 1]
+ ? this._clipInfinite(i, points, V[v], V[v + 1], V[v + 2], V[v + 3])
+ : this._clipFinite(i, points);
+ }
+ _clipFinite(i, points) {
+ const n = points.length;
+ let P = null;
+ let x0, y0, x1 = points[n - 2], y1 = points[n - 1];
+ let c0, c1 = this._regioncode(x1, y1);
+ let e0, e1 = 0;
+ for (let j = 0; j < n; j += 2) {
+ x0 = x1, y0 = y1, x1 = points[j], y1 = points[j + 1];
+ c0 = c1, c1 = this._regioncode(x1, y1);
+ if (c0 === 0 && c1 === 0) {
+ e0 = e1, e1 = 0;
+ if (P) P.push(x1, y1);
+ else P = [x1, y1];
+ } else {
+ let S, sx0, sy0, sx1, sy1;
+ if (c0 === 0) {
+ if ((S = this._clipSegment(x0, y0, x1, y1, c0, c1)) === null) continue;
+ [sx0, sy0, sx1, sy1] = S;
+ } else {
+ if ((S = this._clipSegment(x1, y1, x0, y0, c1, c0)) === null) continue;
+ [sx1, sy1, sx0, sy0] = S;
+ e0 = e1, e1 = this._edgecode(sx0, sy0);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ if (P) P.push(sx0, sy0);
+ else P = [sx0, sy0];
+ }
+ e0 = e1, e1 = this._edgecode(sx1, sy1);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ if (P) P.push(sx1, sy1);
+ else P = [sx1, sy1];
+ }
+ }
+ if (P) {
+ e0 = e1, e1 = this._edgecode(P[0], P[1]);
+ if (e0 && e1) this._edge(i, e0, e1, P, P.length);
+ } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) {
+ return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin];
+ }
+ return P;
+ }
+ _clipSegment(x0, y0, x1, y1, c0, c1) {
+ while (true) {
+ if (c0 === 0 && c1 === 0) return [x0, y0, x1, y1];
+ if (c0 & c1) return null;
+ let x, y, c = c0 || c1;
+ if (c & 0b1000) x = x0 + (x1 - x0) * (this.ymax - y0) / (y1 - y0), y = this.ymax;
+ else if (c & 0b0100) x = x0 + (x1 - x0) * (this.ymin - y0) / (y1 - y0), y = this.ymin;
+ else if (c & 0b0010) y = y0 + (y1 - y0) * (this.xmax - x0) / (x1 - x0), x = this.xmax;
+ else y = y0 + (y1 - y0) * (this.xmin - x0) / (x1 - x0), x = this.xmin;
+ if (c0) x0 = x, y0 = y, c0 = this._regioncode(x0, y0);
+ else x1 = x, y1 = y, c1 = this._regioncode(x1, y1);
+ }
+ }
+ _clipInfinite(i, points, vx0, vy0, vxn, vyn) {
+ let P = Array.from(points), p;
+ if (p = this._project(P[0], P[1], vx0, vy0)) P.unshift(p[0], p[1]);
+ if (p = this._project(P[P.length - 2], P[P.length - 1], vxn, vyn)) P.push(p[0], p[1]);
+ if (P = this._clipFinite(i, P)) {
+ for (let j = 0, n = P.length, c0, c1 = this._edgecode(P[n - 2], P[n - 1]); j < n; j += 2) {
+ c0 = c1, c1 = this._edgecode(P[j], P[j + 1]);
+ if (c0 && c1) j = this._edge(i, c0, c1, P, j), n = P.length;
+ }
+ } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) {
+ P = [this.xmin, this.ymin, this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax];
+ }
+ return P;
+ }
+ _edge(i, e0, e1, P, j) {
+ while (e0 !== e1) {
+ let x, y;
+ switch (e0) {
+ case 0b0101: e0 = 0b0100; continue; // top-left
+ case 0b0100: e0 = 0b0110, x = this.xmax, y = this.ymin; break; // top
+ case 0b0110: e0 = 0b0010; continue; // top-right
+ case 0b0010: e0 = 0b1010, x = this.xmax, y = this.ymax; break; // right
+ case 0b1010: e0 = 0b1000; continue; // bottom-right
+ case 0b1000: e0 = 0b1001, x = this.xmin, y = this.ymax; break; // bottom
+ case 0b1001: e0 = 0b0001; continue; // bottom-left
+ case 0b0001: e0 = 0b0101, x = this.xmin, y = this.ymin; break; // left
+ }
+ // Note: this implicitly checks for out of bounds: if P[j] or P[j+1] are
+ // undefined, the conditional statement will be executed.
+ if ((P[j] !== x || P[j + 1] !== y) && this.contains(i, x, y)) {
+ P.splice(j, 0, x, y), j += 2;
+ }
+ }
+ if (P.length > 4) {
+ for (let i = 0; i < P.length; i+= 2) {
+ const j = (i + 2) % P.length, k = (i + 4) % P.length;
+ if (P[i] === P[j] && P[j] === P[k]
+ || P[i + 1] === P[j + 1] && P[j + 1] === P[k + 1])
+ P.splice(j, 2), i -= 2;
+ }
+ }
+ return j;
+ }
+ _project(x0, y0, vx, vy) {
+ let t = Infinity, c, x, y;
+ if (vy < 0) { // top
+ if (y0 <= this.ymin) return null;
+ if ((c = (this.ymin - y0) / vy) < t) y = this.ymin, x = x0 + (t = c) * vx;
+ } else if (vy > 0) { // bottom
+ if (y0 >= this.ymax) return null;
+ if ((c = (this.ymax - y0) / vy) < t) y = this.ymax, x = x0 + (t = c) * vx;
+ }
+ if (vx > 0) { // right
+ if (x0 >= this.xmax) return null;
+ if ((c = (this.xmax - x0) / vx) < t) x = this.xmax, y = y0 + (t = c) * vy;
+ } else if (vx < 0) { // left
+ if (x0 <= this.xmin) return null;
+ if ((c = (this.xmin - x0) / vx) < t) x = this.xmin, y = y0 + (t = c) * vy;
+ }
+ return [x, y];
+ }
+ _edgecode(x, y) {
+ return (x === this.xmin ? 0b0001
+ : x === this.xmax ? 0b0010 : 0b0000)
+ | (y === this.ymin ? 0b0100
+ : y === this.ymax ? 0b1000 : 0b0000);
+ }
+ _regioncode(x, y) {
+ return (x < this.xmin ? 0b0001
+ : x > this.xmax ? 0b0010 : 0b0000)
+ | (y < this.ymin ? 0b0100
+ : y > this.ymax ? 0b1000 : 0b0000);
+ }
+}
diff --git a/node_modules/d3-dispatch/LICENSE b/node_modules/d3-dispatch/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-dispatch/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-dispatch/README.md b/node_modules/d3-dispatch/README.md
new file mode 100644
index 00000000..9963a847
--- /dev/null
+++ b/node_modules/d3-dispatch/README.md
@@ -0,0 +1,94 @@
+# d3-dispatch
+
+Dispatching is a convenient mechanism for separating concerns with loosely-coupled code: register named callbacks and then call them with arbitrary arguments. A variety of D3 components, such as [d3-drag](https://github.com/d3/d3-drag), use this mechanism to emit events to listeners. Think of this like Node’s [EventEmitter](https://nodejs.org/api/events.html), except every listener has a well-defined name so it’s easy to remove or replace them.
+
+For example, to create a dispatch for *start* and *end* events:
+
+```js
+const dispatch = d3.dispatch("start", "end");
+```
+
+You can then register callbacks for these events using [*dispatch*.on](#dispatch_on):
+
+```js
+dispatch.on("start", callback1);
+dispatch.on("start.foo", callback2);
+dispatch.on("end", callback3);
+```
+
+Then, you can invoke all the *start* callbacks using [*dispatch*.call](#dispatch_call) or [*dispatch*.apply](#dispatch_apply):
+
+```js
+dispatch.call("start");
+```
+
+Like *function*.call, you may also specify the `this` context and any arguments:
+
+```js
+dispatch.call("start", {about: "I am a context object"}, "I am an argument");
+```
+
+Want a more involved example? See how to use [d3-dispatch for coordinated views](http://bl.ocks.org/mbostock/5872848).
+
+## Installing
+
+If you use npm, `npm install d3-dispatch`. You can also download the [latest release on GitHub](https://github.com/d3/d3-dispatch/releases/latest). For vanilla HTML in modern browsers, import d3-dispatch from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-dispatch’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+[Try d3-dispatch in your browser.](https://observablehq.com/collection/@d3/d3-dispatch)
+
+## API Reference
+
+# d3.dispatch (types… ) · [Source](https://github.com/d3/d3-dispatch/blob/master/src/dispatch.js)
+
+Creates a new dispatch for the specified event *types*. Each *type* is a string, such as `"start"` or `"end"`.
+
+# *dispatch*.on (typenames [, callback ]) · [Source](https://github.com/d3/d3-dispatch/blob/master/src/dispatch.js)
+
+Adds, removes or gets the *callback* for the specified *typenames*. If a *callback* function is specified, it is registered for the specified (fully-qualified) *typenames*. If a callback was already registered for the given *typenames*, the existing callback is removed before the new callback is added.
+
+The specified *typenames* is a string, such as `start` or `end.foo`. The type may be optionally followed by a period (`.`) and a name; the optional name allows multiple callbacks to be registered to receive events of the same type, such as `start.foo` and `start.bar`. To specify multiple typenames, separate typenames with spaces, such as `start end` or `start.foo start.bar`.
+
+To remove all callbacks for a given name `foo`, say `dispatch.on(".foo", null)`.
+
+If *callback* is not specified, returns the current callback for the specified *typenames*, if any. If multiple typenames are specified, the first matching callback is returned.
+
+# *dispatch*.copy () · [Source](https://github.com/d3/d3-dispatch/blob/master/src/dispatch.js)
+
+Returns a copy of this dispatch object. Changes to this dispatch do not affect the returned copy and vice versa .
+
+# *dispatch*.call (type [, that [, arguments… ]]) · [Source](https://github.com/d3/d3-dispatch/blob/master/src/dispatch.js)
+
+Like [*function*.call](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call), invokes each registered callback for the specified *type*, passing the callback the specified *arguments*, with *that* as the `this` context. See [*dispatch*.apply](#dispatch_apply) for more information.
+
+# *dispatch*.apply (type [, that [, arguments ]]) · [Source](https://github.com/d3/d3-dispatch/blob/master/src/dispatch.js)
+
+Like [*function*.apply](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call), invokes each registered callback for the specified *type*, passing the callback the specified *arguments*, with *that* as the `this` context. For example, if you wanted to dispatch your *custom* callbacks after handling a native *click* event, while preserving the current `this` context and arguments, you could say:
+
+```js
+selection.on("click", function() {
+ dispatch.apply("custom", this, arguments);
+});
+```
+
+You can pass whatever arguments you want to callbacks; most commonly, you might create an object that represents an event, or pass the current datum (*d*) and index (*i*). See [function.call](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/Call) and [function.apply](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/Apply) for further information.
diff --git a/node_modules/d3-dispatch/dist/d3-dispatch.js b/node_modules/d3-dispatch/dist/d3-dispatch.js
new file mode 100644
index 00000000..178c7c9f
--- /dev/null
+++ b/node_modules/d3-dispatch/dist/d3-dispatch.js
@@ -0,0 +1,95 @@
+// https://d3js.org/d3-dispatch/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+var noop = {value: () => {}};
+
+function dispatch() {
+ for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
+ if (!(t = arguments[i] + "") || (t in _) || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
+ _[t] = [];
+ }
+ return new Dispatch(_);
+}
+
+function Dispatch(_) {
+ this._ = _;
+}
+
+function parseTypenames(typenames, types) {
+ return typenames.trim().split(/^|\s+/).map(function(t) {
+ var name = "", i = t.indexOf(".");
+ if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+ if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
+ return {type: t, name: name};
+ });
+}
+
+Dispatch.prototype = dispatch.prototype = {
+ constructor: Dispatch,
+ on: function(typename, callback) {
+ var _ = this._,
+ T = parseTypenames(typename + "", _),
+ t,
+ i = -1,
+ n = T.length;
+
+ // If no callback was specified, return the callback of the given type and name.
+ if (arguments.length < 2) {
+ while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
+ return;
+ }
+
+ // If a type was specified, set the callback for the given type and name.
+ // Otherwise, if a null callback was specified, remove callbacks of the given name.
+ if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
+ while (++i < n) {
+ if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback);
+ else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null);
+ }
+
+ return this;
+ },
+ copy: function() {
+ var copy = {}, _ = this._;
+ for (var t in _) copy[t] = _[t].slice();
+ return new Dispatch(copy);
+ },
+ call: function(type, that) {
+ if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
+ if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+ for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+ },
+ apply: function(type, that, args) {
+ if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+ for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+ }
+};
+
+function get(type, name) {
+ for (var i = 0, n = type.length, c; i < n; ++i) {
+ if ((c = type[i]).name === name) {
+ return c.value;
+ }
+ }
+}
+
+function set(type, name, callback) {
+ for (var i = 0, n = type.length; i < n; ++i) {
+ if (type[i].name === name) {
+ type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));
+ break;
+ }
+ }
+ if (callback != null) type.push({name: name, value: callback});
+ return type;
+}
+
+exports.dispatch = dispatch;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-dispatch/dist/d3-dispatch.min.js b/node_modules/d3-dispatch/dist/d3-dispatch.min.js
new file mode 100644
index 00000000..608d2f71
--- /dev/null
+++ b/node_modules/d3-dispatch/dist/d3-dispatch.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-dispatch/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(n,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{})}(this,(function(n){"use strict";var e={value:()=>{}};function t(){for(var n,e=0,t=arguments.length,o={};e=0&&(t=n.slice(r+1),n=n.slice(0,r)),n&&!e.hasOwnProperty(n))throw new Error("unknown type: "+n);return{type:n,name:t}}))}function i(n,e){for(var t,r=0,o=n.length;r0)for(var t,r,o=new Array(t),i=0;i=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-dispatch.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-dispatch/",
+ "jsdelivr": "dist/d3-dispatch.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "event",
+ "listener",
+ "dispatch"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-dispatch",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-dispatch.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-dispatch.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-dispatch/src/dispatch.js b/node_modules/d3-dispatch/src/dispatch.js
new file mode 100644
index 00000000..c93ac4fa
--- /dev/null
+++ b/node_modules/d3-dispatch/src/dispatch.js
@@ -0,0 +1,84 @@
+var noop = {value: () => {}};
+
+function dispatch() {
+ for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
+ if (!(t = arguments[i] + "") || (t in _) || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
+ _[t] = [];
+ }
+ return new Dispatch(_);
+}
+
+function Dispatch(_) {
+ this._ = _;
+}
+
+function parseTypenames(typenames, types) {
+ return typenames.trim().split(/^|\s+/).map(function(t) {
+ var name = "", i = t.indexOf(".");
+ if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+ if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
+ return {type: t, name: name};
+ });
+}
+
+Dispatch.prototype = dispatch.prototype = {
+ constructor: Dispatch,
+ on: function(typename, callback) {
+ var _ = this._,
+ T = parseTypenames(typename + "", _),
+ t,
+ i = -1,
+ n = T.length;
+
+ // If no callback was specified, return the callback of the given type and name.
+ if (arguments.length < 2) {
+ while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
+ return;
+ }
+
+ // If a type was specified, set the callback for the given type and name.
+ // Otherwise, if a null callback was specified, remove callbacks of the given name.
+ if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
+ while (++i < n) {
+ if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback);
+ else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null);
+ }
+
+ return this;
+ },
+ copy: function() {
+ var copy = {}, _ = this._;
+ for (var t in _) copy[t] = _[t].slice();
+ return new Dispatch(copy);
+ },
+ call: function(type, that) {
+ if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
+ if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+ for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+ },
+ apply: function(type, that, args) {
+ if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+ for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+ }
+};
+
+function get(type, name) {
+ for (var i = 0, n = type.length, c; i < n; ++i) {
+ if ((c = type[i]).name === name) {
+ return c.value;
+ }
+ }
+}
+
+function set(type, name, callback) {
+ for (var i = 0, n = type.length; i < n; ++i) {
+ if (type[i].name === name) {
+ type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));
+ break;
+ }
+ }
+ if (callback != null) type.push({name: name, value: callback});
+ return type;
+}
+
+export default dispatch;
diff --git a/node_modules/d3-dispatch/src/index.js b/node_modules/d3-dispatch/src/index.js
new file mode 100644
index 00000000..4b8d3bdd
--- /dev/null
+++ b/node_modules/d3-dispatch/src/index.js
@@ -0,0 +1 @@
+export {default as dispatch} from "./dispatch.js";
diff --git a/node_modules/d3-drag/LICENSE b/node_modules/d3-drag/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-drag/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-drag/README.md b/node_modules/d3-drag/README.md
new file mode 100644
index 00000000..f0f4d7c2
--- /dev/null
+++ b/node_modules/d3-drag/README.md
@@ -0,0 +1,248 @@
+# d3-drag
+
+[Drag-and-drop](https://en.wikipedia.org/wiki/Drag_and_drop) is a popular and easy-to-learn pointing gesture: move the pointer to an object, press and hold to grab it, “drag” the object to a new location, and release to “drop”. D3’s [drag behavior](#api-reference) provides a convenient but flexible abstraction for enabling drag-and-drop interaction on [selections](https://github.com/d3/d3-selection). For example, you can use d3-drag to facilitate interaction with a [force-directed graph](https://github.com/d3/d3-force), or a simulation of colliding circles:
+
+[# d3.drag () · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/collection/@d3/d3-drag)
+
+Creates a new drag behavior. The returned behavior, [*drag*](#_drag), is both an object and a function, and is typically applied to selected elements via [*selection*.call](https://github.com/d3/d3-selection#selection_call).
+
+# drag (selection ) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/collection/@d3/d3-drag)
+
+Applies this drag behavior to the specified [*selection*](https://github.com/d3/d3-selection). This function is typically not invoked directly, and is instead invoked via [*selection*.call](https://github.com/d3/d3-selection#selection_call). For example, to instantiate a drag behavior and apply it to a selection:
+
+```js
+d3.selectAll(".node").call(d3.drag().on("start", started));
+```
+
+Internally, the drag behavior uses [*selection*.on](https://github.com/d3/d3-selection#selection_on) to bind the necessary event listeners for dragging. The listeners use the name `.drag`, so you can subsequently unbind the drag behavior as follows:
+
+```js
+selection.on(".drag", null);
+```
+
+Applying the drag behavior also sets the [-webkit-tap-highlight-color](https://developer.apple.com/library/mac/documentation/AppleApplications/Reference/SafariWebContent/AdjustingtheTextSize/AdjustingtheTextSize.html#//apple_ref/doc/uid/TP40006510-SW5) style to transparent, disabling the tap highlight on iOS. If you want a different tap highlight color, remove or re-apply this style after applying the drag behavior.
+
+# drag .container ([container ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/collection/@d3/d3-drag)
+
+If *container* is specified, sets the container accessor to the specified object or function and returns the drag behavior. If *container* is not specified, returns the current container accessor, which defaults to:
+
+```js
+function container() {
+ return this.parentNode;
+}
+```
+
+The *container* of a drag gesture determines the coordinate system of subsequent [drag events](#drag-events), affecting *event*.x and *event*.y. The element returned by the container accessor is subsequently passed to [d3.pointer](https://github.com/d3/d3-selection#pointer) to determine the local coordinates of the pointer.
+
+The default container accessor returns the parent node of the element in the originating selection (see [*drag*](#_drag)) that received the initiating input event. This is often appropriate when dragging SVG or HTML elements, since those elements are typically positioned relative to a parent. For dragging graphical elements with a Canvas, however, you may want to redefine the container as the initiating element itself:
+
+```js
+function container() {
+ return this;
+}
+```
+
+Alternatively, the container may be specified as the element directly, such as `drag.container(canvas)`.
+
+
+# drag .filter ([filter ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/d/c55a5839a5bb7c73)
+
+If *filter* is specified, sets the event filter to the specified function and returns the drag behavior. If *filter* is not specified, returns the current filter, which defaults to:
+
+```js
+function filter(event) {
+ return !event.ctrlKey && !event.button;
+}
+```
+
+If the filter returns falsey, the initiating event is ignored and no drag gestures are started. Thus, the filter determines which input events are ignored; the default filter ignores mousedown events on secondary buttons, since those buttons are typically intended for other purposes, such as the context menu.
+
+# drag .touchable ([touchable ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/d/c55a5839a5bb7c73)
+
+If *touchable* is specified, sets the touch support detector to the specified function and returns the drag behavior. If *touchable* is not specified, returns the current touch support detector, which defaults to:
+
+```js
+function touchable() {
+ return navigator.maxTouchPoints || ("ontouchstart" in this);
+}
+```
+
+Touch event listeners are only registered if the detector returns truthy for the corresponding element when the drag behavior is [applied](#_drag). The default detector works well for most browsers that are capable of touch input, but not all; Chrome’s mobile device emulator, for example, fails detection.
+
+# drag .subject ([subject ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js), [Examples](https://observablehq.com/collection/@d3/d3-drag)
+
+If *subject* is specified, sets the subject accessor to the specified object or function and returns the drag behavior. If *subject* is not specified, returns the current subject accessor, which defaults to:
+
+```js
+function subject(event, d) {
+ return d == null ? {x: event.x, y: event.y} : d;
+}
+```
+
+The *subject* of a drag gesture represents *the thing being dragged*. It is computed when an initiating input event is received, such as a mousedown or touchstart, immediately before the drag gesture starts. The subject is then exposed as *event*.subject on subsequent [drag events](#drag-events) for this gesture.
+
+The default subject is the [datum](https://github.com/d3/d3-selection#selection_datum) of the element in the originating selection (see [*drag*](#_drag)) that received the initiating input event; if this datum is undefined, an object representing the coordinates of the pointer is created. When dragging circle elements in SVG, the default subject is thus the datum of the circle being dragged. With [Canvas](https://html.spec.whatwg.org/multipage/scripting.html#the-canvas-element), the default subject is the canvas element’s datum (regardless of where on the canvas you click). In this case, a custom subject accessor would be more appropriate, such as one that picks the closest circle to the mouse within a given search *radius*:
+
+```js
+function subject(event) {
+ let n = circles.length,
+ i,
+ dx,
+ dy,
+ d2,
+ s2 = radius * radius,
+ circle,
+ subject;
+
+ for (i = 0; i < n; ++i) {
+ circle = circles[i];
+ dx = event.x - circle.x;
+ dy = event.y - circle.y;
+ d2 = dx * dx + dy * dy;
+ if (d2 < s2) subject = circle, s2 = d2;
+ }
+
+ return subject;
+}
+```
+
+(If necessary, the above can be accelerated using [*quadtree*.find](https://github.com/d3/d3-quadtree/blob/master/README.md#quadtree_find), [*simulation*.find](https://github.com/d3/d3-force/blob/master/README.md#simulation_find) or [*delaunay*.find](https://github.com/d3/d3-delaunay/blob/master/README.md#delaunay_find).)
+
+The returned subject should be an object that exposes `x` and `y` properties, so that the relative position of the subject and the pointer can be preserved during the drag gesture. If the subject is null or undefined, no drag gesture is started for this pointer; however, other starting touches may yet start drag gestures. See also [*drag*.filter](#drag_filter).
+
+The subject of a drag gesture may not be changed after the gesture starts. The subject accessor is invoked with the same context and arguments as [*selection*.on](https://github.com/d3/d3-selection#selection_on) listeners: the current event (`event`) and datum `d`, with the `this` context as the current DOM element. During the evaluation of the subject accessor, `event` is a beforestart [drag event](#drag-events). Use *event*.sourceEvent to access the initiating input event and *event*.identifier to access the touch identifier. The *event*.x and *event*.y are relative to the [container](#drag_container), and are computed using [d3.pointer](https://github.com/d3/d3-selection#pointer).
+
+# drag .clickDistance ([distance ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js)
+
+If *distance* is specified, sets the maximum distance that the mouse can move between mousedown and mouseup that will trigger a subsequent click event. If at any point between mousedown and mouseup the mouse is greater than or equal to *distance* from its position on mousedown, the click event following mouseup will be suppressed. If *distance* is not specified, returns the current distance threshold, which defaults to zero. The distance threshold is measured in client coordinates ([*event*.clientX](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/clientX) and [*event*.clientY](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/clientY)).
+
+# drag .on (typenames , [listener ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/drag.js)
+
+If *listener* is specified, sets the event *listener* for the specified *typenames* and returns the drag behavior. If an event listener was already registered for the same type and name, the existing listener is removed before the new listener is added. If *listener* is null, removes the current event listeners for the specified *typenames*, if any. If *listener* is not specified, returns the first currently-assigned listener matching the specified *typenames*, if any. When a specified event is dispatched, each *listener* will be invoked with the same context and arguments as [*selection*.on](https://github.com/d3/d3-selection#selection_on) listeners: the current event (`event`) and datum `d`, with the `this` context as the current DOM element.
+
+The *typenames* is a string containing one or more *typename* separated by whitespace. Each *typename* is a *type*, optionally followed by a period (`.`) and a *name*, such as `drag.foo` and `drag.bar`; the name allows multiple listeners to be registered for the same *type*. The *type* must be one of the following:
+
+* `start` - after a new pointer becomes active (on mousedown or touchstart).
+* `drag` - after an active pointer moves (on mousemove or touchmove).
+* `end` - after an active pointer becomes inactive (on mouseup, touchend or touchcancel).
+
+See [*dispatch*.on](https://github.com/d3/d3-dispatch#dispatch_on) for more.
+
+Changes to registered listeners via *drag*.on during a drag gesture *do not affect* the current drag gesture. Instead, you must use [*event*.on](#event_on), which also allows you to register temporary event listeners for the current drag gesture. **Separate events are dispatched for each active pointer** during a drag gesture. For example, if simultaneously dragging multiple subjects with multiple fingers, a start event is dispatched for each finger, even if both fingers start touching simultaneously. See [Drag Events](#drag-events) for more.
+
+# d3.dragDisable (window ) · [Source](https://github.com/d3/d3-drag/blob/master/src/nodrag.js)
+
+Prevents native drag-and-drop and text selection on the specified *window*. As an alternative to preventing the default action of mousedown events (see [#9](https://github.com/d3/d3-drag/issues/9)), this method prevents undesirable default actions following mousedown. In supported browsers, this means capturing dragstart and selectstart events, preventing the associated default actions, and immediately stopping their propagation. In browsers that do not support selection events, the user-select CSS property is set to none on the document element. This method is intended to be called on mousedown, followed by [d3.dragEnable](#dragEnable) on mouseup.
+
+# d3.dragEnable (window [, noclick ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/nodrag.js)
+
+Allows native drag-and-drop and text selection on the specified *window*; undoes the effect of [d3.dragDisable](#dragDisable). This method is intended to be called on mouseup, preceded by [d3.dragDisable](#dragDisable) on mousedown. If *noclick* is true, this method also temporarily suppresses click events. The suppression of click events expires after a zero-millisecond timeout, such that it only suppress the click event that would immediately follow the current mouseup event, if any.
+
+### Drag Events
+
+When a [drag event listener](#drag_on) is invoked, it receives the current drag event as its first argument. The *event* object exposes several fields:
+
+* `target` - the associated [drag behavior](#drag).
+* `type` - the string “start”, “drag” or “end”; see [*drag*.on](#drag_on).
+* `subject` - the drag subject, defined by [*drag*.subject](#drag_subject).
+* `x` - the new *x*-coordinate of the subject; see [*drag*.container](#drag_container).
+* `y` - the new *y*-coordinate of the subject; see [*drag*.container](#drag_container).
+* `dx` - the change in *x*-coordinate since the previous drag event.
+* `dy` - the change in *y*-coordinate since the previous drag event.
+* `identifier` - the string “mouse”, or a numeric [touch identifier](https://www.w3.org/TR/touch-events/#widl-Touch-identifier).
+* `active` - the number of currently active drag gestures (on start and end, not including this one).
+* `sourceEvent` - the underlying input event, such as mousemove or touchmove.
+
+The *event*.active field is useful for detecting the first start event and the last end event in a sequence of concurrent drag gestures: it is zero when the first drag gesture starts, and zero when the last drag gesture ends.
+
+The *event* object also exposes the [*event*.on](#event_on) method.
+
+# event .on (typenames , [listener ]) · [Source](https://github.com/d3/d3-drag/blob/master/src/event.js)
+
+Equivalent to [*drag*.on](#drag_on), but only applies to the current drag gesture. Before the drag gesture starts, a [copy](https://github.com/d3/d3-dispatch#dispatch_copy) of the current drag [event listeners](#drag_on) is made. This copy is bound to the current drag gesture and modified by *event*.on. This is useful for temporary listeners that only receive events for the current drag gesture. For example, this start event listener registers temporary drag and end event listeners as closures:
+
+```js
+function started(event) {
+ const circle = d3.select(this).classed("dragging", true);
+
+ event.on("drag", dragged).on("end", ended);
+
+ function dragged(event, d) {
+ circle.raise().attr("cx", d.x = event.x).attr("cy", d.y = event.y);
+ }
+
+ function ended() {
+ circle.classed("dragging", false);
+ }
+}
+```
diff --git a/node_modules/d3-drag/dist/d3-drag.js b/node_modules/d3-drag/dist/d3-drag.js
new file mode 100644
index 00000000..98cbbb9a
--- /dev/null
+++ b/node_modules/d3-drag/dist/d3-drag.js
@@ -0,0 +1,273 @@
+// https://d3js.org/d3-drag/ v3.0.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-dispatch'), require('d3-selection')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-dispatch', 'd3-selection'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3, global.d3));
+}(this, (function (exports, d3Dispatch, d3Selection) { 'use strict';
+
+// These are typically used in conjunction with noevent to ensure that we can
+// preventDefault on the event.
+const nonpassive = {passive: false};
+const nonpassivecapture = {capture: true, passive: false};
+
+function nopropagation(event) {
+ event.stopImmediatePropagation();
+}
+
+function noevent(event) {
+ event.preventDefault();
+ event.stopImmediatePropagation();
+}
+
+function nodrag(view) {
+ var root = view.document.documentElement,
+ selection = d3Selection.select(view).on("dragstart.drag", noevent, nonpassivecapture);
+ if ("onselectstart" in root) {
+ selection.on("selectstart.drag", noevent, nonpassivecapture);
+ } else {
+ root.__noselect = root.style.MozUserSelect;
+ root.style.MozUserSelect = "none";
+ }
+}
+
+function yesdrag(view, noclick) {
+ var root = view.document.documentElement,
+ selection = d3Selection.select(view).on("dragstart.drag", null);
+ if (noclick) {
+ selection.on("click.drag", noevent, nonpassivecapture);
+ setTimeout(function() { selection.on("click.drag", null); }, 0);
+ }
+ if ("onselectstart" in root) {
+ selection.on("selectstart.drag", null);
+ } else {
+ root.style.MozUserSelect = root.__noselect;
+ delete root.__noselect;
+ }
+}
+
+var constant = x => () => x;
+
+function DragEvent(type, {
+ sourceEvent,
+ subject,
+ target,
+ identifier,
+ active,
+ x, y, dx, dy,
+ dispatch
+}) {
+ Object.defineProperties(this, {
+ type: {value: type, enumerable: true, configurable: true},
+ sourceEvent: {value: sourceEvent, enumerable: true, configurable: true},
+ subject: {value: subject, enumerable: true, configurable: true},
+ target: {value: target, enumerable: true, configurable: true},
+ identifier: {value: identifier, enumerable: true, configurable: true},
+ active: {value: active, enumerable: true, configurable: true},
+ x: {value: x, enumerable: true, configurable: true},
+ y: {value: y, enumerable: true, configurable: true},
+ dx: {value: dx, enumerable: true, configurable: true},
+ dy: {value: dy, enumerable: true, configurable: true},
+ _: {value: dispatch}
+ });
+}
+
+DragEvent.prototype.on = function() {
+ var value = this._.on.apply(this._, arguments);
+ return value === this._ ? this : value;
+};
+
+// Ignore right-click, since that should open the context menu.
+function defaultFilter(event) {
+ return !event.ctrlKey && !event.button;
+}
+
+function defaultContainer() {
+ return this.parentNode;
+}
+
+function defaultSubject(event, d) {
+ return d == null ? {x: event.x, y: event.y} : d;
+}
+
+function defaultTouchable() {
+ return navigator.maxTouchPoints || ("ontouchstart" in this);
+}
+
+function drag() {
+ var filter = defaultFilter,
+ container = defaultContainer,
+ subject = defaultSubject,
+ touchable = defaultTouchable,
+ gestures = {},
+ listeners = d3Dispatch.dispatch("start", "drag", "end"),
+ active = 0,
+ mousedownx,
+ mousedowny,
+ mousemoving,
+ touchending,
+ clickDistance2 = 0;
+
+ function drag(selection) {
+ selection
+ .on("mousedown.drag", mousedowned)
+ .filter(touchable)
+ .on("touchstart.drag", touchstarted)
+ .on("touchmove.drag", touchmoved, nonpassive)
+ .on("touchend.drag touchcancel.drag", touchended)
+ .style("touch-action", "none")
+ .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
+ }
+
+ function mousedowned(event, d) {
+ if (touchending || !filter.call(this, event, d)) return;
+ var gesture = beforestart(this, container.call(this, event, d), event, d, "mouse");
+ if (!gesture) return;
+ d3Selection.select(event.view)
+ .on("mousemove.drag", mousemoved, nonpassivecapture)
+ .on("mouseup.drag", mouseupped, nonpassivecapture);
+ nodrag(event.view);
+ nopropagation(event);
+ mousemoving = false;
+ mousedownx = event.clientX;
+ mousedowny = event.clientY;
+ gesture("start", event);
+ }
+
+ function mousemoved(event) {
+ noevent(event);
+ if (!mousemoving) {
+ var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny;
+ mousemoving = dx * dx + dy * dy > clickDistance2;
+ }
+ gestures.mouse("drag", event);
+ }
+
+ function mouseupped(event) {
+ d3Selection.select(event.view).on("mousemove.drag mouseup.drag", null);
+ yesdrag(event.view, mousemoving);
+ noevent(event);
+ gestures.mouse("end", event);
+ }
+
+ function touchstarted(event, d) {
+ if (!filter.call(this, event, d)) return;
+ var touches = event.changedTouches,
+ c = container.call(this, event, d),
+ n = touches.length, i, gesture;
+
+ for (i = 0; i < n; ++i) {
+ if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) {
+ nopropagation(event);
+ gesture("start", event, touches[i]);
+ }
+ }
+ }
+
+ function touchmoved(event) {
+ var touches = event.changedTouches,
+ n = touches.length, i, gesture;
+
+ for (i = 0; i < n; ++i) {
+ if (gesture = gestures[touches[i].identifier]) {
+ noevent(event);
+ gesture("drag", event, touches[i]);
+ }
+ }
+ }
+
+ function touchended(event) {
+ var touches = event.changedTouches,
+ n = touches.length, i, gesture;
+
+ if (touchending) clearTimeout(touchending);
+ touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
+ for (i = 0; i < n; ++i) {
+ if (gesture = gestures[touches[i].identifier]) {
+ nopropagation(event);
+ gesture("end", event, touches[i]);
+ }
+ }
+ }
+
+ function beforestart(that, container, event, d, identifier, touch) {
+ var dispatch = listeners.copy(),
+ p = d3Selection.pointer(touch || event, container), dx, dy,
+ s;
+
+ if ((s = subject.call(that, new DragEvent("beforestart", {
+ sourceEvent: event,
+ target: drag,
+ identifier,
+ active,
+ x: p[0],
+ y: p[1],
+ dx: 0,
+ dy: 0,
+ dispatch
+ }), d)) == null) return;
+
+ dx = s.x - p[0] || 0;
+ dy = s.y - p[1] || 0;
+
+ return function gesture(type, event, touch) {
+ var p0 = p, n;
+ switch (type) {
+ case "start": gestures[identifier] = gesture, n = active++; break;
+ case "end": delete gestures[identifier], --active; // falls through
+ case "drag": p = d3Selection.pointer(touch || event, container), n = active; break;
+ }
+ dispatch.call(
+ type,
+ that,
+ new DragEvent(type, {
+ sourceEvent: event,
+ subject: s,
+ target: drag,
+ identifier,
+ active: n,
+ x: p[0] + dx,
+ y: p[1] + dy,
+ dx: p[0] - p0[0],
+ dy: p[1] - p0[1],
+ dispatch
+ }),
+ d
+ );
+ };
+ }
+
+ drag.filter = function(_) {
+ return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), drag) : filter;
+ };
+
+ drag.container = function(_) {
+ return arguments.length ? (container = typeof _ === "function" ? _ : constant(_), drag) : container;
+ };
+
+ drag.subject = function(_) {
+ return arguments.length ? (subject = typeof _ === "function" ? _ : constant(_), drag) : subject;
+ };
+
+ drag.touchable = function(_) {
+ return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), drag) : touchable;
+ };
+
+ drag.on = function() {
+ var value = listeners.on.apply(listeners, arguments);
+ return value === listeners ? drag : value;
+ };
+
+ drag.clickDistance = function(_) {
+ return arguments.length ? (clickDistance2 = (_ = +_) * _, drag) : Math.sqrt(clickDistance2);
+ };
+
+ return drag;
+}
+
+exports.drag = drag;
+exports.dragDisable = nodrag;
+exports.dragEnable = yesdrag;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-drag/dist/d3-drag.min.js b/node_modules/d3-drag/dist/d3-drag.min.js
new file mode 100644
index 00000000..1c8bcc30
--- /dev/null
+++ b/node_modules/d3-drag/dist/d3-drag.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-drag/ v3.0.0 Copyright 2010-2021 Mike Bostock
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-dispatch"),require("d3-selection")):"function"==typeof define&&define.amd?define(["exports","d3-dispatch","d3-selection"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).d3=e.d3||{},e.d3,e.d3)}(this,(function(e,t,n){"use strict";const o={passive:!1},r={capture:!0,passive:!1};function i(e){e.stopImmediatePropagation()}function a(e){e.preventDefault(),e.stopImmediatePropagation()}function u(e){var t=e.document.documentElement,o=n.select(e).on("dragstart.drag",a,r);"onselectstart"in t?o.on("selectstart.drag",a,r):(t.__noselect=t.style.MozUserSelect,t.style.MozUserSelect="none")}function c(e,t){var o=e.document.documentElement,i=n.select(e).on("dragstart.drag",null);t&&(i.on("click.drag",a,r),setTimeout((function(){i.on("click.drag",null)}),0)),"onselectstart"in o?i.on("selectstart.drag",null):(o.style.MozUserSelect=o.__noselect,delete o.__noselect)}var l=e=>()=>e;function s(e,{sourceEvent:t,subject:n,target:o,identifier:r,active:i,x:a,y:u,dx:c,dy:l,dispatch:s}){Object.defineProperties(this,{type:{value:e,enumerable:!0,configurable:!0},sourceEvent:{value:t,enumerable:!0,configurable:!0},subject:{value:n,enumerable:!0,configurable:!0},target:{value:o,enumerable:!0,configurable:!0},identifier:{value:r,enumerable:!0,configurable:!0},active:{value:i,enumerable:!0,configurable:!0},x:{value:a,enumerable:!0,configurable:!0},y:{value:u,enumerable:!0,configurable:!0},dx:{value:c,enumerable:!0,configurable:!0},dy:{value:l,enumerable:!0,configurable:!0},_:{value:s}})}function d(e){return!e.ctrlKey&&!e.button}function f(){return this.parentNode}function g(e,t){return null==t?{x:e.x,y:e.y}:t}function h(){return navigator.maxTouchPoints||"ontouchstart"in this}s.prototype.on=function(){var e=this._.on.apply(this._,arguments);return e===this._?this:e},e.drag=function(){var e,v,p,b,m=d,y=f,x=g,_=h,w={},T=t.dispatch("start","drag","end"),j=0,E=0;function k(e){e.on("mousedown.drag",M).filter(_).on("touchstart.drag",z).on("touchmove.drag",D,o).on("touchend.drag touchcancel.drag",S).style("touch-action","none").style("-webkit-tap-highlight-color","rgba(0,0,0,0)")}function M(t,o){if(!b&&m.call(this,t,o)){var a=U(this,y.call(this,t,o),t,o,"mouse");a&&(n.select(t.view).on("mousemove.drag",P,r).on("mouseup.drag",q,r),u(t.view),i(t),p=!1,e=t.clientX,v=t.clientY,a("start",t))}}function P(t){if(a(t),!p){var n=t.clientX-e,o=t.clientY-v;p=n*n+o*o>E}w.mouse("drag",t)}function q(e){n.select(e.view).on("mousemove.drag mouseup.drag",null),c(e.view,p),a(e),w.mouse("end",e)}function z(e,t){if(m.call(this,e,t)){var n,o,r=e.changedTouches,a=y.call(this,e,t),u=r.length;for(n=0;n=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-drag.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-drag/",
+ "jsdelivr": "dist/d3-drag.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "drag",
+ "behavior",
+ "interaction"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-drag",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-drag.git"
+ },
+ "scripts": {
+ "postpublish": "git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c && git push",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-drag.min.js",
+ "version": "3.0.0"
+}
diff --git a/node_modules/d3-drag/src/constant.js b/node_modules/d3-drag/src/constant.js
new file mode 100644
index 00000000..3487c0dd
--- /dev/null
+++ b/node_modules/d3-drag/src/constant.js
@@ -0,0 +1 @@
+export default x => () => x;
diff --git a/node_modules/d3-drag/src/drag.js b/node_modules/d3-drag/src/drag.js
new file mode 100644
index 00000000..790d9c75
--- /dev/null
+++ b/node_modules/d3-drag/src/drag.js
@@ -0,0 +1,194 @@
+import {dispatch} from "d3-dispatch";
+import {select, pointer} from "d3-selection";
+import nodrag, {yesdrag} from "./nodrag.js";
+import noevent, {nonpassive, nonpassivecapture, nopropagation} from "./noevent.js";
+import constant from "./constant.js";
+import DragEvent from "./event.js";
+
+// Ignore right-click, since that should open the context menu.
+function defaultFilter(event) {
+ return !event.ctrlKey && !event.button;
+}
+
+function defaultContainer() {
+ return this.parentNode;
+}
+
+function defaultSubject(event, d) {
+ return d == null ? {x: event.x, y: event.y} : d;
+}
+
+function defaultTouchable() {
+ return navigator.maxTouchPoints || ("ontouchstart" in this);
+}
+
+export default function() {
+ var filter = defaultFilter,
+ container = defaultContainer,
+ subject = defaultSubject,
+ touchable = defaultTouchable,
+ gestures = {},
+ listeners = dispatch("start", "drag", "end"),
+ active = 0,
+ mousedownx,
+ mousedowny,
+ mousemoving,
+ touchending,
+ clickDistance2 = 0;
+
+ function drag(selection) {
+ selection
+ .on("mousedown.drag", mousedowned)
+ .filter(touchable)
+ .on("touchstart.drag", touchstarted)
+ .on("touchmove.drag", touchmoved, nonpassive)
+ .on("touchend.drag touchcancel.drag", touchended)
+ .style("touch-action", "none")
+ .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
+ }
+
+ function mousedowned(event, d) {
+ if (touchending || !filter.call(this, event, d)) return;
+ var gesture = beforestart(this, container.call(this, event, d), event, d, "mouse");
+ if (!gesture) return;
+ select(event.view)
+ .on("mousemove.drag", mousemoved, nonpassivecapture)
+ .on("mouseup.drag", mouseupped, nonpassivecapture);
+ nodrag(event.view);
+ nopropagation(event);
+ mousemoving = false;
+ mousedownx = event.clientX;
+ mousedowny = event.clientY;
+ gesture("start", event);
+ }
+
+ function mousemoved(event) {
+ noevent(event);
+ if (!mousemoving) {
+ var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny;
+ mousemoving = dx * dx + dy * dy > clickDistance2;
+ }
+ gestures.mouse("drag", event);
+ }
+
+ function mouseupped(event) {
+ select(event.view).on("mousemove.drag mouseup.drag", null);
+ yesdrag(event.view, mousemoving);
+ noevent(event);
+ gestures.mouse("end", event);
+ }
+
+ function touchstarted(event, d) {
+ if (!filter.call(this, event, d)) return;
+ var touches = event.changedTouches,
+ c = container.call(this, event, d),
+ n = touches.length, i, gesture;
+
+ for (i = 0; i < n; ++i) {
+ if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) {
+ nopropagation(event);
+ gesture("start", event, touches[i]);
+ }
+ }
+ }
+
+ function touchmoved(event) {
+ var touches = event.changedTouches,
+ n = touches.length, i, gesture;
+
+ for (i = 0; i < n; ++i) {
+ if (gesture = gestures[touches[i].identifier]) {
+ noevent(event);
+ gesture("drag", event, touches[i]);
+ }
+ }
+ }
+
+ function touchended(event) {
+ var touches = event.changedTouches,
+ n = touches.length, i, gesture;
+
+ if (touchending) clearTimeout(touchending);
+ touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
+ for (i = 0; i < n; ++i) {
+ if (gesture = gestures[touches[i].identifier]) {
+ nopropagation(event);
+ gesture("end", event, touches[i]);
+ }
+ }
+ }
+
+ function beforestart(that, container, event, d, identifier, touch) {
+ var dispatch = listeners.copy(),
+ p = pointer(touch || event, container), dx, dy,
+ s;
+
+ if ((s = subject.call(that, new DragEvent("beforestart", {
+ sourceEvent: event,
+ target: drag,
+ identifier,
+ active,
+ x: p[0],
+ y: p[1],
+ dx: 0,
+ dy: 0,
+ dispatch
+ }), d)) == null) return;
+
+ dx = s.x - p[0] || 0;
+ dy = s.y - p[1] || 0;
+
+ return function gesture(type, event, touch) {
+ var p0 = p, n;
+ switch (type) {
+ case "start": gestures[identifier] = gesture, n = active++; break;
+ case "end": delete gestures[identifier], --active; // falls through
+ case "drag": p = pointer(touch || event, container), n = active; break;
+ }
+ dispatch.call(
+ type,
+ that,
+ new DragEvent(type, {
+ sourceEvent: event,
+ subject: s,
+ target: drag,
+ identifier,
+ active: n,
+ x: p[0] + dx,
+ y: p[1] + dy,
+ dx: p[0] - p0[0],
+ dy: p[1] - p0[1],
+ dispatch
+ }),
+ d
+ );
+ };
+ }
+
+ drag.filter = function(_) {
+ return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), drag) : filter;
+ };
+
+ drag.container = function(_) {
+ return arguments.length ? (container = typeof _ === "function" ? _ : constant(_), drag) : container;
+ };
+
+ drag.subject = function(_) {
+ return arguments.length ? (subject = typeof _ === "function" ? _ : constant(_), drag) : subject;
+ };
+
+ drag.touchable = function(_) {
+ return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), drag) : touchable;
+ };
+
+ drag.on = function() {
+ var value = listeners.on.apply(listeners, arguments);
+ return value === listeners ? drag : value;
+ };
+
+ drag.clickDistance = function(_) {
+ return arguments.length ? (clickDistance2 = (_ = +_) * _, drag) : Math.sqrt(clickDistance2);
+ };
+
+ return drag;
+}
diff --git a/node_modules/d3-drag/src/event.js b/node_modules/d3-drag/src/event.js
new file mode 100644
index 00000000..5f246fea
--- /dev/null
+++ b/node_modules/d3-drag/src/event.js
@@ -0,0 +1,28 @@
+export default function DragEvent(type, {
+ sourceEvent,
+ subject,
+ target,
+ identifier,
+ active,
+ x, y, dx, dy,
+ dispatch
+}) {
+ Object.defineProperties(this, {
+ type: {value: type, enumerable: true, configurable: true},
+ sourceEvent: {value: sourceEvent, enumerable: true, configurable: true},
+ subject: {value: subject, enumerable: true, configurable: true},
+ target: {value: target, enumerable: true, configurable: true},
+ identifier: {value: identifier, enumerable: true, configurable: true},
+ active: {value: active, enumerable: true, configurable: true},
+ x: {value: x, enumerable: true, configurable: true},
+ y: {value: y, enumerable: true, configurable: true},
+ dx: {value: dx, enumerable: true, configurable: true},
+ dy: {value: dy, enumerable: true, configurable: true},
+ _: {value: dispatch}
+ });
+}
+
+DragEvent.prototype.on = function() {
+ var value = this._.on.apply(this._, arguments);
+ return value === this._ ? this : value;
+};
diff --git a/node_modules/d3-drag/src/index.js b/node_modules/d3-drag/src/index.js
new file mode 100644
index 00000000..d2dd6019
--- /dev/null
+++ b/node_modules/d3-drag/src/index.js
@@ -0,0 +1,2 @@
+export {default as drag} from "./drag.js";
+export {default as dragDisable, yesdrag as dragEnable} from "./nodrag.js";
diff --git a/node_modules/d3-drag/src/nodrag.js b/node_modules/d3-drag/src/nodrag.js
new file mode 100644
index 00000000..6076694e
--- /dev/null
+++ b/node_modules/d3-drag/src/nodrag.js
@@ -0,0 +1,28 @@
+import {select} from "d3-selection";
+import noevent, {nonpassivecapture} from "./noevent.js";
+
+export default function(view) {
+ var root = view.document.documentElement,
+ selection = select(view).on("dragstart.drag", noevent, nonpassivecapture);
+ if ("onselectstart" in root) {
+ selection.on("selectstart.drag", noevent, nonpassivecapture);
+ } else {
+ root.__noselect = root.style.MozUserSelect;
+ root.style.MozUserSelect = "none";
+ }
+}
+
+export function yesdrag(view, noclick) {
+ var root = view.document.documentElement,
+ selection = select(view).on("dragstart.drag", null);
+ if (noclick) {
+ selection.on("click.drag", noevent, nonpassivecapture);
+ setTimeout(function() { selection.on("click.drag", null); }, 0);
+ }
+ if ("onselectstart" in root) {
+ selection.on("selectstart.drag", null);
+ } else {
+ root.style.MozUserSelect = root.__noselect;
+ delete root.__noselect;
+ }
+}
diff --git a/node_modules/d3-drag/src/noevent.js b/node_modules/d3-drag/src/noevent.js
new file mode 100644
index 00000000..173c250f
--- /dev/null
+++ b/node_modules/d3-drag/src/noevent.js
@@ -0,0 +1,13 @@
+// These are typically used in conjunction with noevent to ensure that we can
+// preventDefault on the event.
+export const nonpassive = {passive: false};
+export const nonpassivecapture = {capture: true, passive: false};
+
+export function nopropagation(event) {
+ event.stopImmediatePropagation();
+}
+
+export default function(event) {
+ event.preventDefault();
+ event.stopImmediatePropagation();
+}
diff --git a/node_modules/d3-dsv/LICENSE b/node_modules/d3-dsv/LICENSE
new file mode 100644
index 00000000..5cb4fc71
--- /dev/null
+++ b/node_modules/d3-dsv/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2013-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-dsv/README.md b/node_modules/d3-dsv/README.md
new file mode 100644
index 00000000..a3732217
--- /dev/null
+++ b/node_modules/d3-dsv/README.md
@@ -0,0 +1,492 @@
+# d3-dsv
+
+This module provides a parser and formatter for delimiter-separated values, most commonly [comma-](https://en.wikipedia.org/wiki/Comma-separated_values) (CSV) or tab-separated values (TSV). These tabular formats are popular with spreadsheet programs such as Microsoft Excel, and are often more space-efficient than JSON. This implementation is based on [RFC 4180](http://tools.ietf.org/html/rfc4180).
+
+Comma (CSV) and tab (TSV) delimiters are built-in. For example, to parse:
+
+```js
+d3.csvParse("foo,bar\n1,2"); // [{foo: "1", bar: "2"}, columns: ["foo", "bar"]]
+d3.tsvParse("foo\tbar\n1\t2"); // [{foo: "1", bar: "2"}, columns: ["foo", "bar"]]
+```
+
+Or to format:
+
+```js
+d3.csvFormat([{foo: "1", bar: "2"}]); // "foo,bar\n1,2"
+d3.tsvFormat([{foo: "1", bar: "2"}]); // "foo\tbar\n1\t2"
+```
+
+To use a different delimiter, such as “|” for pipe-separated values, use [d3.dsvFormat](#dsvFormat):
+
+```js
+const psv = d3.dsvFormat("|");
+
+console.log(psv.parse("foo|bar\n1|2")); // [{foo: "1", bar: "2"}, columns: ["foo", "bar"]]
+```
+
+For easy loading of DSV files in a browser, see [d3-fetch](https://github.com/d3/d3-fetch)’s [d3.csv](https://github.com/d3/d3-fetch/blob/master/README.md#csv), [d3.tsv](https://github.com/d3/d3-fetch/blob/master/README.md#tsv) and [d3.dsv](https://github.com/d3/d3-fetch/blob/master/README.md#dsv) methods.
+
+## Installing
+
+If you use npm, `npm install d3-dsv`. You can also download the [latest release on GitHub](https://github.com/d3/d3-dsv/releases/latest). For vanilla HTML in modern browsers, import d3-dsv from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-dsv’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+# d3.csvParse (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[parse](#dsv_parse). Note: requires unsafe-eval [content security policy](#content-security-policy).
+
+# d3.csvParseRows (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[parseRows](#dsv_parseRows).
+
+# d3.csvFormat (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[format](#dsv_format).
+
+# d3.csvFormatBody (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[formatBody](#dsv_formatBody).
+
+# d3.csvFormatRows (rows ) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[formatRows](#dsv_formatRows).
+
+# d3.csvFormatRow (row ) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[formatRow](#dsv_formatRow).
+
+# d3.csvFormatValue (value ) [<>](https://github.com/d3/d3-dsv/blob/master/src/csv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)(",").[formatValue](#dsv_formatValue).
+
+# d3.tsvParse (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[parse](#dsv_parse). Note: requires unsafe-eval [content security policy](#content-security-policy).
+
+# d3.tsvParseRows (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[parseRows](#dsv_parseRows).
+
+# d3.tsvFormat (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[format](#dsv_format).
+
+# d3.tsvFormatBody (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[formatBody](#dsv_formatBody).
+
+# d3.tsvFormatRows (rows ) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[formatRows](#dsv_formatRows).
+
+# d3.tsvFormatRow (row ) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[formatRow](#dsv_formatRow).
+
+# d3.tsvFormatValue (value ) [<>](https://github.com/d3/d3-dsv/blob/master/src/tsv.js "Source")
+
+Equivalent to [dsvFormat](#dsvFormat)("\t").[formatValue](#dsv_formatValue).
+
+# d3.dsvFormat (delimiter ) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js)
+
+Constructs a new DSV parser and formatter for the specified *delimiter*. The *delimiter* must be a single character (*i.e.*, a single 16-bit code unit); so, ASCII delimiters are fine, but emoji delimiters are not.
+
+# *dsv*.parse (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Parses the specified *string*, which must be in the delimiter-separated values format with the appropriate delimiter, returning an array of objects representing the parsed rows.
+
+Unlike [*dsv*.parseRows](#dsv_parseRows), this method requires that the first line of the DSV content contains a delimiter-separated list of column names; these column names become the attributes on the returned objects. For example, consider the following CSV file:
+
+```
+Year,Make,Model,Length
+1997,Ford,E350,2.34
+2000,Mercury,Cougar,2.38
+```
+
+The resulting JavaScript array is:
+
+```js
+[
+ {"Year": "1997", "Make": "Ford", "Model": "E350", "Length": "2.34"},
+ {"Year": "2000", "Make": "Mercury", "Model": "Cougar", "Length": "2.38"}
+]
+```
+
+The returned array also exposes a `columns` property containing the column names in input order (in contrast to Object.keys, whose iteration order is arbitrary). For example:
+
+```js
+data.columns; // ["Year", "Make", "Model", "Length"]
+```
+
+If the column names are not unique, only the last value is returned for each name; to access all values, use [*dsv*.parseRows](#dsv_parseRows) instead (see [example](https://observablehq.com/@d3/parse-csv-with-duplicate-column-names)).
+
+If a *row* conversion function is not specified, field values are strings. For safety, there is no automatic conversion to numbers, dates, or other types. In some cases, JavaScript may coerce strings to numbers for you automatically (for example, using the `+` operator), but better is to specify a *row* conversion function. See [d3.autoType](#autoType) for a convenient *row* conversion function that infers and coerces common types like numbers and strings.
+
+If a *row* conversion function is specified, the specified function is invoked for each row, being passed an object representing the current row (`d`), the index (`i`) starting at zero for the first non-header row, and the array of column names. If the returned value is null or undefined, the row is skipped and will be omitted from the array returned by *dsv*.parse; otherwise, the returned value defines the corresponding row object. For example:
+
+```js
+const data = d3.csvParse(string, (d) => {
+ return {
+ year: new Date(+d.Year, 0, 1), // lowercase and convert "Year" to Date
+ make: d.Make, // lowercase
+ model: d.Model, // lowercase
+ length: +d.Length // lowercase and convert "Length" to number
+ };
+});
+```
+
+Note: using `+` rather than [parseInt](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseInt) or [parseFloat](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/parseFloat) is typically faster, though more restrictive. For example, `"30px"` when coerced using `+` returns `NaN`, while parseInt and parseFloat return `30`.
+
+Note: requires unsafe-eval [content security policy](#content-security-policy).
+
+# dsv .parseRows (string [, row ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Parses the specified *string*, which must be in the delimiter-separated values format with the appropriate delimiter, returning an array of arrays representing the parsed rows.
+
+Unlike [*dsv*.parse](#dsv_parse), this method treats the header line as a standard row, and should be used whenever DSV content does not contain a header. Each row is represented as an array rather than an object. Rows may have variable length. For example, consider the following CSV file, which notably lacks a header line:
+
+```
+1997,Ford,E350,2.34
+2000,Mercury,Cougar,2.38
+```
+
+The resulting JavaScript array is:
+
+```js
+[
+ ["1997", "Ford", "E350", "2.34"],
+ ["2000", "Mercury", "Cougar", "2.38"]
+]
+```
+
+If a *row* conversion function is not specified, field values are strings. For safety, there is no automatic conversion to numbers, dates, or other types. In some cases, JavaScript may coerce strings to numbers for you automatically (for example, using the `+` operator), but better is to specify a *row* conversion function. See [d3.autoType](#autoType) for a convenient *row* conversion function that infers and coerces common types like numbers and strings.
+
+If a *row* conversion function is specified, the specified function is invoked for each row, being passed an array representing the current row (`d`), the index (`i`) starting at zero for the first row, and the array of column names. If the returned value is null or undefined, the row is skipped and will be omitted from the array returned by *dsv*.parse; otherwise, the returned value defines the corresponding row object. For example:
+
+```js
+const data = d3.csvParseRows(string, (d, i) => {
+ return {
+ year: new Date(+d[0], 0, 1), // convert first colum column to Date
+ make: d[1],
+ model: d[2],
+ length: +d[3] // convert fourth column to number
+ };
+});
+```
+
+In effect, *row* is similar to applying a [map](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/map) and [filter](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/filter) operator to the returned rows.
+
+# dsv .format (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Formats the specified array of object *rows* as delimiter-separated values, returning a string. This operation is the inverse of [*dsv*.parse](#dsv_parse). Each row will be separated by a newline (`\n`), and each column within each row will be separated by the delimiter (such as a comma, `,`). Values that contain either the delimiter, a double-quote (`"`) or a newline will be escaped using double-quotes.
+
+If *columns* is not specified, the list of column names that forms the header row is determined by the union of all properties on all objects in *rows*; the order of columns is nondeterministic. If *columns* is specified, it is an array of strings representing the column names. For example:
+
+```js
+const string = d3.csvFormat(data, ["year", "make", "model", "length"]);
+```
+
+All fields on each row object will be coerced to strings. If the field value is null or undefined, the empty string is used. If the field value is a Date, the [ECMAScript date-time string format](https://www.ecma-international.org/ecma-262/9.0/index.html#sec-date-time-string-format) (a subset of ISO 8601) is used: for example, dates at UTC midnight are formatted as `YYYY-MM-DD`. For more control over which and how fields are formatted, first map *rows* to an array of array of string, and then use [*dsv*.formatRows](#dsv_formatRows).
+
+# dsv .formatBody (rows [, columns ]) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Equivalent to [*dsv*.format](#dsv_format), but omits the header row. This is useful, for example, when appending rows to an existing file.
+
+# dsv .formatRows (rows ) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Formats the specified array of array of string *rows* as delimiter-separated values, returning a string. This operation is the reverse of [*dsv*.parseRows](#dsv_parseRows). Each row will be separated by a newline (`\n`), and each column within each row will be separated by the delimiter (such as a comma, `,`). Values that contain either the delimiter, a double-quote (") or a newline will be escaped using double-quotes.
+
+To convert an array of objects to an array of arrays while explicitly specifying the columns, use [*array*.map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map). For example:
+
+```js
+const string = d3.csvFormatRows(data.map((d, i) => {
+ return [
+ d.year.getFullYear(), // Assuming d.year is a Date object.
+ d.make,
+ d.model,
+ d.length
+ ];
+}));
+```
+
+If you like, you can also [*array*.concat](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat) this result with an array of column names to generate the first row:
+
+```js
+const string = d3.csvFormatRows([[
+ "year",
+ "make",
+ "model",
+ "length"
+ ]].concat(data.map((d, i) => {
+ return [
+ d.year.getFullYear(), // Assuming d.year is a Date object.
+ d.make,
+ d.model,
+ d.length
+ ];
+})));
+```
+
+# dsv .formatRow (row ) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Formats a single array *row* of strings as delimiter-separated values, returning a string. Each column within the row will be separated by the delimiter (such as a comma, `,`). Values that contain either the delimiter, a double-quote (") or a newline will be escaped using double-quotes.
+
+# dsv .formatValue (value ) [<>](https://github.com/d3/d3-dsv/blob/master/src/dsv.js "Source")
+
+Format a single *value* or string as a delimiter-separated value, returning a string. A value that contains either the delimiter, a double-quote (") or a newline will be escaped using double-quotes.
+
+# d3.autoType (object ) [<>](https://github.com/d3/d3-dsv/blob/master/src/autoType.js "Source")
+
+Given an *object* (or array) representing a parsed row, infers the types of values on the *object* and coerces them accordingly, returning the mutated *object*. This function is intended to be used as a *row* accessor function in conjunction with [*dsv*.parse](#dsv_parse) and [*dsv*.parseRows](#dsv_parseRow). For example, consider the following CSV file:
+
+```
+Year,Make,Model,Length
+1997,Ford,E350,2.34
+2000,Mercury,Cougar,2.38
+```
+
+When used with [d3.csvParse](#csvParse),
+
+```js
+d3.csvParse(string, d3.autoType)
+```
+
+the resulting JavaScript array is:
+
+```js
+[
+ {"Year": 1997, "Make": "Ford", "Model": "E350", "Length": 2.34},
+ {"Year": 2000, "Make": "Mercury", "Model": "Cougar", "Length": 2.38}
+]
+```
+
+Type inference works as follows. For each *value* in the given *object*, the [trimmed](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim) value is computed; the value is then re-assigned as follows:
+
+1. If empty, then `null`.
+1. If exactly `"true"`, then `true`.
+1. If exactly `"false"`, then `false`.
+1. If exactly `"NaN"`, then `NaN`.
+1. Otherwise, if [coercible to a number](https://www.ecma-international.org/ecma-262/9.0/index.html#sec-tonumber-applied-to-the-string-type), then a number.
+1. Otherwise, if a [date-only or date-time string](https://www.ecma-international.org/ecma-262/9.0/index.html#sec-date-time-string-format), then a Date.
+1. Otherwise, a string (the original untrimmed value).
+
+Values with leading zeroes may be coerced to numbers; for example `"08904"` coerces to `8904`. However, extra characters such as commas or units (*e.g.*, `"$1.00"`, `"(123)"`, `"1,234"` or `"32px"`) will prevent number coercion, resulting in a string.
+
+Date strings must be in ECMAScript’s subset of the [ISO 8601 format](https://en.wikipedia.org/wiki/ISO_8601). When a date-only string such as YYYY-MM-DD is specified, the inferred time is midnight UTC; however, if a date-time string such as YYYY-MM-DDTHH:MM is specified without a time zone, it is assumed to be local time.
+
+Automatic type inference is primarily intended to provide safe, predictable behavior in conjunction with [*dsv*.format](#dsv_format) and [*dsv*.formatRows](#dsv_formatRows) for common JavaScript types. If you need different behavior, you should implement your own row accessor function.
+
+For more, see [the d3.autoType notebook](https://observablehq.com/@d3/d3-autotype).
+
+### Content Security Policy
+
+If a [content security policy](http://www.w3.org/TR/CSP/) is in place, note that [*dsv*.parse](#dsv_parse) requires `unsafe-eval` in the `script-src` directive, due to the (safe) use of dynamic code generation for fast parsing. (See [source](https://github.com/d3/d3-dsv/blob/master/src/dsv.js).) Alternatively, use [*dsv*.parseRows](#dsv_parseRows).
+
+### Byte-Order Marks
+
+DSV files sometimes begin with a [byte order mark (BOM)](https://en.wikipedia.org/wiki/Byte_order_mark); saving a spreadsheet in CSV UTF-8 format from Microsoft Excel, for example, will include a BOM. On the web this is not usually a problem because the [UTF-8 decode algorithm](https://encoding.spec.whatwg.org/#utf-8-decode) specified in the Encoding standard removes the BOM. Node.js, on the other hand, [does not remove the BOM](https://github.com/nodejs/node-v0.x-archive/issues/1918) when decoding UTF-8.
+
+If the BOM is not removed, the first character of the text is a zero-width non-breaking space. So if a CSV file with a BOM is parsed by [d3.csvParse](#csvParse), the first column’s name will begin with a zero-width non-breaking space. This can be hard to spot since this character is usually invisible when printed.
+
+To remove the BOM before parsing, consider using [strip-bom](https://www.npmjs.com/package/strip-bom).
+
+## Command Line Reference
+
+### dsv2dsv
+
+# dsv2dsv [options… ] [file ]
+
+Converts the specified DSV input *file* to DSV (typically with a different delimiter or encoding). If *file* is not specified, defaults to reading from stdin. For example, to convert to CSV to TSV:
+
+```
+csv2tsv < example.csv > example.tsv
+```
+
+To convert windows-1252 CSV to utf-8 CSV:
+
+```
+dsv2dsv --input-encoding windows-1252 < latin1.csv > utf8.csv
+```
+
+# dsv2dsv -h
+# dsv2dsv --help
+
+Output usage information.
+
+# dsv2dsv -V
+# dsv2dsv --version
+
+Output the version number.
+
+# dsv2dsv -o file
+# dsv2dsv --out file
+
+Specify the output file name. Defaults to “-” for stdout.
+
+# dsv2dsv -r delimiter
+# dsv2dsv --input-delimiter delimiter
+
+Specify the input delimiter character. Defaults to “,” for reading CSV. (You can enter a tab on the command line by typing ⌃V.)
+
+# dsv2dsv --input-encoding encoding
+
+Specify the input character encoding. Defaults to “utf8”.
+
+# dsv2dsv -w delimiter
+# dsv2dsv --output-delimiter delimiter
+
+Specify the output delimiter character. Defaults to “,” for writing CSV. (You can enter a tab on the command line by typing ⌃V.)
+
+# dsv2dsv --output-encoding encoding
+
+Specify the output character encoding. Defaults to “utf8”.
+
+# csv2tsv [options… ] [file ]
+
+Equivalent to [dsv2dsv](#dsv2dsv), but the [output delimiter](#dsv2dsv_output_delimiter) defaults to the tab character (\t).
+
+# tsv2csv [options… ] [file ]
+
+Equivalent to [dsv2dsv](#dsv2dsv), but the [input delimiter](#dsv2dsv_output_delimiter) defaults to the tab character (\t).
+
+### dsv2json
+
+# dsv2json [options… ] [file ]
+
+Converts the specified DSV input *file* to JSON. If *file* is not specified, defaults to reading from stdin. For example, to convert to CSV to JSON:
+
+```
+csv2json < example.csv > example.json
+```
+
+Or to convert CSV to a newline-delimited JSON stream:
+
+```
+csv2json -n < example.csv > example.ndjson
+```
+
+# dsv2json -h
+# dsv2json --help
+
+Output usage information.
+
+# dsv2json -V
+# dsv2json --version
+
+Output the version number.
+
+# dsv2json -o file
+# dsv2json --out file
+
+Specify the output file name. Defaults to “-” for stdout.
+
+# dsv2json -a
+# dsv2json --auto-type
+
+Use type inference when parsing rows. See d3.autoType for how it works.
+
+# dsv2json -r delimiter
+# dsv2json --input-delimiter delimiter
+
+Specify the input delimiter character. Defaults to “,” for reading CSV. (You can enter a tab on the command line by typing ⌃V.)
+
+# dsv2json --input-encoding encoding
+
+Specify the input character encoding. Defaults to “utf8”.
+
+# dsv2json -r encoding
+# dsv2json --output-encoding encoding
+
+Specify the output character encoding. Defaults to “utf8”.
+
+# dsv2json -n
+# dsv2json --newline-delimited
+
+Output [newline-delimited JSON](https://github.com/mbostock/ndjson-cli) instead of a single JSON array.
+
+# csv2json [options… ] [file ]
+
+Equivalent to [dsv2json](#dsv2json).
+
+# tsv2json [options… ] [file ]
+
+Equivalent to [dsv2json](#dsv2json), but the [input delimiter](#dsv2json_input_delimiter) defaults to the tab character (\t).
+
+### json2dsv
+
+# json2dsv [options… ] [file ]
+
+Converts the specified JSON input *file* to DSV. If *file* is not specified, defaults to reading from stdin. For example, to convert to JSON to CSV:
+
+```
+json2csv < example.json > example.csv
+```
+
+Or to convert a newline-delimited JSON stream to CSV:
+
+```
+json2csv -n < example.ndjson > example.csv
+```
+
+# json2dsv -h
+# json2dsv --help
+
+Output usage information.
+
+# json2dsv -V
+# json2dsv --version
+
+Output the version number.
+
+# json2dsv -o file
+# json2dsv --out file
+
+Specify the output file name. Defaults to “-” for stdout.
+
+# json2dsv --input-encoding encoding
+
+Specify the input character encoding. Defaults to “utf8”.
+
+# json2dsv -w delimiter
+# json2dsv --output-delimiter delimiter
+
+Specify the output delimiter character. Defaults to “,” for writing CSV. (You can enter a tab on the command line by typing ⌃V.)
+
+# json2dsv --output-encoding encoding
+
+Specify the output character encoding. Defaults to “utf8”.
+
+# json2dsv -n
+# json2dsv --newline-delimited
+
+Read [newline-delimited JSON](https://github.com/mbostock/ndjson-cli) instead of a single JSON array.
+
+# json2csv [options… ] [file ]
+
+Equivalent to [json2dsv](#json2dsv).
+
+# json2tsv [options… ] [file ]
+
+Equivalent to [json2dsv](#json2dsv), but the [output delimiter](#json2dsv_output_delimiter) defaults to the tab character (\t).
diff --git a/node_modules/d3-dsv/bin/dsv2dsv.js b/node_modules/d3-dsv/bin/dsv2dsv.js
new file mode 100644
index 00000000..0dd38ba1
--- /dev/null
+++ b/node_modules/d3-dsv/bin/dsv2dsv.js
@@ -0,0 +1,35 @@
+#!/usr/bin/env node
+
+import {EOL} from "os";
+import {basename, dirname, resolve} from "path";
+import {readFileSync} from "fs";
+import {fileURLToPath} from "url";
+import rw from "rw";
+import {program} from "commander";
+import iconv from "iconv-lite";
+import {dsvFormat} from "../src/index.js";
+
+const progname = basename(process.argv[1]);
+const defaultInDelimiter = progname.slice(0, 3) === "tsv" ? "\t" : ",";
+const defaultOutDelimiter = progname.slice(-3) === "tsv" ? "\t" : ",";
+
+const options = program
+ .version(JSON.parse(readFileSync(resolve(dirname(fileURLToPath(import.meta.url)), "../package.json"))).version)
+ .usage("[options] [file]")
+ .option("-o, --out ", "output file name; defaults to “-” for stdout", "-")
+ .option("-r, --input-delimiter ", "input delimiter character", defaultInDelimiter)
+ .option("-w, --output-delimiter ", "output delimiter character", defaultOutDelimiter)
+ .option("--input-encoding ", "input character encoding; defaults to “utf8”", "utf8")
+ .option("--output-encoding ", "output character encoding; defaults to “utf8”", "utf8")
+ .parse(process.argv)
+ .opts();
+
+const inFormat = dsvFormat(options.inputDelimiter);
+const outFormat = dsvFormat(options.outputDelimiter);
+
+rw.dash.readFile(program.args[0] || "-", (error, text) => {
+ if (error) throw error;
+ rw.dash.writeFile("-", iconv.encode(outFormat.format(inFormat.parse(iconv.decode(text, options.inputEncoding))) + EOL, options.outputEncoding), (error) => {
+ if (error) throw error;
+ });
+});
diff --git a/node_modules/d3-dsv/bin/dsv2json.js b/node_modules/d3-dsv/bin/dsv2json.js
new file mode 100644
index 00000000..c2a447f8
--- /dev/null
+++ b/node_modules/d3-dsv/bin/dsv2json.js
@@ -0,0 +1,38 @@
+#!/usr/bin/env node
+
+import {EOL} from "os";
+import {basename, dirname, resolve} from "path";
+import {readFileSync} from "fs";
+import {fileURLToPath} from "url";
+import rw from "rw";
+import {program} from "commander";
+import iconv from "iconv-lite";
+import {dsvFormat} from "../src/index.js";
+
+const progname = basename(process.argv[1]);
+const defaultInDelimiter = progname.slice(0, 3) === "tsv" ? "\t" : ",";
+
+const options = program
+ .version(JSON.parse(readFileSync(resolve(dirname(fileURLToPath(import.meta.url)), "../package.json"))).version)
+ .usage("[options] [file]")
+ .option("-o, --out ", "output file name; defaults to “-” for stdout", "-")
+ .option("-r, --input-delimiter ", "input delimiter character", defaultInDelimiter)
+ .option("-a, --auto-type", "parse rows with type inference (see d3.autoType)")
+ .option("-n, --newline-delimited", "output newline-delimited JSON")
+ .option("--input-encoding ", "input character encoding; defaults to “utf8”", "utf8")
+ .option("--output-encoding ", "output character encoding; defaults to “utf8”", "utf8")
+ .parse(process.argv)
+ .opts();
+
+const inFormat = dsvFormat(options.inputDelimiter);
+
+rw.dash.readFile(program.args[0] || "-", (error, text) => {
+ if (error) throw error;
+ const rowConverter = options.autoType ? dsv.autoType : null
+ const rows = inFormat.parse(iconv.decode(text, options.inputEncoding), rowConverter);
+ rw.dash.writeFile(options.out, iconv.encode(options.newlineDelimited
+ ? rows.map((row) => JSON.stringify(row)).join("\n") + "\n"
+ : JSON.stringify(rows) + EOL, options.outputEncoding), (error) => {
+ if (error) throw error;
+ });
+});
diff --git a/node_modules/d3-dsv/bin/json2dsv.js b/node_modules/d3-dsv/bin/json2dsv.js
new file mode 100644
index 00000000..75606b82
--- /dev/null
+++ b/node_modules/d3-dsv/bin/json2dsv.js
@@ -0,0 +1,36 @@
+#!/usr/bin/env node
+
+import {EOL} from "os";
+import {basename, dirname, resolve} from "path";
+import {readFileSync} from "fs";
+import {fileURLToPath} from "url";
+import rw from "rw";
+import {program} from "commander";
+import iconv from "iconv-lite";
+import {dsvFormat} from "../src/index.js";
+
+const progname = basename(process.argv[1]);
+const defaultOutDelimiter = progname.slice(-3) === "tsv" ? "\t" : ",";
+
+const options = program
+ .version(JSON.parse(readFileSync(resolve(dirname(fileURLToPath(import.meta.url)), "../package.json"))).version)
+ .usage("[options] [file]")
+ .option("-o, --out ", "output file name; defaults to “-” for stdout", "-")
+ .option("-w, --output-delimiter ", "output delimiter character", defaultOutDelimiter)
+ .option("-n, --newline-delimited", "accept newline-delimited JSON")
+ .option("--input-encoding ", "input character encoding; defaults to “utf8”", "utf8")
+ .option("--output-encoding ", "output character encoding; defaults to “utf8”", "utf8")
+ .parse(process.argv)
+ .opts();
+
+const outFormat = dsvFormat(options.outputDelimiter);
+
+rw.dash.readFile(program.args[0] || "-", (error, text) => {
+ if (error) throw error;
+ text = iconv.decode(text, options.inputEncoding);
+ rw.dash.writeFile(options.out, iconv.encode(outFormat.format(options.newlineDelimited
+ ? text.trim().split(/\r?\n/g).map((line) => JSON.parse(line))
+ : JSON.parse(text)) + EOL, options.outputEncoding), (error) => {
+ if (error) throw error;
+ });
+});
diff --git a/node_modules/d3-dsv/dist/d3-dsv.js b/node_modules/d3-dsv/dist/d3-dsv.js
new file mode 100644
index 00000000..2b58579f
--- /dev/null
+++ b/node_modules/d3-dsv/dist/d3-dsv.js
@@ -0,0 +1,233 @@
+// https://d3js.org/d3-dsv/ v3.0.1 Copyright 2013-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+var EOL = {},
+ EOF = {},
+ QUOTE = 34,
+ NEWLINE = 10,
+ RETURN = 13;
+
+function objectConverter(columns) {
+ return new Function("d", "return {" + columns.map(function(name, i) {
+ return JSON.stringify(name) + ": d[" + i + "] || \"\"";
+ }).join(",") + "}");
+}
+
+function customConverter(columns, f) {
+ var object = objectConverter(columns);
+ return function(row, i) {
+ return f(object(row), i, columns);
+ };
+}
+
+// Compute unique columns in order of discovery.
+function inferColumns(rows) {
+ var columnSet = Object.create(null),
+ columns = [];
+
+ rows.forEach(function(row) {
+ for (var column in row) {
+ if (!(column in columnSet)) {
+ columns.push(columnSet[column] = column);
+ }
+ }
+ });
+
+ return columns;
+}
+
+function pad(value, width) {
+ var s = value + "", length = s.length;
+ return length < width ? new Array(width - length + 1).join(0) + s : s;
+}
+
+function formatYear(year) {
+ return year < 0 ? "-" + pad(-year, 6)
+ : year > 9999 ? "+" + pad(year, 6)
+ : pad(year, 4);
+}
+
+function formatDate(date) {
+ var hours = date.getUTCHours(),
+ minutes = date.getUTCMinutes(),
+ seconds = date.getUTCSeconds(),
+ milliseconds = date.getUTCMilliseconds();
+ return isNaN(date) ? "Invalid Date"
+ : formatYear(date.getUTCFullYear()) + "-" + pad(date.getUTCMonth() + 1, 2) + "-" + pad(date.getUTCDate(), 2)
+ + (milliseconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "." + pad(milliseconds, 3) + "Z"
+ : seconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "Z"
+ : minutes || hours ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + "Z"
+ : "");
+}
+
+function dsv(delimiter) {
+ var reFormat = new RegExp("[\"" + delimiter + "\n\r]"),
+ DELIMITER = delimiter.charCodeAt(0);
+
+ function parse(text, f) {
+ var convert, columns, rows = parseRows(text, function(row, i) {
+ if (convert) return convert(row, i - 1);
+ columns = row, convert = f ? customConverter(row, f) : objectConverter(row);
+ });
+ rows.columns = columns || [];
+ return rows;
+ }
+
+ function parseRows(text, f) {
+ var rows = [], // output rows
+ N = text.length,
+ I = 0, // current character index
+ n = 0, // current line number
+ t, // current token
+ eof = N <= 0, // current token followed by EOF?
+ eol = false; // current token followed by EOL?
+
+ // Strip the trailing newline.
+ if (text.charCodeAt(N - 1) === NEWLINE) --N;
+ if (text.charCodeAt(N - 1) === RETURN) --N;
+
+ function token() {
+ if (eof) return EOF;
+ if (eol) return eol = false, EOL;
+
+ // Unescape quotes.
+ var i, j = I, c;
+ if (text.charCodeAt(j) === QUOTE) {
+ while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE);
+ if ((i = I) >= N) eof = true;
+ else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true;
+ else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; }
+ return text.slice(j + 1, i - 1).replace(/""/g, "\"");
+ }
+
+ // Find next delimiter or newline.
+ while (I < N) {
+ if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true;
+ else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; }
+ else if (c !== DELIMITER) continue;
+ return text.slice(j, i);
+ }
+
+ // Return last token before EOF.
+ return eof = true, text.slice(j, N);
+ }
+
+ while ((t = token()) !== EOF) {
+ var row = [];
+ while (t !== EOL && t !== EOF) row.push(t), t = token();
+ if (f && (row = f(row, n++)) == null) continue;
+ rows.push(row);
+ }
+
+ return rows;
+ }
+
+ function preformatBody(rows, columns) {
+ return rows.map(function(row) {
+ return columns.map(function(column) {
+ return formatValue(row[column]);
+ }).join(delimiter);
+ });
+ }
+
+ function format(rows, columns) {
+ if (columns == null) columns = inferColumns(rows);
+ return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n");
+ }
+
+ function formatBody(rows, columns) {
+ if (columns == null) columns = inferColumns(rows);
+ return preformatBody(rows, columns).join("\n");
+ }
+
+ function formatRows(rows) {
+ return rows.map(formatRow).join("\n");
+ }
+
+ function formatRow(row) {
+ return row.map(formatValue).join(delimiter);
+ }
+
+ function formatValue(value) {
+ return value == null ? ""
+ : value instanceof Date ? formatDate(value)
+ : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\""
+ : value;
+ }
+
+ return {
+ parse: parse,
+ parseRows: parseRows,
+ format: format,
+ formatBody: formatBody,
+ formatRows: formatRows,
+ formatRow: formatRow,
+ formatValue: formatValue
+ };
+}
+
+var csv = dsv(",");
+
+var csvParse = csv.parse;
+var csvParseRows = csv.parseRows;
+var csvFormat = csv.format;
+var csvFormatBody = csv.formatBody;
+var csvFormatRows = csv.formatRows;
+var csvFormatRow = csv.formatRow;
+var csvFormatValue = csv.formatValue;
+
+var tsv = dsv("\t");
+
+var tsvParse = tsv.parse;
+var tsvParseRows = tsv.parseRows;
+var tsvFormat = tsv.format;
+var tsvFormatBody = tsv.formatBody;
+var tsvFormatRows = tsv.formatRows;
+var tsvFormatRow = tsv.formatRow;
+var tsvFormatValue = tsv.formatValue;
+
+function autoType(object) {
+ for (var key in object) {
+ var value = object[key].trim(), number, m;
+ if (!value) value = null;
+ else if (value === "true") value = true;
+ else if (value === "false") value = false;
+ else if (value === "NaN") value = NaN;
+ else if (!isNaN(number = +value)) value = number;
+ else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) {
+ if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " ");
+ value = new Date(value);
+ }
+ else continue;
+ object[key] = value;
+ }
+ return object;
+}
+
+// https://github.com/d3/d3-dsv/issues/45
+const fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours();
+
+exports.autoType = autoType;
+exports.csvFormat = csvFormat;
+exports.csvFormatBody = csvFormatBody;
+exports.csvFormatRow = csvFormatRow;
+exports.csvFormatRows = csvFormatRows;
+exports.csvFormatValue = csvFormatValue;
+exports.csvParse = csvParse;
+exports.csvParseRows = csvParseRows;
+exports.dsvFormat = dsv;
+exports.tsvFormat = tsvFormat;
+exports.tsvFormatBody = tsvFormatBody;
+exports.tsvFormatRow = tsvFormatRow;
+exports.tsvFormatRows = tsvFormatRows;
+exports.tsvFormatValue = tsvFormatValue;
+exports.tsvParse = tsvParse;
+exports.tsvParseRows = tsvParseRows;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-dsv/dist/d3-dsv.min.js b/node_modules/d3-dsv/dist/d3-dsv.min.js
new file mode 100644
index 00000000..eb8de3b4
--- /dev/null
+++ b/node_modules/d3-dsv/dist/d3-dsv.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-dsv/ v3.0.1 Copyright 2013-2021 Mike Bostock
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).d3=e.d3||{})}(this,(function(e){"use strict";var t={},r={};function n(e){return new Function("d","return {"+e.map((function(e,t){return JSON.stringify(e)+": d["+t+'] || ""'})).join(",")+"}")}function o(e){var t=Object.create(null),r=[];return e.forEach((function(e){for(var n in e)n in t||r.push(t[n]=n)})),r}function a(e,t){var r=e+"",n=r.length;return n9999?"+"+a(t,6):a(t,4))+"-"+a(e.getUTCMonth()+1,2)+"-"+a(e.getUTCDate(),2)+(u?"T"+a(r,2)+":"+a(n,2)+":"+a(o,2)+"."+a(u,3)+"Z":o?"T"+a(r,2)+":"+a(n,2)+":"+a(o,2)+"Z":n||r?"T"+a(r,2)+":"+a(n,2)+"Z":"")}function i(e){var a=new RegExp('["'+e+"\n\r]"),i=e.charCodeAt(0);function f(e,n){var o,a=[],u=e.length,f=0,s=0,c=u<=0,l=!1;function d(){if(c)return r;if(l)return l=!1,t;var n,o,a=f;if(34===e.charCodeAt(a)){for(;f++=u?c=!0:10===(o=e.charCodeAt(f++))?l=!0:13===o&&(l=!0,10===e.charCodeAt(f)&&++f),e.slice(a+1,n-1).replace(/""/g,'"')}for(;f
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/.idea/codeStyles/codeStyleConfig.xml b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/codeStyles/codeStyleConfig.xml
new file mode 100644
index 00000000..79ee123c
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/codeStyles/codeStyleConfig.xml
@@ -0,0 +1,5 @@
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/.idea/iconv-lite.iml b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/iconv-lite.iml
new file mode 100644
index 00000000..0c8867d7
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/iconv-lite.iml
@@ -0,0 +1,12 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/.idea/inspectionProfiles/Project_Default.xml b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 00000000..03d9549e
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,6 @@
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/.idea/modules.xml b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/modules.xml
new file mode 100644
index 00000000..5d24f2e1
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/.idea/vcs.xml b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/vcs.xml
new file mode 100644
index 00000000..94a25f7f
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/Changelog.md b/node_modules/d3-dsv/node_modules/iconv-lite/Changelog.md
new file mode 100644
index 00000000..464549b1
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/Changelog.md
@@ -0,0 +1,212 @@
+## 0.6.3 / 2021-05-23
+ * Fix HKSCS encoding to prefer Big5 codes if both Big5 and HKSCS codes are possible (#264)
+
+
+## 0.6.2 / 2020-07-08
+ * Support Uint8Array-s decoding without conversion to Buffers, plus fix an edge case.
+
+
+## 0.6.1 / 2020-06-28
+ * Support Uint8Array-s directly when decoding (#246, by @gyzerok)
+ * Unify package.json version ranges to be strictly semver-compatible (#241)
+ * Fix minor issue in UTF-32 decoder's endianness detection code.
+
+
+## 0.6.0 / 2020-06-08
+ * Updated 'gb18030' encoding to :2005 edition (see https://github.com/whatwg/encoding/issues/22).
+ * Removed `iconv.extendNodeEncodings()` mechanism. It was deprecated 5 years ago and didn't work
+ in recent Node versions.
+ * Reworked Streaming API behavior in browser environments to fix #204. Streaming API will be
+ excluded by default in browser packs, saving ~100Kb bundle size, unless enabled explicitly using
+ `iconv.enableStreamingAPI(require('stream'))`.
+ * Updates to development environment & tests:
+ * Added ./test/webpack private package to test complex new use cases that need custom environment.
+ It's tested as a separate job in Travis CI.
+ * Updated generation code for the new EUC-KR index file format from Encoding Standard.
+ * Removed Buffer() constructor in tests (#197 by @gabrielschulhof).
+
+
+## 0.5.2 / 2020-06-08
+ * Added `iconv.getEncoder()` and `iconv.getDecoder()` methods to typescript definitions (#229).
+ * Fixed semver version to 6.1.2 to support Node 8.x (by @tanandara).
+ * Capped iconv version to 2.x as 3.x has dropped support for older Node versions.
+ * Switched from instanbul to c8 for code coverage.
+
+
+## 0.5.1 / 2020-01-18
+
+ * Added cp720 encoding (#221, by @kr-deps)
+ * (minor) Changed Changelog.md formatting to use h2.
+
+
+## 0.5.0 / 2019-06-26
+
+ * Added UTF-32 encoding, both little-endian and big-endian variants (UTF-32LE, UTF32-BE). If endianness
+ is not provided for decoding, it's deduced automatically from the stream using a heuristic similar to
+ what we use in UTF-16. (great work in #216 by @kshetline)
+ * Several minor updates to README (#217 by @oldj, plus some more)
+ * Added Node versions 10 and 12 to Travis test harness.
+
+
+## 0.4.24 / 2018-08-22
+
+ * Added MIK encoding (#196, by @Ivan-Kalatchev)
+
+
+## 0.4.23 / 2018-05-07
+
+ * Fix deprecation warning in Node v10 due to the last usage of `new Buffer` (#185, by @felixbuenemann)
+ * Switched from NodeBuffer to Buffer in typings (#155 by @felixfbecker, #186 by @larssn)
+
+
+## 0.4.22 / 2018-05-05
+
+ * Use older semver style for dependencies to be compatible with Node version 0.10 (#182, by @dougwilson)
+ * Fix tests to accomodate fixes in Node v10 (#182, by @dougwilson)
+
+
+## 0.4.21 / 2018-04-06
+
+ * Fix encoding canonicalization (#156)
+ * Fix the paths in the "browser" field in package.json (#174 by @LMLB)
+ * Removed "contributors" section in package.json - see Git history instead.
+
+
+## 0.4.20 / 2018-04-06
+
+ * Updated `new Buffer()` usages with recommended replacements as it's being deprecated in Node v10 (#176, #178 by @ChALkeR)
+
+
+## 0.4.19 / 2017-09-09
+
+ * Fixed iso8859-1 codec regression in handling untranslatable characters (#162, caused by #147)
+ * Re-generated windows1255 codec, because it was updated in iconv project
+ * Fixed grammar in error message when iconv-lite is loaded with encoding other than utf8
+
+
+## 0.4.18 / 2017-06-13
+
+ * Fixed CESU-8 regression in Node v8.
+
+
+## 0.4.17 / 2017-04-22
+
+ * Updated typescript definition file to support Angular 2 AoT mode (#153 by @larssn)
+
+
+## 0.4.16 / 2017-04-22
+
+ * Added support for React Native (#150)
+ * Changed iso8859-1 encoding to usine internal 'binary' encoding, as it's the same thing (#147 by @mscdex)
+ * Fixed typo in Readme (#138 by @jiangzhuo)
+ * Fixed build for Node v6.10+ by making correct version comparison
+ * Added a warning if iconv-lite is loaded not as utf-8 (see #142)
+
+
+## 0.4.15 / 2016-11-21
+
+ * Fixed typescript type definition (#137)
+
+
+## 0.4.14 / 2016-11-20
+
+ * Preparation for v1.0
+ * Added Node v6 and latest Node versions to Travis CI test rig
+ * Deprecated Node v0.8 support
+ * Typescript typings (@larssn)
+ * Fix encoding of Euro character in GB 18030 (inspired by @lygstate)
+ * Add ms prefix to dbcs windows encodings (@rokoroku)
+
+
+## 0.4.13 / 2015-10-01
+
+ * Fix silly mistake in deprecation notice.
+
+
+## 0.4.12 / 2015-09-26
+
+ * Node v4 support:
+ * Added CESU-8 decoding (#106)
+ * Added deprecation notice for `extendNodeEncodings`
+ * Added Travis tests for Node v4 and io.js latest (#105 by @Mithgol)
+
+
+## 0.4.11 / 2015-07-03
+
+ * Added CESU-8 encoding.
+
+
+## 0.4.10 / 2015-05-26
+
+ * Changed UTF-16 endianness heuristic to take into account any ASCII chars, not
+ just spaces. This should minimize the importance of "default" endianness.
+
+
+## 0.4.9 / 2015-05-24
+
+ * Streamlined BOM handling: strip BOM by default, add BOM when encoding if
+ addBOM: true. Added docs to Readme.
+ * UTF16 now uses UTF16-LE by default.
+ * Fixed minor issue with big5 encoding.
+ * Added io.js testing on Travis; updated node-iconv version to test against.
+ Now we just skip testing SBCS encodings that node-iconv doesn't support.
+ * (internal refactoring) Updated codec interface to use classes.
+ * Use strict mode in all files.
+
+
+## 0.4.8 / 2015-04-14
+
+ * added alias UNICODE-1-1-UTF-7 for UTF-7 encoding (#94)
+
+
+## 0.4.7 / 2015-02-05
+
+ * stop official support of Node.js v0.8. Should still work, but no guarantees.
+ reason: Packages needed for testing are hard to get on Travis CI.
+ * work in environment where Object.prototype is monkey patched with enumerable
+ props (#89).
+
+
+## 0.4.6 / 2015-01-12
+
+ * fix rare aliases of single-byte encodings (thanks @mscdex)
+ * double the timeout for dbcs tests to make them less flaky on travis
+
+
+## 0.4.5 / 2014-11-20
+
+ * fix windows-31j and x-sjis encoding support (@nleush)
+ * minor fix: undefined variable reference when internal error happens
+
+
+## 0.4.4 / 2014-07-16
+
+ * added encodings UTF-7 (RFC2152) and UTF-7-IMAP (RFC3501 Section 5.1.3)
+ * fixed streaming base64 encoding
+
+
+## 0.4.3 / 2014-06-14
+
+ * added encodings UTF-16BE and UTF-16 with BOM
+
+
+## 0.4.2 / 2014-06-12
+
+ * don't throw exception if `extendNodeEncodings()` is called more than once
+
+
+## 0.4.1 / 2014-06-11
+
+ * codepage 808 added
+
+
+## 0.4.0 / 2014-06-10
+
+ * code is rewritten from scratch
+ * all widespread encodings are supported
+ * streaming interface added
+ * browserify compatibility added
+ * (optional) extend core primitive encodings to make usage even simpler
+ * moved from vows to mocha as the testing framework
+
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/LICENSE b/node_modules/d3-dsv/node_modules/iconv-lite/LICENSE
new file mode 100644
index 00000000..d518d837
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/LICENSE
@@ -0,0 +1,21 @@
+Copyright (c) 2011 Alexander Shtuchkin
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/README.md b/node_modules/d3-dsv/node_modules/iconv-lite/README.md
new file mode 100644
index 00000000..3c97f873
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/README.md
@@ -0,0 +1,130 @@
+## iconv-lite: Pure JS character encoding conversion
+
+ * No need for native code compilation. Quick to install, works on Windows and in sandboxed environments like [Cloud9](http://c9.io).
+ * Used in popular projects like [Express.js (body_parser)](https://github.com/expressjs/body-parser),
+ [Grunt](http://gruntjs.com/), [Nodemailer](http://www.nodemailer.com/), [Yeoman](http://yeoman.io/) and others.
+ * Faster than [node-iconv](https://github.com/bnoordhuis/node-iconv) (see below for performance comparison).
+ * Intuitive encode/decode API, including Streaming support.
+ * In-browser usage via [browserify](https://github.com/substack/node-browserify) or [webpack](https://webpack.js.org/) (~180kb gzip compressed with Buffer shim included).
+ * Typescript [type definition file](https://github.com/ashtuchkin/iconv-lite/blob/master/lib/index.d.ts) included.
+ * React Native is supported (need to install `stream` module to enable Streaming API).
+ * License: MIT.
+
+[](https://npmjs.org/package/iconv-lite/)
+[](https://travis-ci.org/ashtuchkin/iconv-lite)
+[](https://npmjs.org/package/iconv-lite/)
+[](https://npmjs.org/package/iconv-lite/)
+[](https://npmjs.org/package/iconv-lite/)
+
+## Usage
+### Basic API
+```javascript
+var iconv = require('iconv-lite');
+
+// Convert from an encoded buffer to a js string.
+str = iconv.decode(Buffer.from([0x68, 0x65, 0x6c, 0x6c, 0x6f]), 'win1251');
+
+// Convert from a js string to an encoded buffer.
+buf = iconv.encode("Sample input string", 'win1251');
+
+// Check if encoding is supported
+iconv.encodingExists("us-ascii")
+```
+
+### Streaming API
+```javascript
+
+// Decode stream (from binary data stream to js strings)
+http.createServer(function(req, res) {
+ var converterStream = iconv.decodeStream('win1251');
+ req.pipe(converterStream);
+
+ converterStream.on('data', function(str) {
+ console.log(str); // Do something with decoded strings, chunk-by-chunk.
+ });
+});
+
+// Convert encoding streaming example
+fs.createReadStream('file-in-win1251.txt')
+ .pipe(iconv.decodeStream('win1251'))
+ .pipe(iconv.encodeStream('ucs2'))
+ .pipe(fs.createWriteStream('file-in-ucs2.txt'));
+
+// Sugar: all encode/decode streams have .collect(cb) method to accumulate data.
+http.createServer(function(req, res) {
+ req.pipe(iconv.decodeStream('win1251')).collect(function(err, body) {
+ assert(typeof body == 'string');
+ console.log(body); // full request body string
+ });
+});
+```
+
+## Supported encodings
+
+ * All node.js native encodings: utf8, ucs2 / utf16-le, ascii, binary, base64, hex.
+ * Additional unicode encodings: utf16, utf16-be, utf-7, utf-7-imap, utf32, utf32-le, and utf32-be.
+ * All widespread singlebyte encodings: Windows 125x family, ISO-8859 family,
+ IBM/DOS codepages, Macintosh family, KOI8 family, all others supported by iconv library.
+ Aliases like 'latin1', 'us-ascii' also supported.
+ * All widespread multibyte encodings: CP932, CP936, CP949, CP950, GB2312, GBK, GB18030, Big5, Shift_JIS, EUC-JP.
+
+See [all supported encodings on wiki](https://github.com/ashtuchkin/iconv-lite/wiki/Supported-Encodings).
+
+Most singlebyte encodings are generated automatically from [node-iconv](https://github.com/bnoordhuis/node-iconv). Thank you Ben Noordhuis and libiconv authors!
+
+Multibyte encodings are generated from [Unicode.org mappings](http://www.unicode.org/Public/MAPPINGS/) and [WHATWG Encoding Standard mappings](http://encoding.spec.whatwg.org/). Thank you, respective authors!
+
+
+## Encoding/decoding speed
+
+Comparison with node-iconv module (1000x256kb, on MacBook Pro, Core i5/2.6 GHz, Node v0.12.0).
+Note: your results may vary, so please always check on your hardware.
+
+ operation iconv@2.1.4 iconv-lite@0.4.7
+ ----------------------------------------------------------
+ encode('win1251') ~96 Mb/s ~320 Mb/s
+ decode('win1251') ~95 Mb/s ~246 Mb/s
+
+## BOM handling
+
+ * Decoding: BOM is stripped by default, unless overridden by passing `stripBOM: false` in options
+ (f.ex. `iconv.decode(buf, enc, {stripBOM: false})`).
+ A callback might also be given as a `stripBOM` parameter - it'll be called if BOM character was actually found.
+ * If you want to detect UTF-8 BOM when decoding other encodings, use [node-autodetect-decoder-stream](https://github.com/danielgindi/node-autodetect-decoder-stream) module.
+ * Encoding: No BOM added, unless overridden by `addBOM: true` option.
+
+## UTF-16 Encodings
+
+This library supports UTF-16LE, UTF-16BE and UTF-16 encodings. First two are straightforward, but UTF-16 is trying to be
+smart about endianness in the following ways:
+ * Decoding: uses BOM and 'spaces heuristic' to determine input endianness. Default is UTF-16LE, but can be
+ overridden with `defaultEncoding: 'utf-16be'` option. Strips BOM unless `stripBOM: false`.
+ * Encoding: uses UTF-16LE and writes BOM by default. Use `addBOM: false` to override.
+
+## UTF-32 Encodings
+
+This library supports UTF-32LE, UTF-32BE and UTF-32 encodings. Like the UTF-16 encoding above, UTF-32 defaults to UTF-32LE, but uses BOM and 'spaces heuristics' to determine input endianness.
+ * The default of UTF-32LE can be overridden with the `defaultEncoding: 'utf-32be'` option. Strips BOM unless `stripBOM: false`.
+ * Encoding: uses UTF-32LE and writes BOM by default. Use `addBOM: false` to override. (`defaultEncoding: 'utf-32be'` can also be used here to change encoding.)
+
+## Other notes
+
+When decoding, be sure to supply a Buffer to decode() method, otherwise [bad things usually happen](https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding).
+Untranslatable characters are set to � or ?. No transliteration is currently supported.
+Node versions 0.10.31 and 0.11.13 are buggy, don't use them (see #65, #77).
+
+## Testing
+
+```bash
+$ git clone git@github.com:ashtuchkin/iconv-lite.git
+$ cd iconv-lite
+$ npm install
+$ npm test
+
+$ # To view performance:
+$ node test/performance.js
+
+$ # To view test coverage:
+$ npm run coverage
+$ open coverage/lcov-report/index.html
+```
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-codec.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-codec.js
new file mode 100644
index 00000000..fa839170
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-codec.js
@@ -0,0 +1,597 @@
+"use strict";
+var Buffer = require("safer-buffer").Buffer;
+
+// Multibyte codec. In this scheme, a character is represented by 1 or more bytes.
+// Our codec supports UTF-16 surrogates, extensions for GB18030 and unicode sequences.
+// To save memory and loading time, we read table files only when requested.
+
+exports._dbcs = DBCSCodec;
+
+var UNASSIGNED = -1,
+ GB18030_CODE = -2,
+ SEQ_START = -10,
+ NODE_START = -1000,
+ UNASSIGNED_NODE = new Array(0x100),
+ DEF_CHAR = -1;
+
+for (var i = 0; i < 0x100; i++)
+ UNASSIGNED_NODE[i] = UNASSIGNED;
+
+
+// Class DBCSCodec reads and initializes mapping tables.
+function DBCSCodec(codecOptions, iconv) {
+ this.encodingName = codecOptions.encodingName;
+ if (!codecOptions)
+ throw new Error("DBCS codec is called without the data.")
+ if (!codecOptions.table)
+ throw new Error("Encoding '" + this.encodingName + "' has no data.");
+
+ // Load tables.
+ var mappingTable = codecOptions.table();
+
+
+ // Decode tables: MBCS -> Unicode.
+
+ // decodeTables is a trie, encoded as an array of arrays of integers. Internal arrays are trie nodes and all have len = 256.
+ // Trie root is decodeTables[0].
+ // Values: >= 0 -> unicode character code. can be > 0xFFFF
+ // == UNASSIGNED -> unknown/unassigned sequence.
+ // == GB18030_CODE -> this is the end of a GB18030 4-byte sequence.
+ // <= NODE_START -> index of the next node in our trie to process next byte.
+ // <= SEQ_START -> index of the start of a character code sequence, in decodeTableSeq.
+ this.decodeTables = [];
+ this.decodeTables[0] = UNASSIGNED_NODE.slice(0); // Create root node.
+
+ // Sometimes a MBCS char corresponds to a sequence of unicode chars. We store them as arrays of integers here.
+ this.decodeTableSeq = [];
+
+ // Actual mapping tables consist of chunks. Use them to fill up decode tables.
+ for (var i = 0; i < mappingTable.length; i++)
+ this._addDecodeChunk(mappingTable[i]);
+
+ // Load & create GB18030 tables when needed.
+ if (typeof codecOptions.gb18030 === 'function') {
+ this.gb18030 = codecOptions.gb18030(); // Load GB18030 ranges.
+
+ // Add GB18030 common decode nodes.
+ var commonThirdByteNodeIdx = this.decodeTables.length;
+ this.decodeTables.push(UNASSIGNED_NODE.slice(0));
+
+ var commonFourthByteNodeIdx = this.decodeTables.length;
+ this.decodeTables.push(UNASSIGNED_NODE.slice(0));
+
+ // Fill out the tree
+ var firstByteNode = this.decodeTables[0];
+ for (var i = 0x81; i <= 0xFE; i++) {
+ var secondByteNode = this.decodeTables[NODE_START - firstByteNode[i]];
+ for (var j = 0x30; j <= 0x39; j++) {
+ if (secondByteNode[j] === UNASSIGNED) {
+ secondByteNode[j] = NODE_START - commonThirdByteNodeIdx;
+ } else if (secondByteNode[j] > NODE_START) {
+ throw new Error("gb18030 decode tables conflict at byte 2");
+ }
+
+ var thirdByteNode = this.decodeTables[NODE_START - secondByteNode[j]];
+ for (var k = 0x81; k <= 0xFE; k++) {
+ if (thirdByteNode[k] === UNASSIGNED) {
+ thirdByteNode[k] = NODE_START - commonFourthByteNodeIdx;
+ } else if (thirdByteNode[k] === NODE_START - commonFourthByteNodeIdx) {
+ continue;
+ } else if (thirdByteNode[k] > NODE_START) {
+ throw new Error("gb18030 decode tables conflict at byte 3");
+ }
+
+ var fourthByteNode = this.decodeTables[NODE_START - thirdByteNode[k]];
+ for (var l = 0x30; l <= 0x39; l++) {
+ if (fourthByteNode[l] === UNASSIGNED)
+ fourthByteNode[l] = GB18030_CODE;
+ }
+ }
+ }
+ }
+ }
+
+ this.defaultCharUnicode = iconv.defaultCharUnicode;
+
+
+ // Encode tables: Unicode -> DBCS.
+
+ // `encodeTable` is array mapping from unicode char to encoded char. All its values are integers for performance.
+ // Because it can be sparse, it is represented as array of buckets by 256 chars each. Bucket can be null.
+ // Values: >= 0 -> it is a normal char. Write the value (if <=256 then 1 byte, if <=65536 then 2 bytes, etc.).
+ // == UNASSIGNED -> no conversion found. Output a default char.
+ // <= SEQ_START -> it's an index in encodeTableSeq, see below. The character starts a sequence.
+ this.encodeTable = [];
+
+ // `encodeTableSeq` is used when a sequence of unicode characters is encoded as a single code. We use a tree of
+ // objects where keys correspond to characters in sequence and leafs are the encoded dbcs values. A special DEF_CHAR key
+ // means end of sequence (needed when one sequence is a strict subsequence of another).
+ // Objects are kept separately from encodeTable to increase performance.
+ this.encodeTableSeq = [];
+
+ // Some chars can be decoded, but need not be encoded.
+ var skipEncodeChars = {};
+ if (codecOptions.encodeSkipVals)
+ for (var i = 0; i < codecOptions.encodeSkipVals.length; i++) {
+ var val = codecOptions.encodeSkipVals[i];
+ if (typeof val === 'number')
+ skipEncodeChars[val] = true;
+ else
+ for (var j = val.from; j <= val.to; j++)
+ skipEncodeChars[j] = true;
+ }
+
+ // Use decode trie to recursively fill out encode tables.
+ this._fillEncodeTable(0, 0, skipEncodeChars);
+
+ // Add more encoding pairs when needed.
+ if (codecOptions.encodeAdd) {
+ for (var uChar in codecOptions.encodeAdd)
+ if (Object.prototype.hasOwnProperty.call(codecOptions.encodeAdd, uChar))
+ this._setEncodeChar(uChar.charCodeAt(0), codecOptions.encodeAdd[uChar]);
+ }
+
+ this.defCharSB = this.encodeTable[0][iconv.defaultCharSingleByte.charCodeAt(0)];
+ if (this.defCharSB === UNASSIGNED) this.defCharSB = this.encodeTable[0]['?'];
+ if (this.defCharSB === UNASSIGNED) this.defCharSB = "?".charCodeAt(0);
+}
+
+DBCSCodec.prototype.encoder = DBCSEncoder;
+DBCSCodec.prototype.decoder = DBCSDecoder;
+
+// Decoder helpers
+DBCSCodec.prototype._getDecodeTrieNode = function(addr) {
+ var bytes = [];
+ for (; addr > 0; addr >>>= 8)
+ bytes.push(addr & 0xFF);
+ if (bytes.length == 0)
+ bytes.push(0);
+
+ var node = this.decodeTables[0];
+ for (var i = bytes.length-1; i > 0; i--) { // Traverse nodes deeper into the trie.
+ var val = node[bytes[i]];
+
+ if (val == UNASSIGNED) { // Create new node.
+ node[bytes[i]] = NODE_START - this.decodeTables.length;
+ this.decodeTables.push(node = UNASSIGNED_NODE.slice(0));
+ }
+ else if (val <= NODE_START) { // Existing node.
+ node = this.decodeTables[NODE_START - val];
+ }
+ else
+ throw new Error("Overwrite byte in " + this.encodingName + ", addr: " + addr.toString(16));
+ }
+ return node;
+}
+
+
+DBCSCodec.prototype._addDecodeChunk = function(chunk) {
+ // First element of chunk is the hex mbcs code where we start.
+ var curAddr = parseInt(chunk[0], 16);
+
+ // Choose the decoding node where we'll write our chars.
+ var writeTable = this._getDecodeTrieNode(curAddr);
+ curAddr = curAddr & 0xFF;
+
+ // Write all other elements of the chunk to the table.
+ for (var k = 1; k < chunk.length; k++) {
+ var part = chunk[k];
+ if (typeof part === "string") { // String, write as-is.
+ for (var l = 0; l < part.length;) {
+ var code = part.charCodeAt(l++);
+ if (0xD800 <= code && code < 0xDC00) { // Decode surrogate
+ var codeTrail = part.charCodeAt(l++);
+ if (0xDC00 <= codeTrail && codeTrail < 0xE000)
+ writeTable[curAddr++] = 0x10000 + (code - 0xD800) * 0x400 + (codeTrail - 0xDC00);
+ else
+ throw new Error("Incorrect surrogate pair in " + this.encodingName + " at chunk " + chunk[0]);
+ }
+ else if (0x0FF0 < code && code <= 0x0FFF) { // Character sequence (our own encoding used)
+ var len = 0xFFF - code + 2;
+ var seq = [];
+ for (var m = 0; m < len; m++)
+ seq.push(part.charCodeAt(l++)); // Simple variation: don't support surrogates or subsequences in seq.
+
+ writeTable[curAddr++] = SEQ_START - this.decodeTableSeq.length;
+ this.decodeTableSeq.push(seq);
+ }
+ else
+ writeTable[curAddr++] = code; // Basic char
+ }
+ }
+ else if (typeof part === "number") { // Integer, meaning increasing sequence starting with prev character.
+ var charCode = writeTable[curAddr - 1] + 1;
+ for (var l = 0; l < part; l++)
+ writeTable[curAddr++] = charCode++;
+ }
+ else
+ throw new Error("Incorrect type '" + typeof part + "' given in " + this.encodingName + " at chunk " + chunk[0]);
+ }
+ if (curAddr > 0xFF)
+ throw new Error("Incorrect chunk in " + this.encodingName + " at addr " + chunk[0] + ": too long" + curAddr);
+}
+
+// Encoder helpers
+DBCSCodec.prototype._getEncodeBucket = function(uCode) {
+ var high = uCode >> 8; // This could be > 0xFF because of astral characters.
+ if (this.encodeTable[high] === undefined)
+ this.encodeTable[high] = UNASSIGNED_NODE.slice(0); // Create bucket on demand.
+ return this.encodeTable[high];
+}
+
+DBCSCodec.prototype._setEncodeChar = function(uCode, dbcsCode) {
+ var bucket = this._getEncodeBucket(uCode);
+ var low = uCode & 0xFF;
+ if (bucket[low] <= SEQ_START)
+ this.encodeTableSeq[SEQ_START-bucket[low]][DEF_CHAR] = dbcsCode; // There's already a sequence, set a single-char subsequence of it.
+ else if (bucket[low] == UNASSIGNED)
+ bucket[low] = dbcsCode;
+}
+
+DBCSCodec.prototype._setEncodeSequence = function(seq, dbcsCode) {
+
+ // Get the root of character tree according to first character of the sequence.
+ var uCode = seq[0];
+ var bucket = this._getEncodeBucket(uCode);
+ var low = uCode & 0xFF;
+
+ var node;
+ if (bucket[low] <= SEQ_START) {
+ // There's already a sequence with - use it.
+ node = this.encodeTableSeq[SEQ_START-bucket[low]];
+ }
+ else {
+ // There was no sequence object - allocate a new one.
+ node = {};
+ if (bucket[low] !== UNASSIGNED) node[DEF_CHAR] = bucket[low]; // If a char was set before - make it a single-char subsequence.
+ bucket[low] = SEQ_START - this.encodeTableSeq.length;
+ this.encodeTableSeq.push(node);
+ }
+
+ // Traverse the character tree, allocating new nodes as needed.
+ for (var j = 1; j < seq.length-1; j++) {
+ var oldVal = node[uCode];
+ if (typeof oldVal === 'object')
+ node = oldVal;
+ else {
+ node = node[uCode] = {}
+ if (oldVal !== undefined)
+ node[DEF_CHAR] = oldVal
+ }
+ }
+
+ // Set the leaf to given dbcsCode.
+ uCode = seq[seq.length-1];
+ node[uCode] = dbcsCode;
+}
+
+DBCSCodec.prototype._fillEncodeTable = function(nodeIdx, prefix, skipEncodeChars) {
+ var node = this.decodeTables[nodeIdx];
+ var hasValues = false;
+ var subNodeEmpty = {};
+ for (var i = 0; i < 0x100; i++) {
+ var uCode = node[i];
+ var mbCode = prefix + i;
+ if (skipEncodeChars[mbCode])
+ continue;
+
+ if (uCode >= 0) {
+ this._setEncodeChar(uCode, mbCode);
+ hasValues = true;
+ } else if (uCode <= NODE_START) {
+ var subNodeIdx = NODE_START - uCode;
+ if (!subNodeEmpty[subNodeIdx]) { // Skip empty subtrees (they are too large in gb18030).
+ var newPrefix = (mbCode << 8) >>> 0; // NOTE: '>>> 0' keeps 32-bit num positive.
+ if (this._fillEncodeTable(subNodeIdx, newPrefix, skipEncodeChars))
+ hasValues = true;
+ else
+ subNodeEmpty[subNodeIdx] = true;
+ }
+ } else if (uCode <= SEQ_START) {
+ this._setEncodeSequence(this.decodeTableSeq[SEQ_START - uCode], mbCode);
+ hasValues = true;
+ }
+ }
+ return hasValues;
+}
+
+
+
+// == Encoder ==================================================================
+
+function DBCSEncoder(options, codec) {
+ // Encoder state
+ this.leadSurrogate = -1;
+ this.seqObj = undefined;
+
+ // Static data
+ this.encodeTable = codec.encodeTable;
+ this.encodeTableSeq = codec.encodeTableSeq;
+ this.defaultCharSingleByte = codec.defCharSB;
+ this.gb18030 = codec.gb18030;
+}
+
+DBCSEncoder.prototype.write = function(str) {
+ var newBuf = Buffer.alloc(str.length * (this.gb18030 ? 4 : 3)),
+ leadSurrogate = this.leadSurrogate,
+ seqObj = this.seqObj, nextChar = -1,
+ i = 0, j = 0;
+
+ while (true) {
+ // 0. Get next character.
+ if (nextChar === -1) {
+ if (i == str.length) break;
+ var uCode = str.charCodeAt(i++);
+ }
+ else {
+ var uCode = nextChar;
+ nextChar = -1;
+ }
+
+ // 1. Handle surrogates.
+ if (0xD800 <= uCode && uCode < 0xE000) { // Char is one of surrogates.
+ if (uCode < 0xDC00) { // We've got lead surrogate.
+ if (leadSurrogate === -1) {
+ leadSurrogate = uCode;
+ continue;
+ } else {
+ leadSurrogate = uCode;
+ // Double lead surrogate found.
+ uCode = UNASSIGNED;
+ }
+ } else { // We've got trail surrogate.
+ if (leadSurrogate !== -1) {
+ uCode = 0x10000 + (leadSurrogate - 0xD800) * 0x400 + (uCode - 0xDC00);
+ leadSurrogate = -1;
+ } else {
+ // Incomplete surrogate pair - only trail surrogate found.
+ uCode = UNASSIGNED;
+ }
+
+ }
+ }
+ else if (leadSurrogate !== -1) {
+ // Incomplete surrogate pair - only lead surrogate found.
+ nextChar = uCode; uCode = UNASSIGNED; // Write an error, then current char.
+ leadSurrogate = -1;
+ }
+
+ // 2. Convert uCode character.
+ var dbcsCode = UNASSIGNED;
+ if (seqObj !== undefined && uCode != UNASSIGNED) { // We are in the middle of the sequence
+ var resCode = seqObj[uCode];
+ if (typeof resCode === 'object') { // Sequence continues.
+ seqObj = resCode;
+ continue;
+
+ } else if (typeof resCode == 'number') { // Sequence finished. Write it.
+ dbcsCode = resCode;
+
+ } else if (resCode == undefined) { // Current character is not part of the sequence.
+
+ // Try default character for this sequence
+ resCode = seqObj[DEF_CHAR];
+ if (resCode !== undefined) {
+ dbcsCode = resCode; // Found. Write it.
+ nextChar = uCode; // Current character will be written too in the next iteration.
+
+ } else {
+ // TODO: What if we have no default? (resCode == undefined)
+ // Then, we should write first char of the sequence as-is and try the rest recursively.
+ // Didn't do it for now because no encoding has this situation yet.
+ // Currently, just skip the sequence and write current char.
+ }
+ }
+ seqObj = undefined;
+ }
+ else if (uCode >= 0) { // Regular character
+ var subtable = this.encodeTable[uCode >> 8];
+ if (subtable !== undefined)
+ dbcsCode = subtable[uCode & 0xFF];
+
+ if (dbcsCode <= SEQ_START) { // Sequence start
+ seqObj = this.encodeTableSeq[SEQ_START-dbcsCode];
+ continue;
+ }
+
+ if (dbcsCode == UNASSIGNED && this.gb18030) {
+ // Use GB18030 algorithm to find character(s) to write.
+ var idx = findIdx(this.gb18030.uChars, uCode);
+ if (idx != -1) {
+ var dbcsCode = this.gb18030.gbChars[idx] + (uCode - this.gb18030.uChars[idx]);
+ newBuf[j++] = 0x81 + Math.floor(dbcsCode / 12600); dbcsCode = dbcsCode % 12600;
+ newBuf[j++] = 0x30 + Math.floor(dbcsCode / 1260); dbcsCode = dbcsCode % 1260;
+ newBuf[j++] = 0x81 + Math.floor(dbcsCode / 10); dbcsCode = dbcsCode % 10;
+ newBuf[j++] = 0x30 + dbcsCode;
+ continue;
+ }
+ }
+ }
+
+ // 3. Write dbcsCode character.
+ if (dbcsCode === UNASSIGNED)
+ dbcsCode = this.defaultCharSingleByte;
+
+ if (dbcsCode < 0x100) {
+ newBuf[j++] = dbcsCode;
+ }
+ else if (dbcsCode < 0x10000) {
+ newBuf[j++] = dbcsCode >> 8; // high byte
+ newBuf[j++] = dbcsCode & 0xFF; // low byte
+ }
+ else if (dbcsCode < 0x1000000) {
+ newBuf[j++] = dbcsCode >> 16;
+ newBuf[j++] = (dbcsCode >> 8) & 0xFF;
+ newBuf[j++] = dbcsCode & 0xFF;
+ } else {
+ newBuf[j++] = dbcsCode >>> 24;
+ newBuf[j++] = (dbcsCode >>> 16) & 0xFF;
+ newBuf[j++] = (dbcsCode >>> 8) & 0xFF;
+ newBuf[j++] = dbcsCode & 0xFF;
+ }
+ }
+
+ this.seqObj = seqObj;
+ this.leadSurrogate = leadSurrogate;
+ return newBuf.slice(0, j);
+}
+
+DBCSEncoder.prototype.end = function() {
+ if (this.leadSurrogate === -1 && this.seqObj === undefined)
+ return; // All clean. Most often case.
+
+ var newBuf = Buffer.alloc(10), j = 0;
+
+ if (this.seqObj) { // We're in the sequence.
+ var dbcsCode = this.seqObj[DEF_CHAR];
+ if (dbcsCode !== undefined) { // Write beginning of the sequence.
+ if (dbcsCode < 0x100) {
+ newBuf[j++] = dbcsCode;
+ }
+ else {
+ newBuf[j++] = dbcsCode >> 8; // high byte
+ newBuf[j++] = dbcsCode & 0xFF; // low byte
+ }
+ } else {
+ // See todo above.
+ }
+ this.seqObj = undefined;
+ }
+
+ if (this.leadSurrogate !== -1) {
+ // Incomplete surrogate pair - only lead surrogate found.
+ newBuf[j++] = this.defaultCharSingleByte;
+ this.leadSurrogate = -1;
+ }
+
+ return newBuf.slice(0, j);
+}
+
+// Export for testing
+DBCSEncoder.prototype.findIdx = findIdx;
+
+
+// == Decoder ==================================================================
+
+function DBCSDecoder(options, codec) {
+ // Decoder state
+ this.nodeIdx = 0;
+ this.prevBytes = [];
+
+ // Static data
+ this.decodeTables = codec.decodeTables;
+ this.decodeTableSeq = codec.decodeTableSeq;
+ this.defaultCharUnicode = codec.defaultCharUnicode;
+ this.gb18030 = codec.gb18030;
+}
+
+DBCSDecoder.prototype.write = function(buf) {
+ var newBuf = Buffer.alloc(buf.length*2),
+ nodeIdx = this.nodeIdx,
+ prevBytes = this.prevBytes, prevOffset = this.prevBytes.length,
+ seqStart = -this.prevBytes.length, // idx of the start of current parsed sequence.
+ uCode;
+
+ for (var i = 0, j = 0; i < buf.length; i++) {
+ var curByte = (i >= 0) ? buf[i] : prevBytes[i + prevOffset];
+
+ // Lookup in current trie node.
+ var uCode = this.decodeTables[nodeIdx][curByte];
+
+ if (uCode >= 0) {
+ // Normal character, just use it.
+ }
+ else if (uCode === UNASSIGNED) { // Unknown char.
+ // TODO: Callback with seq.
+ uCode = this.defaultCharUnicode.charCodeAt(0);
+ i = seqStart; // Skip one byte ('i' will be incremented by the for loop) and try to parse again.
+ }
+ else if (uCode === GB18030_CODE) {
+ if (i >= 3) {
+ var ptr = (buf[i-3]-0x81)*12600 + (buf[i-2]-0x30)*1260 + (buf[i-1]-0x81)*10 + (curByte-0x30);
+ } else {
+ var ptr = (prevBytes[i-3+prevOffset]-0x81)*12600 +
+ (((i-2 >= 0) ? buf[i-2] : prevBytes[i-2+prevOffset])-0x30)*1260 +
+ (((i-1 >= 0) ? buf[i-1] : prevBytes[i-1+prevOffset])-0x81)*10 +
+ (curByte-0x30);
+ }
+ var idx = findIdx(this.gb18030.gbChars, ptr);
+ uCode = this.gb18030.uChars[idx] + ptr - this.gb18030.gbChars[idx];
+ }
+ else if (uCode <= NODE_START) { // Go to next trie node.
+ nodeIdx = NODE_START - uCode;
+ continue;
+ }
+ else if (uCode <= SEQ_START) { // Output a sequence of chars.
+ var seq = this.decodeTableSeq[SEQ_START - uCode];
+ for (var k = 0; k < seq.length - 1; k++) {
+ uCode = seq[k];
+ newBuf[j++] = uCode & 0xFF;
+ newBuf[j++] = uCode >> 8;
+ }
+ uCode = seq[seq.length-1];
+ }
+ else
+ throw new Error("iconv-lite internal error: invalid decoding table value " + uCode + " at " + nodeIdx + "/" + curByte);
+
+ // Write the character to buffer, handling higher planes using surrogate pair.
+ if (uCode >= 0x10000) {
+ uCode -= 0x10000;
+ var uCodeLead = 0xD800 | (uCode >> 10);
+ newBuf[j++] = uCodeLead & 0xFF;
+ newBuf[j++] = uCodeLead >> 8;
+
+ uCode = 0xDC00 | (uCode & 0x3FF);
+ }
+ newBuf[j++] = uCode & 0xFF;
+ newBuf[j++] = uCode >> 8;
+
+ // Reset trie node.
+ nodeIdx = 0; seqStart = i+1;
+ }
+
+ this.nodeIdx = nodeIdx;
+ this.prevBytes = (seqStart >= 0)
+ ? Array.prototype.slice.call(buf, seqStart)
+ : prevBytes.slice(seqStart + prevOffset).concat(Array.prototype.slice.call(buf));
+
+ return newBuf.slice(0, j).toString('ucs2');
+}
+
+DBCSDecoder.prototype.end = function() {
+ var ret = '';
+
+ // Try to parse all remaining chars.
+ while (this.prevBytes.length > 0) {
+ // Skip 1 character in the buffer.
+ ret += this.defaultCharUnicode;
+ var bytesArr = this.prevBytes.slice(1);
+
+ // Parse remaining as usual.
+ this.prevBytes = [];
+ this.nodeIdx = 0;
+ if (bytesArr.length > 0)
+ ret += this.write(bytesArr);
+ }
+
+ this.prevBytes = [];
+ this.nodeIdx = 0;
+ return ret;
+}
+
+// Binary search for GB18030. Returns largest i such that table[i] <= val.
+function findIdx(table, val) {
+ if (table[0] > val)
+ return -1;
+
+ var l = 0, r = table.length;
+ while (l < r-1) { // always table[l] <= val < table[r]
+ var mid = l + ((r-l+1) >> 1);
+ if (table[mid] <= val)
+ l = mid;
+ else
+ r = mid;
+ }
+ return l;
+}
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-data.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-data.js
new file mode 100644
index 00000000..0d17e582
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/dbcs-data.js
@@ -0,0 +1,188 @@
+"use strict";
+
+// Description of supported double byte encodings and aliases.
+// Tables are not require()-d until they are needed to speed up library load.
+// require()-s are direct to support Browserify.
+
+module.exports = {
+
+ // == Japanese/ShiftJIS ====================================================
+ // All japanese encodings are based on JIS X set of standards:
+ // JIS X 0201 - Single-byte encoding of ASCII + ¥ + Kana chars at 0xA1-0xDF.
+ // JIS X 0208 - Main set of 6879 characters, placed in 94x94 plane, to be encoded by 2 bytes.
+ // Has several variations in 1978, 1983, 1990 and 1997.
+ // JIS X 0212 - Supplementary plane of 6067 chars in 94x94 plane. 1990. Effectively dead.
+ // JIS X 0213 - Extension and modern replacement of 0208 and 0212. Total chars: 11233.
+ // 2 planes, first is superset of 0208, second - revised 0212.
+ // Introduced in 2000, revised 2004. Some characters are in Unicode Plane 2 (0x2xxxx)
+
+ // Byte encodings are:
+ // * Shift_JIS: Compatible with 0201, uses not defined chars in top half as lead bytes for double-byte
+ // encoding of 0208. Lead byte ranges: 0x81-0x9F, 0xE0-0xEF; Trail byte ranges: 0x40-0x7E, 0x80-0x9E, 0x9F-0xFC.
+ // Windows CP932 is a superset of Shift_JIS. Some companies added more chars, notably KDDI.
+ // * EUC-JP: Up to 3 bytes per character. Used mostly on *nixes.
+ // 0x00-0x7F - lower part of 0201
+ // 0x8E, 0xA1-0xDF - upper part of 0201
+ // (0xA1-0xFE)x2 - 0208 plane (94x94).
+ // 0x8F, (0xA1-0xFE)x2 - 0212 plane (94x94).
+ // * JIS X 208: 7-bit, direct encoding of 0208. Byte ranges: 0x21-0x7E (94 values). Uncommon.
+ // Used as-is in ISO2022 family.
+ // * ISO2022-JP: Stateful encoding, with escape sequences to switch between ASCII,
+ // 0201-1976 Roman, 0208-1978, 0208-1983.
+ // * ISO2022-JP-1: Adds esc seq for 0212-1990.
+ // * ISO2022-JP-2: Adds esc seq for GB2313-1980, KSX1001-1992, ISO8859-1, ISO8859-7.
+ // * ISO2022-JP-3: Adds esc seq for 0201-1976 Kana set, 0213-2000 Planes 1, 2.
+ // * ISO2022-JP-2004: Adds 0213-2004 Plane 1.
+ //
+ // After JIS X 0213 appeared, Shift_JIS-2004, EUC-JISX0213 and ISO2022-JP-2004 followed, with just changing the planes.
+ //
+ // Overall, it seems that it's a mess :( http://www8.plala.or.jp/tkubota1/unicode-symbols-map2.html
+
+ 'shiftjis': {
+ type: '_dbcs',
+ table: function() { return require('./tables/shiftjis.json') },
+ encodeAdd: {'\u00a5': 0x5C, '\u203E': 0x7E},
+ encodeSkipVals: [{from: 0xED40, to: 0xF940}],
+ },
+ 'csshiftjis': 'shiftjis',
+ 'mskanji': 'shiftjis',
+ 'sjis': 'shiftjis',
+ 'windows31j': 'shiftjis',
+ 'ms31j': 'shiftjis',
+ 'xsjis': 'shiftjis',
+ 'windows932': 'shiftjis',
+ 'ms932': 'shiftjis',
+ '932': 'shiftjis',
+ 'cp932': 'shiftjis',
+
+ 'eucjp': {
+ type: '_dbcs',
+ table: function() { return require('./tables/eucjp.json') },
+ encodeAdd: {'\u00a5': 0x5C, '\u203E': 0x7E},
+ },
+
+ // TODO: KDDI extension to Shift_JIS
+ // TODO: IBM CCSID 942 = CP932, but F0-F9 custom chars and other char changes.
+ // TODO: IBM CCSID 943 = Shift_JIS = CP932 with original Shift_JIS lower 128 chars.
+
+
+ // == Chinese/GBK ==========================================================
+ // http://en.wikipedia.org/wiki/GBK
+ // We mostly implement W3C recommendation: https://www.w3.org/TR/encoding/#gbk-encoder
+
+ // Oldest GB2312 (1981, ~7600 chars) is a subset of CP936
+ 'gb2312': 'cp936',
+ 'gb231280': 'cp936',
+ 'gb23121980': 'cp936',
+ 'csgb2312': 'cp936',
+ 'csiso58gb231280': 'cp936',
+ 'euccn': 'cp936',
+
+ // Microsoft's CP936 is a subset and approximation of GBK.
+ 'windows936': 'cp936',
+ 'ms936': 'cp936',
+ '936': 'cp936',
+ 'cp936': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp936.json') },
+ },
+
+ // GBK (~22000 chars) is an extension of CP936 that added user-mapped chars and some other.
+ 'gbk': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp936.json').concat(require('./tables/gbk-added.json')) },
+ },
+ 'xgbk': 'gbk',
+ 'isoir58': 'gbk',
+
+ // GB18030 is an algorithmic extension of GBK.
+ // Main source: https://www.w3.org/TR/encoding/#gbk-encoder
+ // http://icu-project.org/docs/papers/gb18030.html
+ // http://source.icu-project.org/repos/icu/data/trunk/charset/data/xml/gb-18030-2000.xml
+ // http://www.khngai.com/chinese/charmap/tblgbk.php?page=0
+ 'gb18030': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp936.json').concat(require('./tables/gbk-added.json')) },
+ gb18030: function() { return require('./tables/gb18030-ranges.json') },
+ encodeSkipVals: [0x80],
+ encodeAdd: {'€': 0xA2E3},
+ },
+
+ 'chinese': 'gb18030',
+
+
+ // == Korean ===============================================================
+ // EUC-KR, KS_C_5601 and KS X 1001 are exactly the same.
+ 'windows949': 'cp949',
+ 'ms949': 'cp949',
+ '949': 'cp949',
+ 'cp949': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp949.json') },
+ },
+
+ 'cseuckr': 'cp949',
+ 'csksc56011987': 'cp949',
+ 'euckr': 'cp949',
+ 'isoir149': 'cp949',
+ 'korean': 'cp949',
+ 'ksc56011987': 'cp949',
+ 'ksc56011989': 'cp949',
+ 'ksc5601': 'cp949',
+
+
+ // == Big5/Taiwan/Hong Kong ================================================
+ // There are lots of tables for Big5 and cp950. Please see the following links for history:
+ // http://moztw.org/docs/big5/ http://www.haible.de/bruno/charsets/conversion-tables/Big5.html
+ // Variations, in roughly number of defined chars:
+ // * Windows CP 950: Microsoft variant of Big5. Canonical: http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP950.TXT
+ // * Windows CP 951: Microsoft variant of Big5-HKSCS-2001. Seems to be never public. http://me.abelcheung.org/articles/research/what-is-cp951/
+ // * Big5-2003 (Taiwan standard) almost superset of cp950.
+ // * Unicode-at-on (UAO) / Mozilla 1.8. Falling out of use on the Web. Not supported by other browsers.
+ // * Big5-HKSCS (-2001, -2004, -2008). Hong Kong standard.
+ // many unicode code points moved from PUA to Supplementary plane (U+2XXXX) over the years.
+ // Plus, it has 4 combining sequences.
+ // Seems that Mozilla refused to support it for 10 yrs. https://bugzilla.mozilla.org/show_bug.cgi?id=162431 https://bugzilla.mozilla.org/show_bug.cgi?id=310299
+ // because big5-hkscs is the only encoding to include astral characters in non-algorithmic way.
+ // Implementations are not consistent within browsers; sometimes labeled as just big5.
+ // MS Internet Explorer switches from big5 to big5-hkscs when a patch applied.
+ // Great discussion & recap of what's going on https://bugzilla.mozilla.org/show_bug.cgi?id=912470#c31
+ // In the encoder, it might make sense to support encoding old PUA mappings to Big5 bytes seq-s.
+ // Official spec: http://www.ogcio.gov.hk/en/business/tech_promotion/ccli/terms/doc/2003cmp_2008.txt
+ // http://www.ogcio.gov.hk/tc/business/tech_promotion/ccli/terms/doc/hkscs-2008-big5-iso.txt
+ //
+ // Current understanding of how to deal with Big5(-HKSCS) is in the Encoding Standard, http://encoding.spec.whatwg.org/#big5-encoder
+ // Unicode mapping (http://www.unicode.org/Public/MAPPINGS/OBSOLETE/EASTASIA/OTHER/BIG5.TXT) is said to be wrong.
+
+ 'windows950': 'cp950',
+ 'ms950': 'cp950',
+ '950': 'cp950',
+ 'cp950': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp950.json') },
+ },
+
+ // Big5 has many variations and is an extension of cp950. We use Encoding Standard's as a consensus.
+ 'big5': 'big5hkscs',
+ 'big5hkscs': {
+ type: '_dbcs',
+ table: function() { return require('./tables/cp950.json').concat(require('./tables/big5-added.json')) },
+ encodeSkipVals: [
+ // Although Encoding Standard says we should avoid encoding to HKSCS area (See Step 1 of
+ // https://encoding.spec.whatwg.org/#index-big5-pointer), we still do it to increase compatibility with ICU.
+ // But if a single unicode point can be encoded both as HKSCS and regular Big5, we prefer the latter.
+ 0x8e69, 0x8e6f, 0x8e7e, 0x8eab, 0x8eb4, 0x8ecd, 0x8ed0, 0x8f57, 0x8f69, 0x8f6e, 0x8fcb, 0x8ffe,
+ 0x906d, 0x907a, 0x90c4, 0x90dc, 0x90f1, 0x91bf, 0x92af, 0x92b0, 0x92b1, 0x92b2, 0x92d1, 0x9447, 0x94ca,
+ 0x95d9, 0x96fc, 0x9975, 0x9b76, 0x9b78, 0x9b7b, 0x9bc6, 0x9bde, 0x9bec, 0x9bf6, 0x9c42, 0x9c53, 0x9c62,
+ 0x9c68, 0x9c6b, 0x9c77, 0x9cbc, 0x9cbd, 0x9cd0, 0x9d57, 0x9d5a, 0x9dc4, 0x9def, 0x9dfb, 0x9ea9, 0x9eef,
+ 0x9efd, 0x9f60, 0x9fcb, 0xa077, 0xa0dc, 0xa0df, 0x8fcc, 0x92c8, 0x9644, 0x96ed,
+
+ // Step 2 of https://encoding.spec.whatwg.org/#index-big5-pointer: Use last pointer for U+2550, U+255E, U+2561, U+256A, U+5341, or U+5345
+ 0xa2a4, 0xa2a5, 0xa2a7, 0xa2a6, 0xa2cc, 0xa2ce,
+ ],
+ },
+
+ 'cnbig5': 'big5hkscs',
+ 'csbig5': 'big5hkscs',
+ 'xxbig5': 'big5hkscs',
+};
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/index.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/index.js
new file mode 100644
index 00000000..d95c2441
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/index.js
@@ -0,0 +1,23 @@
+"use strict";
+
+// Update this array if you add/rename/remove files in this directory.
+// We support Browserify by skipping automatic module discovery and requiring modules directly.
+var modules = [
+ require("./internal"),
+ require("./utf32"),
+ require("./utf16"),
+ require("./utf7"),
+ require("./sbcs-codec"),
+ require("./sbcs-data"),
+ require("./sbcs-data-generated"),
+ require("./dbcs-codec"),
+ require("./dbcs-data"),
+];
+
+// Put all encoding/alias/codec definitions to single object and export it.
+for (var i = 0; i < modules.length; i++) {
+ var module = modules[i];
+ for (var enc in module)
+ if (Object.prototype.hasOwnProperty.call(module, enc))
+ exports[enc] = module[enc];
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/internal.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/internal.js
new file mode 100644
index 00000000..dc1074f0
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/internal.js
@@ -0,0 +1,198 @@
+"use strict";
+var Buffer = require("safer-buffer").Buffer;
+
+// Export Node.js internal encodings.
+
+module.exports = {
+ // Encodings
+ utf8: { type: "_internal", bomAware: true},
+ cesu8: { type: "_internal", bomAware: true},
+ unicode11utf8: "utf8",
+
+ ucs2: { type: "_internal", bomAware: true},
+ utf16le: "ucs2",
+
+ binary: { type: "_internal" },
+ base64: { type: "_internal" },
+ hex: { type: "_internal" },
+
+ // Codec.
+ _internal: InternalCodec,
+};
+
+//------------------------------------------------------------------------------
+
+function InternalCodec(codecOptions, iconv) {
+ this.enc = codecOptions.encodingName;
+ this.bomAware = codecOptions.bomAware;
+
+ if (this.enc === "base64")
+ this.encoder = InternalEncoderBase64;
+ else if (this.enc === "cesu8") {
+ this.enc = "utf8"; // Use utf8 for decoding.
+ this.encoder = InternalEncoderCesu8;
+
+ // Add decoder for versions of Node not supporting CESU-8
+ if (Buffer.from('eda0bdedb2a9', 'hex').toString() !== '💩') {
+ this.decoder = InternalDecoderCesu8;
+ this.defaultCharUnicode = iconv.defaultCharUnicode;
+ }
+ }
+}
+
+InternalCodec.prototype.encoder = InternalEncoder;
+InternalCodec.prototype.decoder = InternalDecoder;
+
+//------------------------------------------------------------------------------
+
+// We use node.js internal decoder. Its signature is the same as ours.
+var StringDecoder = require('string_decoder').StringDecoder;
+
+if (!StringDecoder.prototype.end) // Node v0.8 doesn't have this method.
+ StringDecoder.prototype.end = function() {};
+
+
+function InternalDecoder(options, codec) {
+ this.decoder = new StringDecoder(codec.enc);
+}
+
+InternalDecoder.prototype.write = function(buf) {
+ if (!Buffer.isBuffer(buf)) {
+ buf = Buffer.from(buf);
+ }
+
+ return this.decoder.write(buf);
+}
+
+InternalDecoder.prototype.end = function() {
+ return this.decoder.end();
+}
+
+
+//------------------------------------------------------------------------------
+// Encoder is mostly trivial
+
+function InternalEncoder(options, codec) {
+ this.enc = codec.enc;
+}
+
+InternalEncoder.prototype.write = function(str) {
+ return Buffer.from(str, this.enc);
+}
+
+InternalEncoder.prototype.end = function() {
+}
+
+
+//------------------------------------------------------------------------------
+// Except base64 encoder, which must keep its state.
+
+function InternalEncoderBase64(options, codec) {
+ this.prevStr = '';
+}
+
+InternalEncoderBase64.prototype.write = function(str) {
+ str = this.prevStr + str;
+ var completeQuads = str.length - (str.length % 4);
+ this.prevStr = str.slice(completeQuads);
+ str = str.slice(0, completeQuads);
+
+ return Buffer.from(str, "base64");
+}
+
+InternalEncoderBase64.prototype.end = function() {
+ return Buffer.from(this.prevStr, "base64");
+}
+
+
+//------------------------------------------------------------------------------
+// CESU-8 encoder is also special.
+
+function InternalEncoderCesu8(options, codec) {
+}
+
+InternalEncoderCesu8.prototype.write = function(str) {
+ var buf = Buffer.alloc(str.length * 3), bufIdx = 0;
+ for (var i = 0; i < str.length; i++) {
+ var charCode = str.charCodeAt(i);
+ // Naive implementation, but it works because CESU-8 is especially easy
+ // to convert from UTF-16 (which all JS strings are encoded in).
+ if (charCode < 0x80)
+ buf[bufIdx++] = charCode;
+ else if (charCode < 0x800) {
+ buf[bufIdx++] = 0xC0 + (charCode >>> 6);
+ buf[bufIdx++] = 0x80 + (charCode & 0x3f);
+ }
+ else { // charCode will always be < 0x10000 in javascript.
+ buf[bufIdx++] = 0xE0 + (charCode >>> 12);
+ buf[bufIdx++] = 0x80 + ((charCode >>> 6) & 0x3f);
+ buf[bufIdx++] = 0x80 + (charCode & 0x3f);
+ }
+ }
+ return buf.slice(0, bufIdx);
+}
+
+InternalEncoderCesu8.prototype.end = function() {
+}
+
+//------------------------------------------------------------------------------
+// CESU-8 decoder is not implemented in Node v4.0+
+
+function InternalDecoderCesu8(options, codec) {
+ this.acc = 0;
+ this.contBytes = 0;
+ this.accBytes = 0;
+ this.defaultCharUnicode = codec.defaultCharUnicode;
+}
+
+InternalDecoderCesu8.prototype.write = function(buf) {
+ var acc = this.acc, contBytes = this.contBytes, accBytes = this.accBytes,
+ res = '';
+ for (var i = 0; i < buf.length; i++) {
+ var curByte = buf[i];
+ if ((curByte & 0xC0) !== 0x80) { // Leading byte
+ if (contBytes > 0) { // Previous code is invalid
+ res += this.defaultCharUnicode;
+ contBytes = 0;
+ }
+
+ if (curByte < 0x80) { // Single-byte code
+ res += String.fromCharCode(curByte);
+ } else if (curByte < 0xE0) { // Two-byte code
+ acc = curByte & 0x1F;
+ contBytes = 1; accBytes = 1;
+ } else if (curByte < 0xF0) { // Three-byte code
+ acc = curByte & 0x0F;
+ contBytes = 2; accBytes = 1;
+ } else { // Four or more are not supported for CESU-8.
+ res += this.defaultCharUnicode;
+ }
+ } else { // Continuation byte
+ if (contBytes > 0) { // We're waiting for it.
+ acc = (acc << 6) | (curByte & 0x3f);
+ contBytes--; accBytes++;
+ if (contBytes === 0) {
+ // Check for overlong encoding, but support Modified UTF-8 (encoding NULL as C0 80)
+ if (accBytes === 2 && acc < 0x80 && acc > 0)
+ res += this.defaultCharUnicode;
+ else if (accBytes === 3 && acc < 0x800)
+ res += this.defaultCharUnicode;
+ else
+ // Actually add character.
+ res += String.fromCharCode(acc);
+ }
+ } else { // Unexpected continuation byte
+ res += this.defaultCharUnicode;
+ }
+ }
+ }
+ this.acc = acc; this.contBytes = contBytes; this.accBytes = accBytes;
+ return res;
+}
+
+InternalDecoderCesu8.prototype.end = function() {
+ var res = 0;
+ if (this.contBytes > 0)
+ res += this.defaultCharUnicode;
+ return res;
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-codec.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-codec.js
new file mode 100644
index 00000000..abac5ffa
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-codec.js
@@ -0,0 +1,72 @@
+"use strict";
+var Buffer = require("safer-buffer").Buffer;
+
+// Single-byte codec. Needs a 'chars' string parameter that contains 256 or 128 chars that
+// correspond to encoded bytes (if 128 - then lower half is ASCII).
+
+exports._sbcs = SBCSCodec;
+function SBCSCodec(codecOptions, iconv) {
+ if (!codecOptions)
+ throw new Error("SBCS codec is called without the data.")
+
+ // Prepare char buffer for decoding.
+ if (!codecOptions.chars || (codecOptions.chars.length !== 128 && codecOptions.chars.length !== 256))
+ throw new Error("Encoding '"+codecOptions.type+"' has incorrect 'chars' (must be of len 128 or 256)");
+
+ if (codecOptions.chars.length === 128) {
+ var asciiString = "";
+ for (var i = 0; i < 128; i++)
+ asciiString += String.fromCharCode(i);
+ codecOptions.chars = asciiString + codecOptions.chars;
+ }
+
+ this.decodeBuf = Buffer.from(codecOptions.chars, 'ucs2');
+
+ // Encoding buffer.
+ var encodeBuf = Buffer.alloc(65536, iconv.defaultCharSingleByte.charCodeAt(0));
+
+ for (var i = 0; i < codecOptions.chars.length; i++)
+ encodeBuf[codecOptions.chars.charCodeAt(i)] = i;
+
+ this.encodeBuf = encodeBuf;
+}
+
+SBCSCodec.prototype.encoder = SBCSEncoder;
+SBCSCodec.prototype.decoder = SBCSDecoder;
+
+
+function SBCSEncoder(options, codec) {
+ this.encodeBuf = codec.encodeBuf;
+}
+
+SBCSEncoder.prototype.write = function(str) {
+ var buf = Buffer.alloc(str.length);
+ for (var i = 0; i < str.length; i++)
+ buf[i] = this.encodeBuf[str.charCodeAt(i)];
+
+ return buf;
+}
+
+SBCSEncoder.prototype.end = function() {
+}
+
+
+function SBCSDecoder(options, codec) {
+ this.decodeBuf = codec.decodeBuf;
+}
+
+SBCSDecoder.prototype.write = function(buf) {
+ // Strings are immutable in JS -> we use ucs2 buffer to speed up computations.
+ var decodeBuf = this.decodeBuf;
+ var newBuf = Buffer.alloc(buf.length*2);
+ var idx1 = 0, idx2 = 0;
+ for (var i = 0; i < buf.length; i++) {
+ idx1 = buf[i]*2; idx2 = i*2;
+ newBuf[idx2] = decodeBuf[idx1];
+ newBuf[idx2+1] = decodeBuf[idx1+1];
+ }
+ return newBuf.toString('ucs2');
+}
+
+SBCSDecoder.prototype.end = function() {
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data-generated.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data-generated.js
new file mode 100644
index 00000000..9b482360
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data-generated.js
@@ -0,0 +1,451 @@
+"use strict";
+
+// Generated data for sbcs codec. Don't edit manually. Regenerate using generation/gen-sbcs.js script.
+module.exports = {
+ "437": "cp437",
+ "737": "cp737",
+ "775": "cp775",
+ "850": "cp850",
+ "852": "cp852",
+ "855": "cp855",
+ "856": "cp856",
+ "857": "cp857",
+ "858": "cp858",
+ "860": "cp860",
+ "861": "cp861",
+ "862": "cp862",
+ "863": "cp863",
+ "864": "cp864",
+ "865": "cp865",
+ "866": "cp866",
+ "869": "cp869",
+ "874": "windows874",
+ "922": "cp922",
+ "1046": "cp1046",
+ "1124": "cp1124",
+ "1125": "cp1125",
+ "1129": "cp1129",
+ "1133": "cp1133",
+ "1161": "cp1161",
+ "1162": "cp1162",
+ "1163": "cp1163",
+ "1250": "windows1250",
+ "1251": "windows1251",
+ "1252": "windows1252",
+ "1253": "windows1253",
+ "1254": "windows1254",
+ "1255": "windows1255",
+ "1256": "windows1256",
+ "1257": "windows1257",
+ "1258": "windows1258",
+ "28591": "iso88591",
+ "28592": "iso88592",
+ "28593": "iso88593",
+ "28594": "iso88594",
+ "28595": "iso88595",
+ "28596": "iso88596",
+ "28597": "iso88597",
+ "28598": "iso88598",
+ "28599": "iso88599",
+ "28600": "iso885910",
+ "28601": "iso885911",
+ "28603": "iso885913",
+ "28604": "iso885914",
+ "28605": "iso885915",
+ "28606": "iso885916",
+ "windows874": {
+ "type": "_sbcs",
+ "chars": "€����…�����������‘’“”•–—�������� กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
+ },
+ "win874": "windows874",
+ "cp874": "windows874",
+ "windows1250": {
+ "type": "_sbcs",
+ "chars": "€�‚�„…†‡�‰Š‹ŚŤŽŹ�‘’“”•–—�™š›śťžź ˇ˘Ł¤Ą¦§¨©Ş«¬®Ż°±˛ł´µ¶·¸ąş»Ľ˝ľżŔÁÂĂÄĹĆÇČÉĘËĚÍÎĎĐŃŇÓÔŐÖ×ŘŮÚŰÜÝŢßŕáâăäĺćçčéęëěíîďđńňóôőö÷řůúűüýţ˙"
+ },
+ "win1250": "windows1250",
+ "cp1250": "windows1250",
+ "windows1251": {
+ "type": "_sbcs",
+ "chars": "ЂЃ‚ѓ„…†‡€‰Љ‹ЊЌЋЏђ‘’“”•–—�™љ›њќћџ ЎўЈ¤Ґ¦§Ё©Є«¬®Ї°±Ііґµ¶·ё№є»јЅѕїАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
+ },
+ "win1251": "windows1251",
+ "cp1251": "windows1251",
+ "windows1252": {
+ "type": "_sbcs",
+ "chars": "€�‚ƒ„…†‡ˆ‰Š‹Œ�Ž��‘’“”•–—˜™š›œ�žŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
+ },
+ "win1252": "windows1252",
+ "cp1252": "windows1252",
+ "windows1253": {
+ "type": "_sbcs",
+ "chars": "€�‚ƒ„…†‡�‰�‹�����‘’“”•–—�™�›���� ΅Ά£¤¥¦§¨©�«¬®―°±²³΄µ¶·ΈΉΊ»Ό½ΎΏΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ�ΣΤΥΦΧΨΩΪΫάέήίΰαβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ�"
+ },
+ "win1253": "windows1253",
+ "cp1253": "windows1253",
+ "windows1254": {
+ "type": "_sbcs",
+ "chars": "€�‚ƒ„…†‡ˆ‰Š‹Œ����‘’“”•–—˜™š›œ��Ÿ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏĞÑÒÓÔÕÖ×ØÙÚÛÜİŞßàáâãäåæçèéêëìíîïğñòóôõö÷øùúûüışÿ"
+ },
+ "win1254": "windows1254",
+ "cp1254": "windows1254",
+ "windows1255": {
+ "type": "_sbcs",
+ "chars": "€�‚ƒ„…†‡ˆ‰�‹�����‘’“”•–—˜™�›���� ¡¢£₪¥¦§¨©×«¬®¯°±²³´µ¶·¸¹÷»¼½¾¿ְֱֲֳִֵֶַָֹֺֻּֽ־ֿ׀ׁׂ׃װױײ׳״�������אבגדהוזחטיךכלםמןנסעףפץצקרשת���"
+ },
+ "win1255": "windows1255",
+ "cp1255": "windows1255",
+ "windows1256": {
+ "type": "_sbcs",
+ "chars": "€پ‚ƒ„…†‡ˆ‰ٹ‹Œچژڈگ‘’“”•–—ک™ڑ›œں ،¢£¤¥¦§¨©ھ«¬®¯°±²³´µ¶·¸¹؛»¼½¾؟ہءآأؤإئابةتثجحخدذرزسشصض×طظعغـفقكàلâمنهوçèéêëىيîïًٌٍَôُِ÷ّùْûüے"
+ },
+ "win1256": "windows1256",
+ "cp1256": "windows1256",
+ "windows1257": {
+ "type": "_sbcs",
+ "chars": "€�‚�„…†‡�‰�‹�¨ˇ¸�‘’“”•–—�™�›�¯˛� �¢£¤�¦§Ø©Ŗ«¬®Æ°±²³´µ¶·ø¹ŗ»¼½¾æĄĮĀĆÄÅĘĒČÉŹĖĢĶĪĻŠŃŅÓŌÕÖ×ŲŁŚŪÜŻŽßąįāćäåęēčéźėģķīļšńņóōõö÷ųłśūüżž˙"
+ },
+ "win1257": "windows1257",
+ "cp1257": "windows1257",
+ "windows1258": {
+ "type": "_sbcs",
+ "chars": "€�‚ƒ„…†‡ˆ‰�‹Œ����‘’“”•–—˜™�›œ��Ÿ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
+ },
+ "win1258": "windows1258",
+ "cp1258": "windows1258",
+ "iso88591": {
+ "type": "_sbcs",
+ "chars": "
¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
+ },
+ "cp28591": "iso88591",
+ "iso88592": {
+ "type": "_sbcs",
+ "chars": "
Ą˘Ł¤ĽŚ§¨ŠŞŤŹŽŻ°ą˛ł´ľśˇ¸šşťź˝žżŔÁÂĂÄĹĆÇČÉĘËĚÍÎĎĐŃŇÓÔŐÖ×ŘŮÚŰÜÝŢßŕáâăäĺćçčéęëěíîďđńňóôőö÷řůúűüýţ˙"
+ },
+ "cp28592": "iso88592",
+ "iso88593": {
+ "type": "_sbcs",
+ "chars": "
Ħ˘£¤�Ĥ§¨İŞĞĴ�Ż°ħ²³´µĥ·¸ışğĵ½�żÀÁÂ�ÄĊĈÇÈÉÊËÌÍÎÏ�ÑÒÓÔĠÖ×ĜÙÚÛÜŬŜßàáâ�äċĉçèéêëìíîï�ñòóôġö÷ĝùúûüŭŝ˙"
+ },
+ "cp28593": "iso88593",
+ "iso88594": {
+ "type": "_sbcs",
+ "chars": "
ĄĸŖ¤ĨĻ§¨ŠĒĢŦŽ¯°ą˛ŗ´ĩļˇ¸šēģŧŊžŋĀÁÂÃÄÅÆĮČÉĘËĖÍÎĪĐŅŌĶÔÕÖ×ØŲÚÛÜŨŪßāáâãäåæįčéęëėíîīđņōķôõö÷øųúûüũū˙"
+ },
+ "cp28594": "iso88594",
+ "iso88595": {
+ "type": "_sbcs",
+ "chars": "
ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя№ёђѓєѕіїјљњћќ§ўџ"
+ },
+ "cp28595": "iso88595",
+ "iso88596": {
+ "type": "_sbcs",
+ "chars": "
���¤�������،�������������؛���؟�ءآأؤإئابةتثجحخدذرزسشصضطظعغ�����ـفقكلمنهوىيًٌٍَُِّْ�������������"
+ },
+ "cp28596": "iso88596",
+ "iso88597": {
+ "type": "_sbcs",
+ "chars": "
‘’£€₯¦§¨©ͺ«¬�―°±²³΄΅Ά·ΈΉΊ»Ό½ΎΏΐΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡ�ΣΤΥΦΧΨΩΪΫάέήίΰαβγδεζηθικλμνξοπρςστυφχψωϊϋόύώ�"
+ },
+ "cp28597": "iso88597",
+ "iso88598": {
+ "type": "_sbcs",
+ "chars": "
�¢£¤¥¦§¨©×«¬®¯°±²³´µ¶·¸¹÷»¼½¾��������������������������������‗אבגדהוזחטיךכלםמןנסעףפץצקרשת���"
+ },
+ "cp28598": "iso88598",
+ "iso88599": {
+ "type": "_sbcs",
+ "chars": "
¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏĞÑÒÓÔÕÖ×ØÙÚÛÜİŞßàáâãäåæçèéêëìíîïğñòóôõö÷øùúûüışÿ"
+ },
+ "cp28599": "iso88599",
+ "iso885910": {
+ "type": "_sbcs",
+ "chars": "
ĄĒĢĪĨĶ§ĻĐŠŦŽŪŊ°ąēģīĩķ·ļđšŧž―ūŋĀÁÂÃÄÅÆĮČÉĘËĖÍÎÏÐŅŌÓÔÕÖŨØŲÚÛÜÝÞßāáâãäåæįčéęëėíîïðņōóôõöũøųúûüýþĸ"
+ },
+ "cp28600": "iso885910",
+ "iso885911": {
+ "type": "_sbcs",
+ "chars": "
กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
+ },
+ "cp28601": "iso885911",
+ "iso885913": {
+ "type": "_sbcs",
+ "chars": "
”¢£¤„¦§Ø©Ŗ«¬®Æ°±²³“µ¶·ø¹ŗ»¼½¾æĄĮĀĆÄÅĘĒČÉŹĖĢĶĪĻŠŃŅÓŌÕÖ×ŲŁŚŪÜŻŽßąįāćäåęēčéźėģķīļšńņóōõö÷ųłśūüżž’"
+ },
+ "cp28603": "iso885913",
+ "iso885914": {
+ "type": "_sbcs",
+ "chars": "
Ḃḃ£ĊċḊ§Ẁ©ẂḋỲ®ŸḞḟĠġṀṁ¶ṖẁṗẃṠỳẄẅṡÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏŴÑÒÓÔÕÖṪØÙÚÛÜÝŶßàáâãäåæçèéêëìíîïŵñòóôõöṫøùúûüýŷÿ"
+ },
+ "cp28604": "iso885914",
+ "iso885915": {
+ "type": "_sbcs",
+ "chars": "
¡¢£€¥Š§š©ª«¬®¯°±²³Žµ¶·ž¹º»ŒœŸ¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
+ },
+ "cp28605": "iso885915",
+ "iso885916": {
+ "type": "_sbcs",
+ "chars": "
ĄąŁ€„Š§š©Ș«ŹźŻ°±ČłŽ”¶·žčș»ŒœŸżÀÁÂĂÄĆÆÇÈÉÊËÌÍÎÏĐŃÒÓÔŐÖŚŰÙÚÛÜĘȚßàáâăäćæçèéêëìíîïđńòóôőöśűùúûüęțÿ"
+ },
+ "cp28606": "iso885916",
+ "cp437": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm437": "cp437",
+ "csibm437": "cp437",
+ "cp737": {
+ "type": "_sbcs",
+ "chars": "ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩαβγδεζηθικλμνξοπρσςτυφχψ░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀ωάέήϊίόύϋώΆΈΉΊΌΎΏ±≥≤ΪΫ÷≈°∙·√ⁿ²■ "
+ },
+ "ibm737": "cp737",
+ "csibm737": "cp737",
+ "cp775": {
+ "type": "_sbcs",
+ "chars": "ĆüéāäģåćłēŖŗīŹÄÅÉæÆōöĢ¢ŚśÖÜø£ØפĀĪóŻżź”¦©®¬½¼Ł«»░▒▓│┤ĄČĘĖ╣║╗╝ĮŠ┐└┴┬├─┼ŲŪ╚╔╩╦╠═╬Žąčęėįšųūž┘┌█▄▌▐▀ÓßŌŃõÕµńĶķĻļņĒŅ’±“¾¶§÷„°∙·¹³²■ "
+ },
+ "ibm775": "cp775",
+ "csibm775": "cp775",
+ "cp850": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø׃áíóúñѪº¿®¬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ðÐÊËÈıÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµþÞÚÛÙýݯ´±‗¾¶§÷¸°¨·¹³²■ "
+ },
+ "ibm850": "cp850",
+ "csibm850": "cp850",
+ "cp852": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäůćçłëŐőîŹÄĆÉĹĺôöĽľŚśÖÜŤťŁ×čáíóúĄąŽžĘ꬟Ⱥ«»░▒▓│┤ÁÂĚŞ╣║╗╝Żż┐└┴┬├─┼Ăă╚╔╩╦╠═╬¤đĐĎËďŇÍÎě┘┌█▄ŢŮ▀ÓßÔŃńňŠšŔÚŕŰýÝţ´˝˛ˇ˘§÷¸°¨˙űŘř■ "
+ },
+ "ibm852": "cp852",
+ "csibm852": "cp852",
+ "cp855": {
+ "type": "_sbcs",
+ "chars": "ђЂѓЃёЁєЄѕЅіІїЇјЈљЉњЊћЋќЌўЎџЏюЮъЪаАбБцЦдДеЕфФгГ«»░▒▓│┤хХиИ╣║╗╝йЙ┐└┴┬├─┼кК╚╔╩╦╠═╬¤лЛмМнНоОп┘┌█▄Пя▀ЯрРсСтТуУжЖвВьЬ№ыЫзЗшШэЭщЩчЧ§■ "
+ },
+ "ibm855": "cp855",
+ "csibm855": "cp855",
+ "cp856": {
+ "type": "_sbcs",
+ "chars": "אבגדהוזחטיךכלםמןנסעףפץצקרשת�£�×����������®¬½¼�«»░▒▓│┤���©╣║╗╝¢¥┐└┴┬├─┼��╚╔╩╦╠═╬¤���������┘┌█▄¦�▀������µ�������¯´±‗¾¶§÷¸°¨·¹³²■ "
+ },
+ "ibm856": "cp856",
+ "csibm856": "cp856",
+ "cp857": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèïîıÄÅÉæÆôöòûùİÖÜø£ØŞşáíóúñÑĞ𿮬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ºªÊËÈ�ÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµ�×ÚÛÙìÿ¯´±�¾¶§÷¸°¨·¹³²■ "
+ },
+ "ibm857": "cp857",
+ "csibm857": "cp857",
+ "cp858": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø׃áíóúñѪº¿®¬½¼¡«»░▒▓│┤ÁÂÀ©╣║╗╝¢¥┐└┴┬├─┼ãÃ╚╔╩╦╠═╬¤ðÐÊËÈ€ÍÎÏ┘┌█▄¦Ì▀ÓßÔÒõÕµþÞÚÛÙýݯ´±‗¾¶§÷¸°¨·¹³²■ "
+ },
+ "ibm858": "cp858",
+ "csibm858": "cp858",
+ "cp860": {
+ "type": "_sbcs",
+ "chars": "ÇüéâãàÁçêÊèÍÔìÃÂÉÀÈôõòÚùÌÕÜ¢£Ù₧ÓáíóúñѪº¿Ò¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm860": "cp860",
+ "csibm860": "cp860",
+ "cp861": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèÐðÞÄÅÉæÆôöþûÝýÖÜø£Ø₧ƒáíóúÁÍÓÚ¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm861": "cp861",
+ "csibm861": "cp861",
+ "cp862": {
+ "type": "_sbcs",
+ "chars": "אבגדהוזחטיךכלםמןנסעףפץצקרשת¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm862": "cp862",
+ "csibm862": "cp862",
+ "cp863": {
+ "type": "_sbcs",
+ "chars": "ÇüéâÂà¶çêëèïî‗À§ÉÈÊôËÏûù¤ÔÜ¢£ÙÛƒ¦´óú¨¸³¯Î⌐¬½¼¾«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm863": "cp863",
+ "csibm863": "cp863",
+ "cp864": {
+ "type": "_sbcs",
+ "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$٪&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~°·∙√▒─│┼┤┬├┴┐┌└┘β∞φ±½¼≈«»ﻷﻸ��ﻻﻼ� ﺂ£¤ﺄ��ﺎﺏﺕﺙ،ﺝﺡﺥ٠١٢٣٤٥٦٧٨٩ﻑ؛ﺱﺵﺹ؟¢ﺀﺁﺃﺅﻊﺋﺍﺑﺓﺗﺛﺟﺣﺧﺩﺫﺭﺯﺳﺷﺻﺿﻁﻅﻋﻏ¦¬÷×ﻉـﻓﻗﻛﻟﻣﻧﻫﻭﻯﻳﺽﻌﻎﻍﻡﹽّﻥﻩﻬﻰﻲﻐﻕﻵﻶﻝﻙﻱ■�"
+ },
+ "ibm864": "cp864",
+ "csibm864": "cp864",
+ "cp865": {
+ "type": "_sbcs",
+ "chars": "ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜø£Ø₧ƒáíóúñѪº¿⌐¬½¼¡«¤░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+ "ibm865": "cp865",
+ "csibm865": "cp865",
+ "cp866": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёЄєЇїЎў°∙·√№¤■ "
+ },
+ "ibm866": "cp866",
+ "csibm866": "cp866",
+ "cp869": {
+ "type": "_sbcs",
+ "chars": "������Ά�·¬¦‘’Έ―ΉΊΪΌ��ΎΫ©Ώ²³ά£έήίϊΐόύΑΒΓΔΕΖΗ½ΘΙ«»░▒▓│┤ΚΛΜΝ╣║╗╝ΞΟ┐└┴┬├─┼ΠΡ╚╔╩╦╠═╬ΣΤΥΦΧΨΩαβγ┘┌█▄δε▀ζηθικλμνξοπρσςτ΄±υφχ§ψ΅°¨ωϋΰώ■ "
+ },
+ "ibm869": "cp869",
+ "csibm869": "cp869",
+ "cp922": {
+ "type": "_sbcs",
+ "chars": "
¡¢£¤¥¦§¨©ª«¬®‾°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏŠÑÒÓÔÕÖ×ØÙÚÛÜÝŽßàáâãäåæçèéêëìíîïšñòóôõö÷øùúûüýžÿ"
+ },
+ "ibm922": "cp922",
+ "csibm922": "cp922",
+ "cp1046": {
+ "type": "_sbcs",
+ "chars": "ﺈ×÷ﹱ■│─┐┌└┘ﹹﹻﹽﹿﹷﺊﻰﻳﻲﻎﻏﻐﻶﻸﻺﻼ ¤ﺋﺑﺗﺛﺟﺣ،ﺧﺳ٠١٢٣٤٥٦٧٨٩ﺷ؛ﺻﺿﻊ؟ﻋءآأؤإئابةتثجحخدذرزسشصضطﻇعغﻌﺂﺄﺎﻓـفقكلمنهوىيًٌٍَُِّْﻗﻛﻟﻵﻷﻹﻻﻣﻧﻬﻩ�"
+ },
+ "ibm1046": "cp1046",
+ "csibm1046": "cp1046",
+ "cp1124": {
+ "type": "_sbcs",
+ "chars": "
ЁЂҐЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя№ёђґєѕіїјљњћќ§ўџ"
+ },
+ "ibm1124": "cp1124",
+ "csibm1124": "cp1124",
+ "cp1125": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёҐґЄєІіЇї·√№¤■ "
+ },
+ "ibm1125": "cp1125",
+ "csibm1125": "cp1125",
+ "cp1129": {
+ "type": "_sbcs",
+ "chars": "
¡¢£¤¥¦§œ©ª«¬®¯°±²³Ÿµ¶·Œ¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
+ },
+ "ibm1129": "cp1129",
+ "csibm1129": "cp1129",
+ "cp1133": {
+ "type": "_sbcs",
+ "chars": "
ກຂຄງຈສຊຍດຕຖທນບປຜຝພຟມຢຣລວຫອຮ���ຯະາຳິີຶືຸູຼັົຽ���ເແໂໃໄ່້໊໋໌ໍໆ�ໜໝ₭����������������໐໑໒໓໔໕໖໗໘໙��¢¬¦�"
+ },
+ "ibm1133": "cp1133",
+ "csibm1133": "cp1133",
+ "cp1161": {
+ "type": "_sbcs",
+ "chars": "��������������������������������่กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู้๊๋€฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛¢¬¦ "
+ },
+ "ibm1161": "cp1161",
+ "csibm1161": "cp1161",
+ "cp1162": {
+ "type": "_sbcs",
+ "chars": "€…‘’“”•–— กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
+ },
+ "ibm1162": "cp1162",
+ "csibm1162": "cp1162",
+ "cp1163": {
+ "type": "_sbcs",
+ "chars": "
¡¢£€¥¦§œ©ª«¬®¯°±²³Ÿµ¶·Œ¹º»¼½¾¿ÀÁÂĂÄÅÆÇÈÉÊË̀ÍÎÏĐÑ̉ÓÔƠÖ×ØÙÚÛÜỮßàáâăäåæçèéêë́íîïđṇ̃óôơö÷øùúûüư₫ÿ"
+ },
+ "ibm1163": "cp1163",
+ "csibm1163": "cp1163",
+ "maccroatian": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®Š™´¨≠ŽØ∞±≤≥∆µ∂∑∏š∫ªºΩžø¿¡¬√ƒ≈Ć«Č… ÀÃÕŒœĐ—“”‘’÷◊�©⁄¤‹›Æ»–·‚„‰ÂćÁčÈÍÎÏÌÓÔđÒÚÛÙıˆ˜¯πË˚¸Êæˇ"
+ },
+ "maccyrillic": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ†°¢£§•¶І®©™Ђђ≠Ѓѓ∞±≤≥іµ∂ЈЄєЇїЉљЊњјЅ¬√ƒ≈∆«»… ЋћЌќѕ–—“”‘’÷„ЎўЏџ№Ёёяабвгдежзийклмнопрстуфхцчшщъыьэю¤"
+ },
+ "macgreek": {
+ "type": "_sbcs",
+ "chars": "Ĺ²É³ÖÜ΅àâä΄¨çéèê룙î‰ôö¦ùûü†ΓΔΘΛΞΠß®©ΣΪ§≠°·Α±≤≥¥ΒΕΖΗΙΚΜΦΫΨΩάΝ¬ΟΡ≈Τ«»… ΥΧΆΈœ–―“”‘’÷ΉΊΌΎέήίόΏύαβψδεφγηιξκλμνοπώρστθωςχυζϊϋΐΰ�"
+ },
+ "maciceland": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûüÝ°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤ÐðÞþý·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
+ },
+ "macroman": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›fifl‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
+ },
+ "macromania": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ĂŞ∞±≤≥¥µ∂∑∏π∫ªºΩăş¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›Ţţ‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
+ },
+ "macthai": {
+ "type": "_sbcs",
+ "chars": "«»…“”�•‘’� กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู–—฿เแโใไๅๆ็่้๊๋์ํ™๏๐๑๒๓๔๕๖๗๘๙®©����"
+ },
+ "macturkish": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸĞğİıŞş‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙ�ˆ˜¯˘˙˚¸˝˛ˇ"
+ },
+ "macukraine": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ†°Ґ£§•¶І®©™Ђђ≠Ѓѓ∞±≤≥іµґЈЄєЇїЉљЊњјЅ¬√ƒ≈∆«»… ЋћЌќѕ–—“”‘’÷„ЎўЏџ№Ёёяабвгдежзийклмнопрстуфхцчшщъыьэю¤"
+ },
+ "koi8r": {
+ "type": "_sbcs",
+ "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ё╓╔╕╖╗╘╙╚╛╜╝╞╟╠╡Ё╢╣╤╥╦╧╨╩╪╫╬©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
+ },
+ "koi8u": {
+ "type": "_sbcs",
+ "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ёє╔ії╗╘╙╚╛ґ╝╞╟╠╡ЁЄ╣ІЇ╦╧╨╩╪Ґ╬©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
+ },
+ "koi8ru": {
+ "type": "_sbcs",
+ "chars": "─│┌┐└┘├┤┬┴┼▀▄█▌▐░▒▓⌠■∙√≈≤≥ ⌡°²·÷═║╒ёє╔ії╗╘╙╚╛ґў╞╟╠╡ЁЄ╣ІЇ╦╧╨╩╪ҐЎ©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
+ },
+ "koi8t": {
+ "type": "_sbcs",
+ "chars": "қғ‚Ғ„…†‡�‰ҳ‹ҲҷҶ�Қ‘’“”•–—�™�›�����ӯӮё¤ӣ¦§���«¬®�°±²Ё�Ӣ¶·�№�»���©юабцдефгхийклмнопярстужвьызшэщчъЮАБЦДЕФГХИЙКЛМНОПЯРСТУЖВЬЫЗШЭЩЧЪ"
+ },
+ "armscii8": {
+ "type": "_sbcs",
+ "chars": "
�և։)(»«—.՝,-֊…՜՛՞ԱաԲբԳգԴդԵեԶզԷէԸըԹթԺժԻիԼլԽխԾծԿկՀհՁձՂղՃճՄմՅյՆնՇշՈոՉչՊպՋջՌռՍսՎվՏտՐրՑցՒւՓփՔքՕօՖֆ՚�"
+ },
+ "rk1048": {
+ "type": "_sbcs",
+ "chars": "ЂЃ‚ѓ„…†‡€‰Љ‹ЊҚҺЏђ‘’“”•–—�™љ›њқһџ ҰұӘ¤Ө¦§Ё©Ғ«¬®Ү°±Ііөµ¶·ё№ғ»әҢңүАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
+ },
+ "tcvn": {
+ "type": "_sbcs",
+ "chars": "\u0000ÚỤ\u0003ỪỬỮ\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010ỨỰỲỶỸÝỴ\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ÀẢÃÁẠẶẬÈẺẼÉẸỆÌỈĨÍỊÒỎÕÓỌỘỜỞỠỚỢÙỦŨ ĂÂÊÔƠƯĐăâêôơưđẶ̀̀̉̃́àảãáạẲằẳẵắẴẮẦẨẪẤỀặầẩẫấậèỂẻẽéẹềểễếệìỉỄẾỒĩíịòỔỏõóọồổỗốộờởỡớợùỖủũúụừửữứựỳỷỹýỵỐ"
+ },
+ "georgianacademy": {
+ "type": "_sbcs",
+ "chars": "‚ƒ„…†‡ˆ‰Š‹Œ‘’“”•–—˜™š›œŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿აბგდევზთიკლმნოპჟრსტუფქღყშჩცძწჭხჯჰჱჲჳჴჵჶçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
+ },
+ "georgianps": {
+ "type": "_sbcs",
+ "chars": "‚ƒ„…†‡ˆ‰Š‹Œ‘’“”•–—˜™š›œŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿აბგდევზჱთიკლმნჲოპჟრსტჳუფქღყშჩცძწჭხჴჯჰჵæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
+ },
+ "pt154": {
+ "type": "_sbcs",
+ "chars": "ҖҒӮғ„…ҶҮҲүҠӢҢҚҺҸҗ‘’“”•–—ҳҷҡӣңқһҹ ЎўЈӨҘҰ§Ё©Ә«¬ӯ®Ҝ°ұІіҙө¶·ё№ә»јҪҫҝАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя"
+ },
+ "viscii": {
+ "type": "_sbcs",
+ "chars": "\u0000\u0001Ẳ\u0003\u0004ẴẪ\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013Ỷ\u0015\u0016\u0017\u0018Ỹ\u001a\u001b\u001c\u001dỴ\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ẠẮẰẶẤẦẨẬẼẸẾỀỂỄỆỐỒỔỖỘỢỚỜỞỊỎỌỈỦŨỤỲÕắằặấầẩậẽẹếềểễệốồổỗỠƠộờởịỰỨỪỬơớƯÀÁÂÃẢĂẳẵÈÉÊẺÌÍĨỳĐứÒÓÔạỷừửÙÚỹỵÝỡưàáâãảăữẫèéêẻìíĩỉđựòóôõỏọụùúũủýợỮ"
+ },
+ "iso646cn": {
+ "type": "_sbcs",
+ "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#¥%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}‾��������������������������������������������������������������������������������������������������������������������������������"
+ },
+ "iso646jp": {
+ "type": "_sbcs",
+ "chars": "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007\b\t\n\u000b\f\r\u000e\u000f\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017\u0018\u0019\u001a\u001b\u001c\u001d\u001e\u001f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[¥]^_`abcdefghijklmnopqrstuvwxyz{|}‾��������������������������������������������������������������������������������������������������������������������������������"
+ },
+ "hproman8": {
+ "type": "_sbcs",
+ "chars": "
ÀÂÈÊËÎÏ´ˋˆ¨˜ÙÛ₤¯Ýý°ÇçÑñ¡¿¤£¥§ƒ¢âêôûáéóúàèòùäëöüÅîØÆåíøæÄìÖÜÉïßÔÁÃãÐðÍÌÓÒÕõŠšÚŸÿÞþ·µ¶¾—¼½ªº«■»±�"
+ },
+ "macintosh": {
+ "type": "_sbcs",
+ "chars": "ÄÅÇÉÑÖÜáàâäãåçéèêëíìîïñóòôöõúùûü†°¢£§•¶ß®©™´¨≠ÆØ∞±≤≥¥µ∂∑∏π∫ªºΩæø¿¡¬√ƒ≈∆«»… ÀÃÕŒœ–—“”‘’÷◊ÿŸ⁄¤‹›fifl‡·‚„‰ÂÊÁËÈÍÎÏÌÓÔ�ÒÚÛÙıˆ˜¯˘˙˚¸˝˛ˇ"
+ },
+ "ascii": {
+ "type": "_sbcs",
+ "chars": "��������������������������������������������������������������������������������������������������������������������������������"
+ },
+ "tis620": {
+ "type": "_sbcs",
+ "chars": "���������������������������������กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรฤลฦวศษสหฬอฮฯะัาำิีึืฺุู����฿เแโใไๅๆ็่้๊๋์ํ๎๏๐๑๒๓๔๕๖๗๘๙๚๛����"
+ }
+}
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data.js
new file mode 100644
index 00000000..066f904e
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/sbcs-data.js
@@ -0,0 +1,179 @@
+"use strict";
+
+// Manually added data to be used by sbcs codec in addition to generated one.
+
+module.exports = {
+ // Not supported by iconv, not sure why.
+ "10029": "maccenteuro",
+ "maccenteuro": {
+ "type": "_sbcs",
+ "chars": "ÄĀāÉĄÖÜáąČäčĆć鏟ĎíďĒēĖóėôöõúĚěü†°Ę£§•¶ß®©™ę¨≠ģĮįĪ≤≥īĶ∂∑łĻļĽľĹĺŅņѬ√ńŇ∆«»… ňŐÕőŌ–—“”‘’÷◊ōŔŕŘ‹›řŖŗŠ‚„šŚśÁŤťÍŽžŪÓÔūŮÚůŰűŲųÝýķŻŁżĢˇ"
+ },
+
+ "808": "cp808",
+ "ibm808": "cp808",
+ "cp808": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмноп░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀рстуфхцчшщъыьэюяЁёЄєЇїЎў°∙·√№€■ "
+ },
+
+ "mik": {
+ "type": "_sbcs",
+ "chars": "АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюя└┴┬├─┼╣║╚╔╩╦╠═╬┐░▒▓│┤№§╗╝┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ "
+ },
+
+ "cp720": {
+ "type": "_sbcs",
+ "chars": "\x80\x81éâ\x84à\x86çêëèïî\x8d\x8e\x8f\x90\u0651\u0652ô¤ـûùءآأؤ£إئابةتثجحخدذرزسشص«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀ضطظعغفµقكلمنهوىي≡\u064b\u064c\u064d\u064e\u064f\u0650≈°∙·√ⁿ²■\u00a0"
+ },
+
+ // Aliases of generated encodings.
+ "ascii8bit": "ascii",
+ "usascii": "ascii",
+ "ansix34": "ascii",
+ "ansix341968": "ascii",
+ "ansix341986": "ascii",
+ "csascii": "ascii",
+ "cp367": "ascii",
+ "ibm367": "ascii",
+ "isoir6": "ascii",
+ "iso646us": "ascii",
+ "iso646irv": "ascii",
+ "us": "ascii",
+
+ "latin1": "iso88591",
+ "latin2": "iso88592",
+ "latin3": "iso88593",
+ "latin4": "iso88594",
+ "latin5": "iso88599",
+ "latin6": "iso885910",
+ "latin7": "iso885913",
+ "latin8": "iso885914",
+ "latin9": "iso885915",
+ "latin10": "iso885916",
+
+ "csisolatin1": "iso88591",
+ "csisolatin2": "iso88592",
+ "csisolatin3": "iso88593",
+ "csisolatin4": "iso88594",
+ "csisolatincyrillic": "iso88595",
+ "csisolatinarabic": "iso88596",
+ "csisolatingreek" : "iso88597",
+ "csisolatinhebrew": "iso88598",
+ "csisolatin5": "iso88599",
+ "csisolatin6": "iso885910",
+
+ "l1": "iso88591",
+ "l2": "iso88592",
+ "l3": "iso88593",
+ "l4": "iso88594",
+ "l5": "iso88599",
+ "l6": "iso885910",
+ "l7": "iso885913",
+ "l8": "iso885914",
+ "l9": "iso885915",
+ "l10": "iso885916",
+
+ "isoir14": "iso646jp",
+ "isoir57": "iso646cn",
+ "isoir100": "iso88591",
+ "isoir101": "iso88592",
+ "isoir109": "iso88593",
+ "isoir110": "iso88594",
+ "isoir144": "iso88595",
+ "isoir127": "iso88596",
+ "isoir126": "iso88597",
+ "isoir138": "iso88598",
+ "isoir148": "iso88599",
+ "isoir157": "iso885910",
+ "isoir166": "tis620",
+ "isoir179": "iso885913",
+ "isoir199": "iso885914",
+ "isoir203": "iso885915",
+ "isoir226": "iso885916",
+
+ "cp819": "iso88591",
+ "ibm819": "iso88591",
+
+ "cyrillic": "iso88595",
+
+ "arabic": "iso88596",
+ "arabic8": "iso88596",
+ "ecma114": "iso88596",
+ "asmo708": "iso88596",
+
+ "greek" : "iso88597",
+ "greek8" : "iso88597",
+ "ecma118" : "iso88597",
+ "elot928" : "iso88597",
+
+ "hebrew": "iso88598",
+ "hebrew8": "iso88598",
+
+ "turkish": "iso88599",
+ "turkish8": "iso88599",
+
+ "thai": "iso885911",
+ "thai8": "iso885911",
+
+ "celtic": "iso885914",
+ "celtic8": "iso885914",
+ "isoceltic": "iso885914",
+
+ "tis6200": "tis620",
+ "tis62025291": "tis620",
+ "tis62025330": "tis620",
+
+ "10000": "macroman",
+ "10006": "macgreek",
+ "10007": "maccyrillic",
+ "10079": "maciceland",
+ "10081": "macturkish",
+
+ "cspc8codepage437": "cp437",
+ "cspc775baltic": "cp775",
+ "cspc850multilingual": "cp850",
+ "cspcp852": "cp852",
+ "cspc862latinhebrew": "cp862",
+ "cpgr": "cp869",
+
+ "msee": "cp1250",
+ "mscyrl": "cp1251",
+ "msansi": "cp1252",
+ "msgreek": "cp1253",
+ "msturk": "cp1254",
+ "mshebr": "cp1255",
+ "msarab": "cp1256",
+ "winbaltrim": "cp1257",
+
+ "cp20866": "koi8r",
+ "20866": "koi8r",
+ "ibm878": "koi8r",
+ "cskoi8r": "koi8r",
+
+ "cp21866": "koi8u",
+ "21866": "koi8u",
+ "ibm1168": "koi8u",
+
+ "strk10482002": "rk1048",
+
+ "tcvn5712": "tcvn",
+ "tcvn57121": "tcvn",
+
+ "gb198880": "iso646cn",
+ "cn": "iso646cn",
+
+ "csiso14jisc6220ro": "iso646jp",
+ "jisc62201969ro": "iso646jp",
+ "jp": "iso646jp",
+
+ "cshproman8": "hproman8",
+ "r8": "hproman8",
+ "roman8": "hproman8",
+ "xroman8": "hproman8",
+ "ibm1051": "hproman8",
+
+ "mac": "macintosh",
+ "csmacintosh": "macintosh",
+};
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/big5-added.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/big5-added.json
new file mode 100644
index 00000000..3c3d3c2f
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/big5-added.json
@@ -0,0 +1,122 @@
+[
+["8740","䏰䰲䘃䖦䕸𧉧䵷䖳𧲱䳢𧳅㮕䜶䝄䱇䱀𤊿𣘗𧍒𦺋𧃒䱗𪍑䝏䗚䲅𧱬䴇䪤䚡𦬣爥𥩔𡩣𣸆𣽡晍囻"],
+["8767","綕夝𨮹㷴霴𧯯寛𡵞媤㘥𩺰嫑宷峼杮薓𩥅瑡璝㡵𡵓𣚞𦀡㻬"],
+["87a1","𥣞㫵竼龗𤅡𨤍𣇪𠪊𣉞䌊蒄龖鐯䤰蘓墖靊鈘秐稲晠権袝瑌篅枂稬剏遆㓦珄𥶹瓆鿇垳䤯呌䄱𣚎堘穲𧭥讏䚮𦺈䆁𥶙箮𢒼鿈𢓁𢓉𢓌鿉蔄𣖻䂴鿊䓡𪷿拁灮鿋"],
+["8840","㇀",4,"𠄌㇅𠃑𠃍㇆㇇𠃋𡿨㇈𠃊㇉㇊㇋㇌𠄎㇍㇎ĀÁǍÀĒÉĚÈŌÓǑÒÊ̄ẾÊ̌ỀÊāáǎàɑēéěèīíǐìōóǒòūúǔùǖǘǚ"],
+["88a1","ǜüê̄ếê̌ềêɡ⏚⏛"],
+["8940","𪎩𡅅"],
+["8943","攊"],
+["8946","丽滝鵎釟"],
+["894c","𧜵撑会伨侨兖兴农凤务动医华发变团声处备夲头学实実岚庆总斉柾栄桥济炼电纤纬纺织经统缆缷艺苏药视设询车轧轮"],
+["89a1","琑糼緍楆竉刧"],
+["89ab","醌碸酞肼"],
+["89b0","贋胶𠧧"],
+["89b5","肟黇䳍鷉鸌䰾𩷶𧀎鸊𪄳㗁"],
+["89c1","溚舾甙"],
+["89c5","䤑马骏龙禇𨑬𡷊𠗐𢫦两亁亀亇亿仫伷㑌侽㹈倃傈㑽㒓㒥円夅凛凼刅争剹劐匧㗇厩㕑厰㕓参吣㕭㕲㚁咓咣咴咹哐哯唘唣唨㖘唿㖥㖿嗗㗅"],
+["8a40","𧶄唥"],
+["8a43","𠱂𠴕𥄫喐𢳆㧬𠍁蹆𤶸𩓥䁓𨂾睺𢰸㨴䟕𨅝𦧲𤷪擝𠵼𠾴𠳕𡃴撍蹾𠺖𠰋𠽤𢲩𨉖𤓓"],
+["8a64","𠵆𩩍𨃩䟴𤺧𢳂骲㩧𩗴㿭㔆𥋇𩟔𧣈𢵄鵮頕"],
+["8a76","䏙𦂥撴哣𢵌𢯊𡁷㧻𡁯"],
+["8aa1","𦛚𦜖𧦠擪𥁒𠱃蹨𢆡𨭌𠜱"],
+["8aac","䠋𠆩㿺塳𢶍"],
+["8ab2","𤗈𠓼𦂗𠽌𠶖啹䂻䎺"],
+["8abb","䪴𢩦𡂝膪飵𠶜捹㧾𢝵跀嚡摼㹃"],
+["8ac9","𪘁𠸉𢫏𢳉"],
+["8ace","𡃈𣧂㦒㨆𨊛㕸𥹉𢃇噒𠼱𢲲𩜠㒼氽𤸻"],
+["8adf","𧕴𢺋𢈈𪙛𨳍𠹺𠰴𦠜羓𡃏𢠃𢤹㗻𥇣𠺌𠾍𠺪㾓𠼰𠵇𡅏𠹌"],
+["8af6","𠺫𠮩𠵈𡃀𡄽㿹𢚖搲𠾭"],
+["8b40","𣏴𧘹𢯎𠵾𠵿𢱑𢱕㨘𠺘𡃇𠼮𪘲𦭐𨳒𨶙𨳊閪哌苄喹"],
+["8b55","𩻃鰦骶𧝞𢷮煀腭胬尜𦕲脴㞗卟𨂽醶𠻺𠸏𠹷𠻻㗝𤷫㘉𠳖嚯𢞵𡃉𠸐𠹸𡁸𡅈𨈇𡑕𠹹𤹐𢶤婔𡀝𡀞𡃵𡃶垜𠸑"],
+["8ba1","𧚔𨋍𠾵𠹻𥅾㜃𠾶𡆀𥋘𪊽𤧚𡠺𤅷𨉼墙剨㘚𥜽箲孨䠀䬬鼧䧧鰟鮍𥭴𣄽嗻㗲嚉丨夂𡯁屮靑𠂆乛亻㔾尣彑忄㣺扌攵歺氵氺灬爫丬犭𤣩罒礻糹罓𦉪㓁"],
+["8bde","𦍋耂肀𦘒𦥑卝衤见𧢲讠贝钅镸长门𨸏韦页风飞饣𩠐鱼鸟黄歯龜丷𠂇阝户钢"],
+["8c40","倻淾𩱳龦㷉袏𤅎灷峵䬠𥇍㕙𥴰愢𨨲辧釶熑朙玺𣊁𪄇㲋𡦀䬐磤琂冮𨜏䀉橣𪊺䈣蘏𠩯稪𩥇𨫪靕灍匤𢁾鏴盙𨧣龧矝亣俰傼丯众龨吴綋墒壐𡶶庒庙忂𢜒斋"],
+["8ca1","𣏹椙橃𣱣泿"],
+["8ca7","爀𤔅玌㻛𤨓嬕璹讃𥲤𥚕窓篬糃繬苸薗龩袐龪躹龫迏蕟駠鈡龬𨶹𡐿䁱䊢娚"],
+["8cc9","顨杫䉶圽"],
+["8cce","藖𤥻芿𧄍䲁𦵴嵻𦬕𦾾龭龮宖龯曧繛湗秊㶈䓃𣉖𢞖䎚䔶"],
+["8ce6","峕𣬚諹屸㴒𣕑嵸龲煗䕘𤃬𡸣䱷㥸㑊𠆤𦱁諌侴𠈹妿腬顖𩣺弻"],
+["8d40","𠮟"],
+["8d42","𢇁𨥭䄂䚻𩁹㼇龳𪆵䃸㟖䛷𦱆䅼𨚲𧏿䕭㣔𥒚䕡䔛䶉䱻䵶䗪㿈𤬏㙡䓞䒽䇭崾嵈嵖㷼㠏嶤嶹㠠㠸幂庽弥徃㤈㤔㤿㥍惗愽峥㦉憷憹懏㦸戬抐拥挘㧸嚱"],
+["8da1","㨃揢揻搇摚㩋擀崕嘡龟㪗斆㪽旿晓㫲暒㬢朖㭂枤栀㭘桊梄㭲㭱㭻椉楃牜楤榟榅㮼槖㯝橥橴橱檂㯬檙㯲檫檵櫔櫶殁毁毪汵沪㳋洂洆洦涁㳯涤涱渕渘温溆𨧀溻滢滚齿滨滩漤漴㵆𣽁澁澾㵪㵵熷岙㶊瀬㶑灐灔灯灿炉𠌥䏁㗱𠻘"],
+["8e40","𣻗垾𦻓焾𥟠㙎榢𨯩孴穉𥣡𩓙穥穽𥦬窻窰竂竃燑𦒍䇊竚竝竪䇯咲𥰁笋筕笩𥌎𥳾箢筯莜𥮴𦱿篐萡箒箸𥴠㶭𥱥蒒篺簆簵𥳁籄粃𤢂粦晽𤕸糉糇糦籴糳糵糎"],
+["8ea1","繧䔝𦹄絝𦻖璍綉綫焵綳緒𤁗𦀩緤㴓緵𡟹緥𨍭縝𦄡𦅚繮纒䌫鑬縧罀罁罇礶𦋐駡羗𦍑羣𡙡𠁨䕜𣝦䔃𨌺翺𦒉者耈耝耨耯𪂇𦳃耻耼聡𢜔䦉𦘦𣷣𦛨朥肧𨩈脇脚墰𢛶汿𦒘𤾸擧𡒊舘𡡞橓𤩥𤪕䑺舩𠬍𦩒𣵾俹𡓽蓢荢𦬊𤦧𣔰𡝳𣷸芪椛芳䇛"],
+["8f40","蕋苐茚𠸖𡞴㛁𣅽𣕚艻苢茘𣺋𦶣𦬅𦮗𣗎㶿茝嗬莅䔋𦶥莬菁菓㑾𦻔橗蕚㒖𦹂𢻯葘𥯤葱㷓䓤檧葊𣲵祘蒨𦮖𦹷𦹃蓞萏莑䒠蒓蓤𥲑䉀𥳀䕃蔴嫲𦺙䔧蕳䔖枿蘖"],
+["8fa1","𨘥𨘻藁𧂈蘂𡖂𧃍䕫䕪蘨㙈𡢢号𧎚虾蝱𪃸蟮𢰧螱蟚蠏噡虬桖䘏衅衆𧗠𣶹𧗤衞袜䙛袴袵揁装睷𧜏覇覊覦覩覧覼𨨥觧𧤤𧪽誜瞓釾誐𧩙竩𧬺𣾏䜓𧬸煼謌謟𥐰𥕥謿譌譍誩𤩺讐讛誯𡛟䘕衏貛𧵔𧶏貫㜥𧵓賖𧶘𧶽贒贃𡤐賛灜贑𤳉㻐起"],
+["9040","趩𨀂𡀔𤦊㭼𨆼𧄌竧躭躶軃鋔輙輭𨍥𨐒辥錃𪊟𠩐辳䤪𨧞𨔽𣶻廸𣉢迹𪀔𨚼𨔁𢌥㦀𦻗逷𨔼𧪾遡𨕬𨘋邨𨜓郄𨛦邮都酧㫰醩釄粬𨤳𡺉鈎沟鉁鉢𥖹銹𨫆𣲛𨬌𥗛"],
+["90a1","𠴱錬鍫𨫡𨯫炏嫃𨫢𨫥䥥鉄𨯬𨰹𨯿鍳鑛躼閅閦鐦閠濶䊹𢙺𨛘𡉼𣸮䧟氜陻隖䅬隣𦻕懚隶磵𨫠隽双䦡𦲸𠉴𦐐𩂯𩃥𤫑𡤕𣌊霱虂霶䨏䔽䖅𤫩灵孁霛靜𩇕靗孊𩇫靟鐥僐𣂷𣂼鞉鞟鞱鞾韀韒韠𥑬韮琜𩐳響韵𩐝𧥺䫑頴頳顋顦㬎𧅵㵑𠘰𤅜"],
+["9140","𥜆飊颷飈飇䫿𦴧𡛓喰飡飦飬鍸餹𤨩䭲𩡗𩤅駵騌騻騐驘𥜥㛄𩂱𩯕髠髢𩬅髴䰎鬔鬭𨘀倴鬴𦦨㣃𣁽魐魀𩴾婅𡡣鮎𤉋鰂鯿鰌𩹨鷔𩾷𪆒𪆫𪃡𪄣𪇟鵾鶃𪄴鸎梈"],
+["91a1","鷄𢅛𪆓𪈠𡤻𪈳鴹𪂹𪊴麐麕麞麢䴴麪麯𤍤黁㭠㧥㴝伲㞾𨰫鼂鼈䮖鐤𦶢鼗鼖鼹嚟嚊齅馸𩂋韲葿齢齩竜龎爖䮾𤥵𤦻煷𤧸𤍈𤩑玞𨯚𡣺禟𨥾𨸶鍩鏳𨩄鋬鎁鏋𨥬𤒹爗㻫睲穃烐𤑳𤏸煾𡟯炣𡢾𣖙㻇𡢅𥐯𡟸㜢𡛻𡠹㛡𡝴𡣑𥽋㜣𡛀坛𤨥𡏾𡊨"],
+["9240","𡏆𡒶蔃𣚦蔃葕𤦔𧅥𣸱𥕜𣻻𧁒䓴𣛮𩦝𦼦柹㜳㰕㷧塬𡤢栐䁗𣜿𤃡𤂋𤄏𦰡哋嚞𦚱嚒𠿟𠮨𠸍鏆𨬓鎜仸儫㠙𤐶亼𠑥𠍿佋侊𥙑婨𠆫𠏋㦙𠌊𠐔㐵伩𠋀𨺳𠉵諚𠈌亘"],
+["92a1","働儍侢伃𤨎𣺊佂倮偬傁俌俥偘僼兙兛兝兞湶𣖕𣸹𣺿浲𡢄𣺉冨凃𠗠䓝𠒣𠒒𠒑赺𨪜𠜎剙劤𠡳勡鍮䙺熌𤎌𠰠𤦬𡃤槑𠸝瑹㻞璙琔瑖玘䮎𤪼𤂍叐㖄爏𤃉喴𠍅响𠯆圝鉝雴鍦埝垍坿㘾壋媙𨩆𡛺𡝯𡜐娬妸銏婾嫏娒𥥆𡧳𡡡𤊕㛵洅瑃娡𥺃"],
+["9340","媁𨯗𠐓鏠璌𡌃焅䥲鐈𨧻鎽㞠尞岞幞幈𡦖𡥼𣫮廍孏𡤃𡤄㜁𡢠㛝𡛾㛓脪𨩇𡶺𣑲𨦨弌弎𡤧𡞫婫𡜻孄蘔𧗽衠恾𢡠𢘫忛㺸𢖯𢖾𩂈𦽳懀𠀾𠁆𢘛憙憘恵𢲛𢴇𤛔𩅍"],
+["93a1","摱𤙥𢭪㨩𢬢𣑐𩣪𢹸挷𪑛撶挱揑𤧣𢵧护𢲡搻敫楲㯴𣂎𣊭𤦉𣊫唍𣋠𡣙𩐿曎𣊉𣆳㫠䆐𥖄𨬢𥖏𡛼𥕛𥐥磮𣄃𡠪𣈴㑤𣈏𣆂𤋉暎𦴤晫䮓昰𧡰𡷫晣𣋒𣋡昞𥡲㣑𣠺𣞼㮙𣞢𣏾瓐㮖枏𤘪梶栞㯄檾㡣𣟕𤒇樳橒櫉欅𡤒攑梘橌㯗橺歗𣿀𣲚鎠鋲𨯪𨫋"],
+["9440","銉𨀞𨧜鑧涥漋𤧬浧𣽿㶏渄𤀼娽渊塇洤硂焻𤌚𤉶烱牐犇犔𤞏𤜥兹𤪤𠗫瑺𣻸𣙟𤩊𤤗𥿡㼆㺱𤫟𨰣𣼵悧㻳瓌琼鎇琷䒟𦷪䕑疃㽣𤳙𤴆㽘畕癳𪗆㬙瑨𨫌𤦫𤦎㫻"],
+["94a1","㷍𤩎㻿𤧅𤣳釺圲鍂𨫣𡡤僟𥈡𥇧睸𣈲眎眏睻𤚗𣞁㩞𤣰琸璛㺿𤪺𤫇䃈𤪖𦆮錇𥖁砞碍碈磒珐祙𧝁𥛣䄎禛蒖禥樭𣻺稺秴䅮𡛦䄲鈵秱𠵌𤦌𠊙𣶺𡝮㖗啫㕰㚪𠇔𠰍竢婙𢛵𥪯𥪜娍𠉛磰娪𥯆竾䇹籝籭䈑𥮳𥺼𥺦糍𤧹𡞰粎籼粮檲緜縇緓罎𦉡"],
+["9540","𦅜𧭈綗𥺂䉪𦭵𠤖柖𠁎𣗏埄𦐒𦏸𤥢翝笧𠠬𥫩𥵃笌𥸎駦虅驣樜𣐿㧢𤧷𦖭騟𦖠蒀𧄧𦳑䓪脷䐂胆脉腂𦞴飃𦩂艢艥𦩑葓𦶧蘐𧈛媆䅿𡡀嬫𡢡嫤𡣘蚠蜨𣶏蠭𧐢娂"],
+["95a1","衮佅袇袿裦襥襍𥚃襔𧞅𧞄𨯵𨯙𨮜𨧹㺭蒣䛵䛏㟲訽訜𩑈彍鈫𤊄旔焩烄𡡅鵭貟賩𧷜妚矃姰䍮㛔踪躧𤰉輰轊䋴汘澻𢌡䢛潹溋𡟚鯩㚵𤤯邻邗啱䤆醻鐄𨩋䁢𨫼鐧𨰝𨰻蓥訫閙閧閗閖𨴴瑅㻂𤣿𤩂𤏪㻧𣈥随𨻧𨹦𨹥㻌𤧭𤩸𣿮琒瑫㻼靁𩂰"],
+["9640","桇䨝𩂓𥟟靝鍨𨦉𨰦𨬯𦎾銺嬑譩䤼珹𤈛鞛靱餸𠼦巁𨯅𤪲頟𩓚鋶𩗗釥䓀𨭐𤩧𨭤飜𨩅㼀鈪䤥萔餻饍𧬆㷽馛䭯馪驜𨭥𥣈檏騡嫾騯𩣱䮐𩥈馼䮽䮗鍽塲𡌂堢𤦸"],
+["96a1","𡓨硄𢜟𣶸棅㵽鑘㤧慐𢞁𢥫愇鱏鱓鱻鰵鰐魿鯏𩸭鮟𪇵𪃾鴡䲮𤄄鸘䲰鴌𪆴𪃭𪃳𩤯鶥蒽𦸒𦿟𦮂藼䔳𦶤𦺄𦷰萠藮𦸀𣟗𦁤秢𣖜𣙀䤭𤧞㵢鏛銾鍈𠊿碹鉷鑍俤㑀遤𥕝砽硔碶硋𡝗𣇉𤥁㚚佲濚濙瀞瀞吔𤆵垻壳垊鴖埗焴㒯𤆬燫𦱀𤾗嬨𡞵𨩉"],
+["9740","愌嫎娋䊼𤒈㜬䭻𨧼鎻鎸𡣖𠼝葲𦳀𡐓𤋺𢰦𤏁妔𣶷𦝁綨𦅛𦂤𤦹𤦋𨧺鋥珢㻩璴𨭣𡢟㻡𤪳櫘珳珻㻖𤨾𤪔𡟙𤩦𠎧𡐤𤧥瑈𤤖炥𤥶銄珦鍟𠓾錱𨫎𨨖鎆𨯧𥗕䤵𨪂煫"],
+["97a1","𤥃𠳿嚤𠘚𠯫𠲸唂秄𡟺緾𡛂𤩐𡡒䔮鐁㜊𨫀𤦭妰𡢿𡢃𧒄媡㛢𣵛㚰鉟婹𨪁𡡢鍴㳍𠪴䪖㦊僴㵩㵌𡎜煵䋻𨈘渏𩃤䓫浗𧹏灧沯㳖𣿭𣸭渂漌㵯𠏵畑㚼㓈䚀㻚䡱姄鉮䤾轁𨰜𦯀堒埈㛖𡑒烾𤍢𤩱𢿣𡊰𢎽梹楧𡎘𣓥𧯴𣛟𨪃𣟖𣏺𤲟樚𣚭𦲷萾䓟䓎"],
+["9840","𦴦𦵑𦲂𦿞漗𧄉茽𡜺菭𦲀𧁓𡟛妉媂𡞳婡婱𡤅𤇼㜭姯𡜼㛇熎鎐暚𤊥婮娫𤊓樫𣻹𧜶𤑛𤋊焝𤉙𨧡侰𦴨峂𤓎𧹍𤎽樌𤉖𡌄炦焳𤏩㶥泟勇𤩏繥姫崯㷳彜𤩝𡟟綤萦"],
+["98a1","咅𣫺𣌀𠈔坾𠣕𠘙㿥𡾞𪊶瀃𩅛嵰玏糓𨩙𩐠俈翧狍猐𧫴猸猹𥛶獁獈㺩𧬘遬燵𤣲珡臶㻊県㻑沢国琙琞琟㻢㻰㻴㻺瓓㼎㽓畂畭畲疍㽼痈痜㿀癍㿗癴㿜発𤽜熈嘣覀塩䀝睃䀹条䁅㗛瞘䁪䁯属瞾矋売砘点砜䂨砹硇硑硦葈𥔵礳栃礲䄃"],
+["9940","䄉禑禙辻稆込䅧窑䆲窼艹䇄竏竛䇏両筢筬筻簒簛䉠䉺类粜䊌粸䊔糭输烀𠳏総緔緐緽羮羴犟䎗耠耥笹耮耱联㷌垴炠肷胩䏭脌猪脎脒畠脔䐁㬹腖腙腚"],
+["99a1","䐓堺腼膄䐥膓䐭膥埯臁臤艔䒏芦艶苊苘苿䒰荗险榊萅烵葤惣蒈䔄蒾蓡蓸蔐蔸蕒䔻蕯蕰藠䕷虲蚒蚲蛯际螋䘆䘗袮裿褤襇覑𧥧訩訸誔誴豑賔賲贜䞘塟跃䟭仮踺嗘坔蹱嗵躰䠷軎転軤軭軲辷迁迊迌逳駄䢭飠鈓䤞鈨鉘鉫銱銮銿"],
+["9a40","鋣鋫鋳鋴鋽鍃鎄鎭䥅䥑麿鐗匁鐝鐭鐾䥪鑔鑹锭関䦧间阳䧥枠䨤靀䨵鞲韂噔䫤惨颹䬙飱塄餎餙冴餜餷饂饝饢䭰駅䮝騼鬏窃魩鮁鯝鯱鯴䱭鰠㝯𡯂鵉鰺"],
+["9aa1","黾噐鶓鶽鷀鷼银辶鹻麬麱麽黆铜黢黱黸竈齄𠂔𠊷𠎠椚铃妬𠓗塀铁㞹𠗕𠘕𠙶𡚺块煳𠫂𠫍𠮿呪吆𠯋咞𠯻𠰻𠱓𠱥𠱼惧𠲍噺𠲵𠳝𠳭𠵯𠶲𠷈楕鰯螥𠸄𠸎𠻗𠾐𠼭𠹳尠𠾼帋𡁜𡁏𡁶朞𡁻𡂈𡂖㙇𡂿𡃓𡄯𡄻卤蒭𡋣𡍵𡌶讁𡕷𡘙𡟃𡟇乸炻𡠭𡥪"],
+["9b40","𡨭𡩅𡰪𡱰𡲬𡻈拃𡻕𡼕熘桕𢁅槩㛈𢉼𢏗𢏺𢜪𢡱𢥏苽𢥧𢦓𢫕覥𢫨辠𢬎鞸𢬿顇骽𢱌"],
+["9b62","𢲈𢲷𥯨𢴈𢴒𢶷𢶕𢹂𢽴𢿌𣀳𣁦𣌟𣏞徱晈暿𧩹𣕧𣗳爁𤦺矗𣘚𣜖纇𠍆墵朎"],
+["9ba1","椘𣪧𧙗𥿢𣸑𣺹𧗾𢂚䣐䪸𤄙𨪚𤋮𤌍𤀻𤌴𤎖𤩅𠗊凒𠘑妟𡺨㮾𣳿𤐄𤓖垈𤙴㦛𤜯𨗨𩧉㝢𢇃譞𨭎駖𤠒𤣻𤨕爉𤫀𠱸奥𤺥𤾆𠝹軚𥀬劏圿煱𥊙𥐙𣽊𤪧喼𥑆𥑮𦭒釔㑳𥔿𧘲𥕞䜘𥕢𥕦𥟇𤤿𥡝偦㓻𣏌惞𥤃䝼𨥈𥪮𥮉𥰆𡶐垡煑澶𦄂𧰒遖𦆲𤾚譢𦐂𦑊"],
+["9c40","嵛𦯷輶𦒄𡤜諪𤧶𦒈𣿯𦔒䯀𦖿𦚵𢜛鑥𥟡憕娧晉侻嚹𤔡𦛼乪𤤴陖涏𦲽㘘襷𦞙𦡮𦐑𦡞營𦣇筂𩃀𠨑𦤦鄄𦤹穅鷰𦧺騦𦨭㙟𦑩𠀡禃𦨴𦭛崬𣔙菏𦮝䛐𦲤画补𦶮墶"],
+["9ca1","㜜𢖍𧁋𧇍㱔𧊀𧊅銁𢅺𧊋錰𧋦𤧐氹钟𧑐𠻸蠧裵𢤦𨑳𡞱溸𤨪𡠠㦤㚹尐秣䔿暶𩲭𩢤襃𧟌𧡘囖䃟𡘊㦡𣜯𨃨𡏅熭荦𧧝𩆨婧䲷𧂯𨦫𧧽𧨊𧬋𧵦𤅺筃祾𨀉澵𪋟樃𨌘厢𦸇鎿栶靝𨅯𨀣𦦵𡏭𣈯𨁈嶅𨰰𨂃圕頣𨥉嶫𤦈斾槕叒𤪥𣾁㰑朶𨂐𨃴𨄮𡾡𨅏"],
+["9d40","𨆉𨆯𨈚𨌆𨌯𨎊㗊𨑨𨚪䣺揦𨥖砈鉕𨦸䏲𨧧䏟𨧨𨭆𨯔姸𨰉輋𨿅𩃬筑𩄐𩄼㷷𩅞𤫊运犏嚋𩓧𩗩𩖰𩖸𩜲𩣑𩥉𩥪𩧃𩨨𩬎𩵚𩶛纟𩻸𩼣䲤镇𪊓熢𪋿䶑递𪗋䶜𠲜达嗁"],
+["9da1","辺𢒰边𤪓䔉繿潖檱仪㓤𨬬𧢝㜺躀𡟵𨀤𨭬𨮙𧨾𦚯㷫𧙕𣲷𥘵𥥖亚𥺁𦉘嚿𠹭踎孭𣺈𤲞揞拐𡟶𡡻攰嘭𥱊吚𥌑㷆𩶘䱽嘢嘞罉𥻘奵𣵀蝰东𠿪𠵉𣚺脗鵞贘瘻鱅癎瞹鍅吲腈苷嘥脲萘肽嗪祢噃吖𠺝㗎嘅嗱曱𨋢㘭甴嗰喺咗啲𠱁𠲖廐𥅈𠹶𢱢"],
+["9e40","𠺢麫絚嗞𡁵抝靭咔賍燶酶揼掹揾啩𢭃鱲𢺳冚㓟𠶧冧呍唞唓癦踭𦢊疱肶蠄螆裇膶萜𡃁䓬猄𤜆宐茋𦢓噻𢛴𧴯𤆣𧵳𦻐𧊶酰𡇙鈈𣳼𪚩𠺬𠻹牦𡲢䝎𤿂𧿹𠿫䃺"],
+["9ea1","鱝攟𢶠䣳𤟠𩵼𠿬𠸊恢𧖣𠿭"],
+["9ead","𦁈𡆇熣纎鵐业丄㕷嬍沲卧㚬㧜卽㚥𤘘墚𤭮舭呋垪𥪕𠥹"],
+["9ec5","㩒𢑥獴𩺬䴉鯭𣳾𩼰䱛𤾩𩖞𩿞葜𣶶𧊲𦞳𣜠挮紥𣻷𣸬㨪逈勌㹴㙺䗩𠒎癀嫰𠺶硺𧼮墧䂿噼鮋嵴癔𪐴麅䳡痹㟻愙𣃚𤏲"],
+["9ef5","噝𡊩垧𤥣𩸆刴𧂮㖭汊鵼"],
+["9f40","籖鬹埞𡝬屓擓𩓐𦌵𧅤蚭𠴨𦴢𤫢𠵱"],
+["9f4f","凾𡼏嶎霃𡷑麁遌笟鬂峑箣扨挵髿篏鬪籾鬮籂粆鰕篼鬉鼗鰛𤤾齚啳寃俽麘俲剠㸆勑坧偖妷帒韈鶫轜呩鞴饀鞺匬愰"],
+["9fa1","椬叚鰊鴂䰻陁榀傦畆𡝭駚剳"],
+["9fae","酙隁酜"],
+["9fb2","酑𨺗捿𦴣櫊嘑醎畺抅𠏼獏籰𥰡𣳽"],
+["9fc1","𤤙盖鮝个𠳔莾衂"],
+["9fc9","届槀僭坺刟巵从氱𠇲伹咜哚劚趂㗾弌㗳"],
+["9fdb","歒酼龥鮗頮颴骺麨麄煺笔"],
+["9fe7","毺蠘罸"],
+["9feb","嘠𪙊蹷齓"],
+["9ff0","跔蹏鸜踁抂𨍽踨蹵竓𤩷稾磘泪詧瘇"],
+["a040","𨩚鼦泎蟖痃𪊲硓咢贌狢獱謭猂瓱賫𤪻蘯徺袠䒷"],
+["a055","𡠻𦸅"],
+["a058","詾𢔛"],
+["a05b","惽癧髗鵄鍮鮏蟵"],
+["a063","蠏賷猬霡鮰㗖犲䰇籑饊𦅙慙䰄麖慽"],
+["a073","坟慯抦戹拎㩜懢厪𣏵捤栂㗒"],
+["a0a1","嵗𨯂迚𨸹"],
+["a0a6","僙𡵆礆匲阸𠼻䁥"],
+["a0ae","矾"],
+["a0b0","糂𥼚糚稭聦聣絍甅瓲覔舚朌聢𧒆聛瓰脃眤覉𦟌畓𦻑螩蟎臈螌詉貭譃眫瓸蓚㘵榲趦"],
+["a0d4","覩瑨涹蟁𤀑瓧㷛煶悤憜㳑煢恷"],
+["a0e2","罱𨬭牐惩䭾删㰘𣳇𥻗𧙖𥔱𡥄𡋾𩤃𦷜𧂭峁𦆭𨨏𣙷𠃮𦡆𤼎䕢嬟𦍌齐麦𦉫"],
+["a3c0","␀",31,"␡"],
+["c6a1","①",9,"⑴",9,"ⅰ",9,"丶丿亅亠冂冖冫勹匸卩厶夊宀巛⼳广廴彐彡攴无疒癶辵隶¨ˆヽヾゝゞ〃仝々〆〇ー［］✽ぁ",23],
+["c740","す",58,"ァアィイ"],
+["c7a1","ゥ",81,"А",5,"ЁЖ",4],
+["c840","Л",26,"ёж",25,"⇧↸↹㇏𠃌乚𠂊刂䒑"],
+["c8a1","龰冈龱𧘇"],
+["c8cd","￢￤＇＂㈱№℡゛゜⺀⺄⺆⺇⺈⺊⺌⺍⺕⺜⺝⺥⺧⺪⺬⺮⺶⺼⺾⻆⻊⻌⻍⻏⻖⻗⻞⻣"],
+["c8f5","ʃɐɛɔɵœøŋʊɪ"],
+["f9fe","￭"],
+["fa40","𠕇鋛𠗟𣿅蕌䊵珯况㙉𤥂𨧤鍄𡧛苮𣳈砼杄拟𤤳𨦪𠊠𦮳𡌅侫𢓭倈𦴩𧪄𣘀𤪱𢔓倩𠍾徤𠎀𠍇滛𠐟偽儁㑺儎顬㝃萖𤦤𠒇兠𣎴兪𠯿𢃼𠋥𢔰𠖎𣈳𡦃宂蝽𠖳𣲙冲冸"],
+["faa1","鴴凉减凑㳜凓𤪦决凢卂凭菍椾𣜭彻刋刦刼劵剗劔効勅簕蕂勠蘍𦬓包𨫞啉滙𣾀𠥔𣿬匳卄𠯢泋𡜦栛珕恊㺪㣌𡛨燝䒢卭却𨚫卾卿𡖖𡘓矦厓𨪛厠厫厮玧𥝲㽙玜叁叅汉义埾叙㪫𠮏叠𣿫𢶣叶𠱷吓灹唫晗浛呭𦭓𠵴啝咏咤䞦𡜍𠻝㶴𠵍"],
+["fb40","𨦼𢚘啇䳭启琗喆喩嘅𡣗𤀺䕒𤐵暳𡂴嘷曍𣊊暤暭噍噏磱囱鞇叾圀囯园𨭦㘣𡉏坆𤆥汮炋坂㚱𦱾埦𡐖堃𡑔𤍣堦𤯵塜墪㕡壠壜𡈼壻寿坃𪅐𤉸鏓㖡够梦㛃湙"],
+["fba1","𡘾娤啓𡚒蔅姉𠵎𦲁𦴪𡟜姙𡟻𡞲𦶦浱𡠨𡛕姹𦹅媫婣㛦𤦩婷㜈媖瑥嫓𦾡𢕔㶅𡤑㜲𡚸広勐孶斈孼𧨎䀄䡝𠈄寕慠𡨴𥧌𠖥寳宝䴐尅𡭄尓珎尔𡲥𦬨屉䣝岅峩峯嶋𡷹𡸷崐崘嵆𡺤岺巗苼㠭𤤁𢁉𢅳芇㠶㯂帮檊幵幺𤒼𠳓厦亷廐厨𡝱帉廴𨒂"],
+["fc40","廹廻㢠廼栾鐛弍𠇁弢㫞䢮𡌺强𦢈𢏐彘𢑱彣鞽𦹮彲鍀𨨶徧嶶㵟𥉐𡽪𧃸𢙨釖𠊞𨨩怱暅𡡷㥣㷇㘹垐𢞴祱㹀悞悤悳𤦂𤦏𧩓璤僡媠慤萤慂慈𦻒憁凴𠙖憇宪𣾷"],
+["fca1","𢡟懓𨮝𩥝懐㤲𢦀𢣁怣慜攞掋𠄘担𡝰拕𢸍捬𤧟㨗搸揸𡎎𡟼撐澊𢸶頔𤂌𥜝擡擥鑻㩦携㩗敍漖𤨨𤨣斅敭敟𣁾斵𤥀䬷旑䃘𡠩无旣忟𣐀昘𣇷𣇸晄𣆤𣆥晋𠹵晧𥇦晳晴𡸽𣈱𨗴𣇈𥌓矅𢣷馤朂𤎜𤨡㬫槺𣟂杞杧杢𤇍𩃭柗䓩栢湐鈼栁𣏦𦶠桝"],
+["fd40","𣑯槡樋𨫟楳棃𣗍椁椀㴲㨁𣘼㮀枬楡𨩊䋼椶榘㮡𠏉荣傐槹𣙙𢄪橅𣜃檝㯳枱櫈𩆜㰍欝𠤣惞欵歴𢟍溵𣫛𠎵𡥘㝀吡𣭚毡𣻼毜氷𢒋𤣱𦭑汚舦汹𣶼䓅𣶽𤆤𤤌𤤀"],
+["fda1","𣳉㛥㳫𠴲鮃𣇹𢒑羏样𦴥𦶡𦷫涖浜湼漄𤥿𤂅𦹲蔳𦽴凇沜渝萮𨬡港𣸯瑓𣾂秌湏媑𣁋濸㜍澝𣸰滺𡒗𤀽䕕鏰潄潜㵎潴𩅰㴻澟𤅄濓𤂑𤅕𤀹𣿰𣾴𤄿凟𤅖𤅗𤅀𦇝灋灾炧炁烌烕烖烟䄄㷨熴熖𤉷焫煅媈煊煮岜𤍥煏鍢𤋁焬𤑚𤨧𤨢熺𨯨炽爎"],
+["fe40","鑂爕夑鑃爤鍁𥘅爮牀𤥴梽牕牗㹕𣁄栍漽犂猪猫𤠣𨠫䣭𨠄猨献珏玪𠰺𦨮珉瑉𤇢𡛧𤨤昣㛅𤦷𤦍𤧻珷琕椃𤨦琹𠗃㻗瑜𢢭瑠𨺲瑇珤瑶莹瑬㜰瑴鏱樬璂䥓𤪌"],
+["fea1","𤅟𤩹𨮏孆𨰃𡢞瓈𡦈甎瓩甞𨻙𡩋寗𨺬鎅畍畊畧畮𤾂㼄𤴓疎瑝疞疴瘂瘬癑癏癯癶𦏵皐臯㟸𦤑𦤎皡皥皷盌𦾟葢𥂝𥅽𡸜眞眦着撯𥈠睘𣊬瞯𨥤𨥨𡛁矴砉𡍶𤨒棊碯磇磓隥礮𥗠磗礴碱𧘌辸袄𨬫𦂃𢘜禆褀椂禀𥡗禝𧬹礼禩渪𧄦㺨秆𩄍秔"]
+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp936.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp936.json
new file mode 100644
index 00000000..49ddb9a1
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp936.json
@@ -0,0 +1,264 @@
+[
+["0","\u0000",127,"€"],
+["8140","丂丄丅丆丏丒丗丟丠両丣並丩丮丯丱丳丵丷丼乀乁乂乄乆乊乑乕乗乚乛乢乣乤乥乧乨乪",5,"乲乴",9,"乿",6,"亇亊"],
+["8180","亐亖亗亙亜亝亞亣亪亯亰亱亴亶亷亸亹亼亽亾仈仌仏仐仒仚仛仜仠仢仦仧仩仭仮仯仱仴仸仹仺仼仾伀伂",6,"伋伌伒",4,"伜伝伡伣伨伩伬伭伮伱伳伵伷伹伻伾",4,"佄佅佇",5,"佒佔佖佡佢佦佨佪佫佭佮佱佲併佷佸佹佺佽侀侁侂侅來侇侊侌侎侐侒侓侕侖侘侙侚侜侞侟価侢"],
+["8240","侤侫侭侰",4,"侶",8,"俀俁係俆俇俈俉俋俌俍俒",4,"俙俛俠俢俤俥俧俫俬俰俲俴俵俶俷俹俻俼俽俿",11],
+["8280","個倎倐們倓倕倖倗倛倝倞倠倢倣値倧倫倯",10,"倻倽倿偀偁偂偄偅偆偉偊偋偍偐",4,"偖偗偘偙偛偝",7,"偦",5,"偭",8,"偸偹偺偼偽傁傂傃傄傆傇傉傊傋傌傎",20,"傤傦傪傫傭",4,"傳",6,"傼"],
+["8340","傽",17,"僐",5,"僗僘僙僛",10,"僨僩僪僫僯僰僱僲僴僶",4,"僼",9,"儈"],
+["8380","儉儊儌",5,"儓",13,"儢",28,"兂兇兊兌兎兏児兒兓兗兘兙兛兝",4,"兣兤兦內兩兪兯兲兺兾兿冃冄円冇冊冋冎冏冐冑冓冔冘冚冝冞冟冡冣冦",4,"冭冮冴冸冹冺冾冿凁凂凃凅凈凊凍凎凐凒",5],
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+["fe40","兀嗀﨎﨏﨑﨓﨔礼﨟蘒﨡﨣﨤﨧﨨﨩"]
+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp949.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp949.json
new file mode 100644
index 00000000..2022a007
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp949.json
@@ -0,0 +1,273 @@
+[
+["0","\u0000",127],
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+["ba81","틒틓틕틖틗틙틚틛틝",6,"틦",9,"틲틳틵틶틷틹틺벙벚베벡벤벧벨벰벱벳벴벵벼벽변별볍볏볐병볕볘볜보복볶본볼봄봅봇봉봐봔봤봬뵀뵈뵉뵌뵐뵘뵙뵤뵨부북분붇불붉붊붐붑붓붕붙붚붜붤붰붸뷔뷕뷘뷜뷩뷰뷴뷸븀븃븅브븍븐블븜븝븟비빅빈빌빎빔빕빗빙빚빛빠빡빤"],
+["bb41","틻",4,"팂팄팆",5,"팏팑팒팓팕팗",4,"팞팢팣"],
+["bb61","팤팦팧팪팫팭팮팯팱",6,"팺팾",5,"퍆퍇퍈퍉"],
+["bb81","퍊",31,"빨빪빰빱빳빴빵빻빼빽뺀뺄뺌뺍뺏뺐뺑뺘뺙뺨뻐뻑뻔뻗뻘뻠뻣뻤뻥뻬뼁뼈뼉뼘뼙뼛뼜뼝뽀뽁뽄뽈뽐뽑뽕뾔뾰뿅뿌뿍뿐뿔뿜뿟뿡쀼쁑쁘쁜쁠쁨쁩삐삑삔삘삠삡삣삥사삭삯산삳살삵삶삼삽삿샀상샅새색샌샐샘샙샛샜생샤"],
+["bc41","퍪",17,"퍾퍿펁펂펃펅펆펇"],
+["bc61","펈펉펊펋펎펒",5,"펚펛펝펞펟펡",6,"펪펬펮"],
+["bc81","펯",4,"펵펶펷펹펺펻펽",6,"폆폇폊",5,"폑",5,"샥샨샬샴샵샷샹섀섄섈섐섕서",4,"섣설섦섧섬섭섯섰성섶세섹센셀셈셉셋셌셍셔셕션셜셤셥셧셨셩셰셴셸솅소속솎손솔솖솜솝솟송솥솨솩솬솰솽쇄쇈쇌쇔쇗쇘쇠쇤쇨쇰쇱쇳쇼쇽숀숄숌숍숏숑수숙순숟술숨숩숫숭"],
+["bd41","폗폙",7,"폢폤",7,"폮폯폱폲폳폵폶폷"],
+["bd61","폸폹폺폻폾퐀퐂",5,"퐉",13],
+["bd81","퐗",5,"퐞",25,"숯숱숲숴쉈쉐쉑쉔쉘쉠쉥쉬쉭쉰쉴쉼쉽쉿슁슈슉슐슘슛슝스슥슨슬슭슴습슷승시식신싣실싫심십싯싱싶싸싹싻싼쌀쌈쌉쌌쌍쌓쌔쌕쌘쌜쌤쌥쌨쌩썅써썩썬썰썲썸썹썼썽쎄쎈쎌쏀쏘쏙쏜쏟쏠쏢쏨쏩쏭쏴쏵쏸쐈쐐쐤쐬쐰"],
+["be41","퐸",7,"푁푂푃푅",14],
+["be61","푔",7,"푝푞푟푡푢푣푥",7,"푮푰푱푲"],
+["be81","푳",4,"푺푻푽푾풁풃",4,"풊풌풎",5,"풕",8,"쐴쐼쐽쑈쑤쑥쑨쑬쑴쑵쑹쒀쒔쒜쒸쒼쓩쓰쓱쓴쓸쓺쓿씀씁씌씐씔씜씨씩씬씰씸씹씻씽아악안앉않알앍앎앓암압앗았앙앝앞애액앤앨앰앱앳앴앵야약얀얄얇얌얍얏양얕얗얘얜얠얩어억언얹얻얼얽얾엄",6,"엌엎"],
+["bf41","풞",10,"풪",14],
+["bf61","풹",18,"퓍퓎퓏퓑퓒퓓퓕"],
+["bf81","퓖",5,"퓝퓞퓠",7,"퓩퓪퓫퓭퓮퓯퓱",6,"퓹퓺퓼에엑엔엘엠엡엣엥여역엮연열엶엷염",5,"옅옆옇예옌옐옘옙옛옜오옥온올옭옮옰옳옴옵옷옹옻와왁완왈왐왑왓왔왕왜왝왠왬왯왱외왹왼욀욈욉욋욍요욕욘욜욤욥욧용우욱운울욹욺움웁웃웅워웍원월웜웝웠웡웨"],
+["c041","퓾",5,"픅픆픇픉픊픋픍",6,"픖픘",5],
+["c061","픞",25],
+["c081","픸픹픺픻픾픿핁핂핃핅",6,"핎핐핒",5,"핚핛핝핞핟핡핢핣웩웬웰웸웹웽위윅윈윌윔윕윗윙유육윤율윰윱윳융윷으윽은을읊음읍읏응",7,"읜읠읨읫이익인일읽읾잃임입잇있잉잊잎자작잔잖잗잘잚잠잡잣잤장잦재잭잰잴잼잽잿쟀쟁쟈쟉쟌쟎쟐쟘쟝쟤쟨쟬저적전절젊"],
+["c141","핤핦핧핪핬핮",5,"핶핷핹핺핻핽",6,"햆햊햋"],
+["c161","햌햍햎햏햑",19,"햦햧"],
+["c181","햨",31,"점접젓정젖제젝젠젤젬젭젯젱져젼졀졈졉졌졍졔조족존졸졺좀좁좃종좆좇좋좌좍좔좝좟좡좨좼좽죄죈죌죔죕죗죙죠죡죤죵주죽준줄줅줆줌줍줏중줘줬줴쥐쥑쥔쥘쥠쥡쥣쥬쥰쥴쥼즈즉즌즐즘즙즛증지직진짇질짊짐집짓"],
+["c241","헊헋헍헎헏헑헓",4,"헚헜헞",5,"헦헧헩헪헫헭헮"],
+["c261","헯",4,"헶헸헺",5,"혂혃혅혆혇혉",6,"혒"],
+["c281","혖",5,"혝혞혟혡혢혣혥",7,"혮",9,"혺혻징짖짙짚짜짝짠짢짤짧짬짭짯짰짱째짹짼쨀쨈쨉쨋쨌쨍쨔쨘쨩쩌쩍쩐쩔쩜쩝쩟쩠쩡쩨쩽쪄쪘쪼쪽쫀쫄쫌쫍쫏쫑쫓쫘쫙쫠쫬쫴쬈쬐쬔쬘쬠쬡쭁쭈쭉쭌쭐쭘쭙쭝쭤쭸쭹쮜쮸쯔쯤쯧쯩찌찍찐찔찜찝찡찢찧차착찬찮찰참찹찻"],
+["c341","혽혾혿홁홂홃홄홆홇홊홌홎홏홐홒홓홖홗홙홚홛홝",4],
+["c361","홢",4,"홨홪",5,"홲홳홵",11],
+["c381","횁횂횄횆",5,"횎횏횑횒횓횕",7,"횞횠횢",5,"횩횪찼창찾채책챈챌챔챕챗챘챙챠챤챦챨챰챵처척천철첨첩첫첬청체첵첸첼쳄쳅쳇쳉쳐쳔쳤쳬쳰촁초촉촌촐촘촙촛총촤촨촬촹최쵠쵤쵬쵭쵯쵱쵸춈추축춘출춤춥춧충춰췄췌췐취췬췰췸췹췻췽츄츈츌츔츙츠측츤츨츰츱츳층"],
+["c441","횫횭횮횯횱",7,"횺횼",7,"훆훇훉훊훋"],
+["c461","훍훎훏훐훒훓훕훖훘훚",5,"훡훢훣훥훦훧훩",4],
+["c481","훮훯훱훲훳훴훶",5,"훾훿휁휂휃휅",11,"휒휓휔치칙친칟칠칡침칩칫칭카칵칸칼캄캅캇캉캐캑캔캘캠캡캣캤캥캬캭컁커컥컨컫컬컴컵컷컸컹케켁켄켈켐켑켓켕켜켠켤켬켭켯켰켱켸코콕콘콜콤콥콧콩콰콱콴콸쾀쾅쾌쾡쾨쾰쿄쿠쿡쿤쿨쿰쿱쿳쿵쿼퀀퀄퀑퀘퀭퀴퀵퀸퀼"],
+["c541","휕휖휗휚휛휝휞휟휡",6,"휪휬휮",5,"휶휷휹"],
+["c561","휺휻휽",6,"흅흆흈흊",5,"흒흓흕흚",4],
+["c581","흟흢흤흦흧흨흪흫흭흮흯흱흲흳흵",6,"흾흿힀힂",5,"힊힋큄큅큇큉큐큔큘큠크큭큰클큼큽킁키킥킨킬킴킵킷킹타탁탄탈탉탐탑탓탔탕태택탠탤탬탭탯탰탱탸턍터턱턴털턺텀텁텃텄텅테텍텐텔템텝텟텡텨텬텼톄톈토톡톤톨톰톱톳통톺톼퇀퇘퇴퇸툇툉툐투툭툰툴툼툽툿퉁퉈퉜"],
+["c641","힍힎힏힑",6,"힚힜힞",5],
+["c6a1","퉤튀튁튄튈튐튑튕튜튠튤튬튱트특튼튿틀틂틈틉틋틔틘틜틤틥티틱틴틸팀팁팃팅파팍팎판팔팖팜팝팟팠팡팥패팩팬팰팸팹팻팼팽퍄퍅퍼퍽펀펄펌펍펏펐펑페펙펜펠펨펩펫펭펴편펼폄폅폈평폐폘폡폣포폭폰폴폼폽폿퐁"],
+["c7a1","퐈퐝푀푄표푠푤푭푯푸푹푼푿풀풂품풉풋풍풔풩퓌퓐퓔퓜퓟퓨퓬퓰퓸퓻퓽프픈플픔픕픗피픽핀필핌핍핏핑하학한할핥함합핫항해핵핸핼햄햅햇했행햐향허헉헌헐헒험헙헛헝헤헥헨헬헴헵헷헹혀혁현혈혐협혓혔형혜혠"],
+["c8a1","혤혭호혹혼홀홅홈홉홋홍홑화확환활홧황홰홱홴횃횅회획횐횔횝횟횡효횬횰횹횻후훅훈훌훑훔훗훙훠훤훨훰훵훼훽휀휄휑휘휙휜휠휨휩휫휭휴휵휸휼흄흇흉흐흑흔흖흗흘흙흠흡흣흥흩희흰흴흼흽힁히힉힌힐힘힙힛힝"],
+["caa1","伽佳假價加可呵哥嘉嫁家暇架枷柯歌珂痂稼苛茄街袈訶賈跏軻迦駕刻却各恪慤殼珏脚覺角閣侃刊墾奸姦干幹懇揀杆柬桿澗癎看磵稈竿簡肝艮艱諫間乫喝曷渴碣竭葛褐蝎鞨勘坎堪嵌感憾戡敢柑橄減甘疳監瞰紺邯鑑鑒龕"],
+["cba1","匣岬甲胛鉀閘剛堈姜岡崗康强彊慷江畺疆糠絳綱羌腔舡薑襁講鋼降鱇介价個凱塏愷愾慨改槪漑疥皆盖箇芥蓋豈鎧開喀客坑更粳羹醵倨去居巨拒据據擧渠炬祛距踞車遽鉅鋸乾件健巾建愆楗腱虔蹇鍵騫乞傑杰桀儉劍劒檢"],
+["cca1","瞼鈐黔劫怯迲偈憩揭擊格檄激膈覡隔堅牽犬甄絹繭肩見譴遣鵑抉決潔結缺訣兼慊箝謙鉗鎌京俓倞傾儆勁勍卿坰境庚徑慶憬擎敬景暻更梗涇炅烱璟璥瓊痙硬磬竟競絅經耕耿脛莖警輕逕鏡頃頸驚鯨係啓堺契季屆悸戒桂械"],
+["cda1","棨溪界癸磎稽系繫繼計誡谿階鷄古叩告呱固姑孤尻庫拷攷故敲暠枯槁沽痼皐睾稿羔考股膏苦苽菰藁蠱袴誥賈辜錮雇顧高鼓哭斛曲梏穀谷鵠困坤崑昆梱棍滾琨袞鯤汨滑骨供公共功孔工恐恭拱控攻珙空蚣貢鞏串寡戈果瓜"],
+["cea1","科菓誇課跨過鍋顆廓槨藿郭串冠官寬慣棺款灌琯瓘管罐菅觀貫關館刮恝括适侊光匡壙廣曠洸炚狂珖筐胱鑛卦掛罫乖傀塊壞怪愧拐槐魁宏紘肱轟交僑咬喬嬌嶠巧攪敎校橋狡皎矯絞翹膠蕎蛟較轎郊餃驕鮫丘久九仇俱具勾"],
+["cfa1","區口句咎嘔坵垢寇嶇廐懼拘救枸柩構歐毆毬求溝灸狗玖球瞿矩究絿耉臼舅舊苟衢謳購軀逑邱鉤銶駒驅鳩鷗龜國局菊鞠鞫麴君窘群裙軍郡堀屈掘窟宮弓穹窮芎躬倦券勸卷圈拳捲權淃眷厥獗蕨蹶闕机櫃潰詭軌饋句晷歸貴"],
+["d0a1","鬼龜叫圭奎揆槻珪硅窺竅糾葵規赳逵閨勻均畇筠菌鈞龜橘克剋劇戟棘極隙僅劤勤懃斤根槿瑾筋芹菫覲謹近饉契今妗擒昑檎琴禁禽芩衾衿襟金錦伋及急扱汲級給亘兢矜肯企伎其冀嗜器圻基埼夔奇妓寄岐崎己幾忌技旗旣"],
+["d1a1","朞期杞棋棄機欺氣汽沂淇玘琦琪璂璣畸畿碁磯祁祇祈祺箕紀綺羈耆耭肌記譏豈起錡錤飢饑騎騏驥麒緊佶吉拮桔金喫儺喇奈娜懦懶拏拿癩",5,"那樂",4,"諾酪駱亂卵暖欄煖爛蘭難鸞捏捺南嵐枏楠湳濫男藍襤拉"],
+["d2a1","納臘蠟衲囊娘廊",4,"乃來內奈柰耐冷女年撚秊念恬拈捻寧寗努勞奴弩怒擄櫓爐瑙盧",5,"駑魯",10,"濃籠聾膿農惱牢磊腦賂雷尿壘",7,"嫩訥杻紐勒",5,"能菱陵尼泥匿溺多茶"],
+["d3a1","丹亶但單團壇彖斷旦檀段湍短端簞緞蛋袒鄲鍛撻澾獺疸達啖坍憺擔曇淡湛潭澹痰聃膽蕁覃談譚錟沓畓答踏遝唐堂塘幢戇撞棠當糖螳黨代垈坮大對岱帶待戴擡玳臺袋貸隊黛宅德悳倒刀到圖堵塗導屠島嶋度徒悼挑掉搗桃"],
+["d4a1","棹櫂淘渡滔濤燾盜睹禱稻萄覩賭跳蹈逃途道都鍍陶韜毒瀆牘犢獨督禿篤纛讀墩惇敦旽暾沌焞燉豚頓乭突仝冬凍動同憧東桐棟洞潼疼瞳童胴董銅兜斗杜枓痘竇荳讀豆逗頭屯臀芚遁遯鈍得嶝橙燈登等藤謄鄧騰喇懶拏癩羅"],
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+["eaa1","運隕雲韻蔚鬱亐熊雄元原員圓園垣媛嫄寃怨愿援沅洹湲源爰猿瑗苑袁轅遠阮院願鴛月越鉞位偉僞危圍委威尉慰暐渭爲瑋緯胃萎葦蔿蝟衛褘謂違韋魏乳侑儒兪劉唯喩孺宥幼幽庾悠惟愈愉揄攸有杻柔柚柳楡楢油洧流游溜"],
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+["eca1","議醫二以伊利吏夷姨履已弛彛怡易李梨泥爾珥理異痍痢移罹而耳肄苡荑裏裡貽貳邇里離飴餌匿溺瀷益翊翌翼謚人仁刃印吝咽因姻寅引忍湮燐璘絪茵藺蚓認隣靭靷鱗麟一佚佾壹日溢逸鎰馹任壬妊姙恁林淋稔臨荏賃入卄"],
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+["eea1","障再哉在宰才材栽梓渽滓災縡裁財載齋齎爭箏諍錚佇低儲咀姐底抵杵楮樗沮渚狙猪疽箸紵苧菹著藷詛貯躇這邸雎齟勣吊嫡寂摘敵滴狄炙的積笛籍績翟荻謫賊赤跡蹟迪迹適鏑佃佺傳全典前剪塡塼奠專展廛悛戰栓殿氈澱"],
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+["f0a1","靜頂鼎制劑啼堤帝弟悌提梯濟祭第臍薺製諸蹄醍除際霽題齊俎兆凋助嘲弔彫措操早晁曺曹朝條棗槽漕潮照燥爪璪眺祖祚租稠窕粗糟組繰肇藻蚤詔調趙躁造遭釣阻雕鳥族簇足鏃存尊卒拙猝倧宗從悰慫棕淙琮種終綜縱腫"],
+["f1a1","踪踵鍾鐘佐坐左座挫罪主住侏做姝胄呪周嗾奏宙州廚晝朱柱株注洲湊澍炷珠疇籌紂紬綢舟蛛註誅走躊輳週酎酒鑄駐竹粥俊儁准埈寯峻晙樽浚準濬焌畯竣蠢逡遵雋駿茁中仲衆重卽櫛楫汁葺增憎曾拯烝甑症繒蒸證贈之只"],
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+["f3a1","鏶集徵懲澄且侘借叉嗟嵯差次此磋箚茶蹉車遮捉搾着窄錯鑿齪撰澯燦璨瓚竄簒纂粲纘讚贊鑽餐饌刹察擦札紮僭參塹慘慙懺斬站讒讖倉倡創唱娼廠彰愴敞昌昶暢槍滄漲猖瘡窓脹艙菖蒼債埰寀寨彩採砦綵菜蔡采釵冊柵策"],
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diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp950.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp950.json
new file mode 100644
index 00000000..d8bc8717
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/cp950.json
@@ -0,0 +1,177 @@
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+["e0a1","遄遉逽鄐鄍鄏鄑鄖鄔鄋鄎酮酯鉈鉒鈰鈺鉦鈳鉥鉞銃鈮鉊鉆鉭鉬鉏鉠鉧鉯鈶鉡鉰鈱鉔鉣鉐鉲鉎鉓鉌鉖鈲閟閜閞閛隒隓隑隗雎雺雽雸雵靳靷靸靲頏頍頎颬飶飹馯馲馰馵骭骫魛鳪鳭鳧麀黽僦僔僗僨僳僛僪僝僤僓僬僰僯僣僠"],
+["e140","凘劀劁勩勫匰厬嘧嘕嘌嘒嗼嘏嘜嘁嘓嘂嗺嘝嘄嗿嗹墉塼墐墘墆墁塿塴墋塺墇墑墎塶墂墈塻墔墏壾奫嫜嫮嫥嫕嫪嫚嫭嫫嫳嫢嫠嫛嫬嫞嫝嫙嫨嫟孷寠"],
+["e1a1","寣屣嶂嶀嵽嶆嵺嶁嵷嶊嶉嶈嵾嵼嶍嵹嵿幘幙幓廘廑廗廎廜廕廙廒廔彄彃彯徶愬愨慁慞慱慳慒慓慲慬憀慴慔慺慛慥愻慪慡慖戩戧戫搫摍摛摝摴摶摲摳摽摵摦撦摎撂摞摜摋摓摠摐摿搿摬摫摙摥摷敳斠暡暠暟朅朄朢榱榶槉"],
+["e240","榠槎榖榰榬榼榑榙榎榧榍榩榾榯榿槄榽榤槔榹槊榚槏榳榓榪榡榞槙榗榐槂榵榥槆歊歍歋殞殟殠毃毄毾滎滵滱漃漥滸漷滻漮漉潎漙漚漧漘漻漒滭漊"],
+["e2a1","漶潳滹滮漭潀漰漼漵滫漇漎潃漅滽滶漹漜滼漺漟漍漞漈漡熇熐熉熀熅熂熏煻熆熁熗牄牓犗犕犓獃獍獑獌瑢瑳瑱瑵瑲瑧瑮甀甂甃畽疐瘖瘈瘌瘕瘑瘊瘔皸瞁睼瞅瞂睮瞀睯睾瞃碲碪碴碭碨硾碫碞碥碠碬碢碤禘禊禋禖禕禔禓"],
+["e340","禗禈禒禐稫穊稰稯稨稦窨窫窬竮箈箜箊箑箐箖箍箌箛箎箅箘劄箙箤箂粻粿粼粺綧綷緂綣綪緁緀緅綝緎緄緆緋緌綯綹綖綼綟綦綮綩綡緉罳翢翣翥翞"],
+["e3a1","耤聝聜膉膆膃膇膍膌膋舕蒗蒤蒡蒟蒺蓎蓂蒬蒮蒫蒹蒴蓁蓍蒪蒚蒱蓐蒝蒧蒻蒢蒔蓇蓌蒛蒩蒯蒨蓖蒘蒶蓏蒠蓗蓔蓒蓛蒰蒑虡蜳蜣蜨蝫蝀蜮蜞蜡蜙蜛蝃蜬蝁蜾蝆蜠蜲蜪蜭蜼蜒蜺蜱蜵蝂蜦蜧蜸蜤蜚蜰蜑裷裧裱裲裺裾裮裼裶裻"],
+["e440","裰裬裫覝覡覟覞觩觫觨誫誙誋誒誏誖谽豨豩賕賏賗趖踉踂跿踍跽踊踃踇踆踅跾踀踄輐輑輎輍鄣鄜鄠鄢鄟鄝鄚鄤鄡鄛酺酲酹酳銥銤鉶銛鉺銠銔銪銍"],
+["e4a1","銦銚銫鉹銗鉿銣鋮銎銂銕銢鉽銈銡銊銆銌銙銧鉾銇銩銝銋鈭隞隡雿靘靽靺靾鞃鞀鞂靻鞄鞁靿韎韍頖颭颮餂餀餇馝馜駃馹馻馺駂馽駇骱髣髧鬾鬿魠魡魟鳱鳲鳵麧僿儃儰僸儆儇僶僾儋儌僽儊劋劌勱勯噈噂噌嘵噁噊噉噆噘"],
+["e540","噚噀嘳嘽嘬嘾嘸嘪嘺圚墫墝墱墠墣墯墬墥墡壿嫿嫴嫽嫷嫶嬃嫸嬂嫹嬁嬇嬅嬏屧嶙嶗嶟嶒嶢嶓嶕嶠嶜嶡嶚嶞幩幝幠幜緳廛廞廡彉徲憋憃慹憱憰憢憉"],
+["e5a1","憛憓憯憭憟憒憪憡憍慦憳戭摮摰撖撠撅撗撜撏撋撊撌撣撟摨撱撘敶敺敹敻斲斳暵暰暩暲暷暪暯樀樆樗槥槸樕槱槤樠槿槬槢樛樝槾樧槲槮樔槷槧橀樈槦槻樍槼槫樉樄樘樥樏槶樦樇槴樖歑殥殣殢殦氁氀毿氂潁漦潾澇濆澒"],
+["e640","澍澉澌潢潏澅潚澖潶潬澂潕潲潒潐潗澔澓潝漀潡潫潽潧澐潓澋潩潿澕潣潷潪潻熲熯熛熰熠熚熩熵熝熥熞熤熡熪熜熧熳犘犚獘獒獞獟獠獝獛獡獚獙"],
+["e6a1","獢璇璉璊璆璁瑽璅璈瑼瑹甈甇畾瘥瘞瘙瘝瘜瘣瘚瘨瘛皜皝皞皛瞍瞏瞉瞈磍碻磏磌磑磎磔磈磃磄磉禚禡禠禜禢禛歶稹窲窴窳箷篋箾箬篎箯箹篊箵糅糈糌糋緷緛緪緧緗緡縃緺緦緶緱緰緮緟罶羬羰羭翭翫翪翬翦翨聤聧膣膟"],
+["e740","膞膕膢膙膗舖艏艓艒艐艎艑蔤蔻蔏蔀蔩蔎蔉蔍蔟蔊蔧蔜蓻蔫蓺蔈蔌蓴蔪蓲蔕蓷蓫蓳蓼蔒蓪蓩蔖蓾蔨蔝蔮蔂蓽蔞蓶蔱蔦蓧蓨蓰蓯蓹蔘蔠蔰蔋蔙蔯虢"],
+["e7a1","蝖蝣蝤蝷蟡蝳蝘蝔蝛蝒蝡蝚蝑蝞蝭蝪蝐蝎蝟蝝蝯蝬蝺蝮蝜蝥蝏蝻蝵蝢蝧蝩衚褅褌褔褋褗褘褙褆褖褑褎褉覢覤覣觭觰觬諏諆誸諓諑諔諕誻諗誾諀諅諘諃誺誽諙谾豍貏賥賟賙賨賚賝賧趠趜趡趛踠踣踥踤踮踕踛踖踑踙踦踧"],
+["e840","踔踒踘踓踜踗踚輬輤輘輚輠輣輖輗遳遰遯遧遫鄯鄫鄩鄪鄲鄦鄮醅醆醊醁醂醄醀鋐鋃鋄鋀鋙銶鋏鋱鋟鋘鋩鋗鋝鋌鋯鋂鋨鋊鋈鋎鋦鋍鋕鋉鋠鋞鋧鋑鋓"],
+["e8a1","銵鋡鋆銴镼閬閫閮閰隤隢雓霅霈霂靚鞊鞎鞈韐韏頞頝頦頩頨頠頛頧颲餈飺餑餔餖餗餕駜駍駏駓駔駎駉駖駘駋駗駌骳髬髫髳髲髱魆魃魧魴魱魦魶魵魰魨魤魬鳼鳺鳽鳿鳷鴇鴀鳹鳻鴈鴅鴄麃黓鼏鼐儜儓儗儚儑凞匴叡噰噠噮"],
+["e940","噳噦噣噭噲噞噷圜圛壈墽壉墿墺壂墼壆嬗嬙嬛嬡嬔嬓嬐嬖嬨嬚嬠嬞寯嶬嶱嶩嶧嶵嶰嶮嶪嶨嶲嶭嶯嶴幧幨幦幯廩廧廦廨廥彋徼憝憨憖懅憴懆懁懌憺"],
+["e9a1","憿憸憌擗擖擐擏擉撽撉擃擛擳擙攳敿敼斢曈暾曀曊曋曏暽暻暺曌朣樴橦橉橧樲橨樾橝橭橶橛橑樨橚樻樿橁橪橤橐橏橔橯橩橠樼橞橖橕橍橎橆歕歔歖殧殪殫毈毇氄氃氆澭濋澣濇澼濎濈潞濄澽澞濊澨瀄澥澮澺澬澪濏澿澸"],
+["ea40","澢濉澫濍澯澲澰燅燂熿熸燖燀燁燋燔燊燇燏熽燘熼燆燚燛犝犞獩獦獧獬獥獫獪瑿璚璠璔璒璕璡甋疀瘯瘭瘱瘽瘳瘼瘵瘲瘰皻盦瞚瞝瞡瞜瞛瞢瞣瞕瞙"],
+["eaa1","瞗磝磩磥磪磞磣磛磡磢磭磟磠禤穄穈穇窶窸窵窱窷篞篣篧篝篕篥篚篨篹篔篪篢篜篫篘篟糒糔糗糐糑縒縡縗縌縟縠縓縎縜縕縚縢縋縏縖縍縔縥縤罃罻罼罺羱翯耪耩聬膱膦膮膹膵膫膰膬膴膲膷膧臲艕艖艗蕖蕅蕫蕍蕓蕡蕘"],
+["eb40","蕀蕆蕤蕁蕢蕄蕑蕇蕣蔾蕛蕱蕎蕮蕵蕕蕧蕠薌蕦蕝蕔蕥蕬虣虥虤螛螏螗螓螒螈螁螖螘蝹螇螣螅螐螑螝螄螔螜螚螉褞褦褰褭褮褧褱褢褩褣褯褬褟觱諠"],
+["eba1","諢諲諴諵諝謔諤諟諰諈諞諡諨諿諯諻貑貒貐賵賮賱賰賳赬赮趥趧踳踾踸蹀蹅踶踼踽蹁踰踿躽輶輮輵輲輹輷輴遶遹遻邆郺鄳鄵鄶醓醐醑醍醏錧錞錈錟錆錏鍺錸錼錛錣錒錁鍆錭錎錍鋋錝鋺錥錓鋹鋷錴錂錤鋿錩錹錵錪錔錌"],
+["ec40","錋鋾錉錀鋻錖閼闍閾閹閺閶閿閵閽隩雔霋霒霐鞙鞗鞔韰韸頵頯頲餤餟餧餩馞駮駬駥駤駰駣駪駩駧骹骿骴骻髶髺髹髷鬳鮀鮅鮇魼魾魻鮂鮓鮒鮐魺鮕"],
+["eca1","魽鮈鴥鴗鴠鴞鴔鴩鴝鴘鴢鴐鴙鴟麈麆麇麮麭黕黖黺鼒鼽儦儥儢儤儠儩勴嚓嚌嚍嚆嚄嚃噾嚂噿嚁壖壔壏壒嬭嬥嬲嬣嬬嬧嬦嬯嬮孻寱寲嶷幬幪徾徻懃憵憼懧懠懥懤懨懞擯擩擣擫擤擨斁斀斶旚曒檍檖檁檥檉檟檛檡檞檇檓檎"],
+["ed40","檕檃檨檤檑橿檦檚檅檌檒歛殭氉濌澩濴濔濣濜濭濧濦濞濲濝濢濨燡燱燨燲燤燰燢獳獮獯璗璲璫璐璪璭璱璥璯甐甑甒甏疄癃癈癉癇皤盩瞵瞫瞲瞷瞶"],
+["eda1","瞴瞱瞨矰磳磽礂磻磼磲礅磹磾礄禫禨穜穛穖穘穔穚窾竀竁簅簏篲簀篿篻簎篴簋篳簂簉簃簁篸篽簆篰篱簐簊糨縭縼繂縳顈縸縪繉繀繇縩繌縰縻縶繄縺罅罿罾罽翴翲耬膻臄臌臊臅臇膼臩艛艚艜薃薀薏薧薕薠薋薣蕻薤薚薞"],
+["ee40","蕷蕼薉薡蕺蕸蕗薎薖薆薍薙薝薁薢薂薈薅蕹蕶薘薐薟虨螾螪螭蟅螰螬螹螵螼螮蟉蟃蟂蟌螷螯蟄蟊螴螶螿螸螽蟞螲褵褳褼褾襁襒褷襂覭覯覮觲觳謞"],
+["eea1","謘謖謑謅謋謢謏謒謕謇謍謈謆謜謓謚豏豰豲豱豯貕貔賹赯蹎蹍蹓蹐蹌蹇轃轀邅遾鄸醚醢醛醙醟醡醝醠鎡鎃鎯鍤鍖鍇鍼鍘鍜鍶鍉鍐鍑鍠鍭鎏鍌鍪鍹鍗鍕鍒鍏鍱鍷鍻鍡鍞鍣鍧鎀鍎鍙闇闀闉闃闅閷隮隰隬霠霟霘霝霙鞚鞡鞜"],
+["ef40","鞞鞝韕韔韱顁顄顊顉顅顃餥餫餬餪餳餲餯餭餱餰馘馣馡騂駺駴駷駹駸駶駻駽駾駼騃骾髾髽鬁髼魈鮚鮨鮞鮛鮦鮡鮥鮤鮆鮢鮠鮯鴳鵁鵧鴶鴮鴯鴱鴸鴰"],
+["efa1","鵅鵂鵃鴾鴷鵀鴽翵鴭麊麉麍麰黈黚黻黿鼤鼣鼢齔龠儱儭儮嚘嚜嚗嚚嚝嚙奰嬼屩屪巀幭幮懘懟懭懮懱懪懰懫懖懩擿攄擽擸攁攃擼斔旛曚曛曘櫅檹檽櫡櫆檺檶檷櫇檴檭歞毉氋瀇瀌瀍瀁瀅瀔瀎濿瀀濻瀦濼濷瀊爁燿燹爃燽獶"],
+["f040","璸瓀璵瓁璾璶璻瓂甔甓癜癤癙癐癓癗癚皦皽盬矂瞺磿礌礓礔礉礐礒礑禭禬穟簜簩簙簠簟簭簝簦簨簢簥簰繜繐繖繣繘繢繟繑繠繗繓羵羳翷翸聵臑臒"],
+["f0a1","臐艟艞薴藆藀藃藂薳薵薽藇藄薿藋藎藈藅薱薶藒蘤薸薷薾虩蟧蟦蟢蟛蟫蟪蟥蟟蟳蟤蟔蟜蟓蟭蟘蟣螤蟗蟙蠁蟴蟨蟝襓襋襏襌襆襐襑襉謪謧謣謳謰謵譇謯謼謾謱謥謷謦謶謮謤謻謽謺豂豵貙貘貗賾贄贂贀蹜蹢蹠蹗蹖蹞蹥蹧"],
+["f140","蹛蹚蹡蹝蹩蹔轆轇轈轋鄨鄺鄻鄾醨醥醧醯醪鎵鎌鎒鎷鎛鎝鎉鎧鎎鎪鎞鎦鎕鎈鎙鎟鎍鎱鎑鎲鎤鎨鎴鎣鎥闒闓闑隳雗雚巂雟雘雝霣霢霥鞬鞮鞨鞫鞤鞪"],
+["f1a1","鞢鞥韗韙韖韘韺顐顑顒颸饁餼餺騏騋騉騍騄騑騊騅騇騆髀髜鬈鬄鬅鬩鬵魊魌魋鯇鯆鯃鮿鯁鮵鮸鯓鮶鯄鮹鮽鵜鵓鵏鵊鵛鵋鵙鵖鵌鵗鵒鵔鵟鵘鵚麎麌黟鼁鼀鼖鼥鼫鼪鼩鼨齌齕儴儵劖勷厴嚫嚭嚦嚧嚪嚬壚壝壛夒嬽嬾嬿巃幰"],
+["f240","徿懻攇攐攍攉攌攎斄旞旝曞櫧櫠櫌櫑櫙櫋櫟櫜櫐櫫櫏櫍櫞歠殰氌瀙瀧瀠瀖瀫瀡瀢瀣瀩瀗瀤瀜瀪爌爊爇爂爅犥犦犤犣犡瓋瓅璷瓃甖癠矉矊矄矱礝礛"],
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+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/eucjp.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/eucjp.json
new file mode 100644
index 00000000..4fa61ca1
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/eucjp.json
@@ -0,0 +1,182 @@
+[
+["0","\u0000",127],
+["8ea1","｡",62],
+["a1a1"," 、。，．・：；？！゛゜´｀¨＾￣＿ヽヾゝゞ〃仝々〆〇ー―‐／＼～∥｜…‥‘’“”（）〔〕［］｛｝〈",9,"＋－±×÷＝≠＜＞≦≧∞∴♂♀°′″℃￥＄￠￡％＃＆＊＠§☆★○●◎◇"],
+["a2a1","◆□■△▲▽▼※〒→←↑↓〓"],
+["a2ba","∈∋⊆⊇⊂⊃∪∩"],
+["a2ca","∧∨￢⇒⇔∀∃"],
+["a2dc","∠⊥⌒∂∇≡≒≪≫√∽∝∵∫∬"],
+["a2f2","ʼn♯♭♪†‡¶"],
+["a2fe","◯"],
+["a3b0","０",9],
+["a3c1","Ａ",25],
+["a3e1","ａ",25],
+["a4a1","ぁ",82],
+["a5a1","ァ",85],
+["a6a1","Α",16,"Σ",6],
+["a6c1","α",16,"σ",6],
+["a7a1","А",5,"ЁЖ",25],
+["a7d1","а",5,"ёж",25],
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+["ada1","①",19,"Ⅰ",9],
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+["addf","㍻〝〟№㏍℡㊤",4,"㈱㈲㈹㍾㍽㍼≒≡∫∮∑√⊥∠∟⊿∵∩∪"],
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+["b1a1","院陰隠韻吋右宇烏羽迂雨卯鵜窺丑碓臼渦嘘唄欝蔚鰻姥厩浦瓜閏噂云運雲荏餌叡営嬰影映曳栄永泳洩瑛盈穎頴英衛詠鋭液疫益駅悦謁越閲榎厭円園堰奄宴延怨掩援沿演炎焔煙燕猿縁艶苑薗遠鉛鴛塩於汚甥凹央奥往応"],
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+["baa1","此頃今困坤墾婚恨懇昏昆根梱混痕紺艮魂些佐叉唆嵯左差査沙瑳砂詐鎖裟坐座挫債催再最哉塞妻宰彩才採栽歳済災采犀砕砦祭斎細菜裁載際剤在材罪財冴坂阪堺榊肴咲崎埼碕鷺作削咋搾昨朔柵窄策索錯桜鮭笹匙冊刷"],
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+["bca1","次滋治爾璽痔磁示而耳自蒔辞汐鹿式識鴫竺軸宍雫七叱執失嫉室悉湿漆疾質実蔀篠偲柴芝屡蕊縞舎写射捨赦斜煮社紗者謝車遮蛇邪借勺尺杓灼爵酌釈錫若寂弱惹主取守手朱殊狩珠種腫趣酒首儒受呪寿授樹綬需囚収周"],
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+["c1a1","繊羨腺舛船薦詮賎践選遷銭銑閃鮮前善漸然全禅繕膳糎噌塑岨措曾曽楚狙疏疎礎祖租粗素組蘇訴阻遡鼠僧創双叢倉喪壮奏爽宋層匝惣想捜掃挿掻操早曹巣槍槽漕燥争痩相窓糟総綜聡草荘葬蒼藻装走送遭鎗霜騒像増憎"],
+["c2a1","臓蔵贈造促側則即息捉束測足速俗属賊族続卒袖其揃存孫尊損村遜他多太汰詑唾堕妥惰打柁舵楕陀駄騨体堆対耐岱帯待怠態戴替泰滞胎腿苔袋貸退逮隊黛鯛代台大第醍題鷹滝瀧卓啄宅托択拓沢濯琢託鐸濁諾茸凧蛸只"],
+["c3a1","叩但達辰奪脱巽竪辿棚谷狸鱈樽誰丹単嘆坦担探旦歎淡湛炭短端箪綻耽胆蛋誕鍛団壇弾断暖檀段男談値知地弛恥智池痴稚置致蜘遅馳築畜竹筑蓄逐秩窒茶嫡着中仲宙忠抽昼柱注虫衷註酎鋳駐樗瀦猪苧著貯丁兆凋喋寵"],
+["c4a1","帖帳庁弔張彫徴懲挑暢朝潮牒町眺聴脹腸蝶調諜超跳銚長頂鳥勅捗直朕沈珍賃鎮陳津墜椎槌追鎚痛通塚栂掴槻佃漬柘辻蔦綴鍔椿潰坪壷嬬紬爪吊釣鶴亭低停偵剃貞呈堤定帝底庭廷弟悌抵挺提梯汀碇禎程締艇訂諦蹄逓"],
+["c5a1","邸鄭釘鼎泥摘擢敵滴的笛適鏑溺哲徹撤轍迭鉄典填天展店添纏甜貼転顛点伝殿澱田電兎吐堵塗妬屠徒斗杜渡登菟賭途都鍍砥砺努度土奴怒倒党冬凍刀唐塔塘套宕島嶋悼投搭東桃梼棟盗淘湯涛灯燈当痘祷等答筒糖統到"],
+["c6a1","董蕩藤討謄豆踏逃透鐙陶頭騰闘働動同堂導憧撞洞瞳童胴萄道銅峠鴇匿得徳涜特督禿篤毒独読栃橡凸突椴届鳶苫寅酉瀞噸屯惇敦沌豚遁頓呑曇鈍奈那内乍凪薙謎灘捺鍋楢馴縄畷南楠軟難汝二尼弐迩匂賑肉虹廿日乳入"],
+["c7a1","如尿韮任妊忍認濡禰祢寧葱猫熱年念捻撚燃粘乃廼之埜嚢悩濃納能脳膿農覗蚤巴把播覇杷波派琶破婆罵芭馬俳廃拝排敗杯盃牌背肺輩配倍培媒梅楳煤狽買売賠陪這蝿秤矧萩伯剥博拍柏泊白箔粕舶薄迫曝漠爆縛莫駁麦"],
+["c8a1","函箱硲箸肇筈櫨幡肌畑畠八鉢溌発醗髪伐罰抜筏閥鳩噺塙蛤隼伴判半反叛帆搬斑板氾汎版犯班畔繁般藩販範釆煩頒飯挽晩番盤磐蕃蛮匪卑否妃庇彼悲扉批披斐比泌疲皮碑秘緋罷肥被誹費避非飛樋簸備尾微枇毘琵眉美"],
+["c9a1","鼻柊稗匹疋髭彦膝菱肘弼必畢筆逼桧姫媛紐百謬俵彪標氷漂瓢票表評豹廟描病秒苗錨鋲蒜蛭鰭品彬斌浜瀕貧賓頻敏瓶不付埠夫婦富冨布府怖扶敷斧普浮父符腐膚芙譜負賦赴阜附侮撫武舞葡蕪部封楓風葺蕗伏副復幅服"],
+["caa1","福腹複覆淵弗払沸仏物鮒分吻噴墳憤扮焚奮粉糞紛雰文聞丙併兵塀幣平弊柄並蔽閉陛米頁僻壁癖碧別瞥蔑箆偏変片篇編辺返遍便勉娩弁鞭保舗鋪圃捕歩甫補輔穂募墓慕戊暮母簿菩倣俸包呆報奉宝峰峯崩庖抱捧放方朋"],
+["cba1","法泡烹砲縫胞芳萌蓬蜂褒訪豊邦鋒飽鳳鵬乏亡傍剖坊妨帽忘忙房暴望某棒冒紡肪膨謀貌貿鉾防吠頬北僕卜墨撲朴牧睦穆釦勃没殆堀幌奔本翻凡盆摩磨魔麻埋妹昧枚毎哩槙幕膜枕鮪柾鱒桝亦俣又抹末沫迄侭繭麿万慢満"],
+["cca1","漫蔓味未魅巳箕岬密蜜湊蓑稔脈妙粍民眠務夢無牟矛霧鵡椋婿娘冥名命明盟迷銘鳴姪牝滅免棉綿緬面麺摸模茂妄孟毛猛盲網耗蒙儲木黙目杢勿餅尤戻籾貰問悶紋門匁也冶夜爺耶野弥矢厄役約薬訳躍靖柳薮鑓愉愈油癒"],
+["cda1","諭輸唯佑優勇友宥幽悠憂揖有柚湧涌猶猷由祐裕誘遊邑郵雄融夕予余与誉輿預傭幼妖容庸揚揺擁曜楊様洋溶熔用窯羊耀葉蓉要謡踊遥陽養慾抑欲沃浴翌翼淀羅螺裸来莱頼雷洛絡落酪乱卵嵐欄濫藍蘭覧利吏履李梨理璃"],
+["cea1","痢裏裡里離陸律率立葎掠略劉流溜琉留硫粒隆竜龍侶慮旅虜了亮僚両凌寮料梁涼猟療瞭稜糧良諒遼量陵領力緑倫厘林淋燐琳臨輪隣鱗麟瑠塁涙累類令伶例冷励嶺怜玲礼苓鈴隷零霊麗齢暦歴列劣烈裂廉恋憐漣煉簾練聯"],
+["cfa1","蓮連錬呂魯櫓炉賂路露労婁廊弄朗楼榔浪漏牢狼篭老聾蝋郎六麓禄肋録論倭和話歪賄脇惑枠鷲亙亘鰐詫藁蕨椀湾碗腕"],
+["d0a1","弌丐丕个丱丶丼丿乂乖乘亂亅豫亊舒弍于亞亟亠亢亰亳亶从仍仄仆仂仗仞仭仟价伉佚估佛佝佗佇佶侈侏侘佻佩佰侑佯來侖儘俔俟俎俘俛俑俚俐俤俥倚倨倔倪倥倅伜俶倡倩倬俾俯們倆偃假會偕偐偈做偖偬偸傀傚傅傴傲"],
+["d1a1","僉僊傳僂僖僞僥僭僣僮價僵儉儁儂儖儕儔儚儡儺儷儼儻儿兀兒兌兔兢竸兩兪兮冀冂囘册冉冏冑冓冕冖冤冦冢冩冪冫决冱冲冰况冽凅凉凛几處凩凭凰凵凾刄刋刔刎刧刪刮刳刹剏剄剋剌剞剔剪剴剩剳剿剽劍劔劒剱劈劑辨"],
+["d2a1","辧劬劭劼劵勁勍勗勞勣勦飭勠勳勵勸勹匆匈甸匍匐匏匕匚匣匯匱匳匸區卆卅丗卉卍凖卞卩卮夘卻卷厂厖厠厦厥厮厰厶參簒雙叟曼燮叮叨叭叺吁吽呀听吭吼吮吶吩吝呎咏呵咎呟呱呷呰咒呻咀呶咄咐咆哇咢咸咥咬哄哈咨"],
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+["d5a1","奸妁妝佞侫妣妲姆姨姜妍姙姚娥娟娑娜娉娚婀婬婉娵娶婢婪媚媼媾嫋嫂媽嫣嫗嫦嫩嫖嫺嫻嬌嬋嬖嬲嫐嬪嬶嬾孃孅孀孑孕孚孛孥孩孰孳孵學斈孺宀它宦宸寃寇寉寔寐寤實寢寞寥寫寰寶寳尅將專對尓尠尢尨尸尹屁屆屎屓"],
+["d6a1","屐屏孱屬屮乢屶屹岌岑岔妛岫岻岶岼岷峅岾峇峙峩峽峺峭嶌峪崋崕崗嵜崟崛崑崔崢崚崙崘嵌嵒嵎嵋嵬嵳嵶嶇嶄嶂嶢嶝嶬嶮嶽嶐嶷嶼巉巍巓巒巖巛巫已巵帋帚帙帑帛帶帷幄幃幀幎幗幔幟幢幤幇幵并幺麼广庠廁廂廈廐廏"],
+["d7a1","廖廣廝廚廛廢廡廨廩廬廱廳廰廴廸廾弃弉彝彜弋弑弖弩弭弸彁彈彌彎弯彑彖彗彙彡彭彳彷徃徂彿徊很徑徇從徙徘徠徨徭徼忖忻忤忸忱忝悳忿怡恠怙怐怩怎怱怛怕怫怦怏怺恚恁恪恷恟恊恆恍恣恃恤恂恬恫恙悁悍惧悃悚"],
+["d8a1","悄悛悖悗悒悧悋惡悸惠惓悴忰悽惆悵惘慍愕愆惶惷愀惴惺愃愡惻惱愍愎慇愾愨愧慊愿愼愬愴愽慂慄慳慷慘慙慚慫慴慯慥慱慟慝慓慵憙憖憇憬憔憚憊憑憫憮懌懊應懷懈懃懆憺懋罹懍懦懣懶懺懴懿懽懼懾戀戈戉戍戌戔戛"],
+["d9a1","戞戡截戮戰戲戳扁扎扞扣扛扠扨扼抂抉找抒抓抖拔抃抔拗拑抻拏拿拆擔拈拜拌拊拂拇抛拉挌拮拱挧挂挈拯拵捐挾捍搜捏掖掎掀掫捶掣掏掉掟掵捫捩掾揩揀揆揣揉插揶揄搖搴搆搓搦搶攝搗搨搏摧摯摶摎攪撕撓撥撩撈撼"],
+["daa1","據擒擅擇撻擘擂擱擧舉擠擡抬擣擯攬擶擴擲擺攀擽攘攜攅攤攣攫攴攵攷收攸畋效敖敕敍敘敞敝敲數斂斃變斛斟斫斷旃旆旁旄旌旒旛旙无旡旱杲昊昃旻杳昵昶昴昜晏晄晉晁晞晝晤晧晨晟晢晰暃暈暎暉暄暘暝曁暹曉暾暼"],
+["dba1","曄暸曖曚曠昿曦曩曰曵曷朏朖朞朦朧霸朮朿朶杁朸朷杆杞杠杙杣杤枉杰枩杼杪枌枋枦枡枅枷柯枴柬枳柩枸柤柞柝柢柮枹柎柆柧檜栞框栩桀桍栲桎梳栫桙档桷桿梟梏梭梔條梛梃檮梹桴梵梠梺椏梍桾椁棊椈棘椢椦棡椌棍"],
+["dca1","棔棧棕椶椒椄棗棣椥棹棠棯椨椪椚椣椡棆楹楷楜楸楫楔楾楮椹楴椽楙椰楡楞楝榁楪榲榮槐榿槁槓榾槎寨槊槝榻槃榧樮榑榠榜榕榴槞槨樂樛槿權槹槲槧樅榱樞槭樔槫樊樒櫁樣樓橄樌橲樶橸橇橢橙橦橈樸樢檐檍檠檄檢檣"],
+["dda1","檗蘗檻櫃櫂檸檳檬櫞櫑櫟檪櫚櫪櫻欅蘖櫺欒欖鬱欟欸欷盜欹飮歇歃歉歐歙歔歛歟歡歸歹歿殀殄殃殍殘殕殞殤殪殫殯殲殱殳殷殼毆毋毓毟毬毫毳毯麾氈氓气氛氤氣汞汕汢汪沂沍沚沁沛汾汨汳沒沐泄泱泓沽泗泅泝沮沱沾"],
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+["e0a1","燹燿爍爐爛爨爭爬爰爲爻爼爿牀牆牋牘牴牾犂犁犇犒犖犢犧犹犲狃狆狄狎狒狢狠狡狹狷倏猗猊猜猖猝猴猯猩猥猾獎獏默獗獪獨獰獸獵獻獺珈玳珎玻珀珥珮珞璢琅瑯琥珸琲琺瑕琿瑟瑙瑁瑜瑩瑰瑣瑪瑶瑾璋璞璧瓊瓏瓔珱"],
+["e1a1","瓠瓣瓧瓩瓮瓲瓰瓱瓸瓷甄甃甅甌甎甍甕甓甞甦甬甼畄畍畊畉畛畆畚畩畤畧畫畭畸當疆疇畴疊疉疂疔疚疝疥疣痂疳痃疵疽疸疼疱痍痊痒痙痣痞痾痿痼瘁痰痺痲痳瘋瘍瘉瘟瘧瘠瘡瘢瘤瘴瘰瘻癇癈癆癜癘癡癢癨癩癪癧癬癰"],
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+["8fc9a1","濚濞濨濩濰濵濹濼濽瀀瀅瀆瀇瀍瀗瀠瀣瀯瀴瀷瀹瀼灃灄灈灉灊灋灔灕灝灞灎灤灥灬灮灵灶灾炁炅炆炔",4,"炛炤炫炰炱炴炷烊烑烓烔烕烖烘烜烤烺焃",4,"焋焌焏焞焠焫焭焯焰焱焸煁煅煆煇煊煋煐煒煗煚煜煞煠"],
+["8fcaa1","煨煹熀熅熇熌熒熚熛熠熢熯熰熲熳熺熿燀燁燄燋燌燓燖燙燚燜燸燾爀爇爈爉爓爗爚爝爟爤爫爯爴爸爹牁牂牃牅牎牏牐牓牕牖牚牜牞牠牣牨牫牮牯牱牷牸牻牼牿犄犉犍犎犓犛犨犭犮犱犴犾狁狇狉狌狕狖狘狟狥狳狴狺狻"],
+["8fcba1","狾猂猄猅猇猋猍猒猓猘猙猞猢猤猧猨猬猱猲猵猺猻猽獃獍獐獒獖獘獝獞獟獠獦獧獩獫獬獮獯獱獷獹獼玀玁玃玅玆玎玐玓玕玗玘玜玞玟玠玢玥玦玪玫玭玵玷玹玼玽玿珅珆珉珋珌珏珒珓珖珙珝珡珣珦珧珩珴珵珷珹珺珻珽"],
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+["8fcda1","甒甖甗甠甡甤甧甩甪甯甶甹甽甾甿畀畃畇畈畎畐畒畗畞畟畡畯畱畹",5,"疁疅疐疒疓疕疙疜疢疤疴疺疿痀痁痄痆痌痎痏痗痜痟痠痡痤痧痬痮痯痱痹瘀瘂瘃瘄瘇瘈瘊瘌瘏瘒瘓瘕瘖瘙瘛瘜瘝瘞瘣瘥瘦瘩瘭瘲瘳瘵瘸瘹"],
+["8fcea1","瘺瘼癊癀癁癃癄癅癉癋癕癙癟癤癥癭癮癯癱癴皁皅皌皍皕皛皜皝皟皠皢",6,"皪皭皽盁盅盉盋盌盎盔盙盠盦盨盬盰盱盶盹盼眀眆眊眎眒眔眕眗眙眚眜眢眨眭眮眯眴眵眶眹眽眾睂睅睆睊睍睎睏睒睖睗睜睞睟睠睢"],
+["8fcfa1","睤睧睪睬睰睲睳睴睺睽瞀瞄瞌瞍瞔瞕瞖瞚瞟瞢瞧瞪瞮瞯瞱瞵瞾矃矉矑矒矕矙矞矟矠矤矦矪矬矰矱矴矸矻砅砆砉砍砎砑砝砡砢砣砭砮砰砵砷硃硄硇硈硌硎硒硜硞硠硡硣硤硨硪确硺硾碊碏碔碘碡碝碞碟碤碨碬碭碰碱碲碳"],
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+["8fd1a1","秠秢秥秪秫秭秱秸秼稂稃稇稉稊稌稑稕稛稞稡稧稫稭稯稰稴稵稸稹稺穄穅穇穈穌穕穖穙穜穝穟穠穥穧穪穭穵穸穾窀窂窅窆窊窋窐窑窔窞窠窣窬窳窵窹窻窼竆竉竌竎竑竛竨竩竫竬竱竴竻竽竾笇笔笟笣笧笩笪笫笭笮笯笰"],
+["8fd2a1","笱笴笽笿筀筁筇筎筕筠筤筦筩筪筭筯筲筳筷箄箉箎箐箑箖箛箞箠箥箬箯箰箲箵箶箺箻箼箽篂篅篈篊篔篖篗篙篚篛篨篪篲篴篵篸篹篺篼篾簁簂簃簄簆簉簋簌簎簏簙簛簠簥簦簨簬簱簳簴簶簹簺籆籊籕籑籒籓籙",5],
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+["8fd4a1","綞綦綧綪綳綶綷綹緂",4,"緌緍緎緗緙縀緢緥緦緪緫緭緱緵緶緹緺縈縐縑縕縗縜縝縠縧縨縬縭縯縳縶縿繄繅繇繎繐繒繘繟繡繢繥繫繮繯繳繸繾纁纆纇纊纍纑纕纘纚纝纞缼缻缽缾缿罃罄罇罏罒罓罛罜罝罡罣罤罥罦罭"],
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+["8fd6a1","胰胲胳胶胹胺胾脃脋脖脗脘脜脞脠脤脧脬脰脵脺脼腅腇腊腌腒腗腠腡腧腨腩腭腯腷膁膐膄膅膆膋膎膖膘膛膞膢膮膲膴膻臋臃臅臊臎臏臕臗臛臝臞臡臤臫臬臰臱臲臵臶臸臹臽臿舀舃舏舓舔舙舚舝舡舢舨舲舴舺艃艄艅艆"],
+["8fd7a1","艋艎艏艑艖艜艠艣艧艭艴艻艽艿芀芁芃芄芇芉芊芎芑芔芖芘芚芛芠芡芣芤芧芨芩芪芮芰芲芴芷芺芼芾芿苆苐苕苚苠苢苤苨苪苭苯苶苷苽苾茀茁茇茈茊茋荔茛茝茞茟茡茢茬茭茮茰茳茷茺茼茽荂荃荄荇荍荎荑荕荖荗荰荸"],
+["8fd8a1","荽荿莀莂莄莆莍莒莔莕莘莙莛莜莝莦莧莩莬莾莿菀菇菉菏菐菑菔菝荓菨菪菶菸菹菼萁萆萊萏萑萕萙莭萯萹葅葇葈葊葍葏葑葒葖葘葙葚葜葠葤葥葧葪葰葳葴葶葸葼葽蒁蒅蒒蒓蒕蒞蒦蒨蒩蒪蒯蒱蒴蒺蒽蒾蓀蓂蓇蓈蓌蓏蓓"],
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+["8fdaa1","藿蘀蘄蘅蘍蘎蘐蘑蘒蘘蘙蘛蘞蘡蘧蘩蘶蘸蘺蘼蘽虀虂虆虒虓虖虗虘虙虝虠",4,"虩虬虯虵虶虷虺蚍蚑蚖蚘蚚蚜蚡蚦蚧蚨蚭蚱蚳蚴蚵蚷蚸蚹蚿蛀蛁蛃蛅蛑蛒蛕蛗蛚蛜蛠蛣蛥蛧蚈蛺蛼蛽蜄蜅蜇蜋蜎蜏蜐蜓蜔蜙蜞蜟蜡蜣"],
+["8fdba1","蜨蜮蜯蜱蜲蜹蜺蜼蜽蜾蝀蝃蝅蝍蝘蝝蝡蝤蝥蝯蝱蝲蝻螃",6,"螋螌螐螓螕螗螘螙螞螠螣螧螬螭螮螱螵螾螿蟁蟈蟉蟊蟎蟕蟖蟙蟚蟜蟟蟢蟣蟤蟪蟫蟭蟱蟳蟸蟺蟿蠁蠃蠆蠉蠊蠋蠐蠙蠒蠓蠔蠘蠚蠛蠜蠞蠟蠨蠭蠮蠰蠲蠵"],
+["8fdca1","蠺蠼衁衃衅衈衉衊衋衎衑衕衖衘衚衜衟衠衤衩衱衹衻袀袘袚袛袜袟袠袨袪袺袽袾裀裊",4,"裑裒裓裛裞裧裯裰裱裵裷褁褆褍褎褏褕褖褘褙褚褜褠褦褧褨褰褱褲褵褹褺褾襀襂襅襆襉襏襒襗襚襛襜襡襢襣襫襮襰襳襵襺"],
+["8fdda1","襻襼襽覉覍覐覔覕覛覜覟覠覥覰覴覵覶覷覼觔",4,"觥觩觫觭觱觳觶觹觽觿訄訅訇訏訑訒訔訕訞訠訢訤訦訫訬訯訵訷訽訾詀詃詅詇詉詍詎詓詖詗詘詜詝詡詥詧詵詶詷詹詺詻詾詿誀誃誆誋誏誐誒誖誗誙誟誧誩誮誯誳"],
+["8fdea1","誶誷誻誾諃諆諈諉諊諑諓諔諕諗諝諟諬諰諴諵諶諼諿謅謆謋謑謜謞謟謊謭謰謷謼譂",4,"譈譒譓譔譙譍譞譣譭譶譸譹譼譾讁讄讅讋讍讏讔讕讜讞讟谸谹谽谾豅豇豉豋豏豑豓豔豗豘豛豝豙豣豤豦豨豩豭豳豵豶豻豾貆"],
+["8fdfa1","貇貋貐貒貓貙貛貜貤貹貺賅賆賉賋賏賖賕賙賝賡賨賬賯賰賲賵賷賸賾賿贁贃贉贒贗贛赥赩赬赮赿趂趄趈趍趐趑趕趞趟趠趦趫趬趯趲趵趷趹趻跀跅跆跇跈跊跎跑跔跕跗跙跤跥跧跬跰趼跱跲跴跽踁踄踅踆踋踑踔踖踠踡踢"],
+["8fe0a1","踣踦踧踱踳踶踷踸踹踽蹀蹁蹋蹍蹎蹏蹔蹛蹜蹝蹞蹡蹢蹩蹬蹭蹯蹰蹱蹹蹺蹻躂躃躉躐躒躕躚躛躝躞躢躧躩躭躮躳躵躺躻軀軁軃軄軇軏軑軔軜軨軮軰軱軷軹軺軭輀輂輇輈輏輐輖輗輘輞輠輡輣輥輧輨輬輭輮輴輵輶輷輺轀轁"],
+["8fe1a1","轃轇轏轑",4,"轘轝轞轥辝辠辡辤辥辦辵辶辸达迀迁迆迊迋迍运迒迓迕迠迣迤迨迮迱迵迶迻迾适逄逈逌逘逛逨逩逯逪逬逭逳逴逷逿遃遄遌遛遝遢遦遧遬遰遴遹邅邈邋邌邎邐邕邗邘邙邛邠邡邢邥邰邲邳邴邶邽郌邾郃"],
+["8fe2a1","郄郅郇郈郕郗郘郙郜郝郟郥郒郶郫郯郰郴郾郿鄀鄄鄅鄆鄈鄍鄐鄔鄖鄗鄘鄚鄜鄞鄠鄥鄢鄣鄧鄩鄮鄯鄱鄴鄶鄷鄹鄺鄼鄽酃酇酈酏酓酗酙酚酛酡酤酧酭酴酹酺酻醁醃醅醆醊醎醑醓醔醕醘醞醡醦醨醬醭醮醰醱醲醳醶醻醼醽醿"],
+["8fe3a1","釂釃釅釓釔釗釙釚釞釤釥釩釪釬",5,"釷釹釻釽鈀鈁鈄鈅鈆鈇鈉鈊鈌鈐鈒鈓鈖鈘鈜鈝鈣鈤鈥鈦鈨鈮鈯鈰鈳鈵鈶鈸鈹鈺鈼鈾鉀鉂鉃鉆鉇鉊鉍鉎鉏鉑鉘鉙鉜鉝鉠鉡鉥鉧鉨鉩鉮鉯鉰鉵",4,"鉻鉼鉽鉿銈銉銊銍銎銒銗"],
+["8fe4a1","銙銟銠銤銥銧銨銫銯銲銶銸銺銻銼銽銿",4,"鋅鋆鋇鋈鋋鋌鋍鋎鋐鋓鋕鋗鋘鋙鋜鋝鋟鋠鋡鋣鋥鋧鋨鋬鋮鋰鋹鋻鋿錀錂錈錍錑錔錕錜錝錞錟錡錤錥錧錩錪錳錴錶錷鍇鍈鍉鍐鍑鍒鍕鍗鍘鍚鍞鍤鍥鍧鍩鍪鍭鍯鍰鍱鍳鍴鍶"],
+["8fe5a1","鍺鍽鍿鎀鎁鎂鎈鎊鎋鎍鎏鎒鎕鎘鎛鎞鎡鎣鎤鎦鎨鎫鎴鎵鎶鎺鎩鏁鏄鏅鏆鏇鏉",4,"鏓鏙鏜鏞鏟鏢鏦鏧鏹鏷鏸鏺鏻鏽鐁鐂鐄鐈鐉鐍鐎鐏鐕鐖鐗鐟鐮鐯鐱鐲鐳鐴鐻鐿鐽鑃鑅鑈鑊鑌鑕鑙鑜鑟鑡鑣鑨鑫鑭鑮鑯鑱鑲钄钃镸镹"],
+["8fe6a1","镾閄閈閌閍閎閝閞閟閡閦閩閫閬閴閶閺閽閿闆闈闉闋闐闑闒闓闙闚闝闞闟闠闤闦阝阞阢阤阥阦阬阱阳阷阸阹阺阼阽陁陒陔陖陗陘陡陮陴陻陼陾陿隁隂隃隄隉隑隖隚隝隟隤隥隦隩隮隯隳隺雊雒嶲雘雚雝雞雟雩雯雱雺霂"],
+["8fe7a1","霃霅霉霚霛霝霡霢霣霨霱霳靁靃靊靎靏靕靗靘靚靛靣靧靪靮靳靶靷靸靻靽靿鞀鞉鞕鞖鞗鞙鞚鞞鞟鞢鞬鞮鞱鞲鞵鞶鞸鞹鞺鞼鞾鞿韁韄韅韇韉韊韌韍韎韐韑韔韗韘韙韝韞韠韛韡韤韯韱韴韷韸韺頇頊頙頍頎頔頖頜頞頠頣頦"],
+["8fe8a1","頫頮頯頰頲頳頵頥頾顄顇顊顑顒顓顖顗顙顚顢顣顥顦顪顬颫颭颮颰颴颷颸颺颻颿飂飅飈飌飡飣飥飦飧飪飳飶餂餇餈餑餕餖餗餚餛餜餟餢餦餧餫餱",4,"餹餺餻餼饀饁饆饇饈饍饎饔饘饙饛饜饞饟饠馛馝馟馦馰馱馲馵"],
+["8fe9a1","馹馺馽馿駃駉駓駔駙駚駜駞駧駪駫駬駰駴駵駹駽駾騂騃騄騋騌騐騑騖騞騠騢騣騤騧騭騮騳騵騶騸驇驁驄驊驋驌驎驑驔驖驝骪骬骮骯骲骴骵骶骹骻骾骿髁髃髆髈髎髐髒髕髖髗髛髜髠髤髥髧髩髬髲髳髵髹髺髽髿",4],
+["8feaa1","鬄鬅鬈鬉鬋鬌鬍鬎鬐鬒鬖鬙鬛鬜鬠鬦鬫鬭鬳鬴鬵鬷鬹鬺鬽魈魋魌魕魖魗魛魞魡魣魥魦魨魪",4,"魳魵魷魸魹魿鮀鮄鮅鮆鮇鮉鮊鮋鮍鮏鮐鮔鮚鮝鮞鮦鮧鮩鮬鮰鮱鮲鮷鮸鮻鮼鮾鮿鯁鯇鯈鯎鯐鯗鯘鯝鯟鯥鯧鯪鯫鯯鯳鯷鯸"],
+["8feba1","鯹鯺鯽鯿鰀鰂鰋鰏鰑鰖鰘鰙鰚鰜鰞鰢鰣鰦",4,"鰱鰵鰶鰷鰽鱁鱃鱄鱅鱉鱊鱎鱏鱐鱓鱔鱖鱘鱛鱝鱞鱟鱣鱩鱪鱜鱫鱨鱮鱰鱲鱵鱷鱻鳦鳲鳷鳹鴋鴂鴑鴗鴘鴜鴝鴞鴯鴰鴲鴳鴴鴺鴼鵅鴽鵂鵃鵇鵊鵓鵔鵟鵣鵢鵥鵩鵪鵫鵰鵶鵷鵻"],
+["8feca1","鵼鵾鶃鶄鶆鶊鶍鶎鶒鶓鶕鶖鶗鶘鶡鶪鶬鶮鶱鶵鶹鶼鶿鷃鷇鷉鷊鷔鷕鷖鷗鷚鷞鷟鷠鷥鷧鷩鷫鷮鷰鷳鷴鷾鸊鸂鸇鸎鸐鸑鸒鸕鸖鸙鸜鸝鹺鹻鹼麀麂麃麄麅麇麎麏麖麘麛麞麤麨麬麮麯麰麳麴麵黆黈黋黕黟黤黧黬黭黮黰黱黲黵"],
+["8feda1","黸黿鼂鼃鼉鼏鼐鼑鼒鼔鼖鼗鼙鼚鼛鼟鼢鼦鼪鼫鼯鼱鼲鼴鼷鼹鼺鼼鼽鼿齁齃",4,"齓齕齖齗齘齚齝齞齨齩齭",4,"齳齵齺齽龏龐龑龒龔龖龗龞龡龢龣龥"]
+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gb18030-ranges.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gb18030-ranges.json
new file mode 100644
index 00000000..85c69347
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gb18030-ranges.json
@@ -0,0 +1 @@
+{"uChars":[128,165,169,178,184,216,226,235,238,244,248,251,253,258,276,284,300,325,329,334,364,463,465,467,469,471,473,475,477,506,594,610,712,716,730,930,938,962,970,1026,1104,1106,8209,8215,8218,8222,8231,8241,8244,8246,8252,8365,8452,8454,8458,8471,8482,8556,8570,8596,8602,8713,8720,8722,8726,8731,8737,8740,8742,8748,8751,8760,8766,8777,8781,8787,8802,8808,8816,8854,8858,8870,8896,8979,9322,9372,9548,9588,9616,9622,9634,9652,9662,9672,9676,9680,9702,9735,9738,9793,9795,11906,11909,11913,11917,11928,11944,11947,11951,11956,11960,11964,11979,12284,12292,12312,12319,12330,12351,12436,12447,12535,12543,12586,12842,12850,12964,13200,13215,13218,13253,13263,13267,13270,13384,13428,13727,13839,13851,14617,14703,14801,14816,14964,15183,15471,15585,16471,16736,17208,17325,17330,17374,17623,17997,18018,18212,18218,18301,18318,18760,18811,18814,18820,18823,18844,18848,18872,19576,19620,19738,19887,40870,59244,59336,59367,59413,59417,59423,59431,59437,59443,59452,59460,59478,59493,63789,63866,63894,63976,63986,64016,64018,64021,64025,64034,64037,64042,65074,65093,65107,65112,65127,65132,65375,65510,65536],"gbChars":[0,36,38,45,50,81,89,95,96,100,103,104,105,109,126,133,148,172,175,179,208,306,307,308,309,310,311,312,313,341,428,443,544,545,558,741,742,749,750,805,819,820,7922,7924,7925,7927,7934,7943,7944,7945,7950,8062,8148,8149,8152,8164,8174,8236,8240,8262,8264,8374,8380,8381,8384,8388,8390,8392,8393,8394,8396,8401,8406,8416,8419,8424,8437,8439,8445,8482,8485,8496,8521,8603,8936,8946,9046,9050,9063,9066,9076,9092,9100,9108,9111,9113,9131,9162,9164,9218,9219,11329,11331,11334,11336,11346,11361,11363,11366,11370,11372,11375,11389,11682,11686,11687,11692,11694,11714,11716,11723,11725,11730,11736,11982,11989,12102,12336,12348,12350,12384,12393,12395,12397,12510,12553,12851,12962,12973,13738,13823,13919,13933,14080,14298,14585,14698,15583,15847,16318,16434,16438,16481,16729,17102,17122,17315,17320,17402,17418,17859,17909,17911,17915,17916,17936,17939,17961,18664,18703,18814,18962,19043,33469,33470,33471,33484,33485,33490,33497,33501,33505,33513,33520,33536,33550,37845,37921,37948,38029,38038,38064,38065,38066,38069,38075,38076,38078,39108,39109,39113,39114,39115,39116,39265,39394,189000]}
\ No newline at end of file
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gbk-added.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gbk-added.json
new file mode 100644
index 00000000..b742e368
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/gbk-added.json
@@ -0,0 +1,56 @@
+[
+["a140","",62],
+["a180","",32],
+["a240","",62],
+["a280","",32],
+["a2ab","",5],
+["a2e3","€"],
+["a2ef",""],
+["a2fd",""],
+["a340","",62],
+["a380","",31," "],
+["a440","",62],
+["a480","",32],
+["a4f4","",10],
+["a540","",62],
+["a580","",32],
+["a5f7","",7],
+["a640","",62],
+["a680","",32],
+["a6b9","",7],
+["a6d9","",6],
+["a6ec",""],
+["a6f3",""],
+["a6f6","",8],
+["a740","",62],
+["a780","",32],
+["a7c2","",14],
+["a7f2","",12],
+["a896","",10],
+["a8bc","ḿ"],
+["a8bf","ǹ"],
+["a8c1",""],
+["a8ea","",20],
+["a958",""],
+["a95b",""],
+["a95d",""],
+["a989","〾⿰",11],
+["a997","",12],
+["a9f0","",14],
+["aaa1","",93],
+["aba1","",93],
+["aca1","",93],
+["ada1","",93],
+["aea1","",93],
+["afa1","",93],
+["d7fa","",4],
+["f8a1","",93],
+["f9a1","",93],
+["faa1","",93],
+["fba1","",93],
+["fca1","",93],
+["fda1","",93],
+["fe50","⺁⺄㑳㑇⺈⺋㖞㘚㘎⺌⺗㥮㤘㧏㧟㩳㧐㭎㱮㳠⺧⺪䁖䅟⺮䌷⺳⺶⺷䎱䎬⺻䏝䓖䙡䙌"],
+["fe80","䜣䜩䝼䞍⻊䥇䥺䥽䦂䦃䦅䦆䦟䦛䦷䦶䲣䲟䲠䲡䱷䲢䴓",6,"䶮",93],
+["8135f437",""]
+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/shiftjis.json b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/shiftjis.json
new file mode 100644
index 00000000..5a3a43cf
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/tables/shiftjis.json
@@ -0,0 +1,125 @@
+[
+["0","\u0000",128],
+["a1","｡",62],
+["8140"," 、。，．・：；？！゛゜´｀¨＾￣＿ヽヾゝゞ〃仝々〆〇ー―‐／＼～∥｜…‥‘’“”（）〔〕［］｛｝〈",9,"＋－±×"],
+["8180","÷＝≠＜＞≦≧∞∴♂♀°′″℃￥＄￠￡％＃＆＊＠§☆★○●◎◇◆□■△▲▽▼※〒→←↑↓〓"],
+["81b8","∈∋⊆⊇⊂⊃∪∩"],
+["81c8","∧∨￢⇒⇔∀∃"],
+["81da","∠⊥⌒∂∇≡≒≪≫√∽∝∵∫∬"],
+["81f0","ʼn♯♭♪†‡¶"],
+["81fc","◯"],
+["824f","０",9],
+["8260","Ａ",25],
+["8281","ａ",25],
+["829f","ぁ",82],
+["8340","ァ",62],
+["8380","ム",22],
+["839f","Α",16,"Σ",6],
+["83bf","α",16,"σ",6],
+["8440","А",5,"ЁЖ",25],
+["8470","а",5,"ёж",7],
+["8480","о",17],
+["849f","─│┌┐┘└├┬┤┴┼━┃┏┓┛┗┣┳┫┻╋┠┯┨┷┿┝┰┥┸╂"],
+["8740","①",19,"Ⅰ",9],
+["875f","㍉㌔㌢㍍㌘㌧㌃㌶㍑㍗㌍㌦㌣㌫㍊㌻㎜㎝㎞㎎㎏㏄㎡"],
+["877e","㍻"],
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+["f240","",62],
+["f280","",124],
+["f340","",62],
+["f380","",124],
+["f440","",62],
+["f480","",124],
+["f540","",62],
+["f580","",124],
+["f640","",62],
+["f680","",124],
+["f740","",62],
+["f780","",124],
+["f840","",62],
+["f880","",124],
+["f940",""],
+["fa40","ⅰ",9,"Ⅰ",9,"￢￤＇＂㈱№℡∵纊褜鍈銈蓜俉炻昱棈鋹曻彅丨仡仼伀伃伹佖侒侊侚侔俍偀倢俿倞偆偰偂傔僴僘兊"],
+["fa80","兤冝冾凬刕劜劦勀勛匀匇匤卲厓厲叝﨎咜咊咩哿喆坙坥垬埈埇﨏塚增墲夋奓奛奝奣妤妺孖寀甯寘寬尞岦岺峵崧嵓﨑嵂嵭嶸嶹巐弡弴彧德忞恝悅悊惞惕愠惲愑愷愰憘戓抦揵摠撝擎敎昀昕昻昉昮昞昤晥晗晙晴晳暙暠暲暿曺朎朗杦枻桒柀栁桄棏﨓楨﨔榘槢樰橫橆橳橾櫢櫤毖氿汜沆汯泚洄涇浯"],
+["fb40","涖涬淏淸淲淼渹湜渧渼溿澈澵濵瀅瀇瀨炅炫焏焄煜煆煇凞燁燾犱犾猤猪獷玽珉珖珣珒琇珵琦琪琩琮瑢璉璟甁畯皂皜皞皛皦益睆劯砡硎硤硺礰礼神"],
+["fb80","祥禔福禛竑竧靖竫箞精絈絜綷綠緖繒罇羡羽茁荢荿菇菶葈蒴蕓蕙蕫﨟薰蘒﨡蠇裵訒訷詹誧誾諟諸諶譓譿賰賴贒赶﨣軏﨤逸遧郞都鄕鄧釚釗釞釭釮釤釥鈆鈐鈊鈺鉀鈼鉎鉙鉑鈹鉧銧鉷鉸鋧鋗鋙鋐﨧鋕鋠鋓錥錡鋻﨨錞鋿錝錂鍰鍗鎤鏆鏞鏸鐱鑅鑈閒隆﨩隝隯霳霻靃靍靏靑靕顗顥飯飼餧館馞驎髙"],
+["fc40","髜魵魲鮏鮱鮻鰀鵰鵫鶴鸙黑"]
+]
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf16.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf16.js
new file mode 100644
index 00000000..97d06692
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf16.js
@@ -0,0 +1,197 @@
+"use strict";
+var Buffer = require("safer-buffer").Buffer;
+
+// Note: UTF16-LE (or UCS2) codec is Node.js native. See encodings/internal.js
+
+// == UTF16-BE codec. ==========================================================
+
+exports.utf16be = Utf16BECodec;
+function Utf16BECodec() {
+}
+
+Utf16BECodec.prototype.encoder = Utf16BEEncoder;
+Utf16BECodec.prototype.decoder = Utf16BEDecoder;
+Utf16BECodec.prototype.bomAware = true;
+
+
+// -- Encoding
+
+function Utf16BEEncoder() {
+}
+
+Utf16BEEncoder.prototype.write = function(str) {
+ var buf = Buffer.from(str, 'ucs2');
+ for (var i = 0; i < buf.length; i += 2) {
+ var tmp = buf[i]; buf[i] = buf[i+1]; buf[i+1] = tmp;
+ }
+ return buf;
+}
+
+Utf16BEEncoder.prototype.end = function() {
+}
+
+
+// -- Decoding
+
+function Utf16BEDecoder() {
+ this.overflowByte = -1;
+}
+
+Utf16BEDecoder.prototype.write = function(buf) {
+ if (buf.length == 0)
+ return '';
+
+ var buf2 = Buffer.alloc(buf.length + 1),
+ i = 0, j = 0;
+
+ if (this.overflowByte !== -1) {
+ buf2[0] = buf[0];
+ buf2[1] = this.overflowByte;
+ i = 1; j = 2;
+ }
+
+ for (; i < buf.length-1; i += 2, j+= 2) {
+ buf2[j] = buf[i+1];
+ buf2[j+1] = buf[i];
+ }
+
+ this.overflowByte = (i == buf.length-1) ? buf[buf.length-1] : -1;
+
+ return buf2.slice(0, j).toString('ucs2');
+}
+
+Utf16BEDecoder.prototype.end = function() {
+ this.overflowByte = -1;
+}
+
+
+// == UTF-16 codec =============================================================
+// Decoder chooses automatically from UTF-16LE and UTF-16BE using BOM and space-based heuristic.
+// Defaults to UTF-16LE, as it's prevalent and default in Node.
+// http://en.wikipedia.org/wiki/UTF-16 and http://encoding.spec.whatwg.org/#utf-16le
+// Decoder default can be changed: iconv.decode(buf, 'utf16', {defaultEncoding: 'utf-16be'});
+
+// Encoder uses UTF-16LE and prepends BOM (which can be overridden with addBOM: false).
+
+exports.utf16 = Utf16Codec;
+function Utf16Codec(codecOptions, iconv) {
+ this.iconv = iconv;
+}
+
+Utf16Codec.prototype.encoder = Utf16Encoder;
+Utf16Codec.prototype.decoder = Utf16Decoder;
+
+
+// -- Encoding (pass-through)
+
+function Utf16Encoder(options, codec) {
+ options = options || {};
+ if (options.addBOM === undefined)
+ options.addBOM = true;
+ this.encoder = codec.iconv.getEncoder('utf-16le', options);
+}
+
+Utf16Encoder.prototype.write = function(str) {
+ return this.encoder.write(str);
+}
+
+Utf16Encoder.prototype.end = function() {
+ return this.encoder.end();
+}
+
+
+// -- Decoding
+
+function Utf16Decoder(options, codec) {
+ this.decoder = null;
+ this.initialBufs = [];
+ this.initialBufsLen = 0;
+
+ this.options = options || {};
+ this.iconv = codec.iconv;
+}
+
+Utf16Decoder.prototype.write = function(buf) {
+ if (!this.decoder) {
+ // Codec is not chosen yet. Accumulate initial bytes.
+ this.initialBufs.push(buf);
+ this.initialBufsLen += buf.length;
+
+ if (this.initialBufsLen < 16) // We need more bytes to use space heuristic (see below)
+ return '';
+
+ // We have enough bytes -> detect endianness.
+ var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
+ this.decoder = this.iconv.getDecoder(encoding, this.options);
+
+ var resStr = '';
+ for (var i = 0; i < this.initialBufs.length; i++)
+ resStr += this.decoder.write(this.initialBufs[i]);
+
+ this.initialBufs.length = this.initialBufsLen = 0;
+ return resStr;
+ }
+
+ return this.decoder.write(buf);
+}
+
+Utf16Decoder.prototype.end = function() {
+ if (!this.decoder) {
+ var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
+ this.decoder = this.iconv.getDecoder(encoding, this.options);
+
+ var resStr = '';
+ for (var i = 0; i < this.initialBufs.length; i++)
+ resStr += this.decoder.write(this.initialBufs[i]);
+
+ var trail = this.decoder.end();
+ if (trail)
+ resStr += trail;
+
+ this.initialBufs.length = this.initialBufsLen = 0;
+ return resStr;
+ }
+ return this.decoder.end();
+}
+
+function detectEncoding(bufs, defaultEncoding) {
+ var b = [];
+ var charsProcessed = 0;
+ var asciiCharsLE = 0, asciiCharsBE = 0; // Number of ASCII chars when decoded as LE or BE.
+
+ outer_loop:
+ for (var i = 0; i < bufs.length; i++) {
+ var buf = bufs[i];
+ for (var j = 0; j < buf.length; j++) {
+ b.push(buf[j]);
+ if (b.length === 2) {
+ if (charsProcessed === 0) {
+ // Check BOM first.
+ if (b[0] === 0xFF && b[1] === 0xFE) return 'utf-16le';
+ if (b[0] === 0xFE && b[1] === 0xFF) return 'utf-16be';
+ }
+
+ if (b[0] === 0 && b[1] !== 0) asciiCharsBE++;
+ if (b[0] !== 0 && b[1] === 0) asciiCharsLE++;
+
+ b.length = 0;
+ charsProcessed++;
+
+ if (charsProcessed >= 100) {
+ break outer_loop;
+ }
+ }
+ }
+ }
+
+ // Make decisions.
+ // Most of the time, the content has ASCII chars (U+00**), but the opposite (U+**00) is uncommon.
+ // So, we count ASCII as if it was LE or BE, and decide from that.
+ if (asciiCharsBE > asciiCharsLE) return 'utf-16be';
+ if (asciiCharsBE < asciiCharsLE) return 'utf-16le';
+
+ // Couldn't decide (likely all zeros or not enough data).
+ return defaultEncoding || 'utf-16le';
+}
+
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf32.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf32.js
new file mode 100644
index 00000000..2fa900a1
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf32.js
@@ -0,0 +1,319 @@
+'use strict';
+
+var Buffer = require('safer-buffer').Buffer;
+
+// == UTF32-LE/BE codec. ==========================================================
+
+exports._utf32 = Utf32Codec;
+
+function Utf32Codec(codecOptions, iconv) {
+ this.iconv = iconv;
+ this.bomAware = true;
+ this.isLE = codecOptions.isLE;
+}
+
+exports.utf32le = { type: '_utf32', isLE: true };
+exports.utf32be = { type: '_utf32', isLE: false };
+
+// Aliases
+exports.ucs4le = 'utf32le';
+exports.ucs4be = 'utf32be';
+
+Utf32Codec.prototype.encoder = Utf32Encoder;
+Utf32Codec.prototype.decoder = Utf32Decoder;
+
+// -- Encoding
+
+function Utf32Encoder(options, codec) {
+ this.isLE = codec.isLE;
+ this.highSurrogate = 0;
+}
+
+Utf32Encoder.prototype.write = function(str) {
+ var src = Buffer.from(str, 'ucs2');
+ var dst = Buffer.alloc(src.length * 2);
+ var write32 = this.isLE ? dst.writeUInt32LE : dst.writeUInt32BE;
+ var offset = 0;
+
+ for (var i = 0; i < src.length; i += 2) {
+ var code = src.readUInt16LE(i);
+ var isHighSurrogate = (0xD800 <= code && code < 0xDC00);
+ var isLowSurrogate = (0xDC00 <= code && code < 0xE000);
+
+ if (this.highSurrogate) {
+ if (isHighSurrogate || !isLowSurrogate) {
+ // There shouldn't be two high surrogates in a row, nor a high surrogate which isn't followed by a low
+ // surrogate. If this happens, keep the pending high surrogate as a stand-alone semi-invalid character
+ // (technically wrong, but expected by some applications, like Windows file names).
+ write32.call(dst, this.highSurrogate, offset);
+ offset += 4;
+ }
+ else {
+ // Create 32-bit value from high and low surrogates;
+ var codepoint = (((this.highSurrogate - 0xD800) << 10) | (code - 0xDC00)) + 0x10000;
+
+ write32.call(dst, codepoint, offset);
+ offset += 4;
+ this.highSurrogate = 0;
+
+ continue;
+ }
+ }
+
+ if (isHighSurrogate)
+ this.highSurrogate = code;
+ else {
+ // Even if the current character is a low surrogate, with no previous high surrogate, we'll
+ // encode it as a semi-invalid stand-alone character for the same reasons expressed above for
+ // unpaired high surrogates.
+ write32.call(dst, code, offset);
+ offset += 4;
+ this.highSurrogate = 0;
+ }
+ }
+
+ if (offset < dst.length)
+ dst = dst.slice(0, offset);
+
+ return dst;
+};
+
+Utf32Encoder.prototype.end = function() {
+ // Treat any leftover high surrogate as a semi-valid independent character.
+ if (!this.highSurrogate)
+ return;
+
+ var buf = Buffer.alloc(4);
+
+ if (this.isLE)
+ buf.writeUInt32LE(this.highSurrogate, 0);
+ else
+ buf.writeUInt32BE(this.highSurrogate, 0);
+
+ this.highSurrogate = 0;
+
+ return buf;
+};
+
+// -- Decoding
+
+function Utf32Decoder(options, codec) {
+ this.isLE = codec.isLE;
+ this.badChar = codec.iconv.defaultCharUnicode.charCodeAt(0);
+ this.overflow = [];
+}
+
+Utf32Decoder.prototype.write = function(src) {
+ if (src.length === 0)
+ return '';
+
+ var i = 0;
+ var codepoint = 0;
+ var dst = Buffer.alloc(src.length + 4);
+ var offset = 0;
+ var isLE = this.isLE;
+ var overflow = this.overflow;
+ var badChar = this.badChar;
+
+ if (overflow.length > 0) {
+ for (; i < src.length && overflow.length < 4; i++)
+ overflow.push(src[i]);
+
+ if (overflow.length === 4) {
+ // NOTE: codepoint is a signed int32 and can be negative.
+ // NOTE: We copied this block from below to help V8 optimize it (it works with array, not buffer).
+ if (isLE) {
+ codepoint = overflow[i] | (overflow[i+1] << 8) | (overflow[i+2] << 16) | (overflow[i+3] << 24);
+ } else {
+ codepoint = overflow[i+3] | (overflow[i+2] << 8) | (overflow[i+1] << 16) | (overflow[i] << 24);
+ }
+ overflow.length = 0;
+
+ offset = _writeCodepoint(dst, offset, codepoint, badChar);
+ }
+ }
+
+ // Main loop. Should be as optimized as possible.
+ for (; i < src.length - 3; i += 4) {
+ // NOTE: codepoint is a signed int32 and can be negative.
+ if (isLE) {
+ codepoint = src[i] | (src[i+1] << 8) | (src[i+2] << 16) | (src[i+3] << 24);
+ } else {
+ codepoint = src[i+3] | (src[i+2] << 8) | (src[i+1] << 16) | (src[i] << 24);
+ }
+ offset = _writeCodepoint(dst, offset, codepoint, badChar);
+ }
+
+ // Keep overflowing bytes.
+ for (; i < src.length; i++) {
+ overflow.push(src[i]);
+ }
+
+ return dst.slice(0, offset).toString('ucs2');
+};
+
+function _writeCodepoint(dst, offset, codepoint, badChar) {
+ // NOTE: codepoint is signed int32 and can be negative. We keep it that way to help V8 with optimizations.
+ if (codepoint < 0 || codepoint > 0x10FFFF) {
+ // Not a valid Unicode codepoint
+ codepoint = badChar;
+ }
+
+ // Ephemeral Planes: Write high surrogate.
+ if (codepoint >= 0x10000) {
+ codepoint -= 0x10000;
+
+ var high = 0xD800 | (codepoint >> 10);
+ dst[offset++] = high & 0xff;
+ dst[offset++] = high >> 8;
+
+ // Low surrogate is written below.
+ var codepoint = 0xDC00 | (codepoint & 0x3FF);
+ }
+
+ // Write BMP char or low surrogate.
+ dst[offset++] = codepoint & 0xff;
+ dst[offset++] = codepoint >> 8;
+
+ return offset;
+};
+
+Utf32Decoder.prototype.end = function() {
+ this.overflow.length = 0;
+};
+
+// == UTF-32 Auto codec =============================================================
+// Decoder chooses automatically from UTF-32LE and UTF-32BE using BOM and space-based heuristic.
+// Defaults to UTF-32LE. http://en.wikipedia.org/wiki/UTF-32
+// Encoder/decoder default can be changed: iconv.decode(buf, 'utf32', {defaultEncoding: 'utf-32be'});
+
+// Encoder prepends BOM (which can be overridden with (addBOM: false}).
+
+exports.utf32 = Utf32AutoCodec;
+exports.ucs4 = 'utf32';
+
+function Utf32AutoCodec(options, iconv) {
+ this.iconv = iconv;
+}
+
+Utf32AutoCodec.prototype.encoder = Utf32AutoEncoder;
+Utf32AutoCodec.prototype.decoder = Utf32AutoDecoder;
+
+// -- Encoding
+
+function Utf32AutoEncoder(options, codec) {
+ options = options || {};
+
+ if (options.addBOM === undefined)
+ options.addBOM = true;
+
+ this.encoder = codec.iconv.getEncoder(options.defaultEncoding || 'utf-32le', options);
+}
+
+Utf32AutoEncoder.prototype.write = function(str) {
+ return this.encoder.write(str);
+};
+
+Utf32AutoEncoder.prototype.end = function() {
+ return this.encoder.end();
+};
+
+// -- Decoding
+
+function Utf32AutoDecoder(options, codec) {
+ this.decoder = null;
+ this.initialBufs = [];
+ this.initialBufsLen = 0;
+ this.options = options || {};
+ this.iconv = codec.iconv;
+}
+
+Utf32AutoDecoder.prototype.write = function(buf) {
+ if (!this.decoder) {
+ // Codec is not chosen yet. Accumulate initial bytes.
+ this.initialBufs.push(buf);
+ this.initialBufsLen += buf.length;
+
+ if (this.initialBufsLen < 32) // We need more bytes to use space heuristic (see below)
+ return '';
+
+ // We have enough bytes -> detect endianness.
+ var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
+ this.decoder = this.iconv.getDecoder(encoding, this.options);
+
+ var resStr = '';
+ for (var i = 0; i < this.initialBufs.length; i++)
+ resStr += this.decoder.write(this.initialBufs[i]);
+
+ this.initialBufs.length = this.initialBufsLen = 0;
+ return resStr;
+ }
+
+ return this.decoder.write(buf);
+};
+
+Utf32AutoDecoder.prototype.end = function() {
+ if (!this.decoder) {
+ var encoding = detectEncoding(this.initialBufs, this.options.defaultEncoding);
+ this.decoder = this.iconv.getDecoder(encoding, this.options);
+
+ var resStr = '';
+ for (var i = 0; i < this.initialBufs.length; i++)
+ resStr += this.decoder.write(this.initialBufs[i]);
+
+ var trail = this.decoder.end();
+ if (trail)
+ resStr += trail;
+
+ this.initialBufs.length = this.initialBufsLen = 0;
+ return resStr;
+ }
+
+ return this.decoder.end();
+};
+
+function detectEncoding(bufs, defaultEncoding) {
+ var b = [];
+ var charsProcessed = 0;
+ var invalidLE = 0, invalidBE = 0; // Number of invalid chars when decoded as LE or BE.
+ var bmpCharsLE = 0, bmpCharsBE = 0; // Number of BMP chars when decoded as LE or BE.
+
+ outer_loop:
+ for (var i = 0; i < bufs.length; i++) {
+ var buf = bufs[i];
+ for (var j = 0; j < buf.length; j++) {
+ b.push(buf[j]);
+ if (b.length === 4) {
+ if (charsProcessed === 0) {
+ // Check BOM first.
+ if (b[0] === 0xFF && b[1] === 0xFE && b[2] === 0 && b[3] === 0) {
+ return 'utf-32le';
+ }
+ if (b[0] === 0 && b[1] === 0 && b[2] === 0xFE && b[3] === 0xFF) {
+ return 'utf-32be';
+ }
+ }
+
+ if (b[0] !== 0 || b[1] > 0x10) invalidBE++;
+ if (b[3] !== 0 || b[2] > 0x10) invalidLE++;
+
+ if (b[0] === 0 && b[1] === 0 && (b[2] !== 0 || b[3] !== 0)) bmpCharsBE++;
+ if ((b[0] !== 0 || b[1] !== 0) && b[2] === 0 && b[3] === 0) bmpCharsLE++;
+
+ b.length = 0;
+ charsProcessed++;
+
+ if (charsProcessed >= 100) {
+ break outer_loop;
+ }
+ }
+ }
+ }
+
+ // Make decisions.
+ if (bmpCharsBE - invalidBE > bmpCharsLE - invalidLE) return 'utf-32be';
+ if (bmpCharsBE - invalidBE < bmpCharsLE - invalidLE) return 'utf-32le';
+
+ // Couldn't decide (likely all zeros or not enough data).
+ return defaultEncoding || 'utf-32le';
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf7.js b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf7.js
new file mode 100644
index 00000000..eacae34d
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/encodings/utf7.js
@@ -0,0 +1,290 @@
+"use strict";
+var Buffer = require("safer-buffer").Buffer;
+
+// UTF-7 codec, according to https://tools.ietf.org/html/rfc2152
+// See also below a UTF-7-IMAP codec, according to http://tools.ietf.org/html/rfc3501#section-5.1.3
+
+exports.utf7 = Utf7Codec;
+exports.unicode11utf7 = 'utf7'; // Alias UNICODE-1-1-UTF-7
+function Utf7Codec(codecOptions, iconv) {
+ this.iconv = iconv;
+};
+
+Utf7Codec.prototype.encoder = Utf7Encoder;
+Utf7Codec.prototype.decoder = Utf7Decoder;
+Utf7Codec.prototype.bomAware = true;
+
+
+// -- Encoding
+
+var nonDirectChars = /[^A-Za-z0-9'\(\),-\.\/:\? \n\r\t]+/g;
+
+function Utf7Encoder(options, codec) {
+ this.iconv = codec.iconv;
+}
+
+Utf7Encoder.prototype.write = function(str) {
+ // Naive implementation.
+ // Non-direct chars are encoded as "+-"; single "+" char is encoded as "+-".
+ return Buffer.from(str.replace(nonDirectChars, function(chunk) {
+ return "+" + (chunk === '+' ? '' :
+ this.iconv.encode(chunk, 'utf16-be').toString('base64').replace(/=+$/, ''))
+ + "-";
+ }.bind(this)));
+}
+
+Utf7Encoder.prototype.end = function() {
+}
+
+
+// -- Decoding
+
+function Utf7Decoder(options, codec) {
+ this.iconv = codec.iconv;
+ this.inBase64 = false;
+ this.base64Accum = '';
+}
+
+var base64Regex = /[A-Za-z0-9\/+]/;
+var base64Chars = [];
+for (var i = 0; i < 256; i++)
+ base64Chars[i] = base64Regex.test(String.fromCharCode(i));
+
+var plusChar = '+'.charCodeAt(0),
+ minusChar = '-'.charCodeAt(0),
+ andChar = '&'.charCodeAt(0);
+
+Utf7Decoder.prototype.write = function(buf) {
+ var res = "", lastI = 0,
+ inBase64 = this.inBase64,
+ base64Accum = this.base64Accum;
+
+ // The decoder is more involved as we must handle chunks in stream.
+
+ for (var i = 0; i < buf.length; i++) {
+ if (!inBase64) { // We're in direct mode.
+ // Write direct chars until '+'
+ if (buf[i] == plusChar) {
+ res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars.
+ lastI = i+1;
+ inBase64 = true;
+ }
+ } else { // We decode base64.
+ if (!base64Chars[buf[i]]) { // Base64 ended.
+ if (i == lastI && buf[i] == minusChar) {// "+-" -> "+"
+ res += "+";
+ } else {
+ var b64str = base64Accum + this.iconv.decode(buf.slice(lastI, i), "ascii");
+ res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
+ }
+
+ if (buf[i] != minusChar) // Minus is absorbed after base64.
+ i--;
+
+ lastI = i+1;
+ inBase64 = false;
+ base64Accum = '';
+ }
+ }
+ }
+
+ if (!inBase64) {
+ res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars.
+ } else {
+ var b64str = base64Accum + this.iconv.decode(buf.slice(lastI), "ascii");
+
+ var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars.
+ base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future.
+ b64str = b64str.slice(0, canBeDecoded);
+
+ res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
+ }
+
+ this.inBase64 = inBase64;
+ this.base64Accum = base64Accum;
+
+ return res;
+}
+
+Utf7Decoder.prototype.end = function() {
+ var res = "";
+ if (this.inBase64 && this.base64Accum.length > 0)
+ res = this.iconv.decode(Buffer.from(this.base64Accum, 'base64'), "utf16-be");
+
+ this.inBase64 = false;
+ this.base64Accum = '';
+ return res;
+}
+
+
+// UTF-7-IMAP codec.
+// RFC3501 Sec. 5.1.3 Modified UTF-7 (http://tools.ietf.org/html/rfc3501#section-5.1.3)
+// Differences:
+// * Base64 part is started by "&" instead of "+"
+// * Direct characters are 0x20-0x7E, except "&" (0x26)
+// * In Base64, "," is used instead of "/"
+// * Base64 must not be used to represent direct characters.
+// * No implicit shift back from Base64 (should always end with '-')
+// * String must end in non-shifted position.
+// * "-&" while in base64 is not allowed.
+
+
+exports.utf7imap = Utf7IMAPCodec;
+function Utf7IMAPCodec(codecOptions, iconv) {
+ this.iconv = iconv;
+};
+
+Utf7IMAPCodec.prototype.encoder = Utf7IMAPEncoder;
+Utf7IMAPCodec.prototype.decoder = Utf7IMAPDecoder;
+Utf7IMAPCodec.prototype.bomAware = true;
+
+
+// -- Encoding
+
+function Utf7IMAPEncoder(options, codec) {
+ this.iconv = codec.iconv;
+ this.inBase64 = false;
+ this.base64Accum = Buffer.alloc(6);
+ this.base64AccumIdx = 0;
+}
+
+Utf7IMAPEncoder.prototype.write = function(str) {
+ var inBase64 = this.inBase64,
+ base64Accum = this.base64Accum,
+ base64AccumIdx = this.base64AccumIdx,
+ buf = Buffer.alloc(str.length*5 + 10), bufIdx = 0;
+
+ for (var i = 0; i < str.length; i++) {
+ var uChar = str.charCodeAt(i);
+ if (0x20 <= uChar && uChar <= 0x7E) { // Direct character or '&'.
+ if (inBase64) {
+ if (base64AccumIdx > 0) {
+ bufIdx += buf.write(base64Accum.slice(0, base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx);
+ base64AccumIdx = 0;
+ }
+
+ buf[bufIdx++] = minusChar; // Write '-', then go to direct mode.
+ inBase64 = false;
+ }
+
+ if (!inBase64) {
+ buf[bufIdx++] = uChar; // Write direct character
+
+ if (uChar === andChar) // Ampersand -> '&-'
+ buf[bufIdx++] = minusChar;
+ }
+
+ } else { // Non-direct character
+ if (!inBase64) {
+ buf[bufIdx++] = andChar; // Write '&', then go to base64 mode.
+ inBase64 = true;
+ }
+ if (inBase64) {
+ base64Accum[base64AccumIdx++] = uChar >> 8;
+ base64Accum[base64AccumIdx++] = uChar & 0xFF;
+
+ if (base64AccumIdx == base64Accum.length) {
+ bufIdx += buf.write(base64Accum.toString('base64').replace(/\//g, ','), bufIdx);
+ base64AccumIdx = 0;
+ }
+ }
+ }
+ }
+
+ this.inBase64 = inBase64;
+ this.base64AccumIdx = base64AccumIdx;
+
+ return buf.slice(0, bufIdx);
+}
+
+Utf7IMAPEncoder.prototype.end = function() {
+ var buf = Buffer.alloc(10), bufIdx = 0;
+ if (this.inBase64) {
+ if (this.base64AccumIdx > 0) {
+ bufIdx += buf.write(this.base64Accum.slice(0, this.base64AccumIdx).toString('base64').replace(/\//g, ',').replace(/=+$/, ''), bufIdx);
+ this.base64AccumIdx = 0;
+ }
+
+ buf[bufIdx++] = minusChar; // Write '-', then go to direct mode.
+ this.inBase64 = false;
+ }
+
+ return buf.slice(0, bufIdx);
+}
+
+
+// -- Decoding
+
+function Utf7IMAPDecoder(options, codec) {
+ this.iconv = codec.iconv;
+ this.inBase64 = false;
+ this.base64Accum = '';
+}
+
+var base64IMAPChars = base64Chars.slice();
+base64IMAPChars[','.charCodeAt(0)] = true;
+
+Utf7IMAPDecoder.prototype.write = function(buf) {
+ var res = "", lastI = 0,
+ inBase64 = this.inBase64,
+ base64Accum = this.base64Accum;
+
+ // The decoder is more involved as we must handle chunks in stream.
+ // It is forgiving, closer to standard UTF-7 (for example, '-' is optional at the end).
+
+ for (var i = 0; i < buf.length; i++) {
+ if (!inBase64) { // We're in direct mode.
+ // Write direct chars until '&'
+ if (buf[i] == andChar) {
+ res += this.iconv.decode(buf.slice(lastI, i), "ascii"); // Write direct chars.
+ lastI = i+1;
+ inBase64 = true;
+ }
+ } else { // We decode base64.
+ if (!base64IMAPChars[buf[i]]) { // Base64 ended.
+ if (i == lastI && buf[i] == minusChar) { // "&-" -> "&"
+ res += "&";
+ } else {
+ var b64str = base64Accum + this.iconv.decode(buf.slice(lastI, i), "ascii").replace(/,/g, '/');
+ res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
+ }
+
+ if (buf[i] != minusChar) // Minus may be absorbed after base64.
+ i--;
+
+ lastI = i+1;
+ inBase64 = false;
+ base64Accum = '';
+ }
+ }
+ }
+
+ if (!inBase64) {
+ res += this.iconv.decode(buf.slice(lastI), "ascii"); // Write direct chars.
+ } else {
+ var b64str = base64Accum + this.iconv.decode(buf.slice(lastI), "ascii").replace(/,/g, '/');
+
+ var canBeDecoded = b64str.length - (b64str.length % 8); // Minimal chunk: 2 quads -> 2x3 bytes -> 3 chars.
+ base64Accum = b64str.slice(canBeDecoded); // The rest will be decoded in future.
+ b64str = b64str.slice(0, canBeDecoded);
+
+ res += this.iconv.decode(Buffer.from(b64str, 'base64'), "utf16-be");
+ }
+
+ this.inBase64 = inBase64;
+ this.base64Accum = base64Accum;
+
+ return res;
+}
+
+Utf7IMAPDecoder.prototype.end = function() {
+ var res = "";
+ if (this.inBase64 && this.base64Accum.length > 0)
+ res = this.iconv.decode(Buffer.from(this.base64Accum, 'base64'), "utf16-be");
+
+ this.inBase64 = false;
+ this.base64Accum = '';
+ return res;
+}
+
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/lib/bom-handling.js b/node_modules/d3-dsv/node_modules/iconv-lite/lib/bom-handling.js
new file mode 100644
index 00000000..10508723
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/lib/bom-handling.js
@@ -0,0 +1,52 @@
+"use strict";
+
+var BOMChar = '\uFEFF';
+
+exports.PrependBOM = PrependBOMWrapper
+function PrependBOMWrapper(encoder, options) {
+ this.encoder = encoder;
+ this.addBOM = true;
+}
+
+PrependBOMWrapper.prototype.write = function(str) {
+ if (this.addBOM) {
+ str = BOMChar + str;
+ this.addBOM = false;
+ }
+
+ return this.encoder.write(str);
+}
+
+PrependBOMWrapper.prototype.end = function() {
+ return this.encoder.end();
+}
+
+
+//------------------------------------------------------------------------------
+
+exports.StripBOM = StripBOMWrapper;
+function StripBOMWrapper(decoder, options) {
+ this.decoder = decoder;
+ this.pass = false;
+ this.options = options || {};
+}
+
+StripBOMWrapper.prototype.write = function(buf) {
+ var res = this.decoder.write(buf);
+ if (this.pass || !res)
+ return res;
+
+ if (res[0] === BOMChar) {
+ res = res.slice(1);
+ if (typeof this.options.stripBOM === 'function')
+ this.options.stripBOM();
+ }
+
+ this.pass = true;
+ return res;
+}
+
+StripBOMWrapper.prototype.end = function() {
+ return this.decoder.end();
+}
+
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.d.ts b/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.d.ts
new file mode 100644
index 00000000..99f200f4
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.d.ts
@@ -0,0 +1,41 @@
+/*---------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License.
+ * REQUIREMENT: This definition is dependent on the @types/node definition.
+ * Install with `npm install @types/node --save-dev`
+ *--------------------------------------------------------------------------------------------*/
+
+declare module 'iconv-lite' {
+ // Basic API
+ export function decode(buffer: Buffer, encoding: string, options?: Options): string;
+
+ export function encode(content: string, encoding: string, options?: Options): Buffer;
+
+ export function encodingExists(encoding: string): boolean;
+
+ // Stream API
+ export function decodeStream(encoding: string, options?: Options): NodeJS.ReadWriteStream;
+
+ export function encodeStream(encoding: string, options?: Options): NodeJS.ReadWriteStream;
+
+ // Low-level stream APIs
+ export function getEncoder(encoding: string, options?: Options): EncoderStream;
+
+ export function getDecoder(encoding: string, options?: Options): DecoderStream;
+}
+
+export interface Options {
+ stripBOM?: boolean;
+ addBOM?: boolean;
+ defaultEncoding?: string;
+}
+
+export interface EncoderStream {
+ write(str: string): Buffer;
+ end(): Buffer | undefined;
+}
+
+export interface DecoderStream {
+ write(buf: Buffer): string;
+ end(): string | undefined;
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.js b/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.js
new file mode 100644
index 00000000..657701c3
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/lib/index.js
@@ -0,0 +1,180 @@
+"use strict";
+
+var Buffer = require("safer-buffer").Buffer;
+
+var bomHandling = require("./bom-handling"),
+ iconv = module.exports;
+
+// All codecs and aliases are kept here, keyed by encoding name/alias.
+// They are lazy loaded in `iconv.getCodec` from `encodings/index.js`.
+iconv.encodings = null;
+
+// Characters emitted in case of error.
+iconv.defaultCharUnicode = '�';
+iconv.defaultCharSingleByte = '?';
+
+// Public API.
+iconv.encode = function encode(str, encoding, options) {
+ str = "" + (str || ""); // Ensure string.
+
+ var encoder = iconv.getEncoder(encoding, options);
+
+ var res = encoder.write(str);
+ var trail = encoder.end();
+
+ return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res;
+}
+
+iconv.decode = function decode(buf, encoding, options) {
+ if (typeof buf === 'string') {
+ if (!iconv.skipDecodeWarning) {
+ console.error('Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding');
+ iconv.skipDecodeWarning = true;
+ }
+
+ buf = Buffer.from("" + (buf || ""), "binary"); // Ensure buffer.
+ }
+
+ var decoder = iconv.getDecoder(encoding, options);
+
+ var res = decoder.write(buf);
+ var trail = decoder.end();
+
+ return trail ? (res + trail) : res;
+}
+
+iconv.encodingExists = function encodingExists(enc) {
+ try {
+ iconv.getCodec(enc);
+ return true;
+ } catch (e) {
+ return false;
+ }
+}
+
+// Legacy aliases to convert functions
+iconv.toEncoding = iconv.encode;
+iconv.fromEncoding = iconv.decode;
+
+// Search for a codec in iconv.encodings. Cache codec data in iconv._codecDataCache.
+iconv._codecDataCache = {};
+iconv.getCodec = function getCodec(encoding) {
+ if (!iconv.encodings)
+ iconv.encodings = require("../encodings"); // Lazy load all encoding definitions.
+
+ // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+ var enc = iconv._canonicalizeEncoding(encoding);
+
+ // Traverse iconv.encodings to find actual codec.
+ var codecOptions = {};
+ while (true) {
+ var codec = iconv._codecDataCache[enc];
+ if (codec)
+ return codec;
+
+ var codecDef = iconv.encodings[enc];
+
+ switch (typeof codecDef) {
+ case "string": // Direct alias to other encoding.
+ enc = codecDef;
+ break;
+
+ case "object": // Alias with options. Can be layered.
+ for (var key in codecDef)
+ codecOptions[key] = codecDef[key];
+
+ if (!codecOptions.encodingName)
+ codecOptions.encodingName = enc;
+
+ enc = codecDef.type;
+ break;
+
+ case "function": // Codec itself.
+ if (!codecOptions.encodingName)
+ codecOptions.encodingName = enc;
+
+ // The codec function must load all tables and return object with .encoder and .decoder methods.
+ // It'll be called only once (for each different options object).
+ codec = new codecDef(codecOptions, iconv);
+
+ iconv._codecDataCache[codecOptions.encodingName] = codec; // Save it to be reused later.
+ return codec;
+
+ default:
+ throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '"+enc+"')");
+ }
+ }
+}
+
+iconv._canonicalizeEncoding = function(encoding) {
+ // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+ return (''+encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "");
+}
+
+iconv.getEncoder = function getEncoder(encoding, options) {
+ var codec = iconv.getCodec(encoding),
+ encoder = new codec.encoder(options, codec);
+
+ if (codec.bomAware && options && options.addBOM)
+ encoder = new bomHandling.PrependBOM(encoder, options);
+
+ return encoder;
+}
+
+iconv.getDecoder = function getDecoder(encoding, options) {
+ var codec = iconv.getCodec(encoding),
+ decoder = new codec.decoder(options, codec);
+
+ if (codec.bomAware && !(options && options.stripBOM === false))
+ decoder = new bomHandling.StripBOM(decoder, options);
+
+ return decoder;
+}
+
+// Streaming API
+// NOTE: Streaming API naturally depends on 'stream' module from Node.js. Unfortunately in browser environments this module can add
+// up to 100Kb to the output bundle. To avoid unnecessary code bloat, we don't enable Streaming API in browser by default.
+// If you would like to enable it explicitly, please add the following code to your app:
+// > iconv.enableStreamingAPI(require('stream'));
+iconv.enableStreamingAPI = function enableStreamingAPI(stream_module) {
+ if (iconv.supportsStreams)
+ return;
+
+ // Dependency-inject stream module to create IconvLite stream classes.
+ var streams = require("./streams")(stream_module);
+
+ // Not public API yet, but expose the stream classes.
+ iconv.IconvLiteEncoderStream = streams.IconvLiteEncoderStream;
+ iconv.IconvLiteDecoderStream = streams.IconvLiteDecoderStream;
+
+ // Streaming API.
+ iconv.encodeStream = function encodeStream(encoding, options) {
+ return new iconv.IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options);
+ }
+
+ iconv.decodeStream = function decodeStream(encoding, options) {
+ return new iconv.IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options);
+ }
+
+ iconv.supportsStreams = true;
+}
+
+// Enable Streaming API automatically if 'stream' module is available and non-empty (the majority of environments).
+var stream_module;
+try {
+ stream_module = require("stream");
+} catch (e) {}
+
+if (stream_module && stream_module.Transform) {
+ iconv.enableStreamingAPI(stream_module);
+
+} else {
+ // In rare cases where 'stream' module is not available by default, throw a helpful exception.
+ iconv.encodeStream = iconv.decodeStream = function() {
+ throw new Error("iconv-lite Streaming API is not enabled. Use iconv.enableStreamingAPI(require('stream')); to enable it.");
+ };
+}
+
+if ("Ā" != "\u0100") {
+ console.error("iconv-lite warning: js files use non-utf8 encoding. See https://github.com/ashtuchkin/iconv-lite/wiki/Javascript-source-file-encodings for more info.");
+}
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/lib/streams.js b/node_modules/d3-dsv/node_modules/iconv-lite/lib/streams.js
new file mode 100644
index 00000000..a1506482
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/lib/streams.js
@@ -0,0 +1,109 @@
+"use strict";
+
+var Buffer = require("safer-buffer").Buffer;
+
+// NOTE: Due to 'stream' module being pretty large (~100Kb, significant in browser environments),
+// we opt to dependency-inject it instead of creating a hard dependency.
+module.exports = function(stream_module) {
+ var Transform = stream_module.Transform;
+
+ // == Encoder stream =======================================================
+
+ function IconvLiteEncoderStream(conv, options) {
+ this.conv = conv;
+ options = options || {};
+ options.decodeStrings = false; // We accept only strings, so we don't need to decode them.
+ Transform.call(this, options);
+ }
+
+ IconvLiteEncoderStream.prototype = Object.create(Transform.prototype, {
+ constructor: { value: IconvLiteEncoderStream }
+ });
+
+ IconvLiteEncoderStream.prototype._transform = function(chunk, encoding, done) {
+ if (typeof chunk != 'string')
+ return done(new Error("Iconv encoding stream needs strings as its input."));
+ try {
+ var res = this.conv.write(chunk);
+ if (res && res.length) this.push(res);
+ done();
+ }
+ catch (e) {
+ done(e);
+ }
+ }
+
+ IconvLiteEncoderStream.prototype._flush = function(done) {
+ try {
+ var res = this.conv.end();
+ if (res && res.length) this.push(res);
+ done();
+ }
+ catch (e) {
+ done(e);
+ }
+ }
+
+ IconvLiteEncoderStream.prototype.collect = function(cb) {
+ var chunks = [];
+ this.on('error', cb);
+ this.on('data', function(chunk) { chunks.push(chunk); });
+ this.on('end', function() {
+ cb(null, Buffer.concat(chunks));
+ });
+ return this;
+ }
+
+
+ // == Decoder stream =======================================================
+
+ function IconvLiteDecoderStream(conv, options) {
+ this.conv = conv;
+ options = options || {};
+ options.encoding = this.encoding = 'utf8'; // We output strings.
+ Transform.call(this, options);
+ }
+
+ IconvLiteDecoderStream.prototype = Object.create(Transform.prototype, {
+ constructor: { value: IconvLiteDecoderStream }
+ });
+
+ IconvLiteDecoderStream.prototype._transform = function(chunk, encoding, done) {
+ if (!Buffer.isBuffer(chunk) && !(chunk instanceof Uint8Array))
+ return done(new Error("Iconv decoding stream needs buffers as its input."));
+ try {
+ var res = this.conv.write(chunk);
+ if (res && res.length) this.push(res, this.encoding);
+ done();
+ }
+ catch (e) {
+ done(e);
+ }
+ }
+
+ IconvLiteDecoderStream.prototype._flush = function(done) {
+ try {
+ var res = this.conv.end();
+ if (res && res.length) this.push(res, this.encoding);
+ done();
+ }
+ catch (e) {
+ done(e);
+ }
+ }
+
+ IconvLiteDecoderStream.prototype.collect = function(cb) {
+ var res = '';
+ this.on('error', cb);
+ this.on('data', function(chunk) { res += chunk; });
+ this.on('end', function() {
+ cb(null, res);
+ });
+ return this;
+ }
+
+ return {
+ IconvLiteEncoderStream: IconvLiteEncoderStream,
+ IconvLiteDecoderStream: IconvLiteDecoderStream,
+ };
+};
diff --git a/node_modules/d3-dsv/node_modules/iconv-lite/package.json b/node_modules/d3-dsv/node_modules/iconv-lite/package.json
new file mode 100644
index 00000000..8fb76dee
--- /dev/null
+++ b/node_modules/d3-dsv/node_modules/iconv-lite/package.json
@@ -0,0 +1,74 @@
+{
+ "_from": "iconv-lite@0.6",
+ "_id": "iconv-lite@0.6.3",
+ "_inBundle": false,
+ "_integrity": "sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==",
+ "_location": "/d3-dsv/iconv-lite",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "iconv-lite@0.6",
+ "name": "iconv-lite",
+ "escapedName": "iconv-lite",
+ "rawSpec": "0.6",
+ "saveSpec": null,
+ "fetchSpec": "0.6"
+ },
+ "_requiredBy": [
+ "/d3-dsv"
+ ],
+ "_resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.6.3.tgz",
+ "_shasum": "a52f80bf38da1952eb5c681790719871a1a72501",
+ "_spec": "iconv-lite@0.6",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3-dsv",
+ "author": {
+ "name": "Alexander Shtuchkin",
+ "email": "ashtuchkin@gmail.com"
+ },
+ "browser": {
+ "stream": false
+ },
+ "bugs": {
+ "url": "https://github.com/ashtuchkin/iconv-lite/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "safer-buffer": ">= 2.1.2 < 3.0.0"
+ },
+ "deprecated": false,
+ "description": "Convert character encodings in pure javascript.",
+ "devDependencies": {
+ "async": "^3.2.0",
+ "c8": "^7.2.0",
+ "errto": "^0.2.1",
+ "iconv": "^2.3.5",
+ "mocha": "^3.5.3",
+ "request": "^2.88.2",
+ "semver": "^6.3.0",
+ "unorm": "^1.6.0"
+ },
+ "engines": {
+ "node": ">=0.10.0"
+ },
+ "homepage": "https://github.com/ashtuchkin/iconv-lite",
+ "keywords": [
+ "iconv",
+ "convert",
+ "charset",
+ "icu"
+ ],
+ "license": "MIT",
+ "main": "./lib/index.js",
+ "name": "iconv-lite",
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/ashtuchkin/iconv-lite.git"
+ },
+ "scripts": {
+ "coverage": "c8 _mocha --grep .",
+ "test": "mocha --reporter spec --grep ."
+ },
+ "typings": "./lib/index.d.ts",
+ "version": "0.6.3"
+}
diff --git a/node_modules/d3-dsv/package.json b/node_modules/d3-dsv/package.json
new file mode 100644
index 00000000..5db3b8ff
--- /dev/null
+++ b/node_modules/d3-dsv/package.json
@@ -0,0 +1,99 @@
+{
+ "_from": "d3-dsv@3",
+ "_id": "d3-dsv@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-UG6OvdI5afDIFP9w4G0mNq50dSOsXHJaRE8arAS5o9ApWnIElp8GZw1Dun8vP8OyHOZ/QJUKUJwxiiCCnUwm+Q==",
+ "_location": "/d3-dsv",
+ "_phantomChildren": {
+ "safer-buffer": "2.1.2"
+ },
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-dsv@3",
+ "name": "d3-dsv",
+ "escapedName": "d3-dsv",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-fetch"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-dsv/-/d3-dsv-3.0.1.tgz",
+ "_shasum": "c63af978f4d6a0d084a52a673922be2160789b73",
+ "_spec": "d3-dsv@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bin": {
+ "csv2json": "bin/dsv2json.js",
+ "csv2tsv": "bin/dsv2dsv.js",
+ "dsv2dsv": "bin/dsv2dsv.js",
+ "dsv2json": "bin/dsv2json.js",
+ "json2csv": "bin/json2dsv.js",
+ "json2dsv": "bin/json2dsv.js",
+ "json2tsv": "bin/json2dsv.js",
+ "tsv2csv": "bin/dsv2dsv.js",
+ "tsv2json": "bin/dsv2json.js"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-dsv/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "commander": "7",
+ "iconv-lite": "0.6",
+ "rw": "1"
+ },
+ "deprecated": false,
+ "description": "A parser and formatter for delimiter-separated values, such as CSV and TSV",
+ "devDependencies": {
+ "csv-spectrum": "1",
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-dsv.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "bin/*.js",
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-dsv/",
+ "jsdelivr": "dist/d3-dsv.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "dsv",
+ "csv",
+ "tsv"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-dsv",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-dsv.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "TZ=America/Los_Angeles mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-dsv.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-dsv/src/autoType.js b/node_modules/d3-dsv/src/autoType.js
new file mode 100644
index 00000000..13864f5e
--- /dev/null
+++ b/node_modules/d3-dsv/src/autoType.js
@@ -0,0 +1,20 @@
+export default function autoType(object) {
+ for (var key in object) {
+ var value = object[key].trim(), number, m;
+ if (!value) value = null;
+ else if (value === "true") value = true;
+ else if (value === "false") value = false;
+ else if (value === "NaN") value = NaN;
+ else if (!isNaN(number = +value)) value = number;
+ else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) {
+ if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " ");
+ value = new Date(value);
+ }
+ else continue;
+ object[key] = value;
+ }
+ return object;
+}
+
+// https://github.com/d3/d3-dsv/issues/45
+const fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours();
\ No newline at end of file
diff --git a/node_modules/d3-dsv/src/csv.js b/node_modules/d3-dsv/src/csv.js
new file mode 100644
index 00000000..47afda85
--- /dev/null
+++ b/node_modules/d3-dsv/src/csv.js
@@ -0,0 +1,11 @@
+import dsv from "./dsv.js";
+
+var csv = dsv(",");
+
+export var csvParse = csv.parse;
+export var csvParseRows = csv.parseRows;
+export var csvFormat = csv.format;
+export var csvFormatBody = csv.formatBody;
+export var csvFormatRows = csv.formatRows;
+export var csvFormatRow = csv.formatRow;
+export var csvFormatValue = csv.formatValue;
diff --git a/node_modules/d3-dsv/src/dsv.js b/node_modules/d3-dsv/src/dsv.js
new file mode 100644
index 00000000..17838fb3
--- /dev/null
+++ b/node_modules/d3-dsv/src/dsv.js
@@ -0,0 +1,164 @@
+var EOL = {},
+ EOF = {},
+ QUOTE = 34,
+ NEWLINE = 10,
+ RETURN = 13;
+
+function objectConverter(columns) {
+ return new Function("d", "return {" + columns.map(function(name, i) {
+ return JSON.stringify(name) + ": d[" + i + "] || \"\"";
+ }).join(",") + "}");
+}
+
+function customConverter(columns, f) {
+ var object = objectConverter(columns);
+ return function(row, i) {
+ return f(object(row), i, columns);
+ };
+}
+
+// Compute unique columns in order of discovery.
+function inferColumns(rows) {
+ var columnSet = Object.create(null),
+ columns = [];
+
+ rows.forEach(function(row) {
+ for (var column in row) {
+ if (!(column in columnSet)) {
+ columns.push(columnSet[column] = column);
+ }
+ }
+ });
+
+ return columns;
+}
+
+function pad(value, width) {
+ var s = value + "", length = s.length;
+ return length < width ? new Array(width - length + 1).join(0) + s : s;
+}
+
+function formatYear(year) {
+ return year < 0 ? "-" + pad(-year, 6)
+ : year > 9999 ? "+" + pad(year, 6)
+ : pad(year, 4);
+}
+
+function formatDate(date) {
+ var hours = date.getUTCHours(),
+ minutes = date.getUTCMinutes(),
+ seconds = date.getUTCSeconds(),
+ milliseconds = date.getUTCMilliseconds();
+ return isNaN(date) ? "Invalid Date"
+ : formatYear(date.getUTCFullYear(), 4) + "-" + pad(date.getUTCMonth() + 1, 2) + "-" + pad(date.getUTCDate(), 2)
+ + (milliseconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "." + pad(milliseconds, 3) + "Z"
+ : seconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "Z"
+ : minutes || hours ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + "Z"
+ : "");
+}
+
+export default function(delimiter) {
+ var reFormat = new RegExp("[\"" + delimiter + "\n\r]"),
+ DELIMITER = delimiter.charCodeAt(0);
+
+ function parse(text, f) {
+ var convert, columns, rows = parseRows(text, function(row, i) {
+ if (convert) return convert(row, i - 1);
+ columns = row, convert = f ? customConverter(row, f) : objectConverter(row);
+ });
+ rows.columns = columns || [];
+ return rows;
+ }
+
+ function parseRows(text, f) {
+ var rows = [], // output rows
+ N = text.length,
+ I = 0, // current character index
+ n = 0, // current line number
+ t, // current token
+ eof = N <= 0, // current token followed by EOF?
+ eol = false; // current token followed by EOL?
+
+ // Strip the trailing newline.
+ if (text.charCodeAt(N - 1) === NEWLINE) --N;
+ if (text.charCodeAt(N - 1) === RETURN) --N;
+
+ function token() {
+ if (eof) return EOF;
+ if (eol) return eol = false, EOL;
+
+ // Unescape quotes.
+ var i, j = I, c;
+ if (text.charCodeAt(j) === QUOTE) {
+ while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE);
+ if ((i = I) >= N) eof = true;
+ else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true;
+ else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; }
+ return text.slice(j + 1, i - 1).replace(/""/g, "\"");
+ }
+
+ // Find next delimiter or newline.
+ while (I < N) {
+ if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true;
+ else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; }
+ else if (c !== DELIMITER) continue;
+ return text.slice(j, i);
+ }
+
+ // Return last token before EOF.
+ return eof = true, text.slice(j, N);
+ }
+
+ while ((t = token()) !== EOF) {
+ var row = [];
+ while (t !== EOL && t !== EOF) row.push(t), t = token();
+ if (f && (row = f(row, n++)) == null) continue;
+ rows.push(row);
+ }
+
+ return rows;
+ }
+
+ function preformatBody(rows, columns) {
+ return rows.map(function(row) {
+ return columns.map(function(column) {
+ return formatValue(row[column]);
+ }).join(delimiter);
+ });
+ }
+
+ function format(rows, columns) {
+ if (columns == null) columns = inferColumns(rows);
+ return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n");
+ }
+
+ function formatBody(rows, columns) {
+ if (columns == null) columns = inferColumns(rows);
+ return preformatBody(rows, columns).join("\n");
+ }
+
+ function formatRows(rows) {
+ return rows.map(formatRow).join("\n");
+ }
+
+ function formatRow(row) {
+ return row.map(formatValue).join(delimiter);
+ }
+
+ function formatValue(value) {
+ return value == null ? ""
+ : value instanceof Date ? formatDate(value)
+ : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\""
+ : value;
+ }
+
+ return {
+ parse: parse,
+ parseRows: parseRows,
+ format: format,
+ formatBody: formatBody,
+ formatRows: formatRows,
+ formatRow: formatRow,
+ formatValue: formatValue
+ };
+}
diff --git a/node_modules/d3-dsv/src/index.js b/node_modules/d3-dsv/src/index.js
new file mode 100644
index 00000000..0a63fff2
--- /dev/null
+++ b/node_modules/d3-dsv/src/index.js
@@ -0,0 +1,4 @@
+export {default as dsvFormat} from "./dsv.js";
+export {csvParse, csvParseRows, csvFormat, csvFormatBody, csvFormatRows, csvFormatRow, csvFormatValue} from "./csv.js";
+export {tsvParse, tsvParseRows, tsvFormat, tsvFormatBody, tsvFormatRows, tsvFormatRow, tsvFormatValue} from "./tsv.js";
+export {default as autoType} from "./autoType.js";
diff --git a/node_modules/d3-dsv/src/tsv.js b/node_modules/d3-dsv/src/tsv.js
new file mode 100644
index 00000000..38b16c21
--- /dev/null
+++ b/node_modules/d3-dsv/src/tsv.js
@@ -0,0 +1,11 @@
+import dsv from "./dsv.js";
+
+var tsv = dsv("\t");
+
+export var tsvParse = tsv.parse;
+export var tsvParseRows = tsv.parseRows;
+export var tsvFormat = tsv.format;
+export var tsvFormatBody = tsv.formatBody;
+export var tsvFormatRows = tsv.formatRows;
+export var tsvFormatRow = tsv.formatRow;
+export var tsvFormatValue = tsv.formatValue;
diff --git a/node_modules/d3-ease/LICENSE b/node_modules/d3-ease/LICENSE
new file mode 100644
index 00000000..83cc9970
--- /dev/null
+++ b/node_modules/d3-ease/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2010-2021 Mike Bostock
+Copyright 2001 Robert Penner
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+ list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+* Neither the name of the author nor the names of contributors may be used to
+ endorse or promote products derived from this software without specific prior
+ written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/node_modules/d3-ease/README.md b/node_modules/d3-ease/README.md
new file mode 100644
index 00000000..cc6ca791
--- /dev/null
+++ b/node_modules/d3-ease/README.md
@@ -0,0 +1,253 @@
+# d3-ease
+
+*Easing* is a method of distorting time to control apparent motion in animation. It is most commonly used for [slow-in, slow-out](https://en.wikipedia.org/wiki/12_basic_principles_of_animation#Slow_In_and_Slow_Out). By easing time, [animated transitions](https://github.com/d3/d3-transition) are smoother and exhibit more plausible motion.
+
+The easing types in this module implement the [ease method](#ease_ease), which takes a normalized time *t* and returns the corresponding “eased” time *tʹ*. Both the normalized time and the eased time are typically in the range [0,1], where 0 represents the start of the animation and 1 represents the end; some easing types, such as [elastic](#easeElastic), may return eased times slightly outside this range. A good easing type should return 0 if *t* = 0 and 1 if *t* = 1. See the [easing explorer](https://observablehq.com/@d3/easing) for a visual demonstration.
+
+These easing types are largely based on work by [Robert Penner](http://robertpenner.com/easing/).
+
+## Installing
+
+If you use npm, `npm install d3-ease`. You can also download the [latest release on GitHub](https://github.com/d3/d3-ease/releases/latest). For vanilla HTML in modern browsers, import d3-ease from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-ease’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+[Try d3-ease in your browser.](https://observablehq.com/@d3/easing-animations)
+
+## API Reference
+
+# ease (t )
+
+Given the specified normalized time *t*, typically in the range [0,1], returns the “eased” time *tʹ*, also typically in [0,1]. 0 represents the start of the animation and 1 represents the end. A good implementation returns 0 if *t* = 0 and 1 if *t* = 1. See the [easing explorer](https://observablehq.com/@d3/easing) for a visual demonstration. For example, to apply [cubic](#easeCubic) easing:
+
+```js
+const te = d3.easeCubic(t);
+```
+
+Similarly, to apply custom [elastic](#easeElastic) easing:
+
+```js
+// Before the animation starts, create your easing function.
+const customElastic = d3.easeElastic.period(0.4);
+
+// During the animation, apply the easing function.
+const te = customElastic(t);
+```
+
+# d3.easeLinear (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/linear.js "Source")
+
+Linear easing; the identity function; *linear*(*t*) returns *t*.
+
+[# d3.easePolyIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/poly.js#L3 "Source")
+
+Polynomial easing; raises *t* to the specified [exponent](#poly_exponent). If the exponent is not specified, it defaults to 3, equivalent to [cubicIn](#easeCubicIn).
+
+[# d3.easePolyOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/poly.js#L15 "Source")
+
+Reverse polynomial easing; equivalent to 1 - [polyIn](#easePolyIn)(1 - *t*). If the [exponent](#poly_exponent) is not specified, it defaults to 3, equivalent to [cubicOut](#easeCubicOut).
+
+[# d3.easePoly (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/poly.js "Source")
+# d3.easePolyInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/poly.js#L27 "Source")
+
+Symmetric polynomial easing; scales [polyIn](#easePolyIn) for *t* in [0, 0.5] and [polyOut](#easePolyOut) for *t* in [0.5, 1]. If the [exponent](#poly_exponent) is not specified, it defaults to 3, equivalent to [cubic](#easeCubic).
+
+[# poly .exponent (e ) [<>](https://github.com/d3/d3-ease/blob/master/src/poly.js#L1 "Source")
+
+Returns a new polynomial easing with the specified exponent *e*. For example, to create equivalents of [linear](#easeLinear), [quad](#easeQuad), and [cubic](#easeCubic):
+
+```js
+const linear = d3.easePoly.exponent(1);
+const quad = d3.easePoly.exponent(2);
+const cubic = d3.easePoly.exponent(3);
+```
+
+# d3.easeQuadIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/quad.js#L1 "Source")
+
+Quadratic easing; equivalent to [polyIn](#easePolyIn).[exponent](#poly_exponent)(2).
+
+[# d3.easeQuadOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/quad.js#L5 "Source")
+
+Reverse quadratic easing; equivalent to 1 - [quadIn](#easeQuadIn)(1 - *t*). Also equivalent to [polyOut](#easePolyOut).[exponent](#poly_exponent)(2).
+
+[# d3.easeQuad (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/quad.js "Source")
+# d3.easeQuadInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/quad.js#L9 "Source")
+
+Symmetric quadratic easing; scales [quadIn](#easeQuadIn) for *t* in [0, 0.5] and [quadOut](#easeQuadOut) for *t* in [0.5, 1]. Also equivalent to [poly](#easePoly).[exponent](#poly_exponent)(2).
+
+[# d3.easeCubicIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/cubic.js#L1 "Source")
+
+Cubic easing; equivalent to [polyIn](#easePolyIn).[exponent](#poly_exponent)(3).
+
+[# d3.easeCubicOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/cubic.js#L5 "Source")
+
+Reverse cubic easing; equivalent to 1 - [cubicIn](#easeCubicIn)(1 - *t*). Also equivalent to [polyOut](#easePolyOut).[exponent](#poly_exponent)(3).
+
+[# d3.easeCubic (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/cubic.js "Source")
+# d3.easeCubicInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/cubic.js#L9 "Source")
+
+Symmetric cubic easing; scales [cubicIn](#easeCubicIn) for *t* in [0, 0.5] and [cubicOut](#easeCubicOut) for *t* in [0.5, 1]. Also equivalent to [poly](#easePoly).[exponent](#poly_exponent)(3).
+
+[# d3.easeSinIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/sin.js#L4 "Source")
+
+Sinusoidal easing; returns sin(*t*).
+
+[# d3.easeSinOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/sin.js#L8 "Source")
+
+Reverse sinusoidal easing; equivalent to 1 - [sinIn](#easeSinIn)(1 - *t*).
+
+[# d3.easeSin (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/sin.js "Source")
+# d3.easeSinInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/sin.js#L12 "Source")
+
+Symmetric sinusoidal easing; scales [sinIn](#easeSinIn) for *t* in [0, 0.5] and [sinOut](#easeSinOut) for *t* in [0.5, 1].
+
+[# d3.easeExpIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/exp.js#L1 "Source")
+
+Exponential easing; raises 2 to the exponent 10 \* (*t* - 1).
+
+[# d3.easeExpOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/exp.js#L5 "Source")
+
+Reverse exponential easing; equivalent to 1 - [expIn](#easeExpIn)(1 - *t*).
+
+[# d3.easeExp (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/exp.js "Source")
+# d3.easeExpInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/exp.js#L9 "Source")
+
+Symmetric exponential easing; scales [expIn](#easeExpIn) for *t* in [0, 0.5] and [expOut](#easeExpOut) for *t* in [0.5, 1].
+
+[# d3.easeCircleIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/circle.js#L1 "Source")
+
+Circular easing.
+
+[# d3.easeCircleOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/circle.js#L5 "Source")
+
+Reverse circular easing; equivalent to 1 - [circleIn](#easeCircleIn)(1 - *t*).
+
+[# d3.easeCircle (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/circle.js "Source")
+# d3.easeCircleInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/circle.js#L9 "Source")
+
+Symmetric circular easing; scales [circleIn](#easeCircleIn) for *t* in [0, 0.5] and [circleOut](#easeCircleOut) for *t* in [0.5, 1].
+
+[# d3.easeElasticIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js#L5 "Source")
+
+Elastic easing, like a rubber band. The [amplitude](#elastic_amplitude) and [period](#elastic_period) of the oscillation are configurable; if not specified, they default to 1 and 0.3, respectively.
+
+[# d3.easeElastic (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js "Source")
+# d3.easeElasticOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js#L18 "Source")
+
+Reverse elastic easing; equivalent to 1 - [elasticIn](#easeElasticIn)(1 - *t*).
+
+[# d3.easeElasticInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js#L31 "Source")
+
+Symmetric elastic easing; scales [elasticIn](#easeElasticIn) for *t* in [0, 0.5] and [elasticOut](#easeElasticOut) for *t* in [0.5, 1].
+
+[# elastic .amplitude (a ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js#L40 "Source")
+
+Returns a new elastic easing with the specified amplitude *a*.
+
+# elastic .period (p ) [<>](https://github.com/d3/d3-ease/blob/master/src/elastic.js#L41 "Source")
+
+Returns a new elastic easing with the specified period *p*.
+
+# d3.easeBackIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/back.js#L3 "Source")
+
+[Anticipatory](https://en.wikipedia.org/wiki/12_basic_principles_of_animation#Anticipation) easing, like a dancer bending his knees before jumping off the floor. The degree of [overshoot](#back_overshoot) is configurable; if not specified, it defaults to 1.70158.
+
+[# d3.easeBackOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/back.js#L15 "Source")
+
+Reverse anticipatory easing; equivalent to 1 - [backIn](#easeBackIn)(1 - *t*).
+
+[# d3.easeBack (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/back.js "Source")
+# d3.easeBackInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/back.js#L27 "Source")
+
+Symmetric anticipatory easing; scales [backIn](#easeBackIn) for *t* in [0, 0.5] and [backOut](#easeBackOut) for *t* in [0.5, 1].
+
+[# back .overshoot (s ) [<>](https://github.com/d3/d3-ease/blob/master/src/back.js#L1 "Source")
+
+Returns a new back easing with the specified overshoot *s*.
+
+# d3.easeBounceIn (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/bounce.js#L12 "Source")
+
+Bounce easing, like a rubber ball.
+
+[# d3.easeBounce (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/bounce.js "Source")
+# d3.easeBounceOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/bounce.js#L16 "Source")
+
+Reverse bounce easing; equivalent to 1 - [bounceIn](#easeBounceIn)(1 - *t*).
+
+[# d3.easeBounceInOut (t ) [<>](https://github.com/d3/d3-ease/blob/master/src/bounce.js#L20 "Source")
+
+Symmetric bounce easing; scales [bounceIn](#easeBounceIn) for *t* in [0, 0.5] and [bounceOut](#easeBounceOut) for *t* in [0.5, 1].
+
+[+n,n.easePoly=a,n.easePolyIn=u,n.easePolyInOut=a,n.easePolyOut=r,n.easeQuad=e,n.easeQuadIn=function(n){return n*n},n.easeQuadInOut=e,n.easeQuadOut=function(n){return n*(2-n)},n.easeSin=c,n.easeSinIn=function(n){return 1==+n?1:1-Math.cos(n*i)},n.easeSinInOut=c,n.easeSinOut=function(n){return Math.sin(n*i)},Object.defineProperty(n,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-ease/package.json b/node_modules/d3-ease/package.json
new file mode 100644
index 00000000..4112c6be
--- /dev/null
+++ b/node_modules/d3-ease/package.json
@@ -0,0 +1,80 @@
+{
+ "_from": "d3-ease@3",
+ "_id": "d3-ease@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-wR/XK3D3XcLIZwpbvQwQ5fK+8Ykds1ip7A2Txe0yxncXSdq1L9skcG7blcedkOX+ZcgxGAmLX1FrRGbADwzi0w==",
+ "_location": "/d3-ease",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-ease@3",
+ "name": "d3-ease",
+ "escapedName": "d3-ease",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-transition"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-ease/-/d3-ease-3.0.1.tgz",
+ "_shasum": "9658ac38a2140d59d346160f1f6c30fda0bd12f4",
+ "_spec": "d3-ease@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-ease/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Easing functions for smooth animation.",
+ "devDependencies": {
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-ease.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-ease/",
+ "jsdelivr": "dist/d3-ease.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "ease",
+ "easing",
+ "animation",
+ "transition"
+ ],
+ "license": "BSD-3-Clause",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-ease",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-ease.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-ease.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-ease/src/back.js b/node_modules/d3-ease/src/back.js
new file mode 100644
index 00000000..b9c1bcc9
--- /dev/null
+++ b/node_modules/d3-ease/src/back.js
@@ -0,0 +1,37 @@
+var overshoot = 1.70158;
+
+export var backIn = (function custom(s) {
+ s = +s;
+
+ function backIn(t) {
+ return (t = +t) * t * (s * (t - 1) + t);
+ }
+
+ backIn.overshoot = custom;
+
+ return backIn;
+})(overshoot);
+
+export var backOut = (function custom(s) {
+ s = +s;
+
+ function backOut(t) {
+ return --t * t * ((t + 1) * s + t) + 1;
+ }
+
+ backOut.overshoot = custom;
+
+ return backOut;
+})(overshoot);
+
+export var backInOut = (function custom(s) {
+ s = +s;
+
+ function backInOut(t) {
+ return ((t *= 2) < 1 ? t * t * ((s + 1) * t - s) : (t -= 2) * t * ((s + 1) * t + s) + 2) / 2;
+ }
+
+ backInOut.overshoot = custom;
+
+ return backInOut;
+})(overshoot);
diff --git a/node_modules/d3-ease/src/bounce.js b/node_modules/d3-ease/src/bounce.js
new file mode 100644
index 00000000..d2d81caf
--- /dev/null
+++ b/node_modules/d3-ease/src/bounce.js
@@ -0,0 +1,22 @@
+var b1 = 4 / 11,
+ b2 = 6 / 11,
+ b3 = 8 / 11,
+ b4 = 3 / 4,
+ b5 = 9 / 11,
+ b6 = 10 / 11,
+ b7 = 15 / 16,
+ b8 = 21 / 22,
+ b9 = 63 / 64,
+ b0 = 1 / b1 / b1;
+
+export function bounceIn(t) {
+ return 1 - bounceOut(1 - t);
+}
+
+export function bounceOut(t) {
+ return (t = +t) < b1 ? b0 * t * t : t < b3 ? b0 * (t -= b2) * t + b4 : t < b6 ? b0 * (t -= b5) * t + b7 : b0 * (t -= b8) * t + b9;
+}
+
+export function bounceInOut(t) {
+ return ((t *= 2) <= 1 ? 1 - bounceOut(1 - t) : bounceOut(t - 1) + 1) / 2;
+}
diff --git a/node_modules/d3-ease/src/circle.js b/node_modules/d3-ease/src/circle.js
new file mode 100644
index 00000000..8b9bb1de
--- /dev/null
+++ b/node_modules/d3-ease/src/circle.js
@@ -0,0 +1,11 @@
+export function circleIn(t) {
+ return 1 - Math.sqrt(1 - t * t);
+}
+
+export function circleOut(t) {
+ return Math.sqrt(1 - --t * t);
+}
+
+export function circleInOut(t) {
+ return ((t *= 2) <= 1 ? 1 - Math.sqrt(1 - t * t) : Math.sqrt(1 - (t -= 2) * t) + 1) / 2;
+}
diff --git a/node_modules/d3-ease/src/cubic.js b/node_modules/d3-ease/src/cubic.js
new file mode 100644
index 00000000..bad3a7ca
--- /dev/null
+++ b/node_modules/d3-ease/src/cubic.js
@@ -0,0 +1,11 @@
+export function cubicIn(t) {
+ return t * t * t;
+}
+
+export function cubicOut(t) {
+ return --t * t * t + 1;
+}
+
+export function cubicInOut(t) {
+ return ((t *= 2) <= 1 ? t * t * t : (t -= 2) * t * t + 2) / 2;
+}
diff --git a/node_modules/d3-ease/src/elastic.js b/node_modules/d3-ease/src/elastic.js
new file mode 100644
index 00000000..48ca6733
--- /dev/null
+++ b/node_modules/d3-ease/src/elastic.js
@@ -0,0 +1,46 @@
+import {tpmt} from "./math.js";
+
+var tau = 2 * Math.PI,
+ amplitude = 1,
+ period = 0.3;
+
+export var elasticIn = (function custom(a, p) {
+ var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+ function elasticIn(t) {
+ return a * tpmt(-(--t)) * Math.sin((s - t) / p);
+ }
+
+ elasticIn.amplitude = function(a) { return custom(a, p * tau); };
+ elasticIn.period = function(p) { return custom(a, p); };
+
+ return elasticIn;
+})(amplitude, period);
+
+export var elasticOut = (function custom(a, p) {
+ var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+ function elasticOut(t) {
+ return 1 - a * tpmt(t = +t) * Math.sin((t + s) / p);
+ }
+
+ elasticOut.amplitude = function(a) { return custom(a, p * tau); };
+ elasticOut.period = function(p) { return custom(a, p); };
+
+ return elasticOut;
+})(amplitude, period);
+
+export var elasticInOut = (function custom(a, p) {
+ var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau);
+
+ function elasticInOut(t) {
+ return ((t = t * 2 - 1) < 0
+ ? a * tpmt(-t) * Math.sin((s - t) / p)
+ : 2 - a * tpmt(t) * Math.sin((s + t) / p)) / 2;
+ }
+
+ elasticInOut.amplitude = function(a) { return custom(a, p * tau); };
+ elasticInOut.period = function(p) { return custom(a, p); };
+
+ return elasticInOut;
+})(amplitude, period);
diff --git a/node_modules/d3-ease/src/exp.js b/node_modules/d3-ease/src/exp.js
new file mode 100644
index 00000000..f3c1cf0f
--- /dev/null
+++ b/node_modules/d3-ease/src/exp.js
@@ -0,0 +1,13 @@
+import {tpmt} from "./math.js";
+
+export function expIn(t) {
+ return tpmt(1 - +t);
+}
+
+export function expOut(t) {
+ return 1 - tpmt(t);
+}
+
+export function expInOut(t) {
+ return ((t *= 2) <= 1 ? tpmt(1 - t) : 2 - tpmt(t - 1)) / 2;
+}
diff --git a/node_modules/d3-ease/src/index.js b/node_modules/d3-ease/src/index.js
new file mode 100644
index 00000000..710d3df5
--- /dev/null
+++ b/node_modules/d3-ease/src/index.js
@@ -0,0 +1,66 @@
+export {
+ linear as easeLinear
+} from "./linear.js";
+
+export {
+ quadInOut as easeQuad,
+ quadIn as easeQuadIn,
+ quadOut as easeQuadOut,
+ quadInOut as easeQuadInOut
+} from "./quad.js";
+
+export {
+ cubicInOut as easeCubic,
+ cubicIn as easeCubicIn,
+ cubicOut as easeCubicOut,
+ cubicInOut as easeCubicInOut
+} from "./cubic.js";
+
+export {
+ polyInOut as easePoly,
+ polyIn as easePolyIn,
+ polyOut as easePolyOut,
+ polyInOut as easePolyInOut
+} from "./poly.js";
+
+export {
+ sinInOut as easeSin,
+ sinIn as easeSinIn,
+ sinOut as easeSinOut,
+ sinInOut as easeSinInOut
+} from "./sin.js";
+
+export {
+ expInOut as easeExp,
+ expIn as easeExpIn,
+ expOut as easeExpOut,
+ expInOut as easeExpInOut
+} from "./exp.js";
+
+export {
+ circleInOut as easeCircle,
+ circleIn as easeCircleIn,
+ circleOut as easeCircleOut,
+ circleInOut as easeCircleInOut
+} from "./circle.js";
+
+export {
+ bounceOut as easeBounce,
+ bounceIn as easeBounceIn,
+ bounceOut as easeBounceOut,
+ bounceInOut as easeBounceInOut
+} from "./bounce.js";
+
+export {
+ backInOut as easeBack,
+ backIn as easeBackIn,
+ backOut as easeBackOut,
+ backInOut as easeBackInOut
+} from "./back.js";
+
+export {
+ elasticOut as easeElastic,
+ elasticIn as easeElasticIn,
+ elasticOut as easeElasticOut,
+ elasticInOut as easeElasticInOut
+} from "./elastic.js";
diff --git a/node_modules/d3-ease/src/linear.js b/node_modules/d3-ease/src/linear.js
new file mode 100644
index 00000000..7b7d2c11
--- /dev/null
+++ b/node_modules/d3-ease/src/linear.js
@@ -0,0 +1 @@
+export const linear = t => +t;
diff --git a/node_modules/d3-ease/src/math.js b/node_modules/d3-ease/src/math.js
new file mode 100644
index 00000000..d342db17
--- /dev/null
+++ b/node_modules/d3-ease/src/math.js
@@ -0,0 +1,4 @@
+// tpmt is two power minus ten times t scaled to [0,1]
+export function tpmt(x) {
+ return (Math.pow(2, -10 * x) - 0.0009765625) * 1.0009775171065494;
+}
diff --git a/node_modules/d3-ease/src/poly.js b/node_modules/d3-ease/src/poly.js
new file mode 100644
index 00000000..827cf874
--- /dev/null
+++ b/node_modules/d3-ease/src/poly.js
@@ -0,0 +1,37 @@
+var exponent = 3;
+
+export var polyIn = (function custom(e) {
+ e = +e;
+
+ function polyIn(t) {
+ return Math.pow(t, e);
+ }
+
+ polyIn.exponent = custom;
+
+ return polyIn;
+})(exponent);
+
+export var polyOut = (function custom(e) {
+ e = +e;
+
+ function polyOut(t) {
+ return 1 - Math.pow(1 - t, e);
+ }
+
+ polyOut.exponent = custom;
+
+ return polyOut;
+})(exponent);
+
+export var polyInOut = (function custom(e) {
+ e = +e;
+
+ function polyInOut(t) {
+ return ((t *= 2) <= 1 ? Math.pow(t, e) : 2 - Math.pow(2 - t, e)) / 2;
+ }
+
+ polyInOut.exponent = custom;
+
+ return polyInOut;
+})(exponent);
diff --git a/node_modules/d3-ease/src/quad.js b/node_modules/d3-ease/src/quad.js
new file mode 100644
index 00000000..df65bc29
--- /dev/null
+++ b/node_modules/d3-ease/src/quad.js
@@ -0,0 +1,11 @@
+export function quadIn(t) {
+ return t * t;
+}
+
+export function quadOut(t) {
+ return t * (2 - t);
+}
+
+export function quadInOut(t) {
+ return ((t *= 2) <= 1 ? t * t : --t * (2 - t) + 1) / 2;
+}
diff --git a/node_modules/d3-ease/src/sin.js b/node_modules/d3-ease/src/sin.js
new file mode 100644
index 00000000..d8e09b8e
--- /dev/null
+++ b/node_modules/d3-ease/src/sin.js
@@ -0,0 +1,14 @@
+var pi = Math.PI,
+ halfPi = pi / 2;
+
+export function sinIn(t) {
+ return (+t === 1) ? 1 : 1 - Math.cos(t * halfPi);
+}
+
+export function sinOut(t) {
+ return Math.sin(t * halfPi);
+}
+
+export function sinInOut(t) {
+ return (1 - Math.cos(pi * t)) / 2;
+}
diff --git a/node_modules/d3-fetch/LICENSE b/node_modules/d3-fetch/LICENSE
new file mode 100644
index 00000000..ff794014
--- /dev/null
+++ b/node_modules/d3-fetch/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2016-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-fetch/README.md b/node_modules/d3-fetch/README.md
new file mode 100644
index 00000000..a9451a19
--- /dev/null
+++ b/node_modules/d3-fetch/README.md
@@ -0,0 +1,111 @@
+# d3-fetch
+
+This module provides convenient parsing on top of [Fetch](https://fetch.spec.whatwg.org/). For example, to load a text file:
+
+```js
+const text = await d3.text("/path/to/file.txt");
+console.log(text); // Hello, world!
+```
+
+To load and parse a CSV file:
+
+```js
+const data = await d3.csv("/path/to/file.csv");
+console.log(data); // [{"Hello": "world"}, …]
+```
+
+This module has built-in support for parsing [JSON](#json), [CSV](#csv), and [TSV](#tsv). You can parse additional formats by using [text](#text) directly. (This module replaced [d3-request](https://github.com/d3/d3-request).)
+
+## Installing
+
+If you use npm, `npm install d3-fetch`. You can also download the [latest release on GitHub](https://github.com/d3/d3-fetch/releases/latest). For vanilla HTML in modern browsers, import d3-fetch from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-fetch’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+# d3.blob (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/blob.js "Source")
+
+Fetches the binary file at the specified *input* URL as a Blob. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
+
+# d3.buffer (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/buffer.js "Source")
+
+Fetches the binary file at the specified *input* URL as an ArrayBuffer. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
+
+# d3.csv (input [, init ][, row ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/dsv.js "Source")
+
+Equivalent to [d3.dsv](#dsv) with the comma character as the delimiter.
+
+# d3.dsv (delimiter , input [, init ][, row ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/dsv.js "Source")
+
+Fetches the [DSV](https://github.com/d3/d3-dsv) file at the specified *input* URL. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields. An optional *row* conversion function may be specified to map and filter row objects to a more-specific representation; see [*dsv*.parse](https://github.com/d3/d3-dsv#dsv_parse) for details. For example:
+
+```js
+const data = await d3.dsv(",", "test.csv", (d) => {
+ return {
+ year: new Date(+d.Year, 0, 1), // convert "Year" column to Date
+ make: d.Make,
+ model: d.Model,
+ length: +d.Length // convert "Length" column to number
+ };
+});
+```
+
+If only one of *init* and *row* is specified, it is interpreted as the *row* conversion function if it is a function, and otherwise an *init* object.
+
+See also [d3.csv](#csv) and [d3.tsv](#tsv).
+
+# d3.html (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/xml.js "Source")
+
+Fetches the file at the specified *input* URL as [text](#text) and then [parses it](https://developer.mozilla.org/docs/Web/API/DOMParser) as HTML. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
+
+# d3.image (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/image.js "Source")
+
+Fetches the image at the specified *input* URL. If *init* is specified, sets any additional properties on the image before loading. For example, to enable an anonymous [cross-origin request](https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image):
+
+```js
+const img = await d3.image("https://example.com/test.png", {crossOrigin: "anonymous"});
+```
+
+# d3.json (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/json.js "Source")
+
+Fetches the [JSON](http://json.org) file at the specified *input* URL. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields. If the server returns a status code of [204 No Content](https://developer.mozilla.org/docs/Web/HTTP/Status/204) or [205 Reset Content](https://developer.mozilla.org/docs/Web/HTTP/Status/205), the promise resolves to `undefined`.
+
+# d3.svg (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/xml.js "Source")
+
+Fetches the file at the specified *input* URL as [text](#text) and then [parses it](https://developer.mozilla.org/docs/Web/API/DOMParser) as SVG. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
+
+# d3.text (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/text.js "Source")
+
+Fetches the text file at the specified *input* URL. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
+
+# d3.tsv (input [, init ][, row ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/dsv.js "Source")
+
+Equivalent to [d3.dsv](#dsv) with the tab character as the delimiter.
+
+# d3.xml (input [, init ]) · [Source](https://github.com/d3/d3-fetch/blob/master/src/xml.js "Source")
+
+Fetches the file at the specified *input* URL as [text](#text) and then [parses it](https://developer.mozilla.org/docs/Web/API/DOMParser) as XML. If *init* is specified, it is passed along to the underlying call to [fetch](https://fetch.spec.whatwg.org/#fetch-method); see [RequestInit](https://fetch.spec.whatwg.org/#requestinit) for allowed fields.
diff --git a/node_modules/d3-fetch/dist/d3-fetch.js b/node_modules/d3-fetch/dist/d3-fetch.js
new file mode 100644
index 00000000..a50bf0ea
--- /dev/null
+++ b/node_modules/d3-fetch/dist/d3-fetch.js
@@ -0,0 +1,100 @@
+// https://d3js.org/d3-fetch/ v3.0.1 Copyright 2016-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-dsv')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-dsv'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+}(this, (function (exports, d3Dsv) { 'use strict';
+
+function responseBlob(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.blob();
+}
+
+function blob(input, init) {
+ return fetch(input, init).then(responseBlob);
+}
+
+function responseArrayBuffer(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.arrayBuffer();
+}
+
+function buffer(input, init) {
+ return fetch(input, init).then(responseArrayBuffer);
+}
+
+function responseText(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.text();
+}
+
+function text(input, init) {
+ return fetch(input, init).then(responseText);
+}
+
+function dsvParse(parse) {
+ return function(input, init, row) {
+ if (arguments.length === 2 && typeof init === "function") row = init, init = undefined;
+ return text(input, init).then(function(response) {
+ return parse(response, row);
+ });
+ };
+}
+
+function dsv(delimiter, input, init, row) {
+ if (arguments.length === 3 && typeof init === "function") row = init, init = undefined;
+ var format = d3Dsv.dsvFormat(delimiter);
+ return text(input, init).then(function(response) {
+ return format.parse(response, row);
+ });
+}
+
+var csv = dsvParse(d3Dsv.csvParse);
+var tsv = dsvParse(d3Dsv.tsvParse);
+
+function image(input, init) {
+ return new Promise(function(resolve, reject) {
+ var image = new Image;
+ for (var key in init) image[key] = init[key];
+ image.onerror = reject;
+ image.onload = function() { resolve(image); };
+ image.src = input;
+ });
+}
+
+function responseJson(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ if (response.status === 204 || response.status === 205) return;
+ return response.json();
+}
+
+function json(input, init) {
+ return fetch(input, init).then(responseJson);
+}
+
+function parser(type) {
+ return (input, init) => text(input, init)
+ .then(text => (new DOMParser).parseFromString(text, type));
+}
+
+var xml = parser("application/xml");
+
+var html = parser("text/html");
+
+var svg = parser("image/svg+xml");
+
+exports.blob = blob;
+exports.buffer = buffer;
+exports.csv = csv;
+exports.dsv = dsv;
+exports.html = html;
+exports.image = image;
+exports.json = json;
+exports.svg = svg;
+exports.text = text;
+exports.tsv = tsv;
+exports.xml = xml;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-fetch/dist/d3-fetch.min.js b/node_modules/d3-fetch/dist/d3-fetch.min.js
new file mode 100644
index 00000000..18eed2fd
--- /dev/null
+++ b/node_modules/d3-fetch/dist/d3-fetch.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-fetch/ v3.0.1 Copyright 2016-2021 Mike Bostock
+!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports,require("d3-dsv")):"function"==typeof define&&define.amd?define(["exports","d3-dsv"],n):n((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{},t.d3)}(this,(function(t,n){"use strict";function e(t){if(!t.ok)throw new Error(t.status+" "+t.statusText);return t.blob()}function r(t){if(!t.ok)throw new Error(t.status+" "+t.statusText);return t.arrayBuffer()}function o(t){if(!t.ok)throw new Error(t.status+" "+t.statusText);return t.text()}function u(t,n){return fetch(t,n).then(o)}function f(t){return function(n,e,r){return 2===arguments.length&&"function"==typeof e&&(r=e,e=void 0),u(n,e).then((function(n){return t(n,r)}))}}var s=f(n.csvParse),i=f(n.tsvParse);function a(t){if(!t.ok)throw new Error(t.status+" "+t.statusText);if(204!==t.status&&205!==t.status)return t.json()}function c(t){return(n,e)=>u(n,e).then((n=>(new DOMParser).parseFromString(n,t)))}var d=c("application/xml"),h=c("text/html"),l=c("image/svg+xml");t.blob=function(t,n){return fetch(t,n).then(e)},t.buffer=function(t,n){return fetch(t,n).then(r)},t.csv=s,t.dsv=function(t,e,r,o){3===arguments.length&&"function"==typeof r&&(o=r,r=void 0);var f=n.dsvFormat(t);return u(e,r).then((function(t){return f.parse(t,o)}))},t.html=h,t.image=function(t,n){return new Promise((function(e,r){var o=new Image;for(var u in n)o[u]=n[u];o.onerror=r,o.onload=function(){e(o)},o.src=t}))},t.json=function(t,n){return fetch(t,n).then(a)},t.svg=l,t.text=u,t.tsv=i,t.xml=d,Object.defineProperty(t,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-fetch/package.json b/node_modules/d3-fetch/package.json
new file mode 100644
index 00000000..3c7b79f1
--- /dev/null
+++ b/node_modules/d3-fetch/package.json
@@ -0,0 +1,81 @@
+{
+ "_from": "d3-fetch@3",
+ "_id": "d3-fetch@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-kpkQIM20n3oLVBKGg6oHrUchHM3xODkTzjMoj7aWQFq5QEM+R6E4WkzT5+tojDY7yjez8KgCBRoj4aEr99Fdqw==",
+ "_location": "/d3-fetch",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-fetch@3",
+ "name": "d3-fetch",
+ "escapedName": "d3-fetch",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-fetch/-/d3-fetch-3.0.1.tgz",
+ "_shasum": "83141bff9856a0edb5e38de89cdcfe63d0a60a22",
+ "_spec": "d3-fetch@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-fetch/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-dsv": "1 - 3"
+ },
+ "deprecated": false,
+ "description": "Convenient parsing for Fetch.",
+ "devDependencies": {
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-fetch.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-fetch/",
+ "jsdelivr": "dist/d3-fetch.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "fetch",
+ "ajax",
+ "XMLHttpRequest"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-fetch",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-fetch.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-fetch.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-fetch/src/blob.js b/node_modules/d3-fetch/src/blob.js
new file mode 100644
index 00000000..646664c3
--- /dev/null
+++ b/node_modules/d3-fetch/src/blob.js
@@ -0,0 +1,8 @@
+function responseBlob(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.blob();
+}
+
+export default function(input, init) {
+ return fetch(input, init).then(responseBlob);
+}
diff --git a/node_modules/d3-fetch/src/buffer.js b/node_modules/d3-fetch/src/buffer.js
new file mode 100644
index 00000000..f776a94b
--- /dev/null
+++ b/node_modules/d3-fetch/src/buffer.js
@@ -0,0 +1,8 @@
+function responseArrayBuffer(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.arrayBuffer();
+}
+
+export default function(input, init) {
+ return fetch(input, init).then(responseArrayBuffer);
+}
diff --git a/node_modules/d3-fetch/src/dsv.js b/node_modules/d3-fetch/src/dsv.js
new file mode 100644
index 00000000..99d7bc39
--- /dev/null
+++ b/node_modules/d3-fetch/src/dsv.js
@@ -0,0 +1,22 @@
+import {csvParse, dsvFormat, tsvParse} from "d3-dsv";
+import text from "./text.js";
+
+function dsvParse(parse) {
+ return function(input, init, row) {
+ if (arguments.length === 2 && typeof init === "function") row = init, init = undefined;
+ return text(input, init).then(function(response) {
+ return parse(response, row);
+ });
+ };
+}
+
+export default function dsv(delimiter, input, init, row) {
+ if (arguments.length === 3 && typeof init === "function") row = init, init = undefined;
+ var format = dsvFormat(delimiter);
+ return text(input, init).then(function(response) {
+ return format.parse(response, row);
+ });
+}
+
+export var csv = dsvParse(csvParse);
+export var tsv = dsvParse(tsvParse);
diff --git a/node_modules/d3-fetch/src/image.js b/node_modules/d3-fetch/src/image.js
new file mode 100644
index 00000000..c80a74bc
--- /dev/null
+++ b/node_modules/d3-fetch/src/image.js
@@ -0,0 +1,9 @@
+export default function(input, init) {
+ return new Promise(function(resolve, reject) {
+ var image = new Image;
+ for (var key in init) image[key] = init[key];
+ image.onerror = reject;
+ image.onload = function() { resolve(image); };
+ image.src = input;
+ });
+}
diff --git a/node_modules/d3-fetch/src/index.js b/node_modules/d3-fetch/src/index.js
new file mode 100644
index 00000000..f3ac0f99
--- /dev/null
+++ b/node_modules/d3-fetch/src/index.js
@@ -0,0 +1,7 @@
+export {default as blob} from "./blob.js";
+export {default as buffer} from "./buffer.js";
+export {default as dsv, csv, tsv} from "./dsv.js";
+export {default as image} from "./image.js";
+export {default as json} from "./json.js";
+export {default as text} from "./text.js";
+export {default as xml, html, svg} from "./xml.js";
diff --git a/node_modules/d3-fetch/src/json.js b/node_modules/d3-fetch/src/json.js
new file mode 100644
index 00000000..25e9798d
--- /dev/null
+++ b/node_modules/d3-fetch/src/json.js
@@ -0,0 +1,9 @@
+function responseJson(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ if (response.status === 204 || response.status === 205) return;
+ return response.json();
+}
+
+export default function(input, init) {
+ return fetch(input, init).then(responseJson);
+}
diff --git a/node_modules/d3-fetch/src/text.js b/node_modules/d3-fetch/src/text.js
new file mode 100644
index 00000000..8ea18f8e
--- /dev/null
+++ b/node_modules/d3-fetch/src/text.js
@@ -0,0 +1,8 @@
+function responseText(response) {
+ if (!response.ok) throw new Error(response.status + " " + response.statusText);
+ return response.text();
+}
+
+export default function(input, init) {
+ return fetch(input, init).then(responseText);
+}
diff --git a/node_modules/d3-fetch/src/xml.js b/node_modules/d3-fetch/src/xml.js
new file mode 100644
index 00000000..56282804
--- /dev/null
+++ b/node_modules/d3-fetch/src/xml.js
@@ -0,0 +1,12 @@
+import text from "./text.js";
+
+function parser(type) {
+ return (input, init) => text(input, init)
+ .then(text => (new DOMParser).parseFromString(text, type));
+}
+
+export default parser("application/xml");
+
+export var html = parser("text/html");
+
+export var svg = parser("image/svg+xml");
diff --git a/node_modules/d3-force/LICENSE b/node_modules/d3-force/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-force/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-force/README.md b/node_modules/d3-force/README.md
new file mode 100644
index 00000000..d81dc1de
--- /dev/null
+++ b/node_modules/d3-force/README.md
@@ -0,0 +1,480 @@
+# d3-force
+
+This module implements a [velocity Verlet](https://en.wikipedia.org/wiki/Verlet_integration) numerical integrator for simulating physical forces on particles. The simulation is simplified: it assumes a constant unit time step Δ*t* = 1 for each step, and a constant unit mass *m* = 1 for all particles. As a result, a force *F* acting on a particle is equivalent to a constant acceleration *a* over the time interval Δ*t*, and can be simulated simply by adding to the particle’s velocity, which is then added to the particle’s position.
+
+In the domain of information visualization, physical simulations are useful for studying [networks](https://observablehq.com/@d3/force-directed-graph) and [hierarchies](https://observablehq.com/@d3/force-directed-tree)!
+
+[# d3.forceSimulation ([nodes ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Creates a new simulation with the specified array of [*nodes*](#simulation_nodes) and no [forces](#simulation_force). If *nodes* is not specified, it defaults to the empty array. The simulator [starts](#simulation_restart) automatically; use [*simulation*.on](#simulation_on) to listen for tick events as the simulation runs. If you wish to run the simulation manually instead, call [*simulation*.stop](#simulation_stop), and then call [*simulation*.tick](#simulation_tick) as desired.
+
+# simulation .restart () · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Restarts the simulation’s internal timer and returns the simulation. In conjunction with [*simulation*.alphaTarget](#simulation_alphaTarget) or [*simulation*.alpha](#simulation_alpha), this method can be used to “reheat” the simulation during interaction, such as when dragging a node, or to resume the simulation after temporarily pausing it with [*simulation*.stop](#simulation_stop).
+
+# simulation .stop () · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Stops the simulation’s internal timer, if it is running, and returns the simulation. If the timer is already stopped, this method does nothing. This method is useful for running the simulation manually; see [*simulation*.tick](#simulation_tick).
+
+# simulation .tick ([iterations ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Manually steps the simulation by the specified number of *iterations*, and returns the simulation. If *iterations* is not specified, it defaults to 1 (single step).
+
+For each iteration, it increments the current [*alpha*](#simulation_alpha) by ([*alphaTarget*](#simulation_alphaTarget) - *alpha*) × [*alphaDecay*](#simulation_alphaDecay); then invokes each registered [force](#simulation_force), passing the new *alpha*; then decrements each [node](#simulation_nodes)’s velocity by *velocity* × [*velocityDecay*](#simulation_velocityDecay); lastly increments each node’s position by *velocity*.
+
+This method does not dispatch [events](#simulation_on); events are only dispatched by the internal timer when the simulation is started automatically upon [creation](#forceSimulation) or by calling [*simulation*.restart](#simulation_restart). The natural number of ticks when the simulation is started is ⌈*log*([*alphaMin*](#simulation_alphaMin)) / *log*(1 - [*alphaDecay*](#simulation_alphaDecay))⌉; by default, this is 300.
+
+This method can be used in conjunction with [*simulation*.stop](#simulation_stop) to compute a [static force layout](https://bl.ocks.org/mbostock/1667139). For large graphs, static layouts should be computed [in a web worker](https://bl.ocks.org/mbostock/01ab2e85e8727d6529d20391c0fd9a16) to avoid freezing the user interface.
+
+# simulation .nodes ([nodes ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *nodes* is specified, sets the simulation’s nodes to the specified array of objects, initializing their positions and velocities if necessary, and then [re-initializes](#force_initialize) any bound [forces](#simulation_force); returns the simulation. If *nodes* is not specified, returns the simulation’s array of nodes as specified to the [constructor](#forceSimulation).
+
+Each *node* must be an object. The following properties are assigned by the simulation:
+
+* `index` - the node’s zero-based index into *nodes*
+* `x` - the node’s current *x*-position
+* `y` - the node’s current *y*-position
+* `vx` - the node’s current *x*-velocity
+* `vy` - the node’s current *y*-velocity
+
+The position ⟨*x*,*y*⟩ and velocity ⟨*vx*,*vy*⟩ may be subsequently modified by [forces](#forces) and by the simulation. If either *vx* or *vy* is NaN, the velocity is initialized to ⟨0,0⟩. If either *x* or *y* is NaN, the position is initialized in a [phyllotaxis arrangement](https://observablehq.com/@d3/force-layout-phyllotaxis), so chosen to ensure a deterministic, uniform distribution.
+
+To fix a node in a given position, you may specify two additional properties:
+
+* `fx` - the node’s fixed *x*-position
+* `fy` - the node’s fixed *y*-position
+
+At the end of each [tick](#simulation_tick), after the application of any forces, a node with a defined *node*.fx has *node*.x reset to this value and *node*.vx set to zero; likewise, a node with a defined *node*.fy has *node*.y reset to this value and *node*.vy set to zero. To unfix a node that was previously fixed, set *node*.fx and *node*.fy to null, or delete these properties.
+
+If the specified array of *nodes* is modified, such as when nodes are added to or removed from the simulation, this method must be called again with the new (or changed) array to notify the simulation and bound forces of the change; the simulation does not make a defensive copy of the specified array.
+
+# simulation .alpha ([alpha ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+*alpha* is roughly analogous to temperature in [simulated annealing](https://en.wikipedia.org/wiki/Simulated_annealing#Overview). It decreases over time as the simulation “cools down”. When *alpha* reaches *alphaMin*, the simulation stops; see [*simulation*.restart](#simulation_restart).
+
+If *alpha* is specified, sets the current alpha to the specified number in the range [0,1] and returns this simulation. If *alpha* is not specified, returns the current alpha value, which defaults to 1.
+
+# simulation .alphaMin ([min ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *min* is specified, sets the minimum *alpha* to the specified number in the range [0,1] and returns this simulation. If *min* is not specified, returns the current minimum *alpha* value, which defaults to 0.001. The simulation’s internal timer stops when the current [*alpha*](#simulation_alpha) is less than the minimum *alpha*. The default [alpha decay rate](#simulation_alphaDecay) of ~0.0228 corresponds to 300 iterations.
+
+# simulation .alphaDecay ([decay ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *decay* is specified, sets the [*alpha*](#simulation_alpha) decay rate to the specified number in the range [0,1] and returns this simulation. If *decay* is not specified, returns the current *alpha* decay rate, which defaults to 0.0228… = 1 - *pow*(0.001, 1 / 300) where 0.001 is the default [minimum *alpha*](#simulation_alphaMin).
+
+The alpha decay rate determines how quickly the current alpha interpolates towards the desired [target *alpha*](#simulation_alphaTarget); since the default target *alpha* is zero, by default this controls how quickly the simulation cools. Higher decay rates cause the simulation to stabilize more quickly, but risk getting stuck in a local minimum; lower values cause the simulation to take longer to run, but typically converge on a better layout. To have the simulation run forever at the current *alpha*, set the *decay* rate to zero; alternatively, set a [target *alpha*](#simulation_alphaTarget) greater than the [minimum *alpha*](#simulation_alphaMin).
+
+# simulation .alphaTarget ([target ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *target* is specified, sets the current target [*alpha*](#simulation_alpha) to the specified number in the range [0,1] and returns this simulation. If *target* is not specified, returns the current target alpha value, which defaults to 0.
+
+# simulation .velocityDecay ([decay ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *decay* is specified, sets the velocity decay factor to the specified number in the range [0,1] and returns this simulation. If *decay* is not specified, returns the current velocity decay factor, which defaults to 0.4. The decay factor is akin to atmospheric friction; after the application of any forces during a [tick](#simulation_tick), each node’s velocity is multiplied by 1 - *decay*. As with lowering the [alpha decay rate](#simulation_alphaDecay), less velocity decay may converge on a better solution, but risks numerical instabilities and oscillation.
+
+# simulation .force (name [, force ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *force* is specified, assigns the [force](#forces) for the specified *name* and returns this simulation. If *force* is not specified, returns the force with the specified name, or undefined if there is no such force. (By default, new simulations have no forces.) For example, to create a new simulation to layout a graph, you might say:
+
+```js
+var simulation = d3.forceSimulation(nodes)
+ .force("charge", d3.forceManyBody())
+ .force("link", d3.forceLink(links))
+ .force("center", d3.forceCenter());
+```
+
+To remove the force with the given *name*, pass null as the *force*. For example, to remove the charge force:
+
+```js
+simulation.force("charge", null);
+```
+
+# simulation .find (x , y [, radius ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Returns the node closest to the position ⟨*x*,*y*⟩ with the given search *radius*. If *radius* is not specified, it defaults to infinity. If there is no node within the search area, returns undefined.
+
+# simulation .randomSource ([source ]) [<>](https://github.com/d3/d3-force/blob/master/src/simulation.js "Source"))
+
+If *source* is specified, sets the function used to generate random numbers; this should be a function that returns a number between 0 (inclusive) and 1 (exclusive). If *source* is not specified, returns this simulation’s current random source which defaults to a fixed-seed [linear congruential generator](https://en.wikipedia.org/wiki/Linear_congruential_generator). See also [*random*.source](https://github.com/d3/d3-random/blob/master/README.md#random_source).
+
+# simulation .on (typenames , [listener ]) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+If *listener* is specified, sets the event *listener* for the specified *typenames* and returns this simulation. If an event listener was already registered for the same type and name, the existing listener is removed before the new listener is added. If *listener* is null, removes the current event listeners for the specified *typenames*, if any. If *listener* is not specified, returns the first currently-assigned listener matching the specified *typenames*, if any. When a specified event is dispatched, each *listener* will be invoked with the `this` context as the simulation.
+
+The *typenames* is a string containing one or more *typename* separated by whitespace. Each *typename* is a *type*, optionally followed by a period (`.`) and a *name*, such as `tick.foo` and `tick.bar`; the name allows multiple listeners to be registered for the same *type*. The *type* must be one of the following:
+
+* `tick` - after each tick of the simulation’s internal timer.
+* `end` - after the simulation’s timer stops when *alpha* < [*alphaMin*](#simulation_alphaMin).
+
+Note that *tick* events are not dispatched when [*simulation*.tick](#simulation_tick) is called manually; events are only dispatched by the internal timer and are intended for interactive rendering of the simulation. To affect the simulation, register [forces](#simulation_force) instead of modifying nodes’ positions or velocities inside a tick event listener.
+
+See [*dispatch*.on](https://github.com/d3/d3-dispatch#dispatch_on) for details.
+
+### Forces
+
+A *force* is simply a function that modifies nodes’ positions or velocities; in this context, a *force* can apply a classical physical force such as electrical charge or gravity, or it can resolve a geometric constraint, such as keeping nodes within a bounding box or keeping linked nodes a fixed distance apart. For example, a simple positioning force that moves nodes towards the origin ⟨0,0⟩ might be implemented as:
+
+```js
+function force(alpha) {
+ for (var i = 0, n = nodes.length, node, k = alpha * 0.1; i < n; ++i) {
+ node = nodes[i];
+ node.vx -= node.x * k;
+ node.vy -= node.y * k;
+ }
+}
+```
+
+Forces typically read the node’s current position ⟨*x*,*y*⟩ and then add to (or subtract from) the node’s velocity ⟨*vx*,*vy*⟩. However, forces may also “peek ahead” to the anticipated next position of the node, ⟨*x* + *vx*,*y* + *vy*⟩; this is necessary for resolving geometric constraints through [iterative relaxation](https://en.wikipedia.org/wiki/Relaxation_\(iterative_method\)). Forces may also modify the position directly, which is sometimes useful to avoid adding energy to the simulation, such as when recentering the simulation in the viewport.
+
+Simulations typically compose multiple forces as desired. This module provides several for your enjoyment:
+
+* [Centering](#centering)
+* [Collision](#collision)
+* [Links](#links)
+* [Many-Body](#many-body)
+* [Positioning](#positioning)
+
+Forces may optionally implement [*force*.initialize](#force_initialize) to receive the simulation’s array of nodes.
+
+# force (alpha ) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Applies this force, optionally observing the specified *alpha*. Typically, the force is applied to the array of nodes previously passed to [*force*.initialize](#force_initialize), however, some forces may apply to a subset of nodes, or behave differently. For example, [d3.forceLink](#links) applies to the source and target of each link.
+
+# force .initialize (nodes ) · [Source](https://github.com/d3/d3-force/blob/master/src/simulation.js)
+
+Supplies the array of *nodes* and *random* source to this force. This method is called when a force is bound to a simulation via [*simulation*.force](#simulation_force) and when the simulation’s nodes change via [*simulation*.nodes](#simulation_nodes). A force may perform necessary work during initialization, such as evaluating per-node parameters, to avoid repeatedly performing work during each application of the force.
+
+#### Centering
+
+The centering force translates nodes uniformly so that the mean position of all nodes (the center of mass if all nodes have equal weight) is at the given position ⟨[*x*](#center_x),[*y*](#center_y)⟩. This force modifies the positions of nodes on each application; it does not modify velocities, as doing so would typically cause the nodes to overshoot and oscillate around the desired center. This force helps keeps nodes in the center of the viewport, and unlike the [positioning force](#positioning), it does not distort their relative positions.
+
+# d3.forceCenter ([x , y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/center.js)
+
+Creates a new centering force with the specified [*x*-](#center_x) and [*y*-](#center_y) coordinates. If *x* and *y* are not specified, they default to ⟨0,0⟩.
+
+# center .x ([x ]) · [Source](https://github.com/d3/d3-force/blob/master/src/center.js)
+
+If *x* is specified, sets the *x*-coordinate of the centering position to the specified number and returns this force. If *x* is not specified, returns the current *x*-coordinate, which defaults to zero.
+
+# center .y ([y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/center.js)
+
+If *y* is specified, sets the *y*-coordinate of the centering position to the specified number and returns this force. If *y* is not specified, returns the current *y*-coordinate, which defaults to zero.
+
+# center .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/center.js), [Examples](https://observablehq.com/@d3/forcecenter-strength)
+
+If *strength* is specified, sets the centering force’s strength. A reduced strength of e.g. 0.05 softens the movements on interactive graphs in which new nodes enter or exit the graph. If *strength* is not specified, returns the force’s current strength, which defaults to 1.
+
+#### Collision
+
+The collision force treats nodes as circles with a given [radius](#collide_radius), rather than points, and prevents nodes from overlapping. More formally, two nodes *a* and *b* are separated so that the distance between *a* and *b* is at least *radius*(*a*) + *radius*(*b*). To reduce jitter, this is by default a “soft” constraint with a configurable [strength](#collide_strength) and [iteration count](#collide_iterations).
+
+# d3.forceCollide ([radius ]) · [Source](https://github.com/d3/d3-force/blob/master/src/collide.js)
+
+Creates a new circle collision force with the specified [*radius*](#collide_radius). If *radius* is not specified, it defaults to the constant one for all nodes.
+
+# collide .radius ([radius ]) · [Source](https://github.com/d3/d3-force/blob/master/src/collide.js)
+
+If *radius* is specified, sets the radius accessor to the specified number or function, re-evaluates the radius accessor for each node, and returns this force. If *radius* is not specified, returns the current radius accessor, which defaults to:
+
+```js
+function radius() {
+ return 1;
+}
+```
+
+The radius accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the radius of each node is only recomputed when the force is initialized or when this method is called with a new *radius*, and not on every application of the force.
+
+# collide .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/collide.js)
+
+If *strength* is specified, sets the force strength to the specified number in the range [0,1] and returns this force. If *strength* is not specified, returns the current strength which defaults to 1.
+
+Overlapping nodes are resolved through iterative relaxation. For each node, the other nodes that are anticipated to overlap at the next tick (using the anticipated positions ⟨*x* + *vx*,*y* + *vy*⟩) are determined; the node’s velocity is then modified to push the node out of each overlapping node. The change in velocity is dampened by the force’s strength such that the resolution of simultaneous overlaps can be blended together to find a stable solution.
+
+# collide .iterations ([iterations ]) · [Source](https://github.com/d3/d3-force/blob/master/src/collide.js)
+
+If *iterations* is specified, sets the number of iterations per application to the specified number and returns this force. If *iterations* is not specified, returns the current iteration count which defaults to 1. Increasing the number of iterations greatly increases the rigidity of the constraint and avoids partial overlap of nodes, but also increases the runtime cost to evaluate the force.
+
+#### Links
+
+The link force pushes linked nodes together or apart according to the desired [link distance](#link_distance). The strength of the force is proportional to the difference between the linked nodes’ distance and the target distance, similar to a spring force.
+
+# d3.forceLink ([links ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+Creates a new link force with the specified *links* and default parameters. If *links* is not specified, it defaults to the empty array.
+
+# link .links ([links ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+If *links* is specified, sets the array of links associated with this force, recomputes the [distance](#link_distance) and [strength](#link_strength) parameters for each link, and returns this force. If *links* is not specified, returns the current array of links, which defaults to the empty array.
+
+Each link is an object with the following properties:
+
+* `source` - the link’s source node; see [*simulation*.nodes](#simulation_nodes)
+* `target` - the link’s target node; see [*simulation*.nodes](#simulation_nodes)
+* `index` - the zero-based index into *links*, assigned by this method
+
+For convenience, a link’s source and target properties may be initialized using numeric or string identifiers rather than object references; see [*link*.id](#link_id). When the link force is [initialized](#force_initialize) (or re-initialized, as when the nodes or links change), any *link*.source or *link*.target property which is *not* an object is replaced by an object reference to the corresponding *node* with the given identifier.
+
+If the specified array of *links* is modified, such as when links are added to or removed from the simulation, this method must be called again with the new (or changed) array to notify the force of the change; the force does not make a defensive copy of the specified array.
+
+# link .id ([id ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+If *id* is specified, sets the node id accessor to the specified function and returns this force. If *id* is not specified, returns the current node id accessor, which defaults to the numeric *node*.index:
+
+```js
+function id(d) {
+ return d.index;
+}
+```
+
+The default id accessor allows each link’s source and target to be specified as a zero-based index into the [nodes](#simulation_nodes) array. For example:
+
+```js
+var nodes = [
+ {"id": "Alice"},
+ {"id": "Bob"},
+ {"id": "Carol"}
+];
+
+var links = [
+ {"source": 0, "target": 1}, // Alice → Bob
+ {"source": 1, "target": 2} // Bob → Carol
+];
+```
+
+Now consider a different id accessor that returns a string:
+
+```js
+function id(d) {
+ return d.id;
+}
+```
+
+With this accessor, you can use named sources and targets:
+
+```js
+var nodes = [
+ {"id": "Alice"},
+ {"id": "Bob"},
+ {"id": "Carol"}
+];
+
+var links = [
+ {"source": "Alice", "target": "Bob"},
+ {"source": "Bob", "target": "Carol"}
+];
+```
+
+This is particularly useful when representing graphs in JSON, as JSON does not allow references. See [this example](https://bl.ocks.org/mbostock/f584aa36df54c451c94a9d0798caed35).
+
+The id accessor is invoked for each node whenever the force is initialized, as when the [nodes](#simulation_nodes) or [links](#link_links) change, being passed the node and its zero-based index.
+
+# link .distance ([distance ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+If *distance* is specified, sets the distance accessor to the specified number or function, re-evaluates the distance accessor for each link, and returns this force. If *distance* is not specified, returns the current distance accessor, which defaults to:
+
+```js
+function distance() {
+ return 30;
+}
+```
+
+The distance accessor is invoked for each [link](#link_links), being passed the *link* and its zero-based *index*. The resulting number is then stored internally, such that the distance of each link is only recomputed when the force is initialized or when this method is called with a new *distance*, and not on every application of the force.
+
+# link .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+If *strength* is specified, sets the strength accessor to the specified number or function, re-evaluates the strength accessor for each link, and returns this force. If *strength* is not specified, returns the current strength accessor, which defaults to:
+
+```js
+function strength(link) {
+ return 1 / Math.min(count(link.source), count(link.target));
+}
+```
+
+Where *count*(*node*) is a function that returns the number of links with the given node as a source or target. This default was chosen because it automatically reduces the strength of links connected to heavily-connected nodes, improving stability.
+
+The strength accessor is invoked for each [link](#link_links), being passed the *link* and its zero-based *index*. The resulting number is then stored internally, such that the strength of each link is only recomputed when the force is initialized or when this method is called with a new *strength*, and not on every application of the force.
+
+# link .iterations ([iterations ]) · [Source](https://github.com/d3/d3-force/blob/master/src/link.js)
+
+If *iterations* is specified, sets the number of iterations per application to the specified number and returns this force. If *iterations* is not specified, returns the current iteration count which defaults to 1. Increasing the number of iterations greatly increases the rigidity of the constraint and is useful for [complex structures such as lattices](https://observablehq.com/@d3/force-directed-lattice), but also increases the runtime cost to evaluate the force.
+
+#### Many-Body
+
+The many-body (or *n*-body) force applies mutually amongst all [nodes](#simulation_nodes). It can be used to simulate gravity (attraction) if the [strength](#manyBody_strength) is positive, or electrostatic charge (repulsion) if the strength is negative. This implementation uses quadtrees and the [Barnes–Hut approximation](https://en.wikipedia.org/wiki/Barnes–Hut_simulation) to greatly improve performance; the accuracy can be customized using the [theta](#manyBody_theta) parameter.
+
+Unlike links, which only affect two linked nodes, the charge force is global: every node affects every other node, even if they are on disconnected subgraphs.
+
+# d3.forceManyBody () · [Source](https://github.com/d3/d3-force/blob/master/src/manyBody.js)
+
+Creates a new many-body force with the default parameters.
+
+# manyBody .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/manyBody.js)
+
+If *strength* is specified, sets the strength accessor to the specified number or function, re-evaluates the strength accessor for each node, and returns this force. A positive value causes nodes to attract each other, similar to gravity, while a negative value causes nodes to repel each other, similar to electrostatic charge. If *strength* is not specified, returns the current strength accessor, which defaults to:
+
+```js
+function strength() {
+ return -30;
+}
+```
+
+The strength accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the strength of each node is only recomputed when the force is initialized or when this method is called with a new *strength*, and not on every application of the force.
+
+# manyBody .theta ([theta ]) · [Source](https://github.com/d3/d3-force/blob/master/src/manyBody.js)
+
+If *theta* is specified, sets the Barnes–Hut approximation criterion to the specified number and returns this force. If *theta* is not specified, returns the current value, which defaults to 0.9.
+
+To accelerate computation, this force implements the [Barnes–Hut approximation](http://en.wikipedia.org/wiki/Barnes–Hut_simulation) which takes O(*n* log *n*) per application where *n* is the number of [nodes](#simulation_nodes). For each application, a [quadtree](https://github.com/d3/d3-quadtree) stores the current node positions; then for each node, the combined force of all other nodes on the given node is computed. For a cluster of nodes that is far away, the charge force can be approximated by treating the cluster as a single, larger node. The *theta* parameter determines the accuracy of the approximation: if the ratio *w* / *l* of the width *w* of the quadtree cell to the distance *l* from the node to the cell’s center of mass is less than *theta*, all nodes in the given cell are treated as a single node rather than individually.
+
+# manyBody .distanceMin ([distance ]) · [Source](https://github.com/d3/d3-force/blob/master/src/manyBody.js)
+
+If *distance* is specified, sets the minimum distance between nodes over which this force is considered. If *distance* is not specified, returns the current minimum distance, which defaults to 1. A minimum distance establishes an upper bound on the strength of the force between two nearby nodes, avoiding instability. In particular, it avoids an infinitely-strong force if two nodes are exactly coincident; in this case, the direction of the force is random.
+
+# manyBody .distanceMax ([distance ]) · [Source](https://github.com/d3/d3-force/blob/master/src/manyBody.js)
+
+If *distance* is specified, sets the maximum distance between nodes over which this force is considered. If *distance* is not specified, returns the current maximum distance, which defaults to infinity. Specifying a finite maximum distance improves performance and produces a more localized layout.
+
+#### Positioning
+
+The [*x*](#forceX)- and [*y*](#forceY)-positioning forces push nodes towards a desired position along the given dimension with a configurable strength. The [*radial*](#forceRadial) force is similar, except it pushes nodes towards the closest point on a given circle. The strength of the force is proportional to the one-dimensional distance between the node’s position and the target position. While these forces can be used to position individual nodes, they are intended primarily for global forces that apply to all (or most) nodes.
+
+# d3.forceX ([x ]) · [Source](https://github.com/d3/d3-force/blob/master/src/x.js)
+
+Creates a new positioning force along the *x*-axis towards the given position [*x*](#x_x). If *x* is not specified, it defaults to 0.
+
+# x .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/x.js)
+
+If *strength* is specified, sets the strength accessor to the specified number or function, re-evaluates the strength accessor for each node, and returns this force. The *strength* determines how much to increment the node’s *x*-velocity: ([*x*](#x_x) - *node*.x) × *strength*. For example, a value of 0.1 indicates that the node should move a tenth of the way from its current *x*-position to the target *x*-position with each application. Higher values moves nodes more quickly to the target position, often at the expense of other forces or constraints. A value outside the range [0,1] is not recommended.
+
+If *strength* is not specified, returns the current strength accessor, which defaults to:
+
+```js
+function strength() {
+ return 0.1;
+}
+```
+
+The strength accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the strength of each node is only recomputed when the force is initialized or when this method is called with a new *strength*, and not on every application of the force.
+
+# x .x ([x ]) · [Source](https://github.com/d3/d3-force/blob/master/src/x.js)
+
+If *x* is specified, sets the *x*-coordinate accessor to the specified number or function, re-evaluates the *x*-accessor for each node, and returns this force. If *x* is not specified, returns the current *x*-accessor, which defaults to:
+
+```js
+function x() {
+ return 0;
+}
+```
+
+The *x*-accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the target *x*-coordinate of each node is only recomputed when the force is initialized or when this method is called with a new *x*, and not on every application of the force.
+
+# d3.forceY ([y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/y.js)
+
+Creates a new positioning force along the *y*-axis towards the given position [*y*](#y_y). If *y* is not specified, it defaults to 0.
+
+# y .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/y.js)
+
+If *strength* is specified, sets the strength accessor to the specified number or function, re-evaluates the strength accessor for each node, and returns this force. The *strength* determines how much to increment the node’s *y*-velocity: ([*y*](#y_y) - *node*.y) × *strength*. For example, a value of 0.1 indicates that the node should move a tenth of the way from its current *y*-position to the target *y*-position with each application. Higher values moves nodes more quickly to the target position, often at the expense of other forces or constraints. A value outside the range [0,1] is not recommended.
+
+If *strength* is not specified, returns the current strength accessor, which defaults to:
+
+```js
+function strength() {
+ return 0.1;
+}
+```
+
+The strength accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the strength of each node is only recomputed when the force is initialized or when this method is called with a new *strength*, and not on every application of the force.
+
+# y .y ([y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/y.js)
+
+If *y* is specified, sets the *y*-coordinate accessor to the specified number or function, re-evaluates the *y*-accessor for each node, and returns this force. If *y* is not specified, returns the current *y*-accessor, which defaults to:
+
+```js
+function y() {
+ return 0;
+}
+```
+
+The *y*-accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the target *y*-coordinate of each node is only recomputed when the force is initialized or when this method is called with a new *y*, and not on every application of the force.
+
+# d3.forceRadial (radius [, x ][, y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/radial.js)
+
+[# radial .strength ([strength ]) · [Source](https://github.com/d3/d3-force/blob/master/src/radial.js)
+
+If *strength* is specified, sets the strength accessor to the specified number or function, re-evaluates the strength accessor for each node, and returns this force. The *strength* determines how much to increment the node’s *x*- and *y*-velocity. For example, a value of 0.1 indicates that the node should move a tenth of the way from its current position to the closest point on the circle with each application. Higher values moves nodes more quickly to the target position, often at the expense of other forces or constraints. A value outside the range [0,1] is not recommended.
+
+If *strength* is not specified, returns the current strength accessor, which defaults to:
+
+```js
+function strength() {
+ return 0.1;
+}
+```
+
+The strength accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the strength of each node is only recomputed when the force is initialized or when this method is called with a new *strength*, and not on every application of the force.
+
+# radial .radius ([radius ]) · [Source](https://github.com/d3/d3-force/blob/master/src/radial.js)
+
+If *radius* is specified, sets the circle *radius* to the specified number or function, re-evaluates the *radius* accessor for each node, and returns this force. If *radius* is not specified, returns the current *radius* accessor.
+
+The *radius* accessor is invoked for each [node](#simulation_nodes) in the simulation, being passed the *node* and its zero-based *index*. The resulting number is then stored internally, such that the target radius of each node is only recomputed when the force is initialized or when this method is called with a new *radius*, and not on every application of the force.
+
+# radial .x ([x ]) · [Source](https://github.com/d3/d3-force/blob/master/src/radial.js)
+
+If *x* is specified, sets the *x*-coordinate of the circle center to the specified number and returns this force. If *x* is not specified, returns the current *x*-coordinate of the center, which defaults to zero.
+
+# radial .y ([y ]) · [Source](https://github.com/d3/d3-force/blob/master/src/radial.js)
+
+If *y* is specified, sets the *y*-coordinate of the circle center to the specified number and returns this force. If *y* is not specified, returns the current *y*-coordinate of the center, which defaults to zero.
diff --git a/node_modules/d3-force/dist/d3-force.js b/node_modules/d3-force/dist/d3-force.js
new file mode 100644
index 00000000..71976dc5
--- /dev/null
+++ b/node_modules/d3-force/dist/d3-force.js
@@ -0,0 +1,693 @@
+// https://d3js.org/d3-force/ v3.0.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-quadtree'), require('d3-dispatch'), require('d3-timer')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-quadtree', 'd3-dispatch', 'd3-timer'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3, global.d3, global.d3));
+}(this, (function (exports, d3Quadtree, d3Dispatch, d3Timer) { 'use strict';
+
+function center(x, y) {
+ var nodes, strength = 1;
+
+ if (x == null) x = 0;
+ if (y == null) y = 0;
+
+ function force() {
+ var i,
+ n = nodes.length,
+ node,
+ sx = 0,
+ sy = 0;
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i], sx += node.x, sy += node.y;
+ }
+
+ for (sx = (sx / n - x) * strength, sy = (sy / n - y) * strength, i = 0; i < n; ++i) {
+ node = nodes[i], node.x -= sx, node.y -= sy;
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = +_, force) : x;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = +_, force) : y;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = +_, force) : strength;
+ };
+
+ return force;
+}
+
+function constant(x) {
+ return function() {
+ return x;
+ };
+}
+
+function jiggle(random) {
+ return (random() - 0.5) * 1e-6;
+}
+
+function x$2(d) {
+ return d.x + d.vx;
+}
+
+function y$2(d) {
+ return d.y + d.vy;
+}
+
+function collide(radius) {
+ var nodes,
+ radii,
+ random,
+ strength = 1,
+ iterations = 1;
+
+ if (typeof radius !== "function") radius = constant(radius == null ? 1 : +radius);
+
+ function force() {
+ var i, n = nodes.length,
+ tree,
+ node,
+ xi,
+ yi,
+ ri,
+ ri2;
+
+ for (var k = 0; k < iterations; ++k) {
+ tree = d3Quadtree.quadtree(nodes, x$2, y$2).visitAfter(prepare);
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ ri = radii[node.index], ri2 = ri * ri;
+ xi = node.x + node.vx;
+ yi = node.y + node.vy;
+ tree.visit(apply);
+ }
+ }
+
+ function apply(quad, x0, y0, x1, y1) {
+ var data = quad.data, rj = quad.r, r = ri + rj;
+ if (data) {
+ if (data.index > node.index) {
+ var x = xi - data.x - data.vx,
+ y = yi - data.y - data.vy,
+ l = x * x + y * y;
+ if (l < r * r) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ l = (r - (l = Math.sqrt(l))) / l * strength;
+ node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj));
+ node.vy += (y *= l) * r;
+ data.vx -= x * (r = 1 - r);
+ data.vy -= y * r;
+ }
+ }
+ return;
+ }
+ return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r;
+ }
+ }
+
+ function prepare(quad) {
+ if (quad.data) return quad.r = radii[quad.data.index];
+ for (var i = quad.r = 0; i < 4; ++i) {
+ if (quad[i] && quad[i].r > quad.r) {
+ quad.r = quad[i].r;
+ }
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length, node;
+ radii = new Array(n);
+ for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes);
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.iterations = function(_) {
+ return arguments.length ? (iterations = +_, force) : iterations;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = +_, force) : strength;
+ };
+
+ force.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), initialize(), force) : radius;
+ };
+
+ return force;
+}
+
+function index(d) {
+ return d.index;
+}
+
+function find(nodeById, nodeId) {
+ var node = nodeById.get(nodeId);
+ if (!node) throw new Error("node not found: " + nodeId);
+ return node;
+}
+
+function link(links) {
+ var id = index,
+ strength = defaultStrength,
+ strengths,
+ distance = constant(30),
+ distances,
+ nodes,
+ count,
+ bias,
+ random,
+ iterations = 1;
+
+ if (links == null) links = [];
+
+ function defaultStrength(link) {
+ return 1 / Math.min(count[link.source.index], count[link.target.index]);
+ }
+
+ function force(alpha) {
+ for (var k = 0, n = links.length; k < iterations; ++k) {
+ for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) {
+ link = links[i], source = link.source, target = link.target;
+ x = target.x + target.vx - source.x - source.vx || jiggle(random);
+ y = target.y + target.vy - source.y - source.vy || jiggle(random);
+ l = Math.sqrt(x * x + y * y);
+ l = (l - distances[i]) / l * alpha * strengths[i];
+ x *= l, y *= l;
+ target.vx -= x * (b = bias[i]);
+ target.vy -= y * b;
+ source.vx += x * (b = 1 - b);
+ source.vy += y * b;
+ }
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+
+ var i,
+ n = nodes.length,
+ m = links.length,
+ nodeById = new Map(nodes.map((d, i) => [id(d, i, nodes), d])),
+ link;
+
+ for (i = 0, count = new Array(n); i < m; ++i) {
+ link = links[i], link.index = i;
+ if (typeof link.source !== "object") link.source = find(nodeById, link.source);
+ if (typeof link.target !== "object") link.target = find(nodeById, link.target);
+ count[link.source.index] = (count[link.source.index] || 0) + 1;
+ count[link.target.index] = (count[link.target.index] || 0) + 1;
+ }
+
+ for (i = 0, bias = new Array(m); i < m; ++i) {
+ link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]);
+ }
+
+ strengths = new Array(m), initializeStrength();
+ distances = new Array(m), initializeDistance();
+ }
+
+ function initializeStrength() {
+ if (!nodes) return;
+
+ for (var i = 0, n = links.length; i < n; ++i) {
+ strengths[i] = +strength(links[i], i, links);
+ }
+ }
+
+ function initializeDistance() {
+ if (!nodes) return;
+
+ for (var i = 0, n = links.length; i < n; ++i) {
+ distances[i] = +distance(links[i], i, links);
+ }
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.links = function(_) {
+ return arguments.length ? (links = _, initialize(), force) : links;
+ };
+
+ force.id = function(_) {
+ return arguments.length ? (id = _, force) : id;
+ };
+
+ force.iterations = function(_) {
+ return arguments.length ? (iterations = +_, force) : iterations;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initializeStrength(), force) : strength;
+ };
+
+ force.distance = function(_) {
+ return arguments.length ? (distance = typeof _ === "function" ? _ : constant(+_), initializeDistance(), force) : distance;
+ };
+
+ return force;
+}
+
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const a = 1664525;
+const c = 1013904223;
+const m = 4294967296; // 2^32
+
+function lcg() {
+ let s = 1;
+ return () => (s = (a * s + c) % m) / m;
+}
+
+function x$1(d) {
+ return d.x;
+}
+
+function y$1(d) {
+ return d.y;
+}
+
+var initialRadius = 10,
+ initialAngle = Math.PI * (3 - Math.sqrt(5));
+
+function simulation(nodes) {
+ var simulation,
+ alpha = 1,
+ alphaMin = 0.001,
+ alphaDecay = 1 - Math.pow(alphaMin, 1 / 300),
+ alphaTarget = 0,
+ velocityDecay = 0.6,
+ forces = new Map(),
+ stepper = d3Timer.timer(step),
+ event = d3Dispatch.dispatch("tick", "end"),
+ random = lcg();
+
+ if (nodes == null) nodes = [];
+
+ function step() {
+ tick();
+ event.call("tick", simulation);
+ if (alpha < alphaMin) {
+ stepper.stop();
+ event.call("end", simulation);
+ }
+ }
+
+ function tick(iterations) {
+ var i, n = nodes.length, node;
+
+ if (iterations === undefined) iterations = 1;
+
+ for (var k = 0; k < iterations; ++k) {
+ alpha += (alphaTarget - alpha) * alphaDecay;
+
+ forces.forEach(function(force) {
+ force(alpha);
+ });
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ if (node.fx == null) node.x += node.vx *= velocityDecay;
+ else node.x = node.fx, node.vx = 0;
+ if (node.fy == null) node.y += node.vy *= velocityDecay;
+ else node.y = node.fy, node.vy = 0;
+ }
+ }
+
+ return simulation;
+ }
+
+ function initializeNodes() {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.index = i;
+ if (node.fx != null) node.x = node.fx;
+ if (node.fy != null) node.y = node.fy;
+ if (isNaN(node.x) || isNaN(node.y)) {
+ var radius = initialRadius * Math.sqrt(0.5 + i), angle = i * initialAngle;
+ node.x = radius * Math.cos(angle);
+ node.y = radius * Math.sin(angle);
+ }
+ if (isNaN(node.vx) || isNaN(node.vy)) {
+ node.vx = node.vy = 0;
+ }
+ }
+ }
+
+ function initializeForce(force) {
+ if (force.initialize) force.initialize(nodes, random);
+ return force;
+ }
+
+ initializeNodes();
+
+ return simulation = {
+ tick: tick,
+
+ restart: function() {
+ return stepper.restart(step), simulation;
+ },
+
+ stop: function() {
+ return stepper.stop(), simulation;
+ },
+
+ nodes: function(_) {
+ return arguments.length ? (nodes = _, initializeNodes(), forces.forEach(initializeForce), simulation) : nodes;
+ },
+
+ alpha: function(_) {
+ return arguments.length ? (alpha = +_, simulation) : alpha;
+ },
+
+ alphaMin: function(_) {
+ return arguments.length ? (alphaMin = +_, simulation) : alphaMin;
+ },
+
+ alphaDecay: function(_) {
+ return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay;
+ },
+
+ alphaTarget: function(_) {
+ return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget;
+ },
+
+ velocityDecay: function(_) {
+ return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay;
+ },
+
+ randomSource: function(_) {
+ return arguments.length ? (random = _, forces.forEach(initializeForce), simulation) : random;
+ },
+
+ force: function(name, _) {
+ return arguments.length > 1 ? ((_ == null ? forces.delete(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name);
+ },
+
+ find: function(x, y, radius) {
+ var i = 0,
+ n = nodes.length,
+ dx,
+ dy,
+ d2,
+ node,
+ closest;
+
+ if (radius == null) radius = Infinity;
+ else radius *= radius;
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ dx = x - node.x;
+ dy = y - node.y;
+ d2 = dx * dx + dy * dy;
+ if (d2 < radius) closest = node, radius = d2;
+ }
+
+ return closest;
+ },
+
+ on: function(name, _) {
+ return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name);
+ }
+ };
+}
+
+function manyBody() {
+ var nodes,
+ node,
+ random,
+ alpha,
+ strength = constant(-30),
+ strengths,
+ distanceMin2 = 1,
+ distanceMax2 = Infinity,
+ theta2 = 0.81;
+
+ function force(_) {
+ var i, n = nodes.length, tree = d3Quadtree.quadtree(nodes, x$1, y$1).visitAfter(accumulate);
+ for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply);
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length, node;
+ strengths = new Array(n);
+ for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes);
+ }
+
+ function accumulate(quad) {
+ var strength = 0, q, c, weight = 0, x, y, i;
+
+ // For internal nodes, accumulate forces from child quadrants.
+ if (quad.length) {
+ for (x = y = i = 0; i < 4; ++i) {
+ if ((q = quad[i]) && (c = Math.abs(q.value))) {
+ strength += q.value, weight += c, x += c * q.x, y += c * q.y;
+ }
+ }
+ quad.x = x / weight;
+ quad.y = y / weight;
+ }
+
+ // For leaf nodes, accumulate forces from coincident quadrants.
+ else {
+ q = quad;
+ q.x = q.data.x;
+ q.y = q.data.y;
+ do strength += strengths[q.data.index];
+ while (q = q.next);
+ }
+
+ quad.value = strength;
+ }
+
+ function apply(quad, x1, _, x2) {
+ if (!quad.value) return true;
+
+ var x = quad.x - node.x,
+ y = quad.y - node.y,
+ w = x2 - x1,
+ l = x * x + y * y;
+
+ // Apply the Barnes-Hut approximation if possible.
+ // Limit forces for very close nodes; randomize direction if coincident.
+ if (w * w / theta2 < l) {
+ if (l < distanceMax2) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+ node.vx += x * quad.value * alpha / l;
+ node.vy += y * quad.value * alpha / l;
+ }
+ return true;
+ }
+
+ // Otherwise, process points directly.
+ else if (quad.length || l >= distanceMax2) return;
+
+ // Limit forces for very close nodes; randomize direction if coincident.
+ if (quad.data !== node || quad.next) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+ }
+
+ do if (quad.data !== node) {
+ w = strengths[quad.data.index] * alpha / l;
+ node.vx += x * w;
+ node.vy += y * w;
+ } while (quad = quad.next);
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.distanceMin = function(_) {
+ return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2);
+ };
+
+ force.distanceMax = function(_) {
+ return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2);
+ };
+
+ force.theta = function(_) {
+ return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2);
+ };
+
+ return force;
+}
+
+function radial(radius, x, y) {
+ var nodes,
+ strength = constant(0.1),
+ strengths,
+ radiuses;
+
+ if (typeof radius !== "function") radius = constant(+radius);
+ if (x == null) x = 0;
+ if (y == null) y = 0;
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length; i < n; ++i) {
+ var node = nodes[i],
+ dx = node.x - x || 1e-6,
+ dy = node.y - y || 1e-6,
+ r = Math.sqrt(dx * dx + dy * dy),
+ k = (radiuses[i] - r) * strengths[i] * alpha / r;
+ node.vx += dx * k;
+ node.vy += dy * k;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ radiuses = new Array(n);
+ for (i = 0; i < n; ++i) {
+ radiuses[i] = +radius(nodes[i], i, nodes);
+ strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _, initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), initialize(), force) : radius;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = +_, force) : x;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = +_, force) : y;
+ };
+
+ return force;
+}
+
+function x(x) {
+ var strength = constant(0.1),
+ nodes,
+ strengths,
+ xz;
+
+ if (typeof x !== "function") x = constant(x == null ? 0 : +x);
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ xz = new Array(n);
+ for (i = 0; i < n; ++i) {
+ strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), initialize(), force) : x;
+ };
+
+ return force;
+}
+
+function y(y) {
+ var strength = constant(0.1),
+ nodes,
+ strengths,
+ yz;
+
+ if (typeof y !== "function") y = constant(y == null ? 0 : +y);
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ yz = new Array(n);
+ for (i = 0; i < n; ++i) {
+ strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), initialize(), force) : y;
+ };
+
+ return force;
+}
+
+exports.forceCenter = center;
+exports.forceCollide = collide;
+exports.forceLink = link;
+exports.forceManyBody = manyBody;
+exports.forceRadial = radial;
+exports.forceSimulation = simulation;
+exports.forceX = x;
+exports.forceY = y;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-force/dist/d3-force.min.js b/node_modules/d3-force/dist/d3-force.min.js
new file mode 100644
index 00000000..09ab9fb8
--- /dev/null
+++ b/node_modules/d3-force/dist/d3-force.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-force/ v3.0.0 Copyright 2010-2021 Mike Bostock
+!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-quadtree"),require("d3-dispatch"),require("d3-timer")):"function"==typeof define&&define.amd?define(["exports","d3-quadtree","d3-dispatch","d3-timer"],t):t((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{},n.d3,n.d3,n.d3)}(this,(function(n,t,e,r){"use strict";function i(n){return function(){return n}}function u(n){return 1e-6*(n()-.5)}function o(n){return n.x+n.vx}function f(n){return n.y+n.vy}function a(n){return n.index}function c(n,t){var e=n.get(t);if(!e)throw new Error("node not found: "+t);return e}const l=4294967296;function h(n){return n.x}function v(n){return n.y}var y=Math.PI*(3-Math.sqrt(5));n.forceCenter=function(n,t){var e,r=1;function i(){var i,u,o=e.length,f=0,a=0;for(i=0;iy+l||rd+l||ih.index){var v=y-o.x-o.vx,s=d-o.y-o.vy,p=v*v+s*s;pn.r&&(n.r=n[t].r)}function y(){if(e){var t,i,u=e.length;for(r=new Array(u),t=0;t[h(n,t,r),n])));for(i=0,o=new Array(a);i=l)){(n.data!==e||n.next)&&(0===h&&(g+=(h=u(r))*h),0===v&&(g+=(v=u(r))*v),g(n=(1664525*n+1013904223)%l)/l}();function g(){x(),v.call("tick",t),i1?(null==e?c.delete(n):c.set(n,p(e)),t):c.get(n)},find:function(t,e,r){var i,u,o,f,a,c=0,l=n.length;for(null==r?r=1/0:r*=r,c=0;c1?(v.on(n,e),t):v.on(n)}}},n.forceX=function(n){var t,e,r,u=i(.1);function o(n){for(var i,u=0,o=t.length;u=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-force.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "src/**/*.js",
+ "dist/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-force/",
+ "jsdelivr": "dist/d3-force.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "layout",
+ "network",
+ "graph",
+ "force",
+ "verlet",
+ "infovis"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-force",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-force.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-force.min.js",
+ "version": "3.0.0"
+}
diff --git a/node_modules/d3-force/src/center.js b/node_modules/d3-force/src/center.js
new file mode 100644
index 00000000..280d3e41
--- /dev/null
+++ b/node_modules/d3-force/src/center.js
@@ -0,0 +1,40 @@
+export default function(x, y) {
+ var nodes, strength = 1;
+
+ if (x == null) x = 0;
+ if (y == null) y = 0;
+
+ function force() {
+ var i,
+ n = nodes.length,
+ node,
+ sx = 0,
+ sy = 0;
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i], sx += node.x, sy += node.y;
+ }
+
+ for (sx = (sx / n - x) * strength, sy = (sy / n - y) * strength, i = 0; i < n; ++i) {
+ node = nodes[i], node.x -= sx, node.y -= sy;
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = +_, force) : x;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = +_, force) : y;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = +_, force) : strength;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/collide.js b/node_modules/d3-force/src/collide.js
new file mode 100644
index 00000000..8ebd8d91
--- /dev/null
+++ b/node_modules/d3-force/src/collide.js
@@ -0,0 +1,100 @@
+import {quadtree} from "d3-quadtree";
+import constant from "./constant.js";
+import jiggle from "./jiggle.js";
+
+function x(d) {
+ return d.x + d.vx;
+}
+
+function y(d) {
+ return d.y + d.vy;
+}
+
+export default function(radius) {
+ var nodes,
+ radii,
+ random,
+ strength = 1,
+ iterations = 1;
+
+ if (typeof radius !== "function") radius = constant(radius == null ? 1 : +radius);
+
+ function force() {
+ var i, n = nodes.length,
+ tree,
+ node,
+ xi,
+ yi,
+ ri,
+ ri2;
+
+ for (var k = 0; k < iterations; ++k) {
+ tree = quadtree(nodes, x, y).visitAfter(prepare);
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ ri = radii[node.index], ri2 = ri * ri;
+ xi = node.x + node.vx;
+ yi = node.y + node.vy;
+ tree.visit(apply);
+ }
+ }
+
+ function apply(quad, x0, y0, x1, y1) {
+ var data = quad.data, rj = quad.r, r = ri + rj;
+ if (data) {
+ if (data.index > node.index) {
+ var x = xi - data.x - data.vx,
+ y = yi - data.y - data.vy,
+ l = x * x + y * y;
+ if (l < r * r) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ l = (r - (l = Math.sqrt(l))) / l * strength;
+ node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj));
+ node.vy += (y *= l) * r;
+ data.vx -= x * (r = 1 - r);
+ data.vy -= y * r;
+ }
+ }
+ return;
+ }
+ return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r;
+ }
+ }
+
+ function prepare(quad) {
+ if (quad.data) return quad.r = radii[quad.data.index];
+ for (var i = quad.r = 0; i < 4; ++i) {
+ if (quad[i] && quad[i].r > quad.r) {
+ quad.r = quad[i].r;
+ }
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length, node;
+ radii = new Array(n);
+ for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes);
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.iterations = function(_) {
+ return arguments.length ? (iterations = +_, force) : iterations;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = +_, force) : strength;
+ };
+
+ force.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), initialize(), force) : radius;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/constant.js b/node_modules/d3-force/src/constant.js
new file mode 100644
index 00000000..b7d42e71
--- /dev/null
+++ b/node_modules/d3-force/src/constant.js
@@ -0,0 +1,5 @@
+export default function(x) {
+ return function() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-force/src/index.js b/node_modules/d3-force/src/index.js
new file mode 100644
index 00000000..a76c1c49
--- /dev/null
+++ b/node_modules/d3-force/src/index.js
@@ -0,0 +1,8 @@
+export {default as forceCenter} from "./center.js";
+export {default as forceCollide} from "./collide.js";
+export {default as forceLink} from "./link.js";
+export {default as forceManyBody} from "./manyBody.js";
+export {default as forceRadial} from "./radial.js";
+export {default as forceSimulation} from "./simulation.js";
+export {default as forceX} from "./x.js";
+export {default as forceY} from "./y.js";
diff --git a/node_modules/d3-force/src/jiggle.js b/node_modules/d3-force/src/jiggle.js
new file mode 100644
index 00000000..00752b9f
--- /dev/null
+++ b/node_modules/d3-force/src/jiggle.js
@@ -0,0 +1,3 @@
+export default function(random) {
+ return (random() - 0.5) * 1e-6;
+}
diff --git a/node_modules/d3-force/src/lcg.js b/node_modules/d3-force/src/lcg.js
new file mode 100644
index 00000000..a13cf79e
--- /dev/null
+++ b/node_modules/d3-force/src/lcg.js
@@ -0,0 +1,9 @@
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const a = 1664525;
+const c = 1013904223;
+const m = 4294967296; // 2^32
+
+export default function() {
+ let s = 1;
+ return () => (s = (a * s + c) % m) / m;
+}
diff --git a/node_modules/d3-force/src/link.js b/node_modules/d3-force/src/link.js
new file mode 100644
index 00000000..df6afa69
--- /dev/null
+++ b/node_modules/d3-force/src/link.js
@@ -0,0 +1,117 @@
+import constant from "./constant.js";
+import jiggle from "./jiggle.js";
+
+function index(d) {
+ return d.index;
+}
+
+function find(nodeById, nodeId) {
+ var node = nodeById.get(nodeId);
+ if (!node) throw new Error("node not found: " + nodeId);
+ return node;
+}
+
+export default function(links) {
+ var id = index,
+ strength = defaultStrength,
+ strengths,
+ distance = constant(30),
+ distances,
+ nodes,
+ count,
+ bias,
+ random,
+ iterations = 1;
+
+ if (links == null) links = [];
+
+ function defaultStrength(link) {
+ return 1 / Math.min(count[link.source.index], count[link.target.index]);
+ }
+
+ function force(alpha) {
+ for (var k = 0, n = links.length; k < iterations; ++k) {
+ for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) {
+ link = links[i], source = link.source, target = link.target;
+ x = target.x + target.vx - source.x - source.vx || jiggle(random);
+ y = target.y + target.vy - source.y - source.vy || jiggle(random);
+ l = Math.sqrt(x * x + y * y);
+ l = (l - distances[i]) / l * alpha * strengths[i];
+ x *= l, y *= l;
+ target.vx -= x * (b = bias[i]);
+ target.vy -= y * b;
+ source.vx += x * (b = 1 - b);
+ source.vy += y * b;
+ }
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+
+ var i,
+ n = nodes.length,
+ m = links.length,
+ nodeById = new Map(nodes.map((d, i) => [id(d, i, nodes), d])),
+ link;
+
+ for (i = 0, count = new Array(n); i < m; ++i) {
+ link = links[i], link.index = i;
+ if (typeof link.source !== "object") link.source = find(nodeById, link.source);
+ if (typeof link.target !== "object") link.target = find(nodeById, link.target);
+ count[link.source.index] = (count[link.source.index] || 0) + 1;
+ count[link.target.index] = (count[link.target.index] || 0) + 1;
+ }
+
+ for (i = 0, bias = new Array(m); i < m; ++i) {
+ link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]);
+ }
+
+ strengths = new Array(m), initializeStrength();
+ distances = new Array(m), initializeDistance();
+ }
+
+ function initializeStrength() {
+ if (!nodes) return;
+
+ for (var i = 0, n = links.length; i < n; ++i) {
+ strengths[i] = +strength(links[i], i, links);
+ }
+ }
+
+ function initializeDistance() {
+ if (!nodes) return;
+
+ for (var i = 0, n = links.length; i < n; ++i) {
+ distances[i] = +distance(links[i], i, links);
+ }
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.links = function(_) {
+ return arguments.length ? (links = _, initialize(), force) : links;
+ };
+
+ force.id = function(_) {
+ return arguments.length ? (id = _, force) : id;
+ };
+
+ force.iterations = function(_) {
+ return arguments.length ? (iterations = +_, force) : iterations;
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initializeStrength(), force) : strength;
+ };
+
+ force.distance = function(_) {
+ return arguments.length ? (distance = typeof _ === "function" ? _ : constant(+_), initializeDistance(), force) : distance;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/manyBody.js b/node_modules/d3-force/src/manyBody.js
new file mode 100644
index 00000000..746a0d00
--- /dev/null
+++ b/node_modules/d3-force/src/manyBody.js
@@ -0,0 +1,116 @@
+import {quadtree} from "d3-quadtree";
+import constant from "./constant.js";
+import jiggle from "./jiggle.js";
+import {x, y} from "./simulation.js";
+
+export default function() {
+ var nodes,
+ node,
+ random,
+ alpha,
+ strength = constant(-30),
+ strengths,
+ distanceMin2 = 1,
+ distanceMax2 = Infinity,
+ theta2 = 0.81;
+
+ function force(_) {
+ var i, n = nodes.length, tree = quadtree(nodes, x, y).visitAfter(accumulate);
+ for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply);
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length, node;
+ strengths = new Array(n);
+ for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes);
+ }
+
+ function accumulate(quad) {
+ var strength = 0, q, c, weight = 0, x, y, i;
+
+ // For internal nodes, accumulate forces from child quadrants.
+ if (quad.length) {
+ for (x = y = i = 0; i < 4; ++i) {
+ if ((q = quad[i]) && (c = Math.abs(q.value))) {
+ strength += q.value, weight += c, x += c * q.x, y += c * q.y;
+ }
+ }
+ quad.x = x / weight;
+ quad.y = y / weight;
+ }
+
+ // For leaf nodes, accumulate forces from coincident quadrants.
+ else {
+ q = quad;
+ q.x = q.data.x;
+ q.y = q.data.y;
+ do strength += strengths[q.data.index];
+ while (q = q.next);
+ }
+
+ quad.value = strength;
+ }
+
+ function apply(quad, x1, _, x2) {
+ if (!quad.value) return true;
+
+ var x = quad.x - node.x,
+ y = quad.y - node.y,
+ w = x2 - x1,
+ l = x * x + y * y;
+
+ // Apply the Barnes-Hut approximation if possible.
+ // Limit forces for very close nodes; randomize direction if coincident.
+ if (w * w / theta2 < l) {
+ if (l < distanceMax2) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+ node.vx += x * quad.value * alpha / l;
+ node.vy += y * quad.value * alpha / l;
+ }
+ return true;
+ }
+
+ // Otherwise, process points directly.
+ else if (quad.length || l >= distanceMax2) return;
+
+ // Limit forces for very close nodes; randomize direction if coincident.
+ if (quad.data !== node || quad.next) {
+ if (x === 0) x = jiggle(random), l += x * x;
+ if (y === 0) y = jiggle(random), l += y * y;
+ if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l);
+ }
+
+ do if (quad.data !== node) {
+ w = strengths[quad.data.index] * alpha / l;
+ node.vx += x * w;
+ node.vy += y * w;
+ } while (quad = quad.next);
+ }
+
+ force.initialize = function(_nodes, _random) {
+ nodes = _nodes;
+ random = _random;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.distanceMin = function(_) {
+ return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2);
+ };
+
+ force.distanceMax = function(_) {
+ return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2);
+ };
+
+ force.theta = function(_) {
+ return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2);
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/radial.js b/node_modules/d3-force/src/radial.js
new file mode 100644
index 00000000..609516bf
--- /dev/null
+++ b/node_modules/d3-force/src/radial.js
@@ -0,0 +1,57 @@
+import constant from "./constant.js";
+
+export default function(radius, x, y) {
+ var nodes,
+ strength = constant(0.1),
+ strengths,
+ radiuses;
+
+ if (typeof radius !== "function") radius = constant(+radius);
+ if (x == null) x = 0;
+ if (y == null) y = 0;
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length; i < n; ++i) {
+ var node = nodes[i],
+ dx = node.x - x || 1e-6,
+ dy = node.y - y || 1e-6,
+ r = Math.sqrt(dx * dx + dy * dy),
+ k = (radiuses[i] - r) * strengths[i] * alpha / r;
+ node.vx += dx * k;
+ node.vy += dy * k;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ radiuses = new Array(n);
+ for (i = 0; i < n; ++i) {
+ radiuses[i] = +radius(nodes[i], i, nodes);
+ strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _, initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), initialize(), force) : radius;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = +_, force) : x;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = +_, force) : y;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/simulation.js b/node_modules/d3-force/src/simulation.js
new file mode 100644
index 00000000..7a1ff823
--- /dev/null
+++ b/node_modules/d3-force/src/simulation.js
@@ -0,0 +1,156 @@
+import {dispatch} from "d3-dispatch";
+import {timer} from "d3-timer";
+import lcg from "./lcg.js";
+
+export function x(d) {
+ return d.x;
+}
+
+export function y(d) {
+ return d.y;
+}
+
+var initialRadius = 10,
+ initialAngle = Math.PI * (3 - Math.sqrt(5));
+
+export default function(nodes) {
+ var simulation,
+ alpha = 1,
+ alphaMin = 0.001,
+ alphaDecay = 1 - Math.pow(alphaMin, 1 / 300),
+ alphaTarget = 0,
+ velocityDecay = 0.6,
+ forces = new Map(),
+ stepper = timer(step),
+ event = dispatch("tick", "end"),
+ random = lcg();
+
+ if (nodes == null) nodes = [];
+
+ function step() {
+ tick();
+ event.call("tick", simulation);
+ if (alpha < alphaMin) {
+ stepper.stop();
+ event.call("end", simulation);
+ }
+ }
+
+ function tick(iterations) {
+ var i, n = nodes.length, node;
+
+ if (iterations === undefined) iterations = 1;
+
+ for (var k = 0; k < iterations; ++k) {
+ alpha += (alphaTarget - alpha) * alphaDecay;
+
+ forces.forEach(function(force) {
+ force(alpha);
+ });
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ if (node.fx == null) node.x += node.vx *= velocityDecay;
+ else node.x = node.fx, node.vx = 0;
+ if (node.fy == null) node.y += node.vy *= velocityDecay;
+ else node.y = node.fy, node.vy = 0;
+ }
+ }
+
+ return simulation;
+ }
+
+ function initializeNodes() {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.index = i;
+ if (node.fx != null) node.x = node.fx;
+ if (node.fy != null) node.y = node.fy;
+ if (isNaN(node.x) || isNaN(node.y)) {
+ var radius = initialRadius * Math.sqrt(0.5 + i), angle = i * initialAngle;
+ node.x = radius * Math.cos(angle);
+ node.y = radius * Math.sin(angle);
+ }
+ if (isNaN(node.vx) || isNaN(node.vy)) {
+ node.vx = node.vy = 0;
+ }
+ }
+ }
+
+ function initializeForce(force) {
+ if (force.initialize) force.initialize(nodes, random);
+ return force;
+ }
+
+ initializeNodes();
+
+ return simulation = {
+ tick: tick,
+
+ restart: function() {
+ return stepper.restart(step), simulation;
+ },
+
+ stop: function() {
+ return stepper.stop(), simulation;
+ },
+
+ nodes: function(_) {
+ return arguments.length ? (nodes = _, initializeNodes(), forces.forEach(initializeForce), simulation) : nodes;
+ },
+
+ alpha: function(_) {
+ return arguments.length ? (alpha = +_, simulation) : alpha;
+ },
+
+ alphaMin: function(_) {
+ return arguments.length ? (alphaMin = +_, simulation) : alphaMin;
+ },
+
+ alphaDecay: function(_) {
+ return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay;
+ },
+
+ alphaTarget: function(_) {
+ return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget;
+ },
+
+ velocityDecay: function(_) {
+ return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay;
+ },
+
+ randomSource: function(_) {
+ return arguments.length ? (random = _, forces.forEach(initializeForce), simulation) : random;
+ },
+
+ force: function(name, _) {
+ return arguments.length > 1 ? ((_ == null ? forces.delete(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name);
+ },
+
+ find: function(x, y, radius) {
+ var i = 0,
+ n = nodes.length,
+ dx,
+ dy,
+ d2,
+ node,
+ closest;
+
+ if (radius == null) radius = Infinity;
+ else radius *= radius;
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ dx = x - node.x;
+ dy = y - node.y;
+ d2 = dx * dx + dy * dy;
+ if (d2 < radius) closest = node, radius = d2;
+ }
+
+ return closest;
+ },
+
+ on: function(name, _) {
+ return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name);
+ }
+ };
+}
diff --git a/node_modules/d3-force/src/x.js b/node_modules/d3-force/src/x.js
new file mode 100644
index 00000000..2e7a8219
--- /dev/null
+++ b/node_modules/d3-force/src/x.js
@@ -0,0 +1,41 @@
+import constant from "./constant.js";
+
+export default function(x) {
+ var strength = constant(0.1),
+ nodes,
+ strengths,
+ xz;
+
+ if (typeof x !== "function") x = constant(x == null ? 0 : +x);
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ xz = new Array(n);
+ for (i = 0; i < n; ++i) {
+ strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), initialize(), force) : x;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-force/src/y.js b/node_modules/d3-force/src/y.js
new file mode 100644
index 00000000..5fcde676
--- /dev/null
+++ b/node_modules/d3-force/src/y.js
@@ -0,0 +1,41 @@
+import constant from "./constant.js";
+
+export default function(y) {
+ var strength = constant(0.1),
+ nodes,
+ strengths,
+ yz;
+
+ if (typeof y !== "function") y = constant(y == null ? 0 : +y);
+
+ function force(alpha) {
+ for (var i = 0, n = nodes.length, node; i < n; ++i) {
+ node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha;
+ }
+ }
+
+ function initialize() {
+ if (!nodes) return;
+ var i, n = nodes.length;
+ strengths = new Array(n);
+ yz = new Array(n);
+ for (i = 0; i < n; ++i) {
+ strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes);
+ }
+ }
+
+ force.initialize = function(_) {
+ nodes = _;
+ initialize();
+ };
+
+ force.strength = function(_) {
+ return arguments.length ? (strength = typeof _ === "function" ? _ : constant(+_), initialize(), force) : strength;
+ };
+
+ force.y = function(_) {
+ return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), initialize(), force) : y;
+ };
+
+ return force;
+}
diff --git a/node_modules/d3-format/LICENSE b/node_modules/d3-format/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-format/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-format/README.md b/node_modules/d3-format/README.md
new file mode 100644
index 00000000..9c7e904f
--- /dev/null
+++ b/node_modules/d3-format/README.md
@@ -0,0 +1,350 @@
+# d3-format
+
+Ever noticed how sometimes JavaScript doesn’t display numbers the way you expect? Like, you tried to print tenths with a simple loop:
+
+```js
+for (let i = 0; i < 10; ++i) {
+ console.log(0.1 * i);
+}
+```
+
+And you got this:
+
+```js
+0
+0.1
+0.2
+0.30000000000000004
+0.4
+0.5
+0.6000000000000001
+0.7000000000000001
+0.8
+0.9
+```
+
+Welcome to [binary floating point](https://en.wikipedia.org/wiki/Double-precision_floating-point_format)! ಠ_ಠ
+
+Yet rounding error is not the only reason to customize number formatting. A table of numbers should be formatted consistently for comparison; above, 0.0 would be better than 0. Large numbers should have grouped digits (e.g., 42,000) or be in scientific or metric notation (4.2e+4, 42k). Currencies should have fixed precision ($3.50). Reported numerical results should be rounded to significant digits (4021 becomes 4000). Number formats should appropriate to the reader’s locale (42.000,00 or 42,000.00). The list goes on.
+
+Formatting numbers for human consumption is the purpose of d3-format, which is modeled after Python 3’s [format specification mini-language](https://docs.python.org/3/library/string.html#format-specification-mini-language) ([PEP 3101](https://www.python.org/dev/peps/pep-3101/)). Revisiting the example above:
+
+```js
+const f = d3.format(".1f");
+for (let i = 0; i < 10; ++i) {
+ console.log(f(0.1 * i));
+}
+```
+
+Now you get this:
+
+```js
+0.0
+0.1
+0.2
+0.3
+0.4
+0.5
+0.6
+0.7
+0.8
+0.9
+```
+
+But d3-format is much more than an alias for [number.toFixed](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed)! A few more examples:
+
+```js
+d3.format(".0%")(0.123); // rounded percentage, "12%"
+d3.format("($.2f")(-3.5); // localized fixed-point currency, "(£3.50)"
+d3.format("+20")(42); // space-filled and signed, " +42"
+d3.format(".^20")(42); // dot-filled and centered, ".........42........."
+d3.format(".2s")(42e6); // SI-prefix with two significant digits, "42M"
+d3.format("#x")(48879); // prefixed lowercase hexadecimal, "0xbeef"
+d3.format(",.2r")(4223); // grouped thousands with two significant digits, "4,200"
+```
+
+See [*locale*.format](#locale_format) for a detailed specification, and try running [d3.formatSpecifier](#formatSpecifier) on the above formats to decode their meaning.
+
+## Installing
+
+If you use npm, `npm install d3-format`. You can also download the [latest release on GitHub](https://github.com/d3/d3-format/releases/latest). In modern browsers, you can import d3-format from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-format’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+Locale files are published to npm and can be loaded using [d3.json](https://github.com/d3/d3-fetch/blob/master/README.md#json). For example, to set Russian as the default locale:
+
+```js
+const locale = await d3.json("https://cdn.jsdelivr.net/npm/d3-format@3/locale/ru-RU.json");
+d3.formatDefaultLocale(locale);
+const f = d3.format("$,");
+console.log(f(1234.56)); // 1 234,56 руб.
+```
+
+[Try d3-format in your browser.](https://observablehq.com/@d3/d3-format)
+
+## API Reference
+
+# d3.format (specifier ) [<>](https://github.com/d3/d3-format/blob/main/src/defaultLocale.js#L4 "Source")
+
+An alias for [*locale*.format](#locale_format) on the [default locale](#formatDefaultLocale).
+
+# d3.formatPrefix (specifier , value ) [<>](https://github.com/d3/d3-format/blob/main/src/defaultLocale.js#L5 "Source")
+
+An alias for [*locale*.formatPrefix](#locale_formatPrefix) on the [default locale](#formatDefaultLocale).
+
+# locale .format (specifier ) [<>](https://github.com/d3/d3-format/blob/main/src/locale.js#L18 "Source")
+
+Returns a new format function for the given string *specifier*. The returned function takes a number as the only argument, and returns a string representing the formatted number. The general form of a specifier is:
+
+```
+[[fill]align][sign][symbol][0][width][,][.precision][~][type]
+```
+
+The *fill* can be any character. The presence of a fill character is signaled by the *align* character following it, which must be one of the following:
+
+* `>` - Forces the field to be right-aligned within the available space. (Default behavior).
+* `<` - Forces the field to be left-aligned within the available space.
+* `^` - Forces the field to be centered within the available space.
+* `=` - like `>`, but with any sign and symbol to the left of any padding.
+
+The *sign* can be:
+
+* `-` - nothing for zero or positive and a minus sign for negative. (Default behavior.)
+* `+` - a plus sign for zero or positive and a minus sign for negative.
+* `(` - nothing for zero or positive and parentheses for negative.
+* ` ` (space) - a space for zero or positive and a minus sign for negative.
+
+The *symbol* can be:
+
+* `$` - apply currency symbols per the locale definition.
+* `#` - for binary, octal, or hexadecimal notation, prefix by `0b`, `0o`, or `0x`, respectively.
+
+The *zero* (`0`) option enables zero-padding; this implicitly sets *fill* to `0` and *align* to `=`. The *width* defines the minimum field width; if not specified, then the width will be determined by the content. The *comma* (`,`) option enables the use of a group separator, such as a comma for thousands.
+
+Depending on the *type*, the *precision* either indicates the number of digits that follow the decimal point (types `f` and `%`), or the number of significant digits (types ``, `e`, `g`, `r`, `s` and `p`). If the precision is not specified, it defaults to 6 for all types except `` (none), which defaults to 12. Precision is ignored for integer formats (types `b`, `o`, `d`, `x`, and `X`) and character data (type `c`). See [precisionFixed](#precisionFixed) and [precisionRound](#precisionRound) for help picking an appropriate precision.
+
+The `~` option trims insignificant trailing zeros across all format types. This is most commonly used in conjunction with types `r`, `e`, `s` and `%`. For example:
+
+```js
+d3.format("s")(1500); // "1.50000k"
+d3.format("~s")(1500); // "1.5k"
+```
+
+The available *type* values are:
+
+* `e` - exponent notation.
+* `f` - fixed point notation.
+* `g` - either decimal or exponent notation, rounded to significant digits.
+* `r` - decimal notation, rounded to significant digits.
+* `s` - decimal notation with an [SI prefix](#locale_formatPrefix), rounded to significant digits.
+* `%` - multiply by 100, and then decimal notation with a percent sign.
+* `p` - multiply by 100, round to significant digits, and then decimal notation with a percent sign.
+* `b` - binary notation, rounded to integer.
+* `o` - octal notation, rounded to integer.
+* `d` - decimal notation, rounded to integer.
+* `x` - hexadecimal notation, using lower-case letters, rounded to integer.
+* `X` - hexadecimal notation, using upper-case letters, rounded to integer.
+* `c` - character data, for a string of text.
+
+The type `` (none) is also supported as shorthand for `~g` (with a default precision of 12 instead of 6), and the type `n` is shorthand for `,g`. For the `g`, `n` and `` (none) types, decimal notation is used if the resulting string would have *precision* or fewer digits; otherwise, exponent notation is used. For example:
+
+```js
+d3.format(".2")(42); // "42"
+d3.format(".2")(4.2); // "4.2"
+d3.format(".1")(42); // "4e+1"
+d3.format(".1")(4.2); // "4"
+```
+
+# locale .formatPrefix (specifier , value ) [<>](https://github.com/d3/d3-format/blob/main/src/locale.js#L127 "Source")
+
+Equivalent to [*locale*.format](#locale_format), except the returned function will convert values to the units of the appropriate [SI prefix](https://en.wikipedia.org/wiki/Metric_prefix#List_of_SI_prefixes) for the specified numeric reference *value* before formatting in fixed point notation. The following prefixes are supported:
+
+* `y` - yocto, 10⁻²⁴
+* `z` - zepto, 10⁻²¹
+* `a` - atto, 10⁻¹⁸
+* `f` - femto, 10⁻¹⁵
+* `p` - pico, 10⁻¹²
+* `n` - nano, 10⁻⁹
+* `µ` - micro, 10⁻⁶
+* `m` - milli, 10⁻³
+* `` (none) - 10⁰
+* `k` - kilo, 10³
+* `M` - mega, 10⁶
+* `G` - giga, 10⁹
+* `T` - tera, 10¹²
+* `P` - peta, 10¹⁵
+* `E` - exa, 10¹⁸
+* `Z` - zetta, 10²¹
+* `Y` - yotta, 10²⁴
+
+Unlike [*locale*.format](#locale_format) with the `s` format type, this method returns a formatter with a consistent SI prefix, rather than computing the prefix dynamically for each number. In addition, the *precision* for the given *specifier* represents the number of digits past the decimal point (as with `f` fixed point notation), not the number of significant digits. For example:
+
+```js
+const f = d3.formatPrefix(",.0", 1e-6);
+f(0.00042); // "420µ"
+f(0.0042); // "4,200µ"
+```
+
+This method is useful when formatting multiple numbers in the same units for easy comparison. See [precisionPrefix](#precisionPrefix) for help picking an appropriate precision, and [bl.ocks.org/9764126](http://bl.ocks.org/mbostock/9764126) for an example.
+
+# d3.formatSpecifier (specifier ) [<>](https://github.com/d3/d3-format/blob/main/src/formatSpecifier.js "Source")
+
+Parses the specified *specifier*, returning an object with exposed fields that correspond to the [format specification mini-language](#locale_format) and a toString method that reconstructs the specifier. For example, `formatSpecifier("s")` returns:
+
+```js
+FormatSpecifier {
+ "fill": " ",
+ "align": ">",
+ "sign": "-",
+ "symbol": "",
+ "zero": false,
+ "width": undefined,
+ "comma": false,
+ "precision": undefined,
+ "trim": false,
+ "type": "s"
+}
+```
+
+This method is useful for understanding how format specifiers are parsed and for deriving new specifiers. For example, you might compute an appropriate precision based on the numbers you want to format using [precisionFixed](#precisionFixed) and then create a new format:
+
+```js
+const s = d3.formatSpecifier("f");
+s.precision = d3.precisionFixed(0.01);
+const f = d3.format(s);
+f(42); // "42.00";
+```
+
+# new d3.FormatSpecifier (specifier ) [<>](https://github.com/d3/d3-format/blob/main/src/formatSpecifier.js "Source")
+
+Given the specified *specifier* object, returning an object with exposed fields that correspond to the [format specification mini-language](#locale_format) and a toString method that reconstructs the specifier. For example, `new FormatSpecifier({type: "s"})` returns:
+
+```js
+FormatSpecifier {
+ "fill": " ",
+ "align": ">",
+ "sign": "-",
+ "symbol": "",
+ "zero": false,
+ "width": undefined,
+ "comma": false,
+ "precision": undefined,
+ "trim": false,
+ "type": "s"
+}
+```
+
+# d3.precisionFixed (step ) [<>](https://github.com/d3/d3-format/blob/main/src/precisionFixed.js "Source")
+
+Returns a suggested decimal precision for fixed point notation given the specified numeric *step* value. The *step* represents the minimum absolute difference between values that will be formatted. (This assumes that the values to be formatted are also multiples of *step*.) For example, given the numbers 1, 1.5, and 2, the *step* should be 0.5 and the suggested precision is 1:
+
+```js
+const p = d3.precisionFixed(0.5);
+const f = d3.format("." + p + "f");
+f(1); // "1.0"
+f(1.5); // "1.5"
+f(2); // "2.0"
+```
+
+Whereas for the numbers 1, 2 and 3, the *step* should be 1 and the suggested precision is 0:
+
+```js
+const p = d3.precisionFixed(1);
+const f = d3.format("." + p + "f");
+f(1); // "1"
+f(2); // "2"
+f(3); // "3"
+```
+
+Note: for the `%` format type, subtract two:
+
+```js
+const p = Math.max(0, d3.precisionFixed(0.05) - 2);
+const f = d3.format("." + p + "%");
+f(0.45); // "45%"
+f(0.50); // "50%"
+f(0.55); // "55%"
+```
+
+# d3.precisionPrefix (step , value ) [<>](https://github.com/d3/d3-format/blob/main/src/precisionPrefix.js "Source")
+
+Returns a suggested decimal precision for use with [*locale*.formatPrefix](#locale_formatPrefix) given the specified numeric *step* and reference *value*. The *step* represents the minimum absolute difference between values that will be formatted, and *value* determines which SI prefix will be used. (This assumes that the values to be formatted are also multiples of *step*.) For example, given the numbers 1.1e6, 1.2e6, and 1.3e6, the *step* should be 1e5, the *value* could be 1.3e6, and the suggested precision is 1:
+
+```js
+const p = d3.precisionPrefix(1e5, 1.3e6);
+const f = d3.formatPrefix("." + p, 1.3e6);
+f(1.1e6); // "1.1M"
+f(1.2e6); // "1.2M"
+f(1.3e6); // "1.3M"
+```
+
+# d3.precisionRound (step , max ) [<>](https://github.com/d3/d3-format/blob/main/src/precisionRound.js "Source")
+
+Returns a suggested decimal precision for format types that round to significant digits given the specified numeric *step* and *max* values. The *step* represents the minimum absolute difference between values that will be formatted, and the *max* represents the largest absolute value that will be formatted. (This assumes that the values to be formatted are also multiples of *step*.) For example, given the numbers 0.99, 1.0, and 1.01, the *step* should be 0.01, the *max* should be 1.01, and the suggested precision is 3:
+
+```js
+const p = d3.precisionRound(0.01, 1.01);
+const f = d3.format("." + p + "r");
+f(0.99); // "0.990"
+f(1.0); // "1.00"
+f(1.01); // "1.01"
+```
+
+Whereas for the numbers 0.9, 1.0, and 1.1, the *step* should be 0.1, the *max* should be 1.1, and the suggested precision is 2:
+
+```js
+const p = d3.precisionRound(0.1, 1.1);
+const f = d3.format("." + p + "r");
+f(0.9); // "0.90"
+f(1.0); // "1.0"
+f(1.1); // "1.1"
+```
+
+Note: for the `e` format type, subtract one:
+
+```js
+const p = Math.max(0, d3.precisionRound(0.01, 1.01) - 1);
+const f = d3.format("." + p + "e");
+f(0.01); // "1.00e-2"
+f(1.01); // "1.01e+0"
+```
+
+### Locales
+
+# d3.formatLocale (definition ) [<>](https://github.com/d3/d3-format/blob/main/src/locale.js "Source")
+
+Returns a *locale* object for the specified *definition* with [*locale*.format](#locale_format) and [*locale*.formatPrefix](#locale_formatPrefix) methods. The *definition* must include the following properties:
+
+* `decimal` - the decimal point (e.g., `"."`).
+* `thousands` - the group separator (e.g., `","`).
+* `grouping` - the array of group sizes (e.g., `[3]`), cycled as needed.
+* `currency` - the currency prefix and suffix (e.g., `["$", ""]`).
+* `numerals` - optional; an array of ten strings to replace the numerals 0-9.
+* `percent` - optional; the percent sign (defaults to `"%"`).
+* `minus` - optional; the minus sign (defaults to `"−"`).
+* `nan` - optional; the not-a-number value (defaults `"NaN"`).
+
+Note that the *thousands* property is a misnomer, as the grouping definition allows groups other than thousands.
+
+# d3.formatDefaultLocale (definition ) [<>](https://github.com/d3/d3-format/blob/main/src/defaultLocale.js "Source")
+
+Equivalent to [d3.formatLocale](#formatLocale), except it also redefines [d3.format](#format) and [d3.formatPrefix](#formatPrefix) to the new locale’s [*locale*.format](#locale_format) and [*locale*.formatPrefix](#locale_formatPrefix). If you do not set a default locale, it defaults to [U.S. English](https://github.com/d3/d3-format/blob/main/locale/en-US.json).
diff --git a/node_modules/d3-format/dist/d3-format.js b/node_modules/d3-format/dist/d3-format.js
new file mode 100644
index 00000000..97402359
--- /dev/null
+++ b/node_modules/d3-format/dist/d3-format.js
@@ -0,0 +1,345 @@
+// https://d3js.org/d3-format/ v3.1.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+})(this, (function (exports) { 'use strict';
+
+function formatDecimal(x) {
+ return Math.abs(x = Math.round(x)) >= 1e21
+ ? x.toLocaleString("en").replace(/,/g, "")
+ : x.toString(10);
+}
+
+// Computes the decimal coefficient and exponent of the specified number x with
+// significant digits p, where x is positive and p is in [1, 21] or undefined.
+// For example, formatDecimalParts(1.23) returns ["123", 0].
+function formatDecimalParts(x, p) {
+ if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity
+ var i, coefficient = x.slice(0, i);
+
+ // The string returned by toExponential either has the form \d\.\d+e[-+]\d+
+ // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
+ return [
+ coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,
+ +x.slice(i + 1)
+ ];
+}
+
+function exponent(x) {
+ return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN;
+}
+
+function formatGroup(grouping, thousands) {
+ return function(value, width) {
+ var i = value.length,
+ t = [],
+ j = 0,
+ g = grouping[0],
+ length = 0;
+
+ while (i > 0 && g > 0) {
+ if (length + g + 1 > width) g = Math.max(1, width - length);
+ t.push(value.substring(i -= g, i + g));
+ if ((length += g + 1) > width) break;
+ g = grouping[j = (j + 1) % grouping.length];
+ }
+
+ return t.reverse().join(thousands);
+ };
+}
+
+function formatNumerals(numerals) {
+ return function(value) {
+ return value.replace(/[0-9]/g, function(i) {
+ return numerals[+i];
+ });
+ };
+}
+
+// [[fill]align][sign][symbol][0][width][,][.precision][~][type]
+var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;
+
+function formatSpecifier(specifier) {
+ if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
+ var match;
+ return new FormatSpecifier({
+ fill: match[1],
+ align: match[2],
+ sign: match[3],
+ symbol: match[4],
+ zero: match[5],
+ width: match[6],
+ comma: match[7],
+ precision: match[8] && match[8].slice(1),
+ trim: match[9],
+ type: match[10]
+ });
+}
+
+formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof
+
+function FormatSpecifier(specifier) {
+ this.fill = specifier.fill === undefined ? " " : specifier.fill + "";
+ this.align = specifier.align === undefined ? ">" : specifier.align + "";
+ this.sign = specifier.sign === undefined ? "-" : specifier.sign + "";
+ this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + "";
+ this.zero = !!specifier.zero;
+ this.width = specifier.width === undefined ? undefined : +specifier.width;
+ this.comma = !!specifier.comma;
+ this.precision = specifier.precision === undefined ? undefined : +specifier.precision;
+ this.trim = !!specifier.trim;
+ this.type = specifier.type === undefined ? "" : specifier.type + "";
+}
+
+FormatSpecifier.prototype.toString = function() {
+ return this.fill
+ + this.align
+ + this.sign
+ + this.symbol
+ + (this.zero ? "0" : "")
+ + (this.width === undefined ? "" : Math.max(1, this.width | 0))
+ + (this.comma ? "," : "")
+ + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0))
+ + (this.trim ? "~" : "")
+ + this.type;
+};
+
+// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.
+function formatTrim(s) {
+ out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {
+ switch (s[i]) {
+ case ".": i0 = i1 = i; break;
+ case "0": if (i0 === 0) i0 = i; i1 = i; break;
+ default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break;
+ }
+ }
+ return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
+}
+
+var prefixExponent;
+
+function formatPrefixAuto(x, p) {
+ var d = formatDecimalParts(x, p);
+ if (!d) return x + "";
+ var coefficient = d[0],
+ exponent = d[1],
+ i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
+ n = coefficient.length;
+ return i === n ? coefficient
+ : i > n ? coefficient + new Array(i - n + 1).join("0")
+ : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i)
+ : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y!
+}
+
+function formatRounded(x, p) {
+ var d = formatDecimalParts(x, p);
+ if (!d) return x + "";
+ var coefficient = d[0],
+ exponent = d[1];
+ return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient
+ : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1)
+ : coefficient + new Array(exponent - coefficient.length + 2).join("0");
+}
+
+var formatTypes = {
+ "%": (x, p) => (x * 100).toFixed(p),
+ "b": (x) => Math.round(x).toString(2),
+ "c": (x) => x + "",
+ "d": formatDecimal,
+ "e": (x, p) => x.toExponential(p),
+ "f": (x, p) => x.toFixed(p),
+ "g": (x, p) => x.toPrecision(p),
+ "o": (x) => Math.round(x).toString(8),
+ "p": (x, p) => formatRounded(x * 100, p),
+ "r": formatRounded,
+ "s": formatPrefixAuto,
+ "X": (x) => Math.round(x).toString(16).toUpperCase(),
+ "x": (x) => Math.round(x).toString(16)
+};
+
+function identity(x) {
+ return x;
+}
+
+var map = Array.prototype.map,
+ prefixes = ["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"];
+
+function formatLocale(locale) {
+ var group = locale.grouping === undefined || locale.thousands === undefined ? identity : formatGroup(map.call(locale.grouping, Number), locale.thousands + ""),
+ currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
+ currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
+ decimal = locale.decimal === undefined ? "." : locale.decimal + "",
+ numerals = locale.numerals === undefined ? identity : formatNumerals(map.call(locale.numerals, String)),
+ percent = locale.percent === undefined ? "%" : locale.percent + "",
+ minus = locale.minus === undefined ? "−" : locale.minus + "",
+ nan = locale.nan === undefined ? "NaN" : locale.nan + "";
+
+ function newFormat(specifier) {
+ specifier = formatSpecifier(specifier);
+
+ var fill = specifier.fill,
+ align = specifier.align,
+ sign = specifier.sign,
+ symbol = specifier.symbol,
+ zero = specifier.zero,
+ width = specifier.width,
+ comma = specifier.comma,
+ precision = specifier.precision,
+ trim = specifier.trim,
+ type = specifier.type;
+
+ // The "n" type is an alias for ",g".
+ if (type === "n") comma = true, type = "g";
+
+ // The "" type, and any invalid type, is an alias for ".12~g".
+ else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g";
+
+ // If zero fill is specified, padding goes after sign and before digits.
+ if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "=";
+
+ // Compute the prefix and suffix.
+ // For SI-prefix, the suffix is lazily computed.
+ var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
+ suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : "";
+
+ // What format function should we use?
+ // Is this an integer type?
+ // Can this type generate exponential notation?
+ var formatType = formatTypes[type],
+ maybeSuffix = /[defgprs%]/.test(type);
+
+ // Set the default precision if not specified,
+ // or clamp the specified precision to the supported range.
+ // For significant precision, it must be in [1, 21].
+ // For fixed precision, it must be in [0, 20].
+ precision = precision === undefined ? 6
+ : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))
+ : Math.max(0, Math.min(20, precision));
+
+ function format(value) {
+ var valuePrefix = prefix,
+ valueSuffix = suffix,
+ i, n, c;
+
+ if (type === "c") {
+ valueSuffix = formatType(value) + valueSuffix;
+ value = "";
+ } else {
+ value = +value;
+
+ // Determine the sign. -0 is not less than 0, but 1 / -0 is!
+ var valueNegative = value < 0 || 1 / value < 0;
+
+ // Perform the initial formatting.
+ value = isNaN(value) ? nan : formatType(Math.abs(value), precision);
+
+ // Trim insignificant zeros.
+ if (trim) value = formatTrim(value);
+
+ // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.
+ if (valueNegative && +value === 0 && sign !== "+") valueNegative = false;
+
+ // Compute the prefix and suffix.
+ valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+ valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : "");
+
+ // Break the formatted value into the integer “value” part that can be
+ // grouped, and fractional or exponential “suffix” part that is not.
+ if (maybeSuffix) {
+ i = -1, n = value.length;
+ while (++i < n) {
+ if (c = value.charCodeAt(i), 48 > c || c > 57) {
+ valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
+ value = value.slice(0, i);
+ break;
+ }
+ }
+ }
+ }
+
+ // If the fill character is not "0", grouping is applied before padding.
+ if (comma && !zero) value = group(value, Infinity);
+
+ // Compute the padding.
+ var length = valuePrefix.length + value.length + valueSuffix.length,
+ padding = length < width ? new Array(width - length + 1).join(fill) : "";
+
+ // If the fill character is "0", grouping is applied after padding.
+ if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = "";
+
+ // Reconstruct the final output based on the desired alignment.
+ switch (align) {
+ case "<": value = valuePrefix + value + valueSuffix + padding; break;
+ case "=": value = valuePrefix + padding + value + valueSuffix; break;
+ case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break;
+ default: value = padding + valuePrefix + value + valueSuffix; break;
+ }
+
+ return numerals(value);
+ }
+
+ format.toString = function() {
+ return specifier + "";
+ };
+
+ return format;
+ }
+
+ function formatPrefix(specifier, value) {
+ var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
+ e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,
+ k = Math.pow(10, -e),
+ prefix = prefixes[8 + e / 3];
+ return function(value) {
+ return f(k * value) + prefix;
+ };
+ }
+
+ return {
+ format: newFormat,
+ formatPrefix: formatPrefix
+ };
+}
+
+var locale;
+exports.format = void 0;
+exports.formatPrefix = void 0;
+
+defaultLocale({
+ thousands: ",",
+ grouping: [3],
+ currency: ["$", ""]
+});
+
+function defaultLocale(definition) {
+ locale = formatLocale(definition);
+ exports.format = locale.format;
+ exports.formatPrefix = locale.formatPrefix;
+ return locale;
+}
+
+function precisionFixed(step) {
+ return Math.max(0, -exponent(Math.abs(step)));
+}
+
+function precisionPrefix(step, value) {
+ return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));
+}
+
+function precisionRound(step, max) {
+ step = Math.abs(step), max = Math.abs(max) - step;
+ return Math.max(0, exponent(max) - exponent(step)) + 1;
+}
+
+exports.FormatSpecifier = FormatSpecifier;
+exports.formatDefaultLocale = defaultLocale;
+exports.formatLocale = formatLocale;
+exports.formatSpecifier = formatSpecifier;
+exports.precisionFixed = precisionFixed;
+exports.precisionPrefix = precisionPrefix;
+exports.precisionRound = precisionRound;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/node_modules/d3-format/dist/d3-format.min.js b/node_modules/d3-format/dist/d3-format.min.js
new file mode 100644
index 00000000..192cea81
--- /dev/null
+++ b/node_modules/d3-format/dist/d3-format.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-format/ v3.1.0 Copyright 2010-2021 Mike Bostock
+!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";function i(t,i){if((r=(t=i?t.toExponential(i-1):t.toExponential()).indexOf("e"))<0)return null;var r,n=t.slice(0,r);return[n.length>1?n[0]+n.slice(2):n,+t.slice(r+1)]}function r(t){return(t=i(Math.abs(t)))?t[1]:NaN}var n,e=/^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;function o(t){if(!(i=e.exec(t)))throw new Error("invalid format: "+t);var i;return new a({fill:i[1],align:i[2],sign:i[3],symbol:i[4],zero:i[5],width:i[6],comma:i[7],precision:i[8]&&i[8].slice(1),trim:i[9],type:i[10]})}function a(t){this.fill=void 0===t.fill?" ":t.fill+"",this.align=void 0===t.align?">":t.align+"",this.sign=void 0===t.sign?"-":t.sign+"",this.symbol=void 0===t.symbol?"":t.symbol+"",this.zero=!!t.zero,this.width=void 0===t.width?void 0:+t.width,this.comma=!!t.comma,this.precision=void 0===t.precision?void 0:+t.precision,this.trim=!!t.trim,this.type=void 0===t.type?"":t.type+""}function s(t,r){var n=i(t,r);if(!n)return t+"";var e=n[0],o=n[1];return o<0?"0."+new Array(-o).join("0")+e:e.length>o+1?e.slice(0,o+1)+"."+e.slice(o+1):e+new Array(o-e.length+2).join("0")}o.prototype=a.prototype,a.prototype.toString=function(){return this.fill+this.align+this.sign+this.symbol+(this.zero?"0":"")+(void 0===this.width?"":Math.max(1,0|this.width))+(this.comma?",":"")+(void 0===this.precision?"":"."+Math.max(0,0|this.precision))+(this.trim?"~":"")+this.type};var c={"%":(t,i)=>(100*t).toFixed(i),b:t=>Math.round(t).toString(2),c:t=>t+"",d:function(t){return Math.abs(t=Math.round(t))>=1e21?t.toLocaleString("en").replace(/,/g,""):t.toString(10)},e:(t,i)=>t.toExponential(i),f:(t,i)=>t.toFixed(i),g:(t,i)=>t.toPrecision(i),o:t=>Math.round(t).toString(8),p:(t,i)=>s(100*t,i),r:s,s:function(t,r){var e=i(t,r);if(!e)return t+"";var o=e[0],a=e[1],s=a-(n=3*Math.max(-8,Math.min(8,Math.floor(a/3))))+1,c=o.length;return s===c?o:s>c?o+new Array(s-c+1).join("0"):s>0?o.slice(0,s)+"."+o.slice(s):"0."+new Array(1-s).join("0")+i(t,Math.max(0,r+s-1))[0]},X:t=>Math.round(t).toString(16).toUpperCase(),x:t=>Math.round(t).toString(16)};function h(t){return t}var l,u=Array.prototype.map,f=["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"];function d(t){var i,e,a=void 0===t.grouping||void 0===t.thousands?h:(i=u.call(t.grouping,Number),e=t.thousands+"",function(t,r){for(var n=t.length,o=[],a=0,s=i[0],c=0;n>0&&s>0&&(c+s+1>r&&(s=Math.max(1,r-c)),o.push(t.substring(n-=s,n+s)),!((c+=s+1)>r));)s=i[a=(a+1)%i.length];return o.reverse().join(e)}),s=void 0===t.currency?"":t.currency[0]+"",l=void 0===t.currency?"":t.currency[1]+"",d=void 0===t.decimal?".":t.decimal+"",m=void 0===t.numerals?h:function(t){return function(i){return i.replace(/[0-9]/g,(function(i){return t[+i]}))}}(u.call(t.numerals,String)),p=void 0===t.percent?"%":t.percent+"",g=void 0===t.minus?"−":t.minus+"",v=void 0===t.nan?"NaN":t.nan+"";function M(t){var i=(t=o(t)).fill,r=t.align,e=t.sign,h=t.symbol,u=t.zero,M=t.width,y=t.comma,x=t.precision,b=t.trim,w=t.type;"n"===w?(y=!0,w="g"):c[w]||(void 0===x&&(x=12),b=!0,w="g"),(u||"0"===i&&"="===r)&&(u=!0,i="0",r="=");var S="$"===h?s:"#"===h&&/[boxX]/.test(w)?"0"+w.toLowerCase():"",j="$"===h?l:/[%p]/.test(w)?p:"",k=c[w],P=/[defgprs%]/.test(w);function z(t){var o,s,c,h=S,l=j;if("c"===w)l=k(t)+l,t="";else{var p=(t=+t)<0||1/t<0;if(t=isNaN(t)?v:k(Math.abs(t),x),b&&(t=function(t){t:for(var i,r=t.length,n=1,e=-1;n0&&(e=0)}return e>0?t.slice(0,e)+t.slice(i+1):t}(t)),p&&0==+t&&"+"!==e&&(p=!1),h=(p?"("===e?e:g:"-"===e||"("===e?"":e)+h,l=("s"===w?f[8+n/3]:"")+l+(p&&"("===e?")":""),P)for(o=-1,s=t.length;++o(c=t.charCodeAt(o))||c>57){l=(46===c?d+t.slice(o+1):t.slice(o))+l,t=t.slice(0,o);break}}y&&!u&&(t=a(t,1/0));var z=h.length+t.length+l.length,A=z>1)+h+t+l+A.slice(z);break;default:t=A+h+t+l}return m(t)}return x=void 0===x?6:/[gprs]/.test(w)?Math.max(1,Math.min(21,x)):Math.max(0,Math.min(20,x)),z.toString=function(){return t+""},z}return{format:M,formatPrefix:function(t,i){var n=M(((t=o(t)).type="f",t)),e=3*Math.max(-8,Math.min(8,Math.floor(r(i)/3))),a=Math.pow(10,-e),s=f[8+e/3];return function(t){return n(a*t)+s}}}}function m(i){return l=d(i),t.format=l.format,t.formatPrefix=l.formatPrefix,l}t.format=void 0,t.formatPrefix=void 0,m({thousands:",",grouping:[3],currency:["$",""]}),t.FormatSpecifier=a,t.formatDefaultLocale=m,t.formatLocale=d,t.formatSpecifier=o,t.precisionFixed=function(t){return Math.max(0,-r(Math.abs(t)))},t.precisionPrefix=function(t,i){return Math.max(0,3*Math.max(-8,Math.min(8,Math.floor(r(i)/3)))-r(Math.abs(t)))},t.precisionRound=function(t,i){return t=Math.abs(t),i=Math.abs(i)-t,Math.max(0,r(i)-r(t))+1},Object.defineProperty(t,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-format/locale/ar-001.json b/node_modules/d3-format/locale/ar-001.json
new file mode 100644
index 00000000..0376eb9f
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-001.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-AE.json b/node_modules/d3-format/locale/ar-AE.json
new file mode 100644
index 00000000..a8273089
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-AE.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062f\u002e\u0625\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-BH.json b/node_modules/d3-format/locale/ar-BH.json
new file mode 100644
index 00000000..5f4e5dde
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-BH.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062f\u002e\u0628\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-DJ.json b/node_modules/d3-format/locale/ar-DJ.json
new file mode 100644
index 00000000..b893ff0c
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-DJ.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u200f\u0046\u0064\u006a ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-DZ.json b/node_modules/d3-format/locale/ar-DZ.json
new file mode 100644
index 00000000..e1438af1
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-DZ.json
@@ -0,0 +1,6 @@
+{
+ "decimal": "\u002c",
+ "thousands": "\u002e",
+ "grouping": [3],
+ "currency": ["\u062f\u002e\u062c\u002e ", ""]
+}
diff --git a/node_modules/d3-format/locale/ar-EG.json b/node_modules/d3-format/locale/ar-EG.json
new file mode 100644
index 00000000..2b1ff3aa
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-EG.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062c\u002e\u0645\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-EH.json b/node_modules/d3-format/locale/ar-EH.json
new file mode 100644
index 00000000..b33c32af
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-EH.json
@@ -0,0 +1,6 @@
+{
+ "decimal": "\u002e",
+ "thousands": "\u002c",
+ "grouping": [3],
+ "currency": ["\u062f\u002e\u0645\u002e ", ""]
+}
diff --git a/node_modules/d3-format/locale/ar-ER.json b/node_modules/d3-format/locale/ar-ER.json
new file mode 100644
index 00000000..b0f82bbe
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-ER.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u004e\u0066\u006b ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-IL.json b/node_modules/d3-format/locale/ar-IL.json
new file mode 100644
index 00000000..ce15fb47
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-IL.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u20aa ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-IQ.json b/node_modules/d3-format/locale/ar-IQ.json
new file mode 100644
index 00000000..a6c9b3fa
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-IQ.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062f\u002e\u0639\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-JO.json b/node_modules/d3-format/locale/ar-JO.json
new file mode 100644
index 00000000..94df180b
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-JO.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062f\u002e\u0623\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-KM.json b/node_modules/d3-format/locale/ar-KM.json
new file mode 100644
index 00000000..84dd81ad
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-KM.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0641\u002e\u062c\u002e\u0642\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-KW.json b/node_modules/d3-format/locale/ar-KW.json
new file mode 100644
index 00000000..b4018ab7
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-KW.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062f\u002e\u0643\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-LB.json b/node_modules/d3-format/locale/ar-LB.json
new file mode 100644
index 00000000..c732df33
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-LB.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0644\u002e\u0644\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-LY.json b/node_modules/d3-format/locale/ar-LY.json
new file mode 100644
index 00000000..431f230c
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-LY.json
@@ -0,0 +1,6 @@
+{
+ "decimal": "\u002c",
+ "thousands": "\u002e",
+ "grouping": [3],
+ "currency": ["\u062f\u002e\u0644\u002e ", ""]
+}
diff --git a/node_modules/d3-format/locale/ar-MA.json b/node_modules/d3-format/locale/ar-MA.json
new file mode 100644
index 00000000..abc0663b
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-MA.json
@@ -0,0 +1,6 @@
+{
+ "decimal": "\u002c",
+ "thousands": "\u002e",
+ "grouping": [3],
+ "currency": ["\u062f\u002e\u0645\u002e ", ""]
+}
diff --git a/node_modules/d3-format/locale/ar-MR.json b/node_modules/d3-format/locale/ar-MR.json
new file mode 100644
index 00000000..8d1f8c27
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-MR.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0623\u002e\u0645\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-OM.json b/node_modules/d3-format/locale/ar-OM.json
new file mode 100644
index 00000000..04ad53ad
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-OM.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0631\u002e\u0639\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-PS.json b/node_modules/d3-format/locale/ar-PS.json
new file mode 100644
index 00000000..ce15fb47
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-PS.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u20aa ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-QA.json b/node_modules/d3-format/locale/ar-QA.json
new file mode 100644
index 00000000..94aef298
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-QA.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0631\u002e\u0642\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-SA.json b/node_modules/d3-format/locale/ar-SA.json
new file mode 100644
index 00000000..4d64227e
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-SA.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0631\u002e\u0633\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-SD.json b/node_modules/d3-format/locale/ar-SD.json
new file mode 100644
index 00000000..1ae41ae8
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-SD.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u062c\u002e\u0633\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-SO.json b/node_modules/d3-format/locale/ar-SO.json
new file mode 100644
index 00000000..143b46f6
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-SO.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u200f\u0053 ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-SS.json b/node_modules/d3-format/locale/ar-SS.json
new file mode 100644
index 00000000..03ca5b4a
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-SS.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u00a3 ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-SY.json b/node_modules/d3-format/locale/ar-SY.json
new file mode 100644
index 00000000..40263fbb
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-SY.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0644\u002e\u0633\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-TD.json b/node_modules/d3-format/locale/ar-TD.json
new file mode 100644
index 00000000..7bc36467
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-TD.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["\u200f\u0046\u0043\u0046\u0041 ", ""],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ar-TN.json b/node_modules/d3-format/locale/ar-TN.json
new file mode 100644
index 00000000..16829aa5
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-TN.json
@@ -0,0 +1,6 @@
+{
+ "decimal": "\u002c",
+ "thousands": "\u002e",
+ "grouping": [3],
+ "currency": ["\u062f\u002e\u062a\u002e ", ""]
+}
diff --git a/node_modules/d3-format/locale/ar-YE.json b/node_modules/d3-format/locale/ar-YE.json
new file mode 100644
index 00000000..ed9f48e8
--- /dev/null
+++ b/node_modules/d3-format/locale/ar-YE.json
@@ -0,0 +1,7 @@
+{
+ "decimal": "\u066b",
+ "thousands": "\u066c",
+ "grouping": [3],
+ "currency": ["", " \u0631\u002e\u0649\u002e"],
+ "numerals" : ["\u0660", "\u0661", "\u0662", "\u0663", "\u0664", "\u0665", "\u0666", "\u0667", "\u0668", "\u0669"]
+}
diff --git a/node_modules/d3-format/locale/ca-ES.json b/node_modules/d3-format/locale/ca-ES.json
new file mode 100644
index 00000000..a2497624
--- /dev/null
+++ b/node_modules/d3-format/locale/ca-ES.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/cs-CZ.json b/node_modules/d3-format/locale/cs-CZ.json
new file mode 100644
index 00000000..7ff40eb9
--- /dev/null
+++ b/node_modules/d3-format/locale/cs-CZ.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0Kč"]
+}
diff --git a/node_modules/d3-format/locale/da-DK.json b/node_modules/d3-format/locale/da-DK.json
new file mode 100644
index 00000000..991a81c2
--- /dev/null
+++ b/node_modules/d3-format/locale/da-DK.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", " kr"]
+}
diff --git a/node_modules/d3-format/locale/de-CH.json b/node_modules/d3-format/locale/de-CH.json
new file mode 100644
index 00000000..874bb56a
--- /dev/null
+++ b/node_modules/d3-format/locale/de-CH.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "'",
+ "grouping": [3],
+ "currency": ["", "\u00a0CHF"]
+}
diff --git a/node_modules/d3-format/locale/de-DE.json b/node_modules/d3-format/locale/de-DE.json
new file mode 100644
index 00000000..a2497624
--- /dev/null
+++ b/node_modules/d3-format/locale/de-DE.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/en-CA.json b/node_modules/d3-format/locale/en-CA.json
new file mode 100644
index 00000000..f075b861
--- /dev/null
+++ b/node_modules/d3-format/locale/en-CA.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["$", ""]
+}
diff --git a/node_modules/d3-format/locale/en-GB.json b/node_modules/d3-format/locale/en-GB.json
new file mode 100644
index 00000000..3d22d7a6
--- /dev/null
+++ b/node_modules/d3-format/locale/en-GB.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["£", ""]
+}
diff --git a/node_modules/d3-format/locale/en-IE.json b/node_modules/d3-format/locale/en-IE.json
new file mode 100644
index 00000000..7d644154
--- /dev/null
+++ b/node_modules/d3-format/locale/en-IE.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["€", ""]
+}
diff --git a/node_modules/d3-format/locale/en-IN.json b/node_modules/d3-format/locale/en-IN.json
new file mode 100644
index 00000000..ada1510f
--- /dev/null
+++ b/node_modules/d3-format/locale/en-IN.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+ "currency": ["₹", ""]
+}
diff --git a/node_modules/d3-format/locale/en-US.json b/node_modules/d3-format/locale/en-US.json
new file mode 100644
index 00000000..f075b861
--- /dev/null
+++ b/node_modules/d3-format/locale/en-US.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["$", ""]
+}
diff --git a/node_modules/d3-format/locale/es-BO.json b/node_modules/d3-format/locale/es-BO.json
new file mode 100644
index 00000000..98fe6467
--- /dev/null
+++ b/node_modules/d3-format/locale/es-BO.json
@@ -0,0 +1,7 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["Bs\u00a0", ""],
+ "percent": "\u202f%"
+}
diff --git a/node_modules/d3-format/locale/es-ES.json b/node_modules/d3-format/locale/es-ES.json
new file mode 100644
index 00000000..a2497624
--- /dev/null
+++ b/node_modules/d3-format/locale/es-ES.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/es-MX.json b/node_modules/d3-format/locale/es-MX.json
new file mode 100644
index 00000000..f075b861
--- /dev/null
+++ b/node_modules/d3-format/locale/es-MX.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["$", ""]
+}
diff --git a/node_modules/d3-format/locale/fi-FI.json b/node_modules/d3-format/locale/fi-FI.json
new file mode 100644
index 00000000..e2218ec9
--- /dev/null
+++ b/node_modules/d3-format/locale/fi-FI.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/fr-CA.json b/node_modules/d3-format/locale/fr-CA.json
new file mode 100644
index 00000000..0d927b92
--- /dev/null
+++ b/node_modules/d3-format/locale/fr-CA.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "$"]
+}
diff --git a/node_modules/d3-format/locale/fr-FR.json b/node_modules/d3-format/locale/fr-FR.json
new file mode 100644
index 00000000..e0cf89de
--- /dev/null
+++ b/node_modules/d3-format/locale/fr-FR.json
@@ -0,0 +1,7 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"],
+ "percent": "\u202f%"
+}
diff --git a/node_modules/d3-format/locale/he-IL.json b/node_modules/d3-format/locale/he-IL.json
new file mode 100644
index 00000000..23926cb8
--- /dev/null
+++ b/node_modules/d3-format/locale/he-IL.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["₪", ""]
+}
diff --git a/node_modules/d3-format/locale/hu-HU.json b/node_modules/d3-format/locale/hu-HU.json
new file mode 100644
index 00000000..1baff743
--- /dev/null
+++ b/node_modules/d3-format/locale/hu-HU.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0Ft"]
+}
diff --git a/node_modules/d3-format/locale/it-IT.json b/node_modules/d3-format/locale/it-IT.json
new file mode 100644
index 00000000..564ed46e
--- /dev/null
+++ b/node_modules/d3-format/locale/it-IT.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["€", ""]
+}
diff --git a/node_modules/d3-format/locale/ja-JP.json b/node_modules/d3-format/locale/ja-JP.json
new file mode 100644
index 00000000..fdcba6c7
--- /dev/null
+++ b/node_modules/d3-format/locale/ja-JP.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["", "円"]
+}
diff --git a/node_modules/d3-format/locale/ko-KR.json b/node_modules/d3-format/locale/ko-KR.json
new file mode 100644
index 00000000..d1d882cd
--- /dev/null
+++ b/node_modules/d3-format/locale/ko-KR.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["₩", ""]
+}
diff --git a/node_modules/d3-format/locale/mk-MK.json b/node_modules/d3-format/locale/mk-MK.json
new file mode 100644
index 00000000..33528b8e
--- /dev/null
+++ b/node_modules/d3-format/locale/mk-MK.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "\u00a0ден."]
+}
diff --git a/node_modules/d3-format/locale/nl-NL.json b/node_modules/d3-format/locale/nl-NL.json
new file mode 100644
index 00000000..7176b373
--- /dev/null
+++ b/node_modules/d3-format/locale/nl-NL.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["€\u00a0", ""]
+}
diff --git a/node_modules/d3-format/locale/pl-PL.json b/node_modules/d3-format/locale/pl-PL.json
new file mode 100644
index 00000000..12c673fa
--- /dev/null
+++ b/node_modules/d3-format/locale/pl-PL.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "zł"]
+}
diff --git a/node_modules/d3-format/locale/pt-BR.json b/node_modules/d3-format/locale/pt-BR.json
new file mode 100644
index 00000000..e6705f1e
--- /dev/null
+++ b/node_modules/d3-format/locale/pt-BR.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["R$", ""]
+}
diff --git a/node_modules/d3-format/locale/pt-PT.json b/node_modules/d3-format/locale/pt-PT.json
new file mode 100644
index 00000000..e2218ec9
--- /dev/null
+++ b/node_modules/d3-format/locale/pt-PT.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/ru-RU.json b/node_modules/d3-format/locale/ru-RU.json
new file mode 100644
index 00000000..1babec35
--- /dev/null
+++ b/node_modules/d3-format/locale/ru-RU.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0\u20bd"]
+}
diff --git a/node_modules/d3-format/locale/sl-SI.json b/node_modules/d3-format/locale/sl-SI.json
new file mode 100644
index 00000000..a2497624
--- /dev/null
+++ b/node_modules/d3-format/locale/sl-SI.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": ".",
+ "grouping": [3],
+ "currency": ["", "\u00a0€"]
+}
diff --git a/node_modules/d3-format/locale/sv-SE.json b/node_modules/d3-format/locale/sv-SE.json
new file mode 100644
index 00000000..870eba32
--- /dev/null
+++ b/node_modules/d3-format/locale/sv-SE.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", " kr"]
+}
diff --git a/node_modules/d3-format/locale/uk-UA.json b/node_modules/d3-format/locale/uk-UA.json
new file mode 100644
index 00000000..75cee2d9
--- /dev/null
+++ b/node_modules/d3-format/locale/uk-UA.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ",",
+ "thousands": "\u00a0",
+ "grouping": [3],
+ "currency": ["", "\u00a0₴."]
+}
diff --git a/node_modules/d3-format/locale/zh-CN.json b/node_modules/d3-format/locale/zh-CN.json
new file mode 100644
index 00000000..1ffc7b68
--- /dev/null
+++ b/node_modules/d3-format/locale/zh-CN.json
@@ -0,0 +1,6 @@
+{
+ "decimal": ".",
+ "thousands": ",",
+ "grouping": [3],
+ "currency": ["¥", ""]
+}
diff --git a/node_modules/d3-format/package.json b/node_modules/d3-format/package.json
new file mode 100644
index 00000000..8baf720d
--- /dev/null
+++ b/node_modules/d3-format/package.json
@@ -0,0 +1,84 @@
+{
+ "_from": "d3-format@3",
+ "_id": "d3-format@3.1.0",
+ "_inBundle": false,
+ "_integrity": "sha512-YyUI6AEuY/Wpt8KWLgZHsIU86atmikuoOmCfommt0LYHiQSPjvX2AcFc38PX0CBpr2RCyZhjex+NS/LPOv6YqA==",
+ "_location": "/d3-format",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-format@3",
+ "name": "d3-format",
+ "escapedName": "d3-format",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-scale"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-format/-/d3-format-3.1.0.tgz",
+ "_shasum": "9260e23a28ea5cb109e93b21a06e24e2ebd55641",
+ "_spec": "d3-format@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-format/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Format numbers for human consumption.",
+ "devDependencies": {
+ "eslint": "8",
+ "mocha": "9",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ ".": {
+ "umd": "./dist/d3-format.min.js",
+ "default": "./src/index.js"
+ },
+ "./locale/*": "./locale/*.json"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js",
+ "locale/*.json"
+ ],
+ "homepage": "https://d3js.org/d3-format/",
+ "jsdelivr": "dist/d3-format.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "format",
+ "localization"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-format",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-format.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": [
+ "./src/defaultLocale.js"
+ ],
+ "type": "module",
+ "unpkg": "dist/d3-format.min.js",
+ "version": "3.1.0"
+}
diff --git a/node_modules/d3-format/src/defaultLocale.js b/node_modules/d3-format/src/defaultLocale.js
new file mode 100644
index 00000000..2fab0577
--- /dev/null
+++ b/node_modules/d3-format/src/defaultLocale.js
@@ -0,0 +1,18 @@
+import formatLocale from "./locale.js";
+
+var locale;
+export var format;
+export var formatPrefix;
+
+defaultLocale({
+ thousands: ",",
+ grouping: [3],
+ currency: ["$", ""]
+});
+
+export default function defaultLocale(definition) {
+ locale = formatLocale(definition);
+ format = locale.format;
+ formatPrefix = locale.formatPrefix;
+ return locale;
+}
diff --git a/node_modules/d3-format/src/exponent.js b/node_modules/d3-format/src/exponent.js
new file mode 100644
index 00000000..79b67e3d
--- /dev/null
+++ b/node_modules/d3-format/src/exponent.js
@@ -0,0 +1,5 @@
+import {formatDecimalParts} from "./formatDecimal.js";
+
+export default function(x) {
+ return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN;
+}
diff --git a/node_modules/d3-format/src/formatDecimal.js b/node_modules/d3-format/src/formatDecimal.js
new file mode 100644
index 00000000..4b341924
--- /dev/null
+++ b/node_modules/d3-format/src/formatDecimal.js
@@ -0,0 +1,20 @@
+export default function(x) {
+ return Math.abs(x = Math.round(x)) >= 1e21
+ ? x.toLocaleString("en").replace(/,/g, "")
+ : x.toString(10);
+}
+
+// Computes the decimal coefficient and exponent of the specified number x with
+// significant digits p, where x is positive and p is in [1, 21] or undefined.
+// For example, formatDecimalParts(1.23) returns ["123", 0].
+export function formatDecimalParts(x, p) {
+ if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity
+ var i, coefficient = x.slice(0, i);
+
+ // The string returned by toExponential either has the form \d\.\d+e[-+]\d+
+ // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3).
+ return [
+ coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,
+ +x.slice(i + 1)
+ ];
+}
diff --git a/node_modules/d3-format/src/formatGroup.js b/node_modules/d3-format/src/formatGroup.js
new file mode 100644
index 00000000..ae603d3a
--- /dev/null
+++ b/node_modules/d3-format/src/formatGroup.js
@@ -0,0 +1,18 @@
+export default function(grouping, thousands) {
+ return function(value, width) {
+ var i = value.length,
+ t = [],
+ j = 0,
+ g = grouping[0],
+ length = 0;
+
+ while (i > 0 && g > 0) {
+ if (length + g + 1 > width) g = Math.max(1, width - length);
+ t.push(value.substring(i -= g, i + g));
+ if ((length += g + 1) > width) break;
+ g = grouping[j = (j + 1) % grouping.length];
+ }
+
+ return t.reverse().join(thousands);
+ };
+}
diff --git a/node_modules/d3-format/src/formatNumerals.js b/node_modules/d3-format/src/formatNumerals.js
new file mode 100644
index 00000000..046317e9
--- /dev/null
+++ b/node_modules/d3-format/src/formatNumerals.js
@@ -0,0 +1,7 @@
+export default function(numerals) {
+ return function(value) {
+ return value.replace(/[0-9]/g, function(i) {
+ return numerals[+i];
+ });
+ };
+}
diff --git a/node_modules/d3-format/src/formatPrefixAuto.js b/node_modules/d3-format/src/formatPrefixAuto.js
new file mode 100644
index 00000000..907742aa
--- /dev/null
+++ b/node_modules/d3-format/src/formatPrefixAuto.js
@@ -0,0 +1,16 @@
+import {formatDecimalParts} from "./formatDecimal.js";
+
+export var prefixExponent;
+
+export default function(x, p) {
+ var d = formatDecimalParts(x, p);
+ if (!d) return x + "";
+ var coefficient = d[0],
+ exponent = d[1],
+ i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,
+ n = coefficient.length;
+ return i === n ? coefficient
+ : i > n ? coefficient + new Array(i - n + 1).join("0")
+ : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i)
+ : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y!
+}
diff --git a/node_modules/d3-format/src/formatRounded.js b/node_modules/d3-format/src/formatRounded.js
new file mode 100644
index 00000000..ea5e10da
--- /dev/null
+++ b/node_modules/d3-format/src/formatRounded.js
@@ -0,0 +1,11 @@
+import {formatDecimalParts} from "./formatDecimal.js";
+
+export default function(x, p) {
+ var d = formatDecimalParts(x, p);
+ if (!d) return x + "";
+ var coefficient = d[0],
+ exponent = d[1];
+ return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient
+ : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1)
+ : coefficient + new Array(exponent - coefficient.length + 2).join("0");
+}
diff --git a/node_modules/d3-format/src/formatSpecifier.js b/node_modules/d3-format/src/formatSpecifier.js
new file mode 100644
index 00000000..2dabb2f4
--- /dev/null
+++ b/node_modules/d3-format/src/formatSpecifier.js
@@ -0,0 +1,47 @@
+// [[fill]align][sign][symbol][0][width][,][.precision][~][type]
+var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i;
+
+export default function formatSpecifier(specifier) {
+ if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier);
+ var match;
+ return new FormatSpecifier({
+ fill: match[1],
+ align: match[2],
+ sign: match[3],
+ symbol: match[4],
+ zero: match[5],
+ width: match[6],
+ comma: match[7],
+ precision: match[8] && match[8].slice(1),
+ trim: match[9],
+ type: match[10]
+ });
+}
+
+formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof
+
+export function FormatSpecifier(specifier) {
+ this.fill = specifier.fill === undefined ? " " : specifier.fill + "";
+ this.align = specifier.align === undefined ? ">" : specifier.align + "";
+ this.sign = specifier.sign === undefined ? "-" : specifier.sign + "";
+ this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + "";
+ this.zero = !!specifier.zero;
+ this.width = specifier.width === undefined ? undefined : +specifier.width;
+ this.comma = !!specifier.comma;
+ this.precision = specifier.precision === undefined ? undefined : +specifier.precision;
+ this.trim = !!specifier.trim;
+ this.type = specifier.type === undefined ? "" : specifier.type + "";
+}
+
+FormatSpecifier.prototype.toString = function() {
+ return this.fill
+ + this.align
+ + this.sign
+ + this.symbol
+ + (this.zero ? "0" : "")
+ + (this.width === undefined ? "" : Math.max(1, this.width | 0))
+ + (this.comma ? "," : "")
+ + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0))
+ + (this.trim ? "~" : "")
+ + this.type;
+};
diff --git a/node_modules/d3-format/src/formatTrim.js b/node_modules/d3-format/src/formatTrim.js
new file mode 100644
index 00000000..b0d647b3
--- /dev/null
+++ b/node_modules/d3-format/src/formatTrim.js
@@ -0,0 +1,11 @@
+// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.
+export default function(s) {
+ out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {
+ switch (s[i]) {
+ case ".": i0 = i1 = i; break;
+ case "0": if (i0 === 0) i0 = i; i1 = i; break;
+ default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break;
+ }
+ }
+ return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
+}
diff --git a/node_modules/d3-format/src/formatTypes.js b/node_modules/d3-format/src/formatTypes.js
new file mode 100644
index 00000000..007db36d
--- /dev/null
+++ b/node_modules/d3-format/src/formatTypes.js
@@ -0,0 +1,19 @@
+import formatDecimal from "./formatDecimal.js";
+import formatPrefixAuto from "./formatPrefixAuto.js";
+import formatRounded from "./formatRounded.js";
+
+export default {
+ "%": (x, p) => (x * 100).toFixed(p),
+ "b": (x) => Math.round(x).toString(2),
+ "c": (x) => x + "",
+ "d": formatDecimal,
+ "e": (x, p) => x.toExponential(p),
+ "f": (x, p) => x.toFixed(p),
+ "g": (x, p) => x.toPrecision(p),
+ "o": (x) => Math.round(x).toString(8),
+ "p": (x, p) => formatRounded(x * 100, p),
+ "r": formatRounded,
+ "s": formatPrefixAuto,
+ "X": (x) => Math.round(x).toString(16).toUpperCase(),
+ "x": (x) => Math.round(x).toString(16)
+};
diff --git a/node_modules/d3-format/src/identity.js b/node_modules/d3-format/src/identity.js
new file mode 100644
index 00000000..b2f94b2e
--- /dev/null
+++ b/node_modules/d3-format/src/identity.js
@@ -0,0 +1,3 @@
+export default function(x) {
+ return x;
+}
diff --git a/node_modules/d3-format/src/index.js b/node_modules/d3-format/src/index.js
new file mode 100644
index 00000000..22ae6b24
--- /dev/null
+++ b/node_modules/d3-format/src/index.js
@@ -0,0 +1,6 @@
+export {default as formatDefaultLocale, format, formatPrefix} from "./defaultLocale.js";
+export {default as formatLocale} from "./locale.js";
+export {default as formatSpecifier, FormatSpecifier} from "./formatSpecifier.js";
+export {default as precisionFixed} from "./precisionFixed.js";
+export {default as precisionPrefix} from "./precisionPrefix.js";
+export {default as precisionRound} from "./precisionRound.js";
diff --git a/node_modules/d3-format/src/locale.js b/node_modules/d3-format/src/locale.js
new file mode 100644
index 00000000..404f9414
--- /dev/null
+++ b/node_modules/d3-format/src/locale.js
@@ -0,0 +1,148 @@
+import exponent from "./exponent.js";
+import formatGroup from "./formatGroup.js";
+import formatNumerals from "./formatNumerals.js";
+import formatSpecifier from "./formatSpecifier.js";
+import formatTrim from "./formatTrim.js";
+import formatTypes from "./formatTypes.js";
+import {prefixExponent} from "./formatPrefixAuto.js";
+import identity from "./identity.js";
+
+var map = Array.prototype.map,
+ prefixes = ["y","z","a","f","p","n","µ","m","","k","M","G","T","P","E","Z","Y"];
+
+export default function(locale) {
+ var group = locale.grouping === undefined || locale.thousands === undefined ? identity : formatGroup(map.call(locale.grouping, Number), locale.thousands + ""),
+ currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "",
+ currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "",
+ decimal = locale.decimal === undefined ? "." : locale.decimal + "",
+ numerals = locale.numerals === undefined ? identity : formatNumerals(map.call(locale.numerals, String)),
+ percent = locale.percent === undefined ? "%" : locale.percent + "",
+ minus = locale.minus === undefined ? "−" : locale.minus + "",
+ nan = locale.nan === undefined ? "NaN" : locale.nan + "";
+
+ function newFormat(specifier) {
+ specifier = formatSpecifier(specifier);
+
+ var fill = specifier.fill,
+ align = specifier.align,
+ sign = specifier.sign,
+ symbol = specifier.symbol,
+ zero = specifier.zero,
+ width = specifier.width,
+ comma = specifier.comma,
+ precision = specifier.precision,
+ trim = specifier.trim,
+ type = specifier.type;
+
+ // The "n" type is an alias for ",g".
+ if (type === "n") comma = true, type = "g";
+
+ // The "" type, and any invalid type, is an alias for ".12~g".
+ else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g";
+
+ // If zero fill is specified, padding goes after sign and before digits.
+ if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "=";
+
+ // Compute the prefix and suffix.
+ // For SI-prefix, the suffix is lazily computed.
+ var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "",
+ suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : "";
+
+ // What format function should we use?
+ // Is this an integer type?
+ // Can this type generate exponential notation?
+ var formatType = formatTypes[type],
+ maybeSuffix = /[defgprs%]/.test(type);
+
+ // Set the default precision if not specified,
+ // or clamp the specified precision to the supported range.
+ // For significant precision, it must be in [1, 21].
+ // For fixed precision, it must be in [0, 20].
+ precision = precision === undefined ? 6
+ : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))
+ : Math.max(0, Math.min(20, precision));
+
+ function format(value) {
+ var valuePrefix = prefix,
+ valueSuffix = suffix,
+ i, n, c;
+
+ if (type === "c") {
+ valueSuffix = formatType(value) + valueSuffix;
+ value = "";
+ } else {
+ value = +value;
+
+ // Determine the sign. -0 is not less than 0, but 1 / -0 is!
+ var valueNegative = value < 0 || 1 / value < 0;
+
+ // Perform the initial formatting.
+ value = isNaN(value) ? nan : formatType(Math.abs(value), precision);
+
+ // Trim insignificant zeros.
+ if (trim) value = formatTrim(value);
+
+ // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.
+ if (valueNegative && +value === 0 && sign !== "+") valueNegative = false;
+
+ // Compute the prefix and suffix.
+ valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+ valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : "");
+
+ // Break the formatted value into the integer “value” part that can be
+ // grouped, and fractional or exponential “suffix” part that is not.
+ if (maybeSuffix) {
+ i = -1, n = value.length;
+ while (++i < n) {
+ if (c = value.charCodeAt(i), 48 > c || c > 57) {
+ valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;
+ value = value.slice(0, i);
+ break;
+ }
+ }
+ }
+ }
+
+ // If the fill character is not "0", grouping is applied before padding.
+ if (comma && !zero) value = group(value, Infinity);
+
+ // Compute the padding.
+ var length = valuePrefix.length + value.length + valueSuffix.length,
+ padding = length < width ? new Array(width - length + 1).join(fill) : "";
+
+ // If the fill character is "0", grouping is applied after padding.
+ if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = "";
+
+ // Reconstruct the final output based on the desired alignment.
+ switch (align) {
+ case "<": value = valuePrefix + value + valueSuffix + padding; break;
+ case "=": value = valuePrefix + padding + value + valueSuffix; break;
+ case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break;
+ default: value = padding + valuePrefix + value + valueSuffix; break;
+ }
+
+ return numerals(value);
+ }
+
+ format.toString = function() {
+ return specifier + "";
+ };
+
+ return format;
+ }
+
+ function formatPrefix(specifier, value) {
+ var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)),
+ e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,
+ k = Math.pow(10, -e),
+ prefix = prefixes[8 + e / 3];
+ return function(value) {
+ return f(k * value) + prefix;
+ };
+ }
+
+ return {
+ format: newFormat,
+ formatPrefix: formatPrefix
+ };
+}
diff --git a/node_modules/d3-format/src/precisionFixed.js b/node_modules/d3-format/src/precisionFixed.js
new file mode 100644
index 00000000..237f53f8
--- /dev/null
+++ b/node_modules/d3-format/src/precisionFixed.js
@@ -0,0 +1,5 @@
+import exponent from "./exponent.js";
+
+export default function(step) {
+ return Math.max(0, -exponent(Math.abs(step)));
+}
diff --git a/node_modules/d3-format/src/precisionPrefix.js b/node_modules/d3-format/src/precisionPrefix.js
new file mode 100644
index 00000000..fd6af844
--- /dev/null
+++ b/node_modules/d3-format/src/precisionPrefix.js
@@ -0,0 +1,5 @@
+import exponent from "./exponent.js";
+
+export default function(step, value) {
+ return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));
+}
diff --git a/node_modules/d3-format/src/precisionRound.js b/node_modules/d3-format/src/precisionRound.js
new file mode 100644
index 00000000..5c704370
--- /dev/null
+++ b/node_modules/d3-format/src/precisionRound.js
@@ -0,0 +1,6 @@
+import exponent from "./exponent.js";
+
+export default function(step, max) {
+ step = Math.abs(step), max = Math.abs(max) - step;
+ return Math.max(0, exponent(max) - exponent(step)) + 1;
+}
diff --git a/node_modules/d3-geo/LICENSE b/node_modules/d3-geo/LICENSE
new file mode 100644
index 00000000..de6c6fee
--- /dev/null
+++ b/node_modules/d3-geo/LICENSE
@@ -0,0 +1,34 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+This license applies to GeographicLib, versions 1.12 and later.
+
+Copyright 2008-2012 Charles Karney
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/node_modules/d3-geo/README.md b/node_modules/d3-geo/README.md
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+# d3-geo
+
+Map projections are sometimes implemented as point transformations. For instance, spherical Mercator:
+
+```js
+function mercator(x, y) {
+ return [x, Math.log(Math.tan(Math.PI / 4 + y / 2))];
+}
+```
+
+This is a reasonable *mathematical* approach if your geometry consists of continuous, infinite point sets. Yet computers do not have infinite memory, so we must instead work with discrete geometry such as polygons and polylines!
+
+Discrete geometry makes the challenge of projecting from the sphere to the plane much harder. The edges of a spherical polygon are [geodesics](https://en.wikipedia.org/wiki/Geodesic) (segments of great circles), not straight lines. Projected to the plane, geodesics are curves in all map projections except [gnomonic](#geoGnomonic), and thus accurate projection requires interpolation along each arc. D3 uses [adaptive sampling](https://bl.ocks.org/mbostock/3795544) inspired by a popular [line simplification method](https://bost.ocks.org/mike/simplify/) to balance accuracy and performance.
+
+The projection of polygons and polylines must also deal with the topological differences between the sphere and the plane. Some projections require cutting geometry that [crosses the antimeridian](https://bl.ocks.org/mbostock/3788999), while others require [clipping geometry to a great circle](https://bl.ocks.org/mbostock/3021474).
+
+Spherical polygons also require a [winding order convention](https://bl.ocks.org/mbostock/a7bdfeb041e850799a8d3dce4d8c50c8) to determine which side of the polygon is the inside: the exterior ring for polygons smaller than a hemisphere must be clockwise, while the exterior ring for polygons [larger than a hemisphere](https://bl.ocks.org/mbostock/6713736) must be anticlockwise. Interior rings representing holes must use the opposite winding order of their exterior ring. This winding order convention is also used by [TopoJSON](https://github.com/topojson) and [ESRI shapefiles](https://github.com/mbostock/shapefile); however, it is the **opposite** convention of GeoJSON’s [RFC 7946](https://tools.ietf.org/html/rfc7946#section-3.1.6). (Also note that standard GeoJSON WGS84 uses planar equirectangular coordinates, not spherical coordinates, and thus may require [stitching](https://github.com/d3/d3-geo-projection/blob/master/README.md#geostitch) to remove antimeridian cuts.)
+
+D3’s approach affords great expressiveness: you can choose the right projection, and the right aspect, for your data. D3 supports a wide variety of common and [unusual map projections](https://github.com/d3/d3-geo-projection). For more, see Part 2 of [The Toolmaker’s Guide](https://vimeo.com/106198518#t=20m0s).
+
+D3 uses [GeoJSON](http://geojson.org/geojson-spec.html) to represent geographic features in JavaScript. (See also [TopoJSON](https://github.com/mbostock/topojson), an extension of GeoJSON that is significantly more compact and encodes topology.) To convert shapefiles to GeoJSON, use [shp2json](https://github.com/mbostock/shapefile/blob/master/README.md#shp2json), part of the [shapefile package](https://github.com/mbostock/shapefile). See [Command-Line Cartography](https://medium.com/@mbostock/command-line-cartography-part-1-897aa8f8ca2c) for an introduction to d3-geo and related tools.
+
+## Installing
+
+If you use npm, `npm install d3-geo`. You can also download the [latest release on GitHub](https://github.com/d3/d3-geo/releases/latest). For vanilla HTML in modern browsers, import d3-geo from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-geo’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+```
+
+[Try d3-geo in your browser.](https://observablehq.com/collection/@d3/d3-geo)
+
+## API Reference
+
+* [Paths](#paths)
+* [Projections](#projections) ([Azimuthal](#azimuthal-projections), [Composite](#composite-projections), [Conic](#conic-projections), [Cylindrical](#cylindrical-projections))
+* [Raw Projections](#raw-projections)
+* [Spherical Math](#spherical-math)
+* [Spherical Shapes](#spherical-shapes)
+* [Streams](#streams)
+* [Transforms](#transforms)
+* [Clipping](#clipping)
+
+### Paths
+
+The geographic path generator, [d3.geoPath](#geoPath), is similar to the shape generators in [d3-shape](https://github.com/d3/d3-shape): given a GeoJSON geometry or feature object, it generates an SVG path data string or [renders the path to a Canvas](https://bl.ocks.org/mbostock/3783604). Canvas is recommended for dynamic or interactive projections to improve performance. Paths can be used with [projections](#projections) or [transforms](#transforms), or they can be used to render planar geometry directly to Canvas or SVG.
+
+# d3.geoPath ([projection [, context ]]) [<>](https://github.com/d3/d3-geo/blob/master/src/path/index.js "Source")
+
+Creates a new geographic path generator with the default settings. If *projection* is specified, sets the [current projection](#path_projection). If *context* is specified, sets the [current context](#path_context).
+
+# path (object [, arguments… ]) [<>](https://github.com/d3/d3-geo/blob/master/src/path/index.js "Source")
+
+Renders the given *object*, which may be any GeoJSON feature or geometry object:
+
+* Point - a single position.
+* MultiPoint - an array of positions.
+* LineString - an array of positions forming a continuous line.
+* MultiLineString - an array of arrays of positions forming several lines.
+* Polygon - an array of arrays of positions forming a polygon (possibly with holes).
+* MultiPolygon - a multidimensional array of positions forming multiple polygons.
+* GeometryCollection - an array of geometry objects.
+* Feature - a feature containing one of the above geometry objects.
+* FeatureCollection - an array of feature objects.
+
+The type *Sphere* is also supported, which is useful for rendering the outline of the globe; a sphere has no coordinates. Any additional *arguments* are passed along to the [pointRadius](#path_pointRadius) accessor.
+
+To display multiple features, combine them into a feature collection:
+
+```js
+svg.append("path")
+ .datum({type: "FeatureCollection", features: features})
+ .attr("d", d3.geoPath());
+```
+
+Or use multiple path elements:
+
+```js
+svg.selectAll("path")
+ .data(features)
+ .enter().append("path")
+ .attr("d", d3.geoPath());
+```
+
+Separate path elements are typically slower than a single path element. However, distinct path elements are useful for styling and interaction (e.g., click or mouseover). Canvas rendering (see [*path*.context](#path_context)) is typically faster than SVG, but requires more effort to implement styling and interaction.
+
+# path .area (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/path/area.js "Source")
+
+Returns the projected planar area (typically in square pixels) for the specified GeoJSON *object*. Point, MultiPoint, LineString and MultiLineString geometries have zero area. For Polygon and MultiPolygon geometries, this method first computes the area of the exterior ring, and then subtracts the area of any interior holes. This method observes any clipping performed by the [projection](#path_projection); see [*projection*.clipAngle](#projection_clipAngle) and [*projection*.clipExtent](#projection_clipExtent). This is the planar equivalent of [d3.geoArea](#geoArea).
+
+# path .bounds (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/path/bounds.js "Source")
+
+Returns the projected planar bounding box (typically in pixels) for the specified GeoJSON *object*. The bounding box is represented by a two-dimensional array: \[\[*x₀*, *y₀*\], \[*x₁*, *y₁*\]\], where *x₀* is the minimum *x*-coordinate, *y₀* is the minimum *y*-coordinate, *x₁* is maximum *x*-coordinate, and *y₁* is the maximum *y*-coordinate. This is handy for, say, zooming in to a particular feature. (Note that in projected planar coordinates, the minimum latitude is typically the maximum *y*-value, and the maximum latitude is typically the minimum *y*-value.) This method observes any clipping performed by the [projection](#path_projection); see [*projection*.clipAngle](#projection_clipAngle) and [*projection*.clipExtent](#projection_clipExtent). This is the planar equivalent of [d3.geoBounds](#geoBounds).
+
+# path .centroid (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/path/centroid.js "Source")
+
+Returns the projected planar centroid (typically in pixels) for the specified GeoJSON *object*. This is handy for, say, labeling state or county boundaries, or displaying a symbol map. For example, a [noncontiguous cartogram](https://bl.ocks.org/mbostock/4055908) might scale each state around its centroid. This method observes any clipping performed by the [projection](#path_projection); see [*projection*.clipAngle](#projection_clipAngle) and [*projection*.clipExtent](#projection_clipExtent). This is the planar equivalent of [d3.geoCentroid](#geoCentroid).
+
+# path .measure (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/path/measure.js "Source")
+
+Returns the projected planar length (typically in pixels) for the specified GeoJSON *object*. Point and MultiPoint geometries have zero length. For Polygon and MultiPolygon geometries, this method computes the summed length of all rings. This method observes any clipping performed by the [projection](#path_projection); see [*projection*.clipAngle](#projection_clipAngle) and [*projection*.clipExtent](#projection_clipExtent). This is the planar equivalent of [d3.geoLength](#geoLength).
+
+# path .projection ([projection ]) [<>](https://github.com/d3/d3-geo/blob/master/src/path/index.js "Source")
+
+If a *projection* is specified, sets the current projection to the specified projection. If *projection* is not specified, returns the current projection, which defaults to null. The null projection represents the identity transformation: the input geometry is not projected and is instead rendered directly in raw coordinates. This can be useful for fast rendering of [pre-projected geometry](https://bl.ocks.org/mbostock/5557726), or for fast rendering of the equirectangular projection.
+
+The given *projection* is typically one of D3’s built-in [geographic projections](#projections); however, any object that exposes a [*projection*.stream](#projection_stream) function can be used, enabling the use of [custom projections](https://bl.ocks.org/mbostock/5663666). See D3’s [transforms](#transforms) for more examples of arbitrary geometric transformations.
+
+# path .context ([context ]) [<>](https://github.com/d3/d3-geo/blob/master/src/path/index.js "Source")
+
+If *context* is specified, sets the current render context and returns the path generator. If the *context* is null, then the [path generator](#_path) will return an SVG path string; if the context is non-null, the path generator will instead call methods on the specified context to render geometry. The context must implement the following subset of the [CanvasRenderingContext2D API](https://www.w3.org/TR/2dcontext/#canvasrenderingcontext2d):
+
+* *context*.beginPath()
+* *context*.moveTo(*x*, *y*)
+* *context*.lineTo(*x*, *y*)
+* *context*.arc(*x*, *y*, *radius*, *startAngle*, *endAngle*)
+* *context*.closePath()
+
+If a *context* is not specified, returns the current render context which defaults to null.
+
+# path .pointRadius ([radius ]) [<>](https://github.com/d3/d3-geo/blob/master/src/path/index.js "Source")
+
+If *radius* is specified, sets the radius used to display Point and MultiPoint geometries to the specified number. If *radius* is not specified, returns the current radius accessor, which defaults to 4.5. While the radius is commonly specified as a number constant, it may also be specified as a function which is computed per feature, being passed the any arguments passed to the [path generator](#_path). For example, if your GeoJSON data has additional properties, you might access those properties inside the radius function to vary the point size; alternatively, you could [d3.symbol](https://github.com/d3/d3-shape#symbols) and a [projection](#geoProjection) for greater flexibility.
+
+### Projections
+
+Projections transform spherical polygonal geometry to planar polygonal geometry. D3 provides implementations of several classes of standard projections:
+
+* [Azimuthal](#azimuthal-projections)
+* [Composite](#composite-projections)
+* [Conic](#conic-projections)
+* [Cylindrical](#cylindrical-projections)
+
+For many more projections, see [d3-geo-projection](https://github.com/d3/d3-geo-projection). You can implement [custom projections](#raw-projections) using [d3.geoProjection](#geoProjection) or [d3.geoProjectionMutator](#geoProjectionMutator).
+
+# projection (point ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Returns a new array \[*x*, *y*\] (typically in pixels) representing the projected point of the given *point*. The point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees. May return null if the specified *point* has no defined projected position, such as when the point is outside the clipping bounds of the projection.
+
+# projection .invert (point ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Returns a new array \[*longitude*, *latitude*\] in degrees representing the unprojected point of the given projected *point*. The point must be specified as a two-element array \[*x*, *y*\] (typically in pixels). May return null if the specified *point* has no defined projected position, such as when the point is outside the clipping bounds of the projection.
+
+This method is only defined on invertible projections.
+
+# projection .stream (stream ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Returns a [projection stream](#streams) for the specified output *stream*. Any input geometry is projected before being streamed to the output stream. A typical projection involves several geometry transformations: the input geometry is first converted to radians, rotated on three axes, clipped to the small circle or cut along the antimeridian, and lastly projected to the plane with adaptive resampling, scale and translation.
+
+# projection .preclip ([preclip ])
+
+If *preclip* is specified, sets the projection’s spherical clipping to the specified function and returns the projection. If *preclip* is not specified, returns the current spherical clipping function (see [preclip](#preclip)).
+
+# projection .postclip ([postclip ])
+
+If *postclip* is specified, sets the projection’s cartesian clipping to the specified function and returns the projection. If *postclip* is not specified, returns the current cartesian clipping function (see [postclip](#postclip)).
+
+# projection .clipAngle ([angle ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *angle* is specified, sets the projection’s clipping circle radius to the specified angle in degrees and returns the projection. If *angle* is null, switches to [antimeridian cutting](https://bl.ocks.org/mbostock/3788999) rather than small-circle clipping. If *angle* is not specified, returns the current clip angle which defaults to null. Small-circle clipping is independent of viewport clipping via [*projection*.clipExtent](#projection_clipExtent).
+
+See also [*projection*.preclip](#projection_preclip), [d3.geoClipAntimeridian](#geoClipAntimeridian), [d3.geoClipCircle](#geoClipCircle).
+
+# projection .clipExtent ([extent ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *extent* is specified, sets the projection’s viewport clip extent to the specified bounds in pixels and returns the projection. The *extent* bounds are specified as an array \[\[x₀ , y₀ \], \[x₁ , y₁ \]\], where x₀ is the left-side of the viewport, y₀ is the top, x₁ is the right and y₁ is the bottom. If *extent* is null, no viewport clipping is performed. If *extent* is not specified, returns the current viewport clip extent which defaults to null. Viewport clipping is independent of small-circle clipping via [*projection*.clipAngle](#projection_clipAngle).
+
+See also [*projection*.postclip](#projection_postclip), [d3.geoClipRectangle](#geoClipRectangle).
+
+# projection .scale ([scale ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *scale* is specified, sets the projection’s scale factor to the specified value and returns the projection. If *scale* is not specified, returns the current scale factor; the default scale is projection-specific. The scale factor corresponds linearly to the distance between projected points; however, absolute scale factors are not equivalent across projections.
+
+# projection .translate ([translate ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *translate* is specified, sets the projection’s translation offset to the specified two-element array [tx , ty ] and returns the projection. If *translate* is not specified, returns the current translation offset which defaults to [480, 250]. The translation offset determines the pixel coordinates of the projection’s [center](#projection_center). The default translation offset places ⟨0°,0°⟩ at the center of a 960×500 area.
+
+# projection .center ([center ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *center* is specified, sets the projection’s center to the specified *center*, a two-element array of [*longitude*, *latitude*] in degrees and returns the projection. If *center* is not specified, returns the current center, which defaults to ⟨0°,0°⟩.
+
+# projection .angle ([angle ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *angle* is specified, sets the projection’s post-projection planar rotation angle to the specified *angle* in degrees and returns the projection. If *angle* is not specified, returns the projection’s current angle, which defaults to 0°. Note that it may be faster to rotate during rendering (e.g., using [*context*.rotate](https://developer.mozilla.org/docs/Web/API/CanvasRenderingContext2D/rotate)) rather than during projection.
+
+# projection .reflectX ([reflect ])
+
+If *reflect* is specified, sets whether or not the *x*-dimension is reflected (negated) in the output. If *reflect* is not specified, returns true if *x*-reflection is enabled, which defaults to false. This can be useful to display sky and astronomical data with the orb seen from below: right ascension (eastern direction) will point to the left when North is pointing up.
+
+# projection .reflectY ([reflect ])
+
+If *reflect* is specified, sets whether or not the *y*-dimension is reflected (negated) in the output. If *reflect* is not specified, returns true if *y*-reflection is enabled, which defaults to false. This is especially useful for transforming from standard [spatial reference systems](https://en.wikipedia.org/wiki/Spatial_reference_system), which treat positive *y* as pointing up, to display coordinate systems such as Canvas and SVG, which treat positive *y* as pointing down.
+
+# projection .rotate ([angles ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *rotation* is specified, sets the projection’s [three-axis spherical rotation](https://bl.ocks.org/mbostock/4282586) to the specified *angles*, which must be a two- or three-element array of numbers [*lambda*, *phi*, *gamma*] specifying the rotation angles in degrees about [each spherical axis](https://bl.ocks.org/mbostock/4282586). (These correspond to [yaw, pitch and roll](https://en.wikipedia.org/wiki/Aircraft_principal_axes).) If the rotation angle *gamma* is omitted, it defaults to 0. See also [d3.geoRotation](#geoRotation). If *rotation* is not specified, returns the current rotation which defaults [0, 0, 0].
+
+# projection .precision ([precision ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+If *precision* is specified, sets the threshold for the projection’s [adaptive resampling](https://bl.ocks.org/mbostock/3795544) to the specified value in pixels and returns the projection. This value corresponds to the [Douglas–Peucker](https://en.wikipedia.org/wiki/Ramer–Douglas–Peucker_algorithm) distance. If *precision* is not specified, returns the projection’s current resampling precision which defaults to √0.5 ≅ 0.70710…
+
+# projection .fitExtent (extent , object ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Sets the projection’s [scale](#projection_scale) and [translate](#projection_translate) to fit the specified GeoJSON *object* in the center of the given *extent*. The extent is specified as an array \[\[x₀, y₀\], \[x₁, y₁\]\], where x₀ is the left side of the bounding box, y₀ is the top, x₁ is the right and y₁ is the bottom. Returns the projection.
+
+For example, to scale and translate the [New Jersey State Plane projection](https://bl.ocks.org/mbostock/5126418) to fit a GeoJSON object *nj* in the center of a 960×500 bounding box with 20 pixels of padding on each side:
+
+```js
+var projection = d3.geoTransverseMercator()
+ .rotate([74 + 30 / 60, -38 - 50 / 60])
+ .fitExtent([[20, 20], [940, 480]], nj);
+```
+
+Any [clip extent](#projection_clipExtent) is ignored when determining the new scale and translate. The [precision](#projection_precision) used to compute the bounding box of the given *object* is computed at an effective scale of 150.
+
+# projection .fitSize (size , object ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+A convenience method for [*projection*.fitExtent](#projection_fitExtent) where the top-left corner of the extent is [0, 0]. The following two statements are equivalent:
+
+```js
+projection.fitExtent([[0, 0], [width, height]], object);
+projection.fitSize([width, height], object);
+```
+
+# projection .fitWidth (width , object ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+A convenience method for [*projection*.fitSize](#projection_fitSize) where the height is automatically chosen from the aspect ratio of *object* and the given constraint on *width*.
+
+# projection .fitHeight (height , object ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+A convenience method for [*projection*.fitSize](#projection_fitSize) where the width is automatically chosen from the aspect ratio of *object* and the given constraint on *height*.
+
+#### Azimuthal Projections
+
+Azimuthal projections project the sphere directly onto a plane.
+
+# d3.geoAzimuthalEqualArea () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/azimuthalEqualArea.js "Source")
+# d3.geoAzimuthalEqualAreaRaw
+
+[# d3.geoAzimuthalEquidistant () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/azimuthalEquidistant.js "Source")
+# d3.geoAzimuthalEquidistantRaw
+
+[# d3.geoGnomonic () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/gnomonic.js "Source")
+# d3.geoGnomonicRaw
+
+[# d3.geoOrthographic () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/orthographic.js "Source")
+# d3.geoOrthographicRaw
+
+[# d3.geoStereographic () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/stereographic.js "Source")
+# d3.geoStereographicRaw
+
+[# d3.geoEqualEarth () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/equalEarth.js "Source")
+# d3.geoEqualEarthRaw
+
+[# d3.geoAlbersUsa () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/albersUsa.js "Source")
+
+[# conic .parallels ([parallels ]) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conic.js "Source")
+
+The [two standard parallels](https://en.wikipedia.org/wiki/Map_projection#Conic) that define the map layout in conic projections.
+
+# d3.geoAlbers () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/albers.js "Source")
+
+[# d3.geoConicConformal () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicConformal.js "Source")
+# d3.geoConicConformalRaw (phi0 , phi1 ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicConformal.js "Source")
+
+[# d3.geoConicEqualArea () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicEqualArea.js "Source")
+# d3.geoConicEqualAreaRaw (phi0 , phi1 ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicEqualArea.js "Source")
+
+[# d3.geoConicEquidistant () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicEquidistant.js "Source")
+# d3.geoConicEquidistantRaw (phi0 , phi1 ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/conicEquidistant.js "Source")
+
+[# d3.geoEquirectangular () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/equirectangular.js "Source")
+# d3.geoEquirectangularRaw
+
+[# d3.geoMercator () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/mercator.js "Source")
+# d3.geoMercatorRaw
+
+[# d3.geoTransverseMercator () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/transverseMercator.js "Source")
+# d3.geoTransverseMercatorRaw
+
+[# d3.geoNaturalEarth1 () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/naturalEarth1.js "Source")
+# d3.geoNaturalEarth1Raw
+
+[# project (lambda , phi )
+
+Projects the specified point [lambda , phi ] in radians, returning a new point \[*x*, *y*\] in unitless coordinates.
+
+# project .invert (x , y )
+
+The inverse of [*project*](#_project).
+
+# d3.geoProjection (project ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Constructs a new projection from the specified [raw projection](#_project), *project*. The *project* function takes the *longitude* and *latitude* of a given point in [radians](http://mathworld.wolfram.com/Radian.html), often referred to as *lambda* (λ) and *phi* (φ), and returns a two-element array \[*x*, *y*\] representing its unit projection. The *project* function does not need to scale or translate the point, as these are applied automatically by [*projection*.scale](#projection_scale), [*projection*.translate](#projection_translate), and [*projection*.center](#projection_center). Likewise, the *project* function does not need to perform any spherical rotation, as [*projection*.rotate](#projection_rotate) is applied prior to projection.
+
+For example, a spherical Mercator projection can be implemented as:
+
+```js
+var mercator = d3.geoProjection(function(x, y) {
+ return [x, Math.log(Math.tan(Math.PI / 4 + y / 2))];
+});
+```
+
+If the *project* function exposes an *invert* method, the returned projection will also expose [*projection*.invert](#projection_invert).
+
+# d3.geoProjectionMutator (factory ) [<>](https://github.com/d3/d3-geo/blob/master/src/projection/index.js "Source")
+
+Constructs a new projection from the specified [raw projection](#_project) *factory* and returns a *mutate* function to call whenever the raw projection changes. The *factory* must return a raw projection. The returned *mutate* function returns the wrapped projection. For example, a conic projection typically has two configurable parallels. A suitable *factory* function, such as [d3.geoConicEqualAreaRaw](#geoConicEqualAreaRaw), would have the form:
+
+```js
+// y0 and y1 represent two parallels
+function conicFactory(phi0, phi1) {
+ return function conicRaw(lambda, phi) {
+ return […, …];
+ };
+}
+```
+
+Using d3.geoProjectionMutator, you can implement a standard projection that allows the parallels to be changed, reassigning the raw projection used internally by [d3.geoProjection](#geoProjection):
+
+```js
+function conicCustom() {
+ var phi0 = 29.5,
+ phi1 = 45.5,
+ mutate = d3.geoProjectionMutator(conicFactory),
+ projection = mutate(phi0, phi1);
+
+ projection.parallels = function(_) {
+ return arguments.length ? mutate(phi0 = +_[0], phi1 = +_[1]) : [phi0, phi1];
+ };
+
+ return projection;
+}
+```
+
+When creating a mutable projection, the *mutate* function is typically not exposed.
+
+### Spherical Math
+
+# d3.geoArea (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/area.js "Source")
+
+Returns the spherical area of the specified GeoJSON *object* in [steradians](https://en.wikipedia.org/wiki/Steradian). This is the spherical equivalent of [*path*.area](#path_area).
+
+# d3.geoBounds (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/bounds.js "Source")
+
+Returns the [spherical bounding box](https://www.jasondavies.com/maps/bounds/) for the specified GeoJSON *object*. The bounding box is represented by a two-dimensional array: \[\[*left*, *bottom*], \[*right*, *top*\]\], where *left* is the minimum longitude, *bottom* is the minimum latitude, *right* is maximum longitude, and *top* is the maximum latitude. All coordinates are given in degrees. (Note that in projected planar coordinates, the minimum latitude is typically the maximum *y*-value, and the maximum latitude is typically the minimum *y*-value.) This is the spherical equivalent of [*path*.bounds](#path_bounds).
+
+# d3.geoCentroid (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/centroid.js "Source")
+
+Returns the spherical centroid of the specified GeoJSON *object*. This is the spherical equivalent of [*path*.centroid](#path_centroid).
+
+# d3.geoDistance (a , b ) [<>](https://github.com/d3/d3-geo/blob/master/src/distance.js "Source")
+
+Returns the great-arc distance in [radians](http://mathworld.wolfram.com/Radian.html) between the two points *a* and *b*. Each point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees. This is the spherical equivalent of [*path*.measure](#path_measure) given a LineString of two points.
+
+# d3.geoLength (object ) [<>](https://github.com/d3/d3-geo/blob/master/src/length.js "Source")
+
+Returns the great-arc length of the specified GeoJSON *object* in [radians](http://mathworld.wolfram.com/Radian.html). For polygons, returns the perimeter of the exterior ring plus that of any interior rings. This is the spherical equivalent of [*path*.measure](#path_measure).
+
+# d3.geoInterpolate (a , b ) [<>](https://github.com/d3/d3-geo/blob/master/src/interpolate.js "Source")
+
+Returns an interpolator function given two points *a* and *b*. Each point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees. The returned interpolator function takes a single argument *t*, where *t* is a number ranging from 0 to 1; a value of 0 returns the point *a*, while a value of 1 returns the point *b*. Intermediate values interpolate from *a* to *b* along the great arc that passes through both *a* and *b*. If *a* and *b* are antipodes, an arbitrary great arc is chosen.
+
+# d3.geoContains (object , point ) [<>](https://github.com/d3/d3-geo/blob/master/src/contains.js "Source")
+
+Returns true if and only if the specified GeoJSON *object* contains the specified *point*, or false if the *object* does not contain the *point*. The point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees. For Point and MultiPoint geometries, an exact test is used; for a Sphere, true is always returned; for other geometries, an epsilon threshold is applied.
+
+# d3.geoRotation (angles ) [<>](https://github.com/d3/d3-geo/blob/master/src/rotation.js "Source")
+
+Returns a [rotation function](#_rotation) for the given *angles*, which must be a two- or three-element array of numbers [*lambda*, *phi*, *gamma*] specifying the rotation angles in degrees about [each spherical axis](https://bl.ocks.org/mbostock/4282586). (These correspond to [yaw, pitch and roll](https://en.wikipedia.org/wiki/Aircraft_principal_axes).) If the rotation angle *gamma* is omitted, it defaults to 0. See also [*projection*.rotate](#projection_rotate).
+
+# rotation (point ) [<>](https://github.com/d3/d3-geo/blob/master/src/rotation.js "Source")
+
+Returns a new array \[*longitude*, *latitude*\] in degrees representing the rotated point of the given *point*. The point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees.
+
+# rotation .invert (point ) [<>](https://github.com/d3/d3-geo/blob/master/src/rotation.js "Source")
+
+Returns a new array \[*longitude*, *latitude*\] in degrees representing the point of the given rotated *point*; the inverse of [*rotation*](#_rotation). The point must be specified as a two-element array \[*longitude*, *latitude*\] in degrees.
+
+### Spherical Shapes
+
+To generate a [great arc](https://en.wikipedia.org/wiki/Great-circle_distance) (a segment of a great circle), simply pass a GeoJSON LineString geometry object to a [d3.geoPath](#geoPath). D3’s projections use great-arc interpolation for intermediate points, so there’s no need for a great arc shape generator.
+
+# d3.geoCircle () [<>](https://github.com/d3/d3-geo/blob/master/src/circle.js "Source")
+
+Returns a new circle generator.
+
+# circle (arguments… ) [<>](https://github.com/d3/d3-geo/blob/master/src/circle.js "Source")
+
+Returns a new GeoJSON geometry object of type “Polygon” approximating a circle on the surface of a sphere, with the current [center](#circle_center), [radius](#circle_radius) and [precision](#circle_precision). Any *arguments* are passed to the accessors.
+
+# circle .center ([center ]) [<>](https://github.com/d3/d3-geo/blob/master/src/circle.js "Source")
+
+If *center* is specified, sets the circle center to the specified point \[*longitude*, *latitude*\] in degrees, and returns this circle generator. The center may also be specified as a function; this function will be invoked whenever a circle is [generated](#_circle), being passed any arguments passed to the circle generator. If *center* is not specified, returns the current center accessor, which defaults to:
+
+```js
+function center() {
+ return [0, 0];
+}
+```
+
+# circle .radius ([radius ]) [<>](https://github.com/d3/d3-geo/blob/master/src/circle.js "Source")
+
+If *radius* is specified, sets the circle radius to the specified angle in degrees, and returns this circle generator. The radius may also be specified as a function; this function will be invoked whenever a circle is [generated](#_circle), being passed any arguments passed to the circle generator. If *radius* is not specified, returns the current radius accessor, which defaults to:
+
+```js
+function radius() {
+ return 90;
+}
+```
+
+# circle .precision ([angle ]) [<>](https://github.com/d3/d3-geo/blob/master/src/circle.js "Source")
+
+If *precision* is specified, sets the circle precision to the specified angle in degrees, and returns this circle generator. The precision may also be specified as a function; this function will be invoked whenever a circle is [generated](#_circle), being passed any arguments passed to the circle generator. If *precision* is not specified, returns the current precision accessor, which defaults to:
+
+```js
+function precision() {
+ return 6;
+}
+```
+
+Small circles do not follow great arcs and thus the generated polygon is only an approximation. Specifying a smaller precision angle improves the accuracy of the approximate polygon, but also increase the cost to generate and render it.
+
+# d3.geoGraticule () [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+Constructs a geometry generator for creating graticules: a uniform grid of [meridians](https://en.wikipedia.org/wiki/Meridian_\(geography\)) and [parallels](https://en.wikipedia.org/wiki/Circle_of_latitude) for showing projection distortion. The default graticule has meridians and parallels every 10° between ±80° latitude; for the polar regions, there are meridians every 90°.
+
+# graticule () [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+Returns a GeoJSON MultiLineString geometry object representing all meridians and parallels for this graticule.
+
+# graticule .lines () [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+Returns an array of GeoJSON LineString geometry objects, one for each meridian or parallel for this graticule.
+
+# graticule .outline () [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+Returns a GeoJSON Polygon geometry object representing the outline of this graticule, i.e. along the meridians and parallels defining its extent.
+
+# graticule .extent ([extent ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *extent* is specified, sets the major and minor extents of this graticule. If *extent* is not specified, returns the current minor extent, which defaults to ⟨⟨-180°, -80° - ε⟩, ⟨180°, 80° + ε⟩⟩.
+
+# graticule .extentMajor ([extent ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *extent* is specified, sets the major extent of this graticule. If *extent* is not specified, returns the current major extent, which defaults to ⟨⟨-180°, -90° + ε⟩, ⟨180°, 90° - ε⟩⟩.
+
+# graticule .extentMinor ([extent ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *extent* is specified, sets the minor extent of this graticule. If *extent* is not specified, returns the current minor extent, which defaults to ⟨⟨-180°, -80° - ε⟩, ⟨180°, 80° + ε⟩⟩.
+
+# graticule .step ([step ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *step* is specified, sets the major and minor step for this graticule. If *step* is not specified, returns the current minor step, which defaults to ⟨10°, 10°⟩.
+
+# graticule .stepMajor ([step ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *step* is specified, sets the major step for this graticule. If *step* is not specified, returns the current major step, which defaults to ⟨90°, 360°⟩.
+
+# graticule .stepMinor ([step ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *step* is specified, sets the minor step for this graticule. If *step* is not specified, returns the current minor step, which defaults to ⟨10°, 10°⟩.
+
+# graticule .precision ([angle ]) [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+If *precision* is specified, sets the precision for this graticule, in degrees. If *precision* is not specified, returns the current precision, which defaults to 2.5°.
+
+# d3.geoGraticule10 () [<>](https://github.com/d3/d3-geo/blob/master/src/graticule.js "Source")
+
+A convenience method for directly generating the default 10° global graticule as a GeoJSON MultiLineString geometry object. Equivalent to:
+
+```js
+function geoGraticule10() {
+ return d3.geoGraticule()();
+}
+```
+
+### Streams
+
+D3 transforms geometry using a sequence of function calls, rather than materializing intermediate representations, to minimize overhead. Streams must implement several methods to receive input geometry. Streams are inherently stateful; the meaning of a [point](#point) depends on whether the point is inside of a [line](#lineStart), and likewise a line is distinguished from a ring by a [polygon](#polygonStart). Despite the name “stream”, these method calls are currently synchronous.
+
+# d3.geoStream (object , stream ) [<>](https://github.com/d3/d3-geo/blob/master/src/stream.js "Source")
+
+Streams the specified [GeoJSON](http://geojson.org) *object* to the specified [projection *stream*](#projection-streams). While both features and geometry objects are supported as input, the stream interface only describes the geometry, and thus additional feature properties are not visible to streams.
+
+# stream .point (x , y [, z ])
+
+Indicates a point with the specified coordinates *x* and *y* (and optionally *z*). The coordinate system is unspecified and implementation-dependent; for example, [projection streams](https://github.com/d3/d3-geo-projection) require spherical coordinates in degrees as input. Outside the context of a polygon or line, a point indicates a point geometry object ([Point](http://www.geojson.org/geojson-spec.html#point) or [MultiPoint](http://www.geojson.org/geojson-spec.html#multipoint)). Within a line or polygon ring, the point indicates a control point.
+
+# stream .lineStart ()
+
+Indicates the start of a line or ring. Within a polygon, indicates the start of a ring. The first ring of a polygon is the exterior ring, and is typically clockwise. Any subsequent rings indicate holes in the polygon, and are typically counterclockwise.
+
+# stream .lineEnd ()
+
+Indicates the end of a line or ring. Within a polygon, indicates the end of a ring. Unlike GeoJSON, the redundant closing coordinate of a ring is *not* indicated via [point](#point), and instead is implied via lineEnd within a polygon. Thus, the given polygon input:
+
+```json
+{
+ "type": "Polygon",
+ "coordinates": [
+ [[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]
+ ]
+}
+```
+
+Will produce the following series of method calls on the stream:
+
+```js
+stream.polygonStart();
+stream.lineStart();
+stream.point(0, 0);
+stream.point(0, 1);
+stream.point(1, 1);
+stream.point(1, 0);
+stream.lineEnd();
+stream.polygonEnd();
+```
+
+# stream .polygonStart ()
+
+Indicates the start of a polygon. The first line of a polygon indicates the exterior ring, and any subsequent lines indicate interior holes.
+
+# stream .polygonEnd ()
+
+Indicates the end of a polygon.
+
+# stream .sphere ()
+
+Indicates the sphere (the globe; the unit sphere centered at ⟨0,0,0⟩).
+
+### Transforms
+
+Transforms are a generalization of projections. Transform implement [*projection*.stream](#projection_stream) and can be passed to [*path*.projection](#path_projection). However, they only implement a subset of the other projection methods, and represent arbitrary geometric transformations rather than projections from spherical to planar coordinates.
+
+# d3.geoTransform (methods ) [<>](https://github.com/d3/d3-geo/blob/master/src/transform.js "Source")
+
+Defines an arbitrary transform using the methods defined on the specified *methods* object. Any undefined methods will use pass-through methods that propagate inputs to the output stream. For example, to reflect the *y*-dimension (see also [*identity*.reflectY](#identity_reflectY)):
+
+```js
+var reflectY = d3.geoTransform({
+ point: function(x, y) {
+ this.stream.point(x, -y);
+ }
+});
+```
+
+Or to define an affine matrix transformation:
+
+```js
+function matrix(a, b, c, d, tx, ty) {
+ return d3.geoTransform({
+ point: function(x, y) {
+ this.stream.point(a * x + b * y + tx, c * x + d * y + ty);
+ }
+ });
+}
+```
+
+# d3.geoIdentity () [<>](https://github.com/d3/d3-geo/blob/master/src/projection/identity.js "Source")
+
+The identity transform can be used to scale, translate and clip planar geometry. It implements [*projection*.scale](#projection_scale), [*projection*.translate](#projection_translate), [*projection*.fitExtent](#projection_fitExtent), [*projection*.fitSize](#projection_fitSize), [*projection*.fitWidth](#projection_fitWidth), [*projection*.fitHeight](#projection_fitHeight), [*projection*.clipExtent](#projection_clipExtent), [*projection*.angle](#projection_angle), [*projection*.reflectX](#projection_reflectX) and [*projection*.reflectY](#projection_reflectY).
+
+### Clipping
+
+Projections perform cutting or clipping of geometries in two stages.
+
+# preclip (stream )
+
+Pre-clipping occurs in geographic coordinates. Cutting along the antimeridian line, or clipping along a small circle are the most common strategies.
+
+See [*projection*.preclip](#projection_preclip).
+
+# postclip (stream )
+
+Post-clipping occurs on the plane, when a projection is bounded to a certain extent such as a rectangle.
+
+See [*projection*.postclip](#projection_postclip).
+
+Clipping functions are implemented as transformations of a [projection stream](#streams). Pre-clipping operates on spherical coordinates, in radians. Post-clipping operates on planar coordinates, in pixels.
+
+# d3.geoClipAntimeridian
+
+A clipping function which transforms a stream such that geometries (lines or polygons) that cross the antimeridian line are cut in two, one on each side. Typically used for pre-clipping.
+
+# d3.geoClipCircle (angle )
+
+Generates a clipping function which transforms a stream such that geometries are bounded by a small circle of radius *angle* around the projection’s [center](#projection_center). Typically used for pre-clipping.
+
+# d3.geoClipRectangle (x0 , y0 , x1 , y1 )
+
+Generates a clipping function which transforms a stream such that geometries are bounded by a rectangle of coordinates [[x0 , y0 ], [x1 , y1 ]]. Typically used for post-clipping.
diff --git a/node_modules/d3-geo/dist/d3-geo.js b/node_modules/d3-geo/dist/d3-geo.js
new file mode 100644
index 00000000..e782ecda
--- /dev/null
+++ b/node_modules/d3-geo/dist/d3-geo.js
@@ -0,0 +1,3124 @@
+// https://d3js.org/d3-geo/ v3.0.1 Copyright 2010-2021 Mike Bostock, 2008-2012 Charles Karney
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-array')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-array'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+}(this, (function (exports, d3Array) { 'use strict';
+
+var epsilon = 1e-6;
+var epsilon2 = 1e-12;
+var pi = Math.PI;
+var halfPi = pi / 2;
+var quarterPi = pi / 4;
+var tau = pi * 2;
+
+var degrees = 180 / pi;
+var radians = pi / 180;
+
+var abs = Math.abs;
+var atan = Math.atan;
+var atan2 = Math.atan2;
+var cos = Math.cos;
+var ceil = Math.ceil;
+var exp = Math.exp;
+var hypot = Math.hypot;
+var log = Math.log;
+var pow = Math.pow;
+var sin = Math.sin;
+var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; };
+var sqrt = Math.sqrt;
+var tan = Math.tan;
+
+function acos(x) {
+ return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);
+}
+
+function asin(x) {
+ return x > 1 ? halfPi : x < -1 ? -halfPi : Math.asin(x);
+}
+
+function haversin(x) {
+ return (x = sin(x / 2)) * x;
+}
+
+function noop() {}
+
+function streamGeometry(geometry, stream) {
+ if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) {
+ streamGeometryType[geometry.type](geometry, stream);
+ }
+}
+
+var streamObjectType = {
+ Feature: function(object, stream) {
+ streamGeometry(object.geometry, stream);
+ },
+ FeatureCollection: function(object, stream) {
+ var features = object.features, i = -1, n = features.length;
+ while (++i < n) streamGeometry(features[i].geometry, stream);
+ }
+};
+
+var streamGeometryType = {
+ Sphere: function(object, stream) {
+ stream.sphere();
+ },
+ Point: function(object, stream) {
+ object = object.coordinates;
+ stream.point(object[0], object[1], object[2]);
+ },
+ MultiPoint: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]);
+ },
+ LineString: function(object, stream) {
+ streamLine(object.coordinates, stream, 0);
+ },
+ MultiLineString: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) streamLine(coordinates[i], stream, 0);
+ },
+ Polygon: function(object, stream) {
+ streamPolygon(object.coordinates, stream);
+ },
+ MultiPolygon: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) streamPolygon(coordinates[i], stream);
+ },
+ GeometryCollection: function(object, stream) {
+ var geometries = object.geometries, i = -1, n = geometries.length;
+ while (++i < n) streamGeometry(geometries[i], stream);
+ }
+};
+
+function streamLine(coordinates, stream, closed) {
+ var i = -1, n = coordinates.length - closed, coordinate;
+ stream.lineStart();
+ while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]);
+ stream.lineEnd();
+}
+
+function streamPolygon(coordinates, stream) {
+ var i = -1, n = coordinates.length;
+ stream.polygonStart();
+ while (++i < n) streamLine(coordinates[i], stream, 1);
+ stream.polygonEnd();
+}
+
+function geoStream(object, stream) {
+ if (object && streamObjectType.hasOwnProperty(object.type)) {
+ streamObjectType[object.type](object, stream);
+ } else {
+ streamGeometry(object, stream);
+ }
+}
+
+var areaRingSum$1 = new d3Array.Adder();
+
+// hello?
+
+var areaSum$1 = new d3Array.Adder(),
+ lambda00$2,
+ phi00$2,
+ lambda0$2,
+ cosPhi0$1,
+ sinPhi0$1;
+
+var areaStream$1 = {
+ point: noop,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: function() {
+ areaRingSum$1 = new d3Array.Adder();
+ areaStream$1.lineStart = areaRingStart$1;
+ areaStream$1.lineEnd = areaRingEnd$1;
+ },
+ polygonEnd: function() {
+ var areaRing = +areaRingSum$1;
+ areaSum$1.add(areaRing < 0 ? tau + areaRing : areaRing);
+ this.lineStart = this.lineEnd = this.point = noop;
+ },
+ sphere: function() {
+ areaSum$1.add(tau);
+ }
+};
+
+function areaRingStart$1() {
+ areaStream$1.point = areaPointFirst$1;
+}
+
+function areaRingEnd$1() {
+ areaPoint$1(lambda00$2, phi00$2);
+}
+
+function areaPointFirst$1(lambda, phi) {
+ areaStream$1.point = areaPoint$1;
+ lambda00$2 = lambda, phi00$2 = phi;
+ lambda *= radians, phi *= radians;
+ lambda0$2 = lambda, cosPhi0$1 = cos(phi = phi / 2 + quarterPi), sinPhi0$1 = sin(phi);
+}
+
+function areaPoint$1(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ phi = phi / 2 + quarterPi; // half the angular distance from south pole
+
+ // Spherical excess E for a spherical triangle with vertices: south pole,
+ // previous point, current point. Uses a formula derived from Cagnoli’s
+ // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2).
+ var dLambda = lambda - lambda0$2,
+ sdLambda = dLambda >= 0 ? 1 : -1,
+ adLambda = sdLambda * dLambda,
+ cosPhi = cos(phi),
+ sinPhi = sin(phi),
+ k = sinPhi0$1 * sinPhi,
+ u = cosPhi0$1 * cosPhi + k * cos(adLambda),
+ v = k * sdLambda * sin(adLambda);
+ areaRingSum$1.add(atan2(v, u));
+
+ // Advance the previous points.
+ lambda0$2 = lambda, cosPhi0$1 = cosPhi, sinPhi0$1 = sinPhi;
+}
+
+function area(object) {
+ areaSum$1 = new d3Array.Adder();
+ geoStream(object, areaStream$1);
+ return areaSum$1 * 2;
+}
+
+function spherical(cartesian) {
+ return [atan2(cartesian[1], cartesian[0]), asin(cartesian[2])];
+}
+
+function cartesian(spherical) {
+ var lambda = spherical[0], phi = spherical[1], cosPhi = cos(phi);
+ return [cosPhi * cos(lambda), cosPhi * sin(lambda), sin(phi)];
+}
+
+function cartesianDot(a, b) {
+ return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+}
+
+function cartesianCross(a, b) {
+ return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]];
+}
+
+// TODO return a
+function cartesianAddInPlace(a, b) {
+ a[0] += b[0], a[1] += b[1], a[2] += b[2];
+}
+
+function cartesianScale(vector, k) {
+ return [vector[0] * k, vector[1] * k, vector[2] * k];
+}
+
+// TODO return d
+function cartesianNormalizeInPlace(d) {
+ var l = sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+ d[0] /= l, d[1] /= l, d[2] /= l;
+}
+
+var lambda0$1, phi0, lambda1, phi1, // bounds
+ lambda2, // previous lambda-coordinate
+ lambda00$1, phi00$1, // first point
+ p0, // previous 3D point
+ deltaSum,
+ ranges,
+ range;
+
+var boundsStream$1 = {
+ point: boundsPoint$1,
+ lineStart: boundsLineStart,
+ lineEnd: boundsLineEnd,
+ polygonStart: function() {
+ boundsStream$1.point = boundsRingPoint;
+ boundsStream$1.lineStart = boundsRingStart;
+ boundsStream$1.lineEnd = boundsRingEnd;
+ deltaSum = new d3Array.Adder();
+ areaStream$1.polygonStart();
+ },
+ polygonEnd: function() {
+ areaStream$1.polygonEnd();
+ boundsStream$1.point = boundsPoint$1;
+ boundsStream$1.lineStart = boundsLineStart;
+ boundsStream$1.lineEnd = boundsLineEnd;
+ if (areaRingSum$1 < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);
+ else if (deltaSum > epsilon) phi1 = 90;
+ else if (deltaSum < -epsilon) phi0 = -90;
+ range[0] = lambda0$1, range[1] = lambda1;
+ },
+ sphere: function() {
+ lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90);
+ }
+};
+
+function boundsPoint$1(lambda, phi) {
+ ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]);
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+}
+
+function linePoint(lambda, phi) {
+ var p = cartesian([lambda * radians, phi * radians]);
+ if (p0) {
+ var normal = cartesianCross(p0, p),
+ equatorial = [normal[1], -normal[0], 0],
+ inflection = cartesianCross(equatorial, normal);
+ cartesianNormalizeInPlace(inflection);
+ inflection = spherical(inflection);
+ var delta = lambda - lambda2,
+ sign = delta > 0 ? 1 : -1,
+ lambdai = inflection[0] * degrees * sign,
+ phii,
+ antimeridian = abs(delta) > 180;
+ if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
+ phii = inflection[1] * degrees;
+ if (phii > phi1) phi1 = phii;
+ } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
+ phii = -inflection[1] * degrees;
+ if (phii < phi0) phi0 = phii;
+ } else {
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+ }
+ if (antimeridian) {
+ if (lambda < lambda2) {
+ if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda;
+ } else {
+ if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda;
+ }
+ } else {
+ if (lambda1 >= lambda0$1) {
+ if (lambda < lambda0$1) lambda0$1 = lambda;
+ if (lambda > lambda1) lambda1 = lambda;
+ } else {
+ if (lambda > lambda2) {
+ if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda;
+ } else {
+ if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda;
+ }
+ }
+ }
+ } else {
+ ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]);
+ }
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+ p0 = p, lambda2 = lambda;
+}
+
+function boundsLineStart() {
+ boundsStream$1.point = linePoint;
+}
+
+function boundsLineEnd() {
+ range[0] = lambda0$1, range[1] = lambda1;
+ boundsStream$1.point = boundsPoint$1;
+ p0 = null;
+}
+
+function boundsRingPoint(lambda, phi) {
+ if (p0) {
+ var delta = lambda - lambda2;
+ deltaSum.add(abs(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta);
+ } else {
+ lambda00$1 = lambda, phi00$1 = phi;
+ }
+ areaStream$1.point(lambda, phi);
+ linePoint(lambda, phi);
+}
+
+function boundsRingStart() {
+ areaStream$1.lineStart();
+}
+
+function boundsRingEnd() {
+ boundsRingPoint(lambda00$1, phi00$1);
+ areaStream$1.lineEnd();
+ if (abs(deltaSum) > epsilon) lambda0$1 = -(lambda1 = 180);
+ range[0] = lambda0$1, range[1] = lambda1;
+ p0 = null;
+}
+
+// Finds the left-right distance between two longitudes.
+// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want
+// the distance between ±180° to be 360°.
+function angle(lambda0, lambda1) {
+ return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1;
+}
+
+function rangeCompare(a, b) {
+ return a[0] - b[0];
+}
+
+function rangeContains(range, x) {
+ return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
+}
+
+function bounds(feature) {
+ var i, n, a, b, merged, deltaMax, delta;
+
+ phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity);
+ ranges = [];
+ geoStream(feature, boundsStream$1);
+
+ // First, sort ranges by their minimum longitudes.
+ if (n = ranges.length) {
+ ranges.sort(rangeCompare);
+
+ // Then, merge any ranges that overlap.
+ for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) {
+ b = ranges[i];
+ if (rangeContains(a, b[0]) || rangeContains(a, b[1])) {
+ if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
+ if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
+ } else {
+ merged.push(a = b);
+ }
+ }
+
+ // Finally, find the largest gap between the merged ranges.
+ // The final bounding box will be the inverse of this gap.
+ for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) {
+ b = merged[i];
+ if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1];
+ }
+ }
+
+ ranges = range = null;
+
+ return lambda0$1 === Infinity || phi0 === Infinity
+ ? [[NaN, NaN], [NaN, NaN]]
+ : [[lambda0$1, phi0], [lambda1, phi1]];
+}
+
+var W0, W1,
+ X0$1, Y0$1, Z0$1,
+ X1$1, Y1$1, Z1$1,
+ X2$1, Y2$1, Z2$1,
+ lambda00, phi00, // first point
+ x0$4, y0$4, z0; // previous point
+
+var centroidStream$1 = {
+ sphere: noop,
+ point: centroidPoint$1,
+ lineStart: centroidLineStart$1,
+ lineEnd: centroidLineEnd$1,
+ polygonStart: function() {
+ centroidStream$1.lineStart = centroidRingStart$1;
+ centroidStream$1.lineEnd = centroidRingEnd$1;
+ },
+ polygonEnd: function() {
+ centroidStream$1.lineStart = centroidLineStart$1;
+ centroidStream$1.lineEnd = centroidLineEnd$1;
+ }
+};
+
+// Arithmetic mean of Cartesian vectors.
+function centroidPoint$1(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi);
+ centroidPointCartesian(cosPhi * cos(lambda), cosPhi * sin(lambda), sin(phi));
+}
+
+function centroidPointCartesian(x, y, z) {
+ ++W0;
+ X0$1 += (x - X0$1) / W0;
+ Y0$1 += (y - Y0$1) / W0;
+ Z0$1 += (z - Z0$1) / W0;
+}
+
+function centroidLineStart$1() {
+ centroidStream$1.point = centroidLinePointFirst;
+}
+
+function centroidLinePointFirst(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi);
+ x0$4 = cosPhi * cos(lambda);
+ y0$4 = cosPhi * sin(lambda);
+ z0 = sin(phi);
+ centroidStream$1.point = centroidLinePoint;
+ centroidPointCartesian(x0$4, y0$4, z0);
+}
+
+function centroidLinePoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi),
+ x = cosPhi * cos(lambda),
+ y = cosPhi * sin(lambda),
+ z = sin(phi),
+ w = atan2(sqrt((w = y0$4 * z - z0 * y) * w + (w = z0 * x - x0$4 * z) * w + (w = x0$4 * y - y0$4 * x) * w), x0$4 * x + y0$4 * y + z0 * z);
+ W1 += w;
+ X1$1 += w * (x0$4 + (x0$4 = x));
+ Y1$1 += w * (y0$4 + (y0$4 = y));
+ Z1$1 += w * (z0 + (z0 = z));
+ centroidPointCartesian(x0$4, y0$4, z0);
+}
+
+function centroidLineEnd$1() {
+ centroidStream$1.point = centroidPoint$1;
+}
+
+// See J. E. Brock, The Inertia Tensor for a Spherical Triangle,
+// J. Applied Mechanics 42, 239 (1975).
+function centroidRingStart$1() {
+ centroidStream$1.point = centroidRingPointFirst;
+}
+
+function centroidRingEnd$1() {
+ centroidRingPoint(lambda00, phi00);
+ centroidStream$1.point = centroidPoint$1;
+}
+
+function centroidRingPointFirst(lambda, phi) {
+ lambda00 = lambda, phi00 = phi;
+ lambda *= radians, phi *= radians;
+ centroidStream$1.point = centroidRingPoint;
+ var cosPhi = cos(phi);
+ x0$4 = cosPhi * cos(lambda);
+ y0$4 = cosPhi * sin(lambda);
+ z0 = sin(phi);
+ centroidPointCartesian(x0$4, y0$4, z0);
+}
+
+function centroidRingPoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi),
+ x = cosPhi * cos(lambda),
+ y = cosPhi * sin(lambda),
+ z = sin(phi),
+ cx = y0$4 * z - z0 * y,
+ cy = z0 * x - x0$4 * z,
+ cz = x0$4 * y - y0$4 * x,
+ m = hypot(cx, cy, cz),
+ w = asin(m), // line weight = angle
+ v = m && -w / m; // area weight multiplier
+ X2$1.add(v * cx);
+ Y2$1.add(v * cy);
+ Z2$1.add(v * cz);
+ W1 += w;
+ X1$1 += w * (x0$4 + (x0$4 = x));
+ Y1$1 += w * (y0$4 + (y0$4 = y));
+ Z1$1 += w * (z0 + (z0 = z));
+ centroidPointCartesian(x0$4, y0$4, z0);
+}
+
+function centroid(object) {
+ W0 = W1 =
+ X0$1 = Y0$1 = Z0$1 =
+ X1$1 = Y1$1 = Z1$1 = 0;
+ X2$1 = new d3Array.Adder();
+ Y2$1 = new d3Array.Adder();
+ Z2$1 = new d3Array.Adder();
+ geoStream(object, centroidStream$1);
+
+ var x = +X2$1,
+ y = +Y2$1,
+ z = +Z2$1,
+ m = hypot(x, y, z);
+
+ // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid.
+ if (m < epsilon2) {
+ x = X1$1, y = Y1$1, z = Z1$1;
+ // If the feature has zero length, fall back to arithmetic mean of point vectors.
+ if (W1 < epsilon) x = X0$1, y = Y0$1, z = Z0$1;
+ m = hypot(x, y, z);
+ // If the feature still has an undefined ccentroid, then return.
+ if (m < epsilon2) return [NaN, NaN];
+ }
+
+ return [atan2(y, x) * degrees, asin(z / m) * degrees];
+}
+
+function constant(x) {
+ return function() {
+ return x;
+ };
+}
+
+function compose(a, b) {
+
+ function compose(x, y) {
+ return x = a(x, y), b(x[0], x[1]);
+ }
+
+ if (a.invert && b.invert) compose.invert = function(x, y) {
+ return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+ };
+
+ return compose;
+}
+
+function rotationIdentity(lambda, phi) {
+ return [abs(lambda) > pi ? lambda + Math.round(-lambda / tau) * tau : lambda, phi];
+}
+
+rotationIdentity.invert = rotationIdentity;
+
+function rotateRadians(deltaLambda, deltaPhi, deltaGamma) {
+ return (deltaLambda %= tau) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma))
+ : rotationLambda(deltaLambda))
+ : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma)
+ : rotationIdentity);
+}
+
+function forwardRotationLambda(deltaLambda) {
+ return function(lambda, phi) {
+ return lambda += deltaLambda, [lambda > pi ? lambda - tau : lambda < -pi ? lambda + tau : lambda, phi];
+ };
+}
+
+function rotationLambda(deltaLambda) {
+ var rotation = forwardRotationLambda(deltaLambda);
+ rotation.invert = forwardRotationLambda(-deltaLambda);
+ return rotation;
+}
+
+function rotationPhiGamma(deltaPhi, deltaGamma) {
+ var cosDeltaPhi = cos(deltaPhi),
+ sinDeltaPhi = sin(deltaPhi),
+ cosDeltaGamma = cos(deltaGamma),
+ sinDeltaGamma = sin(deltaGamma);
+
+ function rotation(lambda, phi) {
+ var cosPhi = cos(phi),
+ x = cos(lambda) * cosPhi,
+ y = sin(lambda) * cosPhi,
+ z = sin(phi),
+ k = z * cosDeltaPhi + x * sinDeltaPhi;
+ return [
+ atan2(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi),
+ asin(k * cosDeltaGamma + y * sinDeltaGamma)
+ ];
+ }
+
+ rotation.invert = function(lambda, phi) {
+ var cosPhi = cos(phi),
+ x = cos(lambda) * cosPhi,
+ y = sin(lambda) * cosPhi,
+ z = sin(phi),
+ k = z * cosDeltaGamma - y * sinDeltaGamma;
+ return [
+ atan2(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi),
+ asin(k * cosDeltaPhi - x * sinDeltaPhi)
+ ];
+ };
+
+ return rotation;
+}
+
+function rotation(rotate) {
+ rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0);
+
+ function forward(coordinates) {
+ coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians);
+ return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+ }
+
+ forward.invert = function(coordinates) {
+ coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians);
+ return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+ };
+
+ return forward;
+}
+
+// Generates a circle centered at [0°, 0°], with a given radius and precision.
+function circleStream(stream, radius, delta, direction, t0, t1) {
+ if (!delta) return;
+ var cosRadius = cos(radius),
+ sinRadius = sin(radius),
+ step = direction * delta;
+ if (t0 == null) {
+ t0 = radius + direction * tau;
+ t1 = radius - step / 2;
+ } else {
+ t0 = circleRadius(cosRadius, t0);
+ t1 = circleRadius(cosRadius, t1);
+ if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau;
+ }
+ for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) {
+ point = spherical([cosRadius, -sinRadius * cos(t), -sinRadius * sin(t)]);
+ stream.point(point[0], point[1]);
+ }
+}
+
+// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0].
+function circleRadius(cosRadius, point) {
+ point = cartesian(point), point[0] -= cosRadius;
+ cartesianNormalizeInPlace(point);
+ var radius = acos(-point[1]);
+ return ((-point[2] < 0 ? -radius : radius) + tau - epsilon) % tau;
+}
+
+function circle$1() {
+ var center = constant([0, 0]),
+ radius = constant(90),
+ precision = constant(6),
+ ring,
+ rotate,
+ stream = {point: point};
+
+ function point(x, y) {
+ ring.push(x = rotate(x, y));
+ x[0] *= degrees, x[1] *= degrees;
+ }
+
+ function circle() {
+ var c = center.apply(this, arguments),
+ r = radius.apply(this, arguments) * radians,
+ p = precision.apply(this, arguments) * radians;
+ ring = [];
+ rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert;
+ circleStream(stream, r, p, 1);
+ c = {type: "Polygon", coordinates: [ring]};
+ ring = rotate = null;
+ return c;
+ }
+
+ circle.center = function(_) {
+ return arguments.length ? (center = typeof _ === "function" ? _ : constant([+_[0], +_[1]]), circle) : center;
+ };
+
+ circle.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), circle) : radius;
+ };
+
+ circle.precision = function(_) {
+ return arguments.length ? (precision = typeof _ === "function" ? _ : constant(+_), circle) : precision;
+ };
+
+ return circle;
+}
+
+function clipBuffer() {
+ var lines = [],
+ line;
+ return {
+ point: function(x, y, m) {
+ line.push([x, y, m]);
+ },
+ lineStart: function() {
+ lines.push(line = []);
+ },
+ lineEnd: noop,
+ rejoin: function() {
+ if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
+ },
+ result: function() {
+ var result = lines;
+ lines = [];
+ line = null;
+ return result;
+ }
+ };
+}
+
+function pointEqual(a, b) {
+ return abs(a[0] - b[0]) < epsilon && abs(a[1] - b[1]) < epsilon;
+}
+
+function Intersection(point, points, other, entry) {
+ this.x = point;
+ this.z = points;
+ this.o = other; // another intersection
+ this.e = entry; // is an entry?
+ this.v = false; // visited
+ this.n = this.p = null; // next & previous
+}
+
+// A generalized polygon clipping algorithm: given a polygon that has been cut
+// into its visible line segments, and rejoins the segments by interpolating
+// along the clip edge.
+function clipRejoin(segments, compareIntersection, startInside, interpolate, stream) {
+ var subject = [],
+ clip = [],
+ i,
+ n;
+
+ segments.forEach(function(segment) {
+ if ((n = segment.length - 1) <= 0) return;
+ var n, p0 = segment[0], p1 = segment[n], x;
+
+ if (pointEqual(p0, p1)) {
+ if (!p0[2] && !p1[2]) {
+ stream.lineStart();
+ for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]);
+ stream.lineEnd();
+ return;
+ }
+ // handle degenerate cases by moving the point
+ p1[0] += 2 * epsilon;
+ }
+
+ subject.push(x = new Intersection(p0, segment, null, true));
+ clip.push(x.o = new Intersection(p0, null, x, false));
+ subject.push(x = new Intersection(p1, segment, null, false));
+ clip.push(x.o = new Intersection(p1, null, x, true));
+ });
+
+ if (!subject.length) return;
+
+ clip.sort(compareIntersection);
+ link(subject);
+ link(clip);
+
+ for (i = 0, n = clip.length; i < n; ++i) {
+ clip[i].e = startInside = !startInside;
+ }
+
+ var start = subject[0],
+ points,
+ point;
+
+ while (1) {
+ // Find first unvisited intersection.
+ var current = start,
+ isSubject = true;
+ while (current.v) if ((current = current.n) === start) return;
+ points = current.z;
+ stream.lineStart();
+ do {
+ current.v = current.o.v = true;
+ if (current.e) {
+ if (isSubject) {
+ for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]);
+ } else {
+ interpolate(current.x, current.n.x, 1, stream);
+ }
+ current = current.n;
+ } else {
+ if (isSubject) {
+ points = current.p.z;
+ for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]);
+ } else {
+ interpolate(current.x, current.p.x, -1, stream);
+ }
+ current = current.p;
+ }
+ current = current.o;
+ points = current.z;
+ isSubject = !isSubject;
+ } while (!current.v);
+ stream.lineEnd();
+ }
+}
+
+function link(array) {
+ if (!(n = array.length)) return;
+ var n,
+ i = 0,
+ a = array[0],
+ b;
+ while (++i < n) {
+ a.n = b = array[i];
+ b.p = a;
+ a = b;
+ }
+ a.n = b = array[0];
+ b.p = a;
+}
+
+function longitude(point) {
+ return abs(point[0]) <= pi ? point[0] : sign(point[0]) * ((abs(point[0]) + pi) % tau - pi);
+}
+
+function polygonContains(polygon, point) {
+ var lambda = longitude(point),
+ phi = point[1],
+ sinPhi = sin(phi),
+ normal = [sin(lambda), -cos(lambda), 0],
+ angle = 0,
+ winding = 0;
+
+ var sum = new d3Array.Adder();
+
+ if (sinPhi === 1) phi = halfPi + epsilon;
+ else if (sinPhi === -1) phi = -halfPi - epsilon;
+
+ for (var i = 0, n = polygon.length; i < n; ++i) {
+ if (!(m = (ring = polygon[i]).length)) continue;
+ var ring,
+ m,
+ point0 = ring[m - 1],
+ lambda0 = longitude(point0),
+ phi0 = point0[1] / 2 + quarterPi,
+ sinPhi0 = sin(phi0),
+ cosPhi0 = cos(phi0);
+
+ for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) {
+ var point1 = ring[j],
+ lambda1 = longitude(point1),
+ phi1 = point1[1] / 2 + quarterPi,
+ sinPhi1 = sin(phi1),
+ cosPhi1 = cos(phi1),
+ delta = lambda1 - lambda0,
+ sign = delta >= 0 ? 1 : -1,
+ absDelta = sign * delta,
+ antimeridian = absDelta > pi,
+ k = sinPhi0 * sinPhi1;
+
+ sum.add(atan2(k * sign * sin(absDelta), cosPhi0 * cosPhi1 + k * cos(absDelta)));
+ angle += antimeridian ? delta + sign * tau : delta;
+
+ // Are the longitudes either side of the point’s meridian (lambda),
+ // and are the latitudes smaller than the parallel (phi)?
+ if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) {
+ var arc = cartesianCross(cartesian(point0), cartesian(point1));
+ cartesianNormalizeInPlace(arc);
+ var intersection = cartesianCross(normal, arc);
+ cartesianNormalizeInPlace(intersection);
+ var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin(intersection[2]);
+ if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) {
+ winding += antimeridian ^ delta >= 0 ? 1 : -1;
+ }
+ }
+ }
+ }
+
+ // First, determine whether the South pole is inside or outside:
+ //
+ // It is inside if:
+ // * the polygon winds around it in a clockwise direction.
+ // * the polygon does not (cumulatively) wind around it, but has a negative
+ // (counter-clockwise) area.
+ //
+ // Second, count the (signed) number of times a segment crosses a lambda
+ // from the point to the South pole. If it is zero, then the point is the
+ // same side as the South pole.
+
+ return (angle < -epsilon || angle < epsilon && sum < -epsilon2) ^ (winding & 1);
+}
+
+function clip(pointVisible, clipLine, interpolate, start) {
+ return function(sink) {
+ var line = clipLine(sink),
+ ringBuffer = clipBuffer(),
+ ringSink = clipLine(ringBuffer),
+ polygonStarted = false,
+ polygon,
+ segments,
+ ring;
+
+ var clip = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: function() {
+ clip.point = pointRing;
+ clip.lineStart = ringStart;
+ clip.lineEnd = ringEnd;
+ segments = [];
+ polygon = [];
+ },
+ polygonEnd: function() {
+ clip.point = point;
+ clip.lineStart = lineStart;
+ clip.lineEnd = lineEnd;
+ segments = d3Array.merge(segments);
+ var startInside = polygonContains(polygon, start);
+ if (segments.length) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ clipRejoin(segments, compareIntersection, startInside, interpolate, sink);
+ } else if (startInside) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ sink.lineStart();
+ interpolate(null, null, 1, sink);
+ sink.lineEnd();
+ }
+ if (polygonStarted) sink.polygonEnd(), polygonStarted = false;
+ segments = polygon = null;
+ },
+ sphere: function() {
+ sink.polygonStart();
+ sink.lineStart();
+ interpolate(null, null, 1, sink);
+ sink.lineEnd();
+ sink.polygonEnd();
+ }
+ };
+
+ function point(lambda, phi) {
+ if (pointVisible(lambda, phi)) sink.point(lambda, phi);
+ }
+
+ function pointLine(lambda, phi) {
+ line.point(lambda, phi);
+ }
+
+ function lineStart() {
+ clip.point = pointLine;
+ line.lineStart();
+ }
+
+ function lineEnd() {
+ clip.point = point;
+ line.lineEnd();
+ }
+
+ function pointRing(lambda, phi) {
+ ring.push([lambda, phi]);
+ ringSink.point(lambda, phi);
+ }
+
+ function ringStart() {
+ ringSink.lineStart();
+ ring = [];
+ }
+
+ function ringEnd() {
+ pointRing(ring[0][0], ring[0][1]);
+ ringSink.lineEnd();
+
+ var clean = ringSink.clean(),
+ ringSegments = ringBuffer.result(),
+ i, n = ringSegments.length, m,
+ segment,
+ point;
+
+ ring.pop();
+ polygon.push(ring);
+ ring = null;
+
+ if (!n) return;
+
+ // No intersections.
+ if (clean & 1) {
+ segment = ringSegments[0];
+ if ((m = segment.length - 1) > 0) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ sink.lineStart();
+ for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]);
+ sink.lineEnd();
+ }
+ return;
+ }
+
+ // Rejoin connected segments.
+ // TODO reuse ringBuffer.rejoin()?
+ if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
+
+ segments.push(ringSegments.filter(validSegment));
+ }
+
+ return clip;
+ };
+}
+
+function validSegment(segment) {
+ return segment.length > 1;
+}
+
+// Intersections are sorted along the clip edge. For both antimeridian cutting
+// and circle clipping, the same comparison is used.
+function compareIntersection(a, b) {
+ return ((a = a.x)[0] < 0 ? a[1] - halfPi - epsilon : halfPi - a[1])
+ - ((b = b.x)[0] < 0 ? b[1] - halfPi - epsilon : halfPi - b[1]);
+}
+
+var clipAntimeridian = clip(
+ function() { return true; },
+ clipAntimeridianLine,
+ clipAntimeridianInterpolate,
+ [-pi, -halfPi]
+);
+
+// Takes a line and cuts into visible segments. Return values: 0 - there were
+// intersections or the line was empty; 1 - no intersections; 2 - there were
+// intersections, and the first and last segments should be rejoined.
+function clipAntimeridianLine(stream) {
+ var lambda0 = NaN,
+ phi0 = NaN,
+ sign0 = NaN,
+ clean; // no intersections
+
+ return {
+ lineStart: function() {
+ stream.lineStart();
+ clean = 1;
+ },
+ point: function(lambda1, phi1) {
+ var sign1 = lambda1 > 0 ? pi : -pi,
+ delta = abs(lambda1 - lambda0);
+ if (abs(delta - pi) < epsilon) { // line crosses a pole
+ stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi : -halfPi);
+ stream.point(sign0, phi0);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(sign1, phi0);
+ stream.point(lambda1, phi0);
+ clean = 0;
+ } else if (sign0 !== sign1 && delta >= pi) { // line crosses antimeridian
+ if (abs(lambda0 - sign0) < epsilon) lambda0 -= sign0 * epsilon; // handle degeneracies
+ if (abs(lambda1 - sign1) < epsilon) lambda1 -= sign1 * epsilon;
+ phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1);
+ stream.point(sign0, phi0);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(sign1, phi0);
+ clean = 0;
+ }
+ stream.point(lambda0 = lambda1, phi0 = phi1);
+ sign0 = sign1;
+ },
+ lineEnd: function() {
+ stream.lineEnd();
+ lambda0 = phi0 = NaN;
+ },
+ clean: function() {
+ return 2 - clean; // if intersections, rejoin first and last segments
+ }
+ };
+}
+
+function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) {
+ var cosPhi0,
+ cosPhi1,
+ sinLambda0Lambda1 = sin(lambda0 - lambda1);
+ return abs(sinLambda0Lambda1) > epsilon
+ ? atan((sin(phi0) * (cosPhi1 = cos(phi1)) * sin(lambda1)
+ - sin(phi1) * (cosPhi0 = cos(phi0)) * sin(lambda0))
+ / (cosPhi0 * cosPhi1 * sinLambda0Lambda1))
+ : (phi0 + phi1) / 2;
+}
+
+function clipAntimeridianInterpolate(from, to, direction, stream) {
+ var phi;
+ if (from == null) {
+ phi = direction * halfPi;
+ stream.point(-pi, phi);
+ stream.point(0, phi);
+ stream.point(pi, phi);
+ stream.point(pi, 0);
+ stream.point(pi, -phi);
+ stream.point(0, -phi);
+ stream.point(-pi, -phi);
+ stream.point(-pi, 0);
+ stream.point(-pi, phi);
+ } else if (abs(from[0] - to[0]) > epsilon) {
+ var lambda = from[0] < to[0] ? pi : -pi;
+ phi = direction * lambda / 2;
+ stream.point(-lambda, phi);
+ stream.point(0, phi);
+ stream.point(lambda, phi);
+ } else {
+ stream.point(to[0], to[1]);
+ }
+}
+
+function clipCircle(radius) {
+ var cr = cos(radius),
+ delta = 6 * radians,
+ smallRadius = cr > 0,
+ notHemisphere = abs(cr) > epsilon; // TODO optimise for this common case
+
+ function interpolate(from, to, direction, stream) {
+ circleStream(stream, radius, delta, direction, from, to);
+ }
+
+ function visible(lambda, phi) {
+ return cos(lambda) * cos(phi) > cr;
+ }
+
+ // Takes a line and cuts into visible segments. Return values used for polygon
+ // clipping: 0 - there were intersections or the line was empty; 1 - no
+ // intersections 2 - there were intersections, and the first and last segments
+ // should be rejoined.
+ function clipLine(stream) {
+ var point0, // previous point
+ c0, // code for previous point
+ v0, // visibility of previous point
+ v00, // visibility of first point
+ clean; // no intersections
+ return {
+ lineStart: function() {
+ v00 = v0 = false;
+ clean = 1;
+ },
+ point: function(lambda, phi) {
+ var point1 = [lambda, phi],
+ point2,
+ v = visible(lambda, phi),
+ c = smallRadius
+ ? v ? 0 : code(lambda, phi)
+ : v ? code(lambda + (lambda < 0 ? pi : -pi), phi) : 0;
+ if (!point0 && (v00 = v0 = v)) stream.lineStart();
+ if (v !== v0) {
+ point2 = intersect(point0, point1);
+ if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2))
+ point1[2] = 1;
+ }
+ if (v !== v0) {
+ clean = 0;
+ if (v) {
+ // outside going in
+ stream.lineStart();
+ point2 = intersect(point1, point0);
+ stream.point(point2[0], point2[1]);
+ } else {
+ // inside going out
+ point2 = intersect(point0, point1);
+ stream.point(point2[0], point2[1], 2);
+ stream.lineEnd();
+ }
+ point0 = point2;
+ } else if (notHemisphere && point0 && smallRadius ^ v) {
+ var t;
+ // If the codes for two points are different, or are both zero,
+ // and there this segment intersects with the small circle.
+ if (!(c & c0) && (t = intersect(point1, point0, true))) {
+ clean = 0;
+ if (smallRadius) {
+ stream.lineStart();
+ stream.point(t[0][0], t[0][1]);
+ stream.point(t[1][0], t[1][1]);
+ stream.lineEnd();
+ } else {
+ stream.point(t[1][0], t[1][1]);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(t[0][0], t[0][1], 3);
+ }
+ }
+ }
+ if (v && (!point0 || !pointEqual(point0, point1))) {
+ stream.point(point1[0], point1[1]);
+ }
+ point0 = point1, v0 = v, c0 = c;
+ },
+ lineEnd: function() {
+ if (v0) stream.lineEnd();
+ point0 = null;
+ },
+ // Rejoin first and last segments if there were intersections and the first
+ // and last points were visible.
+ clean: function() {
+ return clean | ((v00 && v0) << 1);
+ }
+ };
+ }
+
+ // Intersects the great circle between a and b with the clip circle.
+ function intersect(a, b, two) {
+ var pa = cartesian(a),
+ pb = cartesian(b);
+
+ // We have two planes, n1.p = d1 and n2.p = d2.
+ // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2).
+ var n1 = [1, 0, 0], // normal
+ n2 = cartesianCross(pa, pb),
+ n2n2 = cartesianDot(n2, n2),
+ n1n2 = n2[0], // cartesianDot(n1, n2),
+ determinant = n2n2 - n1n2 * n1n2;
+
+ // Two polar points.
+ if (!determinant) return !two && a;
+
+ var c1 = cr * n2n2 / determinant,
+ c2 = -cr * n1n2 / determinant,
+ n1xn2 = cartesianCross(n1, n2),
+ A = cartesianScale(n1, c1),
+ B = cartesianScale(n2, c2);
+ cartesianAddInPlace(A, B);
+
+ // Solve |p(t)|^2 = 1.
+ var u = n1xn2,
+ w = cartesianDot(A, u),
+ uu = cartesianDot(u, u),
+ t2 = w * w - uu * (cartesianDot(A, A) - 1);
+
+ if (t2 < 0) return;
+
+ var t = sqrt(t2),
+ q = cartesianScale(u, (-w - t) / uu);
+ cartesianAddInPlace(q, A);
+ q = spherical(q);
+
+ if (!two) return q;
+
+ // Two intersection points.
+ var lambda0 = a[0],
+ lambda1 = b[0],
+ phi0 = a[1],
+ phi1 = b[1],
+ z;
+
+ if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z;
+
+ var delta = lambda1 - lambda0,
+ polar = abs(delta - pi) < epsilon,
+ meridian = polar || delta < epsilon;
+
+ if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z;
+
+ // Check that the first point is between a and b.
+ if (meridian
+ ? polar
+ ? phi0 + phi1 > 0 ^ q[1] < (abs(q[0] - lambda0) < epsilon ? phi0 : phi1)
+ : phi0 <= q[1] && q[1] <= phi1
+ : delta > pi ^ (lambda0 <= q[0] && q[0] <= lambda1)) {
+ var q1 = cartesianScale(u, (-w + t) / uu);
+ cartesianAddInPlace(q1, A);
+ return [q, spherical(q1)];
+ }
+ }
+
+ // Generates a 4-bit vector representing the location of a point relative to
+ // the small circle's bounding box.
+ function code(lambda, phi) {
+ var r = smallRadius ? radius : pi - radius,
+ code = 0;
+ if (lambda < -r) code |= 1; // left
+ else if (lambda > r) code |= 2; // right
+ if (phi < -r) code |= 4; // below
+ else if (phi > r) code |= 8; // above
+ return code;
+ }
+
+ return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi, radius - pi]);
+}
+
+function clipLine(a, b, x0, y0, x1, y1) {
+ var ax = a[0],
+ ay = a[1],
+ bx = b[0],
+ by = b[1],
+ t0 = 0,
+ t1 = 1,
+ dx = bx - ax,
+ dy = by - ay,
+ r;
+
+ r = x0 - ax;
+ if (!dx && r > 0) return;
+ r /= dx;
+ if (dx < 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ } else if (dx > 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ }
+
+ r = x1 - ax;
+ if (!dx && r < 0) return;
+ r /= dx;
+ if (dx < 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ } else if (dx > 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ }
+
+ r = y0 - ay;
+ if (!dy && r > 0) return;
+ r /= dy;
+ if (dy < 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ } else if (dy > 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ }
+
+ r = y1 - ay;
+ if (!dy && r < 0) return;
+ r /= dy;
+ if (dy < 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ } else if (dy > 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ }
+
+ if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy;
+ if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy;
+ return true;
+}
+
+var clipMax = 1e9, clipMin = -clipMax;
+
+// TODO Use d3-polygon’s polygonContains here for the ring check?
+// TODO Eliminate duplicate buffering in clipBuffer and polygon.push?
+
+function clipRectangle(x0, y0, x1, y1) {
+
+ function visible(x, y) {
+ return x0 <= x && x <= x1 && y0 <= y && y <= y1;
+ }
+
+ function interpolate(from, to, direction, stream) {
+ var a = 0, a1 = 0;
+ if (from == null
+ || (a = corner(from, direction)) !== (a1 = corner(to, direction))
+ || comparePoint(from, to) < 0 ^ direction > 0) {
+ do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
+ while ((a = (a + direction + 4) % 4) !== a1);
+ } else {
+ stream.point(to[0], to[1]);
+ }
+ }
+
+ function corner(p, direction) {
+ return abs(p[0] - x0) < epsilon ? direction > 0 ? 0 : 3
+ : abs(p[0] - x1) < epsilon ? direction > 0 ? 2 : 1
+ : abs(p[1] - y0) < epsilon ? direction > 0 ? 1 : 0
+ : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon
+ }
+
+ function compareIntersection(a, b) {
+ return comparePoint(a.x, b.x);
+ }
+
+ function comparePoint(a, b) {
+ var ca = corner(a, 1),
+ cb = corner(b, 1);
+ return ca !== cb ? ca - cb
+ : ca === 0 ? b[1] - a[1]
+ : ca === 1 ? a[0] - b[0]
+ : ca === 2 ? a[1] - b[1]
+ : b[0] - a[0];
+ }
+
+ return function(stream) {
+ var activeStream = stream,
+ bufferStream = clipBuffer(),
+ segments,
+ polygon,
+ ring,
+ x__, y__, v__, // first point
+ x_, y_, v_, // previous point
+ first,
+ clean;
+
+ var clipStream = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: polygonStart,
+ polygonEnd: polygonEnd
+ };
+
+ function point(x, y) {
+ if (visible(x, y)) activeStream.point(x, y);
+ }
+
+ function polygonInside() {
+ var winding = 0;
+
+ for (var i = 0, n = polygon.length; i < n; ++i) {
+ for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) {
+ a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1];
+ if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; }
+ else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; }
+ }
+ }
+
+ return winding;
+ }
+
+ // Buffer geometry within a polygon and then clip it en masse.
+ function polygonStart() {
+ activeStream = bufferStream, segments = [], polygon = [], clean = true;
+ }
+
+ function polygonEnd() {
+ var startInside = polygonInside(),
+ cleanInside = clean && startInside,
+ visible = (segments = d3Array.merge(segments)).length;
+ if (cleanInside || visible) {
+ stream.polygonStart();
+ if (cleanInside) {
+ stream.lineStart();
+ interpolate(null, null, 1, stream);
+ stream.lineEnd();
+ }
+ if (visible) {
+ clipRejoin(segments, compareIntersection, startInside, interpolate, stream);
+ }
+ stream.polygonEnd();
+ }
+ activeStream = stream, segments = polygon = ring = null;
+ }
+
+ function lineStart() {
+ clipStream.point = linePoint;
+ if (polygon) polygon.push(ring = []);
+ first = true;
+ v_ = false;
+ x_ = y_ = NaN;
+ }
+
+ // TODO rather than special-case polygons, simply handle them separately.
+ // Ideally, coincident intersection points should be jittered to avoid
+ // clipping issues.
+ function lineEnd() {
+ if (segments) {
+ linePoint(x__, y__);
+ if (v__ && v_) bufferStream.rejoin();
+ segments.push(bufferStream.result());
+ }
+ clipStream.point = point;
+ if (v_) activeStream.lineEnd();
+ }
+
+ function linePoint(x, y) {
+ var v = visible(x, y);
+ if (polygon) ring.push([x, y]);
+ if (first) {
+ x__ = x, y__ = y, v__ = v;
+ first = false;
+ if (v) {
+ activeStream.lineStart();
+ activeStream.point(x, y);
+ }
+ } else {
+ if (v && v_) activeStream.point(x, y);
+ else {
+ var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))],
+ b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))];
+ if (clipLine(a, b, x0, y0, x1, y1)) {
+ if (!v_) {
+ activeStream.lineStart();
+ activeStream.point(a[0], a[1]);
+ }
+ activeStream.point(b[0], b[1]);
+ if (!v) activeStream.lineEnd();
+ clean = false;
+ } else if (v) {
+ activeStream.lineStart();
+ activeStream.point(x, y);
+ clean = false;
+ }
+ }
+ }
+ x_ = x, y_ = y, v_ = v;
+ }
+
+ return clipStream;
+ };
+}
+
+function extent() {
+ var x0 = 0,
+ y0 = 0,
+ x1 = 960,
+ y1 = 500,
+ cache,
+ cacheStream,
+ clip;
+
+ return clip = {
+ stream: function(stream) {
+ return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream);
+ },
+ extent: function(_) {
+ return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]];
+ }
+ };
+}
+
+var lengthSum$1,
+ lambda0,
+ sinPhi0,
+ cosPhi0;
+
+var lengthStream$1 = {
+ sphere: noop,
+ point: noop,
+ lineStart: lengthLineStart,
+ lineEnd: noop,
+ polygonStart: noop,
+ polygonEnd: noop
+};
+
+function lengthLineStart() {
+ lengthStream$1.point = lengthPointFirst$1;
+ lengthStream$1.lineEnd = lengthLineEnd;
+}
+
+function lengthLineEnd() {
+ lengthStream$1.point = lengthStream$1.lineEnd = noop;
+}
+
+function lengthPointFirst$1(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ lambda0 = lambda, sinPhi0 = sin(phi), cosPhi0 = cos(phi);
+ lengthStream$1.point = lengthPoint$1;
+}
+
+function lengthPoint$1(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var sinPhi = sin(phi),
+ cosPhi = cos(phi),
+ delta = abs(lambda - lambda0),
+ cosDelta = cos(delta),
+ sinDelta = sin(delta),
+ x = cosPhi * sinDelta,
+ y = cosPhi0 * sinPhi - sinPhi0 * cosPhi * cosDelta,
+ z = sinPhi0 * sinPhi + cosPhi0 * cosPhi * cosDelta;
+ lengthSum$1.add(atan2(sqrt(x * x + y * y), z));
+ lambda0 = lambda, sinPhi0 = sinPhi, cosPhi0 = cosPhi;
+}
+
+function length(object) {
+ lengthSum$1 = new d3Array.Adder();
+ geoStream(object, lengthStream$1);
+ return +lengthSum$1;
+}
+
+var coordinates = [null, null],
+ object = {type: "LineString", coordinates: coordinates};
+
+function distance(a, b) {
+ coordinates[0] = a;
+ coordinates[1] = b;
+ return length(object);
+}
+
+var containsObjectType = {
+ Feature: function(object, point) {
+ return containsGeometry(object.geometry, point);
+ },
+ FeatureCollection: function(object, point) {
+ var features = object.features, i = -1, n = features.length;
+ while (++i < n) if (containsGeometry(features[i].geometry, point)) return true;
+ return false;
+ }
+};
+
+var containsGeometryType = {
+ Sphere: function() {
+ return true;
+ },
+ Point: function(object, point) {
+ return containsPoint(object.coordinates, point);
+ },
+ MultiPoint: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsPoint(coordinates[i], point)) return true;
+ return false;
+ },
+ LineString: function(object, point) {
+ return containsLine(object.coordinates, point);
+ },
+ MultiLineString: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsLine(coordinates[i], point)) return true;
+ return false;
+ },
+ Polygon: function(object, point) {
+ return containsPolygon(object.coordinates, point);
+ },
+ MultiPolygon: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsPolygon(coordinates[i], point)) return true;
+ return false;
+ },
+ GeometryCollection: function(object, point) {
+ var geometries = object.geometries, i = -1, n = geometries.length;
+ while (++i < n) if (containsGeometry(geometries[i], point)) return true;
+ return false;
+ }
+};
+
+function containsGeometry(geometry, point) {
+ return geometry && containsGeometryType.hasOwnProperty(geometry.type)
+ ? containsGeometryType[geometry.type](geometry, point)
+ : false;
+}
+
+function containsPoint(coordinates, point) {
+ return distance(coordinates, point) === 0;
+}
+
+function containsLine(coordinates, point) {
+ var ao, bo, ab;
+ for (var i = 0, n = coordinates.length; i < n; i++) {
+ bo = distance(coordinates[i], point);
+ if (bo === 0) return true;
+ if (i > 0) {
+ ab = distance(coordinates[i], coordinates[i - 1]);
+ if (
+ ab > 0 &&
+ ao <= ab &&
+ bo <= ab &&
+ (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2 * ab
+ )
+ return true;
+ }
+ ao = bo;
+ }
+ return false;
+}
+
+function containsPolygon(coordinates, point) {
+ return !!polygonContains(coordinates.map(ringRadians), pointRadians(point));
+}
+
+function ringRadians(ring) {
+ return ring = ring.map(pointRadians), ring.pop(), ring;
+}
+
+function pointRadians(point) {
+ return [point[0] * radians, point[1] * radians];
+}
+
+function contains(object, point) {
+ return (object && containsObjectType.hasOwnProperty(object.type)
+ ? containsObjectType[object.type]
+ : containsGeometry)(object, point);
+}
+
+function graticuleX(y0, y1, dy) {
+ var y = d3Array.range(y0, y1 - epsilon, dy).concat(y1);
+ return function(x) { return y.map(function(y) { return [x, y]; }); };
+}
+
+function graticuleY(x0, x1, dx) {
+ var x = d3Array.range(x0, x1 - epsilon, dx).concat(x1);
+ return function(y) { return x.map(function(x) { return [x, y]; }); };
+}
+
+function graticule() {
+ var x1, x0, X1, X0,
+ y1, y0, Y1, Y0,
+ dx = 10, dy = dx, DX = 90, DY = 360,
+ x, y, X, Y,
+ precision = 2.5;
+
+ function graticule() {
+ return {type: "MultiLineString", coordinates: lines()};
+ }
+
+ function lines() {
+ return d3Array.range(ceil(X0 / DX) * DX, X1, DX).map(X)
+ .concat(d3Array.range(ceil(Y0 / DY) * DY, Y1, DY).map(Y))
+ .concat(d3Array.range(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs(x % DX) > epsilon; }).map(x))
+ .concat(d3Array.range(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs(y % DY) > epsilon; }).map(y));
+ }
+
+ graticule.lines = function() {
+ return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; });
+ };
+
+ graticule.outline = function() {
+ return {
+ type: "Polygon",
+ coordinates: [
+ X(X0).concat(
+ Y(Y1).slice(1),
+ X(X1).reverse().slice(1),
+ Y(Y0).reverse().slice(1))
+ ]
+ };
+ };
+
+ graticule.extent = function(_) {
+ if (!arguments.length) return graticule.extentMinor();
+ return graticule.extentMajor(_).extentMinor(_);
+ };
+
+ graticule.extentMajor = function(_) {
+ if (!arguments.length) return [[X0, Y0], [X1, Y1]];
+ X0 = +_[0][0], X1 = +_[1][0];
+ Y0 = +_[0][1], Y1 = +_[1][1];
+ if (X0 > X1) _ = X0, X0 = X1, X1 = _;
+ if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
+ return graticule.precision(precision);
+ };
+
+ graticule.extentMinor = function(_) {
+ if (!arguments.length) return [[x0, y0], [x1, y1]];
+ x0 = +_[0][0], x1 = +_[1][0];
+ y0 = +_[0][1], y1 = +_[1][1];
+ if (x0 > x1) _ = x0, x0 = x1, x1 = _;
+ if (y0 > y1) _ = y0, y0 = y1, y1 = _;
+ return graticule.precision(precision);
+ };
+
+ graticule.step = function(_) {
+ if (!arguments.length) return graticule.stepMinor();
+ return graticule.stepMajor(_).stepMinor(_);
+ };
+
+ graticule.stepMajor = function(_) {
+ if (!arguments.length) return [DX, DY];
+ DX = +_[0], DY = +_[1];
+ return graticule;
+ };
+
+ graticule.stepMinor = function(_) {
+ if (!arguments.length) return [dx, dy];
+ dx = +_[0], dy = +_[1];
+ return graticule;
+ };
+
+ graticule.precision = function(_) {
+ if (!arguments.length) return precision;
+ precision = +_;
+ x = graticuleX(y0, y1, 90);
+ y = graticuleY(x0, x1, precision);
+ X = graticuleX(Y0, Y1, 90);
+ Y = graticuleY(X0, X1, precision);
+ return graticule;
+ };
+
+ return graticule
+ .extentMajor([[-180, -90 + epsilon], [180, 90 - epsilon]])
+ .extentMinor([[-180, -80 - epsilon], [180, 80 + epsilon]]);
+}
+
+function graticule10() {
+ return graticule()();
+}
+
+function interpolate(a, b) {
+ var x0 = a[0] * radians,
+ y0 = a[1] * radians,
+ x1 = b[0] * radians,
+ y1 = b[1] * radians,
+ cy0 = cos(y0),
+ sy0 = sin(y0),
+ cy1 = cos(y1),
+ sy1 = sin(y1),
+ kx0 = cy0 * cos(x0),
+ ky0 = cy0 * sin(x0),
+ kx1 = cy1 * cos(x1),
+ ky1 = cy1 * sin(x1),
+ d = 2 * asin(sqrt(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))),
+ k = sin(d);
+
+ var interpolate = d ? function(t) {
+ var B = sin(t *= d) / k,
+ A = sin(d - t) / k,
+ x = A * kx0 + B * kx1,
+ y = A * ky0 + B * ky1,
+ z = A * sy0 + B * sy1;
+ return [
+ atan2(y, x) * degrees,
+ atan2(z, sqrt(x * x + y * y)) * degrees
+ ];
+ } : function() {
+ return [x0 * degrees, y0 * degrees];
+ };
+
+ interpolate.distance = d;
+
+ return interpolate;
+}
+
+var identity$1 = x => x;
+
+var areaSum = new d3Array.Adder(),
+ areaRingSum = new d3Array.Adder(),
+ x00$2,
+ y00$2,
+ x0$3,
+ y0$3;
+
+var areaStream = {
+ point: noop,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: function() {
+ areaStream.lineStart = areaRingStart;
+ areaStream.lineEnd = areaRingEnd;
+ },
+ polygonEnd: function() {
+ areaStream.lineStart = areaStream.lineEnd = areaStream.point = noop;
+ areaSum.add(abs(areaRingSum));
+ areaRingSum = new d3Array.Adder();
+ },
+ result: function() {
+ var area = areaSum / 2;
+ areaSum = new d3Array.Adder();
+ return area;
+ }
+};
+
+function areaRingStart() {
+ areaStream.point = areaPointFirst;
+}
+
+function areaPointFirst(x, y) {
+ areaStream.point = areaPoint;
+ x00$2 = x0$3 = x, y00$2 = y0$3 = y;
+}
+
+function areaPoint(x, y) {
+ areaRingSum.add(y0$3 * x - x0$3 * y);
+ x0$3 = x, y0$3 = y;
+}
+
+function areaRingEnd() {
+ areaPoint(x00$2, y00$2);
+}
+
+var x0$2 = Infinity,
+ y0$2 = x0$2,
+ x1 = -x0$2,
+ y1 = x1;
+
+var boundsStream = {
+ point: boundsPoint,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: noop,
+ polygonEnd: noop,
+ result: function() {
+ var bounds = [[x0$2, y0$2], [x1, y1]];
+ x1 = y1 = -(y0$2 = x0$2 = Infinity);
+ return bounds;
+ }
+};
+
+function boundsPoint(x, y) {
+ if (x < x0$2) x0$2 = x;
+ if (x > x1) x1 = x;
+ if (y < y0$2) y0$2 = y;
+ if (y > y1) y1 = y;
+}
+
+// TODO Enforce positive area for exterior, negative area for interior?
+
+var X0 = 0,
+ Y0 = 0,
+ Z0 = 0,
+ X1 = 0,
+ Y1 = 0,
+ Z1 = 0,
+ X2 = 0,
+ Y2 = 0,
+ Z2 = 0,
+ x00$1,
+ y00$1,
+ x0$1,
+ y0$1;
+
+var centroidStream = {
+ point: centroidPoint,
+ lineStart: centroidLineStart,
+ lineEnd: centroidLineEnd,
+ polygonStart: function() {
+ centroidStream.lineStart = centroidRingStart;
+ centroidStream.lineEnd = centroidRingEnd;
+ },
+ polygonEnd: function() {
+ centroidStream.point = centroidPoint;
+ centroidStream.lineStart = centroidLineStart;
+ centroidStream.lineEnd = centroidLineEnd;
+ },
+ result: function() {
+ var centroid = Z2 ? [X2 / Z2, Y2 / Z2]
+ : Z1 ? [X1 / Z1, Y1 / Z1]
+ : Z0 ? [X0 / Z0, Y0 / Z0]
+ : [NaN, NaN];
+ X0 = Y0 = Z0 =
+ X1 = Y1 = Z1 =
+ X2 = Y2 = Z2 = 0;
+ return centroid;
+ }
+};
+
+function centroidPoint(x, y) {
+ X0 += x;
+ Y0 += y;
+ ++Z0;
+}
+
+function centroidLineStart() {
+ centroidStream.point = centroidPointFirstLine;
+}
+
+function centroidPointFirstLine(x, y) {
+ centroidStream.point = centroidPointLine;
+ centroidPoint(x0$1 = x, y0$1 = y);
+}
+
+function centroidPointLine(x, y) {
+ var dx = x - x0$1, dy = y - y0$1, z = sqrt(dx * dx + dy * dy);
+ X1 += z * (x0$1 + x) / 2;
+ Y1 += z * (y0$1 + y) / 2;
+ Z1 += z;
+ centroidPoint(x0$1 = x, y0$1 = y);
+}
+
+function centroidLineEnd() {
+ centroidStream.point = centroidPoint;
+}
+
+function centroidRingStart() {
+ centroidStream.point = centroidPointFirstRing;
+}
+
+function centroidRingEnd() {
+ centroidPointRing(x00$1, y00$1);
+}
+
+function centroidPointFirstRing(x, y) {
+ centroidStream.point = centroidPointRing;
+ centroidPoint(x00$1 = x0$1 = x, y00$1 = y0$1 = y);
+}
+
+function centroidPointRing(x, y) {
+ var dx = x - x0$1,
+ dy = y - y0$1,
+ z = sqrt(dx * dx + dy * dy);
+
+ X1 += z * (x0$1 + x) / 2;
+ Y1 += z * (y0$1 + y) / 2;
+ Z1 += z;
+
+ z = y0$1 * x - x0$1 * y;
+ X2 += z * (x0$1 + x);
+ Y2 += z * (y0$1 + y);
+ Z2 += z * 3;
+ centroidPoint(x0$1 = x, y0$1 = y);
+}
+
+function PathContext(context) {
+ this._context = context;
+}
+
+PathContext.prototype = {
+ _radius: 4.5,
+ pointRadius: function(_) {
+ return this._radius = _, this;
+ },
+ polygonStart: function() {
+ this._line = 0;
+ },
+ polygonEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line === 0) this._context.closePath();
+ this._point = NaN;
+ },
+ point: function(x, y) {
+ switch (this._point) {
+ case 0: {
+ this._context.moveTo(x, y);
+ this._point = 1;
+ break;
+ }
+ case 1: {
+ this._context.lineTo(x, y);
+ break;
+ }
+ default: {
+ this._context.moveTo(x + this._radius, y);
+ this._context.arc(x, y, this._radius, 0, tau);
+ break;
+ }
+ }
+ },
+ result: noop
+};
+
+var lengthSum = new d3Array.Adder(),
+ lengthRing,
+ x00,
+ y00,
+ x0,
+ y0;
+
+var lengthStream = {
+ point: noop,
+ lineStart: function() {
+ lengthStream.point = lengthPointFirst;
+ },
+ lineEnd: function() {
+ if (lengthRing) lengthPoint(x00, y00);
+ lengthStream.point = noop;
+ },
+ polygonStart: function() {
+ lengthRing = true;
+ },
+ polygonEnd: function() {
+ lengthRing = null;
+ },
+ result: function() {
+ var length = +lengthSum;
+ lengthSum = new d3Array.Adder();
+ return length;
+ }
+};
+
+function lengthPointFirst(x, y) {
+ lengthStream.point = lengthPoint;
+ x00 = x0 = x, y00 = y0 = y;
+}
+
+function lengthPoint(x, y) {
+ x0 -= x, y0 -= y;
+ lengthSum.add(sqrt(x0 * x0 + y0 * y0));
+ x0 = x, y0 = y;
+}
+
+function PathString() {
+ this._string = [];
+}
+
+PathString.prototype = {
+ _radius: 4.5,
+ _circle: circle(4.5),
+ pointRadius: function(_) {
+ if ((_ = +_) !== this._radius) this._radius = _, this._circle = null;
+ return this;
+ },
+ polygonStart: function() {
+ this._line = 0;
+ },
+ polygonEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line === 0) this._string.push("Z");
+ this._point = NaN;
+ },
+ point: function(x, y) {
+ switch (this._point) {
+ case 0: {
+ this._string.push("M", x, ",", y);
+ this._point = 1;
+ break;
+ }
+ case 1: {
+ this._string.push("L", x, ",", y);
+ break;
+ }
+ default: {
+ if (this._circle == null) this._circle = circle(this._radius);
+ this._string.push("M", x, ",", y, this._circle);
+ break;
+ }
+ }
+ },
+ result: function() {
+ if (this._string.length) {
+ var result = this._string.join("");
+ this._string = [];
+ return result;
+ } else {
+ return null;
+ }
+ }
+};
+
+function circle(radius) {
+ return "m0," + radius
+ + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius
+ + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius
+ + "z";
+}
+
+function index(projection, context) {
+ var pointRadius = 4.5,
+ projectionStream,
+ contextStream;
+
+ function path(object) {
+ if (object) {
+ if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
+ geoStream(object, projectionStream(contextStream));
+ }
+ return contextStream.result();
+ }
+
+ path.area = function(object) {
+ geoStream(object, projectionStream(areaStream));
+ return areaStream.result();
+ };
+
+ path.measure = function(object) {
+ geoStream(object, projectionStream(lengthStream));
+ return lengthStream.result();
+ };
+
+ path.bounds = function(object) {
+ geoStream(object, projectionStream(boundsStream));
+ return boundsStream.result();
+ };
+
+ path.centroid = function(object) {
+ geoStream(object, projectionStream(centroidStream));
+ return centroidStream.result();
+ };
+
+ path.projection = function(_) {
+ return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$1) : (projection = _).stream, path) : projection;
+ };
+
+ path.context = function(_) {
+ if (!arguments.length) return context;
+ contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _);
+ if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
+ return path;
+ };
+
+ path.pointRadius = function(_) {
+ if (!arguments.length) return pointRadius;
+ pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
+ return path;
+ };
+
+ return path.projection(projection).context(context);
+}
+
+function transform(methods) {
+ return {
+ stream: transformer(methods)
+ };
+}
+
+function transformer(methods) {
+ return function(stream) {
+ var s = new TransformStream;
+ for (var key in methods) s[key] = methods[key];
+ s.stream = stream;
+ return s;
+ };
+}
+
+function TransformStream() {}
+
+TransformStream.prototype = {
+ constructor: TransformStream,
+ point: function(x, y) { this.stream.point(x, y); },
+ sphere: function() { this.stream.sphere(); },
+ lineStart: function() { this.stream.lineStart(); },
+ lineEnd: function() { this.stream.lineEnd(); },
+ polygonStart: function() { this.stream.polygonStart(); },
+ polygonEnd: function() { this.stream.polygonEnd(); }
+};
+
+function fit(projection, fitBounds, object) {
+ var clip = projection.clipExtent && projection.clipExtent();
+ projection.scale(150).translate([0, 0]);
+ if (clip != null) projection.clipExtent(null);
+ geoStream(object, projection.stream(boundsStream));
+ fitBounds(boundsStream.result());
+ if (clip != null) projection.clipExtent(clip);
+ return projection;
+}
+
+function fitExtent(projection, extent, object) {
+ return fit(projection, function(b) {
+ var w = extent[1][0] - extent[0][0],
+ h = extent[1][1] - extent[0][1],
+ k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])),
+ x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2,
+ y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2;
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
+
+function fitSize(projection, size, object) {
+ return fitExtent(projection, [[0, 0], size], object);
+}
+
+function fitWidth(projection, width, object) {
+ return fit(projection, function(b) {
+ var w = +width,
+ k = w / (b[1][0] - b[0][0]),
+ x = (w - k * (b[1][0] + b[0][0])) / 2,
+ y = -k * b[0][1];
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
+
+function fitHeight(projection, height, object) {
+ return fit(projection, function(b) {
+ var h = +height,
+ k = h / (b[1][1] - b[0][1]),
+ x = -k * b[0][0],
+ y = (h - k * (b[1][1] + b[0][1])) / 2;
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
+
+var maxDepth = 16, // maximum depth of subdivision
+ cosMinDistance = cos(30 * radians); // cos(minimum angular distance)
+
+function resample(project, delta2) {
+ return +delta2 ? resample$1(project, delta2) : resampleNone(project);
+}
+
+function resampleNone(project) {
+ return transformer({
+ point: function(x, y) {
+ x = project(x, y);
+ this.stream.point(x[0], x[1]);
+ }
+ });
+}
+
+function resample$1(project, delta2) {
+
+ function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) {
+ var dx = x1 - x0,
+ dy = y1 - y0,
+ d2 = dx * dx + dy * dy;
+ if (d2 > 4 * delta2 && depth--) {
+ var a = a0 + a1,
+ b = b0 + b1,
+ c = c0 + c1,
+ m = sqrt(a * a + b * b + c * c),
+ phi2 = asin(c /= m),
+ lambda2 = abs(abs(c) - 1) < epsilon || abs(lambda0 - lambda1) < epsilon ? (lambda0 + lambda1) / 2 : atan2(b, a),
+ p = project(lambda2, phi2),
+ x2 = p[0],
+ y2 = p[1],
+ dx2 = x2 - x0,
+ dy2 = y2 - y0,
+ dz = dy * dx2 - dx * dy2;
+ if (dz * dz / d2 > delta2 // perpendicular projected distance
+ || abs((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end
+ || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream);
+ stream.point(x2, y2);
+ resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream);
+ }
+ }
+ }
+ return function(stream) {
+ var lambda00, x00, y00, a00, b00, c00, // first point
+ lambda0, x0, y0, a0, b0, c0; // previous point
+
+ var resampleStream = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; },
+ polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; }
+ };
+
+ function point(x, y) {
+ x = project(x, y);
+ stream.point(x[0], x[1]);
+ }
+
+ function lineStart() {
+ x0 = NaN;
+ resampleStream.point = linePoint;
+ stream.lineStart();
+ }
+
+ function linePoint(lambda, phi) {
+ var c = cartesian([lambda, phi]), p = project(lambda, phi);
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
+ stream.point(x0, y0);
+ }
+
+ function lineEnd() {
+ resampleStream.point = point;
+ stream.lineEnd();
+ }
+
+ function ringStart() {
+ lineStart();
+ resampleStream.point = ringPoint;
+ resampleStream.lineEnd = ringEnd;
+ }
+
+ function ringPoint(lambda, phi) {
+ linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
+ resampleStream.point = linePoint;
+ }
+
+ function ringEnd() {
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream);
+ resampleStream.lineEnd = lineEnd;
+ lineEnd();
+ }
+
+ return resampleStream;
+ };
+}
+
+var transformRadians = transformer({
+ point: function(x, y) {
+ this.stream.point(x * radians, y * radians);
+ }
+});
+
+function transformRotate(rotate) {
+ return transformer({
+ point: function(x, y) {
+ var r = rotate(x, y);
+ return this.stream.point(r[0], r[1]);
+ }
+ });
+}
+
+function scaleTranslate(k, dx, dy, sx, sy) {
+ function transform(x, y) {
+ x *= sx; y *= sy;
+ return [dx + k * x, dy - k * y];
+ }
+ transform.invert = function(x, y) {
+ return [(x - dx) / k * sx, (dy - y) / k * sy];
+ };
+ return transform;
+}
+
+function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) {
+ if (!alpha) return scaleTranslate(k, dx, dy, sx, sy);
+ var cosAlpha = cos(alpha),
+ sinAlpha = sin(alpha),
+ a = cosAlpha * k,
+ b = sinAlpha * k,
+ ai = cosAlpha / k,
+ bi = sinAlpha / k,
+ ci = (sinAlpha * dy - cosAlpha * dx) / k,
+ fi = (sinAlpha * dx + cosAlpha * dy) / k;
+ function transform(x, y) {
+ x *= sx; y *= sy;
+ return [a * x - b * y + dx, dy - b * x - a * y];
+ }
+ transform.invert = function(x, y) {
+ return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)];
+ };
+ return transform;
+}
+
+function projection(project) {
+ return projectionMutator(function() { return project; })();
+}
+
+function projectionMutator(projectAt) {
+ var project,
+ k = 150, // scale
+ x = 480, y = 250, // translate
+ lambda = 0, phi = 0, // center
+ deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate
+ alpha = 0, // post-rotate angle
+ sx = 1, // reflectX
+ sy = 1, // reflectX
+ theta = null, preclip = clipAntimeridian, // pre-clip angle
+ x0 = null, y0, x1, y1, postclip = identity$1, // post-clip extent
+ delta2 = 0.5, // precision
+ projectResample,
+ projectTransform,
+ projectRotateTransform,
+ cache,
+ cacheStream;
+
+ function projection(point) {
+ return projectRotateTransform(point[0] * radians, point[1] * radians);
+ }
+
+ function invert(point) {
+ point = projectRotateTransform.invert(point[0], point[1]);
+ return point && [point[0] * degrees, point[1] * degrees];
+ }
+
+ projection.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream)))));
+ };
+
+ projection.preclip = function(_) {
+ return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip;
+ };
+
+ projection.postclip = function(_) {
+ return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip;
+ };
+
+ projection.clipAngle = function(_) {
+ return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees;
+ };
+
+ projection.clipExtent = function(_) {
+ return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$1) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+
+ projection.scale = function(_) {
+ return arguments.length ? (k = +_, recenter()) : k;
+ };
+
+ projection.translate = function(_) {
+ return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y];
+ };
+
+ projection.center = function(_) {
+ return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees, phi * degrees];
+ };
+
+ projection.rotate = function(_) {
+ return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees, deltaPhi * degrees, deltaGamma * degrees];
+ };
+
+ projection.angle = function(_) {
+ return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees;
+ };
+
+ projection.reflectX = function(_) {
+ return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0;
+ };
+
+ projection.reflectY = function(_) {
+ return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0;
+ };
+
+ projection.precision = function(_) {
+ return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt(delta2);
+ };
+
+ projection.fitExtent = function(extent, object) {
+ return fitExtent(projection, extent, object);
+ };
+
+ projection.fitSize = function(size, object) {
+ return fitSize(projection, size, object);
+ };
+
+ projection.fitWidth = function(width, object) {
+ return fitWidth(projection, width, object);
+ };
+
+ projection.fitHeight = function(height, object) {
+ return fitHeight(projection, height, object);
+ };
+
+ function recenter() {
+ var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)),
+ transform = scaleTranslateRotate(k, x - center[0], y - center[1], sx, sy, alpha);
+ rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma);
+ projectTransform = compose(project, transform);
+ projectRotateTransform = compose(rotate, projectTransform);
+ projectResample = resample(projectTransform, delta2);
+ return reset();
+ }
+
+ function reset() {
+ cache = cacheStream = null;
+ return projection;
+ }
+
+ return function() {
+ project = projectAt.apply(this, arguments);
+ projection.invert = project.invert && invert;
+ return recenter();
+ };
+}
+
+function conicProjection(projectAt) {
+ var phi0 = 0,
+ phi1 = pi / 3,
+ m = projectionMutator(projectAt),
+ p = m(phi0, phi1);
+
+ p.parallels = function(_) {
+ return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees, phi1 * degrees];
+ };
+
+ return p;
+}
+
+function cylindricalEqualAreaRaw(phi0) {
+ var cosPhi0 = cos(phi0);
+
+ function forward(lambda, phi) {
+ return [lambda * cosPhi0, sin(phi) / cosPhi0];
+ }
+
+ forward.invert = function(x, y) {
+ return [x / cosPhi0, asin(y * cosPhi0)];
+ };
+
+ return forward;
+}
+
+function conicEqualAreaRaw(y0, y1) {
+ var sy0 = sin(y0), n = (sy0 + sin(y1)) / 2;
+
+ // Are the parallels symmetrical around the Equator?
+ if (abs(n) < epsilon) return cylindricalEqualAreaRaw(y0);
+
+ var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt(c) / n;
+
+ function project(x, y) {
+ var r = sqrt(c - 2 * n * sin(y)) / n;
+ return [r * sin(x *= n), r0 - r * cos(x)];
+ }
+
+ project.invert = function(x, y) {
+ var r0y = r0 - y,
+ l = atan2(x, abs(r0y)) * sign(r0y);
+ if (r0y * n < 0)
+ l -= pi * sign(x) * sign(r0y);
+ return [l / n, asin((c - (x * x + r0y * r0y) * n * n) / (2 * n))];
+ };
+
+ return project;
+}
+
+function conicEqualArea() {
+ return conicProjection(conicEqualAreaRaw)
+ .scale(155.424)
+ .center([0, 33.6442]);
+}
+
+function albers() {
+ return conicEqualArea()
+ .parallels([29.5, 45.5])
+ .scale(1070)
+ .translate([480, 250])
+ .rotate([96, 0])
+ .center([-0.6, 38.7]);
+}
+
+// The projections must have mutually exclusive clip regions on the sphere,
+// as this will avoid emitting interleaving lines and polygons.
+function multiplex(streams) {
+ var n = streams.length;
+ return {
+ point: function(x, y) { var i = -1; while (++i < n) streams[i].point(x, y); },
+ sphere: function() { var i = -1; while (++i < n) streams[i].sphere(); },
+ lineStart: function() { var i = -1; while (++i < n) streams[i].lineStart(); },
+ lineEnd: function() { var i = -1; while (++i < n) streams[i].lineEnd(); },
+ polygonStart: function() { var i = -1; while (++i < n) streams[i].polygonStart(); },
+ polygonEnd: function() { var i = -1; while (++i < n) streams[i].polygonEnd(); }
+ };
+}
+
+// A composite projection for the United States, configured by default for
+// 960×500. The projection also works quite well at 960×600 if you change the
+// scale to 1285 and adjust the translate accordingly. The set of standard
+// parallels for each region comes from USGS, which is published here:
+// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers
+function albersUsa() {
+ var cache,
+ cacheStream,
+ lower48 = albers(), lower48Point,
+ alaska = conicEqualArea().rotate([154, 0]).center([-2, 58.5]).parallels([55, 65]), alaskaPoint, // EPSG:3338
+ hawaii = conicEqualArea().rotate([157, 0]).center([-3, 19.9]).parallels([8, 18]), hawaiiPoint, // ESRI:102007
+ point, pointStream = {point: function(x, y) { point = [x, y]; }};
+
+ function albersUsa(coordinates) {
+ var x = coordinates[0], y = coordinates[1];
+ return point = null,
+ (lower48Point.point(x, y), point)
+ || (alaskaPoint.point(x, y), point)
+ || (hawaiiPoint.point(x, y), point);
+ }
+
+ albersUsa.invert = function(coordinates) {
+ var k = lower48.scale(),
+ t = lower48.translate(),
+ x = (coordinates[0] - t[0]) / k,
+ y = (coordinates[1] - t[1]) / k;
+ return (y >= 0.120 && y < 0.234 && x >= -0.425 && x < -0.214 ? alaska
+ : y >= 0.166 && y < 0.234 && x >= -0.214 && x < -0.115 ? hawaii
+ : lower48).invert(coordinates);
+ };
+
+ albersUsa.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = multiplex([lower48.stream(cacheStream = stream), alaska.stream(stream), hawaii.stream(stream)]);
+ };
+
+ albersUsa.precision = function(_) {
+ if (!arguments.length) return lower48.precision();
+ lower48.precision(_), alaska.precision(_), hawaii.precision(_);
+ return reset();
+ };
+
+ albersUsa.scale = function(_) {
+ if (!arguments.length) return lower48.scale();
+ lower48.scale(_), alaska.scale(_ * 0.35), hawaii.scale(_);
+ return albersUsa.translate(lower48.translate());
+ };
+
+ albersUsa.translate = function(_) {
+ if (!arguments.length) return lower48.translate();
+ var k = lower48.scale(), x = +_[0], y = +_[1];
+
+ lower48Point = lower48
+ .translate(_)
+ .clipExtent([[x - 0.455 * k, y - 0.238 * k], [x + 0.455 * k, y + 0.238 * k]])
+ .stream(pointStream);
+
+ alaskaPoint = alaska
+ .translate([x - 0.307 * k, y + 0.201 * k])
+ .clipExtent([[x - 0.425 * k + epsilon, y + 0.120 * k + epsilon], [x - 0.214 * k - epsilon, y + 0.234 * k - epsilon]])
+ .stream(pointStream);
+
+ hawaiiPoint = hawaii
+ .translate([x - 0.205 * k, y + 0.212 * k])
+ .clipExtent([[x - 0.214 * k + epsilon, y + 0.166 * k + epsilon], [x - 0.115 * k - epsilon, y + 0.234 * k - epsilon]])
+ .stream(pointStream);
+
+ return reset();
+ };
+
+ albersUsa.fitExtent = function(extent, object) {
+ return fitExtent(albersUsa, extent, object);
+ };
+
+ albersUsa.fitSize = function(size, object) {
+ return fitSize(albersUsa, size, object);
+ };
+
+ albersUsa.fitWidth = function(width, object) {
+ return fitWidth(albersUsa, width, object);
+ };
+
+ albersUsa.fitHeight = function(height, object) {
+ return fitHeight(albersUsa, height, object);
+ };
+
+ function reset() {
+ cache = cacheStream = null;
+ return albersUsa;
+ }
+
+ return albersUsa.scale(1070);
+}
+
+function azimuthalRaw(scale) {
+ return function(x, y) {
+ var cx = cos(x),
+ cy = cos(y),
+ k = scale(cx * cy);
+ if (k === Infinity) return [2, 0];
+ return [
+ k * cy * sin(x),
+ k * sin(y)
+ ];
+ }
+}
+
+function azimuthalInvert(angle) {
+ return function(x, y) {
+ var z = sqrt(x * x + y * y),
+ c = angle(z),
+ sc = sin(c),
+ cc = cos(c);
+ return [
+ atan2(x * sc, z * cc),
+ asin(z && y * sc / z)
+ ];
+ }
+}
+
+var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) {
+ return sqrt(2 / (1 + cxcy));
+});
+
+azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) {
+ return 2 * asin(z / 2);
+});
+
+function azimuthalEqualArea() {
+ return projection(azimuthalEqualAreaRaw)
+ .scale(124.75)
+ .clipAngle(180 - 1e-3);
+}
+
+var azimuthalEquidistantRaw = azimuthalRaw(function(c) {
+ return (c = acos(c)) && c / sin(c);
+});
+
+azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) {
+ return z;
+});
+
+function azimuthalEquidistant() {
+ return projection(azimuthalEquidistantRaw)
+ .scale(79.4188)
+ .clipAngle(180 - 1e-3);
+}
+
+function mercatorRaw(lambda, phi) {
+ return [lambda, log(tan((halfPi + phi) / 2))];
+}
+
+mercatorRaw.invert = function(x, y) {
+ return [x, 2 * atan(exp(y)) - halfPi];
+};
+
+function mercator() {
+ return mercatorProjection(mercatorRaw)
+ .scale(961 / tau);
+}
+
+function mercatorProjection(project) {
+ var m = projection(project),
+ center = m.center,
+ scale = m.scale,
+ translate = m.translate,
+ clipExtent = m.clipExtent,
+ x0 = null, y0, x1, y1; // clip extent
+
+ m.scale = function(_) {
+ return arguments.length ? (scale(_), reclip()) : scale();
+ };
+
+ m.translate = function(_) {
+ return arguments.length ? (translate(_), reclip()) : translate();
+ };
+
+ m.center = function(_) {
+ return arguments.length ? (center(_), reclip()) : center();
+ };
+
+ m.clipExtent = function(_) {
+ return arguments.length ? ((_ == null ? x0 = y0 = x1 = y1 = null : (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1])), reclip()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+
+ function reclip() {
+ var k = pi * scale(),
+ t = m(rotation(m.rotate()).invert([0, 0]));
+ return clipExtent(x0 == null
+ ? [[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]] : project === mercatorRaw
+ ? [[Math.max(t[0] - k, x0), y0], [Math.min(t[0] + k, x1), y1]]
+ : [[x0, Math.max(t[1] - k, y0)], [x1, Math.min(t[1] + k, y1)]]);
+ }
+
+ return reclip();
+}
+
+function tany(y) {
+ return tan((halfPi + y) / 2);
+}
+
+function conicConformalRaw(y0, y1) {
+ var cy0 = cos(y0),
+ n = y0 === y1 ? sin(y0) : log(cy0 / cos(y1)) / log(tany(y1) / tany(y0)),
+ f = cy0 * pow(tany(y0), n) / n;
+
+ if (!n) return mercatorRaw;
+
+ function project(x, y) {
+ if (f > 0) { if (y < -halfPi + epsilon) y = -halfPi + epsilon; }
+ else { if (y > halfPi - epsilon) y = halfPi - epsilon; }
+ var r = f / pow(tany(y), n);
+ return [r * sin(n * x), f - r * cos(n * x)];
+ }
+
+ project.invert = function(x, y) {
+ var fy = f - y, r = sign(n) * sqrt(x * x + fy * fy),
+ l = atan2(x, abs(fy)) * sign(fy);
+ if (fy * n < 0)
+ l -= pi * sign(x) * sign(fy);
+ return [l / n, 2 * atan(pow(f / r, 1 / n)) - halfPi];
+ };
+
+ return project;
+}
+
+function conicConformal() {
+ return conicProjection(conicConformalRaw)
+ .scale(109.5)
+ .parallels([30, 30]);
+}
+
+function equirectangularRaw(lambda, phi) {
+ return [lambda, phi];
+}
+
+equirectangularRaw.invert = equirectangularRaw;
+
+function equirectangular() {
+ return projection(equirectangularRaw)
+ .scale(152.63);
+}
+
+function conicEquidistantRaw(y0, y1) {
+ var cy0 = cos(y0),
+ n = y0 === y1 ? sin(y0) : (cy0 - cos(y1)) / (y1 - y0),
+ g = cy0 / n + y0;
+
+ if (abs(n) < epsilon) return equirectangularRaw;
+
+ function project(x, y) {
+ var gy = g - y, nx = n * x;
+ return [gy * sin(nx), g - gy * cos(nx)];
+ }
+
+ project.invert = function(x, y) {
+ var gy = g - y,
+ l = atan2(x, abs(gy)) * sign(gy);
+ if (gy * n < 0)
+ l -= pi * sign(x) * sign(gy);
+ return [l / n, g - sign(n) * sqrt(x * x + gy * gy)];
+ };
+
+ return project;
+}
+
+function conicEquidistant() {
+ return conicProjection(conicEquidistantRaw)
+ .scale(131.154)
+ .center([0, 13.9389]);
+}
+
+var A1 = 1.340264,
+ A2 = -0.081106,
+ A3 = 0.000893,
+ A4 = 0.003796,
+ M = sqrt(3) / 2,
+ iterations = 12;
+
+function equalEarthRaw(lambda, phi) {
+ var l = asin(M * sin(phi)), l2 = l * l, l6 = l2 * l2 * l2;
+ return [
+ lambda * cos(l) / (M * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2))),
+ l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2))
+ ];
+}
+
+equalEarthRaw.invert = function(x, y) {
+ var l = y, l2 = l * l, l6 = l2 * l2 * l2;
+ for (var i = 0, delta, fy, fpy; i < iterations; ++i) {
+ fy = l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) - y;
+ fpy = A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2);
+ l -= delta = fy / fpy, l2 = l * l, l6 = l2 * l2 * l2;
+ if (abs(delta) < epsilon2) break;
+ }
+ return [
+ M * x * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2)) / cos(l),
+ asin(sin(l) / M)
+ ];
+};
+
+function equalEarth() {
+ return projection(equalEarthRaw)
+ .scale(177.158);
+}
+
+function gnomonicRaw(x, y) {
+ var cy = cos(y), k = cos(x) * cy;
+ return [cy * sin(x) / k, sin(y) / k];
+}
+
+gnomonicRaw.invert = azimuthalInvert(atan);
+
+function gnomonic() {
+ return projection(gnomonicRaw)
+ .scale(144.049)
+ .clipAngle(60);
+}
+
+function identity() {
+ var k = 1, tx = 0, ty = 0, sx = 1, sy = 1, // scale, translate and reflect
+ alpha = 0, ca, sa, // angle
+ x0 = null, y0, x1, y1, // clip extent
+ kx = 1, ky = 1,
+ transform = transformer({
+ point: function(x, y) {
+ var p = projection([x, y]);
+ this.stream.point(p[0], p[1]);
+ }
+ }),
+ postclip = identity$1,
+ cache,
+ cacheStream;
+
+ function reset() {
+ kx = k * sx;
+ ky = k * sy;
+ cache = cacheStream = null;
+ return projection;
+ }
+
+ function projection (p) {
+ var x = p[0] * kx, y = p[1] * ky;
+ if (alpha) {
+ var t = y * ca - x * sa;
+ x = x * ca + y * sa;
+ y = t;
+ }
+ return [x + tx, y + ty];
+ }
+ projection.invert = function(p) {
+ var x = p[0] - tx, y = p[1] - ty;
+ if (alpha) {
+ var t = y * ca + x * sa;
+ x = x * ca - y * sa;
+ y = t;
+ }
+ return [x / kx, y / ky];
+ };
+ projection.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = transform(postclip(cacheStream = stream));
+ };
+ projection.postclip = function(_) {
+ return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip;
+ };
+ projection.clipExtent = function(_) {
+ return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$1) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+ projection.scale = function(_) {
+ return arguments.length ? (k = +_, reset()) : k;
+ };
+ projection.translate = function(_) {
+ return arguments.length ? (tx = +_[0], ty = +_[1], reset()) : [tx, ty];
+ };
+ projection.angle = function(_) {
+ return arguments.length ? (alpha = _ % 360 * radians, sa = sin(alpha), ca = cos(alpha), reset()) : alpha * degrees;
+ };
+ projection.reflectX = function(_) {
+ return arguments.length ? (sx = _ ? -1 : 1, reset()) : sx < 0;
+ };
+ projection.reflectY = function(_) {
+ return arguments.length ? (sy = _ ? -1 : 1, reset()) : sy < 0;
+ };
+ projection.fitExtent = function(extent, object) {
+ return fitExtent(projection, extent, object);
+ };
+ projection.fitSize = function(size, object) {
+ return fitSize(projection, size, object);
+ };
+ projection.fitWidth = function(width, object) {
+ return fitWidth(projection, width, object);
+ };
+ projection.fitHeight = function(height, object) {
+ return fitHeight(projection, height, object);
+ };
+
+ return projection;
+}
+
+function naturalEarth1Raw(lambda, phi) {
+ var phi2 = phi * phi, phi4 = phi2 * phi2;
+ return [
+ lambda * (0.8707 - 0.131979 * phi2 + phi4 * (-0.013791 + phi4 * (0.003971 * phi2 - 0.001529 * phi4))),
+ phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4)))
+ ];
+}
+
+naturalEarth1Raw.invert = function(x, y) {
+ var phi = y, i = 25, delta;
+ do {
+ var phi2 = phi * phi, phi4 = phi2 * phi2;
+ phi -= delta = (phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4))) - y) /
+ (1.007226 + phi2 * (0.015085 * 3 + phi4 * (-0.044475 * 7 + 0.028874 * 9 * phi2 - 0.005916 * 11 * phi4)));
+ } while (abs(delta) > epsilon && --i > 0);
+ return [
+ x / (0.8707 + (phi2 = phi * phi) * (-0.131979 + phi2 * (-0.013791 + phi2 * phi2 * phi2 * (0.003971 - 0.001529 * phi2)))),
+ phi
+ ];
+};
+
+function naturalEarth1() {
+ return projection(naturalEarth1Raw)
+ .scale(175.295);
+}
+
+function orthographicRaw(x, y) {
+ return [cos(y) * sin(x), sin(y)];
+}
+
+orthographicRaw.invert = azimuthalInvert(asin);
+
+function orthographic() {
+ return projection(orthographicRaw)
+ .scale(249.5)
+ .clipAngle(90 + epsilon);
+}
+
+function stereographicRaw(x, y) {
+ var cy = cos(y), k = 1 + cos(x) * cy;
+ return [cy * sin(x) / k, sin(y) / k];
+}
+
+stereographicRaw.invert = azimuthalInvert(function(z) {
+ return 2 * atan(z);
+});
+
+function stereographic() {
+ return projection(stereographicRaw)
+ .scale(250)
+ .clipAngle(142);
+}
+
+function transverseMercatorRaw(lambda, phi) {
+ return [log(tan((halfPi + phi) / 2)), -lambda];
+}
+
+transverseMercatorRaw.invert = function(x, y) {
+ return [-y, 2 * atan(exp(x)) - halfPi];
+};
+
+function transverseMercator() {
+ var m = mercatorProjection(transverseMercatorRaw),
+ center = m.center,
+ rotate = m.rotate;
+
+ m.center = function(_) {
+ return arguments.length ? center([-_[1], _[0]]) : (_ = center(), [_[1], -_[0]]);
+ };
+
+ m.rotate = function(_) {
+ return arguments.length ? rotate([_[0], _[1], _.length > 2 ? _[2] + 90 : 90]) : (_ = rotate(), [_[0], _[1], _[2] - 90]);
+ };
+
+ return rotate([0, 0, 90])
+ .scale(159.155);
+}
+
+exports.geoAlbers = albers;
+exports.geoAlbersUsa = albersUsa;
+exports.geoArea = area;
+exports.geoAzimuthalEqualArea = azimuthalEqualArea;
+exports.geoAzimuthalEqualAreaRaw = azimuthalEqualAreaRaw;
+exports.geoAzimuthalEquidistant = azimuthalEquidistant;
+exports.geoAzimuthalEquidistantRaw = azimuthalEquidistantRaw;
+exports.geoBounds = bounds;
+exports.geoCentroid = centroid;
+exports.geoCircle = circle$1;
+exports.geoClipAntimeridian = clipAntimeridian;
+exports.geoClipCircle = clipCircle;
+exports.geoClipExtent = extent;
+exports.geoClipRectangle = clipRectangle;
+exports.geoConicConformal = conicConformal;
+exports.geoConicConformalRaw = conicConformalRaw;
+exports.geoConicEqualArea = conicEqualArea;
+exports.geoConicEqualAreaRaw = conicEqualAreaRaw;
+exports.geoConicEquidistant = conicEquidistant;
+exports.geoConicEquidistantRaw = conicEquidistantRaw;
+exports.geoContains = contains;
+exports.geoDistance = distance;
+exports.geoEqualEarth = equalEarth;
+exports.geoEqualEarthRaw = equalEarthRaw;
+exports.geoEquirectangular = equirectangular;
+exports.geoEquirectangularRaw = equirectangularRaw;
+exports.geoGnomonic = gnomonic;
+exports.geoGnomonicRaw = gnomonicRaw;
+exports.geoGraticule = graticule;
+exports.geoGraticule10 = graticule10;
+exports.geoIdentity = identity;
+exports.geoInterpolate = interpolate;
+exports.geoLength = length;
+exports.geoMercator = mercator;
+exports.geoMercatorRaw = mercatorRaw;
+exports.geoNaturalEarth1 = naturalEarth1;
+exports.geoNaturalEarth1Raw = naturalEarth1Raw;
+exports.geoOrthographic = orthographic;
+exports.geoOrthographicRaw = orthographicRaw;
+exports.geoPath = index;
+exports.geoProjection = projection;
+exports.geoProjectionMutator = projectionMutator;
+exports.geoRotation = rotation;
+exports.geoStereographic = stereographic;
+exports.geoStereographicRaw = stereographicRaw;
+exports.geoStream = geoStream;
+exports.geoTransform = transform;
+exports.geoTransverseMercator = transverseMercator;
+exports.geoTransverseMercatorRaw = transverseMercatorRaw;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-geo/dist/d3-geo.min.js b/node_modules/d3-geo/dist/d3-geo.min.js
new file mode 100644
index 00000000..2326b243
--- /dev/null
+++ b/node_modules/d3-geo/dist/d3-geo.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-geo/ v3.0.1 Copyright 2010-2021 Mike Bostock, 2008-2012 Charles Karney
+!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-array")):"function"==typeof define&&define.amd?define(["exports","d3-array"],t):t((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{},n.d3)}(this,(function(n,t){"use strict";var r=1e-6,e=1e-12,i=Math.PI,o=i/2,u=i/4,a=2*i,c=180/i,l=i/180,f=Math.abs,p=Math.atan,s=Math.atan2,h=Math.cos,g=Math.ceil,v=Math.exp,d=Math.hypot,E=Math.log,y=Math.pow,S=Math.sin,m=Math.sign||function(n){return n>0?1:n<0?-1:0},M=Math.sqrt,x=Math.tan;function w(n){return n>1?0:n<-1?i:Math.acos(n)}function _(n){return n>1?o:n<-1?-o:Math.asin(n)}function N(n){return(n=S(n/2))*n}function A(){}function R(n,t){n&&P.hasOwnProperty(n.type)&&P[n.type](n,t)}var C={Feature:function(n,t){R(n.geometry,t)},FeatureCollection:function(n,t){for(var r=n.features,e=-1,i=r.length;++e=0?1:-1,i=e*r,o=h(t=(t*=l)/2+u),a=S(t),c=G*a,f=O*o+c*h(i),p=c*e*S(i);J.add(s(p,f)),T=n,O=o,G=a}function rn(n){return[s(n[1],n[0]),_(n[2])]}function 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diff --git a/node_modules/d3-geo/package.json b/node_modules/d3-geo/package.json
new file mode 100644
index 00000000..380aebc8
--- /dev/null
+++ b/node_modules/d3-geo/package.json
@@ -0,0 +1,85 @@
+{
+ "_from": "d3-geo@3",
+ "_id": "d3-geo@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-Wt23xBych5tSy9IYAM1FR2rWIBFWa52B/oF/GYe5zbdHrg08FU8+BuI6X4PvTwPDdqdAdq04fuWJpELtsaEjeA==",
+ "_location": "/d3-geo",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-geo@3",
+ "name": "d3-geo",
+ "escapedName": "d3-geo",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-geo/-/d3-geo-3.0.1.tgz",
+ "_shasum": "4f92362fd8685d93e3b1fae0fd97dc8980b1ed7e",
+ "_spec": "d3-geo@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "https://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-geo/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-array": "2.5.0 - 3"
+ },
+ "deprecated": false,
+ "description": "Shapes and calculators for spherical coordinates.",
+ "devDependencies": {
+ "canvas": "2",
+ "d3-format": "1 - 3",
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7",
+ "topojson-client": "3",
+ "world-atlas": "1"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-geo.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-geo/",
+ "jsdelivr": "dist/d3-geo.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "geo",
+ "maps",
+ "cartography"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-geo",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-geo.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c && mkdir -p test/output && test/compare-images",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-geo.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-geo/src/area.js b/node_modules/d3-geo/src/area.js
new file mode 100644
index 00000000..df91640e
--- /dev/null
+++ b/node_modules/d3-geo/src/area.js
@@ -0,0 +1,76 @@
+import {Adder} from "d3-array";
+import {atan2, cos, quarterPi, radians, sin, tau} from "./math.js";
+import noop from "./noop.js";
+import stream from "./stream.js";
+
+export var areaRingSum = new Adder();
+
+// hello?
+
+var areaSum = new Adder(),
+ lambda00,
+ phi00,
+ lambda0,
+ cosPhi0,
+ sinPhi0;
+
+export var areaStream = {
+ point: noop,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: function() {
+ areaRingSum = new Adder();
+ areaStream.lineStart = areaRingStart;
+ areaStream.lineEnd = areaRingEnd;
+ },
+ polygonEnd: function() {
+ var areaRing = +areaRingSum;
+ areaSum.add(areaRing < 0 ? tau + areaRing : areaRing);
+ this.lineStart = this.lineEnd = this.point = noop;
+ },
+ sphere: function() {
+ areaSum.add(tau);
+ }
+};
+
+function areaRingStart() {
+ areaStream.point = areaPointFirst;
+}
+
+function areaRingEnd() {
+ areaPoint(lambda00, phi00);
+}
+
+function areaPointFirst(lambda, phi) {
+ areaStream.point = areaPoint;
+ lambda00 = lambda, phi00 = phi;
+ lambda *= radians, phi *= radians;
+ lambda0 = lambda, cosPhi0 = cos(phi = phi / 2 + quarterPi), sinPhi0 = sin(phi);
+}
+
+function areaPoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ phi = phi / 2 + quarterPi; // half the angular distance from south pole
+
+ // Spherical excess E for a spherical triangle with vertices: south pole,
+ // previous point, current point. Uses a formula derived from Cagnoli’s
+ // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2).
+ var dLambda = lambda - lambda0,
+ sdLambda = dLambda >= 0 ? 1 : -1,
+ adLambda = sdLambda * dLambda,
+ cosPhi = cos(phi),
+ sinPhi = sin(phi),
+ k = sinPhi0 * sinPhi,
+ u = cosPhi0 * cosPhi + k * cos(adLambda),
+ v = k * sdLambda * sin(adLambda);
+ areaRingSum.add(atan2(v, u));
+
+ // Advance the previous points.
+ lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi;
+}
+
+export default function(object) {
+ areaSum = new Adder();
+ stream(object, areaStream);
+ return areaSum * 2;
+}
diff --git a/node_modules/d3-geo/src/bounds.js b/node_modules/d3-geo/src/bounds.js
new file mode 100644
index 00000000..0b398ac9
--- /dev/null
+++ b/node_modules/d3-geo/src/bounds.js
@@ -0,0 +1,179 @@
+import {Adder} from "d3-array";
+import {areaStream, areaRingSum} from "./area.js";
+import {cartesian, cartesianCross, cartesianNormalizeInPlace, spherical} from "./cartesian.js";
+import {abs, degrees, epsilon, radians} from "./math.js";
+import stream from "./stream.js";
+
+var lambda0, phi0, lambda1, phi1, // bounds
+ lambda2, // previous lambda-coordinate
+ lambda00, phi00, // first point
+ p0, // previous 3D point
+ deltaSum,
+ ranges,
+ range;
+
+var boundsStream = {
+ point: boundsPoint,
+ lineStart: boundsLineStart,
+ lineEnd: boundsLineEnd,
+ polygonStart: function() {
+ boundsStream.point = boundsRingPoint;
+ boundsStream.lineStart = boundsRingStart;
+ boundsStream.lineEnd = boundsRingEnd;
+ deltaSum = new Adder();
+ areaStream.polygonStart();
+ },
+ polygonEnd: function() {
+ areaStream.polygonEnd();
+ boundsStream.point = boundsPoint;
+ boundsStream.lineStart = boundsLineStart;
+ boundsStream.lineEnd = boundsLineEnd;
+ if (areaRingSum < 0) lambda0 = -(lambda1 = 180), phi0 = -(phi1 = 90);
+ else if (deltaSum > epsilon) phi1 = 90;
+ else if (deltaSum < -epsilon) phi0 = -90;
+ range[0] = lambda0, range[1] = lambda1;
+ },
+ sphere: function() {
+ lambda0 = -(lambda1 = 180), phi0 = -(phi1 = 90);
+ }
+};
+
+function boundsPoint(lambda, phi) {
+ ranges.push(range = [lambda0 = lambda, lambda1 = lambda]);
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+}
+
+function linePoint(lambda, phi) {
+ var p = cartesian([lambda * radians, phi * radians]);
+ if (p0) {
+ var normal = cartesianCross(p0, p),
+ equatorial = [normal[1], -normal[0], 0],
+ inflection = cartesianCross(equatorial, normal);
+ cartesianNormalizeInPlace(inflection);
+ inflection = spherical(inflection);
+ var delta = lambda - lambda2,
+ sign = delta > 0 ? 1 : -1,
+ lambdai = inflection[0] * degrees * sign,
+ phii,
+ antimeridian = abs(delta) > 180;
+ if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
+ phii = inflection[1] * degrees;
+ if (phii > phi1) phi1 = phii;
+ } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) {
+ phii = -inflection[1] * degrees;
+ if (phii < phi0) phi0 = phii;
+ } else {
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+ }
+ if (antimeridian) {
+ if (lambda < lambda2) {
+ if (angle(lambda0, lambda) > angle(lambda0, lambda1)) lambda1 = lambda;
+ } else {
+ if (angle(lambda, lambda1) > angle(lambda0, lambda1)) lambda0 = lambda;
+ }
+ } else {
+ if (lambda1 >= lambda0) {
+ if (lambda < lambda0) lambda0 = lambda;
+ if (lambda > lambda1) lambda1 = lambda;
+ } else {
+ if (lambda > lambda2) {
+ if (angle(lambda0, lambda) > angle(lambda0, lambda1)) lambda1 = lambda;
+ } else {
+ if (angle(lambda, lambda1) > angle(lambda0, lambda1)) lambda0 = lambda;
+ }
+ }
+ }
+ } else {
+ ranges.push(range = [lambda0 = lambda, lambda1 = lambda]);
+ }
+ if (phi < phi0) phi0 = phi;
+ if (phi > phi1) phi1 = phi;
+ p0 = p, lambda2 = lambda;
+}
+
+function boundsLineStart() {
+ boundsStream.point = linePoint;
+}
+
+function boundsLineEnd() {
+ range[0] = lambda0, range[1] = lambda1;
+ boundsStream.point = boundsPoint;
+ p0 = null;
+}
+
+function boundsRingPoint(lambda, phi) {
+ if (p0) {
+ var delta = lambda - lambda2;
+ deltaSum.add(abs(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta);
+ } else {
+ lambda00 = lambda, phi00 = phi;
+ }
+ areaStream.point(lambda, phi);
+ linePoint(lambda, phi);
+}
+
+function boundsRingStart() {
+ areaStream.lineStart();
+}
+
+function boundsRingEnd() {
+ boundsRingPoint(lambda00, phi00);
+ areaStream.lineEnd();
+ if (abs(deltaSum) > epsilon) lambda0 = -(lambda1 = 180);
+ range[0] = lambda0, range[1] = lambda1;
+ p0 = null;
+}
+
+// Finds the left-right distance between two longitudes.
+// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want
+// the distance between ±180° to be 360°.
+function angle(lambda0, lambda1) {
+ return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1;
+}
+
+function rangeCompare(a, b) {
+ return a[0] - b[0];
+}
+
+function rangeContains(range, x) {
+ return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
+}
+
+export default function(feature) {
+ var i, n, a, b, merged, deltaMax, delta;
+
+ phi1 = lambda1 = -(lambda0 = phi0 = Infinity);
+ ranges = [];
+ stream(feature, boundsStream);
+
+ // First, sort ranges by their minimum longitudes.
+ if (n = ranges.length) {
+ ranges.sort(rangeCompare);
+
+ // Then, merge any ranges that overlap.
+ for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) {
+ b = ranges[i];
+ if (rangeContains(a, b[0]) || rangeContains(a, b[1])) {
+ if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
+ if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
+ } else {
+ merged.push(a = b);
+ }
+ }
+
+ // Finally, find the largest gap between the merged ranges.
+ // The final bounding box will be the inverse of this gap.
+ for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) {
+ b = merged[i];
+ if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0 = b[0], lambda1 = a[1];
+ }
+ }
+
+ ranges = range = null;
+
+ return lambda0 === Infinity || phi0 === Infinity
+ ? [[NaN, NaN], [NaN, NaN]]
+ : [[lambda0, phi0], [lambda1, phi1]];
+}
diff --git a/node_modules/d3-geo/src/cartesian.js b/node_modules/d3-geo/src/cartesian.js
new file mode 100644
index 00000000..73790a6d
--- /dev/null
+++ b/node_modules/d3-geo/src/cartesian.js
@@ -0,0 +1,33 @@
+import {asin, atan2, cos, sin, sqrt} from "./math.js";
+
+export function spherical(cartesian) {
+ return [atan2(cartesian[1], cartesian[0]), asin(cartesian[2])];
+}
+
+export function cartesian(spherical) {
+ var lambda = spherical[0], phi = spherical[1], cosPhi = cos(phi);
+ return [cosPhi * cos(lambda), cosPhi * sin(lambda), sin(phi)];
+}
+
+export function cartesianDot(a, b) {
+ return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+}
+
+export function cartesianCross(a, b) {
+ return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]];
+}
+
+// TODO return a
+export function cartesianAddInPlace(a, b) {
+ a[0] += b[0], a[1] += b[1], a[2] += b[2];
+}
+
+export function cartesianScale(vector, k) {
+ return [vector[0] * k, vector[1] * k, vector[2] * k];
+}
+
+// TODO return d
+export function cartesianNormalizeInPlace(d) {
+ var l = sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
+ d[0] /= l, d[1] /= l, d[2] /= l;
+}
diff --git a/node_modules/d3-geo/src/centroid.js b/node_modules/d3-geo/src/centroid.js
new file mode 100644
index 00000000..6b1eede0
--- /dev/null
+++ b/node_modules/d3-geo/src/centroid.js
@@ -0,0 +1,143 @@
+import {Adder} from "d3-array";
+import {asin, atan2, cos, degrees, epsilon, epsilon2, hypot, radians, sin, sqrt} from "./math.js";
+import noop from "./noop.js";
+import stream from "./stream.js";
+
+var W0, W1,
+ X0, Y0, Z0,
+ X1, Y1, Z1,
+ X2, Y2, Z2,
+ lambda00, phi00, // first point
+ x0, y0, z0; // previous point
+
+var centroidStream = {
+ sphere: noop,
+ point: centroidPoint,
+ lineStart: centroidLineStart,
+ lineEnd: centroidLineEnd,
+ polygonStart: function() {
+ centroidStream.lineStart = centroidRingStart;
+ centroidStream.lineEnd = centroidRingEnd;
+ },
+ polygonEnd: function() {
+ centroidStream.lineStart = centroidLineStart;
+ centroidStream.lineEnd = centroidLineEnd;
+ }
+};
+
+// Arithmetic mean of Cartesian vectors.
+function centroidPoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi);
+ centroidPointCartesian(cosPhi * cos(lambda), cosPhi * sin(lambda), sin(phi));
+}
+
+function centroidPointCartesian(x, y, z) {
+ ++W0;
+ X0 += (x - X0) / W0;
+ Y0 += (y - Y0) / W0;
+ Z0 += (z - Z0) / W0;
+}
+
+function centroidLineStart() {
+ centroidStream.point = centroidLinePointFirst;
+}
+
+function centroidLinePointFirst(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi);
+ x0 = cosPhi * cos(lambda);
+ y0 = cosPhi * sin(lambda);
+ z0 = sin(phi);
+ centroidStream.point = centroidLinePoint;
+ centroidPointCartesian(x0, y0, z0);
+}
+
+function centroidLinePoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi),
+ x = cosPhi * cos(lambda),
+ y = cosPhi * sin(lambda),
+ z = sin(phi),
+ w = atan2(sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
+ W1 += w;
+ X1 += w * (x0 + (x0 = x));
+ Y1 += w * (y0 + (y0 = y));
+ Z1 += w * (z0 + (z0 = z));
+ centroidPointCartesian(x0, y0, z0);
+}
+
+function centroidLineEnd() {
+ centroidStream.point = centroidPoint;
+}
+
+// See J. E. Brock, The Inertia Tensor for a Spherical Triangle,
+// J. Applied Mechanics 42, 239 (1975).
+function centroidRingStart() {
+ centroidStream.point = centroidRingPointFirst;
+}
+
+function centroidRingEnd() {
+ centroidRingPoint(lambda00, phi00);
+ centroidStream.point = centroidPoint;
+}
+
+function centroidRingPointFirst(lambda, phi) {
+ lambda00 = lambda, phi00 = phi;
+ lambda *= radians, phi *= radians;
+ centroidStream.point = centroidRingPoint;
+ var cosPhi = cos(phi);
+ x0 = cosPhi * cos(lambda);
+ y0 = cosPhi * sin(lambda);
+ z0 = sin(phi);
+ centroidPointCartesian(x0, y0, z0);
+}
+
+function centroidRingPoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var cosPhi = cos(phi),
+ x = cosPhi * cos(lambda),
+ y = cosPhi * sin(lambda),
+ z = sin(phi),
+ cx = y0 * z - z0 * y,
+ cy = z0 * x - x0 * z,
+ cz = x0 * y - y0 * x,
+ m = hypot(cx, cy, cz),
+ w = asin(m), // line weight = angle
+ v = m && -w / m; // area weight multiplier
+ X2.add(v * cx);
+ Y2.add(v * cy);
+ Z2.add(v * cz);
+ W1 += w;
+ X1 += w * (x0 + (x0 = x));
+ Y1 += w * (y0 + (y0 = y));
+ Z1 += w * (z0 + (z0 = z));
+ centroidPointCartesian(x0, y0, z0);
+}
+
+export default function(object) {
+ W0 = W1 =
+ X0 = Y0 = Z0 =
+ X1 = Y1 = Z1 = 0;
+ X2 = new Adder();
+ Y2 = new Adder();
+ Z2 = new Adder();
+ stream(object, centroidStream);
+
+ var x = +X2,
+ y = +Y2,
+ z = +Z2,
+ m = hypot(x, y, z);
+
+ // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid.
+ if (m < epsilon2) {
+ x = X1, y = Y1, z = Z1;
+ // If the feature has zero length, fall back to arithmetic mean of point vectors.
+ if (W1 < epsilon) x = X0, y = Y0, z = Z0;
+ m = hypot(x, y, z);
+ // If the feature still has an undefined ccentroid, then return.
+ if (m < epsilon2) return [NaN, NaN];
+ }
+
+ return [atan2(y, x) * degrees, asin(z / m) * degrees];
+}
diff --git a/node_modules/d3-geo/src/circle.js b/node_modules/d3-geo/src/circle.js
new file mode 100644
index 00000000..85a0af94
--- /dev/null
+++ b/node_modules/d3-geo/src/circle.js
@@ -0,0 +1,72 @@
+import {cartesian, cartesianNormalizeInPlace, spherical} from "./cartesian.js";
+import constant from "./constant.js";
+import {acos, cos, degrees, epsilon, radians, sin, tau} from "./math.js";
+import {rotateRadians} from "./rotation.js";
+
+// Generates a circle centered at [0°, 0°], with a given radius and precision.
+export function circleStream(stream, radius, delta, direction, t0, t1) {
+ if (!delta) return;
+ var cosRadius = cos(radius),
+ sinRadius = sin(radius),
+ step = direction * delta;
+ if (t0 == null) {
+ t0 = radius + direction * tau;
+ t1 = radius - step / 2;
+ } else {
+ t0 = circleRadius(cosRadius, t0);
+ t1 = circleRadius(cosRadius, t1);
+ if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau;
+ }
+ for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) {
+ point = spherical([cosRadius, -sinRadius * cos(t), -sinRadius * sin(t)]);
+ stream.point(point[0], point[1]);
+ }
+}
+
+// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0].
+function circleRadius(cosRadius, point) {
+ point = cartesian(point), point[0] -= cosRadius;
+ cartesianNormalizeInPlace(point);
+ var radius = acos(-point[1]);
+ return ((-point[2] < 0 ? -radius : radius) + tau - epsilon) % tau;
+}
+
+export default function() {
+ var center = constant([0, 0]),
+ radius = constant(90),
+ precision = constant(6),
+ ring,
+ rotate,
+ stream = {point: point};
+
+ function point(x, y) {
+ ring.push(x = rotate(x, y));
+ x[0] *= degrees, x[1] *= degrees;
+ }
+
+ function circle() {
+ var c = center.apply(this, arguments),
+ r = radius.apply(this, arguments) * radians,
+ p = precision.apply(this, arguments) * radians;
+ ring = [];
+ rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert;
+ circleStream(stream, r, p, 1);
+ c = {type: "Polygon", coordinates: [ring]};
+ ring = rotate = null;
+ return c;
+ }
+
+ circle.center = function(_) {
+ return arguments.length ? (center = typeof _ === "function" ? _ : constant([+_[0], +_[1]]), circle) : center;
+ };
+
+ circle.radius = function(_) {
+ return arguments.length ? (radius = typeof _ === "function" ? _ : constant(+_), circle) : radius;
+ };
+
+ circle.precision = function(_) {
+ return arguments.length ? (precision = typeof _ === "function" ? _ : constant(+_), circle) : precision;
+ };
+
+ return circle;
+}
diff --git a/node_modules/d3-geo/src/clip/antimeridian.js b/node_modules/d3-geo/src/clip/antimeridian.js
new file mode 100644
index 00000000..7ed32d42
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/antimeridian.js
@@ -0,0 +1,92 @@
+import clip from "./index.js";
+import {abs, atan, cos, epsilon, halfPi, pi, sin} from "../math.js";
+
+export default clip(
+ function() { return true; },
+ clipAntimeridianLine,
+ clipAntimeridianInterpolate,
+ [-pi, -halfPi]
+);
+
+// Takes a line and cuts into visible segments. Return values: 0 - there were
+// intersections or the line was empty; 1 - no intersections; 2 - there were
+// intersections, and the first and last segments should be rejoined.
+function clipAntimeridianLine(stream) {
+ var lambda0 = NaN,
+ phi0 = NaN,
+ sign0 = NaN,
+ clean; // no intersections
+
+ return {
+ lineStart: function() {
+ stream.lineStart();
+ clean = 1;
+ },
+ point: function(lambda1, phi1) {
+ var sign1 = lambda1 > 0 ? pi : -pi,
+ delta = abs(lambda1 - lambda0);
+ if (abs(delta - pi) < epsilon) { // line crosses a pole
+ stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi : -halfPi);
+ stream.point(sign0, phi0);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(sign1, phi0);
+ stream.point(lambda1, phi0);
+ clean = 0;
+ } else if (sign0 !== sign1 && delta >= pi) { // line crosses antimeridian
+ if (abs(lambda0 - sign0) < epsilon) lambda0 -= sign0 * epsilon; // handle degeneracies
+ if (abs(lambda1 - sign1) < epsilon) lambda1 -= sign1 * epsilon;
+ phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1);
+ stream.point(sign0, phi0);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(sign1, phi0);
+ clean = 0;
+ }
+ stream.point(lambda0 = lambda1, phi0 = phi1);
+ sign0 = sign1;
+ },
+ lineEnd: function() {
+ stream.lineEnd();
+ lambda0 = phi0 = NaN;
+ },
+ clean: function() {
+ return 2 - clean; // if intersections, rejoin first and last segments
+ }
+ };
+}
+
+function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) {
+ var cosPhi0,
+ cosPhi1,
+ sinLambda0Lambda1 = sin(lambda0 - lambda1);
+ return abs(sinLambda0Lambda1) > epsilon
+ ? atan((sin(phi0) * (cosPhi1 = cos(phi1)) * sin(lambda1)
+ - sin(phi1) * (cosPhi0 = cos(phi0)) * sin(lambda0))
+ / (cosPhi0 * cosPhi1 * sinLambda0Lambda1))
+ : (phi0 + phi1) / 2;
+}
+
+function clipAntimeridianInterpolate(from, to, direction, stream) {
+ var phi;
+ if (from == null) {
+ phi = direction * halfPi;
+ stream.point(-pi, phi);
+ stream.point(0, phi);
+ stream.point(pi, phi);
+ stream.point(pi, 0);
+ stream.point(pi, -phi);
+ stream.point(0, -phi);
+ stream.point(-pi, -phi);
+ stream.point(-pi, 0);
+ stream.point(-pi, phi);
+ } else if (abs(from[0] - to[0]) > epsilon) {
+ var lambda = from[0] < to[0] ? pi : -pi;
+ phi = direction * lambda / 2;
+ stream.point(-lambda, phi);
+ stream.point(0, phi);
+ stream.point(lambda, phi);
+ } else {
+ stream.point(to[0], to[1]);
+ }
+}
diff --git a/node_modules/d3-geo/src/clip/buffer.js b/node_modules/d3-geo/src/clip/buffer.js
new file mode 100644
index 00000000..f5e1ecec
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/buffer.js
@@ -0,0 +1,24 @@
+import noop from "../noop.js";
+
+export default function() {
+ var lines = [],
+ line;
+ return {
+ point: function(x, y, m) {
+ line.push([x, y, m]);
+ },
+ lineStart: function() {
+ lines.push(line = []);
+ },
+ lineEnd: noop,
+ rejoin: function() {
+ if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
+ },
+ result: function() {
+ var result = lines;
+ lines = [];
+ line = null;
+ return result;
+ }
+ };
+}
diff --git a/node_modules/d3-geo/src/clip/circle.js b/node_modules/d3-geo/src/clip/circle.js
new file mode 100644
index 00000000..30dcf441
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/circle.js
@@ -0,0 +1,177 @@
+import {cartesian, cartesianAddInPlace, cartesianCross, cartesianDot, cartesianScale, spherical} from "../cartesian.js";
+import {circleStream} from "../circle.js";
+import {abs, cos, epsilon, pi, radians, sqrt} from "../math.js";
+import pointEqual from "../pointEqual.js";
+import clip from "./index.js";
+
+export default function(radius) {
+ var cr = cos(radius),
+ delta = 6 * radians,
+ smallRadius = cr > 0,
+ notHemisphere = abs(cr) > epsilon; // TODO optimise for this common case
+
+ function interpolate(from, to, direction, stream) {
+ circleStream(stream, radius, delta, direction, from, to);
+ }
+
+ function visible(lambda, phi) {
+ return cos(lambda) * cos(phi) > cr;
+ }
+
+ // Takes a line and cuts into visible segments. Return values used for polygon
+ // clipping: 0 - there were intersections or the line was empty; 1 - no
+ // intersections 2 - there were intersections, and the first and last segments
+ // should be rejoined.
+ function clipLine(stream) {
+ var point0, // previous point
+ c0, // code for previous point
+ v0, // visibility of previous point
+ v00, // visibility of first point
+ clean; // no intersections
+ return {
+ lineStart: function() {
+ v00 = v0 = false;
+ clean = 1;
+ },
+ point: function(lambda, phi) {
+ var point1 = [lambda, phi],
+ point2,
+ v = visible(lambda, phi),
+ c = smallRadius
+ ? v ? 0 : code(lambda, phi)
+ : v ? code(lambda + (lambda < 0 ? pi : -pi), phi) : 0;
+ if (!point0 && (v00 = v0 = v)) stream.lineStart();
+ if (v !== v0) {
+ point2 = intersect(point0, point1);
+ if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2))
+ point1[2] = 1;
+ }
+ if (v !== v0) {
+ clean = 0;
+ if (v) {
+ // outside going in
+ stream.lineStart();
+ point2 = intersect(point1, point0);
+ stream.point(point2[0], point2[1]);
+ } else {
+ // inside going out
+ point2 = intersect(point0, point1);
+ stream.point(point2[0], point2[1], 2);
+ stream.lineEnd();
+ }
+ point0 = point2;
+ } else if (notHemisphere && point0 && smallRadius ^ v) {
+ var t;
+ // If the codes for two points are different, or are both zero,
+ // and there this segment intersects with the small circle.
+ if (!(c & c0) && (t = intersect(point1, point0, true))) {
+ clean = 0;
+ if (smallRadius) {
+ stream.lineStart();
+ stream.point(t[0][0], t[0][1]);
+ stream.point(t[1][0], t[1][1]);
+ stream.lineEnd();
+ } else {
+ stream.point(t[1][0], t[1][1]);
+ stream.lineEnd();
+ stream.lineStart();
+ stream.point(t[0][0], t[0][1], 3);
+ }
+ }
+ }
+ if (v && (!point0 || !pointEqual(point0, point1))) {
+ stream.point(point1[0], point1[1]);
+ }
+ point0 = point1, v0 = v, c0 = c;
+ },
+ lineEnd: function() {
+ if (v0) stream.lineEnd();
+ point0 = null;
+ },
+ // Rejoin first and last segments if there were intersections and the first
+ // and last points were visible.
+ clean: function() {
+ return clean | ((v00 && v0) << 1);
+ }
+ };
+ }
+
+ // Intersects the great circle between a and b with the clip circle.
+ function intersect(a, b, two) {
+ var pa = cartesian(a),
+ pb = cartesian(b);
+
+ // We have two planes, n1.p = d1 and n2.p = d2.
+ // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2).
+ var n1 = [1, 0, 0], // normal
+ n2 = cartesianCross(pa, pb),
+ n2n2 = cartesianDot(n2, n2),
+ n1n2 = n2[0], // cartesianDot(n1, n2),
+ determinant = n2n2 - n1n2 * n1n2;
+
+ // Two polar points.
+ if (!determinant) return !two && a;
+
+ var c1 = cr * n2n2 / determinant,
+ c2 = -cr * n1n2 / determinant,
+ n1xn2 = cartesianCross(n1, n2),
+ A = cartesianScale(n1, c1),
+ B = cartesianScale(n2, c2);
+ cartesianAddInPlace(A, B);
+
+ // Solve |p(t)|^2 = 1.
+ var u = n1xn2,
+ w = cartesianDot(A, u),
+ uu = cartesianDot(u, u),
+ t2 = w * w - uu * (cartesianDot(A, A) - 1);
+
+ if (t2 < 0) return;
+
+ var t = sqrt(t2),
+ q = cartesianScale(u, (-w - t) / uu);
+ cartesianAddInPlace(q, A);
+ q = spherical(q);
+
+ if (!two) return q;
+
+ // Two intersection points.
+ var lambda0 = a[0],
+ lambda1 = b[0],
+ phi0 = a[1],
+ phi1 = b[1],
+ z;
+
+ if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z;
+
+ var delta = lambda1 - lambda0,
+ polar = abs(delta - pi) < epsilon,
+ meridian = polar || delta < epsilon;
+
+ if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z;
+
+ // Check that the first point is between a and b.
+ if (meridian
+ ? polar
+ ? phi0 + phi1 > 0 ^ q[1] < (abs(q[0] - lambda0) < epsilon ? phi0 : phi1)
+ : phi0 <= q[1] && q[1] <= phi1
+ : delta > pi ^ (lambda0 <= q[0] && q[0] <= lambda1)) {
+ var q1 = cartesianScale(u, (-w + t) / uu);
+ cartesianAddInPlace(q1, A);
+ return [q, spherical(q1)];
+ }
+ }
+
+ // Generates a 4-bit vector representing the location of a point relative to
+ // the small circle's bounding box.
+ function code(lambda, phi) {
+ var r = smallRadius ? radius : pi - radius,
+ code = 0;
+ if (lambda < -r) code |= 1; // left
+ else if (lambda > r) code |= 2; // right
+ if (phi < -r) code |= 4; // below
+ else if (phi > r) code |= 8; // above
+ return code;
+ }
+
+ return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi, radius - pi]);
+}
diff --git a/node_modules/d3-geo/src/clip/extent.js b/node_modules/d3-geo/src/clip/extent.js
new file mode 100644
index 00000000..5ff06ee1
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/extent.js
@@ -0,0 +1,20 @@
+import clipRectangle from "./rectangle.js";
+
+export default function() {
+ var x0 = 0,
+ y0 = 0,
+ x1 = 960,
+ y1 = 500,
+ cache,
+ cacheStream,
+ clip;
+
+ return clip = {
+ stream: function(stream) {
+ return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream);
+ },
+ extent: function(_) {
+ return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]];
+ }
+ };
+}
diff --git a/node_modules/d3-geo/src/clip/index.js b/node_modules/d3-geo/src/clip/index.js
new file mode 100644
index 00000000..af7ac91f
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/index.js
@@ -0,0 +1,131 @@
+import clipBuffer from "./buffer.js";
+import clipRejoin from "./rejoin.js";
+import {epsilon, halfPi} from "../math.js";
+import polygonContains from "../polygonContains.js";
+import {merge} from "d3-array";
+
+export default function(pointVisible, clipLine, interpolate, start) {
+ return function(sink) {
+ var line = clipLine(sink),
+ ringBuffer = clipBuffer(),
+ ringSink = clipLine(ringBuffer),
+ polygonStarted = false,
+ polygon,
+ segments,
+ ring;
+
+ var clip = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: function() {
+ clip.point = pointRing;
+ clip.lineStart = ringStart;
+ clip.lineEnd = ringEnd;
+ segments = [];
+ polygon = [];
+ },
+ polygonEnd: function() {
+ clip.point = point;
+ clip.lineStart = lineStart;
+ clip.lineEnd = lineEnd;
+ segments = merge(segments);
+ var startInside = polygonContains(polygon, start);
+ if (segments.length) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ clipRejoin(segments, compareIntersection, startInside, interpolate, sink);
+ } else if (startInside) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ sink.lineStart();
+ interpolate(null, null, 1, sink);
+ sink.lineEnd();
+ }
+ if (polygonStarted) sink.polygonEnd(), polygonStarted = false;
+ segments = polygon = null;
+ },
+ sphere: function() {
+ sink.polygonStart();
+ sink.lineStart();
+ interpolate(null, null, 1, sink);
+ sink.lineEnd();
+ sink.polygonEnd();
+ }
+ };
+
+ function point(lambda, phi) {
+ if (pointVisible(lambda, phi)) sink.point(lambda, phi);
+ }
+
+ function pointLine(lambda, phi) {
+ line.point(lambda, phi);
+ }
+
+ function lineStart() {
+ clip.point = pointLine;
+ line.lineStart();
+ }
+
+ function lineEnd() {
+ clip.point = point;
+ line.lineEnd();
+ }
+
+ function pointRing(lambda, phi) {
+ ring.push([lambda, phi]);
+ ringSink.point(lambda, phi);
+ }
+
+ function ringStart() {
+ ringSink.lineStart();
+ ring = [];
+ }
+
+ function ringEnd() {
+ pointRing(ring[0][0], ring[0][1]);
+ ringSink.lineEnd();
+
+ var clean = ringSink.clean(),
+ ringSegments = ringBuffer.result(),
+ i, n = ringSegments.length, m,
+ segment,
+ point;
+
+ ring.pop();
+ polygon.push(ring);
+ ring = null;
+
+ if (!n) return;
+
+ // No intersections.
+ if (clean & 1) {
+ segment = ringSegments[0];
+ if ((m = segment.length - 1) > 0) {
+ if (!polygonStarted) sink.polygonStart(), polygonStarted = true;
+ sink.lineStart();
+ for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]);
+ sink.lineEnd();
+ }
+ return;
+ }
+
+ // Rejoin connected segments.
+ // TODO reuse ringBuffer.rejoin()?
+ if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
+
+ segments.push(ringSegments.filter(validSegment));
+ }
+
+ return clip;
+ };
+}
+
+function validSegment(segment) {
+ return segment.length > 1;
+}
+
+// Intersections are sorted along the clip edge. For both antimeridian cutting
+// and circle clipping, the same comparison is used.
+function compareIntersection(a, b) {
+ return ((a = a.x)[0] < 0 ? a[1] - halfPi - epsilon : halfPi - a[1])
+ - ((b = b.x)[0] < 0 ? b[1] - halfPi - epsilon : halfPi - b[1]);
+}
diff --git a/node_modules/d3-geo/src/clip/line.js b/node_modules/d3-geo/src/clip/line.js
new file mode 100644
index 00000000..3b173d7b
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/line.js
@@ -0,0 +1,59 @@
+export default function(a, b, x0, y0, x1, y1) {
+ var ax = a[0],
+ ay = a[1],
+ bx = b[0],
+ by = b[1],
+ t0 = 0,
+ t1 = 1,
+ dx = bx - ax,
+ dy = by - ay,
+ r;
+
+ r = x0 - ax;
+ if (!dx && r > 0) return;
+ r /= dx;
+ if (dx < 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ } else if (dx > 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ }
+
+ r = x1 - ax;
+ if (!dx && r < 0) return;
+ r /= dx;
+ if (dx < 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ } else if (dx > 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ }
+
+ r = y0 - ay;
+ if (!dy && r > 0) return;
+ r /= dy;
+ if (dy < 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ } else if (dy > 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ }
+
+ r = y1 - ay;
+ if (!dy && r < 0) return;
+ r /= dy;
+ if (dy < 0) {
+ if (r > t1) return;
+ if (r > t0) t0 = r;
+ } else if (dy > 0) {
+ if (r < t0) return;
+ if (r < t1) t1 = r;
+ }
+
+ if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy;
+ if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy;
+ return true;
+}
diff --git a/node_modules/d3-geo/src/clip/rectangle.js b/node_modules/d3-geo/src/clip/rectangle.js
new file mode 100644
index 00000000..47676261
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/rectangle.js
@@ -0,0 +1,168 @@
+import {abs, epsilon} from "../math.js";
+import clipBuffer from "./buffer.js";
+import clipLine from "./line.js";
+import clipRejoin from "./rejoin.js";
+import {merge} from "d3-array";
+
+var clipMax = 1e9, clipMin = -clipMax;
+
+// TODO Use d3-polygon’s polygonContains here for the ring check?
+// TODO Eliminate duplicate buffering in clipBuffer and polygon.push?
+
+export default function clipRectangle(x0, y0, x1, y1) {
+
+ function visible(x, y) {
+ return x0 <= x && x <= x1 && y0 <= y && y <= y1;
+ }
+
+ function interpolate(from, to, direction, stream) {
+ var a = 0, a1 = 0;
+ if (from == null
+ || (a = corner(from, direction)) !== (a1 = corner(to, direction))
+ || comparePoint(from, to) < 0 ^ direction > 0) {
+ do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
+ while ((a = (a + direction + 4) % 4) !== a1);
+ } else {
+ stream.point(to[0], to[1]);
+ }
+ }
+
+ function corner(p, direction) {
+ return abs(p[0] - x0) < epsilon ? direction > 0 ? 0 : 3
+ : abs(p[0] - x1) < epsilon ? direction > 0 ? 2 : 1
+ : abs(p[1] - y0) < epsilon ? direction > 0 ? 1 : 0
+ : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon
+ }
+
+ function compareIntersection(a, b) {
+ return comparePoint(a.x, b.x);
+ }
+
+ function comparePoint(a, b) {
+ var ca = corner(a, 1),
+ cb = corner(b, 1);
+ return ca !== cb ? ca - cb
+ : ca === 0 ? b[1] - a[1]
+ : ca === 1 ? a[0] - b[0]
+ : ca === 2 ? a[1] - b[1]
+ : b[0] - a[0];
+ }
+
+ return function(stream) {
+ var activeStream = stream,
+ bufferStream = clipBuffer(),
+ segments,
+ polygon,
+ ring,
+ x__, y__, v__, // first point
+ x_, y_, v_, // previous point
+ first,
+ clean;
+
+ var clipStream = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: polygonStart,
+ polygonEnd: polygonEnd
+ };
+
+ function point(x, y) {
+ if (visible(x, y)) activeStream.point(x, y);
+ }
+
+ function polygonInside() {
+ var winding = 0;
+
+ for (var i = 0, n = polygon.length; i < n; ++i) {
+ for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) {
+ a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1];
+ if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; }
+ else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; }
+ }
+ }
+
+ return winding;
+ }
+
+ // Buffer geometry within a polygon and then clip it en masse.
+ function polygonStart() {
+ activeStream = bufferStream, segments = [], polygon = [], clean = true;
+ }
+
+ function polygonEnd() {
+ var startInside = polygonInside(),
+ cleanInside = clean && startInside,
+ visible = (segments = merge(segments)).length;
+ if (cleanInside || visible) {
+ stream.polygonStart();
+ if (cleanInside) {
+ stream.lineStart();
+ interpolate(null, null, 1, stream);
+ stream.lineEnd();
+ }
+ if (visible) {
+ clipRejoin(segments, compareIntersection, startInside, interpolate, stream);
+ }
+ stream.polygonEnd();
+ }
+ activeStream = stream, segments = polygon = ring = null;
+ }
+
+ function lineStart() {
+ clipStream.point = linePoint;
+ if (polygon) polygon.push(ring = []);
+ first = true;
+ v_ = false;
+ x_ = y_ = NaN;
+ }
+
+ // TODO rather than special-case polygons, simply handle them separately.
+ // Ideally, coincident intersection points should be jittered to avoid
+ // clipping issues.
+ function lineEnd() {
+ if (segments) {
+ linePoint(x__, y__);
+ if (v__ && v_) bufferStream.rejoin();
+ segments.push(bufferStream.result());
+ }
+ clipStream.point = point;
+ if (v_) activeStream.lineEnd();
+ }
+
+ function linePoint(x, y) {
+ var v = visible(x, y);
+ if (polygon) ring.push([x, y]);
+ if (first) {
+ x__ = x, y__ = y, v__ = v;
+ first = false;
+ if (v) {
+ activeStream.lineStart();
+ activeStream.point(x, y);
+ }
+ } else {
+ if (v && v_) activeStream.point(x, y);
+ else {
+ var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))],
+ b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))];
+ if (clipLine(a, b, x0, y0, x1, y1)) {
+ if (!v_) {
+ activeStream.lineStart();
+ activeStream.point(a[0], a[1]);
+ }
+ activeStream.point(b[0], b[1]);
+ if (!v) activeStream.lineEnd();
+ clean = false;
+ } else if (v) {
+ activeStream.lineStart();
+ activeStream.point(x, y);
+ clean = false;
+ }
+ }
+ }
+ x_ = x, y_ = y, v_ = v;
+ }
+
+ return clipStream;
+ };
+}
diff --git a/node_modules/d3-geo/src/clip/rejoin.js b/node_modules/d3-geo/src/clip/rejoin.js
new file mode 100644
index 00000000..37e02411
--- /dev/null
+++ b/node_modules/d3-geo/src/clip/rejoin.js
@@ -0,0 +1,103 @@
+import pointEqual from "../pointEqual.js";
+import {epsilon} from "../math.js";
+
+function Intersection(point, points, other, entry) {
+ this.x = point;
+ this.z = points;
+ this.o = other; // another intersection
+ this.e = entry; // is an entry?
+ this.v = false; // visited
+ this.n = this.p = null; // next & previous
+}
+
+// A generalized polygon clipping algorithm: given a polygon that has been cut
+// into its visible line segments, and rejoins the segments by interpolating
+// along the clip edge.
+export default function(segments, compareIntersection, startInside, interpolate, stream) {
+ var subject = [],
+ clip = [],
+ i,
+ n;
+
+ segments.forEach(function(segment) {
+ if ((n = segment.length - 1) <= 0) return;
+ var n, p0 = segment[0], p1 = segment[n], x;
+
+ if (pointEqual(p0, p1)) {
+ if (!p0[2] && !p1[2]) {
+ stream.lineStart();
+ for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]);
+ stream.lineEnd();
+ return;
+ }
+ // handle degenerate cases by moving the point
+ p1[0] += 2 * epsilon;
+ }
+
+ subject.push(x = new Intersection(p0, segment, null, true));
+ clip.push(x.o = new Intersection(p0, null, x, false));
+ subject.push(x = new Intersection(p1, segment, null, false));
+ clip.push(x.o = new Intersection(p1, null, x, true));
+ });
+
+ if (!subject.length) return;
+
+ clip.sort(compareIntersection);
+ link(subject);
+ link(clip);
+
+ for (i = 0, n = clip.length; i < n; ++i) {
+ clip[i].e = startInside = !startInside;
+ }
+
+ var start = subject[0],
+ points,
+ point;
+
+ while (1) {
+ // Find first unvisited intersection.
+ var current = start,
+ isSubject = true;
+ while (current.v) if ((current = current.n) === start) return;
+ points = current.z;
+ stream.lineStart();
+ do {
+ current.v = current.o.v = true;
+ if (current.e) {
+ if (isSubject) {
+ for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]);
+ } else {
+ interpolate(current.x, current.n.x, 1, stream);
+ }
+ current = current.n;
+ } else {
+ if (isSubject) {
+ points = current.p.z;
+ for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]);
+ } else {
+ interpolate(current.x, current.p.x, -1, stream);
+ }
+ current = current.p;
+ }
+ current = current.o;
+ points = current.z;
+ isSubject = !isSubject;
+ } while (!current.v);
+ stream.lineEnd();
+ }
+}
+
+function link(array) {
+ if (!(n = array.length)) return;
+ var n,
+ i = 0,
+ a = array[0],
+ b;
+ while (++i < n) {
+ a.n = b = array[i];
+ b.p = a;
+ a = b;
+ }
+ a.n = b = array[0];
+ b.p = a;
+}
diff --git a/node_modules/d3-geo/src/compose.js b/node_modules/d3-geo/src/compose.js
new file mode 100644
index 00000000..f6a967a7
--- /dev/null
+++ b/node_modules/d3-geo/src/compose.js
@@ -0,0 +1,12 @@
+export default function(a, b) {
+
+ function compose(x, y) {
+ return x = a(x, y), b(x[0], x[1]);
+ }
+
+ if (a.invert && b.invert) compose.invert = function(x, y) {
+ return x = b.invert(x, y), x && a.invert(x[0], x[1]);
+ };
+
+ return compose;
+}
diff --git a/node_modules/d3-geo/src/constant.js b/node_modules/d3-geo/src/constant.js
new file mode 100644
index 00000000..b7d42e71
--- /dev/null
+++ b/node_modules/d3-geo/src/constant.js
@@ -0,0 +1,5 @@
+export default function(x) {
+ return function() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-geo/src/contains.js b/node_modules/d3-geo/src/contains.js
new file mode 100644
index 00000000..923f4d43
--- /dev/null
+++ b/node_modules/d3-geo/src/contains.js
@@ -0,0 +1,97 @@
+import {default as polygonContains} from "./polygonContains.js";
+import {default as distance} from "./distance.js";
+import {epsilon2, radians} from "./math.js";
+
+var containsObjectType = {
+ Feature: function(object, point) {
+ return containsGeometry(object.geometry, point);
+ },
+ FeatureCollection: function(object, point) {
+ var features = object.features, i = -1, n = features.length;
+ while (++i < n) if (containsGeometry(features[i].geometry, point)) return true;
+ return false;
+ }
+};
+
+var containsGeometryType = {
+ Sphere: function() {
+ return true;
+ },
+ Point: function(object, point) {
+ return containsPoint(object.coordinates, point);
+ },
+ MultiPoint: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsPoint(coordinates[i], point)) return true;
+ return false;
+ },
+ LineString: function(object, point) {
+ return containsLine(object.coordinates, point);
+ },
+ MultiLineString: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsLine(coordinates[i], point)) return true;
+ return false;
+ },
+ Polygon: function(object, point) {
+ return containsPolygon(object.coordinates, point);
+ },
+ MultiPolygon: function(object, point) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) if (containsPolygon(coordinates[i], point)) return true;
+ return false;
+ },
+ GeometryCollection: function(object, point) {
+ var geometries = object.geometries, i = -1, n = geometries.length;
+ while (++i < n) if (containsGeometry(geometries[i], point)) return true;
+ return false;
+ }
+};
+
+function containsGeometry(geometry, point) {
+ return geometry && containsGeometryType.hasOwnProperty(geometry.type)
+ ? containsGeometryType[geometry.type](geometry, point)
+ : false;
+}
+
+function containsPoint(coordinates, point) {
+ return distance(coordinates, point) === 0;
+}
+
+function containsLine(coordinates, point) {
+ var ao, bo, ab;
+ for (var i = 0, n = coordinates.length; i < n; i++) {
+ bo = distance(coordinates[i], point);
+ if (bo === 0) return true;
+ if (i > 0) {
+ ab = distance(coordinates[i], coordinates[i - 1]);
+ if (
+ ab > 0 &&
+ ao <= ab &&
+ bo <= ab &&
+ (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2 * ab
+ )
+ return true;
+ }
+ ao = bo;
+ }
+ return false;
+}
+
+function containsPolygon(coordinates, point) {
+ return !!polygonContains(coordinates.map(ringRadians), pointRadians(point));
+}
+
+function ringRadians(ring) {
+ return ring = ring.map(pointRadians), ring.pop(), ring;
+}
+
+function pointRadians(point) {
+ return [point[0] * radians, point[1] * radians];
+}
+
+export default function(object, point) {
+ return (object && containsObjectType.hasOwnProperty(object.type)
+ ? containsObjectType[object.type]
+ : containsGeometry)(object, point);
+}
diff --git a/node_modules/d3-geo/src/distance.js b/node_modules/d3-geo/src/distance.js
new file mode 100644
index 00000000..0cd23db1
--- /dev/null
+++ b/node_modules/d3-geo/src/distance.js
@@ -0,0 +1,10 @@
+import length from "./length.js";
+
+var coordinates = [null, null],
+ object = {type: "LineString", coordinates: coordinates};
+
+export default function(a, b) {
+ coordinates[0] = a;
+ coordinates[1] = b;
+ return length(object);
+}
diff --git a/node_modules/d3-geo/src/graticule.js b/node_modules/d3-geo/src/graticule.js
new file mode 100644
index 00000000..dc8daafd
--- /dev/null
+++ b/node_modules/d3-geo/src/graticule.js
@@ -0,0 +1,105 @@
+import {range} from "d3-array";
+import {abs, ceil, epsilon} from "./math.js";
+
+function graticuleX(y0, y1, dy) {
+ var y = range(y0, y1 - epsilon, dy).concat(y1);
+ return function(x) { return y.map(function(y) { return [x, y]; }); };
+}
+
+function graticuleY(x0, x1, dx) {
+ var x = range(x0, x1 - epsilon, dx).concat(x1);
+ return function(y) { return x.map(function(x) { return [x, y]; }); };
+}
+
+export default function graticule() {
+ var x1, x0, X1, X0,
+ y1, y0, Y1, Y0,
+ dx = 10, dy = dx, DX = 90, DY = 360,
+ x, y, X, Y,
+ precision = 2.5;
+
+ function graticule() {
+ return {type: "MultiLineString", coordinates: lines()};
+ }
+
+ function lines() {
+ return range(ceil(X0 / DX) * DX, X1, DX).map(X)
+ .concat(range(ceil(Y0 / DY) * DY, Y1, DY).map(Y))
+ .concat(range(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs(x % DX) > epsilon; }).map(x))
+ .concat(range(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs(y % DY) > epsilon; }).map(y));
+ }
+
+ graticule.lines = function() {
+ return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; });
+ };
+
+ graticule.outline = function() {
+ return {
+ type: "Polygon",
+ coordinates: [
+ X(X0).concat(
+ Y(Y1).slice(1),
+ X(X1).reverse().slice(1),
+ Y(Y0).reverse().slice(1))
+ ]
+ };
+ };
+
+ graticule.extent = function(_) {
+ if (!arguments.length) return graticule.extentMinor();
+ return graticule.extentMajor(_).extentMinor(_);
+ };
+
+ graticule.extentMajor = function(_) {
+ if (!arguments.length) return [[X0, Y0], [X1, Y1]];
+ X0 = +_[0][0], X1 = +_[1][0];
+ Y0 = +_[0][1], Y1 = +_[1][1];
+ if (X0 > X1) _ = X0, X0 = X1, X1 = _;
+ if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
+ return graticule.precision(precision);
+ };
+
+ graticule.extentMinor = function(_) {
+ if (!arguments.length) return [[x0, y0], [x1, y1]];
+ x0 = +_[0][0], x1 = +_[1][0];
+ y0 = +_[0][1], y1 = +_[1][1];
+ if (x0 > x1) _ = x0, x0 = x1, x1 = _;
+ if (y0 > y1) _ = y0, y0 = y1, y1 = _;
+ return graticule.precision(precision);
+ };
+
+ graticule.step = function(_) {
+ if (!arguments.length) return graticule.stepMinor();
+ return graticule.stepMajor(_).stepMinor(_);
+ };
+
+ graticule.stepMajor = function(_) {
+ if (!arguments.length) return [DX, DY];
+ DX = +_[0], DY = +_[1];
+ return graticule;
+ };
+
+ graticule.stepMinor = function(_) {
+ if (!arguments.length) return [dx, dy];
+ dx = +_[0], dy = +_[1];
+ return graticule;
+ };
+
+ graticule.precision = function(_) {
+ if (!arguments.length) return precision;
+ precision = +_;
+ x = graticuleX(y0, y1, 90);
+ y = graticuleY(x0, x1, precision);
+ X = graticuleX(Y0, Y1, 90);
+ Y = graticuleY(X0, X1, precision);
+ return graticule;
+ };
+
+ return graticule
+ .extentMajor([[-180, -90 + epsilon], [180, 90 - epsilon]])
+ .extentMinor([[-180, -80 - epsilon], [180, 80 + epsilon]]);
+}
+
+export function graticule10() {
+ return graticule()();
+}
diff --git a/node_modules/d3-geo/src/identity.js b/node_modules/d3-geo/src/identity.js
new file mode 100644
index 00000000..9a800599
--- /dev/null
+++ b/node_modules/d3-geo/src/identity.js
@@ -0,0 +1 @@
+export default x => x;
diff --git a/node_modules/d3-geo/src/index.js b/node_modules/d3-geo/src/index.js
new file mode 100644
index 00000000..9a369763
--- /dev/null
+++ b/node_modules/d3-geo/src/index.js
@@ -0,0 +1,34 @@
+export {default as geoArea} from "./area.js";
+export {default as geoBounds} from "./bounds.js";
+export {default as geoCentroid} from "./centroid.js";
+export {default as geoCircle} from "./circle.js";
+export {default as geoClipAntimeridian} from "./clip/antimeridian.js";
+export {default as geoClipCircle} from "./clip/circle.js";
+export {default as geoClipExtent} from "./clip/extent.js"; // DEPRECATED! Use d3.geoIdentity().clipExtent(…).
+export {default as geoClipRectangle} from "./clip/rectangle.js";
+export {default as geoContains} from "./contains.js";
+export {default as geoDistance} from "./distance.js";
+export {default as geoGraticule, graticule10 as geoGraticule10} from "./graticule.js";
+export {default as geoInterpolate} from "./interpolate.js";
+export {default as geoLength} from "./length.js";
+export {default as geoPath} from "./path/index.js";
+export {default as geoAlbers} from "./projection/albers.js";
+export {default as geoAlbersUsa} from "./projection/albersUsa.js";
+export {default as geoAzimuthalEqualArea, azimuthalEqualAreaRaw as geoAzimuthalEqualAreaRaw} from "./projection/azimuthalEqualArea.js";
+export {default as geoAzimuthalEquidistant, azimuthalEquidistantRaw as geoAzimuthalEquidistantRaw} from "./projection/azimuthalEquidistant.js";
+export {default as geoConicConformal, conicConformalRaw as geoConicConformalRaw} from "./projection/conicConformal.js";
+export {default as geoConicEqualArea, conicEqualAreaRaw as geoConicEqualAreaRaw} from "./projection/conicEqualArea.js";
+export {default as geoConicEquidistant, conicEquidistantRaw as geoConicEquidistantRaw} from "./projection/conicEquidistant.js";
+export {default as geoEqualEarth, equalEarthRaw as geoEqualEarthRaw} from "./projection/equalEarth.js";
+export {default as geoEquirectangular, equirectangularRaw as geoEquirectangularRaw} from "./projection/equirectangular.js";
+export {default as geoGnomonic, gnomonicRaw as geoGnomonicRaw} from "./projection/gnomonic.js";
+export {default as geoIdentity} from "./projection/identity.js";
+export {default as geoProjection, projectionMutator as geoProjectionMutator} from "./projection/index.js";
+export {default as geoMercator, mercatorRaw as geoMercatorRaw} from "./projection/mercator.js";
+export {default as geoNaturalEarth1, naturalEarth1Raw as geoNaturalEarth1Raw} from "./projection/naturalEarth1.js";
+export {default as geoOrthographic, orthographicRaw as geoOrthographicRaw} from "./projection/orthographic.js";
+export {default as geoStereographic, stereographicRaw as geoStereographicRaw} from "./projection/stereographic.js";
+export {default as geoTransverseMercator, transverseMercatorRaw as geoTransverseMercatorRaw} from "./projection/transverseMercator.js";
+export {default as geoRotation} from "./rotation.js";
+export {default as geoStream} from "./stream.js";
+export {default as geoTransform} from "./transform.js";
diff --git a/node_modules/d3-geo/src/interpolate.js b/node_modules/d3-geo/src/interpolate.js
new file mode 100644
index 00000000..b19fbbaa
--- /dev/null
+++ b/node_modules/d3-geo/src/interpolate.js
@@ -0,0 +1,36 @@
+import {asin, atan2, cos, degrees, haversin, radians, sin, sqrt} from "./math.js";
+
+export default function(a, b) {
+ var x0 = a[0] * radians,
+ y0 = a[1] * radians,
+ x1 = b[0] * radians,
+ y1 = b[1] * radians,
+ cy0 = cos(y0),
+ sy0 = sin(y0),
+ cy1 = cos(y1),
+ sy1 = sin(y1),
+ kx0 = cy0 * cos(x0),
+ ky0 = cy0 * sin(x0),
+ kx1 = cy1 * cos(x1),
+ ky1 = cy1 * sin(x1),
+ d = 2 * asin(sqrt(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))),
+ k = sin(d);
+
+ var interpolate = d ? function(t) {
+ var B = sin(t *= d) / k,
+ A = sin(d - t) / k,
+ x = A * kx0 + B * kx1,
+ y = A * ky0 + B * ky1,
+ z = A * sy0 + B * sy1;
+ return [
+ atan2(y, x) * degrees,
+ atan2(z, sqrt(x * x + y * y)) * degrees
+ ];
+ } : function() {
+ return [x0 * degrees, y0 * degrees];
+ };
+
+ interpolate.distance = d;
+
+ return interpolate;
+}
diff --git a/node_modules/d3-geo/src/length.js b/node_modules/d3-geo/src/length.js
new file mode 100644
index 00000000..7899e053
--- /dev/null
+++ b/node_modules/d3-geo/src/length.js
@@ -0,0 +1,53 @@
+import {Adder} from "d3-array";
+import {abs, atan2, cos, radians, sin, sqrt} from "./math.js";
+import noop from "./noop.js";
+import stream from "./stream.js";
+
+var lengthSum,
+ lambda0,
+ sinPhi0,
+ cosPhi0;
+
+var lengthStream = {
+ sphere: noop,
+ point: noop,
+ lineStart: lengthLineStart,
+ lineEnd: noop,
+ polygonStart: noop,
+ polygonEnd: noop
+};
+
+function lengthLineStart() {
+ lengthStream.point = lengthPointFirst;
+ lengthStream.lineEnd = lengthLineEnd;
+}
+
+function lengthLineEnd() {
+ lengthStream.point = lengthStream.lineEnd = noop;
+}
+
+function lengthPointFirst(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ lambda0 = lambda, sinPhi0 = sin(phi), cosPhi0 = cos(phi);
+ lengthStream.point = lengthPoint;
+}
+
+function lengthPoint(lambda, phi) {
+ lambda *= radians, phi *= radians;
+ var sinPhi = sin(phi),
+ cosPhi = cos(phi),
+ delta = abs(lambda - lambda0),
+ cosDelta = cos(delta),
+ sinDelta = sin(delta),
+ x = cosPhi * sinDelta,
+ y = cosPhi0 * sinPhi - sinPhi0 * cosPhi * cosDelta,
+ z = sinPhi0 * sinPhi + cosPhi0 * cosPhi * cosDelta;
+ lengthSum.add(atan2(sqrt(x * x + y * y), z));
+ lambda0 = lambda, sinPhi0 = sinPhi, cosPhi0 = cosPhi;
+}
+
+export default function(object) {
+ lengthSum = new Adder();
+ stream(object, lengthStream);
+ return +lengthSum;
+}
diff --git a/node_modules/d3-geo/src/math.js b/node_modules/d3-geo/src/math.js
new file mode 100644
index 00000000..ace500ff
--- /dev/null
+++ b/node_modules/d3-geo/src/math.js
@@ -0,0 +1,36 @@
+export var epsilon = 1e-6;
+export var epsilon2 = 1e-12;
+export var pi = Math.PI;
+export var halfPi = pi / 2;
+export var quarterPi = pi / 4;
+export var tau = pi * 2;
+
+export var degrees = 180 / pi;
+export var radians = pi / 180;
+
+export var abs = Math.abs;
+export var atan = Math.atan;
+export var atan2 = Math.atan2;
+export var cos = Math.cos;
+export var ceil = Math.ceil;
+export var exp = Math.exp;
+export var floor = Math.floor;
+export var hypot = Math.hypot;
+export var log = Math.log;
+export var pow = Math.pow;
+export var sin = Math.sin;
+export var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; };
+export var sqrt = Math.sqrt;
+export var tan = Math.tan;
+
+export function acos(x) {
+ return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);
+}
+
+export function asin(x) {
+ return x > 1 ? halfPi : x < -1 ? -halfPi : Math.asin(x);
+}
+
+export function haversin(x) {
+ return (x = sin(x / 2)) * x;
+}
diff --git a/node_modules/d3-geo/src/noop.js b/node_modules/d3-geo/src/noop.js
new file mode 100644
index 00000000..ca6a7447
--- /dev/null
+++ b/node_modules/d3-geo/src/noop.js
@@ -0,0 +1 @@
+export default function noop() {}
diff --git a/node_modules/d3-geo/src/path/area.js b/node_modules/d3-geo/src/path/area.js
new file mode 100644
index 00000000..bb38b196
--- /dev/null
+++ b/node_modules/d3-geo/src/path/area.js
@@ -0,0 +1,50 @@
+import {Adder} from "d3-array";
+import {abs} from "../math.js";
+import noop from "../noop.js";
+
+var areaSum = new Adder(),
+ areaRingSum = new Adder(),
+ x00,
+ y00,
+ x0,
+ y0;
+
+var areaStream = {
+ point: noop,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: function() {
+ areaStream.lineStart = areaRingStart;
+ areaStream.lineEnd = areaRingEnd;
+ },
+ polygonEnd: function() {
+ areaStream.lineStart = areaStream.lineEnd = areaStream.point = noop;
+ areaSum.add(abs(areaRingSum));
+ areaRingSum = new Adder();
+ },
+ result: function() {
+ var area = areaSum / 2;
+ areaSum = new Adder();
+ return area;
+ }
+};
+
+function areaRingStart() {
+ areaStream.point = areaPointFirst;
+}
+
+function areaPointFirst(x, y) {
+ areaStream.point = areaPoint;
+ x00 = x0 = x, y00 = y0 = y;
+}
+
+function areaPoint(x, y) {
+ areaRingSum.add(y0 * x - x0 * y);
+ x0 = x, y0 = y;
+}
+
+function areaRingEnd() {
+ areaPoint(x00, y00);
+}
+
+export default areaStream;
diff --git a/node_modules/d3-geo/src/path/bounds.js b/node_modules/d3-geo/src/path/bounds.js
new file mode 100644
index 00000000..0c83258a
--- /dev/null
+++ b/node_modules/d3-geo/src/path/bounds.js
@@ -0,0 +1,28 @@
+import noop from "../noop.js";
+
+var x0 = Infinity,
+ y0 = x0,
+ x1 = -x0,
+ y1 = x1;
+
+var boundsStream = {
+ point: boundsPoint,
+ lineStart: noop,
+ lineEnd: noop,
+ polygonStart: noop,
+ polygonEnd: noop,
+ result: function() {
+ var bounds = [[x0, y0], [x1, y1]];
+ x1 = y1 = -(y0 = x0 = Infinity);
+ return bounds;
+ }
+};
+
+function boundsPoint(x, y) {
+ if (x < x0) x0 = x;
+ if (x > x1) x1 = x;
+ if (y < y0) y0 = y;
+ if (y > y1) y1 = y;
+}
+
+export default boundsStream;
diff --git a/node_modules/d3-geo/src/path/centroid.js b/node_modules/d3-geo/src/path/centroid.js
new file mode 100644
index 00000000..852ef767
--- /dev/null
+++ b/node_modules/d3-geo/src/path/centroid.js
@@ -0,0 +1,100 @@
+import {sqrt} from "../math.js";
+
+// TODO Enforce positive area for exterior, negative area for interior?
+
+var X0 = 0,
+ Y0 = 0,
+ Z0 = 0,
+ X1 = 0,
+ Y1 = 0,
+ Z1 = 0,
+ X2 = 0,
+ Y2 = 0,
+ Z2 = 0,
+ x00,
+ y00,
+ x0,
+ y0;
+
+var centroidStream = {
+ point: centroidPoint,
+ lineStart: centroidLineStart,
+ lineEnd: centroidLineEnd,
+ polygonStart: function() {
+ centroidStream.lineStart = centroidRingStart;
+ centroidStream.lineEnd = centroidRingEnd;
+ },
+ polygonEnd: function() {
+ centroidStream.point = centroidPoint;
+ centroidStream.lineStart = centroidLineStart;
+ centroidStream.lineEnd = centroidLineEnd;
+ },
+ result: function() {
+ var centroid = Z2 ? [X2 / Z2, Y2 / Z2]
+ : Z1 ? [X1 / Z1, Y1 / Z1]
+ : Z0 ? [X0 / Z0, Y0 / Z0]
+ : [NaN, NaN];
+ X0 = Y0 = Z0 =
+ X1 = Y1 = Z1 =
+ X2 = Y2 = Z2 = 0;
+ return centroid;
+ }
+};
+
+function centroidPoint(x, y) {
+ X0 += x;
+ Y0 += y;
+ ++Z0;
+}
+
+function centroidLineStart() {
+ centroidStream.point = centroidPointFirstLine;
+}
+
+function centroidPointFirstLine(x, y) {
+ centroidStream.point = centroidPointLine;
+ centroidPoint(x0 = x, y0 = y);
+}
+
+function centroidPointLine(x, y) {
+ var dx = x - x0, dy = y - y0, z = sqrt(dx * dx + dy * dy);
+ X1 += z * (x0 + x) / 2;
+ Y1 += z * (y0 + y) / 2;
+ Z1 += z;
+ centroidPoint(x0 = x, y0 = y);
+}
+
+function centroidLineEnd() {
+ centroidStream.point = centroidPoint;
+}
+
+function centroidRingStart() {
+ centroidStream.point = centroidPointFirstRing;
+}
+
+function centroidRingEnd() {
+ centroidPointRing(x00, y00);
+}
+
+function centroidPointFirstRing(x, y) {
+ centroidStream.point = centroidPointRing;
+ centroidPoint(x00 = x0 = x, y00 = y0 = y);
+}
+
+function centroidPointRing(x, y) {
+ var dx = x - x0,
+ dy = y - y0,
+ z = sqrt(dx * dx + dy * dy);
+
+ X1 += z * (x0 + x) / 2;
+ Y1 += z * (y0 + y) / 2;
+ Z1 += z;
+
+ z = y0 * x - x0 * y;
+ X2 += z * (x0 + x);
+ Y2 += z * (y0 + y);
+ Z2 += z * 3;
+ centroidPoint(x0 = x, y0 = y);
+}
+
+export default centroidStream;
diff --git a/node_modules/d3-geo/src/path/context.js b/node_modules/d3-geo/src/path/context.js
new file mode 100644
index 00000000..5137fc93
--- /dev/null
+++ b/node_modules/d3-geo/src/path/context.js
@@ -0,0 +1,45 @@
+import {tau} from "../math.js";
+import noop from "../noop.js";
+
+export default function PathContext(context) {
+ this._context = context;
+}
+
+PathContext.prototype = {
+ _radius: 4.5,
+ pointRadius: function(_) {
+ return this._radius = _, this;
+ },
+ polygonStart: function() {
+ this._line = 0;
+ },
+ polygonEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line === 0) this._context.closePath();
+ this._point = NaN;
+ },
+ point: function(x, y) {
+ switch (this._point) {
+ case 0: {
+ this._context.moveTo(x, y);
+ this._point = 1;
+ break;
+ }
+ case 1: {
+ this._context.lineTo(x, y);
+ break;
+ }
+ default: {
+ this._context.moveTo(x + this._radius, y);
+ this._context.arc(x, y, this._radius, 0, tau);
+ break;
+ }
+ }
+ },
+ result: noop
+};
diff --git a/node_modules/d3-geo/src/path/index.js b/node_modules/d3-geo/src/path/index.js
new file mode 100644
index 00000000..45da3058
--- /dev/null
+++ b/node_modules/d3-geo/src/path/index.js
@@ -0,0 +1,61 @@
+import identity from "../identity.js";
+import stream from "../stream.js";
+import pathArea from "./area.js";
+import pathBounds from "./bounds.js";
+import pathCentroid from "./centroid.js";
+import PathContext from "./context.js";
+import pathMeasure from "./measure.js";
+import PathString from "./string.js";
+
+export default function(projection, context) {
+ var pointRadius = 4.5,
+ projectionStream,
+ contextStream;
+
+ function path(object) {
+ if (object) {
+ if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
+ stream(object, projectionStream(contextStream));
+ }
+ return contextStream.result();
+ }
+
+ path.area = function(object) {
+ stream(object, projectionStream(pathArea));
+ return pathArea.result();
+ };
+
+ path.measure = function(object) {
+ stream(object, projectionStream(pathMeasure));
+ return pathMeasure.result();
+ };
+
+ path.bounds = function(object) {
+ stream(object, projectionStream(pathBounds));
+ return pathBounds.result();
+ };
+
+ path.centroid = function(object) {
+ stream(object, projectionStream(pathCentroid));
+ return pathCentroid.result();
+ };
+
+ path.projection = function(_) {
+ return arguments.length ? (projectionStream = _ == null ? (projection = null, identity) : (projection = _).stream, path) : projection;
+ };
+
+ path.context = function(_) {
+ if (!arguments.length) return context;
+ contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _);
+ if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
+ return path;
+ };
+
+ path.pointRadius = function(_) {
+ if (!arguments.length) return pointRadius;
+ pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
+ return path;
+ };
+
+ return path.projection(projection).context(context);
+}
diff --git a/node_modules/d3-geo/src/path/measure.js b/node_modules/d3-geo/src/path/measure.js
new file mode 100644
index 00000000..ad4177a7
--- /dev/null
+++ b/node_modules/d3-geo/src/path/measure.js
@@ -0,0 +1,45 @@
+import {Adder} from "d3-array";
+import {sqrt} from "../math.js";
+import noop from "../noop.js";
+
+var lengthSum = new Adder(),
+ lengthRing,
+ x00,
+ y00,
+ x0,
+ y0;
+
+var lengthStream = {
+ point: noop,
+ lineStart: function() {
+ lengthStream.point = lengthPointFirst;
+ },
+ lineEnd: function() {
+ if (lengthRing) lengthPoint(x00, y00);
+ lengthStream.point = noop;
+ },
+ polygonStart: function() {
+ lengthRing = true;
+ },
+ polygonEnd: function() {
+ lengthRing = null;
+ },
+ result: function() {
+ var length = +lengthSum;
+ lengthSum = new Adder();
+ return length;
+ }
+};
+
+function lengthPointFirst(x, y) {
+ lengthStream.point = lengthPoint;
+ x00 = x0 = x, y00 = y0 = y;
+}
+
+function lengthPoint(x, y) {
+ x0 -= x, y0 -= y;
+ lengthSum.add(sqrt(x0 * x0 + y0 * y0));
+ x0 = x, y0 = y;
+}
+
+export default lengthStream;
diff --git a/node_modules/d3-geo/src/path/string.js b/node_modules/d3-geo/src/path/string.js
new file mode 100644
index 00000000..02e57b0a
--- /dev/null
+++ b/node_modules/d3-geo/src/path/string.js
@@ -0,0 +1,59 @@
+export default function PathString() {
+ this._string = [];
+}
+
+PathString.prototype = {
+ _radius: 4.5,
+ _circle: circle(4.5),
+ pointRadius: function(_) {
+ if ((_ = +_) !== this._radius) this._radius = _, this._circle = null;
+ return this;
+ },
+ polygonStart: function() {
+ this._line = 0;
+ },
+ polygonEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line === 0) this._string.push("Z");
+ this._point = NaN;
+ },
+ point: function(x, y) {
+ switch (this._point) {
+ case 0: {
+ this._string.push("M", x, ",", y);
+ this._point = 1;
+ break;
+ }
+ case 1: {
+ this._string.push("L", x, ",", y);
+ break;
+ }
+ default: {
+ if (this._circle == null) this._circle = circle(this._radius);
+ this._string.push("M", x, ",", y, this._circle);
+ break;
+ }
+ }
+ },
+ result: function() {
+ if (this._string.length) {
+ var result = this._string.join("");
+ this._string = [];
+ return result;
+ } else {
+ return null;
+ }
+ }
+};
+
+function circle(radius) {
+ return "m0," + radius
+ + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius
+ + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius
+ + "z";
+}
diff --git a/node_modules/d3-geo/src/pointEqual.js b/node_modules/d3-geo/src/pointEqual.js
new file mode 100644
index 00000000..d25aa115
--- /dev/null
+++ b/node_modules/d3-geo/src/pointEqual.js
@@ -0,0 +1,5 @@
+import {abs, epsilon} from "./math.js";
+
+export default function(a, b) {
+ return abs(a[0] - b[0]) < epsilon && abs(a[1] - b[1]) < epsilon;
+}
diff --git a/node_modules/d3-geo/src/polygonContains.js b/node_modules/d3-geo/src/polygonContains.js
new file mode 100644
index 00000000..59baee7f
--- /dev/null
+++ b/node_modules/d3-geo/src/polygonContains.js
@@ -0,0 +1,74 @@
+import {Adder} from "d3-array";
+import {cartesian, cartesianCross, cartesianNormalizeInPlace} from "./cartesian.js";
+import {abs, asin, atan2, cos, epsilon, epsilon2, halfPi, pi, quarterPi, sign, sin, tau} from "./math.js";
+
+function longitude(point) {
+ return abs(point[0]) <= pi ? point[0] : sign(point[0]) * ((abs(point[0]) + pi) % tau - pi);
+}
+
+export default function(polygon, point) {
+ var lambda = longitude(point),
+ phi = point[1],
+ sinPhi = sin(phi),
+ normal = [sin(lambda), -cos(lambda), 0],
+ angle = 0,
+ winding = 0;
+
+ var sum = new Adder();
+
+ if (sinPhi === 1) phi = halfPi + epsilon;
+ else if (sinPhi === -1) phi = -halfPi - epsilon;
+
+ for (var i = 0, n = polygon.length; i < n; ++i) {
+ if (!(m = (ring = polygon[i]).length)) continue;
+ var ring,
+ m,
+ point0 = ring[m - 1],
+ lambda0 = longitude(point0),
+ phi0 = point0[1] / 2 + quarterPi,
+ sinPhi0 = sin(phi0),
+ cosPhi0 = cos(phi0);
+
+ for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) {
+ var point1 = ring[j],
+ lambda1 = longitude(point1),
+ phi1 = point1[1] / 2 + quarterPi,
+ sinPhi1 = sin(phi1),
+ cosPhi1 = cos(phi1),
+ delta = lambda1 - lambda0,
+ sign = delta >= 0 ? 1 : -1,
+ absDelta = sign * delta,
+ antimeridian = absDelta > pi,
+ k = sinPhi0 * sinPhi1;
+
+ sum.add(atan2(k * sign * sin(absDelta), cosPhi0 * cosPhi1 + k * cos(absDelta)));
+ angle += antimeridian ? delta + sign * tau : delta;
+
+ // Are the longitudes either side of the point’s meridian (lambda),
+ // and are the latitudes smaller than the parallel (phi)?
+ if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) {
+ var arc = cartesianCross(cartesian(point0), cartesian(point1));
+ cartesianNormalizeInPlace(arc);
+ var intersection = cartesianCross(normal, arc);
+ cartesianNormalizeInPlace(intersection);
+ var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin(intersection[2]);
+ if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) {
+ winding += antimeridian ^ delta >= 0 ? 1 : -1;
+ }
+ }
+ }
+ }
+
+ // First, determine whether the South pole is inside or outside:
+ //
+ // It is inside if:
+ // * the polygon winds around it in a clockwise direction.
+ // * the polygon does not (cumulatively) wind around it, but has a negative
+ // (counter-clockwise) area.
+ //
+ // Second, count the (signed) number of times a segment crosses a lambda
+ // from the point to the South pole. If it is zero, then the point is the
+ // same side as the South pole.
+
+ return (angle < -epsilon || angle < epsilon && sum < -epsilon2) ^ (winding & 1);
+}
diff --git a/node_modules/d3-geo/src/projection/albers.js b/node_modules/d3-geo/src/projection/albers.js
new file mode 100644
index 00000000..180425dc
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/albers.js
@@ -0,0 +1,10 @@
+import conicEqualArea from "./conicEqualArea.js";
+
+export default function() {
+ return conicEqualArea()
+ .parallels([29.5, 45.5])
+ .scale(1070)
+ .translate([480, 250])
+ .rotate([96, 0])
+ .center([-0.6, 38.7]);
+}
diff --git a/node_modules/d3-geo/src/projection/albersUsa.js b/node_modules/d3-geo/src/projection/albersUsa.js
new file mode 100644
index 00000000..fd295ed4
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/albersUsa.js
@@ -0,0 +1,111 @@
+import {epsilon} from "../math.js";
+import albers from "./albers.js";
+import conicEqualArea from "./conicEqualArea.js";
+import {fitExtent, fitSize, fitWidth, fitHeight} from "./fit.js";
+
+// The projections must have mutually exclusive clip regions on the sphere,
+// as this will avoid emitting interleaving lines and polygons.
+function multiplex(streams) {
+ var n = streams.length;
+ return {
+ point: function(x, y) { var i = -1; while (++i < n) streams[i].point(x, y); },
+ sphere: function() { var i = -1; while (++i < n) streams[i].sphere(); },
+ lineStart: function() { var i = -1; while (++i < n) streams[i].lineStart(); },
+ lineEnd: function() { var i = -1; while (++i < n) streams[i].lineEnd(); },
+ polygonStart: function() { var i = -1; while (++i < n) streams[i].polygonStart(); },
+ polygonEnd: function() { var i = -1; while (++i < n) streams[i].polygonEnd(); }
+ };
+}
+
+// A composite projection for the United States, configured by default for
+// 960×500. The projection also works quite well at 960×600 if you change the
+// scale to 1285 and adjust the translate accordingly. The set of standard
+// parallels for each region comes from USGS, which is published here:
+// http://egsc.usgs.gov/isb/pubs/MapProjections/projections.html#albers
+export default function() {
+ var cache,
+ cacheStream,
+ lower48 = albers(), lower48Point,
+ alaska = conicEqualArea().rotate([154, 0]).center([-2, 58.5]).parallels([55, 65]), alaskaPoint, // EPSG:3338
+ hawaii = conicEqualArea().rotate([157, 0]).center([-3, 19.9]).parallels([8, 18]), hawaiiPoint, // ESRI:102007
+ point, pointStream = {point: function(x, y) { point = [x, y]; }};
+
+ function albersUsa(coordinates) {
+ var x = coordinates[0], y = coordinates[1];
+ return point = null,
+ (lower48Point.point(x, y), point)
+ || (alaskaPoint.point(x, y), point)
+ || (hawaiiPoint.point(x, y), point);
+ }
+
+ albersUsa.invert = function(coordinates) {
+ var k = lower48.scale(),
+ t = lower48.translate(),
+ x = (coordinates[0] - t[0]) / k,
+ y = (coordinates[1] - t[1]) / k;
+ return (y >= 0.120 && y < 0.234 && x >= -0.425 && x < -0.214 ? alaska
+ : y >= 0.166 && y < 0.234 && x >= -0.214 && x < -0.115 ? hawaii
+ : lower48).invert(coordinates);
+ };
+
+ albersUsa.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = multiplex([lower48.stream(cacheStream = stream), alaska.stream(stream), hawaii.stream(stream)]);
+ };
+
+ albersUsa.precision = function(_) {
+ if (!arguments.length) return lower48.precision();
+ lower48.precision(_), alaska.precision(_), hawaii.precision(_);
+ return reset();
+ };
+
+ albersUsa.scale = function(_) {
+ if (!arguments.length) return lower48.scale();
+ lower48.scale(_), alaska.scale(_ * 0.35), hawaii.scale(_);
+ return albersUsa.translate(lower48.translate());
+ };
+
+ albersUsa.translate = function(_) {
+ if (!arguments.length) return lower48.translate();
+ var k = lower48.scale(), x = +_[0], y = +_[1];
+
+ lower48Point = lower48
+ .translate(_)
+ .clipExtent([[x - 0.455 * k, y - 0.238 * k], [x + 0.455 * k, y + 0.238 * k]])
+ .stream(pointStream);
+
+ alaskaPoint = alaska
+ .translate([x - 0.307 * k, y + 0.201 * k])
+ .clipExtent([[x - 0.425 * k + epsilon, y + 0.120 * k + epsilon], [x - 0.214 * k - epsilon, y + 0.234 * k - epsilon]])
+ .stream(pointStream);
+
+ hawaiiPoint = hawaii
+ .translate([x - 0.205 * k, y + 0.212 * k])
+ .clipExtent([[x - 0.214 * k + epsilon, y + 0.166 * k + epsilon], [x - 0.115 * k - epsilon, y + 0.234 * k - epsilon]])
+ .stream(pointStream);
+
+ return reset();
+ };
+
+ albersUsa.fitExtent = function(extent, object) {
+ return fitExtent(albersUsa, extent, object);
+ };
+
+ albersUsa.fitSize = function(size, object) {
+ return fitSize(albersUsa, size, object);
+ };
+
+ albersUsa.fitWidth = function(width, object) {
+ return fitWidth(albersUsa, width, object);
+ };
+
+ albersUsa.fitHeight = function(height, object) {
+ return fitHeight(albersUsa, height, object);
+ };
+
+ function reset() {
+ cache = cacheStream = null;
+ return albersUsa;
+ }
+
+ return albersUsa.scale(1070);
+}
diff --git a/node_modules/d3-geo/src/projection/azimuthal.js b/node_modules/d3-geo/src/projection/azimuthal.js
new file mode 100644
index 00000000..22dffe7c
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/azimuthal.js
@@ -0,0 +1,27 @@
+import {asin, atan2, cos, sin, sqrt} from "../math.js";
+
+export function azimuthalRaw(scale) {
+ return function(x, y) {
+ var cx = cos(x),
+ cy = cos(y),
+ k = scale(cx * cy);
+ if (k === Infinity) return [2, 0];
+ return [
+ k * cy * sin(x),
+ k * sin(y)
+ ];
+ }
+}
+
+export function azimuthalInvert(angle) {
+ return function(x, y) {
+ var z = sqrt(x * x + y * y),
+ c = angle(z),
+ sc = sin(c),
+ cc = cos(c);
+ return [
+ atan2(x * sc, z * cc),
+ asin(z && y * sc / z)
+ ];
+ }
+}
diff --git a/node_modules/d3-geo/src/projection/azimuthalEqualArea.js b/node_modules/d3-geo/src/projection/azimuthalEqualArea.js
new file mode 100644
index 00000000..795d4c72
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/azimuthalEqualArea.js
@@ -0,0 +1,17 @@
+import {asin, sqrt} from "../math.js";
+import {azimuthalRaw, azimuthalInvert} from "./azimuthal.js";
+import projection from "./index.js";
+
+export var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) {
+ return sqrt(2 / (1 + cxcy));
+});
+
+azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) {
+ return 2 * asin(z / 2);
+});
+
+export default function() {
+ return projection(azimuthalEqualAreaRaw)
+ .scale(124.75)
+ .clipAngle(180 - 1e-3);
+}
diff --git a/node_modules/d3-geo/src/projection/azimuthalEquidistant.js b/node_modules/d3-geo/src/projection/azimuthalEquidistant.js
new file mode 100644
index 00000000..9b89eb9e
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/azimuthalEquidistant.js
@@ -0,0 +1,17 @@
+import {acos, sin} from "../math.js";
+import {azimuthalRaw, azimuthalInvert} from "./azimuthal.js";
+import projection from "./index.js";
+
+export var azimuthalEquidistantRaw = azimuthalRaw(function(c) {
+ return (c = acos(c)) && c / sin(c);
+});
+
+azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) {
+ return z;
+});
+
+export default function() {
+ return projection(azimuthalEquidistantRaw)
+ .scale(79.4188)
+ .clipAngle(180 - 1e-3);
+}
diff --git a/node_modules/d3-geo/src/projection/conic.js b/node_modules/d3-geo/src/projection/conic.js
new file mode 100644
index 00000000..81c5744b
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/conic.js
@@ -0,0 +1,15 @@
+import {degrees, pi, radians} from "../math.js";
+import {projectionMutator} from "./index.js";
+
+export function conicProjection(projectAt) {
+ var phi0 = 0,
+ phi1 = pi / 3,
+ m = projectionMutator(projectAt),
+ p = m(phi0, phi1);
+
+ p.parallels = function(_) {
+ return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees, phi1 * degrees];
+ };
+
+ return p;
+}
diff --git a/node_modules/d3-geo/src/projection/conicConformal.js b/node_modules/d3-geo/src/projection/conicConformal.js
new file mode 100644
index 00000000..adf73da2
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/conicConformal.js
@@ -0,0 +1,38 @@
+import {abs, atan, atan2, cos, epsilon, halfPi, log, pi, pow, sign, sin, sqrt, tan} from "../math.js";
+import {conicProjection} from "./conic.js";
+import {mercatorRaw} from "./mercator.js";
+
+function tany(y) {
+ return tan((halfPi + y) / 2);
+}
+
+export function conicConformalRaw(y0, y1) {
+ var cy0 = cos(y0),
+ n = y0 === y1 ? sin(y0) : log(cy0 / cos(y1)) / log(tany(y1) / tany(y0)),
+ f = cy0 * pow(tany(y0), n) / n;
+
+ if (!n) return mercatorRaw;
+
+ function project(x, y) {
+ if (f > 0) { if (y < -halfPi + epsilon) y = -halfPi + epsilon; }
+ else { if (y > halfPi - epsilon) y = halfPi - epsilon; }
+ var r = f / pow(tany(y), n);
+ return [r * sin(n * x), f - r * cos(n * x)];
+ }
+
+ project.invert = function(x, y) {
+ var fy = f - y, r = sign(n) * sqrt(x * x + fy * fy),
+ l = atan2(x, abs(fy)) * sign(fy);
+ if (fy * n < 0)
+ l -= pi * sign(x) * sign(fy);
+ return [l / n, 2 * atan(pow(f / r, 1 / n)) - halfPi];
+ };
+
+ return project;
+}
+
+export default function() {
+ return conicProjection(conicConformalRaw)
+ .scale(109.5)
+ .parallels([30, 30]);
+}
diff --git a/node_modules/d3-geo/src/projection/conicEqualArea.js b/node_modules/d3-geo/src/projection/conicEqualArea.js
new file mode 100644
index 00000000..b4238e47
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/conicEqualArea.js
@@ -0,0 +1,33 @@
+import {abs, asin, atan2, cos, epsilon, pi, sign, sin, sqrt} from "../math.js";
+import {conicProjection} from "./conic.js";
+import {cylindricalEqualAreaRaw} from "./cylindricalEqualArea.js";
+
+export function conicEqualAreaRaw(y0, y1) {
+ var sy0 = sin(y0), n = (sy0 + sin(y1)) / 2;
+
+ // Are the parallels symmetrical around the Equator?
+ if (abs(n) < epsilon) return cylindricalEqualAreaRaw(y0);
+
+ var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt(c) / n;
+
+ function project(x, y) {
+ var r = sqrt(c - 2 * n * sin(y)) / n;
+ return [r * sin(x *= n), r0 - r * cos(x)];
+ }
+
+ project.invert = function(x, y) {
+ var r0y = r0 - y,
+ l = atan2(x, abs(r0y)) * sign(r0y);
+ if (r0y * n < 0)
+ l -= pi * sign(x) * sign(r0y);
+ return [l / n, asin((c - (x * x + r0y * r0y) * n * n) / (2 * n))];
+ };
+
+ return project;
+}
+
+export default function() {
+ return conicProjection(conicEqualAreaRaw)
+ .scale(155.424)
+ .center([0, 33.6442]);
+}
diff --git a/node_modules/d3-geo/src/projection/conicEquidistant.js b/node_modules/d3-geo/src/projection/conicEquidistant.js
new file mode 100644
index 00000000..796710e7
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/conicEquidistant.js
@@ -0,0 +1,32 @@
+import {abs, atan2, cos, epsilon, pi, sign, sin, sqrt} from "../math.js";
+import {conicProjection} from "./conic.js";
+import {equirectangularRaw} from "./equirectangular.js";
+
+export function conicEquidistantRaw(y0, y1) {
+ var cy0 = cos(y0),
+ n = y0 === y1 ? sin(y0) : (cy0 - cos(y1)) / (y1 - y0),
+ g = cy0 / n + y0;
+
+ if (abs(n) < epsilon) return equirectangularRaw;
+
+ function project(x, y) {
+ var gy = g - y, nx = n * x;
+ return [gy * sin(nx), g - gy * cos(nx)];
+ }
+
+ project.invert = function(x, y) {
+ var gy = g - y,
+ l = atan2(x, abs(gy)) * sign(gy);
+ if (gy * n < 0)
+ l -= pi * sign(x) * sign(gy);
+ return [l / n, g - sign(n) * sqrt(x * x + gy * gy)];
+ };
+
+ return project;
+}
+
+export default function() {
+ return conicProjection(conicEquidistantRaw)
+ .scale(131.154)
+ .center([0, 13.9389]);
+}
diff --git a/node_modules/d3-geo/src/projection/cylindricalEqualArea.js b/node_modules/d3-geo/src/projection/cylindricalEqualArea.js
new file mode 100644
index 00000000..1d38b40c
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/cylindricalEqualArea.js
@@ -0,0 +1,15 @@
+import {asin, cos, sin} from "../math.js";
+
+export function cylindricalEqualAreaRaw(phi0) {
+ var cosPhi0 = cos(phi0);
+
+ function forward(lambda, phi) {
+ return [lambda * cosPhi0, sin(phi) / cosPhi0];
+ }
+
+ forward.invert = function(x, y) {
+ return [x / cosPhi0, asin(y * cosPhi0)];
+ };
+
+ return forward;
+}
diff --git a/node_modules/d3-geo/src/projection/equalEarth.js b/node_modules/d3-geo/src/projection/equalEarth.js
new file mode 100644
index 00000000..dc5ce2cb
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/equalEarth.js
@@ -0,0 +1,36 @@
+import projection from "./index.js";
+import {abs, asin, cos, epsilon2, sin, sqrt} from "../math.js";
+
+var A1 = 1.340264,
+ A2 = -0.081106,
+ A3 = 0.000893,
+ A4 = 0.003796,
+ M = sqrt(3) / 2,
+ iterations = 12;
+
+export function equalEarthRaw(lambda, phi) {
+ var l = asin(M * sin(phi)), l2 = l * l, l6 = l2 * l2 * l2;
+ return [
+ lambda * cos(l) / (M * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2))),
+ l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2))
+ ];
+}
+
+equalEarthRaw.invert = function(x, y) {
+ var l = y, l2 = l * l, l6 = l2 * l2 * l2;
+ for (var i = 0, delta, fy, fpy; i < iterations; ++i) {
+ fy = l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) - y;
+ fpy = A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2);
+ l -= delta = fy / fpy, l2 = l * l, l6 = l2 * l2 * l2;
+ if (abs(delta) < epsilon2) break;
+ }
+ return [
+ M * x * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2)) / cos(l),
+ asin(sin(l) / M)
+ ];
+};
+
+export default function() {
+ return projection(equalEarthRaw)
+ .scale(177.158);
+}
diff --git a/node_modules/d3-geo/src/projection/equirectangular.js b/node_modules/d3-geo/src/projection/equirectangular.js
new file mode 100644
index 00000000..d47065c3
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/equirectangular.js
@@ -0,0 +1,12 @@
+import projection from "./index.js";
+
+export function equirectangularRaw(lambda, phi) {
+ return [lambda, phi];
+}
+
+equirectangularRaw.invert = equirectangularRaw;
+
+export default function() {
+ return projection(equirectangularRaw)
+ .scale(152.63);
+}
diff --git a/node_modules/d3-geo/src/projection/fit.js b/node_modules/d3-geo/src/projection/fit.js
new file mode 100644
index 00000000..d496d0fb
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/fit.js
@@ -0,0 +1,47 @@
+import {default as geoStream} from "../stream.js";
+import boundsStream from "../path/bounds.js";
+
+function fit(projection, fitBounds, object) {
+ var clip = projection.clipExtent && projection.clipExtent();
+ projection.scale(150).translate([0, 0]);
+ if (clip != null) projection.clipExtent(null);
+ geoStream(object, projection.stream(boundsStream));
+ fitBounds(boundsStream.result());
+ if (clip != null) projection.clipExtent(clip);
+ return projection;
+}
+
+export function fitExtent(projection, extent, object) {
+ return fit(projection, function(b) {
+ var w = extent[1][0] - extent[0][0],
+ h = extent[1][1] - extent[0][1],
+ k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])),
+ x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2,
+ y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2;
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
+
+export function fitSize(projection, size, object) {
+ return fitExtent(projection, [[0, 0], size], object);
+}
+
+export function fitWidth(projection, width, object) {
+ return fit(projection, function(b) {
+ var w = +width,
+ k = w / (b[1][0] - b[0][0]),
+ x = (w - k * (b[1][0] + b[0][0])) / 2,
+ y = -k * b[0][1];
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
+
+export function fitHeight(projection, height, object) {
+ return fit(projection, function(b) {
+ var h = +height,
+ k = h / (b[1][1] - b[0][1]),
+ x = -k * b[0][0],
+ y = (h - k * (b[1][1] + b[0][1])) / 2;
+ projection.scale(150 * k).translate([x, y]);
+ }, object);
+}
diff --git a/node_modules/d3-geo/src/projection/gnomonic.js b/node_modules/d3-geo/src/projection/gnomonic.js
new file mode 100644
index 00000000..5da1cc79
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/gnomonic.js
@@ -0,0 +1,16 @@
+import {atan, cos, sin} from "../math.js";
+import {azimuthalInvert} from "./azimuthal.js";
+import projection from "./index.js";
+
+export function gnomonicRaw(x, y) {
+ var cy = cos(y), k = cos(x) * cy;
+ return [cy * sin(x) / k, sin(y) / k];
+}
+
+gnomonicRaw.invert = azimuthalInvert(atan);
+
+export default function() {
+ return projection(gnomonicRaw)
+ .scale(144.049)
+ .clipAngle(60);
+}
diff --git a/node_modules/d3-geo/src/projection/identity.js b/node_modules/d3-geo/src/projection/identity.js
new file mode 100644
index 00000000..cc439d8c
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/identity.js
@@ -0,0 +1,85 @@
+import clipRectangle from "../clip/rectangle.js";
+import identity from "../identity.js";
+import {transformer} from "../transform.js";
+import {fitExtent, fitSize, fitWidth, fitHeight} from "./fit.js";
+import {cos, degrees, radians, sin} from "../math.js";
+
+export default function() {
+ var k = 1, tx = 0, ty = 0, sx = 1, sy = 1, // scale, translate and reflect
+ alpha = 0, ca, sa, // angle
+ x0 = null, y0, x1, y1, // clip extent
+ kx = 1, ky = 1,
+ transform = transformer({
+ point: function(x, y) {
+ var p = projection([x, y])
+ this.stream.point(p[0], p[1]);
+ }
+ }),
+ postclip = identity,
+ cache,
+ cacheStream;
+
+ function reset() {
+ kx = k * sx;
+ ky = k * sy;
+ cache = cacheStream = null;
+ return projection;
+ }
+
+ function projection (p) {
+ var x = p[0] * kx, y = p[1] * ky;
+ if (alpha) {
+ var t = y * ca - x * sa;
+ x = x * ca + y * sa;
+ y = t;
+ }
+ return [x + tx, y + ty];
+ }
+ projection.invert = function(p) {
+ var x = p[0] - tx, y = p[1] - ty;
+ if (alpha) {
+ var t = y * ca + x * sa;
+ x = x * ca - y * sa;
+ y = t;
+ }
+ return [x / kx, y / ky];
+ };
+ projection.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = transform(postclip(cacheStream = stream));
+ };
+ projection.postclip = function(_) {
+ return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip;
+ };
+ projection.clipExtent = function(_) {
+ return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+ projection.scale = function(_) {
+ return arguments.length ? (k = +_, reset()) : k;
+ };
+ projection.translate = function(_) {
+ return arguments.length ? (tx = +_[0], ty = +_[1], reset()) : [tx, ty];
+ }
+ projection.angle = function(_) {
+ return arguments.length ? (alpha = _ % 360 * radians, sa = sin(alpha), ca = cos(alpha), reset()) : alpha * degrees;
+ };
+ projection.reflectX = function(_) {
+ return arguments.length ? (sx = _ ? -1 : 1, reset()) : sx < 0;
+ };
+ projection.reflectY = function(_) {
+ return arguments.length ? (sy = _ ? -1 : 1, reset()) : sy < 0;
+ };
+ projection.fitExtent = function(extent, object) {
+ return fitExtent(projection, extent, object);
+ };
+ projection.fitSize = function(size, object) {
+ return fitSize(projection, size, object);
+ };
+ projection.fitWidth = function(width, object) {
+ return fitWidth(projection, width, object);
+ };
+ projection.fitHeight = function(height, object) {
+ return fitHeight(projection, height, object);
+ };
+
+ return projection;
+}
diff --git a/node_modules/d3-geo/src/projection/index.js b/node_modules/d3-geo/src/projection/index.js
new file mode 100644
index 00000000..8ea64bc3
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/index.js
@@ -0,0 +1,177 @@
+import clipAntimeridian from "../clip/antimeridian.js";
+import clipCircle from "../clip/circle.js";
+import clipRectangle from "../clip/rectangle.js";
+import compose from "../compose.js";
+import identity from "../identity.js";
+import {cos, degrees, radians, sin, sqrt} from "../math.js";
+import {rotateRadians} from "../rotation.js";
+import {transformer} from "../transform.js";
+import {fitExtent, fitSize, fitWidth, fitHeight} from "./fit.js";
+import resample from "./resample.js";
+
+var transformRadians = transformer({
+ point: function(x, y) {
+ this.stream.point(x * radians, y * radians);
+ }
+});
+
+function transformRotate(rotate) {
+ return transformer({
+ point: function(x, y) {
+ var r = rotate(x, y);
+ return this.stream.point(r[0], r[1]);
+ }
+ });
+}
+
+function scaleTranslate(k, dx, dy, sx, sy) {
+ function transform(x, y) {
+ x *= sx; y *= sy;
+ return [dx + k * x, dy - k * y];
+ }
+ transform.invert = function(x, y) {
+ return [(x - dx) / k * sx, (dy - y) / k * sy];
+ };
+ return transform;
+}
+
+function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) {
+ if (!alpha) return scaleTranslate(k, dx, dy, sx, sy);
+ var cosAlpha = cos(alpha),
+ sinAlpha = sin(alpha),
+ a = cosAlpha * k,
+ b = sinAlpha * k,
+ ai = cosAlpha / k,
+ bi = sinAlpha / k,
+ ci = (sinAlpha * dy - cosAlpha * dx) / k,
+ fi = (sinAlpha * dx + cosAlpha * dy) / k;
+ function transform(x, y) {
+ x *= sx; y *= sy;
+ return [a * x - b * y + dx, dy - b * x - a * y];
+ }
+ transform.invert = function(x, y) {
+ return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)];
+ };
+ return transform;
+}
+
+export default function projection(project) {
+ return projectionMutator(function() { return project; })();
+}
+
+export function projectionMutator(projectAt) {
+ var project,
+ k = 150, // scale
+ x = 480, y = 250, // translate
+ lambda = 0, phi = 0, // center
+ deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate
+ alpha = 0, // post-rotate angle
+ sx = 1, // reflectX
+ sy = 1, // reflectX
+ theta = null, preclip = clipAntimeridian, // pre-clip angle
+ x0 = null, y0, x1, y1, postclip = identity, // post-clip extent
+ delta2 = 0.5, // precision
+ projectResample,
+ projectTransform,
+ projectRotateTransform,
+ cache,
+ cacheStream;
+
+ function projection(point) {
+ return projectRotateTransform(point[0] * radians, point[1] * radians);
+ }
+
+ function invert(point) {
+ point = projectRotateTransform.invert(point[0], point[1]);
+ return point && [point[0] * degrees, point[1] * degrees];
+ }
+
+ projection.stream = function(stream) {
+ return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream)))));
+ };
+
+ projection.preclip = function(_) {
+ return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip;
+ };
+
+ projection.postclip = function(_) {
+ return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip;
+ };
+
+ projection.clipAngle = function(_) {
+ return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees;
+ };
+
+ projection.clipExtent = function(_) {
+ return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+
+ projection.scale = function(_) {
+ return arguments.length ? (k = +_, recenter()) : k;
+ };
+
+ projection.translate = function(_) {
+ return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y];
+ };
+
+ projection.center = function(_) {
+ return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees, phi * degrees];
+ };
+
+ projection.rotate = function(_) {
+ return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees, deltaPhi * degrees, deltaGamma * degrees];
+ };
+
+ projection.angle = function(_) {
+ return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees;
+ };
+
+ projection.reflectX = function(_) {
+ return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0;
+ };
+
+ projection.reflectY = function(_) {
+ return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0;
+ };
+
+ projection.precision = function(_) {
+ return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt(delta2);
+ };
+
+ projection.fitExtent = function(extent, object) {
+ return fitExtent(projection, extent, object);
+ };
+
+ projection.fitSize = function(size, object) {
+ return fitSize(projection, size, object);
+ };
+
+ projection.fitWidth = function(width, object) {
+ return fitWidth(projection, width, object);
+ };
+
+ projection.fitHeight = function(height, object) {
+ return fitHeight(projection, height, object);
+ };
+
+ function recenter() {
+ var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)),
+ transform = scaleTranslateRotate(k, x - center[0], y - center[1], sx, sy, alpha);
+ rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma);
+ projectTransform = compose(project, transform);
+ projectRotateTransform = compose(rotate, projectTransform);
+ projectResample = resample(projectTransform, delta2);
+ return reset();
+ }
+
+ function reset() {
+ cache = cacheStream = null;
+ return projection;
+ }
+
+ return function() {
+ project = projectAt.apply(this, arguments);
+ projection.invert = project.invert && invert;
+ return recenter();
+ };
+}
diff --git a/node_modules/d3-geo/src/projection/mercator.js b/node_modules/d3-geo/src/projection/mercator.js
new file mode 100644
index 00000000..be975a9d
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/mercator.js
@@ -0,0 +1,52 @@
+import {atan, exp, halfPi, log, pi, tan, tau} from "../math.js";
+import rotation from "../rotation.js";
+import projection from "./index.js";
+
+export function mercatorRaw(lambda, phi) {
+ return [lambda, log(tan((halfPi + phi) / 2))];
+}
+
+mercatorRaw.invert = function(x, y) {
+ return [x, 2 * atan(exp(y)) - halfPi];
+};
+
+export default function() {
+ return mercatorProjection(mercatorRaw)
+ .scale(961 / tau);
+}
+
+export function mercatorProjection(project) {
+ var m = projection(project),
+ center = m.center,
+ scale = m.scale,
+ translate = m.translate,
+ clipExtent = m.clipExtent,
+ x0 = null, y0, x1, y1; // clip extent
+
+ m.scale = function(_) {
+ return arguments.length ? (scale(_), reclip()) : scale();
+ };
+
+ m.translate = function(_) {
+ return arguments.length ? (translate(_), reclip()) : translate();
+ };
+
+ m.center = function(_) {
+ return arguments.length ? (center(_), reclip()) : center();
+ };
+
+ m.clipExtent = function(_) {
+ return arguments.length ? ((_ == null ? x0 = y0 = x1 = y1 = null : (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1])), reclip()) : x0 == null ? null : [[x0, y0], [x1, y1]];
+ };
+
+ function reclip() {
+ var k = pi * scale(),
+ t = m(rotation(m.rotate()).invert([0, 0]));
+ return clipExtent(x0 == null
+ ? [[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]] : project === mercatorRaw
+ ? [[Math.max(t[0] - k, x0), y0], [Math.min(t[0] + k, x1), y1]]
+ : [[x0, Math.max(t[1] - k, y0)], [x1, Math.min(t[1] + k, y1)]]);
+ }
+
+ return reclip();
+}
diff --git a/node_modules/d3-geo/src/projection/naturalEarth1.js b/node_modules/d3-geo/src/projection/naturalEarth1.js
new file mode 100644
index 00000000..fe5ed310
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/naturalEarth1.js
@@ -0,0 +1,28 @@
+import projection from "./index.js";
+import {abs, epsilon} from "../math.js";
+
+export function naturalEarth1Raw(lambda, phi) {
+ var phi2 = phi * phi, phi4 = phi2 * phi2;
+ return [
+ lambda * (0.8707 - 0.131979 * phi2 + phi4 * (-0.013791 + phi4 * (0.003971 * phi2 - 0.001529 * phi4))),
+ phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4)))
+ ];
+}
+
+naturalEarth1Raw.invert = function(x, y) {
+ var phi = y, i = 25, delta;
+ do {
+ var phi2 = phi * phi, phi4 = phi2 * phi2;
+ phi -= delta = (phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4))) - y) /
+ (1.007226 + phi2 * (0.015085 * 3 + phi4 * (-0.044475 * 7 + 0.028874 * 9 * phi2 - 0.005916 * 11 * phi4)));
+ } while (abs(delta) > epsilon && --i > 0);
+ return [
+ x / (0.8707 + (phi2 = phi * phi) * (-0.131979 + phi2 * (-0.013791 + phi2 * phi2 * phi2 * (0.003971 - 0.001529 * phi2)))),
+ phi
+ ];
+};
+
+export default function() {
+ return projection(naturalEarth1Raw)
+ .scale(175.295);
+}
diff --git a/node_modules/d3-geo/src/projection/orthographic.js b/node_modules/d3-geo/src/projection/orthographic.js
new file mode 100644
index 00000000..b5a8351f
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/orthographic.js
@@ -0,0 +1,15 @@
+import {asin, cos, epsilon, sin} from "../math.js";
+import {azimuthalInvert} from "./azimuthal.js";
+import projection from "./index.js";
+
+export function orthographicRaw(x, y) {
+ return [cos(y) * sin(x), sin(y)];
+}
+
+orthographicRaw.invert = azimuthalInvert(asin);
+
+export default function() {
+ return projection(orthographicRaw)
+ .scale(249.5)
+ .clipAngle(90 + epsilon);
+}
diff --git a/node_modules/d3-geo/src/projection/resample.js b/node_modules/d3-geo/src/projection/resample.js
new file mode 100644
index 00000000..268fc442
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/resample.js
@@ -0,0 +1,102 @@
+import {cartesian} from "../cartesian.js";
+import {abs, asin, atan2, cos, epsilon, radians, sqrt} from "../math.js";
+import {transformer} from "../transform.js";
+
+var maxDepth = 16, // maximum depth of subdivision
+ cosMinDistance = cos(30 * radians); // cos(minimum angular distance)
+
+export default function(project, delta2) {
+ return +delta2 ? resample(project, delta2) : resampleNone(project);
+}
+
+function resampleNone(project) {
+ return transformer({
+ point: function(x, y) {
+ x = project(x, y);
+ this.stream.point(x[0], x[1]);
+ }
+ });
+}
+
+function resample(project, delta2) {
+
+ function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) {
+ var dx = x1 - x0,
+ dy = y1 - y0,
+ d2 = dx * dx + dy * dy;
+ if (d2 > 4 * delta2 && depth--) {
+ var a = a0 + a1,
+ b = b0 + b1,
+ c = c0 + c1,
+ m = sqrt(a * a + b * b + c * c),
+ phi2 = asin(c /= m),
+ lambda2 = abs(abs(c) - 1) < epsilon || abs(lambda0 - lambda1) < epsilon ? (lambda0 + lambda1) / 2 : atan2(b, a),
+ p = project(lambda2, phi2),
+ x2 = p[0],
+ y2 = p[1],
+ dx2 = x2 - x0,
+ dy2 = y2 - y0,
+ dz = dy * dx2 - dx * dy2;
+ if (dz * dz / d2 > delta2 // perpendicular projected distance
+ || abs((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end
+ || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream);
+ stream.point(x2, y2);
+ resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream);
+ }
+ }
+ }
+ return function(stream) {
+ var lambda00, x00, y00, a00, b00, c00, // first point
+ lambda0, x0, y0, a0, b0, c0; // previous point
+
+ var resampleStream = {
+ point: point,
+ lineStart: lineStart,
+ lineEnd: lineEnd,
+ polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; },
+ polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; }
+ };
+
+ function point(x, y) {
+ x = project(x, y);
+ stream.point(x[0], x[1]);
+ }
+
+ function lineStart() {
+ x0 = NaN;
+ resampleStream.point = linePoint;
+ stream.lineStart();
+ }
+
+ function linePoint(lambda, phi) {
+ var c = cartesian([lambda, phi]), p = project(lambda, phi);
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
+ stream.point(x0, y0);
+ }
+
+ function lineEnd() {
+ resampleStream.point = point;
+ stream.lineEnd();
+ }
+
+ function ringStart() {
+ lineStart();
+ resampleStream.point = ringPoint;
+ resampleStream.lineEnd = ringEnd;
+ }
+
+ function ringPoint(lambda, phi) {
+ linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
+ resampleStream.point = linePoint;
+ }
+
+ function ringEnd() {
+ resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream);
+ resampleStream.lineEnd = lineEnd;
+ lineEnd();
+ }
+
+ return resampleStream;
+ };
+}
diff --git a/node_modules/d3-geo/src/projection/stereographic.js b/node_modules/d3-geo/src/projection/stereographic.js
new file mode 100644
index 00000000..5f9694aa
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/stereographic.js
@@ -0,0 +1,18 @@
+import {atan, cos, sin} from "../math.js";
+import {azimuthalInvert} from "./azimuthal.js";
+import projection from "./index.js";
+
+export function stereographicRaw(x, y) {
+ var cy = cos(y), k = 1 + cos(x) * cy;
+ return [cy * sin(x) / k, sin(y) / k];
+}
+
+stereographicRaw.invert = azimuthalInvert(function(z) {
+ return 2 * atan(z);
+});
+
+export default function() {
+ return projection(stereographicRaw)
+ .scale(250)
+ .clipAngle(142);
+}
diff --git a/node_modules/d3-geo/src/projection/transverseMercator.js b/node_modules/d3-geo/src/projection/transverseMercator.js
new file mode 100644
index 00000000..bedd1c36
--- /dev/null
+++ b/node_modules/d3-geo/src/projection/transverseMercator.js
@@ -0,0 +1,27 @@
+import {atan, exp, halfPi, log, tan} from "../math.js";
+import {mercatorProjection} from "./mercator.js";
+
+export function transverseMercatorRaw(lambda, phi) {
+ return [log(tan((halfPi + phi) / 2)), -lambda];
+}
+
+transverseMercatorRaw.invert = function(x, y) {
+ return [-y, 2 * atan(exp(x)) - halfPi];
+};
+
+export default function() {
+ var m = mercatorProjection(transverseMercatorRaw),
+ center = m.center,
+ rotate = m.rotate;
+
+ m.center = function(_) {
+ return arguments.length ? center([-_[1], _[0]]) : (_ = center(), [_[1], -_[0]]);
+ };
+
+ m.rotate = function(_) {
+ return arguments.length ? rotate([_[0], _[1], _.length > 2 ? _[2] + 90 : 90]) : (_ = rotate(), [_[0], _[1], _[2] - 90]);
+ };
+
+ return rotate([0, 0, 90])
+ .scale(159.155);
+}
diff --git a/node_modules/d3-geo/src/rotation.js b/node_modules/d3-geo/src/rotation.js
new file mode 100644
index 00000000..4e2def36
--- /dev/null
+++ b/node_modules/d3-geo/src/rotation.js
@@ -0,0 +1,76 @@
+import compose from "./compose.js";
+import {abs, asin, atan2, cos, degrees, pi, radians, sin, tau} from "./math.js";
+
+function rotationIdentity(lambda, phi) {
+ return [abs(lambda) > pi ? lambda + Math.round(-lambda / tau) * tau : lambda, phi];
+}
+
+rotationIdentity.invert = rotationIdentity;
+
+export function rotateRadians(deltaLambda, deltaPhi, deltaGamma) {
+ return (deltaLambda %= tau) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma))
+ : rotationLambda(deltaLambda))
+ : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma)
+ : rotationIdentity);
+}
+
+function forwardRotationLambda(deltaLambda) {
+ return function(lambda, phi) {
+ return lambda += deltaLambda, [lambda > pi ? lambda - tau : lambda < -pi ? lambda + tau : lambda, phi];
+ };
+}
+
+function rotationLambda(deltaLambda) {
+ var rotation = forwardRotationLambda(deltaLambda);
+ rotation.invert = forwardRotationLambda(-deltaLambda);
+ return rotation;
+}
+
+function rotationPhiGamma(deltaPhi, deltaGamma) {
+ var cosDeltaPhi = cos(deltaPhi),
+ sinDeltaPhi = sin(deltaPhi),
+ cosDeltaGamma = cos(deltaGamma),
+ sinDeltaGamma = sin(deltaGamma);
+
+ function rotation(lambda, phi) {
+ var cosPhi = cos(phi),
+ x = cos(lambda) * cosPhi,
+ y = sin(lambda) * cosPhi,
+ z = sin(phi),
+ k = z * cosDeltaPhi + x * sinDeltaPhi;
+ return [
+ atan2(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi),
+ asin(k * cosDeltaGamma + y * sinDeltaGamma)
+ ];
+ }
+
+ rotation.invert = function(lambda, phi) {
+ var cosPhi = cos(phi),
+ x = cos(lambda) * cosPhi,
+ y = sin(lambda) * cosPhi,
+ z = sin(phi),
+ k = z * cosDeltaGamma - y * sinDeltaGamma;
+ return [
+ atan2(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi),
+ asin(k * cosDeltaPhi - x * sinDeltaPhi)
+ ];
+ };
+
+ return rotation;
+}
+
+export default function(rotate) {
+ rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0);
+
+ function forward(coordinates) {
+ coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians);
+ return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+ }
+
+ forward.invert = function(coordinates) {
+ coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians);
+ return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates;
+ };
+
+ return forward;
+}
diff --git a/node_modules/d3-geo/src/stream.js b/node_modules/d3-geo/src/stream.js
new file mode 100644
index 00000000..ee994ae4
--- /dev/null
+++ b/node_modules/d3-geo/src/stream.js
@@ -0,0 +1,69 @@
+function streamGeometry(geometry, stream) {
+ if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) {
+ streamGeometryType[geometry.type](geometry, stream);
+ }
+}
+
+var streamObjectType = {
+ Feature: function(object, stream) {
+ streamGeometry(object.geometry, stream);
+ },
+ FeatureCollection: function(object, stream) {
+ var features = object.features, i = -1, n = features.length;
+ while (++i < n) streamGeometry(features[i].geometry, stream);
+ }
+};
+
+var streamGeometryType = {
+ Sphere: function(object, stream) {
+ stream.sphere();
+ },
+ Point: function(object, stream) {
+ object = object.coordinates;
+ stream.point(object[0], object[1], object[2]);
+ },
+ MultiPoint: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]);
+ },
+ LineString: function(object, stream) {
+ streamLine(object.coordinates, stream, 0);
+ },
+ MultiLineString: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) streamLine(coordinates[i], stream, 0);
+ },
+ Polygon: function(object, stream) {
+ streamPolygon(object.coordinates, stream);
+ },
+ MultiPolygon: function(object, stream) {
+ var coordinates = object.coordinates, i = -1, n = coordinates.length;
+ while (++i < n) streamPolygon(coordinates[i], stream);
+ },
+ GeometryCollection: function(object, stream) {
+ var geometries = object.geometries, i = -1, n = geometries.length;
+ while (++i < n) streamGeometry(geometries[i], stream);
+ }
+};
+
+function streamLine(coordinates, stream, closed) {
+ var i = -1, n = coordinates.length - closed, coordinate;
+ stream.lineStart();
+ while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]);
+ stream.lineEnd();
+}
+
+function streamPolygon(coordinates, stream) {
+ var i = -1, n = coordinates.length;
+ stream.polygonStart();
+ while (++i < n) streamLine(coordinates[i], stream, 1);
+ stream.polygonEnd();
+}
+
+export default function(object, stream) {
+ if (object && streamObjectType.hasOwnProperty(object.type)) {
+ streamObjectType[object.type](object, stream);
+ } else {
+ streamGeometry(object, stream);
+ }
+}
diff --git a/node_modules/d3-geo/src/transform.js b/node_modules/d3-geo/src/transform.js
new file mode 100644
index 00000000..a954bc5a
--- /dev/null
+++ b/node_modules/d3-geo/src/transform.js
@@ -0,0 +1,26 @@
+export default function(methods) {
+ return {
+ stream: transformer(methods)
+ };
+}
+
+export function transformer(methods) {
+ return function(stream) {
+ var s = new TransformStream;
+ for (var key in methods) s[key] = methods[key];
+ s.stream = stream;
+ return s;
+ };
+}
+
+function TransformStream() {}
+
+TransformStream.prototype = {
+ constructor: TransformStream,
+ point: function(x, y) { this.stream.point(x, y); },
+ sphere: function() { this.stream.sphere(); },
+ lineStart: function() { this.stream.lineStart(); },
+ lineEnd: function() { this.stream.lineEnd(); },
+ polygonStart: function() { this.stream.polygonStart(); },
+ polygonEnd: function() { this.stream.polygonEnd(); }
+};
diff --git a/node_modules/d3-hierarchy/LICENSE b/node_modules/d3-hierarchy/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-hierarchy/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-hierarchy/README.md b/node_modules/d3-hierarchy/README.md
new file mode 100644
index 00000000..69e4f7e8
--- /dev/null
+++ b/node_modules/d3-hierarchy/README.md
@@ -0,0 +1,592 @@
+# d3-hierarchy
+
+Many datasets are intrinsically hierarchical. Consider [geographic entities](https://www.census.gov/programs-surveys/geography/guidance/hierarchy.html), such as census blocks, census tracts, counties and states; the command structure of businesses and governments; file systems and software packages. And even non-hierarchical data may be arranged empirically into a hierarchy, as with [*k*-means clustering](https://en.wikipedia.org/wiki/K-means_clustering) or [phylogenetic trees](https://observablehq.com/@mbostock/tree-of-life).
+
+This module implements several popular techniques for visualizing hierarchical data:
+
+**Node-link diagrams** show topology using discrete marks for nodes and links, such as a circle for each node and a line connecting each parent and child. The [“tidy” tree](#tree) is delightfully compact, while the [dendrogram](#cluster) places leaves at the same level. (These have both polar and Cartesian forms.) [Indented trees](https://observablehq.com/@d3/indented-tree) are useful for interactive browsing.
+
+**Adjacency diagrams** show topology through the relative placement of nodes. They may also encode a quantitative dimension in the area of each node, for example to show revenue or file size. The [“icicle” diagram](#partition) uses rectangles, while the “sunburst” uses annular segments.
+
+**Enclosure diagrams** also use an area encoding, but show topology through containment. A [treemap](#treemap) recursively subdivides area into rectangles. [Circle-packing](#pack) tightly nests circles; this is not as space-efficient as a treemap, but perhaps more readily shows topology.
+
+A good hierarchical visualization facilitates rapid multiscale inference: micro-observations of individual elements and macro-observations of large groups.
+
+## Installing
+
+If you use npm, `npm install d3-hierarchy`. You can also download the [latest release on GitHub](https://github.com/d3/d3-hierarchy/releases/latest). For vanilla HTML in modern browsers, import d3-hierarchy from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-hierarchy’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+* [Hierarchy](#hierarchy) ([Stratify](#stratify))
+* [Cluster](#cluster)
+* [Tree](#tree)
+* [Treemap](#treemap) ([Treemap Tiling](#treemap-tiling))
+* [Partition](#partition)
+* [Pack](#pack)
+
+### Hierarchy
+
+Before you can compute a hierarchical layout, you need a root node. If your data is already in a hierarchical format, such as JSON, you can pass it directly to [d3.hierarchy](#hierarchy); otherwise, you can rearrange tabular data, such as comma-separated values (CSV), into a hierarchy using [d3.stratify](#stratify).
+
+# d3.hierarchy (data [, children ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/index.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Constructs a root node from the specified hierarchical *data*. The specified *data* must be an object representing the root node. For example:
+
+```json
+{
+ "name": "Eve",
+ "children": [
+ {
+ "name": "Cain"
+ },
+ {
+ "name": "Seth",
+ "children": [
+ {
+ "name": "Enos"
+ },
+ {
+ "name": "Noam"
+ }
+ ]
+ },
+ {
+ "name": "Abel"
+ },
+ {
+ "name": "Awan",
+ "children": [
+ {
+ "name": "Enoch"
+ }
+ ]
+ },
+ {
+ "name": "Azura"
+ }
+ ]
+}
+```
+
+The specified *children* accessor function is invoked for each datum, starting with the root *data*, and must return an iterable of data representing the children, if any. If the children accessor is not specified, it defaults to:
+
+```js
+function children(d) {
+ return d.children;
+}
+```
+
+If *data* is a Map, it is implicitly converted to the entry [undefined, *data*], and the children accessor instead defaults to:
+
+```js
+function children(d) {
+ return Array.isArray(d) ? d[1] : null;
+}
+```
+
+This allows you to pass the result of [d3.group](https://github.com/d3/d3-array/blob/main/README.md#group) or [d3.rollup](https://github.com/d3/d3-array/blob/main/README.md#rollup) to d3.hierarchy.
+
+The returned node and each descendant has the following properties:
+
+* *node*.data - the associated data, as specified to the [constructor](#hierarchy).
+* *node*.depth - zero for the root node, and increasing by one for each descendant generation.
+* *node*.height - zero for leaf nodes, and the greatest distance from any descendant leaf for internal nodes.
+* *node*.parent - the parent node, or null for the root node.
+* *node*.children - an array of child nodes, if any; undefined for leaf nodes.
+* *node*.value - the summed value of the node and its [descendants](#node_descendants); optional, see [*node*.sum](#node_sum) and [*node*.count](#node_count).
+
+This method can also be used to test if a node is an `instanceof d3.hierarchy` and to extend the node prototype.
+
+# node .ancestors () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/ancestors.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Returns the array of ancestors nodes, starting with this node, then followed by each parent up to the root.
+
+# node .descendants () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/descendants.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Returns the array of descendant nodes, starting with this node, then followed by each child in topological order.
+
+# node .leaves () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/leaves.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Returns the array of leaf nodes in traversal order; leaves are nodes with no children.
+
+# node .find (filter ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/find.js)
+
+Returns the first node in the hierarchy from this *node* for which the specified *filter* returns a truthy value. undefined if no such node is found.
+
+# node .path (target ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/path.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Returns the shortest path through the hierarchy from this *node* to the specified *target* node. The path starts at this *node*, ascends to the least common ancestor of this *node* and the *target* node, and then descends to the *target* node. This is particularly useful for [hierarchical edge bundling](https://observablehq.com/@d3/hierarchical-edge-bundling).
+
+# node .links () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/links.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Returns an array of links for this *node* and its descendants, where each *link* is an object that defines source and target properties. The source of each link is the parent node, and the target is a child node.
+
+# node .sum (value ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/sum.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Evaluates the specified *value* function for this *node* and each descendant in [post-order traversal](#node_eachAfter), and returns this *node*. The *node*.value property of each node is set to the numeric value returned by the specified function plus the combined value of all children. The function is passed the node’s data, and must return a non-negative number. The *value* accessor is evaluated for *node* and every descendant, including internal nodes; if you only want leaf nodes to have internal value, then return zero for any node with children. [For example](https://observablehq.com/@d3/treemap-by-count), as an alternative to [*node*.count](#node_count):
+
+```js
+root.sum(function(d) { return d.value ? 1 : 0; });
+```
+
+You must call *node*.sum or [*node*.count](#node_count) before invoking a hierarchical layout that requires *node*.value, such as [d3.treemap](#treemap). Since the API supports [method chaining](https://en.wikipedia.org/wiki/Method_chaining), you can invoke *node*.sum and [*node*.sort](#node_sort) before computing the layout, and then subsequently generate an array of all [descendant nodes](#node_descendants) like so:
+
+```js
+var treemap = d3.treemap()
+ .size([width, height])
+ .padding(2);
+
+var nodes = treemap(root
+ .sum(function(d) { return d.value; })
+ .sort(function(a, b) { return b.height - a.height || b.value - a.value; }))
+ .descendants();
+```
+
+This example assumes that the node data has a value field.
+
+# node .count () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/count.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Computes the number of leaves under this *node* and assigns it to *node*.value, and similarly for every descendant of *node*. If this *node* is a leaf, its count is one. Returns this *node*. See also [*node*.sum](#node_sum).
+
+# node .sort (compare ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/sort.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Sorts the children of this *node*, if any, and each of this *node*’s descendants’ children, in [pre-order traversal](#node_eachBefore) using the specified *compare* function, and returns this *node*. The specified function is passed two nodes *a* and *b* to compare. If *a* should be before *b*, the function must return a value less than zero; if *b* should be before *a*, the function must return a value greater than zero; otherwise, the relative order of *a* and *b* are not specified. See [*array*.sort](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort) for more.
+
+Unlike [*node*.sum](#node_sum), the *compare* function is passed two [nodes](#hierarchy) rather than two nodes’ data. For example, if the data has a value property, this sorts nodes by the descending aggregate value of the node and all its descendants, as is recommended for [circle-packing](#pack):
+
+```js
+root
+ .sum(function(d) { return d.value; })
+ .sort(function(a, b) { return b.value - a.value; });
+``````
+
+Similarly, to sort nodes by descending height (greatest distance from any descendant leaf) and then descending value, as is recommended for [treemaps](#treemap) and [icicles](#partition):
+
+```js
+root
+ .sum(function(d) { return d.value; })
+ .sort(function(a, b) { return b.height - a.height || b.value - a.value; });
+```
+
+To sort nodes by descending height and then ascending id, as is recommended for [trees](#tree) and [dendrograms](#cluster):
+
+```js
+root
+ .sum(function(d) { return d.value; })
+ .sort(function(a, b) { return b.height - a.height || a.id.localeCompare(b.id); });
+```
+
+You must call *node*.sort before invoking a hierarchical layout if you want the new sort order to affect the layout; see [*node*.sum](#node_sum) for an example.
+
+# node \[Symbol.iterator \]() [<>](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/iterator.js "Source")
+
+Returns an iterator over the *node*’s descendants in breadth-first order. For example:
+
+```js
+for (const descendant of node) {
+ console.log(descendant);
+}
+```
+
+# node .each (function [, that ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/each.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Invokes the specified *function* for *node* and each descendant in [breadth-first order](https://en.wikipedia.org/wiki/Breadth-first_search), such that a given *node* is only visited if all nodes of lesser depth have already been visited, as well as all preceding nodes of the same depth. The specified function is passed the current *descendant*, the zero-based traversal *index*, and this *node*. If *that* is specified, it is the this context of the callback.
+
+# node .eachAfter (function [, that ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/eachAfter.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Invokes the specified *function* for *node* and each descendant in [post-order traversal](https://en.wikipedia.org/wiki/Tree_traversal#Post-order), such that a given *node* is only visited after all of its descendants have already been visited. The specified function is passed the current *descendant*, the zero-based traversal *index*, and this *node*. If *that* is specified, it is the this context of the callback.
+
+# node .eachBefore (function [, that ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/eachBefore.js), [Examples](https://observablehq.com/@d3/visiting-a-d3-hierarchy)
+
+Invokes the specified *function* for *node* and each descendant in [pre-order traversal](https://en.wikipedia.org/wiki/Tree_traversal#Pre-order), such that a given *node* is only visited after all of its ancestors have already been visited. The specified function is passed the current *descendant*, the zero-based traversal *index*, and this *node*. If *that* is specified, it is the this context of the callback.
+
+# node .copy () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/hierarchy/index.js), [Examples](https://observablehq.com/@d3/d3-hierarchy)
+
+Return a deep copy of the subtree starting at this *node*. (The returned deep copy shares the same data, however.) The returned node is the root of a new tree; the returned node’s parent is always null and its depth is always zero.
+
+#### Stratify
+
+Consider the following table of relationships:
+
+Name | Parent
+------|--------
+Eve |
+Cain | Eve
+Seth | Eve
+Enos | Seth
+Noam | Seth
+Abel | Eve
+Awan | Eve
+Enoch | Awan
+Azura | Eve
+
+These names are conveniently unique, so we can unambiguously represent the hierarchy as a CSV file:
+
+```
+name,parent
+Eve,
+Cain,Eve
+Seth,Eve
+Enos,Seth
+Noam,Seth
+Abel,Eve
+Awan,Eve
+Enoch,Awan
+Azura,Eve
+```
+
+To parse the CSV using [d3.csvParse](https://github.com/d3/d3-dsv#csvParse):
+
+```js
+var table = d3.csvParse(text);
+```
+
+This returns:
+
+```json
+[
+ {"name": "Eve", "parent": ""},
+ {"name": "Cain", "parent": "Eve"},
+ {"name": "Seth", "parent": "Eve"},
+ {"name": "Enos", "parent": "Seth"},
+ {"name": "Noam", "parent": "Seth"},
+ {"name": "Abel", "parent": "Eve"},
+ {"name": "Awan", "parent": "Eve"},
+ {"name": "Enoch", "parent": "Awan"},
+ {"name": "Azura", "parent": "Eve"}
+]
+```
+
+To convert to a hierarchy:
+
+```js
+var root = d3.stratify()
+ .id(function(d) { return d.name; })
+ .parentId(function(d) { return d.parent; })
+ (table);
+```
+
+This returns:
+
+[# d3.stratify () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/stratify.js), [Examples](https://observablehq.com/@d3/d3-stratify)
+
+Constructs a new stratify operator with the default settings.
+
+# stratify (data ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/stratify.js), [Examples](https://observablehq.com/@d3/d3-stratify)
+
+Generates a new hierarchy from the specified tabular *data*.
+
+# stratify .id ([id ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/stratify.js), [Examples](https://observablehq.com/@d3/d3-stratify)
+
+If *id* is specified, sets the id accessor to the given function and returns this stratify operator. Otherwise, returns the current id accessor, which defaults to:
+
+```js
+function id(d) {
+ return d.id;
+}
+```
+
+The id accessor is invoked for each element in the input data passed to the [stratify operator](#_stratify), being passed the current datum (*d*) and the current index (*i*). The returned string is then used to identify the node’s relationships in conjunction with the [parent id](#stratify_parentId). For leaf nodes, the id may be undefined; otherwise, the id must be unique. (Null and the empty string are equivalent to undefined.)
+
+# stratify .parentId ([parentId ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/stratify.js), [Examples](https://observablehq.com/@d3/d3-stratify)
+
+If *parentId* is specified, sets the parent id accessor to the given function and returns this stratify operator. Otherwise, returns the current parent id accessor, which defaults to:
+
+```js
+function parentId(d) {
+ return d.parentId;
+}
+```
+
+The parent id accessor is invoked for each element in the input data passed to the [stratify operator](#_stratify), being passed the current datum (*d*) and the current index (*i*). The returned string is then used to identify the node’s relationships in conjunction with the [id](#stratify_id). For the root node, the parent id should be undefined. (Null and the empty string are equivalent to undefined.) There must be exactly one root node in the input data, and no circular relationships.
+
+# stratify .path ([path ]) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/stratify.js), [Examples](https://observablehq.com/@d3/d3-stratify)
+
+If *path* is specified, sets the path accessor to the given function and returns this stratify operator. Otherwise, returns the current path accessor, which defaults to undefined. If a path accessor is set, the id and parentId arguments are ignored, and a unix-like hierarchy is computed on the slash-delimited strings returned by the path accessor, imputing parent nodes and ids as necessary.
+
+```js
+d3.stratify().path(d => d)(["a/b", "a/c"]); // nodes with id "/a", "/a/b", "/a/c"
+```
+
+### Cluster
+
+[# d3.cluster () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/cluster.js), [Examples](https://observablehq.com/@d3/cluster-dendrogram)
+
+Creates a new cluster layout with default settings.
+
+# cluster (root )
+
+Lays out the specified *root* [hierarchy](#hierarchy), assigning the following properties on *root* and its descendants:
+
+* *node*.x - the *x*-coordinate of the node
+* *node*.y - the *y*-coordinate of the node
+
+The coordinates *x* and *y* represent an arbitrary coordinate system; for example, you can treat *x* as an angle and *y* as a radius to produce a [radial layout](https://observablehq.com/@d3/radial-dendrogram). You may want to call [*root*.sort](#node_sort) before passing the hierarchy to the cluster layout.
+
+# cluster .size ([size ])
+
+If *size* is specified, sets this cluster layout’s size to the specified two-element array of numbers [*width*, *height*] and returns this cluster layout. If *size* is not specified, returns the current layout size, which defaults to [1, 1]. A layout size of null indicates that a [node size](#cluster_nodeSize) will be used instead. The coordinates *x* and *y* represent an arbitrary coordinate system; for example, to produce a [radial layout](https://observablehq.com/@d3/radial-dendrogram), a size of [360, *radius*] corresponds to a breadth of 360° and a depth of *radius*.
+
+# cluster .nodeSize ([size ])
+
+If *size* is specified, sets this cluster layout’s node size to the specified two-element array of numbers [*width*, *height*] and returns this cluster layout. If *size* is not specified, returns the current node size, which defaults to null. A node size of null indicates that a [layout size](#cluster_size) will be used instead. When a node size is specified, the root node is always positioned at ⟨0, 0⟩.
+
+# cluster .separation ([separation ])
+
+If *separation* is specified, sets the separation accessor to the specified function and returns this cluster layout. If *separation* is not specified, returns the current separation accessor, which defaults to:
+
+```js
+function separation(a, b) {
+ return a.parent == b.parent ? 1 : 2;
+}
+```
+
+The separation accessor is used to separate neighboring leaves. The separation function is passed two leaves *a* and *b*, and must return the desired separation. The nodes are typically siblings, though the nodes may be more distantly related if the layout decides to place such nodes adjacent.
+
+### Tree
+
+[# d3.tree () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/tree.js), [Examples](https://observablehq.com/@d3/tidy-tree)
+
+Creates a new tree layout with default settings.
+
+# tree (root )
+
+Lays out the specified *root* [hierarchy](#hierarchy), assigning the following properties on *root* and its descendants:
+
+* *node*.x - the *x*-coordinate of the node
+* *node*.y - the *y*-coordinate of the node
+
+The coordinates *x* and *y* represent an arbitrary coordinate system; for example, you can treat *x* as an angle and *y* as a radius to produce a [radial layout](https://observablehq.com/@d3/radial-tidy-tree). You may want to call [*root*.sort](#node_sort) before passing the hierarchy to the tree layout.
+
+# tree .size ([size ])
+
+If *size* is specified, sets this tree layout’s size to the specified two-element array of numbers [*width*, *height*] and returns this tree layout. If *size* is not specified, returns the current layout size, which defaults to [1, 1]. A layout size of null indicates that a [node size](#tree_nodeSize) will be used instead. The coordinates *x* and *y* represent an arbitrary coordinate system; for example, to produce a [radial layout](https://observablehq.com/@d3/radial-tidy-tree), a size of [360, *radius*] corresponds to a breadth of 360° and a depth of *radius*.
+
+# tree .nodeSize ([size ])
+
+If *size* is specified, sets this tree layout’s node size to the specified two-element array of numbers [*width*, *height*] and returns this tree layout. If *size* is not specified, returns the current node size, which defaults to null. A node size of null indicates that a [layout size](#tree_size) will be used instead. When a node size is specified, the root node is always positioned at ⟨0, 0⟩.
+
+# tree .separation ([separation ])
+
+If *separation* is specified, sets the separation accessor to the specified function and returns this tree layout. If *separation* is not specified, returns the current separation accessor, which defaults to:
+
+```js
+function separation(a, b) {
+ return a.parent == b.parent ? 1 : 2;
+}
+```
+
+A variation that is more appropriate for radial layouts reduces the separation gap proportionally to the radius:
+
+```js
+function separation(a, b) {
+ return (a.parent == b.parent ? 1 : 2) / a.depth;
+}
+```
+
+The separation accessor is used to separate neighboring nodes. The separation function is passed two nodes *a* and *b*, and must return the desired separation. The nodes are typically siblings, though the nodes may be more distantly related if the layout decides to place such nodes adjacent.
+
+### Treemap
+
+[# d3.treemap () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/index.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Creates a new treemap layout with default settings.
+
+# treemap (root )
+
+Lays out the specified *root* [hierarchy](#hierarchy), assigning the following properties on *root* and its descendants:
+
+* *node*.x0 - the left edge of the rectangle
+* *node*.y0 - the top edge of the rectangle
+* *node*.x1 - the right edge of the rectangle
+* *node*.y1 - the bottom edge of the rectangle
+
+You must call [*root*.sum](#node_sum) before passing the hierarchy to the treemap layout. You probably also want to call [*root*.sort](#node_sort) to order the hierarchy before computing the layout.
+
+# treemap .tile ([tile ])
+
+If *tile* is specified, sets the [tiling method](#treemap-tiling) to the specified function and returns this treemap layout. If *tile* is not specified, returns the current tiling method, which defaults to [d3.treemapSquarify](#treemapSquarify) with the golden ratio.
+
+# treemap .size ([size ])
+
+If *size* is specified, sets this treemap layout’s size to the specified two-element array of numbers [*width*, *height*] and returns this treemap layout. If *size* is not specified, returns the current size, which defaults to [1, 1].
+
+# treemap .round ([round ])
+
+If *round* is specified, enables or disables rounding according to the given boolean and returns this treemap layout. If *round* is not specified, returns the current rounding state, which defaults to false.
+
+# treemap .padding ([padding ])
+
+If *padding* is specified, sets the [inner](#treemap_paddingInner) and [outer](#treemap_paddingOuter) padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current inner padding function.
+
+# treemap .paddingInner ([padding ])
+
+If *padding* is specified, sets the inner padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current inner padding function, which defaults to the constant zero. If *padding* is a function, it is invoked for each node with children, being passed the current node. The inner padding is used to separate a node’s adjacent children.
+
+# treemap .paddingOuter ([padding ])
+
+If *padding* is specified, sets the [top](#treemap_paddingTop), [right](#treemap_paddingRight), [bottom](#treemap_paddingBottom) and [left](#treemap_paddingLeft) padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current top padding function.
+
+# treemap .paddingTop ([padding ])
+
+If *padding* is specified, sets the top padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current top padding function, which defaults to the constant zero. If *padding* is a function, it is invoked for each node with children, being passed the current node. The top padding is used to separate the top edge of a node from its children.
+
+# treemap .paddingRight ([padding ])
+
+If *padding* is specified, sets the right padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current right padding function, which defaults to the constant zero. If *padding* is a function, it is invoked for each node with children, being passed the current node. The right padding is used to separate the right edge of a node from its children.
+
+# treemap .paddingBottom ([padding ])
+
+If *padding* is specified, sets the bottom padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current bottom padding function, which defaults to the constant zero. If *padding* is a function, it is invoked for each node with children, being passed the current node. The bottom padding is used to separate the bottom edge of a node from its children.
+
+# treemap .paddingLeft ([padding ])
+
+If *padding* is specified, sets the left padding to the specified number or function and returns this treemap layout. If *padding* is not specified, returns the current left padding function, which defaults to the constant zero. If *padding* is a function, it is invoked for each node with children, being passed the current node. The left padding is used to separate the left edge of a node from its children.
+
+#### Treemap Tiling
+
+Several built-in tiling methods are provided for use with [*treemap*.tile](#treemap_tile).
+
+# d3.treemapBinary (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/binary.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Recursively partitions the specified *nodes* into an approximately-balanced binary tree, choosing horizontal partitioning for wide rectangles and vertical partitioning for tall rectangles.
+
+# d3.treemapDice (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/dice.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Divides the rectangular area specified by *x0*, *y0*, *x1*, *y1* horizontally according the value of each of the specified *node*’s children. The children are positioned in order, starting with the left edge (*x0*) of the given rectangle. If the sum of the children’s values is less than the specified *node*’s value (*i.e.*, if the specified *node* has a non-zero internal value), the remaining empty space will be positioned on the right edge (*x1*) of the given rectangle.
+
+# d3.treemapSlice (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/slice.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Divides the rectangular area specified by *x0*, *y0*, *x1*, *y1* vertically according the value of each of the specified *node*’s children. The children are positioned in order, starting with the top edge (*y0*) of the given rectangle. If the sum of the children’s values is less than the specified *node*’s value (*i.e.*, if the specified *node* has a non-zero internal value), the remaining empty space will be positioned on the bottom edge (*y1*) of the given rectangle.
+
+# d3.treemapSliceDice (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/sliceDice.js), [Examples](https://observablehq.com/@d3/treemap)
+
+If the specified *node* has odd depth, delegates to [treemapSlice](#treemapSlice); otherwise delegates to [treemapDice](#treemapDice).
+
+# d3.treemapSquarify (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/squarify.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Implements the [squarified treemap](https://www.win.tue.nl/~vanwijk/stm.pdf) algorithm by Bruls *et al.*, which seeks to produce rectangles of a given [aspect ratio](#squarify_ratio).
+
+# d3.treemapResquarify (node , x0 , y0 , x1 , y1 ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/resquarify.js), [Examples](https://observablehq.com/@d3/animated-treemap)
+
+Like [d3.treemapSquarify](#treemapSquarify), except preserves the topology (node adjacencies) of the previous layout computed by d3.treemapResquarify, if there is one and it used the same [target aspect ratio](#squarify_ratio). This tiling method is good for animating changes to treemaps because it only changes node sizes and not their relative positions, thus avoiding distracting shuffling and occlusion. The downside of a stable update, however, is a suboptimal layout for subsequent updates: only the first layout uses the Bruls *et al.* squarified algorithm.
+
+# squarify .ratio (ratio ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/treemap/squarify.js), [Examples](https://observablehq.com/@d3/treemap)
+
+Specifies the desired aspect ratio of the generated rectangles. The *ratio* must be specified as a number greater than or equal to one. Note that the orientation of the generated rectangles (tall or wide) is not implied by the ratio; for example, a ratio of two will attempt to produce a mixture of rectangles whose *width*:*height* ratio is either 2:1 or 1:2. (However, you can approximately achieve this result by generating a square treemap at different dimensions, and then [stretching the treemap](https://observablehq.com/@d3/stretched-treemap) to the desired aspect ratio.) Furthermore, the specified *ratio* is merely a hint to the tiling algorithm; the rectangles are not guaranteed to have the specified aspect ratio. If not specified, the aspect ratio defaults to the golden ratio, φ = (1 + sqrt(5)) / 2, per [Kong *et al.*](http://vis.stanford.edu/papers/perception-treemaps)
+
+### Partition
+
+[# d3.partition () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/partition.js), [Examples](https://observablehq.com/@d3/icicle)
+
+Creates a new partition layout with the default settings.
+
+# partition (root )
+
+Lays out the specified *root* [hierarchy](#hierarchy), assigning the following properties on *root* and its descendants:
+
+* *node*.x0 - the left edge of the rectangle
+* *node*.y0 - the top edge of the rectangle
+* *node*.x1 - the right edge of the rectangle
+* *node*.y1 - the bottom edge of the rectangle
+
+You must call [*root*.sum](#node_sum) before passing the hierarchy to the partition layout. You probably also want to call [*root*.sort](#node_sort) to order the hierarchy before computing the layout.
+
+# partition .size ([size ])
+
+If *size* is specified, sets this partition layout’s size to the specified two-element array of numbers [*width*, *height*] and returns this partition layout. If *size* is not specified, returns the current size, which defaults to [1, 1].
+
+# partition .round ([round ])
+
+If *round* is specified, enables or disables rounding according to the given boolean and returns this partition layout. If *round* is not specified, returns the current rounding state, which defaults to false.
+
+# partition .padding ([padding ])
+
+If *padding* is specified, sets the padding to the specified number and returns this partition layout. If *padding* is not specified, returns the current padding, which defaults to zero. The padding is used to separate a node’s adjacent children.
+
+### Pack
+
+[# d3.pack () · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/pack/index.js), [Examples](https://observablehq.com/@d3/circle-packing)
+
+Creates a new pack layout with the default settings.
+
+# pack (root )
+
+Lays out the specified *root* [hierarchy](#hierarchy), assigning the following properties on *root* and its descendants:
+
+* *node*.x - the *x*-coordinate of the circle’s center
+* *node*.y - the *y*-coordinate of the circle’s center
+* *node*.r - the radius of the circle
+
+You must call [*root*.sum](#node_sum) before passing the hierarchy to the pack layout. You probably also want to call [*root*.sort](#node_sort) to order the hierarchy before computing the layout.
+
+# pack .radius ([radius ])
+
+If *radius* is specified, sets the pack layout’s radius accessor to the specified function and returns this pack layout. If *radius* is not specified, returns the current radius accessor, which defaults to null. If the radius accessor is null, the radius of each leaf circle is derived from the leaf *node*.value (computed by [*node*.sum](#node_sum)); the radii are then scaled proportionally to fit the [layout size](#pack_size). If the radius accessor is not null, the radius of each leaf circle is specified exactly by the function.
+
+# pack .size ([size ])
+
+If *size* is specified, sets this pack layout’s size to the specified two-element array of numbers [*width*, *height*] and returns this pack layout. If *size* is not specified, returns the current size, which defaults to [1, 1].
+
+# pack .padding ([padding ])
+
+If *padding* is specified, sets this pack layout’s padding accessor to the specified number or function and returns this pack layout. If *padding* is not specified, returns the current padding accessor, which defaults to the constant zero. When siblings are packed, tangent siblings will be separated by approximately the specified padding; the enclosing parent circle will also be separated from its children by approximately the specified padding. If an [explicit radius](#pack_radius) is not specified, the padding is approximate because a two-pass algorithm is needed to fit within the [layout size](#pack_size): the circles are first packed without padding; a scaling factor is computed and applied to the specified padding; and lastly the circles are re-packed with padding.
+
+# d3.packSiblings (circles ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/pack/siblings.js)
+
+Packs the specified array of *circles*, each of which must have a *circle*.r property specifying the circle’s radius. Assigns the following properties to each circle:
+
+* *circle*.x - the *x*-coordinate of the circle’s center
+* *circle*.y - the *y*-coordinate of the circle’s center
+
+The circles are positioned according to the front-chain packing algorithm by [Wang *et al.*](https://dl.acm.org/citation.cfm?id=1124851)
+
+# d3.packEnclose (circles ) · [Source](https://github.com/d3/d3-hierarchy/blob/main/src/pack/enclose.js), [Examples](https://observablehq.com/@d3/d3-packenclose)
+
+Computes the [smallest circle](https://en.wikipedia.org/wiki/Smallest-circle_problem) that encloses the specified array of *circles*, each of which must have a *circle*.r property specifying the circle’s radius, and *circle*.x and *circle*.y properties specifying the circle’s center. The enclosing circle is computed using the [Matoušek-Sharir-Welzl algorithm](http://www.inf.ethz.ch/personal/emo/PublFiles/SubexLinProg_ALG16_96.pdf). (See also [Apollonius’ Problem](https://bl.ocks.org/mbostock/751fdd637f4bc2e3f08b).)
diff --git a/node_modules/d3-hierarchy/dist/d3-hierarchy.js b/node_modules/d3-hierarchy/dist/d3-hierarchy.js
new file mode 100644
index 00000000..5896e3e0
--- /dev/null
+++ b/node_modules/d3-hierarchy/dist/d3-hierarchy.js
@@ -0,0 +1,1410 @@
+// https://d3js.org/d3-hierarchy/ v3.1.2 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+})(this, (function (exports) { 'use strict';
+
+function defaultSeparation$1(a, b) {
+ return a.parent === b.parent ? 1 : 2;
+}
+
+function meanX(children) {
+ return children.reduce(meanXReduce, 0) / children.length;
+}
+
+function meanXReduce(x, c) {
+ return x + c.x;
+}
+
+function maxY(children) {
+ return 1 + children.reduce(maxYReduce, 0);
+}
+
+function maxYReduce(y, c) {
+ return Math.max(y, c.y);
+}
+
+function leafLeft(node) {
+ var children;
+ while (children = node.children) node = children[0];
+ return node;
+}
+
+function leafRight(node) {
+ var children;
+ while (children = node.children) node = children[children.length - 1];
+ return node;
+}
+
+function cluster() {
+ var separation = defaultSeparation$1,
+ dx = 1,
+ dy = 1,
+ nodeSize = false;
+
+ function cluster(root) {
+ var previousNode,
+ x = 0;
+
+ // First walk, computing the initial x & y values.
+ root.eachAfter(function(node) {
+ var children = node.children;
+ if (children) {
+ node.x = meanX(children);
+ node.y = maxY(children);
+ } else {
+ node.x = previousNode ? x += separation(node, previousNode) : 0;
+ node.y = 0;
+ previousNode = node;
+ }
+ });
+
+ var left = leafLeft(root),
+ right = leafRight(root),
+ x0 = left.x - separation(left, right) / 2,
+ x1 = right.x + separation(right, left) / 2;
+
+ // Second walk, normalizing x & y to the desired size.
+ return root.eachAfter(nodeSize ? function(node) {
+ node.x = (node.x - root.x) * dx;
+ node.y = (root.y - node.y) * dy;
+ } : function(node) {
+ node.x = (node.x - x0) / (x1 - x0) * dx;
+ node.y = (1 - (root.y ? node.y / root.y : 1)) * dy;
+ });
+ }
+
+ cluster.separation = function(x) {
+ return arguments.length ? (separation = x, cluster) : separation;
+ };
+
+ cluster.size = function(x) {
+ return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? null : [dx, dy]);
+ };
+
+ cluster.nodeSize = function(x) {
+ return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? [dx, dy] : null);
+ };
+
+ return cluster;
+}
+
+function count(node) {
+ var sum = 0,
+ children = node.children,
+ i = children && children.length;
+ if (!i) sum = 1;
+ else while (--i >= 0) sum += children[i].value;
+ node.value = sum;
+}
+
+function node_count() {
+ return this.eachAfter(count);
+}
+
+function node_each(callback, that) {
+ let index = -1;
+ for (const node of this) {
+ callback.call(that, node, ++index, this);
+ }
+ return this;
+}
+
+function node_eachBefore(callback, that) {
+ var node = this, nodes = [node], children, i, index = -1;
+ while (node = nodes.pop()) {
+ callback.call(that, node, ++index, this);
+ if (children = node.children) {
+ for (i = children.length - 1; i >= 0; --i) {
+ nodes.push(children[i]);
+ }
+ }
+ }
+ return this;
+}
+
+function node_eachAfter(callback, that) {
+ var node = this, nodes = [node], next = [], children, i, n, index = -1;
+ while (node = nodes.pop()) {
+ next.push(node);
+ if (children = node.children) {
+ for (i = 0, n = children.length; i < n; ++i) {
+ nodes.push(children[i]);
+ }
+ }
+ }
+ while (node = next.pop()) {
+ callback.call(that, node, ++index, this);
+ }
+ return this;
+}
+
+function node_find(callback, that) {
+ let index = -1;
+ for (const node of this) {
+ if (callback.call(that, node, ++index, this)) {
+ return node;
+ }
+ }
+}
+
+function node_sum(value) {
+ return this.eachAfter(function(node) {
+ var sum = +value(node.data) || 0,
+ children = node.children,
+ i = children && children.length;
+ while (--i >= 0) sum += children[i].value;
+ node.value = sum;
+ });
+}
+
+function node_sort(compare) {
+ return this.eachBefore(function(node) {
+ if (node.children) {
+ node.children.sort(compare);
+ }
+ });
+}
+
+function node_path(end) {
+ var start = this,
+ ancestor = leastCommonAncestor(start, end),
+ nodes = [start];
+ while (start !== ancestor) {
+ start = start.parent;
+ nodes.push(start);
+ }
+ var k = nodes.length;
+ while (end !== ancestor) {
+ nodes.splice(k, 0, end);
+ end = end.parent;
+ }
+ return nodes;
+}
+
+function leastCommonAncestor(a, b) {
+ if (a === b) return a;
+ var aNodes = a.ancestors(),
+ bNodes = b.ancestors(),
+ c = null;
+ a = aNodes.pop();
+ b = bNodes.pop();
+ while (a === b) {
+ c = a;
+ a = aNodes.pop();
+ b = bNodes.pop();
+ }
+ return c;
+}
+
+function node_ancestors() {
+ var node = this, nodes = [node];
+ while (node = node.parent) {
+ nodes.push(node);
+ }
+ return nodes;
+}
+
+function node_descendants() {
+ return Array.from(this);
+}
+
+function node_leaves() {
+ var leaves = [];
+ this.eachBefore(function(node) {
+ if (!node.children) {
+ leaves.push(node);
+ }
+ });
+ return leaves;
+}
+
+function node_links() {
+ var root = this, links = [];
+ root.each(function(node) {
+ if (node !== root) { // Don’t include the root’s parent, if any.
+ links.push({source: node.parent, target: node});
+ }
+ });
+ return links;
+}
+
+function* node_iterator() {
+ var node = this, current, next = [node], children, i, n;
+ do {
+ current = next.reverse(), next = [];
+ while (node = current.pop()) {
+ yield node;
+ if (children = node.children) {
+ for (i = 0, n = children.length; i < n; ++i) {
+ next.push(children[i]);
+ }
+ }
+ }
+ } while (next.length);
+}
+
+function hierarchy(data, children) {
+ if (data instanceof Map) {
+ data = [undefined, data];
+ if (children === undefined) children = mapChildren;
+ } else if (children === undefined) {
+ children = objectChildren;
+ }
+
+ var root = new Node$1(data),
+ node,
+ nodes = [root],
+ child,
+ childs,
+ i,
+ n;
+
+ while (node = nodes.pop()) {
+ if ((childs = children(node.data)) && (n = (childs = Array.from(childs)).length)) {
+ node.children = childs;
+ for (i = n - 1; i >= 0; --i) {
+ nodes.push(child = childs[i] = new Node$1(childs[i]));
+ child.parent = node;
+ child.depth = node.depth + 1;
+ }
+ }
+ }
+
+ return root.eachBefore(computeHeight);
+}
+
+function node_copy() {
+ return hierarchy(this).eachBefore(copyData);
+}
+
+function objectChildren(d) {
+ return d.children;
+}
+
+function mapChildren(d) {
+ return Array.isArray(d) ? d[1] : null;
+}
+
+function copyData(node) {
+ if (node.data.value !== undefined) node.value = node.data.value;
+ node.data = node.data.data;
+}
+
+function computeHeight(node) {
+ var height = 0;
+ do node.height = height;
+ while ((node = node.parent) && (node.height < ++height));
+}
+
+function Node$1(data) {
+ this.data = data;
+ this.depth =
+ this.height = 0;
+ this.parent = null;
+}
+
+Node$1.prototype = hierarchy.prototype = {
+ constructor: Node$1,
+ count: node_count,
+ each: node_each,
+ eachAfter: node_eachAfter,
+ eachBefore: node_eachBefore,
+ find: node_find,
+ sum: node_sum,
+ sort: node_sort,
+ path: node_path,
+ ancestors: node_ancestors,
+ descendants: node_descendants,
+ leaves: node_leaves,
+ links: node_links,
+ copy: node_copy,
+ [Symbol.iterator]: node_iterator
+};
+
+function optional(f) {
+ return f == null ? null : required(f);
+}
+
+function required(f) {
+ if (typeof f !== "function") throw new Error;
+ return f;
+}
+
+function constantZero() {
+ return 0;
+}
+
+function constant(x) {
+ return function() {
+ return x;
+ };
+}
+
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const a = 1664525;
+const c = 1013904223;
+const m = 4294967296; // 2^32
+
+function lcg() {
+ let s = 1;
+ return () => (s = (a * s + c) % m) / m;
+}
+
+function array(x) {
+ return typeof x === "object" && "length" in x
+ ? x // Array, TypedArray, NodeList, array-like
+ : Array.from(x); // Map, Set, iterable, string, or anything else
+}
+
+function shuffle(array, random) {
+ let m = array.length,
+ t,
+ i;
+
+ while (m) {
+ i = random() * m-- | 0;
+ t = array[m];
+ array[m] = array[i];
+ array[i] = t;
+ }
+
+ return array;
+}
+
+function enclose(circles) {
+ return packEncloseRandom(circles, lcg());
+}
+
+function packEncloseRandom(circles, random) {
+ var i = 0, n = (circles = shuffle(Array.from(circles), random)).length, B = [], p, e;
+
+ while (i < n) {
+ p = circles[i];
+ if (e && enclosesWeak(e, p)) ++i;
+ else e = encloseBasis(B = extendBasis(B, p)), i = 0;
+ }
+
+ return e;
+}
+
+function extendBasis(B, p) {
+ var i, j;
+
+ if (enclosesWeakAll(p, B)) return [p];
+
+ // If we get here then B must have at least one element.
+ for (i = 0; i < B.length; ++i) {
+ if (enclosesNot(p, B[i])
+ && enclosesWeakAll(encloseBasis2(B[i], p), B)) {
+ return [B[i], p];
+ }
+ }
+
+ // If we get here then B must have at least two elements.
+ for (i = 0; i < B.length - 1; ++i) {
+ for (j = i + 1; j < B.length; ++j) {
+ if (enclosesNot(encloseBasis2(B[i], B[j]), p)
+ && enclosesNot(encloseBasis2(B[i], p), B[j])
+ && enclosesNot(encloseBasis2(B[j], p), B[i])
+ && enclosesWeakAll(encloseBasis3(B[i], B[j], p), B)) {
+ return [B[i], B[j], p];
+ }
+ }
+ }
+
+ // If we get here then something is very wrong.
+ throw new Error;
+}
+
+function enclosesNot(a, b) {
+ var dr = a.r - b.r, dx = b.x - a.x, dy = b.y - a.y;
+ return dr < 0 || dr * dr < dx * dx + dy * dy;
+}
+
+function enclosesWeak(a, b) {
+ var dr = a.r - b.r + Math.max(a.r, b.r, 1) * 1e-9, dx = b.x - a.x, dy = b.y - a.y;
+ return dr > 0 && dr * dr > dx * dx + dy * dy;
+}
+
+function enclosesWeakAll(a, B) {
+ for (var i = 0; i < B.length; ++i) {
+ if (!enclosesWeak(a, B[i])) {
+ return false;
+ }
+ }
+ return true;
+}
+
+function encloseBasis(B) {
+ switch (B.length) {
+ case 1: return encloseBasis1(B[0]);
+ case 2: return encloseBasis2(B[0], B[1]);
+ case 3: return encloseBasis3(B[0], B[1], B[2]);
+ }
+}
+
+function encloseBasis1(a) {
+ return {
+ x: a.x,
+ y: a.y,
+ r: a.r
+ };
+}
+
+function encloseBasis2(a, b) {
+ var x1 = a.x, y1 = a.y, r1 = a.r,
+ x2 = b.x, y2 = b.y, r2 = b.r,
+ x21 = x2 - x1, y21 = y2 - y1, r21 = r2 - r1,
+ l = Math.sqrt(x21 * x21 + y21 * y21);
+ return {
+ x: (x1 + x2 + x21 / l * r21) / 2,
+ y: (y1 + y2 + y21 / l * r21) / 2,
+ r: (l + r1 + r2) / 2
+ };
+}
+
+function encloseBasis3(a, b, c) {
+ var x1 = a.x, y1 = a.y, r1 = a.r,
+ x2 = b.x, y2 = b.y, r2 = b.r,
+ x3 = c.x, y3 = c.y, r3 = c.r,
+ a2 = x1 - x2,
+ a3 = x1 - x3,
+ b2 = y1 - y2,
+ b3 = y1 - y3,
+ c2 = r2 - r1,
+ c3 = r3 - r1,
+ d1 = x1 * x1 + y1 * y1 - r1 * r1,
+ d2 = d1 - x2 * x2 - y2 * y2 + r2 * r2,
+ d3 = d1 - x3 * x3 - y3 * y3 + r3 * r3,
+ ab = a3 * b2 - a2 * b3,
+ xa = (b2 * d3 - b3 * d2) / (ab * 2) - x1,
+ xb = (b3 * c2 - b2 * c3) / ab,
+ ya = (a3 * d2 - a2 * d3) / (ab * 2) - y1,
+ yb = (a2 * c3 - a3 * c2) / ab,
+ A = xb * xb + yb * yb - 1,
+ B = 2 * (r1 + xa * xb + ya * yb),
+ C = xa * xa + ya * ya - r1 * r1,
+ r = -(Math.abs(A) > 1e-6 ? (B + Math.sqrt(B * B - 4 * A * C)) / (2 * A) : C / B);
+ return {
+ x: x1 + xa + xb * r,
+ y: y1 + ya + yb * r,
+ r: r
+ };
+}
+
+function place(b, a, c) {
+ var dx = b.x - a.x, x, a2,
+ dy = b.y - a.y, y, b2,
+ d2 = dx * dx + dy * dy;
+ if (d2) {
+ a2 = a.r + c.r, a2 *= a2;
+ b2 = b.r + c.r, b2 *= b2;
+ if (a2 > b2) {
+ x = (d2 + b2 - a2) / (2 * d2);
+ y = Math.sqrt(Math.max(0, b2 / d2 - x * x));
+ c.x = b.x - x * dx - y * dy;
+ c.y = b.y - x * dy + y * dx;
+ } else {
+ x = (d2 + a2 - b2) / (2 * d2);
+ y = Math.sqrt(Math.max(0, a2 / d2 - x * x));
+ c.x = a.x + x * dx - y * dy;
+ c.y = a.y + x * dy + y * dx;
+ }
+ } else {
+ c.x = a.x + c.r;
+ c.y = a.y;
+ }
+}
+
+function intersects(a, b) {
+ var dr = a.r + b.r - 1e-6, dx = b.x - a.x, dy = b.y - a.y;
+ return dr > 0 && dr * dr > dx * dx + dy * dy;
+}
+
+function score(node) {
+ var a = node._,
+ b = node.next._,
+ ab = a.r + b.r,
+ dx = (a.x * b.r + b.x * a.r) / ab,
+ dy = (a.y * b.r + b.y * a.r) / ab;
+ return dx * dx + dy * dy;
+}
+
+function Node(circle) {
+ this._ = circle;
+ this.next = null;
+ this.previous = null;
+}
+
+function packSiblingsRandom(circles, random) {
+ if (!(n = (circles = array(circles)).length)) return 0;
+
+ var a, b, c, n, aa, ca, i, j, k, sj, sk;
+
+ // Place the first circle.
+ a = circles[0], a.x = 0, a.y = 0;
+ if (!(n > 1)) return a.r;
+
+ // Place the second circle.
+ b = circles[1], a.x = -b.r, b.x = a.r, b.y = 0;
+ if (!(n > 2)) return a.r + b.r;
+
+ // Place the third circle.
+ place(b, a, c = circles[2]);
+
+ // Initialize the front-chain using the first three circles a, b and c.
+ a = new Node(a), b = new Node(b), c = new Node(c);
+ a.next = c.previous = b;
+ b.next = a.previous = c;
+ c.next = b.previous = a;
+
+ // Attempt to place each remaining circle…
+ pack: for (i = 3; i < n; ++i) {
+ place(a._, b._, c = circles[i]), c = new Node(c);
+
+ // Find the closest intersecting circle on the front-chain, if any.
+ // “Closeness” is determined by linear distance along the front-chain.
+ // “Ahead” or “behind” is likewise determined by linear distance.
+ j = b.next, k = a.previous, sj = b._.r, sk = a._.r;
+ do {
+ if (sj <= sk) {
+ if (intersects(j._, c._)) {
+ b = j, a.next = b, b.previous = a, --i;
+ continue pack;
+ }
+ sj += j._.r, j = j.next;
+ } else {
+ if (intersects(k._, c._)) {
+ a = k, a.next = b, b.previous = a, --i;
+ continue pack;
+ }
+ sk += k._.r, k = k.previous;
+ }
+ } while (j !== k.next);
+
+ // Success! Insert the new circle c between a and b.
+ c.previous = a, c.next = b, a.next = b.previous = b = c;
+
+ // Compute the new closest circle pair to the centroid.
+ aa = score(a);
+ while ((c = c.next) !== b) {
+ if ((ca = score(c)) < aa) {
+ a = c, aa = ca;
+ }
+ }
+ b = a.next;
+ }
+
+ // Compute the enclosing circle of the front chain.
+ a = [b._], c = b; while ((c = c.next) !== b) a.push(c._); c = packEncloseRandom(a, random);
+
+ // Translate the circles to put the enclosing circle around the origin.
+ for (i = 0; i < n; ++i) a = circles[i], a.x -= c.x, a.y -= c.y;
+
+ return c.r;
+}
+
+function siblings(circles) {
+ packSiblingsRandom(circles, lcg());
+ return circles;
+}
+
+function defaultRadius(d) {
+ return Math.sqrt(d.value);
+}
+
+function index$1() {
+ var radius = null,
+ dx = 1,
+ dy = 1,
+ padding = constantZero;
+
+ function pack(root) {
+ const random = lcg();
+ root.x = dx / 2, root.y = dy / 2;
+ if (radius) {
+ root.eachBefore(radiusLeaf(radius))
+ .eachAfter(packChildrenRandom(padding, 0.5, random))
+ .eachBefore(translateChild(1));
+ } else {
+ root.eachBefore(radiusLeaf(defaultRadius))
+ .eachAfter(packChildrenRandom(constantZero, 1, random))
+ .eachAfter(packChildrenRandom(padding, root.r / Math.min(dx, dy), random))
+ .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r)));
+ }
+ return root;
+ }
+
+ pack.radius = function(x) {
+ return arguments.length ? (radius = optional(x), pack) : radius;
+ };
+
+ pack.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], pack) : [dx, dy];
+ };
+
+ pack.padding = function(x) {
+ return arguments.length ? (padding = typeof x === "function" ? x : constant(+x), pack) : padding;
+ };
+
+ return pack;
+}
+
+function radiusLeaf(radius) {
+ return function(node) {
+ if (!node.children) {
+ node.r = Math.max(0, +radius(node) || 0);
+ }
+ };
+}
+
+function packChildrenRandom(padding, k, random) {
+ return function(node) {
+ if (children = node.children) {
+ var children,
+ i,
+ n = children.length,
+ r = padding(node) * k || 0,
+ e;
+
+ if (r) for (i = 0; i < n; ++i) children[i].r += r;
+ e = packSiblingsRandom(children, random);
+ if (r) for (i = 0; i < n; ++i) children[i].r -= r;
+ node.r = e + r;
+ }
+ };
+}
+
+function translateChild(k) {
+ return function(node) {
+ var parent = node.parent;
+ node.r *= k;
+ if (parent) {
+ node.x = parent.x + k * node.x;
+ node.y = parent.y + k * node.y;
+ }
+ };
+}
+
+function roundNode(node) {
+ node.x0 = Math.round(node.x0);
+ node.y0 = Math.round(node.y0);
+ node.x1 = Math.round(node.x1);
+ node.y1 = Math.round(node.y1);
+}
+
+function treemapDice(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ node,
+ i = -1,
+ n = nodes.length,
+ k = parent.value && (x1 - x0) / parent.value;
+
+ while (++i < n) {
+ node = nodes[i], node.y0 = y0, node.y1 = y1;
+ node.x0 = x0, node.x1 = x0 += node.value * k;
+ }
+}
+
+function partition() {
+ var dx = 1,
+ dy = 1,
+ padding = 0,
+ round = false;
+
+ function partition(root) {
+ var n = root.height + 1;
+ root.x0 =
+ root.y0 = padding;
+ root.x1 = dx;
+ root.y1 = dy / n;
+ root.eachBefore(positionNode(dy, n));
+ if (round) root.eachBefore(roundNode);
+ return root;
+ }
+
+ function positionNode(dy, n) {
+ return function(node) {
+ if (node.children) {
+ treemapDice(node, node.x0, dy * (node.depth + 1) / n, node.x1, dy * (node.depth + 2) / n);
+ }
+ var x0 = node.x0,
+ y0 = node.y0,
+ x1 = node.x1 - padding,
+ y1 = node.y1 - padding;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ node.x0 = x0;
+ node.y0 = y0;
+ node.x1 = x1;
+ node.y1 = y1;
+ };
+ }
+
+ partition.round = function(x) {
+ return arguments.length ? (round = !!x, partition) : round;
+ };
+
+ partition.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], partition) : [dx, dy];
+ };
+
+ partition.padding = function(x) {
+ return arguments.length ? (padding = +x, partition) : padding;
+ };
+
+ return partition;
+}
+
+var preroot = {depth: -1},
+ ambiguous = {},
+ imputed = {};
+
+function defaultId(d) {
+ return d.id;
+}
+
+function defaultParentId(d) {
+ return d.parentId;
+}
+
+function stratify() {
+ var id = defaultId,
+ parentId = defaultParentId,
+ path;
+
+ function stratify(data) {
+ var nodes = Array.from(data),
+ currentId = id,
+ currentParentId = parentId,
+ n,
+ d,
+ i,
+ root,
+ parent,
+ node,
+ nodeId,
+ nodeKey,
+ nodeByKey = new Map;
+
+ if (path != null) {
+ const I = nodes.map((d, i) => normalize(path(d, i, data)));
+ const P = I.map(parentof);
+ const S = new Set(I).add("");
+ for (const i of P) {
+ if (!S.has(i)) {
+ S.add(i);
+ I.push(i);
+ P.push(parentof(i));
+ nodes.push(imputed);
+ }
+ }
+ currentId = (_, i) => I[i];
+ currentParentId = (_, i) => P[i];
+ }
+
+ for (i = 0, n = nodes.length; i < n; ++i) {
+ d = nodes[i], node = nodes[i] = new Node$1(d);
+ if ((nodeId = currentId(d, i, data)) != null && (nodeId += "")) {
+ nodeKey = node.id = nodeId;
+ nodeByKey.set(nodeKey, nodeByKey.has(nodeKey) ? ambiguous : node);
+ }
+ if ((nodeId = currentParentId(d, i, data)) != null && (nodeId += "")) {
+ node.parent = nodeId;
+ }
+ }
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ if (nodeId = node.parent) {
+ parent = nodeByKey.get(nodeId);
+ if (!parent) throw new Error("missing: " + nodeId);
+ if (parent === ambiguous) throw new Error("ambiguous: " + nodeId);
+ if (parent.children) parent.children.push(node);
+ else parent.children = [node];
+ node.parent = parent;
+ } else {
+ if (root) throw new Error("multiple roots");
+ root = node;
+ }
+ }
+
+ if (!root) throw new Error("no root");
+
+ // When imputing internal nodes, only introduce roots if needed.
+ // Then replace the imputed marker data with null.
+ if (path != null) {
+ while (root.data === imputed && root.children.length === 1) {
+ root = root.children[0], --n;
+ }
+ for (let i = nodes.length - 1; i >= 0; --i) {
+ node = nodes[i];
+ if (node.data !== imputed) break;
+ node.data = null;
+ }
+ }
+
+ root.parent = preroot;
+ root.eachBefore(function(node) { node.depth = node.parent.depth + 1; --n; }).eachBefore(computeHeight);
+ root.parent = null;
+ if (n > 0) throw new Error("cycle");
+
+ return root;
+ }
+
+ stratify.id = function(x) {
+ return arguments.length ? (id = optional(x), stratify) : id;
+ };
+
+ stratify.parentId = function(x) {
+ return arguments.length ? (parentId = optional(x), stratify) : parentId;
+ };
+
+ stratify.path = function(x) {
+ return arguments.length ? (path = optional(x), stratify) : path;
+ };
+
+ return stratify;
+}
+
+// To normalize a path, we coerce to a string, strip the trailing slash if any
+// (as long as the trailing slash is not immediately preceded by another slash),
+// and add leading slash if missing.
+function normalize(path) {
+ path = `${path}`;
+ let i = path.length;
+ if (slash(path, i - 1) && !slash(path, i - 2)) path = path.slice(0, -1);
+ return path[0] === "/" ? path : `/${path}`;
+}
+
+// Walk backwards to find the first slash that is not the leading slash, e.g.:
+// "/foo/bar" ⇥ "/foo", "/foo" ⇥ "/", "/" ↦ "". (The root is special-cased
+// because the id of the root must be a truthy value.)
+function parentof(path) {
+ let i = path.length;
+ if (i < 2) return "";
+ while (--i > 1) if (slash(path, i)) break;
+ return path.slice(0, i);
+}
+
+// Slashes can be escaped; to determine whether a slash is a path delimiter, we
+// count the number of preceding backslashes escaping the forward slash: an odd
+// number indicates an escaped forward slash.
+function slash(path, i) {
+ if (path[i] === "/") {
+ let k = 0;
+ while (i > 0 && path[--i] === "\\") ++k;
+ if ((k & 1) === 0) return true;
+ }
+ return false;
+}
+
+function defaultSeparation(a, b) {
+ return a.parent === b.parent ? 1 : 2;
+}
+
+// function radialSeparation(a, b) {
+// return (a.parent === b.parent ? 1 : 2) / a.depth;
+// }
+
+// This function is used to traverse the left contour of a subtree (or
+// subforest). It returns the successor of v on this contour. This successor is
+// either given by the leftmost child of v or by the thread of v. The function
+// returns null if and only if v is on the highest level of its subtree.
+function nextLeft(v) {
+ var children = v.children;
+ return children ? children[0] : v.t;
+}
+
+// This function works analogously to nextLeft.
+function nextRight(v) {
+ var children = v.children;
+ return children ? children[children.length - 1] : v.t;
+}
+
+// Shifts the current subtree rooted at w+. This is done by increasing
+// prelim(w+) and mod(w+) by shift.
+function moveSubtree(wm, wp, shift) {
+ var change = shift / (wp.i - wm.i);
+ wp.c -= change;
+ wp.s += shift;
+ wm.c += change;
+ wp.z += shift;
+ wp.m += shift;
+}
+
+// All other shifts, applied to the smaller subtrees between w- and w+, are
+// performed by this function. To prepare the shifts, we have to adjust
+// change(w+), shift(w+), and change(w-).
+function executeShifts(v) {
+ var shift = 0,
+ change = 0,
+ children = v.children,
+ i = children.length,
+ w;
+ while (--i >= 0) {
+ w = children[i];
+ w.z += shift;
+ w.m += shift;
+ shift += w.s + (change += w.c);
+ }
+}
+
+// If vi-’s ancestor is a sibling of v, returns vi-’s ancestor. Otherwise,
+// returns the specified (default) ancestor.
+function nextAncestor(vim, v, ancestor) {
+ return vim.a.parent === v.parent ? vim.a : ancestor;
+}
+
+function TreeNode(node, i) {
+ this._ = node;
+ this.parent = null;
+ this.children = null;
+ this.A = null; // default ancestor
+ this.a = this; // ancestor
+ this.z = 0; // prelim
+ this.m = 0; // mod
+ this.c = 0; // change
+ this.s = 0; // shift
+ this.t = null; // thread
+ this.i = i; // number
+}
+
+TreeNode.prototype = Object.create(Node$1.prototype);
+
+function treeRoot(root) {
+ var tree = new TreeNode(root, 0),
+ node,
+ nodes = [tree],
+ child,
+ children,
+ i,
+ n;
+
+ while (node = nodes.pop()) {
+ if (children = node._.children) {
+ node.children = new Array(n = children.length);
+ for (i = n - 1; i >= 0; --i) {
+ nodes.push(child = node.children[i] = new TreeNode(children[i], i));
+ child.parent = node;
+ }
+ }
+ }
+
+ (tree.parent = new TreeNode(null, 0)).children = [tree];
+ return tree;
+}
+
+// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
+function tree() {
+ var separation = defaultSeparation,
+ dx = 1,
+ dy = 1,
+ nodeSize = null;
+
+ function tree(root) {
+ var t = treeRoot(root);
+
+ // Compute the layout using Buchheim et al.’s algorithm.
+ t.eachAfter(firstWalk), t.parent.m = -t.z;
+ t.eachBefore(secondWalk);
+
+ // If a fixed node size is specified, scale x and y.
+ if (nodeSize) root.eachBefore(sizeNode);
+
+ // If a fixed tree size is specified, scale x and y based on the extent.
+ // Compute the left-most, right-most, and depth-most nodes for extents.
+ else {
+ var left = root,
+ right = root,
+ bottom = root;
+ root.eachBefore(function(node) {
+ if (node.x < left.x) left = node;
+ if (node.x > right.x) right = node;
+ if (node.depth > bottom.depth) bottom = node;
+ });
+ var s = left === right ? 1 : separation(left, right) / 2,
+ tx = s - left.x,
+ kx = dx / (right.x + s + tx),
+ ky = dy / (bottom.depth || 1);
+ root.eachBefore(function(node) {
+ node.x = (node.x + tx) * kx;
+ node.y = node.depth * ky;
+ });
+ }
+
+ return root;
+ }
+
+ // Computes a preliminary x-coordinate for v. Before that, FIRST WALK is
+ // applied recursively to the children of v, as well as the function
+ // APPORTION. After spacing out the children by calling EXECUTE SHIFTS, the
+ // node v is placed to the midpoint of its outermost children.
+ function firstWalk(v) {
+ var children = v.children,
+ siblings = v.parent.children,
+ w = v.i ? siblings[v.i - 1] : null;
+ if (children) {
+ executeShifts(v);
+ var midpoint = (children[0].z + children[children.length - 1].z) / 2;
+ if (w) {
+ v.z = w.z + separation(v._, w._);
+ v.m = v.z - midpoint;
+ } else {
+ v.z = midpoint;
+ }
+ } else if (w) {
+ v.z = w.z + separation(v._, w._);
+ }
+ v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
+ }
+
+ // Computes all real x-coordinates by summing up the modifiers recursively.
+ function secondWalk(v) {
+ v._.x = v.z + v.parent.m;
+ v.m += v.parent.m;
+ }
+
+ // The core of the algorithm. Here, a new subtree is combined with the
+ // previous subtrees. Threads are used to traverse the inside and outside
+ // contours of the left and right subtree up to the highest common level. The
+ // vertices used for the traversals are vi+, vi-, vo-, and vo+, where the
+ // superscript o means outside and i means inside, the subscript - means left
+ // subtree and + means right subtree. For summing up the modifiers along the
+ // contour, we use respective variables si+, si-, so-, and so+. Whenever two
+ // nodes of the inside contours conflict, we compute the left one of the
+ // greatest uncommon ancestors using the function ANCESTOR and call MOVE
+ // SUBTREE to shift the subtree and prepare the shifts of smaller subtrees.
+ // Finally, we add a new thread (if necessary).
+ function apportion(v, w, ancestor) {
+ if (w) {
+ var vip = v,
+ vop = v,
+ vim = w,
+ vom = vip.parent.children[0],
+ sip = vip.m,
+ sop = vop.m,
+ sim = vim.m,
+ som = vom.m,
+ shift;
+ while (vim = nextRight(vim), vip = nextLeft(vip), vim && vip) {
+ vom = nextLeft(vom);
+ vop = nextRight(vop);
+ vop.a = v;
+ shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
+ if (shift > 0) {
+ moveSubtree(nextAncestor(vim, v, ancestor), v, shift);
+ sip += shift;
+ sop += shift;
+ }
+ sim += vim.m;
+ sip += vip.m;
+ som += vom.m;
+ sop += vop.m;
+ }
+ if (vim && !nextRight(vop)) {
+ vop.t = vim;
+ vop.m += sim - sop;
+ }
+ if (vip && !nextLeft(vom)) {
+ vom.t = vip;
+ vom.m += sip - som;
+ ancestor = v;
+ }
+ }
+ return ancestor;
+ }
+
+ function sizeNode(node) {
+ node.x *= dx;
+ node.y = node.depth * dy;
+ }
+
+ tree.separation = function(x) {
+ return arguments.length ? (separation = x, tree) : separation;
+ };
+
+ tree.size = function(x) {
+ return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], tree) : (nodeSize ? null : [dx, dy]);
+ };
+
+ tree.nodeSize = function(x) {
+ return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], tree) : (nodeSize ? [dx, dy] : null);
+ };
+
+ return tree;
+}
+
+function treemapSlice(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ node,
+ i = -1,
+ n = nodes.length,
+ k = parent.value && (y1 - y0) / parent.value;
+
+ while (++i < n) {
+ node = nodes[i], node.x0 = x0, node.x1 = x1;
+ node.y0 = y0, node.y1 = y0 += node.value * k;
+ }
+}
+
+var phi = (1 + Math.sqrt(5)) / 2;
+
+function squarifyRatio(ratio, parent, x0, y0, x1, y1) {
+ var rows = [],
+ nodes = parent.children,
+ row,
+ nodeValue,
+ i0 = 0,
+ i1 = 0,
+ n = nodes.length,
+ dx, dy,
+ value = parent.value,
+ sumValue,
+ minValue,
+ maxValue,
+ newRatio,
+ minRatio,
+ alpha,
+ beta;
+
+ while (i0 < n) {
+ dx = x1 - x0, dy = y1 - y0;
+
+ // Find the next non-empty node.
+ do sumValue = nodes[i1++].value; while (!sumValue && i1 < n);
+ minValue = maxValue = sumValue;
+ alpha = Math.max(dy / dx, dx / dy) / (value * ratio);
+ beta = sumValue * sumValue * alpha;
+ minRatio = Math.max(maxValue / beta, beta / minValue);
+
+ // Keep adding nodes while the aspect ratio maintains or improves.
+ for (; i1 < n; ++i1) {
+ sumValue += nodeValue = nodes[i1].value;
+ if (nodeValue < minValue) minValue = nodeValue;
+ if (nodeValue > maxValue) maxValue = nodeValue;
+ beta = sumValue * sumValue * alpha;
+ newRatio = Math.max(maxValue / beta, beta / minValue);
+ if (newRatio > minRatio) { sumValue -= nodeValue; break; }
+ minRatio = newRatio;
+ }
+
+ // Position and record the row orientation.
+ rows.push(row = {value: sumValue, dice: dx < dy, children: nodes.slice(i0, i1)});
+ if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += dy * sumValue / value : y1);
+ else treemapSlice(row, x0, y0, value ? x0 += dx * sumValue / value : x1, y1);
+ value -= sumValue, i0 = i1;
+ }
+
+ return rows;
+}
+
+var squarify = (function custom(ratio) {
+
+ function squarify(parent, x0, y0, x1, y1) {
+ squarifyRatio(ratio, parent, x0, y0, x1, y1);
+ }
+
+ squarify.ratio = function(x) {
+ return custom((x = +x) > 1 ? x : 1);
+ };
+
+ return squarify;
+})(phi);
+
+function index() {
+ var tile = squarify,
+ round = false,
+ dx = 1,
+ dy = 1,
+ paddingStack = [0],
+ paddingInner = constantZero,
+ paddingTop = constantZero,
+ paddingRight = constantZero,
+ paddingBottom = constantZero,
+ paddingLeft = constantZero;
+
+ function treemap(root) {
+ root.x0 =
+ root.y0 = 0;
+ root.x1 = dx;
+ root.y1 = dy;
+ root.eachBefore(positionNode);
+ paddingStack = [0];
+ if (round) root.eachBefore(roundNode);
+ return root;
+ }
+
+ function positionNode(node) {
+ var p = paddingStack[node.depth],
+ x0 = node.x0 + p,
+ y0 = node.y0 + p,
+ x1 = node.x1 - p,
+ y1 = node.y1 - p;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ node.x0 = x0;
+ node.y0 = y0;
+ node.x1 = x1;
+ node.y1 = y1;
+ if (node.children) {
+ p = paddingStack[node.depth + 1] = paddingInner(node) / 2;
+ x0 += paddingLeft(node) - p;
+ y0 += paddingTop(node) - p;
+ x1 -= paddingRight(node) - p;
+ y1 -= paddingBottom(node) - p;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ tile(node, x0, y0, x1, y1);
+ }
+ }
+
+ treemap.round = function(x) {
+ return arguments.length ? (round = !!x, treemap) : round;
+ };
+
+ treemap.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], treemap) : [dx, dy];
+ };
+
+ treemap.tile = function(x) {
+ return arguments.length ? (tile = required(x), treemap) : tile;
+ };
+
+ treemap.padding = function(x) {
+ return arguments.length ? treemap.paddingInner(x).paddingOuter(x) : treemap.paddingInner();
+ };
+
+ treemap.paddingInner = function(x) {
+ return arguments.length ? (paddingInner = typeof x === "function" ? x : constant(+x), treemap) : paddingInner;
+ };
+
+ treemap.paddingOuter = function(x) {
+ return arguments.length ? treemap.paddingTop(x).paddingRight(x).paddingBottom(x).paddingLeft(x) : treemap.paddingTop();
+ };
+
+ treemap.paddingTop = function(x) {
+ return arguments.length ? (paddingTop = typeof x === "function" ? x : constant(+x), treemap) : paddingTop;
+ };
+
+ treemap.paddingRight = function(x) {
+ return arguments.length ? (paddingRight = typeof x === "function" ? x : constant(+x), treemap) : paddingRight;
+ };
+
+ treemap.paddingBottom = function(x) {
+ return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant(+x), treemap) : paddingBottom;
+ };
+
+ treemap.paddingLeft = function(x) {
+ return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant(+x), treemap) : paddingLeft;
+ };
+
+ return treemap;
+}
+
+function binary(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ i, n = nodes.length,
+ sum, sums = new Array(n + 1);
+
+ for (sums[0] = sum = i = 0; i < n; ++i) {
+ sums[i + 1] = sum += nodes[i].value;
+ }
+
+ partition(0, n, parent.value, x0, y0, x1, y1);
+
+ function partition(i, j, value, x0, y0, x1, y1) {
+ if (i >= j - 1) {
+ var node = nodes[i];
+ node.x0 = x0, node.y0 = y0;
+ node.x1 = x1, node.y1 = y1;
+ return;
+ }
+
+ var valueOffset = sums[i],
+ valueTarget = (value / 2) + valueOffset,
+ k = i + 1,
+ hi = j - 1;
+
+ while (k < hi) {
+ var mid = k + hi >>> 1;
+ if (sums[mid] < valueTarget) k = mid + 1;
+ else hi = mid;
+ }
+
+ if ((valueTarget - sums[k - 1]) < (sums[k] - valueTarget) && i + 1 < k) --k;
+
+ var valueLeft = sums[k] - valueOffset,
+ valueRight = value - valueLeft;
+
+ if ((x1 - x0) > (y1 - y0)) {
+ var xk = value ? (x0 * valueRight + x1 * valueLeft) / value : x1;
+ partition(i, k, valueLeft, x0, y0, xk, y1);
+ partition(k, j, valueRight, xk, y0, x1, y1);
+ } else {
+ var yk = value ? (y0 * valueRight + y1 * valueLeft) / value : y1;
+ partition(i, k, valueLeft, x0, y0, x1, yk);
+ partition(k, j, valueRight, x0, yk, x1, y1);
+ }
+ }
+}
+
+function sliceDice(parent, x0, y0, x1, y1) {
+ (parent.depth & 1 ? treemapSlice : treemapDice)(parent, x0, y0, x1, y1);
+}
+
+var resquarify = (function custom(ratio) {
+
+ function resquarify(parent, x0, y0, x1, y1) {
+ if ((rows = parent._squarify) && (rows.ratio === ratio)) {
+ var rows,
+ row,
+ nodes,
+ i,
+ j = -1,
+ n,
+ m = rows.length,
+ value = parent.value;
+
+ while (++j < m) {
+ row = rows[j], nodes = row.children;
+ for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
+ if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1);
+ else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1);
+ value -= row.value;
+ }
+ } else {
+ parent._squarify = rows = squarifyRatio(ratio, parent, x0, y0, x1, y1);
+ rows.ratio = ratio;
+ }
+ }
+
+ resquarify.ratio = function(x) {
+ return custom((x = +x) > 1 ? x : 1);
+ };
+
+ return resquarify;
+})(phi);
+
+exports.Node = Node$1;
+exports.cluster = cluster;
+exports.hierarchy = hierarchy;
+exports.pack = index$1;
+exports.packEnclose = enclose;
+exports.packSiblings = siblings;
+exports.partition = partition;
+exports.stratify = stratify;
+exports.tree = tree;
+exports.treemap = index;
+exports.treemapBinary = binary;
+exports.treemapDice = treemapDice;
+exports.treemapResquarify = resquarify;
+exports.treemapSlice = treemapSlice;
+exports.treemapSliceDice = sliceDice;
+exports.treemapSquarify = squarify;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/node_modules/d3-hierarchy/dist/d3-hierarchy.min.js b/node_modules/d3-hierarchy/dist/d3-hierarchy.min.js
new file mode 100644
index 00000000..d91fffb7
--- /dev/null
+++ b/node_modules/d3-hierarchy/dist/d3-hierarchy.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-hierarchy/ v3.1.2 Copyright 2010-2021 Mike Bostock
+!function(n,r){"object"==typeof exports&&"undefined"!=typeof module?r(exports):"function"==typeof define&&define.amd?define(["exports"],r):r((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{})}(this,(function(n){"use strict";function r(n,r){return n.parent===r.parent?1:2}function t(n,r){return n+r.x}function e(n,r){return Math.max(n,r.y)}function i(n){var r=0,t=n.children,e=t&&t.length;if(e)for(;--e>=0;)r+=t[e].value;else r=1;n.value=r}function u(n,r){n instanceof Map?(n=[void 0,n],void 0===r&&(r=f)):void 0===r&&(r=o);for(var t,e,i,u,a,l=new h(n),p=[l];t=p.pop();)if((i=r(t.data))&&(a=(i=Array.from(i)).length))for(t.children=i,u=a-1;u>=0;--u)p.push(e=i[u]=new h(i[u])),e.parent=t,e.depth=t.depth+1;return l.eachBefore(c)}function o(n){return n.children}function f(n){return Array.isArray(n)?n[1]:null}function a(n){void 0!==n.data.value&&(n.value=n.data.value),n.data=n.data.data}function c(n){var r=0;do{n.height=r}while((n=n.parent)&&n.height<++r)}function 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diff --git a/node_modules/d3-hierarchy/package.json b/node_modules/d3-hierarchy/package.json
new file mode 100644
index 00000000..d3739915
--- /dev/null
+++ b/node_modules/d3-hierarchy/package.json
@@ -0,0 +1,84 @@
+{
+ "_from": "d3-hierarchy@3",
+ "_id": "d3-hierarchy@3.1.2",
+ "_inBundle": false,
+ "_integrity": "sha512-FX/9frcub54beBdugHjDCdikxThEqjnR93Qt7PvQTOHxyiNCAlvMrHhclk3cD5VeAaq9fxmfRp+CnWw9rEMBuA==",
+ "_location": "/d3-hierarchy",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-hierarchy@3",
+ "name": "d3-hierarchy",
+ "escapedName": "d3-hierarchy",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-hierarchy/-/d3-hierarchy-3.1.2.tgz",
+ "_shasum": "b01cd42c1eed3d46db77a5966cf726f8c09160c6",
+ "_spec": "d3-hierarchy@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-hierarchy/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Layout algorithms for visualizing hierarchical data.",
+ "devDependencies": {
+ "benchmark": "2",
+ "d3-array": "1.2.0 - 3",
+ "d3-dsv": "1 - 3",
+ "d3-random": "1.1.0 - 3",
+ "eslint": "8",
+ "mocha": "9",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-hierarchy.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-hierarchy/",
+ "jsdelivr": "dist/d3-hierarchy.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "layout",
+ "tree",
+ "treemap",
+ "hierarchy",
+ "infovis"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-hierarchy",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-hierarchy.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-hierarchy.min.js",
+ "version": "3.1.2"
+}
diff --git a/node_modules/d3-hierarchy/src/accessors.js b/node_modules/d3-hierarchy/src/accessors.js
new file mode 100644
index 00000000..369c4145
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/accessors.js
@@ -0,0 +1,8 @@
+export function optional(f) {
+ return f == null ? null : required(f);
+}
+
+export function required(f) {
+ if (typeof f !== "function") throw new Error;
+ return f;
+}
diff --git a/node_modules/d3-hierarchy/src/array.js b/node_modules/d3-hierarchy/src/array.js
new file mode 100644
index 00000000..b46d1b9c
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/array.js
@@ -0,0 +1,20 @@
+export default function(x) {
+ return typeof x === "object" && "length" in x
+ ? x // Array, TypedArray, NodeList, array-like
+ : Array.from(x); // Map, Set, iterable, string, or anything else
+}
+
+export function shuffle(array, random) {
+ let m = array.length,
+ t,
+ i;
+
+ while (m) {
+ i = random() * m-- | 0;
+ t = array[m];
+ array[m] = array[i];
+ array[i] = t;
+ }
+
+ return array;
+}
diff --git a/node_modules/d3-hierarchy/src/cluster.js b/node_modules/d3-hierarchy/src/cluster.js
new file mode 100644
index 00000000..f5a280e2
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/cluster.js
@@ -0,0 +1,84 @@
+function defaultSeparation(a, b) {
+ return a.parent === b.parent ? 1 : 2;
+}
+
+function meanX(children) {
+ return children.reduce(meanXReduce, 0) / children.length;
+}
+
+function meanXReduce(x, c) {
+ return x + c.x;
+}
+
+function maxY(children) {
+ return 1 + children.reduce(maxYReduce, 0);
+}
+
+function maxYReduce(y, c) {
+ return Math.max(y, c.y);
+}
+
+function leafLeft(node) {
+ var children;
+ while (children = node.children) node = children[0];
+ return node;
+}
+
+function leafRight(node) {
+ var children;
+ while (children = node.children) node = children[children.length - 1];
+ return node;
+}
+
+export default function() {
+ var separation = defaultSeparation,
+ dx = 1,
+ dy = 1,
+ nodeSize = false;
+
+ function cluster(root) {
+ var previousNode,
+ x = 0;
+
+ // First walk, computing the initial x & y values.
+ root.eachAfter(function(node) {
+ var children = node.children;
+ if (children) {
+ node.x = meanX(children);
+ node.y = maxY(children);
+ } else {
+ node.x = previousNode ? x += separation(node, previousNode) : 0;
+ node.y = 0;
+ previousNode = node;
+ }
+ });
+
+ var left = leafLeft(root),
+ right = leafRight(root),
+ x0 = left.x - separation(left, right) / 2,
+ x1 = right.x + separation(right, left) / 2;
+
+ // Second walk, normalizing x & y to the desired size.
+ return root.eachAfter(nodeSize ? function(node) {
+ node.x = (node.x - root.x) * dx;
+ node.y = (root.y - node.y) * dy;
+ } : function(node) {
+ node.x = (node.x - x0) / (x1 - x0) * dx;
+ node.y = (1 - (root.y ? node.y / root.y : 1)) * dy;
+ });
+ }
+
+ cluster.separation = function(x) {
+ return arguments.length ? (separation = x, cluster) : separation;
+ };
+
+ cluster.size = function(x) {
+ return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? null : [dx, dy]);
+ };
+
+ cluster.nodeSize = function(x) {
+ return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], cluster) : (nodeSize ? [dx, dy] : null);
+ };
+
+ return cluster;
+}
diff --git a/node_modules/d3-hierarchy/src/constant.js b/node_modules/d3-hierarchy/src/constant.js
new file mode 100644
index 00000000..1d947c4f
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/constant.js
@@ -0,0 +1,9 @@
+export function constantZero() {
+ return 0;
+}
+
+export default function(x) {
+ return function() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/ancestors.js b/node_modules/d3-hierarchy/src/hierarchy/ancestors.js
new file mode 100644
index 00000000..f70c7264
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/ancestors.js
@@ -0,0 +1,7 @@
+export default function() {
+ var node = this, nodes = [node];
+ while (node = node.parent) {
+ nodes.push(node);
+ }
+ return nodes;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/count.js b/node_modules/d3-hierarchy/src/hierarchy/count.js
new file mode 100644
index 00000000..0b90f1bd
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/count.js
@@ -0,0 +1,12 @@
+function count(node) {
+ var sum = 0,
+ children = node.children,
+ i = children && children.length;
+ if (!i) sum = 1;
+ else while (--i >= 0) sum += children[i].value;
+ node.value = sum;
+}
+
+export default function() {
+ return this.eachAfter(count);
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/descendants.js b/node_modules/d3-hierarchy/src/hierarchy/descendants.js
new file mode 100644
index 00000000..7f38090d
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/descendants.js
@@ -0,0 +1,3 @@
+export default function() {
+ return Array.from(this);
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/each.js b/node_modules/d3-hierarchy/src/hierarchy/each.js
new file mode 100644
index 00000000..af911cc7
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/each.js
@@ -0,0 +1,7 @@
+export default function(callback, that) {
+ let index = -1;
+ for (const node of this) {
+ callback.call(that, node, ++index, this);
+ }
+ return this;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/eachAfter.js b/node_modules/d3-hierarchy/src/hierarchy/eachAfter.js
new file mode 100644
index 00000000..a3f0a2c0
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/eachAfter.js
@@ -0,0 +1,15 @@
+export default function(callback, that) {
+ var node = this, nodes = [node], next = [], children, i, n, index = -1;
+ while (node = nodes.pop()) {
+ next.push(node);
+ if (children = node.children) {
+ for (i = 0, n = children.length; i < n; ++i) {
+ nodes.push(children[i]);
+ }
+ }
+ }
+ while (node = next.pop()) {
+ callback.call(that, node, ++index, this);
+ }
+ return this;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/eachBefore.js b/node_modules/d3-hierarchy/src/hierarchy/eachBefore.js
new file mode 100644
index 00000000..f3cd524b
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/eachBefore.js
@@ -0,0 +1,12 @@
+export default function(callback, that) {
+ var node = this, nodes = [node], children, i, index = -1;
+ while (node = nodes.pop()) {
+ callback.call(that, node, ++index, this);
+ if (children = node.children) {
+ for (i = children.length - 1; i >= 0; --i) {
+ nodes.push(children[i]);
+ }
+ }
+ }
+ return this;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/find.js b/node_modules/d3-hierarchy/src/hierarchy/find.js
new file mode 100644
index 00000000..f4ed8c68
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/find.js
@@ -0,0 +1,8 @@
+export default function(callback, that) {
+ let index = -1;
+ for (const node of this) {
+ if (callback.call(that, node, ++index, this)) {
+ return node;
+ }
+ }
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/index.js b/node_modules/d3-hierarchy/src/hierarchy/index.js
new file mode 100644
index 00000000..b9c1026f
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/index.js
@@ -0,0 +1,91 @@
+import node_count from "./count.js";
+import node_each from "./each.js";
+import node_eachBefore from "./eachBefore.js";
+import node_eachAfter from "./eachAfter.js";
+import node_find from "./find.js";
+import node_sum from "./sum.js";
+import node_sort from "./sort.js";
+import node_path from "./path.js";
+import node_ancestors from "./ancestors.js";
+import node_descendants from "./descendants.js";
+import node_leaves from "./leaves.js";
+import node_links from "./links.js";
+import node_iterator from "./iterator.js";
+
+export default function hierarchy(data, children) {
+ if (data instanceof Map) {
+ data = [undefined, data];
+ if (children === undefined) children = mapChildren;
+ } else if (children === undefined) {
+ children = objectChildren;
+ }
+
+ var root = new Node(data),
+ node,
+ nodes = [root],
+ child,
+ childs,
+ i,
+ n;
+
+ while (node = nodes.pop()) {
+ if ((childs = children(node.data)) && (n = (childs = Array.from(childs)).length)) {
+ node.children = childs;
+ for (i = n - 1; i >= 0; --i) {
+ nodes.push(child = childs[i] = new Node(childs[i]));
+ child.parent = node;
+ child.depth = node.depth + 1;
+ }
+ }
+ }
+
+ return root.eachBefore(computeHeight);
+}
+
+function node_copy() {
+ return hierarchy(this).eachBefore(copyData);
+}
+
+function objectChildren(d) {
+ return d.children;
+}
+
+function mapChildren(d) {
+ return Array.isArray(d) ? d[1] : null;
+}
+
+function copyData(node) {
+ if (node.data.value !== undefined) node.value = node.data.value;
+ node.data = node.data.data;
+}
+
+export function computeHeight(node) {
+ var height = 0;
+ do node.height = height;
+ while ((node = node.parent) && (node.height < ++height));
+}
+
+export function Node(data) {
+ this.data = data;
+ this.depth =
+ this.height = 0;
+ this.parent = null;
+}
+
+Node.prototype = hierarchy.prototype = {
+ constructor: Node,
+ count: node_count,
+ each: node_each,
+ eachAfter: node_eachAfter,
+ eachBefore: node_eachBefore,
+ find: node_find,
+ sum: node_sum,
+ sort: node_sort,
+ path: node_path,
+ ancestors: node_ancestors,
+ descendants: node_descendants,
+ leaves: node_leaves,
+ links: node_links,
+ copy: node_copy,
+ [Symbol.iterator]: node_iterator
+};
diff --git a/node_modules/d3-hierarchy/src/hierarchy/iterator.js b/node_modules/d3-hierarchy/src/hierarchy/iterator.js
new file mode 100644
index 00000000..7e06b620
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/iterator.js
@@ -0,0 +1,14 @@
+export default function*() {
+ var node = this, current, next = [node], children, i, n;
+ do {
+ current = next.reverse(), next = [];
+ while (node = current.pop()) {
+ yield node;
+ if (children = node.children) {
+ for (i = 0, n = children.length; i < n; ++i) {
+ next.push(children[i]);
+ }
+ }
+ }
+ } while (next.length);
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/leaves.js b/node_modules/d3-hierarchy/src/hierarchy/leaves.js
new file mode 100644
index 00000000..401c5b53
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/leaves.js
@@ -0,0 +1,9 @@
+export default function() {
+ var leaves = [];
+ this.eachBefore(function(node) {
+ if (!node.children) {
+ leaves.push(node);
+ }
+ });
+ return leaves;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/links.js b/node_modules/d3-hierarchy/src/hierarchy/links.js
new file mode 100644
index 00000000..6fcb82fa
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/links.js
@@ -0,0 +1,9 @@
+export default function() {
+ var root = this, links = [];
+ root.each(function(node) {
+ if (node !== root) { // Don’t include the root’s parent, if any.
+ links.push({source: node.parent, target: node});
+ }
+ });
+ return links;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/path.js b/node_modules/d3-hierarchy/src/hierarchy/path.js
new file mode 100644
index 00000000..99589138
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/path.js
@@ -0,0 +1,30 @@
+export default function(end) {
+ var start = this,
+ ancestor = leastCommonAncestor(start, end),
+ nodes = [start];
+ while (start !== ancestor) {
+ start = start.parent;
+ nodes.push(start);
+ }
+ var k = nodes.length;
+ while (end !== ancestor) {
+ nodes.splice(k, 0, end);
+ end = end.parent;
+ }
+ return nodes;
+}
+
+function leastCommonAncestor(a, b) {
+ if (a === b) return a;
+ var aNodes = a.ancestors(),
+ bNodes = b.ancestors(),
+ c = null;
+ a = aNodes.pop();
+ b = bNodes.pop();
+ while (a === b) {
+ c = a;
+ a = aNodes.pop();
+ b = bNodes.pop();
+ }
+ return c;
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/sort.js b/node_modules/d3-hierarchy/src/hierarchy/sort.js
new file mode 100644
index 00000000..5d0426d5
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/sort.js
@@ -0,0 +1,7 @@
+export default function(compare) {
+ return this.eachBefore(function(node) {
+ if (node.children) {
+ node.children.sort(compare);
+ }
+ });
+}
diff --git a/node_modules/d3-hierarchy/src/hierarchy/sum.js b/node_modules/d3-hierarchy/src/hierarchy/sum.js
new file mode 100644
index 00000000..350a965e
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/hierarchy/sum.js
@@ -0,0 +1,9 @@
+export default function(value) {
+ return this.eachAfter(function(node) {
+ var sum = +value(node.data) || 0,
+ children = node.children,
+ i = children && children.length;
+ while (--i >= 0) sum += children[i].value;
+ node.value = sum;
+ });
+}
diff --git a/node_modules/d3-hierarchy/src/index.js b/node_modules/d3-hierarchy/src/index.js
new file mode 100644
index 00000000..e5952b18
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/index.js
@@ -0,0 +1,15 @@
+export {default as cluster} from "./cluster.js";
+export {default as hierarchy, Node} from "./hierarchy/index.js";
+export {default as pack} from "./pack/index.js";
+export {default as packSiblings} from "./pack/siblings.js";
+export {default as packEnclose} from "./pack/enclose.js";
+export {default as partition} from "./partition.js";
+export {default as stratify} from "./stratify.js";
+export {default as tree} from "./tree.js";
+export {default as treemap} from "./treemap/index.js";
+export {default as treemapBinary} from "./treemap/binary.js";
+export {default as treemapDice} from "./treemap/dice.js";
+export {default as treemapSlice} from "./treemap/slice.js";
+export {default as treemapSliceDice} from "./treemap/sliceDice.js";
+export {default as treemapSquarify} from "./treemap/squarify.js";
+export {default as treemapResquarify} from "./treemap/resquarify.js";
diff --git a/node_modules/d3-hierarchy/src/lcg.js b/node_modules/d3-hierarchy/src/lcg.js
new file mode 100644
index 00000000..a13cf79e
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/lcg.js
@@ -0,0 +1,9 @@
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const a = 1664525;
+const c = 1013904223;
+const m = 4294967296; // 2^32
+
+export default function() {
+ let s = 1;
+ return () => (s = (a * s + c) % m) / m;
+}
diff --git a/node_modules/d3-hierarchy/src/pack/enclose.js b/node_modules/d3-hierarchy/src/pack/enclose.js
new file mode 100644
index 00000000..f6eb67f1
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/pack/enclose.js
@@ -0,0 +1,123 @@
+import {shuffle} from "../array.js";
+import lcg from "../lcg.js";
+
+export default function(circles) {
+ return packEncloseRandom(circles, lcg());
+}
+
+export function packEncloseRandom(circles, random) {
+ var i = 0, n = (circles = shuffle(Array.from(circles), random)).length, B = [], p, e;
+
+ while (i < n) {
+ p = circles[i];
+ if (e && enclosesWeak(e, p)) ++i;
+ else e = encloseBasis(B = extendBasis(B, p)), i = 0;
+ }
+
+ return e;
+}
+
+function extendBasis(B, p) {
+ var i, j;
+
+ if (enclosesWeakAll(p, B)) return [p];
+
+ // If we get here then B must have at least one element.
+ for (i = 0; i < B.length; ++i) {
+ if (enclosesNot(p, B[i])
+ && enclosesWeakAll(encloseBasis2(B[i], p), B)) {
+ return [B[i], p];
+ }
+ }
+
+ // If we get here then B must have at least two elements.
+ for (i = 0; i < B.length - 1; ++i) {
+ for (j = i + 1; j < B.length; ++j) {
+ if (enclosesNot(encloseBasis2(B[i], B[j]), p)
+ && enclosesNot(encloseBasis2(B[i], p), B[j])
+ && enclosesNot(encloseBasis2(B[j], p), B[i])
+ && enclosesWeakAll(encloseBasis3(B[i], B[j], p), B)) {
+ return [B[i], B[j], p];
+ }
+ }
+ }
+
+ // If we get here then something is very wrong.
+ throw new Error;
+}
+
+function enclosesNot(a, b) {
+ var dr = a.r - b.r, dx = b.x - a.x, dy = b.y - a.y;
+ return dr < 0 || dr * dr < dx * dx + dy * dy;
+}
+
+function enclosesWeak(a, b) {
+ var dr = a.r - b.r + Math.max(a.r, b.r, 1) * 1e-9, dx = b.x - a.x, dy = b.y - a.y;
+ return dr > 0 && dr * dr > dx * dx + dy * dy;
+}
+
+function enclosesWeakAll(a, B) {
+ for (var i = 0; i < B.length; ++i) {
+ if (!enclosesWeak(a, B[i])) {
+ return false;
+ }
+ }
+ return true;
+}
+
+function encloseBasis(B) {
+ switch (B.length) {
+ case 1: return encloseBasis1(B[0]);
+ case 2: return encloseBasis2(B[0], B[1]);
+ case 3: return encloseBasis3(B[0], B[1], B[2]);
+ }
+}
+
+function encloseBasis1(a) {
+ return {
+ x: a.x,
+ y: a.y,
+ r: a.r
+ };
+}
+
+function encloseBasis2(a, b) {
+ var x1 = a.x, y1 = a.y, r1 = a.r,
+ x2 = b.x, y2 = b.y, r2 = b.r,
+ x21 = x2 - x1, y21 = y2 - y1, r21 = r2 - r1,
+ l = Math.sqrt(x21 * x21 + y21 * y21);
+ return {
+ x: (x1 + x2 + x21 / l * r21) / 2,
+ y: (y1 + y2 + y21 / l * r21) / 2,
+ r: (l + r1 + r2) / 2
+ };
+}
+
+function encloseBasis3(a, b, c) {
+ var x1 = a.x, y1 = a.y, r1 = a.r,
+ x2 = b.x, y2 = b.y, r2 = b.r,
+ x3 = c.x, y3 = c.y, r3 = c.r,
+ a2 = x1 - x2,
+ a3 = x1 - x3,
+ b2 = y1 - y2,
+ b3 = y1 - y3,
+ c2 = r2 - r1,
+ c3 = r3 - r1,
+ d1 = x1 * x1 + y1 * y1 - r1 * r1,
+ d2 = d1 - x2 * x2 - y2 * y2 + r2 * r2,
+ d3 = d1 - x3 * x3 - y3 * y3 + r3 * r3,
+ ab = a3 * b2 - a2 * b3,
+ xa = (b2 * d3 - b3 * d2) / (ab * 2) - x1,
+ xb = (b3 * c2 - b2 * c3) / ab,
+ ya = (a3 * d2 - a2 * d3) / (ab * 2) - y1,
+ yb = (a2 * c3 - a3 * c2) / ab,
+ A = xb * xb + yb * yb - 1,
+ B = 2 * (r1 + xa * xb + ya * yb),
+ C = xa * xa + ya * ya - r1 * r1,
+ r = -(Math.abs(A) > 1e-6 ? (B + Math.sqrt(B * B - 4 * A * C)) / (2 * A) : C / B);
+ return {
+ x: x1 + xa + xb * r,
+ y: y1 + ya + yb * r,
+ r: r
+ };
+}
diff --git a/node_modules/d3-hierarchy/src/pack/index.js b/node_modules/d3-hierarchy/src/pack/index.js
new file mode 100644
index 00000000..8b710b3f
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/pack/index.js
@@ -0,0 +1,81 @@
+import {optional} from "../accessors.js";
+import constant, {constantZero} from "../constant.js";
+import lcg from "../lcg.js";
+import {packSiblingsRandom} from "./siblings.js";
+
+function defaultRadius(d) {
+ return Math.sqrt(d.value);
+}
+
+export default function() {
+ var radius = null,
+ dx = 1,
+ dy = 1,
+ padding = constantZero;
+
+ function pack(root) {
+ const random = lcg();
+ root.x = dx / 2, root.y = dy / 2;
+ if (radius) {
+ root.eachBefore(radiusLeaf(radius))
+ .eachAfter(packChildrenRandom(padding, 0.5, random))
+ .eachBefore(translateChild(1));
+ } else {
+ root.eachBefore(radiusLeaf(defaultRadius))
+ .eachAfter(packChildrenRandom(constantZero, 1, random))
+ .eachAfter(packChildrenRandom(padding, root.r / Math.min(dx, dy), random))
+ .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r)));
+ }
+ return root;
+ }
+
+ pack.radius = function(x) {
+ return arguments.length ? (radius = optional(x), pack) : radius;
+ };
+
+ pack.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], pack) : [dx, dy];
+ };
+
+ pack.padding = function(x) {
+ return arguments.length ? (padding = typeof x === "function" ? x : constant(+x), pack) : padding;
+ };
+
+ return pack;
+}
+
+function radiusLeaf(radius) {
+ return function(node) {
+ if (!node.children) {
+ node.r = Math.max(0, +radius(node) || 0);
+ }
+ };
+}
+
+function packChildrenRandom(padding, k, random) {
+ return function(node) {
+ if (children = node.children) {
+ var children,
+ i,
+ n = children.length,
+ r = padding(node) * k || 0,
+ e;
+
+ if (r) for (i = 0; i < n; ++i) children[i].r += r;
+ e = packSiblingsRandom(children, random);
+ if (r) for (i = 0; i < n; ++i) children[i].r -= r;
+ node.r = e + r;
+ }
+ };
+}
+
+function translateChild(k) {
+ return function(node) {
+ var parent = node.parent;
+ node.r *= k;
+ if (parent) {
+ node.x = parent.x + k * node.x;
+ node.y = parent.y + k * node.y;
+ }
+ };
+}
diff --git a/node_modules/d3-hierarchy/src/pack/siblings.js b/node_modules/d3-hierarchy/src/pack/siblings.js
new file mode 100644
index 00000000..e7f5df46
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/pack/siblings.js
@@ -0,0 +1,120 @@
+import array from "../array.js";
+import lcg from "../lcg.js";
+import {packEncloseRandom} from "./enclose.js";
+
+function place(b, a, c) {
+ var dx = b.x - a.x, x, a2,
+ dy = b.y - a.y, y, b2,
+ d2 = dx * dx + dy * dy;
+ if (d2) {
+ a2 = a.r + c.r, a2 *= a2;
+ b2 = b.r + c.r, b2 *= b2;
+ if (a2 > b2) {
+ x = (d2 + b2 - a2) / (2 * d2);
+ y = Math.sqrt(Math.max(0, b2 / d2 - x * x));
+ c.x = b.x - x * dx - y * dy;
+ c.y = b.y - x * dy + y * dx;
+ } else {
+ x = (d2 + a2 - b2) / (2 * d2);
+ y = Math.sqrt(Math.max(0, a2 / d2 - x * x));
+ c.x = a.x + x * dx - y * dy;
+ c.y = a.y + x * dy + y * dx;
+ }
+ } else {
+ c.x = a.x + c.r;
+ c.y = a.y;
+ }
+}
+
+function intersects(a, b) {
+ var dr = a.r + b.r - 1e-6, dx = b.x - a.x, dy = b.y - a.y;
+ return dr > 0 && dr * dr > dx * dx + dy * dy;
+}
+
+function score(node) {
+ var a = node._,
+ b = node.next._,
+ ab = a.r + b.r,
+ dx = (a.x * b.r + b.x * a.r) / ab,
+ dy = (a.y * b.r + b.y * a.r) / ab;
+ return dx * dx + dy * dy;
+}
+
+function Node(circle) {
+ this._ = circle;
+ this.next = null;
+ this.previous = null;
+}
+
+export function packSiblingsRandom(circles, random) {
+ if (!(n = (circles = array(circles)).length)) return 0;
+
+ var a, b, c, n, aa, ca, i, j, k, sj, sk;
+
+ // Place the first circle.
+ a = circles[0], a.x = 0, a.y = 0;
+ if (!(n > 1)) return a.r;
+
+ // Place the second circle.
+ b = circles[1], a.x = -b.r, b.x = a.r, b.y = 0;
+ if (!(n > 2)) return a.r + b.r;
+
+ // Place the third circle.
+ place(b, a, c = circles[2]);
+
+ // Initialize the front-chain using the first three circles a, b and c.
+ a = new Node(a), b = new Node(b), c = new Node(c);
+ a.next = c.previous = b;
+ b.next = a.previous = c;
+ c.next = b.previous = a;
+
+ // Attempt to place each remaining circle…
+ pack: for (i = 3; i < n; ++i) {
+ place(a._, b._, c = circles[i]), c = new Node(c);
+
+ // Find the closest intersecting circle on the front-chain, if any.
+ // “Closeness” is determined by linear distance along the front-chain.
+ // “Ahead” or “behind” is likewise determined by linear distance.
+ j = b.next, k = a.previous, sj = b._.r, sk = a._.r;
+ do {
+ if (sj <= sk) {
+ if (intersects(j._, c._)) {
+ b = j, a.next = b, b.previous = a, --i;
+ continue pack;
+ }
+ sj += j._.r, j = j.next;
+ } else {
+ if (intersects(k._, c._)) {
+ a = k, a.next = b, b.previous = a, --i;
+ continue pack;
+ }
+ sk += k._.r, k = k.previous;
+ }
+ } while (j !== k.next);
+
+ // Success! Insert the new circle c between a and b.
+ c.previous = a, c.next = b, a.next = b.previous = b = c;
+
+ // Compute the new closest circle pair to the centroid.
+ aa = score(a);
+ while ((c = c.next) !== b) {
+ if ((ca = score(c)) < aa) {
+ a = c, aa = ca;
+ }
+ }
+ b = a.next;
+ }
+
+ // Compute the enclosing circle of the front chain.
+ a = [b._], c = b; while ((c = c.next) !== b) a.push(c._); c = packEncloseRandom(a, random);
+
+ // Translate the circles to put the enclosing circle around the origin.
+ for (i = 0; i < n; ++i) a = circles[i], a.x -= c.x, a.y -= c.y;
+
+ return c.r;
+}
+
+export default function(circles) {
+ packSiblingsRandom(circles, lcg());
+ return circles;
+}
diff --git a/node_modules/d3-hierarchy/src/partition.js b/node_modules/d3-hierarchy/src/partition.js
new file mode 100644
index 00000000..0165ef73
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/partition.js
@@ -0,0 +1,52 @@
+import roundNode from "./treemap/round.js";
+import treemapDice from "./treemap/dice.js";
+
+export default function() {
+ var dx = 1,
+ dy = 1,
+ padding = 0,
+ round = false;
+
+ function partition(root) {
+ var n = root.height + 1;
+ root.x0 =
+ root.y0 = padding;
+ root.x1 = dx;
+ root.y1 = dy / n;
+ root.eachBefore(positionNode(dy, n));
+ if (round) root.eachBefore(roundNode);
+ return root;
+ }
+
+ function positionNode(dy, n) {
+ return function(node) {
+ if (node.children) {
+ treemapDice(node, node.x0, dy * (node.depth + 1) / n, node.x1, dy * (node.depth + 2) / n);
+ }
+ var x0 = node.x0,
+ y0 = node.y0,
+ x1 = node.x1 - padding,
+ y1 = node.y1 - padding;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ node.x0 = x0;
+ node.y0 = y0;
+ node.x1 = x1;
+ node.y1 = y1;
+ };
+ }
+
+ partition.round = function(x) {
+ return arguments.length ? (round = !!x, partition) : round;
+ };
+
+ partition.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], partition) : [dx, dy];
+ };
+
+ partition.padding = function(x) {
+ return arguments.length ? (padding = +x, partition) : padding;
+ };
+
+ return partition;
+}
diff --git a/node_modules/d3-hierarchy/src/stratify.js b/node_modules/d3-hierarchy/src/stratify.js
new file mode 100644
index 00000000..d113100d
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/stratify.js
@@ -0,0 +1,145 @@
+import {optional} from "./accessors.js";
+import {Node, computeHeight} from "./hierarchy/index.js";
+
+var preroot = {depth: -1},
+ ambiguous = {},
+ imputed = {};
+
+function defaultId(d) {
+ return d.id;
+}
+
+function defaultParentId(d) {
+ return d.parentId;
+}
+
+export default function() {
+ var id = defaultId,
+ parentId = defaultParentId,
+ path;
+
+ function stratify(data) {
+ var nodes = Array.from(data),
+ currentId = id,
+ currentParentId = parentId,
+ n,
+ d,
+ i,
+ root,
+ parent,
+ node,
+ nodeId,
+ nodeKey,
+ nodeByKey = new Map;
+
+ if (path != null) {
+ const I = nodes.map((d, i) => normalize(path(d, i, data)));
+ const P = I.map(parentof);
+ const S = new Set(I).add("");
+ for (const i of P) {
+ if (!S.has(i)) {
+ S.add(i);
+ I.push(i);
+ P.push(parentof(i));
+ nodes.push(imputed);
+ }
+ }
+ currentId = (_, i) => I[i];
+ currentParentId = (_, i) => P[i];
+ }
+
+ for (i = 0, n = nodes.length; i < n; ++i) {
+ d = nodes[i], node = nodes[i] = new Node(d);
+ if ((nodeId = currentId(d, i, data)) != null && (nodeId += "")) {
+ nodeKey = node.id = nodeId;
+ nodeByKey.set(nodeKey, nodeByKey.has(nodeKey) ? ambiguous : node);
+ }
+ if ((nodeId = currentParentId(d, i, data)) != null && (nodeId += "")) {
+ node.parent = nodeId;
+ }
+ }
+
+ for (i = 0; i < n; ++i) {
+ node = nodes[i];
+ if (nodeId = node.parent) {
+ parent = nodeByKey.get(nodeId);
+ if (!parent) throw new Error("missing: " + nodeId);
+ if (parent === ambiguous) throw new Error("ambiguous: " + nodeId);
+ if (parent.children) parent.children.push(node);
+ else parent.children = [node];
+ node.parent = parent;
+ } else {
+ if (root) throw new Error("multiple roots");
+ root = node;
+ }
+ }
+
+ if (!root) throw new Error("no root");
+
+ // When imputing internal nodes, only introduce roots if needed.
+ // Then replace the imputed marker data with null.
+ if (path != null) {
+ while (root.data === imputed && root.children.length === 1) {
+ root = root.children[0], --n;
+ }
+ for (let i = nodes.length - 1; i >= 0; --i) {
+ node = nodes[i];
+ if (node.data !== imputed) break;
+ node.data = null;
+ }
+ }
+
+ root.parent = preroot;
+ root.eachBefore(function(node) { node.depth = node.parent.depth + 1; --n; }).eachBefore(computeHeight);
+ root.parent = null;
+ if (n > 0) throw new Error("cycle");
+
+ return root;
+ }
+
+ stratify.id = function(x) {
+ return arguments.length ? (id = optional(x), stratify) : id;
+ };
+
+ stratify.parentId = function(x) {
+ return arguments.length ? (parentId = optional(x), stratify) : parentId;
+ };
+
+ stratify.path = function(x) {
+ return arguments.length ? (path = optional(x), stratify) : path;
+ };
+
+ return stratify;
+}
+
+// To normalize a path, we coerce to a string, strip the trailing slash if any
+// (as long as the trailing slash is not immediately preceded by another slash),
+// and add leading slash if missing.
+function normalize(path) {
+ path = `${path}`;
+ let i = path.length;
+ if (slash(path, i - 1) && !slash(path, i - 2)) path = path.slice(0, -1);
+ return path[0] === "/" ? path : `/${path}`;
+}
+
+// Walk backwards to find the first slash that is not the leading slash, e.g.:
+// "/foo/bar" ⇥ "/foo", "/foo" ⇥ "/", "/" ↦ "". (The root is special-cased
+// because the id of the root must be a truthy value.)
+function parentof(path) {
+ let i = path.length;
+ if (i < 2) return "";
+ while (--i > 1) if (slash(path, i)) break;
+ return path.slice(0, i);
+}
+
+// Slashes can be escaped; to determine whether a slash is a path delimiter, we
+// count the number of preceding backslashes escaping the forward slash: an odd
+// number indicates an escaped forward slash.
+function slash(path, i) {
+ if (path[i] === "/") {
+ let k = 0;
+ while (i > 0 && path[--i] === "\\") ++k;
+ if ((k & 1) === 0) return true;
+ }
+ return false;
+}
diff --git a/node_modules/d3-hierarchy/src/tree.js b/node_modules/d3-hierarchy/src/tree.js
new file mode 100644
index 00000000..dc4275e4
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/tree.js
@@ -0,0 +1,237 @@
+import {Node} from "./hierarchy/index.js";
+
+function defaultSeparation(a, b) {
+ return a.parent === b.parent ? 1 : 2;
+}
+
+// function radialSeparation(a, b) {
+// return (a.parent === b.parent ? 1 : 2) / a.depth;
+// }
+
+// This function is used to traverse the left contour of a subtree (or
+// subforest). It returns the successor of v on this contour. This successor is
+// either given by the leftmost child of v or by the thread of v. The function
+// returns null if and only if v is on the highest level of its subtree.
+function nextLeft(v) {
+ var children = v.children;
+ return children ? children[0] : v.t;
+}
+
+// This function works analogously to nextLeft.
+function nextRight(v) {
+ var children = v.children;
+ return children ? children[children.length - 1] : v.t;
+}
+
+// Shifts the current subtree rooted at w+. This is done by increasing
+// prelim(w+) and mod(w+) by shift.
+function moveSubtree(wm, wp, shift) {
+ var change = shift / (wp.i - wm.i);
+ wp.c -= change;
+ wp.s += shift;
+ wm.c += change;
+ wp.z += shift;
+ wp.m += shift;
+}
+
+// All other shifts, applied to the smaller subtrees between w- and w+, are
+// performed by this function. To prepare the shifts, we have to adjust
+// change(w+), shift(w+), and change(w-).
+function executeShifts(v) {
+ var shift = 0,
+ change = 0,
+ children = v.children,
+ i = children.length,
+ w;
+ while (--i >= 0) {
+ w = children[i];
+ w.z += shift;
+ w.m += shift;
+ shift += w.s + (change += w.c);
+ }
+}
+
+// If vi-’s ancestor is a sibling of v, returns vi-’s ancestor. Otherwise,
+// returns the specified (default) ancestor.
+function nextAncestor(vim, v, ancestor) {
+ return vim.a.parent === v.parent ? vim.a : ancestor;
+}
+
+function TreeNode(node, i) {
+ this._ = node;
+ this.parent = null;
+ this.children = null;
+ this.A = null; // default ancestor
+ this.a = this; // ancestor
+ this.z = 0; // prelim
+ this.m = 0; // mod
+ this.c = 0; // change
+ this.s = 0; // shift
+ this.t = null; // thread
+ this.i = i; // number
+}
+
+TreeNode.prototype = Object.create(Node.prototype);
+
+function treeRoot(root) {
+ var tree = new TreeNode(root, 0),
+ node,
+ nodes = [tree],
+ child,
+ children,
+ i,
+ n;
+
+ while (node = nodes.pop()) {
+ if (children = node._.children) {
+ node.children = new Array(n = children.length);
+ for (i = n - 1; i >= 0; --i) {
+ nodes.push(child = node.children[i] = new TreeNode(children[i], i));
+ child.parent = node;
+ }
+ }
+ }
+
+ (tree.parent = new TreeNode(null, 0)).children = [tree];
+ return tree;
+}
+
+// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
+export default function() {
+ var separation = defaultSeparation,
+ dx = 1,
+ dy = 1,
+ nodeSize = null;
+
+ function tree(root) {
+ var t = treeRoot(root);
+
+ // Compute the layout using Buchheim et al.’s algorithm.
+ t.eachAfter(firstWalk), t.parent.m = -t.z;
+ t.eachBefore(secondWalk);
+
+ // If a fixed node size is specified, scale x and y.
+ if (nodeSize) root.eachBefore(sizeNode);
+
+ // If a fixed tree size is specified, scale x and y based on the extent.
+ // Compute the left-most, right-most, and depth-most nodes for extents.
+ else {
+ var left = root,
+ right = root,
+ bottom = root;
+ root.eachBefore(function(node) {
+ if (node.x < left.x) left = node;
+ if (node.x > right.x) right = node;
+ if (node.depth > bottom.depth) bottom = node;
+ });
+ var s = left === right ? 1 : separation(left, right) / 2,
+ tx = s - left.x,
+ kx = dx / (right.x + s + tx),
+ ky = dy / (bottom.depth || 1);
+ root.eachBefore(function(node) {
+ node.x = (node.x + tx) * kx;
+ node.y = node.depth * ky;
+ });
+ }
+
+ return root;
+ }
+
+ // Computes a preliminary x-coordinate for v. Before that, FIRST WALK is
+ // applied recursively to the children of v, as well as the function
+ // APPORTION. After spacing out the children by calling EXECUTE SHIFTS, the
+ // node v is placed to the midpoint of its outermost children.
+ function firstWalk(v) {
+ var children = v.children,
+ siblings = v.parent.children,
+ w = v.i ? siblings[v.i - 1] : null;
+ if (children) {
+ executeShifts(v);
+ var midpoint = (children[0].z + children[children.length - 1].z) / 2;
+ if (w) {
+ v.z = w.z + separation(v._, w._);
+ v.m = v.z - midpoint;
+ } else {
+ v.z = midpoint;
+ }
+ } else if (w) {
+ v.z = w.z + separation(v._, w._);
+ }
+ v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
+ }
+
+ // Computes all real x-coordinates by summing up the modifiers recursively.
+ function secondWalk(v) {
+ v._.x = v.z + v.parent.m;
+ v.m += v.parent.m;
+ }
+
+ // The core of the algorithm. Here, a new subtree is combined with the
+ // previous subtrees. Threads are used to traverse the inside and outside
+ // contours of the left and right subtree up to the highest common level. The
+ // vertices used for the traversals are vi+, vi-, vo-, and vo+, where the
+ // superscript o means outside and i means inside, the subscript - means left
+ // subtree and + means right subtree. For summing up the modifiers along the
+ // contour, we use respective variables si+, si-, so-, and so+. Whenever two
+ // nodes of the inside contours conflict, we compute the left one of the
+ // greatest uncommon ancestors using the function ANCESTOR and call MOVE
+ // SUBTREE to shift the subtree and prepare the shifts of smaller subtrees.
+ // Finally, we add a new thread (if necessary).
+ function apportion(v, w, ancestor) {
+ if (w) {
+ var vip = v,
+ vop = v,
+ vim = w,
+ vom = vip.parent.children[0],
+ sip = vip.m,
+ sop = vop.m,
+ sim = vim.m,
+ som = vom.m,
+ shift;
+ while (vim = nextRight(vim), vip = nextLeft(vip), vim && vip) {
+ vom = nextLeft(vom);
+ vop = nextRight(vop);
+ vop.a = v;
+ shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
+ if (shift > 0) {
+ moveSubtree(nextAncestor(vim, v, ancestor), v, shift);
+ sip += shift;
+ sop += shift;
+ }
+ sim += vim.m;
+ sip += vip.m;
+ som += vom.m;
+ sop += vop.m;
+ }
+ if (vim && !nextRight(vop)) {
+ vop.t = vim;
+ vop.m += sim - sop;
+ }
+ if (vip && !nextLeft(vom)) {
+ vom.t = vip;
+ vom.m += sip - som;
+ ancestor = v;
+ }
+ }
+ return ancestor;
+ }
+
+ function sizeNode(node) {
+ node.x *= dx;
+ node.y = node.depth * dy;
+ }
+
+ tree.separation = function(x) {
+ return arguments.length ? (separation = x, tree) : separation;
+ };
+
+ tree.size = function(x) {
+ return arguments.length ? (nodeSize = false, dx = +x[0], dy = +x[1], tree) : (nodeSize ? null : [dx, dy]);
+ };
+
+ tree.nodeSize = function(x) {
+ return arguments.length ? (nodeSize = true, dx = +x[0], dy = +x[1], tree) : (nodeSize ? [dx, dy] : null);
+ };
+
+ return tree;
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/binary.js b/node_modules/d3-hierarchy/src/treemap/binary.js
new file mode 100644
index 00000000..a9395dc2
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/binary.js
@@ -0,0 +1,46 @@
+export default function(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ i, n = nodes.length,
+ sum, sums = new Array(n + 1);
+
+ for (sums[0] = sum = i = 0; i < n; ++i) {
+ sums[i + 1] = sum += nodes[i].value;
+ }
+
+ partition(0, n, parent.value, x0, y0, x1, y1);
+
+ function partition(i, j, value, x0, y0, x1, y1) {
+ if (i >= j - 1) {
+ var node = nodes[i];
+ node.x0 = x0, node.y0 = y0;
+ node.x1 = x1, node.y1 = y1;
+ return;
+ }
+
+ var valueOffset = sums[i],
+ valueTarget = (value / 2) + valueOffset,
+ k = i + 1,
+ hi = j - 1;
+
+ while (k < hi) {
+ var mid = k + hi >>> 1;
+ if (sums[mid] < valueTarget) k = mid + 1;
+ else hi = mid;
+ }
+
+ if ((valueTarget - sums[k - 1]) < (sums[k] - valueTarget) && i + 1 < k) --k;
+
+ var valueLeft = sums[k] - valueOffset,
+ valueRight = value - valueLeft;
+
+ if ((x1 - x0) > (y1 - y0)) {
+ var xk = value ? (x0 * valueRight + x1 * valueLeft) / value : x1;
+ partition(i, k, valueLeft, x0, y0, xk, y1);
+ partition(k, j, valueRight, xk, y0, x1, y1);
+ } else {
+ var yk = value ? (y0 * valueRight + y1 * valueLeft) / value : y1;
+ partition(i, k, valueLeft, x0, y0, x1, yk);
+ partition(k, j, valueRight, x0, yk, x1, y1);
+ }
+ }
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/dice.js b/node_modules/d3-hierarchy/src/treemap/dice.js
new file mode 100644
index 00000000..605c1f66
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/dice.js
@@ -0,0 +1,12 @@
+export default function(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ node,
+ i = -1,
+ n = nodes.length,
+ k = parent.value && (x1 - x0) / parent.value;
+
+ while (++i < n) {
+ node = nodes[i], node.y0 = y0, node.y1 = y1;
+ node.x0 = x0, node.x1 = x0 += node.value * k;
+ }
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/index.js b/node_modules/d3-hierarchy/src/treemap/index.js
new file mode 100644
index 00000000..ccc42c9d
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/index.js
@@ -0,0 +1,94 @@
+import roundNode from "./round.js";
+import squarify from "./squarify.js";
+import {required} from "../accessors.js";
+import constant, {constantZero} from "../constant.js";
+
+export default function() {
+ var tile = squarify,
+ round = false,
+ dx = 1,
+ dy = 1,
+ paddingStack = [0],
+ paddingInner = constantZero,
+ paddingTop = constantZero,
+ paddingRight = constantZero,
+ paddingBottom = constantZero,
+ paddingLeft = constantZero;
+
+ function treemap(root) {
+ root.x0 =
+ root.y0 = 0;
+ root.x1 = dx;
+ root.y1 = dy;
+ root.eachBefore(positionNode);
+ paddingStack = [0];
+ if (round) root.eachBefore(roundNode);
+ return root;
+ }
+
+ function positionNode(node) {
+ var p = paddingStack[node.depth],
+ x0 = node.x0 + p,
+ y0 = node.y0 + p,
+ x1 = node.x1 - p,
+ y1 = node.y1 - p;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ node.x0 = x0;
+ node.y0 = y0;
+ node.x1 = x1;
+ node.y1 = y1;
+ if (node.children) {
+ p = paddingStack[node.depth + 1] = paddingInner(node) / 2;
+ x0 += paddingLeft(node) - p;
+ y0 += paddingTop(node) - p;
+ x1 -= paddingRight(node) - p;
+ y1 -= paddingBottom(node) - p;
+ if (x1 < x0) x0 = x1 = (x0 + x1) / 2;
+ if (y1 < y0) y0 = y1 = (y0 + y1) / 2;
+ tile(node, x0, y0, x1, y1);
+ }
+ }
+
+ treemap.round = function(x) {
+ return arguments.length ? (round = !!x, treemap) : round;
+ };
+
+ treemap.size = function(x) {
+ return arguments.length ? (dx = +x[0], dy = +x[1], treemap) : [dx, dy];
+ };
+
+ treemap.tile = function(x) {
+ return arguments.length ? (tile = required(x), treemap) : tile;
+ };
+
+ treemap.padding = function(x) {
+ return arguments.length ? treemap.paddingInner(x).paddingOuter(x) : treemap.paddingInner();
+ };
+
+ treemap.paddingInner = function(x) {
+ return arguments.length ? (paddingInner = typeof x === "function" ? x : constant(+x), treemap) : paddingInner;
+ };
+
+ treemap.paddingOuter = function(x) {
+ return arguments.length ? treemap.paddingTop(x).paddingRight(x).paddingBottom(x).paddingLeft(x) : treemap.paddingTop();
+ };
+
+ treemap.paddingTop = function(x) {
+ return arguments.length ? (paddingTop = typeof x === "function" ? x : constant(+x), treemap) : paddingTop;
+ };
+
+ treemap.paddingRight = function(x) {
+ return arguments.length ? (paddingRight = typeof x === "function" ? x : constant(+x), treemap) : paddingRight;
+ };
+
+ treemap.paddingBottom = function(x) {
+ return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant(+x), treemap) : paddingBottom;
+ };
+
+ treemap.paddingLeft = function(x) {
+ return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant(+x), treemap) : paddingLeft;
+ };
+
+ return treemap;
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/resquarify.js b/node_modules/d3-hierarchy/src/treemap/resquarify.js
new file mode 100644
index 00000000..de720473
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/resquarify.js
@@ -0,0 +1,36 @@
+import treemapDice from "./dice.js";
+import treemapSlice from "./slice.js";
+import {phi, squarifyRatio} from "./squarify.js";
+
+export default (function custom(ratio) {
+
+ function resquarify(parent, x0, y0, x1, y1) {
+ if ((rows = parent._squarify) && (rows.ratio === ratio)) {
+ var rows,
+ row,
+ nodes,
+ i,
+ j = -1,
+ n,
+ m = rows.length,
+ value = parent.value;
+
+ while (++j < m) {
+ row = rows[j], nodes = row.children;
+ for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value;
+ if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1);
+ else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1);
+ value -= row.value;
+ }
+ } else {
+ parent._squarify = rows = squarifyRatio(ratio, parent, x0, y0, x1, y1);
+ rows.ratio = ratio;
+ }
+ }
+
+ resquarify.ratio = function(x) {
+ return custom((x = +x) > 1 ? x : 1);
+ };
+
+ return resquarify;
+})(phi);
diff --git a/node_modules/d3-hierarchy/src/treemap/round.js b/node_modules/d3-hierarchy/src/treemap/round.js
new file mode 100644
index 00000000..7ac45ec2
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/round.js
@@ -0,0 +1,6 @@
+export default function(node) {
+ node.x0 = Math.round(node.x0);
+ node.y0 = Math.round(node.y0);
+ node.x1 = Math.round(node.x1);
+ node.y1 = Math.round(node.y1);
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/slice.js b/node_modules/d3-hierarchy/src/treemap/slice.js
new file mode 100644
index 00000000..1022bfad
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/slice.js
@@ -0,0 +1,12 @@
+export default function(parent, x0, y0, x1, y1) {
+ var nodes = parent.children,
+ node,
+ i = -1,
+ n = nodes.length,
+ k = parent.value && (y1 - y0) / parent.value;
+
+ while (++i < n) {
+ node = nodes[i], node.x0 = x0, node.x1 = x1;
+ node.y0 = y0, node.y1 = y0 += node.value * k;
+ }
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/sliceDice.js b/node_modules/d3-hierarchy/src/treemap/sliceDice.js
new file mode 100644
index 00000000..545ad42b
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/sliceDice.js
@@ -0,0 +1,6 @@
+import dice from "./dice.js";
+import slice from "./slice.js";
+
+export default function(parent, x0, y0, x1, y1) {
+ (parent.depth & 1 ? slice : dice)(parent, x0, y0, x1, y1);
+}
diff --git a/node_modules/d3-hierarchy/src/treemap/squarify.js b/node_modules/d3-hierarchy/src/treemap/squarify.js
new file mode 100644
index 00000000..f8010703
--- /dev/null
+++ b/node_modules/d3-hierarchy/src/treemap/squarify.js
@@ -0,0 +1,66 @@
+import treemapDice from "./dice.js";
+import treemapSlice from "./slice.js";
+
+export var phi = (1 + Math.sqrt(5)) / 2;
+
+export function squarifyRatio(ratio, parent, x0, y0, x1, y1) {
+ var rows = [],
+ nodes = parent.children,
+ row,
+ nodeValue,
+ i0 = 0,
+ i1 = 0,
+ n = nodes.length,
+ dx, dy,
+ value = parent.value,
+ sumValue,
+ minValue,
+ maxValue,
+ newRatio,
+ minRatio,
+ alpha,
+ beta;
+
+ while (i0 < n) {
+ dx = x1 - x0, dy = y1 - y0;
+
+ // Find the next non-empty node.
+ do sumValue = nodes[i1++].value; while (!sumValue && i1 < n);
+ minValue = maxValue = sumValue;
+ alpha = Math.max(dy / dx, dx / dy) / (value * ratio);
+ beta = sumValue * sumValue * alpha;
+ minRatio = Math.max(maxValue / beta, beta / minValue);
+
+ // Keep adding nodes while the aspect ratio maintains or improves.
+ for (; i1 < n; ++i1) {
+ sumValue += nodeValue = nodes[i1].value;
+ if (nodeValue < minValue) minValue = nodeValue;
+ if (nodeValue > maxValue) maxValue = nodeValue;
+ beta = sumValue * sumValue * alpha;
+ newRatio = Math.max(maxValue / beta, beta / minValue);
+ if (newRatio > minRatio) { sumValue -= nodeValue; break; }
+ minRatio = newRatio;
+ }
+
+ // Position and record the row orientation.
+ rows.push(row = {value: sumValue, dice: dx < dy, children: nodes.slice(i0, i1)});
+ if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += dy * sumValue / value : y1);
+ else treemapSlice(row, x0, y0, value ? x0 += dx * sumValue / value : x1, y1);
+ value -= sumValue, i0 = i1;
+ }
+
+ return rows;
+}
+
+export default (function custom(ratio) {
+
+ function squarify(parent, x0, y0, x1, y1) {
+ squarifyRatio(ratio, parent, x0, y0, x1, y1);
+ }
+
+ squarify.ratio = function(x) {
+ return custom((x = +x) > 1 ? x : 1);
+ };
+
+ return squarify;
+})(phi);
diff --git a/node_modules/d3-interpolate/LICENSE b/node_modules/d3-interpolate/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-interpolate/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-interpolate/README.md b/node_modules/d3-interpolate/README.md
new file mode 100644
index 00000000..f5d82e78
--- /dev/null
+++ b/node_modules/d3-interpolate/README.md
@@ -0,0 +1,268 @@
+# d3-interpolate
+
+This module provides a variety of interpolation methods for blending between two values. Values may be numbers, colors, strings, arrays, or even deeply-nested objects. For example:
+
+```js
+const i = d3.interpolateNumber(10, 20);
+i(0.0); // 10
+i(0.2); // 12
+i(0.5); // 15
+i(1.0); // 20
+```
+
+The returned function `i` is called an *interpolator*. Given a starting value *a* and an ending value *b*, it takes a parameter *t* in the domain [0, 1] and returns the corresponding interpolated value between *a* and *b*. An interpolator typically returns a value equivalent to *a* at *t* = 0 and a value equivalent to *b* at *t* = 1.
+
+You can interpolate more than just numbers. To find the perceptual midpoint between steelblue and brown:
+
+```js
+d3.interpolateLab("steelblue", "brown")(0.5); // "rgb(142, 92, 109)"
+```
+
+Here’s a more elaborate example demonstrating type inference used by [interpolate](#interpolate):
+
+```js
+const i = d3.interpolate({colors: ["red", "blue"]}, {colors: ["white", "black"]});
+i(0.0); // {colors: ["rgb(255, 0, 0)", "rgb(0, 0, 255)"]}
+i(0.5); // {colors: ["rgb(255, 128, 128)", "rgb(0, 0, 128)"]}
+i(1.0); // {colors: ["rgb(255, 255, 255)", "rgb(0, 0, 0)"]}
+```
+
+Note that the generic value interpolator detects not only nested objects and arrays, but also color strings and numbers embedded in strings!
+
+## Installing
+
+If you use npm, `npm install d3-interpolate`. You can also download the [latest release on GitHub](https://github.com/d3/d3-interpolate/releases/latest). For vanilla HTML in modern browsers, import d3-interpolate from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-interpolate’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported. (If using [color interpolation](#color-spaces), also load [d3-color](https://github.com/d3/d3-color).)
+
+```html
+
+
+
+```
+
+## API Reference
+
+# d3.interpolate (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/value.js), [Examples](https://observablehq.com/@d3/d3-interpolate)
+
+Returns an interpolator between the two arbitrary values *a* and *b*. The interpolator implementation is based on the type of the end value *b*, using the following algorithm:
+
+1. If *b* is null, undefined or a boolean, use the constant *b*.
+2. If *b* is a number, use [interpolateNumber](#interpolateNumber).
+3. If *b* is a [color](https://github.com/d3/d3-color/blob/master/README.md#color) or a string coercible to a color, use [interpolateRgb](#interpolateRgb).
+4. If *b* is a [date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date), use [interpolateDate](#interpolateDate).
+5. If *b* is a string, use [interpolateString](#interpolateString).
+6. If *b* is a [typed array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray) of numbers, use [interpolateNumberArray](#interpolateNumberArray).
+7. If *b* is a generic [array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray), use [interpolateArray](#interpolateArray).
+8. If *b* is coercible to a number, use [interpolateNumber](#interpolateNumber).
+9. Use [interpolateObject](#interpolateObject).
+
+Based on the chosen interpolator, *a* is coerced to the suitable corresponding type.
+
+# d3.interpolateNumber (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/number.js), [Examples](https://observablehq.com/@d3/d3-interpolatenumber)
+
+Returns an interpolator between the two numbers *a* and *b*. The returned interpolator is equivalent to:
+
+```js
+function interpolator(t) {
+ return a * (1 - t) + b * t;
+}
+```
+
+Caution: avoid interpolating to or from the number zero when the interpolator is used to generate a string. When very small values are stringified, they may be converted to scientific notation, which is an invalid attribute or style property value in older browsers. For example, the number `0.0000001` is converted to the string `"1e-7"`. This is particularly noticeable with interpolating opacity. To avoid scientific notation, start or end the transition at 1e-6: the smallest value that is not stringified in scientific notation.
+
+# d3.interpolateRound (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/round.js), [Examples](https://observablehq.com/@d3/d3-interpolatenumber)
+
+Returns an interpolator between the two numbers *a* and *b*; the interpolator is similar to [interpolateNumber](#interpolateNumber), except it will round the resulting value to the nearest integer.
+
+# d3.interpolateString (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/string.js), [Examples](https://observablehq.com/@d3/d3-interpolatestring)
+
+Returns an interpolator between the two strings *a* and *b*. The string interpolator finds numbers embedded in *a* and *b*, where each number is of the form understood by JavaScript. A few examples of numbers that will be detected within a string: `-1`, `42`, `3.14159`, and `6.0221413e+23`.
+
+For each number embedded in *b*, the interpolator will attempt to find a corresponding number in *a*. If a corresponding number is found, a numeric interpolator is created using [interpolateNumber](#interpolateNumber). The remaining parts of the string *b* are used as a template: the static parts of the string *b* remain constant for the interpolation, with the interpolated numeric values embedded in the template.
+
+For example, if *a* is `"300 12px sans-serif"`, and *b* is `"500 36px Comic-Sans"`, two embedded numbers are found. The remaining static parts (of string *b*) are a space between the two numbers (`" "`), and the suffix (`"px Comic-Sans"`). The result of the interpolator at *t* = 0.5 is `"400 24px Comic-Sans"`.
+
+# d3.interpolateDate (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/date.js), [Examples](https://observablehq.com/@d3/d3-interpolatedate)
+
+Returns an interpolator between the two [dates](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) *a* and *b*.
+
+Note: **no defensive copy** of the returned date is created; the same Date instance is returned for every evaluation of the interpolator. No copy is made for performance reasons; interpolators are often part of the inner loop of [animated transitions](https://github.com/d3/d3-transition).
+
+# d3.interpolateArray (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/array.js), [Examples](https://observablehq.com/@d3/d3-interpolateobject)
+
+Returns an interpolator between the two arrays *a* and *b*. If *b* is a typed array (e.g., Float64Array), [interpolateNumberArray](#interpolateNumberArray) is called instead.
+
+Internally, an array template is created that is the same length as *b*. For each element in *b*, if there exists a corresponding element in *a*, a generic interpolator is created for the two elements using [interpolate](#interpolate). If there is no such element, the static value from *b* is used in the template. Then, for the given parameter *t*, the template’s embedded interpolators are evaluated. The updated array template is then returned.
+
+For example, if *a* is the array `[0, 1]` and *b* is the array `[1, 10, 100]`, then the result of the interpolator for *t* = 0.5 is the array `[0.5, 5.5, 100]`.
+
+Note: **no defensive copy** of the template array is created; modifications of the returned array may adversely affect subsequent evaluation of the interpolator. No copy is made for performance reasons; interpolators are often part of the inner loop of [animated transitions](https://github.com/d3/d3-transition).
+
+# d3.interpolateNumberArray (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/numberArray.js), [Examples](https://observablehq.com/@d3/d3-interpolatenumberarray)
+
+Returns an interpolator between the two arrays of numbers *a* and *b*. Internally, an array template is created that is the same type and length as *b*. For each element in *b*, if there exists a corresponding element in *a*, the values are directly interpolated in the array template. If there is no such element, the static value from *b* is copied. The updated array template is then returned.
+
+Note: For performance reasons, **no defensive copy** is made of the template array and the arguments *a* and *b*; modifications of these arrays may affect subsequent evaluation of the interpolator.
+
+# d3.interpolateObject (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/object.js), [Examples](https://observablehq.com/@d3/d3-interpolateobject)
+
+Returns an interpolator between the two objects *a* and *b*. Internally, an object template is created that has the same properties as *b*. For each property in *b*, if there exists a corresponding property in *a*, a generic interpolator is created for the two elements using [interpolate](#interpolate). If there is no such property, the static value from *b* is used in the template. Then, for the given parameter *t*, the template's embedded interpolators are evaluated and the updated object template is then returned.
+
+For example, if *a* is the object `{x: 0, y: 1}` and *b* is the object `{x: 1, y: 10, z: 100}`, the result of the interpolator for *t* = 0.5 is the object `{x: 0.5, y: 5.5, z: 100}`.
+
+Object interpolation is particularly useful for *dataspace interpolation*, where data is interpolated rather than attribute values. For example, you can interpolate an object which describes an arc in a pie chart, and then use [d3.arc](https://github.com/d3/d3-shape/blob/master/README.md#arc) to compute the new SVG path data.
+
+Note: **no defensive copy** of the template object is created; modifications of the returned object may adversely affect subsequent evaluation of the interpolator. No copy is made for performance reasons; interpolators are often part of the inner loop of [animated transitions](https://github.com/d3/d3-transition).
+
+# d3.interpolateTransformCss (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/transform/index.js#L62), [Examples](https://observablehq.com/@d3/d3-interpolatetransformcss)
+
+Returns an interpolator between the two 2D CSS transforms represented by *a* and *b*. Each transform is decomposed to a standard representation of translate, rotate, *x*-skew and scale; these component transformations are then interpolated. This behavior is standardized by CSS: see [matrix decomposition for animation](http://www.w3.org/TR/css3-2d-transforms/#matrix-decomposition).
+
+# d3.interpolateTransformSvg (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/transform/index.js#L63), [Examples](https://observablehq.com/@d3/d3-interpolatetransformcss)
+
+Returns an interpolator between the two 2D SVG transforms represented by *a* and *b*. Each transform is decomposed to a standard representation of translate, rotate, *x*-skew and scale; these component transformations are then interpolated. This behavior is standardized by CSS: see [matrix decomposition for animation](http://www.w3.org/TR/css3-2d-transforms/#matrix-decomposition).
+
+# d3.interpolateZoom (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/zoom.js), [Examples](https://observablehq.com/@d3/d3-interpolatezoom)
+
+Returns an interpolator between the two views *a* and *b* of a two-dimensional plane, based on [“Smooth and efficient zooming and panning”](http://www.win.tue.nl/~vanwijk/zoompan.pdf) by Jarke J. van Wijk and Wim A.A. Nuij. Each view is defined as an array of three numbers: *cx*, *cy* and *width*. The first two coordinates *cx*, *cy* represent the center of the viewport; the last coordinate *width* represents the size of the viewport.
+
+The returned interpolator exposes a *duration* property which encodes the recommended transition duration in milliseconds. This duration is based on the path length of the curved trajectory through *x,y* space. If you want a slower or faster transition, multiply this by an arbitrary scale factor (V as described in the original paper).
+
+# *interpolateZoom*.rho (rho ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/zoom.js)
+
+Given a [zoom interpolator](#interpolateZoom), returns a new zoom interpolator using the specified curvature *rho*. When *rho* is close to 0, the interpolator is almost linear. The default curvature is sqrt(2).
+
+# d3.interpolateDiscrete (values ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/discrete.js), [Examples](https://observablehq.com/@d3/d3-interpolatediscrete)
+
+Returns a discrete interpolator for the given array of *values*. The returned interpolator maps *t* in [0, 1 / *n*) to *values*[0], *t* in [1 / *n*, 2 / *n*) to *values*[1], and so on, where *n* = *values*.length. In effect, this is a lightweight [quantize scale](https://github.com/d3/d3-scale/blob/master/README.md#quantize-scales) with a fixed domain of [0, 1].
+
+### Sampling
+
+# d3.quantize (interpolator , n ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/d3-quantize)
+
+Returns *n* uniformly-spaced samples from the specified *interpolator*, where *n* is an integer greater than one. The first sample is always at *t* = 0, and the last sample is always at *t* = 1. This can be useful in generating a fixed number of samples from a given interpolator, such as to derive the range of a [quantize scale](https://github.com/d3/d3-scale/blob/master/README.md#quantize-scales) from a [continuous interpolator](https://github.com/d3/d3-scale-chromatic/blob/master/README.md#interpolateWarm).
+
+Caution: this method will not work with interpolators that do not return defensive copies of their output, such as [d3.interpolateArray](#interpolateArray), [d3.interpolateDate](#interpolateDate) and [d3.interpolateObject](#interpolateObject). For those interpolators, you must wrap the interpolator and create a copy for each returned value.
+
+### Color Spaces
+
+# d3.interpolateRgb (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/rgb.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateRgbBasis (colors ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/rgb.js#L54), [Examples](https://observablehq.com/@d3/working-with-color)
+
+Returns a uniform nonrational B-spline interpolator through the specified array of *colors*, which are converted to [RGB color space](https://github.com/d3/d3-color/blob/master/README.md#rgb). Implicit control points are generated such that the interpolator returns *colors*[0] at *t* = 0 and *colors*[*colors*.length - 1] at *t* = 1. Opacity interpolation is not currently supported. See also [d3.interpolateBasis](#interpolateBasis), and see [d3-scale-chromatic](https://github.com/d3/d3-scale-chromatic) for examples.
+
+# d3.interpolateRgbBasisClosed (colors ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/rgb.js#L55), [Examples](https://observablehq.com/@d3/working-with-color)
+
+Returns a uniform nonrational B-spline interpolator through the specified array of *colors*, which are converted to [RGB color space](https://github.com/d3/d3-color/blob/master/README.md#rgb). The control points are implicitly repeated such that the resulting spline has cyclical C² continuity when repeated around *t* in [0,1]; this is useful, for example, to create cyclical color scales. Opacity interpolation is not currently supported. See also [d3.interpolateBasisClosed](#interpolateBasisClosed), and see [d3-scale-chromatic](https://github.com/d3/d3-scale-chromatic) for examples.
+
+# d3.interpolateHsl (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/hsl.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateHslLong (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/hsl.js#L21), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateLab (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/lab.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateHcl (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/hcl.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+ab color space](https://en.wikipedia.org/wiki/CIELAB_color_space#Cylindrical_representation:_CIELCh_or_CIEHLC) interpolator between the two colors *a* and *b*. The colors *a* and *b* need not be in CIELChab ; they will be converted to CIELChab using [d3.hcl](https://github.com/d3/d3-color/blob/master/README.md#hcl). If either color’s hue or chroma is NaN, the opposing color’s channel value is used. The shortest path between hues is used. The return value of the interpolator is an RGB string.
+
+# d3.interpolateHclLong (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/hcl.js#L21), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateCubehelix (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/cubehelix.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# d3.interpolateCubehelixLong (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/cubehelix.js#L29), [Examples](https://observablehq.com/@d3/working-with-color)
+
+# interpolate .gamma (gamma )
+
+Given that *interpolate* is one of [interpolateRgb](#interpolateRgb), [interpolateCubehelix](#interpolateCubehelix) or [interpolateCubehelixLong](#interpolateCubehelixLong), returns a new interpolator factory of the same type using the specified *gamma*. For example, to interpolate from purple to orange with a gamma of 2.2 in RGB space:
+
+```js
+const interpolator = d3.interpolateRgb.gamma(2.2)("purple", "orange");
+```
+
+See Eric Brasseur’s article, [Gamma error in picture scaling](http://www.ericbrasseur.org/gamma.html), for more on gamma correction.
+
+# d3.interpolateHue (a , b ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/hue.js), [Examples](https://observablehq.com/@d3/working-with-color)
+
+Returns an interpolator between the two hue angles *a* and *b*. If either hue is NaN, the opposing value is used. The shortest path between hues is used. The return value of the interpolator is a number in [0, 360).
+
+### Splines
+
+Whereas standard interpolators blend from a starting value *a* at *t* = 0 to an ending value *b* at *t* = 1, spline interpolators smoothly blend multiple input values for *t* in [0,1] using piecewise polynomial functions. Only cubic uniform nonrational [B-splines](https://en.wikipedia.org/wiki/B-spline) are currently supported, also known as basis splines.
+
+# d3.interpolateBasis (values ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/basis.js), [Examples](https://observablehq.com/@d3/d3-interpolatebasis)
+
+Returns a uniform nonrational B-spline interpolator through the specified array of *values*, which must be numbers. Implicit control points are generated such that the interpolator returns *values*[0] at *t* = 0 and *values*[*values*.length - 1] at *t* = 1. See also [d3.curveBasis](https://github.com/d3/d3-shape/blob/master/README.md#curveBasis).
+
+# d3.interpolateBasisClosed (values ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/basisClosed.js), [Examples](https://observablehq.com/@d3/d3-interpolatebasis)
+
+Returns a uniform nonrational B-spline interpolator through the specified array of *values*, which must be numbers. The control points are implicitly repeated such that the resulting one-dimensional spline has cyclical C² continuity when repeated around *t* in [0,1]. See also [d3.curveBasisClosed](https://github.com/d3/d3-shape/blob/master/README.md#curveBasisClosed).
+
+### Piecewise
+
+# d3.piecewise ([interpolate , ]values ) · [Source](https://github.com/d3/d3-interpolate/blob/master/src/piecewise.js), [Examples](https://observablehq.com/@d3/d3-piecewise)
+
+Returns a piecewise interpolator, composing interpolators for each adjacent pair of *values*. The returned interpolator maps *t* in [0, 1 / (*n* - 1)] to *interpolate*(*values*[0], *values*[1]), *t* in [1 / (*n* - 1), 2 / (*n* - 1)] to *interpolate*(*values*[1], *values*[2]), and so on, where *n* = *values*.length. In effect, this is a lightweight [linear scale](https://github.com/d3/d3-scale/blob/master/README.md#linear-scales). For example, to blend through red, green and blue:
+
+```js
+const interpolate = d3.piecewise(d3.interpolateRgb.gamma(2.2), ["red", "green", "blue"]);
+```
+
+If *interpolate* is not specified, defaults to [d3.interpolate](#interpolate).
diff --git a/node_modules/d3-interpolate/dist/d3-interpolate.js b/node_modules/d3-interpolate/dist/d3-interpolate.js
new file mode 100644
index 00000000..a374eedf
--- /dev/null
+++ b/node_modules/d3-interpolate/dist/d3-interpolate.js
@@ -0,0 +1,590 @@
+// https://d3js.org/d3-interpolate/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-color')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-color'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+}(this, (function (exports, d3Color) { 'use strict';
+
+function basis(t1, v0, v1, v2, v3) {
+ var t2 = t1 * t1, t3 = t2 * t1;
+ return ((1 - 3 * t1 + 3 * t2 - t3) * v0
+ + (4 - 6 * t2 + 3 * t3) * v1
+ + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2
+ + t3 * v3) / 6;
+}
+
+function basis$1(values) {
+ var n = values.length - 1;
+ return function(t) {
+ var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n),
+ v1 = values[i],
+ v2 = values[i + 1],
+ v0 = i > 0 ? values[i - 1] : 2 * v1 - v2,
+ v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1;
+ return basis((t - i / n) * n, v0, v1, v2, v3);
+ };
+}
+
+function basisClosed(values) {
+ var n = values.length;
+ return function(t) {
+ var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n),
+ v0 = values[(i + n - 1) % n],
+ v1 = values[i % n],
+ v2 = values[(i + 1) % n],
+ v3 = values[(i + 2) % n];
+ return basis((t - i / n) * n, v0, v1, v2, v3);
+ };
+}
+
+var constant = x => () => x;
+
+function linear(a, d) {
+ return function(t) {
+ return a + t * d;
+ };
+}
+
+function exponential(a, b, y) {
+ return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {
+ return Math.pow(a + t * b, y);
+ };
+}
+
+function hue$1(a, b) {
+ var d = b - a;
+ return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant(isNaN(a) ? b : a);
+}
+
+function gamma(y) {
+ return (y = +y) === 1 ? nogamma : function(a, b) {
+ return b - a ? exponential(a, b, y) : constant(isNaN(a) ? b : a);
+ };
+}
+
+function nogamma(a, b) {
+ var d = b - a;
+ return d ? linear(a, d) : constant(isNaN(a) ? b : a);
+}
+
+var rgb = (function rgbGamma(y) {
+ var color = gamma(y);
+
+ function rgb(start, end) {
+ var r = color((start = d3Color.rgb(start)).r, (end = d3Color.rgb(end)).r),
+ g = color(start.g, end.g),
+ b = color(start.b, end.b),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.r = r(t);
+ start.g = g(t);
+ start.b = b(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+
+ rgb.gamma = rgbGamma;
+
+ return rgb;
+})(1);
+
+function rgbSpline(spline) {
+ return function(colors) {
+ var n = colors.length,
+ r = new Array(n),
+ g = new Array(n),
+ b = new Array(n),
+ i, color;
+ for (i = 0; i < n; ++i) {
+ color = d3Color.rgb(colors[i]);
+ r[i] = color.r || 0;
+ g[i] = color.g || 0;
+ b[i] = color.b || 0;
+ }
+ r = spline(r);
+ g = spline(g);
+ b = spline(b);
+ color.opacity = 1;
+ return function(t) {
+ color.r = r(t);
+ color.g = g(t);
+ color.b = b(t);
+ return color + "";
+ };
+ };
+}
+
+var rgbBasis = rgbSpline(basis$1);
+var rgbBasisClosed = rgbSpline(basisClosed);
+
+function numberArray(a, b) {
+ if (!b) b = [];
+ var n = a ? Math.min(b.length, a.length) : 0,
+ c = b.slice(),
+ i;
+ return function(t) {
+ for (i = 0; i < n; ++i) c[i] = a[i] * (1 - t) + b[i] * t;
+ return c;
+ };
+}
+
+function isNumberArray(x) {
+ return ArrayBuffer.isView(x) && !(x instanceof DataView);
+}
+
+function array(a, b) {
+ return (isNumberArray(b) ? numberArray : genericArray)(a, b);
+}
+
+function genericArray(a, b) {
+ var nb = b ? b.length : 0,
+ na = a ? Math.min(nb, a.length) : 0,
+ x = new Array(na),
+ c = new Array(nb),
+ i;
+
+ for (i = 0; i < na; ++i) x[i] = value(a[i], b[i]);
+ for (; i < nb; ++i) c[i] = b[i];
+
+ return function(t) {
+ for (i = 0; i < na; ++i) c[i] = x[i](t);
+ return c;
+ };
+}
+
+function date(a, b) {
+ var d = new Date;
+ return a = +a, b = +b, function(t) {
+ return d.setTime(a * (1 - t) + b * t), d;
+ };
+}
+
+function number(a, b) {
+ return a = +a, b = +b, function(t) {
+ return a * (1 - t) + b * t;
+ };
+}
+
+function object(a, b) {
+ var i = {},
+ c = {},
+ k;
+
+ if (a === null || typeof a !== "object") a = {};
+ if (b === null || typeof b !== "object") b = {};
+
+ for (k in b) {
+ if (k in a) {
+ i[k] = value(a[k], b[k]);
+ } else {
+ c[k] = b[k];
+ }
+ }
+
+ return function(t) {
+ for (k in i) c[k] = i[k](t);
+ return c;
+ };
+}
+
+var reA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g,
+ reB = new RegExp(reA.source, "g");
+
+function zero(b) {
+ return function() {
+ return b;
+ };
+}
+
+function one(b) {
+ return function(t) {
+ return b(t) + "";
+ };
+}
+
+function string(a, b) {
+ var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b
+ am, // current match in a
+ bm, // current match in b
+ bs, // string preceding current number in b, if any
+ i = -1, // index in s
+ s = [], // string constants and placeholders
+ q = []; // number interpolators
+
+ // Coerce inputs to strings.
+ a = a + "", b = b + "";
+
+ // Interpolate pairs of numbers in a & b.
+ while ((am = reA.exec(a))
+ && (bm = reB.exec(b))) {
+ if ((bs = bm.index) > bi) { // a string precedes the next number in b
+ bs = b.slice(bi, bs);
+ if (s[i]) s[i] += bs; // coalesce with previous string
+ else s[++i] = bs;
+ }
+ if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match
+ if (s[i]) s[i] += bm; // coalesce with previous string
+ else s[++i] = bm;
+ } else { // interpolate non-matching numbers
+ s[++i] = null;
+ q.push({i: i, x: number(am, bm)});
+ }
+ bi = reB.lastIndex;
+ }
+
+ // Add remains of b.
+ if (bi < b.length) {
+ bs = b.slice(bi);
+ if (s[i]) s[i] += bs; // coalesce with previous string
+ else s[++i] = bs;
+ }
+
+ // Special optimization for only a single match.
+ // Otherwise, interpolate each of the numbers and rejoin the string.
+ return s.length < 2 ? (q[0]
+ ? one(q[0].x)
+ : zero(b))
+ : (b = q.length, function(t) {
+ for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
+ return s.join("");
+ });
+}
+
+function value(a, b) {
+ var t = typeof b, c;
+ return b == null || t === "boolean" ? constant(b)
+ : (t === "number" ? number
+ : t === "string" ? ((c = d3Color.color(b)) ? (b = c, rgb) : string)
+ : b instanceof d3Color.color ? rgb
+ : b instanceof Date ? date
+ : isNumberArray(b) ? numberArray
+ : Array.isArray(b) ? genericArray
+ : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object
+ : number)(a, b);
+}
+
+function discrete(range) {
+ var n = range.length;
+ return function(t) {
+ return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))];
+ };
+}
+
+function hue(a, b) {
+ var i = hue$1(+a, +b);
+ return function(t) {
+ var x = i(t);
+ return x - 360 * Math.floor(x / 360);
+ };
+}
+
+function round(a, b) {
+ return a = +a, b = +b, function(t) {
+ return Math.round(a * (1 - t) + b * t);
+ };
+}
+
+var degrees = 180 / Math.PI;
+
+var identity = {
+ translateX: 0,
+ translateY: 0,
+ rotate: 0,
+ skewX: 0,
+ scaleX: 1,
+ scaleY: 1
+};
+
+function decompose(a, b, c, d, e, f) {
+ var scaleX, scaleY, skewX;
+ if (scaleX = Math.sqrt(a * a + b * b)) a /= scaleX, b /= scaleX;
+ if (skewX = a * c + b * d) c -= a * skewX, d -= b * skewX;
+ if (scaleY = Math.sqrt(c * c + d * d)) c /= scaleY, d /= scaleY, skewX /= scaleY;
+ if (a * d < b * c) a = -a, b = -b, skewX = -skewX, scaleX = -scaleX;
+ return {
+ translateX: e,
+ translateY: f,
+ rotate: Math.atan2(b, a) * degrees,
+ skewX: Math.atan(skewX) * degrees,
+ scaleX: scaleX,
+ scaleY: scaleY
+ };
+}
+
+var svgNode;
+
+/* eslint-disable no-undef */
+function parseCss(value) {
+ const m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + "");
+ return m.isIdentity ? identity : decompose(m.a, m.b, m.c, m.d, m.e, m.f);
+}
+
+function parseSvg(value) {
+ if (value == null) return identity;
+ if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g");
+ svgNode.setAttribute("transform", value);
+ if (!(value = svgNode.transform.baseVal.consolidate())) return identity;
+ value = value.matrix;
+ return decompose(value.a, value.b, value.c, value.d, value.e, value.f);
+}
+
+function interpolateTransform(parse, pxComma, pxParen, degParen) {
+
+ function pop(s) {
+ return s.length ? s.pop() + " " : "";
+ }
+
+ function translate(xa, ya, xb, yb, s, q) {
+ if (xa !== xb || ya !== yb) {
+ var i = s.push("translate(", null, pxComma, null, pxParen);
+ q.push({i: i - 4, x: number(xa, xb)}, {i: i - 2, x: number(ya, yb)});
+ } else if (xb || yb) {
+ s.push("translate(" + xb + pxComma + yb + pxParen);
+ }
+ }
+
+ function rotate(a, b, s, q) {
+ if (a !== b) {
+ if (a - b > 180) b += 360; else if (b - a > 180) a += 360; // shortest path
+ q.push({i: s.push(pop(s) + "rotate(", null, degParen) - 2, x: number(a, b)});
+ } else if (b) {
+ s.push(pop(s) + "rotate(" + b + degParen);
+ }
+ }
+
+ function skewX(a, b, s, q) {
+ if (a !== b) {
+ q.push({i: s.push(pop(s) + "skewX(", null, degParen) - 2, x: number(a, b)});
+ } else if (b) {
+ s.push(pop(s) + "skewX(" + b + degParen);
+ }
+ }
+
+ function scale(xa, ya, xb, yb, s, q) {
+ if (xa !== xb || ya !== yb) {
+ var i = s.push(pop(s) + "scale(", null, ",", null, ")");
+ q.push({i: i - 4, x: number(xa, xb)}, {i: i - 2, x: number(ya, yb)});
+ } else if (xb !== 1 || yb !== 1) {
+ s.push(pop(s) + "scale(" + xb + "," + yb + ")");
+ }
+ }
+
+ return function(a, b) {
+ var s = [], // string constants and placeholders
+ q = []; // number interpolators
+ a = parse(a), b = parse(b);
+ translate(a.translateX, a.translateY, b.translateX, b.translateY, s, q);
+ rotate(a.rotate, b.rotate, s, q);
+ skewX(a.skewX, b.skewX, s, q);
+ scale(a.scaleX, a.scaleY, b.scaleX, b.scaleY, s, q);
+ a = b = null; // gc
+ return function(t) {
+ var i = -1, n = q.length, o;
+ while (++i < n) s[(o = q[i]).i] = o.x(t);
+ return s.join("");
+ };
+ };
+}
+
+var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)");
+var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")");
+
+var epsilon2 = 1e-12;
+
+function cosh(x) {
+ return ((x = Math.exp(x)) + 1 / x) / 2;
+}
+
+function sinh(x) {
+ return ((x = Math.exp(x)) - 1 / x) / 2;
+}
+
+function tanh(x) {
+ return ((x = Math.exp(2 * x)) - 1) / (x + 1);
+}
+
+var zoom = (function zoomRho(rho, rho2, rho4) {
+
+ // p0 = [ux0, uy0, w0]
+ // p1 = [ux1, uy1, w1]
+ function zoom(p0, p1) {
+ var ux0 = p0[0], uy0 = p0[1], w0 = p0[2],
+ ux1 = p1[0], uy1 = p1[1], w1 = p1[2],
+ dx = ux1 - ux0,
+ dy = uy1 - uy0,
+ d2 = dx * dx + dy * dy,
+ i,
+ S;
+
+ // Special case for u0 ≅ u1.
+ if (d2 < epsilon2) {
+ S = Math.log(w1 / w0) / rho;
+ i = function(t) {
+ return [
+ ux0 + t * dx,
+ uy0 + t * dy,
+ w0 * Math.exp(rho * t * S)
+ ];
+ };
+ }
+
+ // General case.
+ else {
+ var d1 = Math.sqrt(d2),
+ b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),
+ b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),
+ r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),
+ r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+ S = (r1 - r0) / rho;
+ i = function(t) {
+ var s = t * S,
+ coshr0 = cosh(r0),
+ u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));
+ return [
+ ux0 + u * dx,
+ uy0 + u * dy,
+ w0 * coshr0 / cosh(rho * s + r0)
+ ];
+ };
+ }
+
+ i.duration = S * 1000 * rho / Math.SQRT2;
+
+ return i;
+ }
+
+ zoom.rho = function(_) {
+ var _1 = Math.max(1e-3, +_), _2 = _1 * _1, _4 = _2 * _2;
+ return zoomRho(_1, _2, _4);
+ };
+
+ return zoom;
+})(Math.SQRT2, 2, 4);
+
+function hsl(hue) {
+ return function(start, end) {
+ var h = hue((start = d3Color.hsl(start)).h, (end = d3Color.hsl(end)).h),
+ s = nogamma(start.s, end.s),
+ l = nogamma(start.l, end.l),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.s = s(t);
+ start.l = l(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+}
+
+var hsl$1 = hsl(hue$1);
+var hslLong = hsl(nogamma);
+
+function lab(start, end) {
+ var l = nogamma((start = d3Color.lab(start)).l, (end = d3Color.lab(end)).l),
+ a = nogamma(start.a, end.a),
+ b = nogamma(start.b, end.b),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.l = l(t);
+ start.a = a(t);
+ start.b = b(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+}
+
+function hcl(hue) {
+ return function(start, end) {
+ var h = hue((start = d3Color.hcl(start)).h, (end = d3Color.hcl(end)).h),
+ c = nogamma(start.c, end.c),
+ l = nogamma(start.l, end.l),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.c = c(t);
+ start.l = l(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+}
+
+var hcl$1 = hcl(hue$1);
+var hclLong = hcl(nogamma);
+
+function cubehelix(hue) {
+ return (function cubehelixGamma(y) {
+ y = +y;
+
+ function cubehelix(start, end) {
+ var h = hue((start = d3Color.cubehelix(start)).h, (end = d3Color.cubehelix(end)).h),
+ s = nogamma(start.s, end.s),
+ l = nogamma(start.l, end.l),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.s = s(t);
+ start.l = l(Math.pow(t, y));
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+
+ cubehelix.gamma = cubehelixGamma;
+
+ return cubehelix;
+ })(1);
+}
+
+var cubehelix$1 = cubehelix(hue$1);
+var cubehelixLong = cubehelix(nogamma);
+
+function piecewise(interpolate, values) {
+ if (values === undefined) values = interpolate, interpolate = value;
+ var i = 0, n = values.length - 1, v = values[0], I = new Array(n < 0 ? 0 : n);
+ while (i < n) I[i] = interpolate(v, v = values[++i]);
+ return function(t) {
+ var i = Math.max(0, Math.min(n - 1, Math.floor(t *= n)));
+ return I[i](t - i);
+ };
+}
+
+function quantize(interpolator, n) {
+ var samples = new Array(n);
+ for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1));
+ return samples;
+}
+
+exports.interpolate = value;
+exports.interpolateArray = array;
+exports.interpolateBasis = basis$1;
+exports.interpolateBasisClosed = basisClosed;
+exports.interpolateCubehelix = cubehelix$1;
+exports.interpolateCubehelixLong = cubehelixLong;
+exports.interpolateDate = date;
+exports.interpolateDiscrete = discrete;
+exports.interpolateHcl = hcl$1;
+exports.interpolateHclLong = hclLong;
+exports.interpolateHsl = hsl$1;
+exports.interpolateHslLong = hslLong;
+exports.interpolateHue = hue;
+exports.interpolateLab = lab;
+exports.interpolateNumber = number;
+exports.interpolateNumberArray = numberArray;
+exports.interpolateObject = object;
+exports.interpolateRgb = rgb;
+exports.interpolateRgbBasis = rgbBasis;
+exports.interpolateRgbBasisClosed = rgbBasisClosed;
+exports.interpolateRound = round;
+exports.interpolateString = string;
+exports.interpolateTransformCss = interpolateTransformCss;
+exports.interpolateTransformSvg = interpolateTransformSvg;
+exports.interpolateZoom = zoom;
+exports.piecewise = piecewise;
+exports.quantize = quantize;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-interpolate/dist/d3-interpolate.min.js b/node_modules/d3-interpolate/dist/d3-interpolate.min.js
new file mode 100644
index 00000000..d1b62636
--- /dev/null
+++ b/node_modules/d3-interpolate/dist/d3-interpolate.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-interpolate/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports,require("d3-color")):"function"==typeof define&&define.amd?define(["exports","d3-color"],n):n((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{},t.d3)}(this,(function(t,n){"use strict";function r(t,n,r,e,a){var o=t*t,u=o*t;return((1-3*t+3*o-u)*n+(4-6*o+3*u)*r+(1+3*t+3*o-3*u)*e+u*a)/6}function e(t){var n=t.length-1;return function(e){var a=e<=0?e=0:e>=1?(e=1,n-1):Math.floor(e*n),o=t[a],u=t[a+1],i=a>0?t[a-1]:2*o-u,c=a()=>t;function u(t,n){return function(r){return t+r*n}}function i(t,n){var r=n-t;return r?u(t,r>180||r<-180?r-360*Math.round(r/360):r):o(isNaN(t)?n:t)}function c(t){return 1==(t=+t)?l:function(n,r){return r-n?function(t,n,r){return t=Math.pow(t,r),n=Math.pow(n,r)-t,r=1/r,function(e){return Math.pow(t+e*n,r)}}(n,r,t):o(isNaN(n)?r:n)}}function l(t,n){var r=n-t;return r?u(t,r):o(isNaN(t)?n:t)}var f=function t(r){var e=c(r);function a(t,r){var a=e((t=n.rgb(t)).r,(r=n.rgb(r)).r),o=e(t.g,r.g),u=e(t.b,r.b),i=l(t.opacity,r.opacity);return function(n){return t.r=a(n),t.g=o(n),t.b=u(n),t.opacity=i(n),t+""}}return a.gamma=t,a}(1);function s(t){return function(r){var e,a,o=r.length,u=new Array(o),i=new Array(o),c=new Array(o);for(e=0;eo&&(a=n.slice(o,a),i[u]?i[u]+=a:i[++u]=a),(r=r[0])===(e=e[0])?i[u]?i[u]+=e:i[++u]=e:(i[++u]=null,c.push({i:u,x:b(r,e)})),o=w.lastIndex;return o180?n+=360:n-t>180&&(t+=360),o.push({i:r.push(a(r)+"rotate(",null,e)-2,x:b(t,n)})):n&&r.push(a(r)+"rotate("+n+e)}(o.rotate,u.rotate,i,c),function(t,n,r,o){t!==n?o.push({i:r.push(a(r)+"skewX(",null,e)-2,x:b(t,n)}):n&&r.push(a(r)+"skewX("+n+e)}(o.skewX,u.skewX,i,c),function(t,n,r,e,o,u){if(t!==r||n!==e){var i=o.push(a(o)+"scale(",null,",",null,")");u.push({i:i-4,x:b(t,r)},{i:i-2,x:b(n,e)})}else 1===r&&1===e||o.push(a(o)+"scale("+r+","+e+")")}(o.scaleX,o.scaleY,u.scaleX,u.scaleY,i,c),o=u=null,function(t){for(var n,r=-1,e=c.length;++r=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-interpolate.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-interpolate/",
+ "jsdelivr": "dist/d3-interpolate.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "interpolate",
+ "interpolation",
+ "color"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-interpolate",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-interpolate.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-interpolate.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-interpolate/src/array.js b/node_modules/d3-interpolate/src/array.js
new file mode 100644
index 00000000..89f77225
--- /dev/null
+++ b/node_modules/d3-interpolate/src/array.js
@@ -0,0 +1,22 @@
+import value from "./value.js";
+import numberArray, {isNumberArray} from "./numberArray.js";
+
+export default function(a, b) {
+ return (isNumberArray(b) ? numberArray : genericArray)(a, b);
+}
+
+export function genericArray(a, b) {
+ var nb = b ? b.length : 0,
+ na = a ? Math.min(nb, a.length) : 0,
+ x = new Array(na),
+ c = new Array(nb),
+ i;
+
+ for (i = 0; i < na; ++i) x[i] = value(a[i], b[i]);
+ for (; i < nb; ++i) c[i] = b[i];
+
+ return function(t) {
+ for (i = 0; i < na; ++i) c[i] = x[i](t);
+ return c;
+ };
+}
diff --git a/node_modules/d3-interpolate/src/basis.js b/node_modules/d3-interpolate/src/basis.js
new file mode 100644
index 00000000..0d853f05
--- /dev/null
+++ b/node_modules/d3-interpolate/src/basis.js
@@ -0,0 +1,19 @@
+export function basis(t1, v0, v1, v2, v3) {
+ var t2 = t1 * t1, t3 = t2 * t1;
+ return ((1 - 3 * t1 + 3 * t2 - t3) * v0
+ + (4 - 6 * t2 + 3 * t3) * v1
+ + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2
+ + t3 * v3) / 6;
+}
+
+export default function(values) {
+ var n = values.length - 1;
+ return function(t) {
+ var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n),
+ v1 = values[i],
+ v2 = values[i + 1],
+ v0 = i > 0 ? values[i - 1] : 2 * v1 - v2,
+ v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1;
+ return basis((t - i / n) * n, v0, v1, v2, v3);
+ };
+}
diff --git a/node_modules/d3-interpolate/src/basisClosed.js b/node_modules/d3-interpolate/src/basisClosed.js
new file mode 100644
index 00000000..2639d928
--- /dev/null
+++ b/node_modules/d3-interpolate/src/basisClosed.js
@@ -0,0 +1,13 @@
+import {basis} from "./basis.js";
+
+export default function(values) {
+ var n = values.length;
+ return function(t) {
+ var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n),
+ v0 = values[(i + n - 1) % n],
+ v1 = values[i % n],
+ v2 = values[(i + 1) % n],
+ v3 = values[(i + 2) % n];
+ return basis((t - i / n) * n, v0, v1, v2, v3);
+ };
+}
diff --git a/node_modules/d3-interpolate/src/color.js b/node_modules/d3-interpolate/src/color.js
new file mode 100644
index 00000000..4630fb2f
--- /dev/null
+++ b/node_modules/d3-interpolate/src/color.js
@@ -0,0 +1,29 @@
+import constant from "./constant.js";
+
+function linear(a, d) {
+ return function(t) {
+ return a + t * d;
+ };
+}
+
+function exponential(a, b, y) {
+ return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {
+ return Math.pow(a + t * b, y);
+ };
+}
+
+export function hue(a, b) {
+ var d = b - a;
+ return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant(isNaN(a) ? b : a);
+}
+
+export function gamma(y) {
+ return (y = +y) === 1 ? nogamma : function(a, b) {
+ return b - a ? exponential(a, b, y) : constant(isNaN(a) ? b : a);
+ };
+}
+
+export default function nogamma(a, b) {
+ var d = b - a;
+ return d ? linear(a, d) : constant(isNaN(a) ? b : a);
+}
diff --git a/node_modules/d3-interpolate/src/constant.js b/node_modules/d3-interpolate/src/constant.js
new file mode 100644
index 00000000..3487c0dd
--- /dev/null
+++ b/node_modules/d3-interpolate/src/constant.js
@@ -0,0 +1 @@
+export default x => () => x;
diff --git a/node_modules/d3-interpolate/src/cubehelix.js b/node_modules/d3-interpolate/src/cubehelix.js
new file mode 100644
index 00000000..2c4f64bd
--- /dev/null
+++ b/node_modules/d3-interpolate/src/cubehelix.js
@@ -0,0 +1,29 @@
+import {cubehelix as colorCubehelix} from "d3-color";
+import color, {hue} from "./color.js";
+
+function cubehelix(hue) {
+ return (function cubehelixGamma(y) {
+ y = +y;
+
+ function cubehelix(start, end) {
+ var h = hue((start = colorCubehelix(start)).h, (end = colorCubehelix(end)).h),
+ s = color(start.s, end.s),
+ l = color(start.l, end.l),
+ opacity = color(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.s = s(t);
+ start.l = l(Math.pow(t, y));
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+
+ cubehelix.gamma = cubehelixGamma;
+
+ return cubehelix;
+ })(1);
+}
+
+export default cubehelix(hue);
+export var cubehelixLong = cubehelix(color);
diff --git a/node_modules/d3-interpolate/src/date.js b/node_modules/d3-interpolate/src/date.js
new file mode 100644
index 00000000..cdfbea79
--- /dev/null
+++ b/node_modules/d3-interpolate/src/date.js
@@ -0,0 +1,6 @@
+export default function(a, b) {
+ var d = new Date;
+ return a = +a, b = +b, function(t) {
+ return d.setTime(a * (1 - t) + b * t), d;
+ };
+}
diff --git a/node_modules/d3-interpolate/src/discrete.js b/node_modules/d3-interpolate/src/discrete.js
new file mode 100644
index 00000000..b3d1e3b6
--- /dev/null
+++ b/node_modules/d3-interpolate/src/discrete.js
@@ -0,0 +1,6 @@
+export default function(range) {
+ var n = range.length;
+ return function(t) {
+ return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))];
+ };
+}
diff --git a/node_modules/d3-interpolate/src/hcl.js b/node_modules/d3-interpolate/src/hcl.js
new file mode 100644
index 00000000..03125802
--- /dev/null
+++ b/node_modules/d3-interpolate/src/hcl.js
@@ -0,0 +1,21 @@
+import {hcl as colorHcl} from "d3-color";
+import color, {hue} from "./color.js";
+
+function hcl(hue) {
+ return function(start, end) {
+ var h = hue((start = colorHcl(start)).h, (end = colorHcl(end)).h),
+ c = color(start.c, end.c),
+ l = color(start.l, end.l),
+ opacity = color(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.c = c(t);
+ start.l = l(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+}
+
+export default hcl(hue);
+export var hclLong = hcl(color);
diff --git a/node_modules/d3-interpolate/src/hsl.js b/node_modules/d3-interpolate/src/hsl.js
new file mode 100644
index 00000000..2f78a901
--- /dev/null
+++ b/node_modules/d3-interpolate/src/hsl.js
@@ -0,0 +1,21 @@
+import {hsl as colorHsl} from "d3-color";
+import color, {hue} from "./color.js";
+
+function hsl(hue) {
+ return function(start, end) {
+ var h = hue((start = colorHsl(start)).h, (end = colorHsl(end)).h),
+ s = color(start.s, end.s),
+ l = color(start.l, end.l),
+ opacity = color(start.opacity, end.opacity);
+ return function(t) {
+ start.h = h(t);
+ start.s = s(t);
+ start.l = l(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+}
+
+export default hsl(hue);
+export var hslLong = hsl(color);
diff --git a/node_modules/d3-interpolate/src/hue.js b/node_modules/d3-interpolate/src/hue.js
new file mode 100644
index 00000000..5d8d4b9c
--- /dev/null
+++ b/node_modules/d3-interpolate/src/hue.js
@@ -0,0 +1,9 @@
+import {hue} from "./color.js";
+
+export default function(a, b) {
+ var i = hue(+a, +b);
+ return function(t) {
+ var x = i(t);
+ return x - 360 * Math.floor(x / 360);
+ };
+}
diff --git a/node_modules/d3-interpolate/src/index.js b/node_modules/d3-interpolate/src/index.js
new file mode 100644
index 00000000..b4dce7d5
--- /dev/null
+++ b/node_modules/d3-interpolate/src/index.js
@@ -0,0 +1,21 @@
+export {default as interpolate} from "./value.js";
+export {default as interpolateArray} from "./array.js";
+export {default as interpolateBasis} from "./basis.js";
+export {default as interpolateBasisClosed} from "./basisClosed.js";
+export {default as interpolateDate} from "./date.js";
+export {default as interpolateDiscrete} from "./discrete.js";
+export {default as interpolateHue} from "./hue.js";
+export {default as interpolateNumber} from "./number.js";
+export {default as interpolateNumberArray} from "./numberArray.js";
+export {default as interpolateObject} from "./object.js";
+export {default as interpolateRound} from "./round.js";
+export {default as interpolateString} from "./string.js";
+export {interpolateTransformCss, interpolateTransformSvg} from "./transform/index.js";
+export {default as interpolateZoom} from "./zoom.js";
+export {default as interpolateRgb, rgbBasis as interpolateRgbBasis, rgbBasisClosed as interpolateRgbBasisClosed} from "./rgb.js";
+export {default as interpolateHsl, hslLong as interpolateHslLong} from "./hsl.js";
+export {default as interpolateLab} from "./lab.js";
+export {default as interpolateHcl, hclLong as interpolateHclLong} from "./hcl.js";
+export {default as interpolateCubehelix, cubehelixLong as interpolateCubehelixLong} from "./cubehelix.js";
+export {default as piecewise} from "./piecewise.js";
+export {default as quantize} from "./quantize.js";
diff --git a/node_modules/d3-interpolate/src/lab.js b/node_modules/d3-interpolate/src/lab.js
new file mode 100644
index 00000000..8fbf7f35
--- /dev/null
+++ b/node_modules/d3-interpolate/src/lab.js
@@ -0,0 +1,16 @@
+import {lab as colorLab} from "d3-color";
+import color from "./color.js";
+
+export default function lab(start, end) {
+ var l = color((start = colorLab(start)).l, (end = colorLab(end)).l),
+ a = color(start.a, end.a),
+ b = color(start.b, end.b),
+ opacity = color(start.opacity, end.opacity);
+ return function(t) {
+ start.l = l(t);
+ start.a = a(t);
+ start.b = b(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+}
diff --git a/node_modules/d3-interpolate/src/number.js b/node_modules/d3-interpolate/src/number.js
new file mode 100644
index 00000000..837b13db
--- /dev/null
+++ b/node_modules/d3-interpolate/src/number.js
@@ -0,0 +1,5 @@
+export default function(a, b) {
+ return a = +a, b = +b, function(t) {
+ return a * (1 - t) + b * t;
+ };
+}
diff --git a/node_modules/d3-interpolate/src/numberArray.js b/node_modules/d3-interpolate/src/numberArray.js
new file mode 100644
index 00000000..4081086c
--- /dev/null
+++ b/node_modules/d3-interpolate/src/numberArray.js
@@ -0,0 +1,14 @@
+export default function(a, b) {
+ if (!b) b = [];
+ var n = a ? Math.min(b.length, a.length) : 0,
+ c = b.slice(),
+ i;
+ return function(t) {
+ for (i = 0; i < n; ++i) c[i] = a[i] * (1 - t) + b[i] * t;
+ return c;
+ };
+}
+
+export function isNumberArray(x) {
+ return ArrayBuffer.isView(x) && !(x instanceof DataView);
+}
diff --git a/node_modules/d3-interpolate/src/object.js b/node_modules/d3-interpolate/src/object.js
new file mode 100644
index 00000000..b521c337
--- /dev/null
+++ b/node_modules/d3-interpolate/src/object.js
@@ -0,0 +1,23 @@
+import value from "./value.js";
+
+export default function(a, b) {
+ var i = {},
+ c = {},
+ k;
+
+ if (a === null || typeof a !== "object") a = {};
+ if (b === null || typeof b !== "object") b = {};
+
+ for (k in b) {
+ if (k in a) {
+ i[k] = value(a[k], b[k]);
+ } else {
+ c[k] = b[k];
+ }
+ }
+
+ return function(t) {
+ for (k in i) c[k] = i[k](t);
+ return c;
+ };
+}
diff --git a/node_modules/d3-interpolate/src/piecewise.js b/node_modules/d3-interpolate/src/piecewise.js
new file mode 100644
index 00000000..8b568c5f
--- /dev/null
+++ b/node_modules/d3-interpolate/src/piecewise.js
@@ -0,0 +1,11 @@
+import {default as value} from "./value.js";
+
+export default function piecewise(interpolate, values) {
+ if (values === undefined) values = interpolate, interpolate = value;
+ var i = 0, n = values.length - 1, v = values[0], I = new Array(n < 0 ? 0 : n);
+ while (i < n) I[i] = interpolate(v, v = values[++i]);
+ return function(t) {
+ var i = Math.max(0, Math.min(n - 1, Math.floor(t *= n)));
+ return I[i](t - i);
+ };
+}
diff --git a/node_modules/d3-interpolate/src/quantize.js b/node_modules/d3-interpolate/src/quantize.js
new file mode 100644
index 00000000..d7c23e69
--- /dev/null
+++ b/node_modules/d3-interpolate/src/quantize.js
@@ -0,0 +1,5 @@
+export default function(interpolator, n) {
+ var samples = new Array(n);
+ for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1));
+ return samples;
+}
diff --git a/node_modules/d3-interpolate/src/rgb.js b/node_modules/d3-interpolate/src/rgb.js
new file mode 100644
index 00000000..495c1f8c
--- /dev/null
+++ b/node_modules/d3-interpolate/src/rgb.js
@@ -0,0 +1,55 @@
+import {rgb as colorRgb} from "d3-color";
+import basis from "./basis.js";
+import basisClosed from "./basisClosed.js";
+import nogamma, {gamma} from "./color.js";
+
+export default (function rgbGamma(y) {
+ var color = gamma(y);
+
+ function rgb(start, end) {
+ var r = color((start = colorRgb(start)).r, (end = colorRgb(end)).r),
+ g = color(start.g, end.g),
+ b = color(start.b, end.b),
+ opacity = nogamma(start.opacity, end.opacity);
+ return function(t) {
+ start.r = r(t);
+ start.g = g(t);
+ start.b = b(t);
+ start.opacity = opacity(t);
+ return start + "";
+ };
+ }
+
+ rgb.gamma = rgbGamma;
+
+ return rgb;
+})(1);
+
+function rgbSpline(spline) {
+ return function(colors) {
+ var n = colors.length,
+ r = new Array(n),
+ g = new Array(n),
+ b = new Array(n),
+ i, color;
+ for (i = 0; i < n; ++i) {
+ color = colorRgb(colors[i]);
+ r[i] = color.r || 0;
+ g[i] = color.g || 0;
+ b[i] = color.b || 0;
+ }
+ r = spline(r);
+ g = spline(g);
+ b = spline(b);
+ color.opacity = 1;
+ return function(t) {
+ color.r = r(t);
+ color.g = g(t);
+ color.b = b(t);
+ return color + "";
+ };
+ };
+}
+
+export var rgbBasis = rgbSpline(basis);
+export var rgbBasisClosed = rgbSpline(basisClosed);
diff --git a/node_modules/d3-interpolate/src/round.js b/node_modules/d3-interpolate/src/round.js
new file mode 100644
index 00000000..2635d28c
--- /dev/null
+++ b/node_modules/d3-interpolate/src/round.js
@@ -0,0 +1,5 @@
+export default function(a, b) {
+ return a = +a, b = +b, function(t) {
+ return Math.round(a * (1 - t) + b * t);
+ };
+}
diff --git a/node_modules/d3-interpolate/src/string.js b/node_modules/d3-interpolate/src/string.js
new file mode 100644
index 00000000..7f04d2d0
--- /dev/null
+++ b/node_modules/d3-interpolate/src/string.js
@@ -0,0 +1,64 @@
+import number from "./number.js";
+
+var reA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g,
+ reB = new RegExp(reA.source, "g");
+
+function zero(b) {
+ return function() {
+ return b;
+ };
+}
+
+function one(b) {
+ return function(t) {
+ return b(t) + "";
+ };
+}
+
+export default function(a, b) {
+ var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b
+ am, // current match in a
+ bm, // current match in b
+ bs, // string preceding current number in b, if any
+ i = -1, // index in s
+ s = [], // string constants and placeholders
+ q = []; // number interpolators
+
+ // Coerce inputs to strings.
+ a = a + "", b = b + "";
+
+ // Interpolate pairs of numbers in a & b.
+ while ((am = reA.exec(a))
+ && (bm = reB.exec(b))) {
+ if ((bs = bm.index) > bi) { // a string precedes the next number in b
+ bs = b.slice(bi, bs);
+ if (s[i]) s[i] += bs; // coalesce with previous string
+ else s[++i] = bs;
+ }
+ if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match
+ if (s[i]) s[i] += bm; // coalesce with previous string
+ else s[++i] = bm;
+ } else { // interpolate non-matching numbers
+ s[++i] = null;
+ q.push({i: i, x: number(am, bm)});
+ }
+ bi = reB.lastIndex;
+ }
+
+ // Add remains of b.
+ if (bi < b.length) {
+ bs = b.slice(bi);
+ if (s[i]) s[i] += bs; // coalesce with previous string
+ else s[++i] = bs;
+ }
+
+ // Special optimization for only a single match.
+ // Otherwise, interpolate each of the numbers and rejoin the string.
+ return s.length < 2 ? (q[0]
+ ? one(q[0].x)
+ : zero(b))
+ : (b = q.length, function(t) {
+ for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
+ return s.join("");
+ });
+}
diff --git a/node_modules/d3-interpolate/src/transform/decompose.js b/node_modules/d3-interpolate/src/transform/decompose.js
new file mode 100644
index 00000000..3535f231
--- /dev/null
+++ b/node_modules/d3-interpolate/src/transform/decompose.js
@@ -0,0 +1,26 @@
+var degrees = 180 / Math.PI;
+
+export var identity = {
+ translateX: 0,
+ translateY: 0,
+ rotate: 0,
+ skewX: 0,
+ scaleX: 1,
+ scaleY: 1
+};
+
+export default function(a, b, c, d, e, f) {
+ var scaleX, scaleY, skewX;
+ if (scaleX = Math.sqrt(a * a + b * b)) a /= scaleX, b /= scaleX;
+ if (skewX = a * c + b * d) c -= a * skewX, d -= b * skewX;
+ if (scaleY = Math.sqrt(c * c + d * d)) c /= scaleY, d /= scaleY, skewX /= scaleY;
+ if (a * d < b * c) a = -a, b = -b, skewX = -skewX, scaleX = -scaleX;
+ return {
+ translateX: e,
+ translateY: f,
+ rotate: Math.atan2(b, a) * degrees,
+ skewX: Math.atan(skewX) * degrees,
+ scaleX: scaleX,
+ scaleY: scaleY
+ };
+}
diff --git a/node_modules/d3-interpolate/src/transform/index.js b/node_modules/d3-interpolate/src/transform/index.js
new file mode 100644
index 00000000..5383d5f8
--- /dev/null
+++ b/node_modules/d3-interpolate/src/transform/index.js
@@ -0,0 +1,63 @@
+import number from "../number.js";
+import {parseCss, parseSvg} from "./parse.js";
+
+function interpolateTransform(parse, pxComma, pxParen, degParen) {
+
+ function pop(s) {
+ return s.length ? s.pop() + " " : "";
+ }
+
+ function translate(xa, ya, xb, yb, s, q) {
+ if (xa !== xb || ya !== yb) {
+ var i = s.push("translate(", null, pxComma, null, pxParen);
+ q.push({i: i - 4, x: number(xa, xb)}, {i: i - 2, x: number(ya, yb)});
+ } else if (xb || yb) {
+ s.push("translate(" + xb + pxComma + yb + pxParen);
+ }
+ }
+
+ function rotate(a, b, s, q) {
+ if (a !== b) {
+ if (a - b > 180) b += 360; else if (b - a > 180) a += 360; // shortest path
+ q.push({i: s.push(pop(s) + "rotate(", null, degParen) - 2, x: number(a, b)});
+ } else if (b) {
+ s.push(pop(s) + "rotate(" + b + degParen);
+ }
+ }
+
+ function skewX(a, b, s, q) {
+ if (a !== b) {
+ q.push({i: s.push(pop(s) + "skewX(", null, degParen) - 2, x: number(a, b)});
+ } else if (b) {
+ s.push(pop(s) + "skewX(" + b + degParen);
+ }
+ }
+
+ function scale(xa, ya, xb, yb, s, q) {
+ if (xa !== xb || ya !== yb) {
+ var i = s.push(pop(s) + "scale(", null, ",", null, ")");
+ q.push({i: i - 4, x: number(xa, xb)}, {i: i - 2, x: number(ya, yb)});
+ } else if (xb !== 1 || yb !== 1) {
+ s.push(pop(s) + "scale(" + xb + "," + yb + ")");
+ }
+ }
+
+ return function(a, b) {
+ var s = [], // string constants and placeholders
+ q = []; // number interpolators
+ a = parse(a), b = parse(b);
+ translate(a.translateX, a.translateY, b.translateX, b.translateY, s, q);
+ rotate(a.rotate, b.rotate, s, q);
+ skewX(a.skewX, b.skewX, s, q);
+ scale(a.scaleX, a.scaleY, b.scaleX, b.scaleY, s, q);
+ a = b = null; // gc
+ return function(t) {
+ var i = -1, n = q.length, o;
+ while (++i < n) s[(o = q[i]).i] = o.x(t);
+ return s.join("");
+ };
+ };
+}
+
+export var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)");
+export var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")");
diff --git a/node_modules/d3-interpolate/src/transform/parse.js b/node_modules/d3-interpolate/src/transform/parse.js
new file mode 100644
index 00000000..c62088e0
--- /dev/null
+++ b/node_modules/d3-interpolate/src/transform/parse.js
@@ -0,0 +1,18 @@
+import decompose, {identity} from "./decompose.js";
+
+var svgNode;
+
+/* eslint-disable no-undef */
+export function parseCss(value) {
+ const m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + "");
+ return m.isIdentity ? identity : decompose(m.a, m.b, m.c, m.d, m.e, m.f);
+}
+
+export function parseSvg(value) {
+ if (value == null) return identity;
+ if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g");
+ svgNode.setAttribute("transform", value);
+ if (!(value = svgNode.transform.baseVal.consolidate())) return identity;
+ value = value.matrix;
+ return decompose(value.a, value.b, value.c, value.d, value.e, value.f);
+}
diff --git a/node_modules/d3-interpolate/src/value.js b/node_modules/d3-interpolate/src/value.js
new file mode 100644
index 00000000..6a67ac4a
--- /dev/null
+++ b/node_modules/d3-interpolate/src/value.js
@@ -0,0 +1,22 @@
+import {color} from "d3-color";
+import rgb from "./rgb.js";
+import {genericArray} from "./array.js";
+import date from "./date.js";
+import number from "./number.js";
+import object from "./object.js";
+import string from "./string.js";
+import constant from "./constant.js";
+import numberArray, {isNumberArray} from "./numberArray.js";
+
+export default function(a, b) {
+ var t = typeof b, c;
+ return b == null || t === "boolean" ? constant(b)
+ : (t === "number" ? number
+ : t === "string" ? ((c = color(b)) ? (b = c, rgb) : string)
+ : b instanceof color ? rgb
+ : b instanceof Date ? date
+ : isNumberArray(b) ? numberArray
+ : Array.isArray(b) ? genericArray
+ : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object
+ : number)(a, b);
+}
diff --git a/node_modules/d3-interpolate/src/zoom.js b/node_modules/d3-interpolate/src/zoom.js
new file mode 100644
index 00000000..f2756026
--- /dev/null
+++ b/node_modules/d3-interpolate/src/zoom.js
@@ -0,0 +1,71 @@
+var epsilon2 = 1e-12;
+
+function cosh(x) {
+ return ((x = Math.exp(x)) + 1 / x) / 2;
+}
+
+function sinh(x) {
+ return ((x = Math.exp(x)) - 1 / x) / 2;
+}
+
+function tanh(x) {
+ return ((x = Math.exp(2 * x)) - 1) / (x + 1);
+}
+
+export default (function zoomRho(rho, rho2, rho4) {
+
+ // p0 = [ux0, uy0, w0]
+ // p1 = [ux1, uy1, w1]
+ function zoom(p0, p1) {
+ var ux0 = p0[0], uy0 = p0[1], w0 = p0[2],
+ ux1 = p1[0], uy1 = p1[1], w1 = p1[2],
+ dx = ux1 - ux0,
+ dy = uy1 - uy0,
+ d2 = dx * dx + dy * dy,
+ i,
+ S;
+
+ // Special case for u0 ≅ u1.
+ if (d2 < epsilon2) {
+ S = Math.log(w1 / w0) / rho;
+ i = function(t) {
+ return [
+ ux0 + t * dx,
+ uy0 + t * dy,
+ w0 * Math.exp(rho * t * S)
+ ];
+ }
+ }
+
+ // General case.
+ else {
+ var d1 = Math.sqrt(d2),
+ b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),
+ b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),
+ r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),
+ r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+ S = (r1 - r0) / rho;
+ i = function(t) {
+ var s = t * S,
+ coshr0 = cosh(r0),
+ u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));
+ return [
+ ux0 + u * dx,
+ uy0 + u * dy,
+ w0 * coshr0 / cosh(rho * s + r0)
+ ];
+ }
+ }
+
+ i.duration = S * 1000 * rho / Math.SQRT2;
+
+ return i;
+ }
+
+ zoom.rho = function(_) {
+ var _1 = Math.max(1e-3, +_), _2 = _1 * _1, _4 = _2 * _2;
+ return zoomRho(_1, _2, _4);
+ };
+
+ return zoom;
+})(Math.SQRT2, 2, 4);
diff --git a/node_modules/d3-path/LICENSE b/node_modules/d3-path/LICENSE
new file mode 100644
index 00000000..76cb4be4
--- /dev/null
+++ b/node_modules/d3-path/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2015-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-path/README.md b/node_modules/d3-path/README.md
new file mode 100644
index 00000000..768ea95f
--- /dev/null
+++ b/node_modules/d3-path/README.md
@@ -0,0 +1,90 @@
+# d3-path
+
+Say you have some code that draws to a 2D canvas:
+
+```js
+function drawCircle(context, radius) {
+ context.moveTo(radius, 0);
+ context.arc(0, 0, radius, 0, 2 * Math.PI);
+}
+```
+
+The d3-path module lets you take this exact code and additionally render to [SVG](http://www.w3.org/TR/SVG/paths.html). It works by [serializing](#path_toString) [CanvasPathMethods](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls to [SVG path data](http://www.w3.org/TR/SVG/paths.html#PathData). For example:
+
+```js
+const context = d3.path();
+drawCircle(context, 40);
+pathElement.setAttribute("d", context.toString());
+```
+
+Now code you write once can be used with both Canvas (for performance) and SVG (for convenience). For a practical example, see [d3-shape](https://github.com/d3/d3-shape).
+
+## Installing
+
+If you use npm, `npm install d3-path`. You can also download the [latest release on GitHub](https://github.com/d3/d3-path/releases/latest). In modern browsers, you can import d3-path from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-path’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+# d3.path () · [Source](https://github.com/d3/d3-path/blob/master/src/path.js), [Examples](https://observablehq.com/@d3/d3-path)
+
+Constructs a new path serializer that implements [CanvasPathMethods](http://www.w3.org/TR/2dcontext/#canvaspathmethods).
+
+# path .moveTo (x , y )
+
+Move to the specified point ⟨*x*, *y*⟩. Equivalent to [*context*.moveTo](http://www.w3.org/TR/2dcontext/#dom-context-2d-moveto) and SVG’s [“moveto” command](http://www.w3.org/TR/SVG/paths.html#PathDataMovetoCommands).
+
+# path .closePath ()
+
+Ends the current subpath and causes an automatic straight line to be drawn from the current point to the initial point of the current subpath. Equivalent to [*context*.closePath](http://www.w3.org/TR/2dcontext/#dom-context-2d-closepath) and SVG’s [“closepath” command](http://www.w3.org/TR/SVG/paths.html#PathDataClosePathCommand).
+
+# path .lineTo (x , y )
+
+Draws a straight line from the current point to the specified point ⟨*x*, *y*⟩. Equivalent to [*context*.lineTo](http://www.w3.org/TR/2dcontext/#dom-context-2d-lineto) and SVG’s [“lineto” command](http://www.w3.org/TR/SVG/paths.html#PathDataLinetoCommands).
+
+# path .quadraticCurveTo (cpx , cpy , x , y )
+
+Draws a quadratic Bézier segment from the current point to the specified point ⟨*x*, *y*⟩, with the specified control point ⟨*cpx*, *cpy*⟩. Equivalent to [*context*.quadraticCurveTo](http://www.w3.org/TR/2dcontext/#dom-context-2d-quadraticcurveto) and SVG’s [quadratic Bézier curve commands](http://www.w3.org/TR/SVG/paths.html#PathDataQuadraticBezierCommands).
+
+# path .bezierCurveTo (cpx1 , cpy1 , cpx2 , cpy2 , x , y )
+
+Draws a cubic Bézier segment from the current point to the specified point ⟨*x*, *y*⟩, with the specified control points ⟨*cpx1*, *cpy1*⟩ and ⟨*cpx2*, *cpy2*⟩. Equivalent to [*context*.bezierCurveTo](http://www.w3.org/TR/2dcontext/#dom-context-2d-beziercurveto) and SVG’s [cubic Bézier curve commands](http://www.w3.org/TR/SVG/paths.html#PathDataCubicBezierCommands).
+
+# path .arcTo (x1 , y1 , x2 , y2 , radius )
+
+Draws a circular arc segment with the specified *radius* that starts tangent to the line between the current point and the specified point ⟨*x1*, *y1*⟩ and ends tangent to the line between the specified points ⟨*x1*, *y1*⟩ and ⟨*x2*, *y2*⟩. If the first tangent point is not equal to the current point, a straight line is drawn between the current point and the first tangent point. Equivalent to [*context*.arcTo](http://www.w3.org/TR/2dcontext/#dom-context-2d-arcto) and uses SVG’s [elliptical arc curve commands](http://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands).
+
+# path .arc (x , y , radius , startAngle , endAngle [, anticlockwise ])
+
+Draws a circular arc segment with the specified center ⟨*x*, *y*⟩, *radius*, *startAngle* and *endAngle*. If *anticlockwise* is true, the arc is drawn in the anticlockwise direction; otherwise, it is drawn in the clockwise direction. If the current point is not equal to the starting point of the arc, a straight line is drawn from the current point to the start of the arc. Equivalent to [*context*.arc](http://www.w3.org/TR/2dcontext/#dom-context-2d-arc) and uses SVG’s [elliptical arc curve commands](http://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands).
+
+# path .rect (x , y , w , h )
+
+Creates a new subpath containing just the four points ⟨*x*, *y*⟩, ⟨*x* + *w*, *y*⟩, ⟨*x* + *w*, *y* + *h*⟩, ⟨*x*, *y* + *h*⟩, with those four points connected by straight lines, and then marks the subpath as closed. Equivalent to [*context*.rect](http://www.w3.org/TR/2dcontext/#dom-context-2d-rect) and uses SVG’s [“lineto” commands](http://www.w3.org/TR/SVG/paths.html#PathDataLinetoCommands).
+
+# path .toString ()
+
+Returns the string representation of this *path* according to SVG’s [path data specification](http://www.w3.org/TR/SVG/paths.html#PathData).
diff --git a/node_modules/d3-path/dist/d3-path.js b/node_modules/d3-path/dist/d3-path.js
new file mode 100644
index 00000000..6227ffd2
--- /dev/null
+++ b/node_modules/d3-path/dist/d3-path.js
@@ -0,0 +1,141 @@
+// https://d3js.org/d3-path/ v3.0.1 Copyright 2015-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+const pi = Math.PI,
+ tau = 2 * pi,
+ epsilon = 1e-6,
+ tauEpsilon = tau - epsilon;
+
+function Path() {
+ this._x0 = this._y0 = // start of current subpath
+ this._x1 = this._y1 = null; // end of current subpath
+ this._ = "";
+}
+
+function path() {
+ return new Path;
+}
+
+Path.prototype = path.prototype = {
+ constructor: Path,
+ moveTo: function(x, y) {
+ this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y);
+ },
+ closePath: function() {
+ if (this._x1 !== null) {
+ this._x1 = this._x0, this._y1 = this._y0;
+ this._ += "Z";
+ }
+ },
+ lineTo: function(x, y) {
+ this._ += "L" + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ quadraticCurveTo: function(x1, y1, x, y) {
+ this._ += "Q" + (+x1) + "," + (+y1) + "," + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ bezierCurveTo: function(x1, y1, x2, y2, x, y) {
+ this._ += "C" + (+x1) + "," + (+y1) + "," + (+x2) + "," + (+y2) + "," + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ arcTo: function(x1, y1, x2, y2, r) {
+ x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r;
+ var x0 = this._x1,
+ y0 = this._y1,
+ x21 = x2 - x1,
+ y21 = y2 - y1,
+ x01 = x0 - x1,
+ y01 = y0 - y1,
+ l01_2 = x01 * x01 + y01 * y01;
+
+ // Is the radius negative? Error.
+ if (r < 0) throw new Error("negative radius: " + r);
+
+ // Is this path empty? Move to (x1,y1).
+ if (this._x1 === null) {
+ this._ += "M" + (this._x1 = x1) + "," + (this._y1 = y1);
+ }
+
+ // Or, is (x1,y1) coincident with (x0,y0)? Do nothing.
+ else if (!(l01_2 > epsilon));
+
+ // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear?
+ // Equivalently, is (x1,y1) coincident with (x2,y2)?
+ // Or, is the radius zero? Line to (x1,y1).
+ else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon) || !r) {
+ this._ += "L" + (this._x1 = x1) + "," + (this._y1 = y1);
+ }
+
+ // Otherwise, draw an arc!
+ else {
+ var x20 = x2 - x0,
+ y20 = y2 - y0,
+ l21_2 = x21 * x21 + y21 * y21,
+ l20_2 = x20 * x20 + y20 * y20,
+ l21 = Math.sqrt(l21_2),
+ l01 = Math.sqrt(l01_2),
+ l = r * Math.tan((pi - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2),
+ t01 = l / l01,
+ t21 = l / l21;
+
+ // If the start tangent is not coincident with (x0,y0), line to.
+ if (Math.abs(t01 - 1) > epsilon) {
+ this._ += "L" + (x1 + t01 * x01) + "," + (y1 + t01 * y01);
+ }
+
+ this._ += "A" + r + "," + r + ",0,0," + (+(y01 * x20 > x01 * y20)) + "," + (this._x1 = x1 + t21 * x21) + "," + (this._y1 = y1 + t21 * y21);
+ }
+ },
+ arc: function(x, y, r, a0, a1, ccw) {
+ x = +x, y = +y, r = +r, ccw = !!ccw;
+ var dx = r * Math.cos(a0),
+ dy = r * Math.sin(a0),
+ x0 = x + dx,
+ y0 = y + dy,
+ cw = 1 ^ ccw,
+ da = ccw ? a0 - a1 : a1 - a0;
+
+ // Is the radius negative? Error.
+ if (r < 0) throw new Error("negative radius: " + r);
+
+ // Is this path empty? Move to (x0,y0).
+ if (this._x1 === null) {
+ this._ += "M" + x0 + "," + y0;
+ }
+
+ // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0).
+ else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) {
+ this._ += "L" + x0 + "," + y0;
+ }
+
+ // Is this arc empty? We’re done.
+ if (!r) return;
+
+ // Does the angle go the wrong way? Flip the direction.
+ if (da < 0) da = da % tau + tau;
+
+ // Is this a complete circle? Draw two arcs to complete the circle.
+ if (da > tauEpsilon) {
+ this._ += "A" + r + "," + r + ",0,1," + cw + "," + (x - dx) + "," + (y - dy) + "A" + r + "," + r + ",0,1," + cw + "," + (this._x1 = x0) + "," + (this._y1 = y0);
+ }
+
+ // Is this arc non-empty? Draw an arc!
+ else if (da > epsilon) {
+ this._ += "A" + r + "," + r + ",0," + (+(da >= pi)) + "," + cw + "," + (this._x1 = x + r * Math.cos(a1)) + "," + (this._y1 = y + r * Math.sin(a1));
+ }
+ },
+ rect: function(x, y, w, h) {
+ this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y) + "h" + (+w) + "v" + (+h) + "h" + (-w) + "Z";
+ },
+ toString: function() {
+ return this._;
+ }
+};
+
+exports.path = path;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-path/dist/d3-path.min.js b/node_modules/d3-path/dist/d3-path.min.js
new file mode 100644
index 00000000..db7d1f4c
--- /dev/null
+++ b/node_modules/d3-path/dist/d3-path.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-path/ v3.0.1 Copyright 2015-2021 Mike Bostock
+!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";const i=Math.PI,s=2*i,h=1e-6,_=s-h;function e(){this._x0=this._y0=this._x1=this._y1=null,this._=""}function n(){return new e}e.prototype=n.prototype={constructor:e,moveTo:function(t,i){this._+="M"+(this._x0=this._x1=+t)+","+(this._y0=this._y1=+i)},closePath:function(){null!==this._x1&&(this._x1=this._x0,this._y1=this._y0,this._+="Z")},lineTo:function(t,i){this._+="L"+(this._x1=+t)+","+(this._y1=+i)},quadraticCurveTo:function(t,i,s,h){this._+="Q"+ +t+","+ +i+","+(this._x1=+s)+","+(this._y1=+h)},bezierCurveTo:function(t,i,s,h,_,e){this._+="C"+ +t+","+ +i+","+ +s+","+ +h+","+(this._x1=+_)+","+(this._y1=+e)},arcTo:function(t,s,_,e,n){t=+t,s=+s,_=+_,e=+e,n=+n;var o=this._x1,r=this._y1,a=_-t,u=e-s,f=o-t,c=r-s,y=f*f+c*c;if(n<0)throw new Error("negative radius: "+n);if(null===this._x1)this._+="M"+(this._x1=t)+","+(this._y1=s);else if(y>h)if(Math.abs(c*a-u*f)>h&&n){var x=_-o,l=e-r,M=a*a+u*u,d=x*x+l*l,p=Math.sqrt(M),v=Math.sqrt(y),b=n*Math.tan((i-Math.acos((M+y-d)/(2*p*v)))/2),T=b/v,g=b/p;Math.abs(T-1)>h&&(this._+="L"+(t+T*f)+","+(s+T*c)),this._+="A"+n+","+n+",0,0,"+ +(c*x>f*l)+","+(this._x1=t+g*a)+","+(this._y1=s+g*u)}else this._+="L"+(this._x1=t)+","+(this._y1=s);else;},arc:function(t,e,n,o,r,a){t=+t,e=+e,a=!!a;var u=(n=+n)*Math.cos(o),f=n*Math.sin(o),c=t+u,y=e+f,x=1^a,l=a?o-r:r-o;if(n<0)throw new Error("negative radius: "+n);null===this._x1?this._+="M"+c+","+y:(Math.abs(this._x1-c)>h||Math.abs(this._y1-y)>h)&&(this._+="L"+c+","+y),n&&(l<0&&(l=l%s+s),l>_?this._+="A"+n+","+n+",0,1,"+x+","+(t-u)+","+(e-f)+"A"+n+","+n+",0,1,"+x+","+(this._x1=c)+","+(this._y1=y):l>h&&(this._+="A"+n+","+n+",0,"+ +(l>=i)+","+x+","+(this._x1=t+n*Math.cos(r))+","+(this._y1=e+n*Math.sin(r))))},rect:function(t,i,s,h){this._+="M"+(this._x0=this._x1=+t)+","+(this._y0=this._y1=+i)+"h"+ +s+"v"+ +h+"h"+-s+"Z"},toString:function(){return this._}},t.path=n,Object.defineProperty(t,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-path/package.json b/node_modules/d3-path/package.json
new file mode 100644
index 00000000..a060f8de
--- /dev/null
+++ b/node_modules/d3-path/package.json
@@ -0,0 +1,84 @@
+{
+ "_from": "d3-path@3",
+ "_id": "d3-path@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-gq6gZom9AFZby0YLduxT1qmrp4xpBA1YZr19OI717WIdKE2OM5ETq5qrHLb301IgxhLwcuxvGZVLeeWc/k1I6w==",
+ "_location": "/d3-path",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-path@3",
+ "name": "d3-path",
+ "escapedName": "d3-path",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-chord",
+ "/d3-shape"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-path/-/d3-path-3.0.1.tgz",
+ "_shasum": "f09dec0aaffd770b7995f1a399152bf93052321e",
+ "_spec": "d3-path@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-path/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Serialize Canvas path commands to SVG.",
+ "devDependencies": {
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-path.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-path/",
+ "jsdelivr": "dist/d3-path.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "canvas",
+ "path",
+ "svg",
+ "graphics",
+ "CanvasRenderingContext2D",
+ "CanvasPathMethods",
+ "Path2D"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-path",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-path.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-path.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-path/src/index.js b/node_modules/d3-path/src/index.js
new file mode 100644
index 00000000..968e6e58
--- /dev/null
+++ b/node_modules/d3-path/src/index.js
@@ -0,0 +1 @@
+export {default as path} from "./path.js";
diff --git a/node_modules/d3-path/src/path.js b/node_modules/d3-path/src/path.js
new file mode 100644
index 00000000..28f1f666
--- /dev/null
+++ b/node_modules/d3-path/src/path.js
@@ -0,0 +1,130 @@
+const pi = Math.PI,
+ tau = 2 * pi,
+ epsilon = 1e-6,
+ tauEpsilon = tau - epsilon;
+
+function Path() {
+ this._x0 = this._y0 = // start of current subpath
+ this._x1 = this._y1 = null; // end of current subpath
+ this._ = "";
+}
+
+function path() {
+ return new Path;
+}
+
+Path.prototype = path.prototype = {
+ constructor: Path,
+ moveTo: function(x, y) {
+ this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y);
+ },
+ closePath: function() {
+ if (this._x1 !== null) {
+ this._x1 = this._x0, this._y1 = this._y0;
+ this._ += "Z";
+ }
+ },
+ lineTo: function(x, y) {
+ this._ += "L" + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ quadraticCurveTo: function(x1, y1, x, y) {
+ this._ += "Q" + (+x1) + "," + (+y1) + "," + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ bezierCurveTo: function(x1, y1, x2, y2, x, y) {
+ this._ += "C" + (+x1) + "," + (+y1) + "," + (+x2) + "," + (+y2) + "," + (this._x1 = +x) + "," + (this._y1 = +y);
+ },
+ arcTo: function(x1, y1, x2, y2, r) {
+ x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r;
+ var x0 = this._x1,
+ y0 = this._y1,
+ x21 = x2 - x1,
+ y21 = y2 - y1,
+ x01 = x0 - x1,
+ y01 = y0 - y1,
+ l01_2 = x01 * x01 + y01 * y01;
+
+ // Is the radius negative? Error.
+ if (r < 0) throw new Error("negative radius: " + r);
+
+ // Is this path empty? Move to (x1,y1).
+ if (this._x1 === null) {
+ this._ += "M" + (this._x1 = x1) + "," + (this._y1 = y1);
+ }
+
+ // Or, is (x1,y1) coincident with (x0,y0)? Do nothing.
+ else if (!(l01_2 > epsilon));
+
+ // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear?
+ // Equivalently, is (x1,y1) coincident with (x2,y2)?
+ // Or, is the radius zero? Line to (x1,y1).
+ else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon) || !r) {
+ this._ += "L" + (this._x1 = x1) + "," + (this._y1 = y1);
+ }
+
+ // Otherwise, draw an arc!
+ else {
+ var x20 = x2 - x0,
+ y20 = y2 - y0,
+ l21_2 = x21 * x21 + y21 * y21,
+ l20_2 = x20 * x20 + y20 * y20,
+ l21 = Math.sqrt(l21_2),
+ l01 = Math.sqrt(l01_2),
+ l = r * Math.tan((pi - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2),
+ t01 = l / l01,
+ t21 = l / l21;
+
+ // If the start tangent is not coincident with (x0,y0), line to.
+ if (Math.abs(t01 - 1) > epsilon) {
+ this._ += "L" + (x1 + t01 * x01) + "," + (y1 + t01 * y01);
+ }
+
+ this._ += "A" + r + "," + r + ",0,0," + (+(y01 * x20 > x01 * y20)) + "," + (this._x1 = x1 + t21 * x21) + "," + (this._y1 = y1 + t21 * y21);
+ }
+ },
+ arc: function(x, y, r, a0, a1, ccw) {
+ x = +x, y = +y, r = +r, ccw = !!ccw;
+ var dx = r * Math.cos(a0),
+ dy = r * Math.sin(a0),
+ x0 = x + dx,
+ y0 = y + dy,
+ cw = 1 ^ ccw,
+ da = ccw ? a0 - a1 : a1 - a0;
+
+ // Is the radius negative? Error.
+ if (r < 0) throw new Error("negative radius: " + r);
+
+ // Is this path empty? Move to (x0,y0).
+ if (this._x1 === null) {
+ this._ += "M" + x0 + "," + y0;
+ }
+
+ // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0).
+ else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) {
+ this._ += "L" + x0 + "," + y0;
+ }
+
+ // Is this arc empty? We’re done.
+ if (!r) return;
+
+ // Does the angle go the wrong way? Flip the direction.
+ if (da < 0) da = da % tau + tau;
+
+ // Is this a complete circle? Draw two arcs to complete the circle.
+ if (da > tauEpsilon) {
+ this._ += "A" + r + "," + r + ",0,1," + cw + "," + (x - dx) + "," + (y - dy) + "A" + r + "," + r + ",0,1," + cw + "," + (this._x1 = x0) + "," + (this._y1 = y0);
+ }
+
+ // Is this arc non-empty? Draw an arc!
+ else if (da > epsilon) {
+ this._ += "A" + r + "," + r + ",0," + (+(da >= pi)) + "," + cw + "," + (this._x1 = x + r * Math.cos(a1)) + "," + (this._y1 = y + r * Math.sin(a1));
+ }
+ },
+ rect: function(x, y, w, h) {
+ this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y) + "h" + (+w) + "v" + (+h) + "h" + (-w) + "Z";
+ },
+ toString: function() {
+ return this._;
+ }
+};
+
+export default path;
diff --git a/node_modules/d3-polygon/LICENSE b/node_modules/d3-polygon/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-polygon/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-polygon/README.md b/node_modules/d3-polygon/README.md
new file mode 100644
index 00000000..ecdc791d
--- /dev/null
+++ b/node_modules/d3-polygon/README.md
@@ -0,0 +1,52 @@
+# d3-polygon
+
+This module provides a few basic geometric operations for two-dimensional polygons. Each polygon is represented as an array of two-element arrays [[x1 , y1 ], [x2 , y2 ], …], and may either be closed (wherein the first and last point are the same) or open (wherein they are not). Typically polygons are in counterclockwise order, assuming a coordinate system where the origin ⟨0,0⟩ is in the top-left corner.
+
+## Installing
+
+If you use npm, `npm install d3-polygon`. You can also download the [latest release on GitHub](https://github.com/d3/d3-polygon/releases/latest). For vanilla HTML in modern browsers, import d3-polygon from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-polygon’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+# d3.polygonArea (polygon ) [<>](https://github.com/d3/d3-polygon/blob/master/src/area.js "Source Code")
+
+Returns the signed area of the specified *polygon*. If the vertices of the polygon are in counterclockwise order (assuming a coordinate system where the origin ⟨0,0⟩ is in the top-left corner), the returned area is positive; otherwise it is negative, or zero.
+
+# d3.polygonCentroid (polygon ) [<>](https://github.com/d3/d3-polygon/blob/master/src/centroid.js "Source Code")
+
+Returns the [centroid](https://en.wikipedia.org/wiki/Centroid) of the specified *polygon*.
+
+# d3.polygonHull (points ) [<>](https://github.com/d3/d3-polygon/blob/master/src/hull.js#L23 "Source Code")
+
+# d3.polygonContains (polygon , point ) [<>](https://github.com/d3/d3-polygon/blob/master/src/contains.js "Source Code")
+
+Returns true if and only if the specified *point* is inside the specified *polygon*.
+
+# d3.polygonLength (polygon ) [<>](https://github.com/d3/d3-polygon/blob/master/src/length.js "Source Code")
+
+Returns the length of the perimeter of the specified *polygon*.
diff --git a/node_modules/d3-polygon/dist/d3-polygon.js b/node_modules/d3-polygon/dist/d3-polygon.js
new file mode 100644
index 00000000..33ba08b5
--- /dev/null
+++ b/node_modules/d3-polygon/dist/d3-polygon.js
@@ -0,0 +1,150 @@
+// https://d3js.org/d3-polygon/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+function area(polygon) {
+ var i = -1,
+ n = polygon.length,
+ a,
+ b = polygon[n - 1],
+ area = 0;
+
+ while (++i < n) {
+ a = b;
+ b = polygon[i];
+ area += a[1] * b[0] - a[0] * b[1];
+ }
+
+ return area / 2;
+}
+
+function centroid(polygon) {
+ var i = -1,
+ n = polygon.length,
+ x = 0,
+ y = 0,
+ a,
+ b = polygon[n - 1],
+ c,
+ k = 0;
+
+ while (++i < n) {
+ a = b;
+ b = polygon[i];
+ k += c = a[0] * b[1] - b[0] * a[1];
+ x += (a[0] + b[0]) * c;
+ y += (a[1] + b[1]) * c;
+ }
+
+ return k *= 3, [x / k, y / k];
+}
+
+// Returns the 2D cross product of AB and AC vectors, i.e., the z-component of
+// the 3D cross product in a quadrant I Cartesian coordinate system (+x is
+// right, +y is up). Returns a positive value if ABC is counter-clockwise,
+// negative if clockwise, and zero if the points are collinear.
+function cross(a, b, c) {
+ return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+}
+
+function lexicographicOrder(a, b) {
+ return a[0] - b[0] || a[1] - b[1];
+}
+
+// Computes the upper convex hull per the monotone chain algorithm.
+// Assumes points.length >= 3, is sorted by x, unique in y.
+// Returns an array of indices into points in left-to-right order.
+function computeUpperHullIndexes(points) {
+ const n = points.length,
+ indexes = [0, 1];
+ let size = 2, i;
+
+ for (i = 2; i < n; ++i) {
+ while (size > 1 && cross(points[indexes[size - 2]], points[indexes[size - 1]], points[i]) <= 0) --size;
+ indexes[size++] = i;
+ }
+
+ return indexes.slice(0, size); // remove popped points
+}
+
+function hull(points) {
+ if ((n = points.length) < 3) return null;
+
+ var i,
+ n,
+ sortedPoints = new Array(n),
+ flippedPoints = new Array(n);
+
+ for (i = 0; i < n; ++i) sortedPoints[i] = [+points[i][0], +points[i][1], i];
+ sortedPoints.sort(lexicographicOrder);
+ for (i = 0; i < n; ++i) flippedPoints[i] = [sortedPoints[i][0], -sortedPoints[i][1]];
+
+ var upperIndexes = computeUpperHullIndexes(sortedPoints),
+ lowerIndexes = computeUpperHullIndexes(flippedPoints);
+
+ // Construct the hull polygon, removing possible duplicate endpoints.
+ var skipLeft = lowerIndexes[0] === upperIndexes[0],
+ skipRight = lowerIndexes[lowerIndexes.length - 1] === upperIndexes[upperIndexes.length - 1],
+ hull = [];
+
+ // Add upper hull in right-to-l order.
+ // Then add lower hull in left-to-right order.
+ for (i = upperIndexes.length - 1; i >= 0; --i) hull.push(points[sortedPoints[upperIndexes[i]][2]]);
+ for (i = +skipLeft; i < lowerIndexes.length - skipRight; ++i) hull.push(points[sortedPoints[lowerIndexes[i]][2]]);
+
+ return hull;
+}
+
+function contains(polygon, point) {
+ var n = polygon.length,
+ p = polygon[n - 1],
+ x = point[0], y = point[1],
+ x0 = p[0], y0 = p[1],
+ x1, y1,
+ inside = false;
+
+ for (var i = 0; i < n; ++i) {
+ p = polygon[i], x1 = p[0], y1 = p[1];
+ if (((y1 > y) !== (y0 > y)) && (x < (x0 - x1) * (y - y1) / (y0 - y1) + x1)) inside = !inside;
+ x0 = x1, y0 = y1;
+ }
+
+ return inside;
+}
+
+function length(polygon) {
+ var i = -1,
+ n = polygon.length,
+ b = polygon[n - 1],
+ xa,
+ ya,
+ xb = b[0],
+ yb = b[1],
+ perimeter = 0;
+
+ while (++i < n) {
+ xa = xb;
+ ya = yb;
+ b = polygon[i];
+ xb = b[0];
+ yb = b[1];
+ xa -= xb;
+ ya -= yb;
+ perimeter += Math.hypot(xa, ya);
+ }
+
+ return perimeter;
+}
+
+exports.polygonArea = area;
+exports.polygonCentroid = centroid;
+exports.polygonContains = contains;
+exports.polygonHull = hull;
+exports.polygonLength = length;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-polygon/dist/d3-polygon.min.js b/node_modules/d3-polygon/dist/d3-polygon.min.js
new file mode 100644
index 00000000..38fcfc32
--- /dev/null
+++ b/node_modules/d3-polygon/dist/d3-polygon.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-polygon/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(n,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{})}(this,(function(n){"use strict";function e(n,e){return n[0]-e[0]||n[1]-e[1]}function t(n){const e=n.length,t=[0,1];let o,r=2;for(o=2;o1&&(f=n[t[r-2]],l=n[t[r-1]],u=n[o],(l[0]-f[0])*(u[1]-f[1])-(l[1]-f[1])*(u[0]-f[0])<=0);)--r;t[r++]=o}var f,l,u;return t.slice(0,r)}n.polygonArea=function(n){for(var e,t=-1,o=n.length,r=n[o-1],f=0;++tu!=g>u&&l<(i-t)*(u-o)/(g-o)+t&&(h=!h),i=t,g=o;return h},n.polygonHull=function(n){if((r=n.length)<3)return null;var o,r,f=new Array(r),l=new Array(r);for(o=0;o=0;--o)a.push(n[f[u[o]][2]]);for(o=+g;o=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-polygon.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-polygon/",
+ "jsdelivr": "dist/d3-polygon.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "polygon",
+ "hull",
+ "geometry",
+ "graphics"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-polygon",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-polygon.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-polygon.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-polygon/src/area.js b/node_modules/d3-polygon/src/area.js
new file mode 100644
index 00000000..109efb48
--- /dev/null
+++ b/node_modules/d3-polygon/src/area.js
@@ -0,0 +1,15 @@
+export default function(polygon) {
+ var i = -1,
+ n = polygon.length,
+ a,
+ b = polygon[n - 1],
+ area = 0;
+
+ while (++i < n) {
+ a = b;
+ b = polygon[i];
+ area += a[1] * b[0] - a[0] * b[1];
+ }
+
+ return area / 2;
+}
diff --git a/node_modules/d3-polygon/src/centroid.js b/node_modules/d3-polygon/src/centroid.js
new file mode 100644
index 00000000..6c8ece1f
--- /dev/null
+++ b/node_modules/d3-polygon/src/centroid.js
@@ -0,0 +1,20 @@
+export default function(polygon) {
+ var i = -1,
+ n = polygon.length,
+ x = 0,
+ y = 0,
+ a,
+ b = polygon[n - 1],
+ c,
+ k = 0;
+
+ while (++i < n) {
+ a = b;
+ b = polygon[i];
+ k += c = a[0] * b[1] - b[0] * a[1];
+ x += (a[0] + b[0]) * c;
+ y += (a[1] + b[1]) * c;
+ }
+
+ return k *= 3, [x / k, y / k];
+}
diff --git a/node_modules/d3-polygon/src/contains.js b/node_modules/d3-polygon/src/contains.js
new file mode 100644
index 00000000..a0beabca
--- /dev/null
+++ b/node_modules/d3-polygon/src/contains.js
@@ -0,0 +1,16 @@
+export default function(polygon, point) {
+ var n = polygon.length,
+ p = polygon[n - 1],
+ x = point[0], y = point[1],
+ x0 = p[0], y0 = p[1],
+ x1, y1,
+ inside = false;
+
+ for (var i = 0; i < n; ++i) {
+ p = polygon[i], x1 = p[0], y1 = p[1];
+ if (((y1 > y) !== (y0 > y)) && (x < (x0 - x1) * (y - y1) / (y0 - y1) + x1)) inside = !inside;
+ x0 = x1, y0 = y1;
+ }
+
+ return inside;
+}
diff --git a/node_modules/d3-polygon/src/cross.js b/node_modules/d3-polygon/src/cross.js
new file mode 100644
index 00000000..11a6df07
--- /dev/null
+++ b/node_modules/d3-polygon/src/cross.js
@@ -0,0 +1,7 @@
+// Returns the 2D cross product of AB and AC vectors, i.e., the z-component of
+// the 3D cross product in a quadrant I Cartesian coordinate system (+x is
+// right, +y is up). Returns a positive value if ABC is counter-clockwise,
+// negative if clockwise, and zero if the points are collinear.
+export default function(a, b, c) {
+ return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
+}
diff --git a/node_modules/d3-polygon/src/hull.js b/node_modules/d3-polygon/src/hull.js
new file mode 100644
index 00000000..daaf9a51
--- /dev/null
+++ b/node_modules/d3-polygon/src/hull.js
@@ -0,0 +1,49 @@
+import cross from "./cross.js";
+
+function lexicographicOrder(a, b) {
+ return a[0] - b[0] || a[1] - b[1];
+}
+
+// Computes the upper convex hull per the monotone chain algorithm.
+// Assumes points.length >= 3, is sorted by x, unique in y.
+// Returns an array of indices into points in left-to-right order.
+function computeUpperHullIndexes(points) {
+ const n = points.length,
+ indexes = [0, 1];
+ let size = 2, i;
+
+ for (i = 2; i < n; ++i) {
+ while (size > 1 && cross(points[indexes[size - 2]], points[indexes[size - 1]], points[i]) <= 0) --size;
+ indexes[size++] = i;
+ }
+
+ return indexes.slice(0, size); // remove popped points
+}
+
+export default function(points) {
+ if ((n = points.length) < 3) return null;
+
+ var i,
+ n,
+ sortedPoints = new Array(n),
+ flippedPoints = new Array(n);
+
+ for (i = 0; i < n; ++i) sortedPoints[i] = [+points[i][0], +points[i][1], i];
+ sortedPoints.sort(lexicographicOrder);
+ for (i = 0; i < n; ++i) flippedPoints[i] = [sortedPoints[i][0], -sortedPoints[i][1]];
+
+ var upperIndexes = computeUpperHullIndexes(sortedPoints),
+ lowerIndexes = computeUpperHullIndexes(flippedPoints);
+
+ // Construct the hull polygon, removing possible duplicate endpoints.
+ var skipLeft = lowerIndexes[0] === upperIndexes[0],
+ skipRight = lowerIndexes[lowerIndexes.length - 1] === upperIndexes[upperIndexes.length - 1],
+ hull = [];
+
+ // Add upper hull in right-to-l order.
+ // Then add lower hull in left-to-right order.
+ for (i = upperIndexes.length - 1; i >= 0; --i) hull.push(points[sortedPoints[upperIndexes[i]][2]]);
+ for (i = +skipLeft; i < lowerIndexes.length - skipRight; ++i) hull.push(points[sortedPoints[lowerIndexes[i]][2]]);
+
+ return hull;
+}
diff --git a/node_modules/d3-polygon/src/index.js b/node_modules/d3-polygon/src/index.js
new file mode 100644
index 00000000..e774be97
--- /dev/null
+++ b/node_modules/d3-polygon/src/index.js
@@ -0,0 +1,5 @@
+export {default as polygonArea} from "./area.js";
+export {default as polygonCentroid} from "./centroid.js";
+export {default as polygonHull} from "./hull.js";
+export {default as polygonContains} from "./contains.js";
+export {default as polygonLength} from "./length.js";
diff --git a/node_modules/d3-polygon/src/length.js b/node_modules/d3-polygon/src/length.js
new file mode 100644
index 00000000..8e4da5ed
--- /dev/null
+++ b/node_modules/d3-polygon/src/length.js
@@ -0,0 +1,23 @@
+export default function(polygon) {
+ var i = -1,
+ n = polygon.length,
+ b = polygon[n - 1],
+ xa,
+ ya,
+ xb = b[0],
+ yb = b[1],
+ perimeter = 0;
+
+ while (++i < n) {
+ xa = xb;
+ ya = yb;
+ b = polygon[i];
+ xb = b[0];
+ yb = b[1];
+ xa -= xb;
+ ya -= yb;
+ perimeter += Math.hypot(xa, ya);
+ }
+
+ return perimeter;
+}
diff --git a/node_modules/d3-quadtree/LICENSE b/node_modules/d3-quadtree/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-quadtree/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-quadtree/README.md b/node_modules/d3-quadtree/README.md
new file mode 100644
index 00000000..0a930a2a
--- /dev/null
+++ b/node_modules/d3-quadtree/README.md
@@ -0,0 +1,181 @@
+# d3-quadtree
+
+A [quadtree](https://en.wikipedia.org/wiki/Quadtree) recursively partitions two-dimensional space into squares, dividing each square into four equally-sized squares. Each distinct point exists in a unique leaf [node](#nodes); coincident points are represented by a linked list. Quadtrees can accelerate various spatial operations, such as the [Barnes–Hut approximation](https://en.wikipedia.org/wiki/Barnes–Hut_simulation) for computing many-body forces, collision detection, and searching for nearby points.
+
+# d3.quadtree ([data [, x , y ]]) [<>](https://github.com/d3/d3-quadtree/blob/master/src/quadtree.js "Source")
+
+Creates a new, empty quadtree with an empty [extent](#quadtree_extent) and the default [*x*-](#quadtree_x) and [*y*-](#quadtree_y)accessors. If *data* is specified, [adds](#quadtree_addAll) the specified array of data to the quadtree. This is equivalent to:
+
+```js
+const tree = d3.quadtree()
+ .addAll(data);
+```
+
+If *x* and *y* are also specified, sets the [*x*-](#quadtree_x) and [*y*-](#quadtree_y) accessors to the specified functions before adding the specified array of data to the quadtree, equivalent to:
+
+```js
+const tree = d3.quadtree()
+ .x(x)
+ .y(y)
+ .addAll(data);
+```
+
+# quadtree .x ([x ]) [<>](https://github.com/d3/d3-quadtree/blob/master/src/x.js "Source")
+
+If *x* is specified, sets the current *x*-coordinate accessor and returns the quadtree. If *x* is not specified, returns the current *x*-accessor, which defaults to:
+
+```js
+function x(d) {
+ return d[0];
+}
+```
+
+The *x*-acccessor is used to derive the *x*-coordinate of data when [adding](#quadtree_add) to and [removing](#quadtree_remove) from the tree. It is also used when [finding](#quadtree_find) to re-access the coordinates of data previously added to the tree; therefore, the *x*- and *y*-accessors must be consistent, returning the same value given the same input.
+
+# quadtree .y ([y ]) [<>](https://github.com/d3/d3-quadtree/blob/master/src/y.js "Source")
+
+If *y* is specified, sets the current *y*-coordinate accessor and returns the quadtree. If *y* is not specified, returns the current *y*-accessor, which defaults to:
+
+```js
+function y(d) {
+ return d[1];
+}
+```
+
+The *y*-acccessor is used to derive the *y*-coordinate of data when [adding](#quadtree_add) to and [removing](#quadtree_remove) from the tree. It is also used when [finding](#quadtree_find) to re-access the coordinates of data previously added to the tree; therefore, the *x*- and *y*-accessors must be consistent, returning the same value given the same input.
+
+# quadtree .extent ([*extent*]) [<>](https://github.com/d3/d3-quadtree/blob/master/src/extent.js "Source")
+
+If *extent* is specified, expands the quadtree to [cover](#quadtree_cover) the specified points [[*x0*, *y0*], [*x1*, *y1*]] and returns the quadtree. If *extent* is not specified, returns the quadtree’s current extent [[*x0*, *y0*], [*x1*, *y1*]], where *x0* and *y0* are the inclusive lower bounds and *x1* and *y1* are the inclusive upper bounds, or undefined if the quadtree has no extent. The extent may also be expanded by calling [*quadtree*.cover](#quadtree_cover) or [*quadtree*.add](#quadtree_add).
+
+# quadtree .cover (x , y ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/cover.js "Source")
+
+Expands the quadtree to cover the specified point ⟨*x*,*y*⟩, and returns the quadtree. If the quadtree’s extent already covers the specified point, this method does nothing. If the quadtree has an extent, the extent is repeatedly doubled to cover the specified point, wrapping the [root](#quadtree_root) [node](#nodes) as necessary; if the quadtree is empty, the extent is initialized to the extent [[⌊*x*⌋, ⌊*y*⌋], [⌈*x*⌉, ⌈*y*⌉]]. (Rounding is necessary such that if the extent is later doubled, the boundaries of existing quadrants do not change due to floating point error.)
+
+# quadtree .add (datum ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/add.js "Source")
+
+Adds the specified *datum* to the quadtree, deriving its coordinates ⟨*x*,*y*⟩ using the current [*x*-](#quadtree_x) and [*y*-](#quadtree_y)accessors, and returns the quadtree. If the new point is outside the current [extent](#quadtree_extent) of the quadtree, the quadtree is automatically expanded to [cover](#quadtree_cover) the new point.
+
+# quadtree .addAll (data ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/add.js "Source")
+
+Adds the specified array of *data* to the quadtree, deriving each element’s coordinates ⟨*x*,*y*⟩ using the current [*x*-](#quadtree_x) and [*y*-](#quadtree_y)accessors, and return this quadtree. This is approximately equivalent to calling [*quadtree*.add](#quadtree_add) repeatedly:
+
+```js
+for (let i = 0, n = data.length; i < n; ++i) {
+ quadtree.add(data[i]);
+}
+```
+
+However, this method results in a more compact quadtree because the extent of the *data* is computed first before adding the data.
+
+# quadtree .remove (datum ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/remove.js "Source")
+
+Removes the specified *datum* from the quadtree, deriving its coordinates ⟨*x*,*y*⟩ using the current [*x*-](#quadtree_x) and [*y*-](#quadtree_y)accessors, and returns the quadtree. If the specified *datum* does not exist in this quadtree, this method does nothing.
+
+# quadtree .removeAll (data ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/remove.js "Source")
+
+Removes the specified *data* from the quadtree, deriving their coordinates ⟨*x*,*y*⟩ using the current [*x*-](#quadtree_x) and [*y*-](#quadtree_y)accessors, and returns the quadtree. If a specified datum does not exist in this quadtree, it is ignored.
+
+# quadtree .copy ()
+
+Returns a copy of the quadtree. All [nodes](#nodes) in the returned quadtree are identical copies of the corresponding node in the quadtree; however, any data in the quadtree is shared by reference and not copied.
+
+# quadtree .root () [<>](https://github.com/d3/d3-quadtree/blob/master/src/root.js "Source")
+
+Returns the root [node](#nodes) of the quadtree.
+
+# quadtree .data () [<>](https://github.com/d3/d3-quadtree/blob/master/src/data.js "Source")
+
+Returns an array of all data in the quadtree.
+
+# quadtree .size () [<>](https://github.com/d3/d3-quadtree/blob/master/src/size.js "Source")
+
+Returns the total number of data in the quadtree.
+
+# quadtree .find (x , y [, radius ]) [<>](https://github.com/d3/d3-quadtree/blob/master/src/find.js "Source")
+
+Returns the datum closest to the position ⟨*x*,*y*⟩ with the given search *radius*. If *radius* is not specified, it defaults to infinity. If there is no datum within the search area, returns undefined.
+
+# quadtree .visit (callback ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/visit.js "Source")
+
+Visits each [node](#nodes) in the quadtree in pre-order traversal, invoking the specified *callback* with arguments *node*, *x0*, *y0*, *x1*, *y1* for each node, where *node* is the node being visited, ⟨*x0*, *y0*⟩ are the lower bounds of the node, and ⟨*x1*, *y1*⟩ are the upper bounds, and returns the quadtree. (Assuming that positive *x* is right and positive *y* is down, as is typically the case in Canvas and SVG, ⟨*x0*, *y0*⟩ is the top-left corner and ⟨*x1*, *y1*⟩ is the lower-right corner; however, the coordinate system is arbitrary, so more formally *x0* <= *x1* and *y0* <= *y1*.)
+
+If the *callback* returns true for a given node, then the children of that node are not visited; otherwise, all child nodes are visited. This can be used to quickly visit only parts of the tree, for example when using the [Barnes–Hut approximation](https://en.wikipedia.org/wiki/Barnes–Hut_simulation). Note, however, that child quadrants are always visited in sibling order: top-left, top-right, bottom-left, bottom-right. In cases such as [search](#quadtree_find), visiting siblings in a specific order may be faster.
+
+As an example, the following visits the quadtree and returns all the nodes within a rectangular extent [xmin, ymin, xmax, ymax], ignoring quads that cannot possibly contain any such node:
+
+```js
+function search(quadtree, xmin, ymin, xmax, ymax) {
+ const results = [];
+ quadtree.visit((node, x1, y1, x2, y2) => {
+ if (!node.length) {
+ do {
+ let d = node.data;
+ if (d[0] >= xmin && d[0] < xmax && d[1] >= ymin && d[1] < ymax) {
+ results.push(d);
+ }
+ } while (node = node.next);
+ }
+ return x1 >= xmax || y1 >= ymax || x2 < xmin || y2 < ymin;
+ });
+ return results;
+}
+```
+
+# quadtree .visitAfter (callback ) [<>](https://github.com/d3/d3-quadtree/blob/master/src/visitAfter.js "Source")
+
+Visits each [node](#nodes) in the quadtree in post-order traversal, invoking the specified *callback* with arguments *node*, *x0*, *y0*, *x1*, *y1* for each node, where *node* is the node being visited, ⟨*x0*, *y0*⟩ are the lower bounds of the node, and ⟨*x1*, *y1*⟩ are the upper bounds, and returns the quadtree. (Assuming that positive *x* is right and positive *y* is down, as is typically the case in Canvas and SVG, ⟨*x0*, *y0*⟩ is the top-left corner and ⟨*x1*, *y1*⟩ is the lower-right corner; however, the coordinate system is arbitrary, so more formally *x0* <= *x1* and *y0* <= *y1*.) Returns *root*.
+
+### Nodes
+
+Internal nodes of the quadtree are represented as four-element arrays in left-to-right, top-to-bottom order:
+
+* `0` - the top-left quadrant, if any.
+* `1` - the top-right quadrant, if any.
+* `2` - the bottom-left quadrant, if any.
+* `3` - the bottom-right quadrant, if any.
+
+A child quadrant may be undefined if it is empty.
+
+Leaf nodes are represented as objects with the following properties:
+
+* `data` - the data associated with this point, as passed to [*quadtree*.add](#quadtree_add).
+* `next` - the next datum in this leaf, if any.
+
+The `length` property may be used to distinguish leaf nodes from internal nodes: it is undefined for leaf nodes, and 4 for internal nodes. For example, to iterate over all data in a leaf node:
+
+```js
+if (!node.length) do console.log(node.data); while (node = node.next);
+```
+
+The point’s *x*- and *y*-coordinates **must not be modified** while the point is in the quadtree. To update a point’s position, [remove](#quadtree_remove) the point and then re-[add](#quadtree_add) it to the quadtree at the new position. Alternatively, you may discard the existing quadtree entirely and create a new one from scratch; this may be more efficient if many of the points have moved.
diff --git a/node_modules/d3-quadtree/dist/d3-quadtree.js b/node_modules/d3-quadtree/dist/d3-quadtree.js
new file mode 100644
index 00000000..e2afa700
--- /dev/null
+++ b/node_modules/d3-quadtree/dist/d3-quadtree.js
@@ -0,0 +1,419 @@
+// https://d3js.org/d3-quadtree/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+function tree_add(d) {
+ const x = +this._x.call(null, d),
+ y = +this._y.call(null, d);
+ return add(this.cover(x, y), x, y, d);
+}
+
+function add(tree, x, y, d) {
+ if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points
+
+ var parent,
+ node = tree._root,
+ leaf = {data: d},
+ x0 = tree._x0,
+ y0 = tree._y0,
+ x1 = tree._x1,
+ y1 = tree._y1,
+ xm,
+ ym,
+ xp,
+ yp,
+ right,
+ bottom,
+ i,
+ j;
+
+ // If the tree is empty, initialize the root as a leaf.
+ if (!node) return tree._root = leaf, tree;
+
+ // Find the existing leaf for the new point, or add it.
+ while (node.length) {
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree;
+ }
+
+ // Is the new point is exactly coincident with the existing point?
+ xp = +tree._x.call(null, node.data);
+ yp = +tree._y.call(null, node.data);
+ if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree;
+
+ // Otherwise, split the leaf node until the old and new point are separated.
+ do {
+ parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4);
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm)));
+ return parent[j] = node, parent[i] = leaf, tree;
+}
+
+function addAll(data) {
+ var d, i, n = data.length,
+ x,
+ y,
+ xz = new Array(n),
+ yz = new Array(n),
+ x0 = Infinity,
+ y0 = Infinity,
+ x1 = -Infinity,
+ y1 = -Infinity;
+
+ // Compute the points and their extent.
+ for (i = 0; i < n; ++i) {
+ if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue;
+ xz[i] = x;
+ yz[i] = y;
+ if (x < x0) x0 = x;
+ if (x > x1) x1 = x;
+ if (y < y0) y0 = y;
+ if (y > y1) y1 = y;
+ }
+
+ // If there were no (valid) points, abort.
+ if (x0 > x1 || y0 > y1) return this;
+
+ // Expand the tree to cover the new points.
+ this.cover(x0, y0).cover(x1, y1);
+
+ // Add the new points.
+ for (i = 0; i < n; ++i) {
+ add(this, xz[i], yz[i], data[i]);
+ }
+
+ return this;
+}
+
+function tree_cover(x, y) {
+ if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points
+
+ var x0 = this._x0,
+ y0 = this._y0,
+ x1 = this._x1,
+ y1 = this._y1;
+
+ // If the quadtree has no extent, initialize them.
+ // Integer extent are necessary so that if we later double the extent,
+ // the existing quadrant boundaries don’t change due to floating point error!
+ if (isNaN(x0)) {
+ x1 = (x0 = Math.floor(x)) + 1;
+ y1 = (y0 = Math.floor(y)) + 1;
+ }
+
+ // Otherwise, double repeatedly to cover.
+ else {
+ var z = x1 - x0 || 1,
+ node = this._root,
+ parent,
+ i;
+
+ while (x0 > x || x >= x1 || y0 > y || y >= y1) {
+ i = (y < y0) << 1 | (x < x0);
+ parent = new Array(4), parent[i] = node, node = parent, z *= 2;
+ switch (i) {
+ case 0: x1 = x0 + z, y1 = y0 + z; break;
+ case 1: x0 = x1 - z, y1 = y0 + z; break;
+ case 2: x1 = x0 + z, y0 = y1 - z; break;
+ case 3: x0 = x1 - z, y0 = y1 - z; break;
+ }
+ }
+
+ if (this._root && this._root.length) this._root = node;
+ }
+
+ this._x0 = x0;
+ this._y0 = y0;
+ this._x1 = x1;
+ this._y1 = y1;
+ return this;
+}
+
+function tree_data() {
+ var data = [];
+ this.visit(function(node) {
+ if (!node.length) do data.push(node.data); while (node = node.next)
+ });
+ return data;
+}
+
+function tree_extent(_) {
+ return arguments.length
+ ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1])
+ : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]];
+}
+
+function Quad(node, x0, y0, x1, y1) {
+ this.node = node;
+ this.x0 = x0;
+ this.y0 = y0;
+ this.x1 = x1;
+ this.y1 = y1;
+}
+
+function tree_find(x, y, radius) {
+ var data,
+ x0 = this._x0,
+ y0 = this._y0,
+ x1,
+ y1,
+ x2,
+ y2,
+ x3 = this._x1,
+ y3 = this._y1,
+ quads = [],
+ node = this._root,
+ q,
+ i;
+
+ if (node) quads.push(new Quad(node, x0, y0, x3, y3));
+ if (radius == null) radius = Infinity;
+ else {
+ x0 = x - radius, y0 = y - radius;
+ x3 = x + radius, y3 = y + radius;
+ radius *= radius;
+ }
+
+ while (q = quads.pop()) {
+
+ // Stop searching if this quadrant can’t contain a closer node.
+ if (!(node = q.node)
+ || (x1 = q.x0) > x3
+ || (y1 = q.y0) > y3
+ || (x2 = q.x1) < x0
+ || (y2 = q.y1) < y0) continue;
+
+ // Bisect the current quadrant.
+ if (node.length) {
+ var xm = (x1 + x2) / 2,
+ ym = (y1 + y2) / 2;
+
+ quads.push(
+ new Quad(node[3], xm, ym, x2, y2),
+ new Quad(node[2], x1, ym, xm, y2),
+ new Quad(node[1], xm, y1, x2, ym),
+ new Quad(node[0], x1, y1, xm, ym)
+ );
+
+ // Visit the closest quadrant first.
+ if (i = (y >= ym) << 1 | (x >= xm)) {
+ q = quads[quads.length - 1];
+ quads[quads.length - 1] = quads[quads.length - 1 - i];
+ quads[quads.length - 1 - i] = q;
+ }
+ }
+
+ // Visit this point. (Visiting coincident points isn’t necessary!)
+ else {
+ var dx = x - +this._x.call(null, node.data),
+ dy = y - +this._y.call(null, node.data),
+ d2 = dx * dx + dy * dy;
+ if (d2 < radius) {
+ var d = Math.sqrt(radius = d2);
+ x0 = x - d, y0 = y - d;
+ x3 = x + d, y3 = y + d;
+ data = node.data;
+ }
+ }
+ }
+
+ return data;
+}
+
+function tree_remove(d) {
+ if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points
+
+ var parent,
+ node = this._root,
+ retainer,
+ previous,
+ next,
+ x0 = this._x0,
+ y0 = this._y0,
+ x1 = this._x1,
+ y1 = this._y1,
+ x,
+ y,
+ xm,
+ ym,
+ right,
+ bottom,
+ i,
+ j;
+
+ // If the tree is empty, initialize the root as a leaf.
+ if (!node) return this;
+
+ // Find the leaf node for the point.
+ // While descending, also retain the deepest parent with a non-removed sibling.
+ if (node.length) while (true) {
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ if (!(parent = node, node = node[i = bottom << 1 | right])) return this;
+ if (!node.length) break;
+ if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i;
+ }
+
+ // Find the point to remove.
+ while (node.data !== d) if (!(previous = node, node = node.next)) return this;
+ if (next = node.next) delete node.next;
+
+ // If there are multiple coincident points, remove just the point.
+ if (previous) return (next ? previous.next = next : delete previous.next), this;
+
+ // If this is the root point, remove it.
+ if (!parent) return this._root = next, this;
+
+ // Remove this leaf.
+ next ? parent[i] = next : delete parent[i];
+
+ // If the parent now contains exactly one leaf, collapse superfluous parents.
+ if ((node = parent[0] || parent[1] || parent[2] || parent[3])
+ && node === (parent[3] || parent[2] || parent[1] || parent[0])
+ && !node.length) {
+ if (retainer) retainer[j] = node;
+ else this._root = node;
+ }
+
+ return this;
+}
+
+function removeAll(data) {
+ for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]);
+ return this;
+}
+
+function tree_root() {
+ return this._root;
+}
+
+function tree_size() {
+ var size = 0;
+ this.visit(function(node) {
+ if (!node.length) do ++size; while (node = node.next)
+ });
+ return size;
+}
+
+function tree_visit(callback) {
+ var quads = [], q, node = this._root, child, x0, y0, x1, y1;
+ if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1));
+ while (q = quads.pop()) {
+ if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) {
+ var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+ if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+ if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+ if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+ if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+ }
+ }
+ return this;
+}
+
+function tree_visitAfter(callback) {
+ var quads = [], next = [], q;
+ if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1));
+ while (q = quads.pop()) {
+ var node = q.node;
+ if (node.length) {
+ var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+ if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+ if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+ if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+ if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+ }
+ next.push(q);
+ }
+ while (q = next.pop()) {
+ callback(q.node, q.x0, q.y0, q.x1, q.y1);
+ }
+ return this;
+}
+
+function defaultX(d) {
+ return d[0];
+}
+
+function tree_x(_) {
+ return arguments.length ? (this._x = _, this) : this._x;
+}
+
+function defaultY(d) {
+ return d[1];
+}
+
+function tree_y(_) {
+ return arguments.length ? (this._y = _, this) : this._y;
+}
+
+function quadtree(nodes, x, y) {
+ var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN);
+ return nodes == null ? tree : tree.addAll(nodes);
+}
+
+function Quadtree(x, y, x0, y0, x1, y1) {
+ this._x = x;
+ this._y = y;
+ this._x0 = x0;
+ this._y0 = y0;
+ this._x1 = x1;
+ this._y1 = y1;
+ this._root = undefined;
+}
+
+function leaf_copy(leaf) {
+ var copy = {data: leaf.data}, next = copy;
+ while (leaf = leaf.next) next = next.next = {data: leaf.data};
+ return copy;
+}
+
+var treeProto = quadtree.prototype = Quadtree.prototype;
+
+treeProto.copy = function() {
+ var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1),
+ node = this._root,
+ nodes,
+ child;
+
+ if (!node) return copy;
+
+ if (!node.length) return copy._root = leaf_copy(node), copy;
+
+ nodes = [{source: node, target: copy._root = new Array(4)}];
+ while (node = nodes.pop()) {
+ for (var i = 0; i < 4; ++i) {
+ if (child = node.source[i]) {
+ if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)});
+ else node.target[i] = leaf_copy(child);
+ }
+ }
+ }
+
+ return copy;
+};
+
+treeProto.add = tree_add;
+treeProto.addAll = addAll;
+treeProto.cover = tree_cover;
+treeProto.data = tree_data;
+treeProto.extent = tree_extent;
+treeProto.find = tree_find;
+treeProto.remove = tree_remove;
+treeProto.removeAll = removeAll;
+treeProto.root = tree_root;
+treeProto.size = tree_size;
+treeProto.visit = tree_visit;
+treeProto.visitAfter = tree_visitAfter;
+treeProto.x = tree_x;
+treeProto.y = tree_y;
+
+exports.quadtree = quadtree;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-quadtree/dist/d3-quadtree.min.js b/node_modules/d3-quadtree/dist/d3-quadtree.min.js
new file mode 100644
index 00000000..670fa61c
--- /dev/null
+++ b/node_modules/d3-quadtree/dist/d3-quadtree.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-quadtree/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(t,i){"object"==typeof exports&&"undefined"!=typeof module?i(exports):"function"==typeof define&&define.amd?define(["exports"],i):i((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";function i(t,i,e,n){if(isNaN(i)||isNaN(e))return t;var r,s,h,o,a,u,l,_,f,c=t._root,x={data:n},y=t._x0,d=t._y0,p=t._x1,v=t._y1;if(!c)return t._root=x,t;for(;c.length;)if((u=i>=(s=(y+p)/2))?y=s:p=s,(l=e>=(h=(d+v)/2))?d=h:v=h,r=c,!(c=c[_=l<<1|u]))return r[_]=x,t;if(o=+t._x.call(null,c.data),a=+t._y.call(null,c.data),i===o&&e===a)return x.next=c,r?r[_]=x:t._root=x,t;do{r=r?r[_]=new Array(4):t._root=new Array(4),(u=i>=(s=(y+p)/2))?y=s:p=s,(l=e>=(h=(d+v)/2))?d=h:v=h}while((_=l<<1|u)==(f=(a>=h)<<1|o>=s));return r[f]=c,r[_]=x,t}function e(t,i,e,n,r){this.node=t,this.x0=i,this.y0=e,this.x1=n,this.y1=r}function n(t){return t[0]}function r(t){return t[1]}function s(t,i,e){var s=new h(null==i?n:i,null==e?r:e,NaN,NaN,NaN,NaN);return null==t?s:s.addAll(t)}function h(t,i,e,n,r,s){this._x=t,this._y=i,this._x0=e,this._y0=n,this._x1=r,this._y1=s,this._root=void 0}function o(t){for(var i={data:t.data},e=i;t=t.next;)e=e.next={data:t.data};return i}var a=s.prototype=h.prototype;a.copy=function(){var t,i,e=new h(this._x,this._y,this._x0,this._y0,this._x1,this._y1),n=this._root;if(!n)return e;if(!n.length)return e._root=o(n),e;for(t=[{source:n,target:e._root=new Array(4)}];n=t.pop();)for(var r=0;r<4;++r)(i=n.source[r])&&(i.length?t.push({source:i,target:n.target[r]=new Array(4)}):n.target[r]=o(i));return e},a.add=function(t){const e=+this._x.call(null,t),n=+this._y.call(null,t);return i(this.cover(e,n),e,n,t)},a.addAll=function(t){var e,n,r,s,h=t.length,o=new Array(h),a=new Array(h),u=1/0,l=1/0,_=-1/0,f=-1/0;for(n=0;n_&&(_=r),sf&&(f=s));if(u>_||l>f)return this;for(this.cover(u,l).cover(_,f),n=0;nt||t>=r||n>i||i>=s;)switch(o=(ic||(h=u.y0)>x||(o=u.x1)<_||(a=u.y1)=v)<<1|t>=p)&&(u=y[y.length-1],y[y.length-1]=y[y.length-1-l],y[y.length-1-l]=u)}else{var w=t-+this._x.call(null,d.data),N=i-+this._y.call(null,d.data),g=w*w+N*N;if(g=(o=(x+d)/2))?x=o:d=o,(l=h>=(a=(y+p)/2))?y=a:p=a,i=c,!(c=c[_=l<<1|u]))return this;if(!c.length)break;(i[_+1&3]||i[_+2&3]||i[_+3&3])&&(e=i,f=_)}for(;c.data!==t;)if(n=c,!(c=c.next))return this;return(r=c.next)&&delete c.next,n?(r?n.next=r:delete n.next,this):i?(r?i[_]=r:delete i[_],(c=i[0]||i[1]||i[2]||i[3])&&c===(i[3]||i[2]||i[1]||i[0])&&!c.length&&(e?e[f]=c:this._root=c),this):(this._root=r,this)},a.removeAll=function(t){for(var i=0,e=t.length;i=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-quadtree.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-quadtree/",
+ "jsdelivr": "dist/d3-quadtree.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "quadtree"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-quadtree",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-quadtree.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-quadtree.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-quadtree/src/add.js b/node_modules/d3-quadtree/src/add.js
new file mode 100644
index 00000000..985adfcf
--- /dev/null
+++ b/node_modules/d3-quadtree/src/add.js
@@ -0,0 +1,84 @@
+export default function(d) {
+ const x = +this._x.call(null, d),
+ y = +this._y.call(null, d);
+ return add(this.cover(x, y), x, y, d);
+}
+
+function add(tree, x, y, d) {
+ if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points
+
+ var parent,
+ node = tree._root,
+ leaf = {data: d},
+ x0 = tree._x0,
+ y0 = tree._y0,
+ x1 = tree._x1,
+ y1 = tree._y1,
+ xm,
+ ym,
+ xp,
+ yp,
+ right,
+ bottom,
+ i,
+ j;
+
+ // If the tree is empty, initialize the root as a leaf.
+ if (!node) return tree._root = leaf, tree;
+
+ // Find the existing leaf for the new point, or add it.
+ while (node.length) {
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree;
+ }
+
+ // Is the new point is exactly coincident with the existing point?
+ xp = +tree._x.call(null, node.data);
+ yp = +tree._y.call(null, node.data);
+ if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree;
+
+ // Otherwise, split the leaf node until the old and new point are separated.
+ do {
+ parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4);
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm)));
+ return parent[j] = node, parent[i] = leaf, tree;
+}
+
+export function addAll(data) {
+ var d, i, n = data.length,
+ x,
+ y,
+ xz = new Array(n),
+ yz = new Array(n),
+ x0 = Infinity,
+ y0 = Infinity,
+ x1 = -Infinity,
+ y1 = -Infinity;
+
+ // Compute the points and their extent.
+ for (i = 0; i < n; ++i) {
+ if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue;
+ xz[i] = x;
+ yz[i] = y;
+ if (x < x0) x0 = x;
+ if (x > x1) x1 = x;
+ if (y < y0) y0 = y;
+ if (y > y1) y1 = y;
+ }
+
+ // If there were no (valid) points, abort.
+ if (x0 > x1 || y0 > y1) return this;
+
+ // Expand the tree to cover the new points.
+ this.cover(x0, y0).cover(x1, y1);
+
+ // Add the new points.
+ for (i = 0; i < n; ++i) {
+ add(this, xz[i], yz[i], data[i]);
+ }
+
+ return this;
+}
diff --git a/node_modules/d3-quadtree/src/cover.js b/node_modules/d3-quadtree/src/cover.js
new file mode 100644
index 00000000..e1d47cd6
--- /dev/null
+++ b/node_modules/d3-quadtree/src/cover.js
@@ -0,0 +1,43 @@
+export default function(x, y) {
+ if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points
+
+ var x0 = this._x0,
+ y0 = this._y0,
+ x1 = this._x1,
+ y1 = this._y1;
+
+ // If the quadtree has no extent, initialize them.
+ // Integer extent are necessary so that if we later double the extent,
+ // the existing quadrant boundaries don’t change due to floating point error!
+ if (isNaN(x0)) {
+ x1 = (x0 = Math.floor(x)) + 1;
+ y1 = (y0 = Math.floor(y)) + 1;
+ }
+
+ // Otherwise, double repeatedly to cover.
+ else {
+ var z = x1 - x0 || 1,
+ node = this._root,
+ parent,
+ i;
+
+ while (x0 > x || x >= x1 || y0 > y || y >= y1) {
+ i = (y < y0) << 1 | (x < x0);
+ parent = new Array(4), parent[i] = node, node = parent, z *= 2;
+ switch (i) {
+ case 0: x1 = x0 + z, y1 = y0 + z; break;
+ case 1: x0 = x1 - z, y1 = y0 + z; break;
+ case 2: x1 = x0 + z, y0 = y1 - z; break;
+ case 3: x0 = x1 - z, y0 = y1 - z; break;
+ }
+ }
+
+ if (this._root && this._root.length) this._root = node;
+ }
+
+ this._x0 = x0;
+ this._y0 = y0;
+ this._x1 = x1;
+ this._y1 = y1;
+ return this;
+}
diff --git a/node_modules/d3-quadtree/src/data.js b/node_modules/d3-quadtree/src/data.js
new file mode 100644
index 00000000..e934fa9d
--- /dev/null
+++ b/node_modules/d3-quadtree/src/data.js
@@ -0,0 +1,7 @@
+export default function() {
+ var data = [];
+ this.visit(function(node) {
+ if (!node.length) do data.push(node.data); while (node = node.next)
+ });
+ return data;
+}
diff --git a/node_modules/d3-quadtree/src/extent.js b/node_modules/d3-quadtree/src/extent.js
new file mode 100644
index 00000000..9e65a90a
--- /dev/null
+++ b/node_modules/d3-quadtree/src/extent.js
@@ -0,0 +1,5 @@
+export default function(_) {
+ return arguments.length
+ ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1])
+ : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]];
+}
diff --git a/node_modules/d3-quadtree/src/find.js b/node_modules/d3-quadtree/src/find.js
new file mode 100644
index 00000000..e9db6c41
--- /dev/null
+++ b/node_modules/d3-quadtree/src/find.js
@@ -0,0 +1,70 @@
+import Quad from "./quad.js";
+
+export default function(x, y, radius) {
+ var data,
+ x0 = this._x0,
+ y0 = this._y0,
+ x1,
+ y1,
+ x2,
+ y2,
+ x3 = this._x1,
+ y3 = this._y1,
+ quads = [],
+ node = this._root,
+ q,
+ i;
+
+ if (node) quads.push(new Quad(node, x0, y0, x3, y3));
+ if (radius == null) radius = Infinity;
+ else {
+ x0 = x - radius, y0 = y - radius;
+ x3 = x + radius, y3 = y + radius;
+ radius *= radius;
+ }
+
+ while (q = quads.pop()) {
+
+ // Stop searching if this quadrant can’t contain a closer node.
+ if (!(node = q.node)
+ || (x1 = q.x0) > x3
+ || (y1 = q.y0) > y3
+ || (x2 = q.x1) < x0
+ || (y2 = q.y1) < y0) continue;
+
+ // Bisect the current quadrant.
+ if (node.length) {
+ var xm = (x1 + x2) / 2,
+ ym = (y1 + y2) / 2;
+
+ quads.push(
+ new Quad(node[3], xm, ym, x2, y2),
+ new Quad(node[2], x1, ym, xm, y2),
+ new Quad(node[1], xm, y1, x2, ym),
+ new Quad(node[0], x1, y1, xm, ym)
+ );
+
+ // Visit the closest quadrant first.
+ if (i = (y >= ym) << 1 | (x >= xm)) {
+ q = quads[quads.length - 1];
+ quads[quads.length - 1] = quads[quads.length - 1 - i];
+ quads[quads.length - 1 - i] = q;
+ }
+ }
+
+ // Visit this point. (Visiting coincident points isn’t necessary!)
+ else {
+ var dx = x - +this._x.call(null, node.data),
+ dy = y - +this._y.call(null, node.data),
+ d2 = dx * dx + dy * dy;
+ if (d2 < radius) {
+ var d = Math.sqrt(radius = d2);
+ x0 = x - d, y0 = y - d;
+ x3 = x + d, y3 = y + d;
+ data = node.data;
+ }
+ }
+ }
+
+ return data;
+}
diff --git a/node_modules/d3-quadtree/src/index.js b/node_modules/d3-quadtree/src/index.js
new file mode 100644
index 00000000..e2b2c313
--- /dev/null
+++ b/node_modules/d3-quadtree/src/index.js
@@ -0,0 +1 @@
+export {default as quadtree} from "./quadtree.js";
diff --git a/node_modules/d3-quadtree/src/quad.js b/node_modules/d3-quadtree/src/quad.js
new file mode 100644
index 00000000..6f714dbb
--- /dev/null
+++ b/node_modules/d3-quadtree/src/quad.js
@@ -0,0 +1,7 @@
+export default function(node, x0, y0, x1, y1) {
+ this.node = node;
+ this.x0 = x0;
+ this.y0 = y0;
+ this.x1 = x1;
+ this.y1 = y1;
+}
diff --git a/node_modules/d3-quadtree/src/quadtree.js b/node_modules/d3-quadtree/src/quadtree.js
new file mode 100644
index 00000000..5d585938
--- /dev/null
+++ b/node_modules/d3-quadtree/src/quadtree.js
@@ -0,0 +1,73 @@
+import tree_add, {addAll as tree_addAll} from "./add.js";
+import tree_cover from "./cover.js";
+import tree_data from "./data.js";
+import tree_extent from "./extent.js";
+import tree_find from "./find.js";
+import tree_remove, {removeAll as tree_removeAll} from "./remove.js";
+import tree_root from "./root.js";
+import tree_size from "./size.js";
+import tree_visit from "./visit.js";
+import tree_visitAfter from "./visitAfter.js";
+import tree_x, {defaultX} from "./x.js";
+import tree_y, {defaultY} from "./y.js";
+
+export default function quadtree(nodes, x, y) {
+ var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN);
+ return nodes == null ? tree : tree.addAll(nodes);
+}
+
+function Quadtree(x, y, x0, y0, x1, y1) {
+ this._x = x;
+ this._y = y;
+ this._x0 = x0;
+ this._y0 = y0;
+ this._x1 = x1;
+ this._y1 = y1;
+ this._root = undefined;
+}
+
+function leaf_copy(leaf) {
+ var copy = {data: leaf.data}, next = copy;
+ while (leaf = leaf.next) next = next.next = {data: leaf.data};
+ return copy;
+}
+
+var treeProto = quadtree.prototype = Quadtree.prototype;
+
+treeProto.copy = function() {
+ var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1),
+ node = this._root,
+ nodes,
+ child;
+
+ if (!node) return copy;
+
+ if (!node.length) return copy._root = leaf_copy(node), copy;
+
+ nodes = [{source: node, target: copy._root = new Array(4)}];
+ while (node = nodes.pop()) {
+ for (var i = 0; i < 4; ++i) {
+ if (child = node.source[i]) {
+ if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)});
+ else node.target[i] = leaf_copy(child);
+ }
+ }
+ }
+
+ return copy;
+};
+
+treeProto.add = tree_add;
+treeProto.addAll = tree_addAll;
+treeProto.cover = tree_cover;
+treeProto.data = tree_data;
+treeProto.extent = tree_extent;
+treeProto.find = tree_find;
+treeProto.remove = tree_remove;
+treeProto.removeAll = tree_removeAll;
+treeProto.root = tree_root;
+treeProto.size = tree_size;
+treeProto.visit = tree_visit;
+treeProto.visitAfter = tree_visitAfter;
+treeProto.x = tree_x;
+treeProto.y = tree_y;
diff --git a/node_modules/d3-quadtree/src/remove.js b/node_modules/d3-quadtree/src/remove.js
new file mode 100644
index 00000000..0ba27abe
--- /dev/null
+++ b/node_modules/d3-quadtree/src/remove.js
@@ -0,0 +1,62 @@
+export default function(d) {
+ if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points
+
+ var parent,
+ node = this._root,
+ retainer,
+ previous,
+ next,
+ x0 = this._x0,
+ y0 = this._y0,
+ x1 = this._x1,
+ y1 = this._y1,
+ x,
+ y,
+ xm,
+ ym,
+ right,
+ bottom,
+ i,
+ j;
+
+ // If the tree is empty, initialize the root as a leaf.
+ if (!node) return this;
+
+ // Find the leaf node for the point.
+ // While descending, also retain the deepest parent with a non-removed sibling.
+ if (node.length) while (true) {
+ if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm;
+ if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym;
+ if (!(parent = node, node = node[i = bottom << 1 | right])) return this;
+ if (!node.length) break;
+ if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i;
+ }
+
+ // Find the point to remove.
+ while (node.data !== d) if (!(previous = node, node = node.next)) return this;
+ if (next = node.next) delete node.next;
+
+ // If there are multiple coincident points, remove just the point.
+ if (previous) return (next ? previous.next = next : delete previous.next), this;
+
+ // If this is the root point, remove it.
+ if (!parent) return this._root = next, this;
+
+ // Remove this leaf.
+ next ? parent[i] = next : delete parent[i];
+
+ // If the parent now contains exactly one leaf, collapse superfluous parents.
+ if ((node = parent[0] || parent[1] || parent[2] || parent[3])
+ && node === (parent[3] || parent[2] || parent[1] || parent[0])
+ && !node.length) {
+ if (retainer) retainer[j] = node;
+ else this._root = node;
+ }
+
+ return this;
+}
+
+export function removeAll(data) {
+ for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]);
+ return this;
+}
diff --git a/node_modules/d3-quadtree/src/root.js b/node_modules/d3-quadtree/src/root.js
new file mode 100644
index 00000000..c32889f7
--- /dev/null
+++ b/node_modules/d3-quadtree/src/root.js
@@ -0,0 +1,3 @@
+export default function() {
+ return this._root;
+}
diff --git a/node_modules/d3-quadtree/src/size.js b/node_modules/d3-quadtree/src/size.js
new file mode 100644
index 00000000..d2d5ab61
--- /dev/null
+++ b/node_modules/d3-quadtree/src/size.js
@@ -0,0 +1,7 @@
+export default function() {
+ var size = 0;
+ this.visit(function(node) {
+ if (!node.length) do ++size; while (node = node.next)
+ });
+ return size;
+}
diff --git a/node_modules/d3-quadtree/src/visit.js b/node_modules/d3-quadtree/src/visit.js
new file mode 100644
index 00000000..941ab884
--- /dev/null
+++ b/node_modules/d3-quadtree/src/visit.js
@@ -0,0 +1,16 @@
+import Quad from "./quad.js";
+
+export default function(callback) {
+ var quads = [], q, node = this._root, child, x0, y0, x1, y1;
+ if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1));
+ while (q = quads.pop()) {
+ if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) {
+ var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+ if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+ if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+ if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+ if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+ }
+ }
+ return this;
+}
diff --git a/node_modules/d3-quadtree/src/visitAfter.js b/node_modules/d3-quadtree/src/visitAfter.js
new file mode 100644
index 00000000..20966553
--- /dev/null
+++ b/node_modules/d3-quadtree/src/visitAfter.js
@@ -0,0 +1,21 @@
+import Quad from "./quad.js";
+
+export default function(callback) {
+ var quads = [], next = [], q;
+ if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1));
+ while (q = quads.pop()) {
+ var node = q.node;
+ if (node.length) {
+ var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2;
+ if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym));
+ if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym));
+ if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1));
+ if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1));
+ }
+ next.push(q);
+ }
+ while (q = next.pop()) {
+ callback(q.node, q.x0, q.y0, q.x1, q.y1);
+ }
+ return this;
+}
diff --git a/node_modules/d3-quadtree/src/x.js b/node_modules/d3-quadtree/src/x.js
new file mode 100644
index 00000000..ffea5075
--- /dev/null
+++ b/node_modules/d3-quadtree/src/x.js
@@ -0,0 +1,7 @@
+export function defaultX(d) {
+ return d[0];
+}
+
+export default function(_) {
+ return arguments.length ? (this._x = _, this) : this._x;
+}
diff --git a/node_modules/d3-quadtree/src/y.js b/node_modules/d3-quadtree/src/y.js
new file mode 100644
index 00000000..d2d29cb7
--- /dev/null
+++ b/node_modules/d3-quadtree/src/y.js
@@ -0,0 +1,7 @@
+export function defaultY(d) {
+ return d[1];
+}
+
+export default function(_) {
+ return arguments.length ? (this._y = _, this) : this._y;
+}
diff --git a/node_modules/d3-random/LICENSE b/node_modules/d3-random/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-random/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-random/README.md b/node_modules/d3-random/README.md
new file mode 100644
index 00000000..1e67488a
--- /dev/null
+++ b/node_modules/d3-random/README.md
@@ -0,0 +1,133 @@
+# d3-random
+
+Generate random numbers from various distributions.
+
+See the [d3-random collection on Observable](https://observablehq.com/collection/@d3/d3-random) for examples.
+
+## Installing
+
+If you use npm, `npm install d3-random`. You can also download the [latest release on GitHub](https://github.com/d3/d3-random/releases/latest). For vanilla HTML in modern browsers, import d3-random from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-random’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+## API Reference
+
+# d3.randomUniform ([min , ][max ]) · [Source](https://github.com/d3/d3-random/blob/master/src/uniform.js), [Examples](https://observablehq.com/@d3/d3-random#uniform)
+
+Returns a function for generating random numbers with a [uniform distribution](https://en.wikipedia.org/wiki/Uniform_distribution_\(continuous\)). The minimum allowed value of a returned number is *min* (inclusive), and the maximum is *max* (exclusive). If *min* is not specified, it defaults to 0; if *max* is not specified, it defaults to 1. For example:
+
+```js
+d3.randomUniform(6)(); // Returns a number greater than or equal to 0 and less than 6.
+d3.randomUniform(1, 5)(); // Returns a number greater than or equal to 1 and less than 5.
+```
+
+# d3.randomInt ([min , ][max ]) · [Source](https://github.com/d3/d3-random/blob/master/src/int.js), [Examples](https://observablehq.com/@d3/d3-random#int)
+
+Returns a function for generating random integers with a [uniform distribution](https://en.wikipedia.org/wiki/Uniform_distribution_\(continuous\)). The minimum allowed value of a returned number is ⌊*min*⌋ (inclusive), and the maximum is ⌊*max* - 1⌋ (inclusive). If *min* is not specified, it defaults to 0. For example:
+
+```js
+d3.randomInt(6)(); // Returns an integer greater than or equal to 0 and less than 6.
+d3.randomInt(1, 5)(); // Returns an integer greater than or equal to 1 and less than 5.
+```
+
+# d3.randomNormal ([mu ][, sigma ]) · [Source](https://github.com/d3/d3-random/blob/master/src/normal.js), [Examples](https://observablehq.com/@d3/d3-random#normal)
+
+Returns a function for generating random numbers with a [normal (Gaussian) distribution](https://en.wikipedia.org/wiki/Normal_distribution). The expected value of the generated numbers is *mu*, with the given standard deviation *sigma*. If *mu* is not specified, it defaults to 0; if *sigma* is not specified, it defaults to 1.
+
+# d3.randomLogNormal ([mu ][, sigma ]) · [Source](https://github.com/d3/d3-random/blob/master/src/logNormal.js), [Examples](https://observablehq.com/@d3/d3-random#logNormal)
+
+Returns a function for generating random numbers with a [log-normal distribution](https://en.wikipedia.org/wiki/Log-normal_distribution). The expected value of the random variable’s natural logarithm is *mu*, with the given standard deviation *sigma*. If *mu* is not specified, it defaults to 0; if *sigma* is not specified, it defaults to 1.
+
+# d3.randomBates (n ) · [Source](https://github.com/d3/d3-random/blob/master/src/bates.js), [Examples](https://observablehq.com/@d3/d3-random#bates)
+
+Returns a function for generating random numbers with a [Bates distribution](https://en.wikipedia.org/wiki/Bates_distribution) with *n* independent variables. The case of fractional *n* is handled as with d3.randomIrwinHall, and d3.randomBates(0) is equivalent to d3.randomUniform().
+
+# d3.randomIrwinHall (n ) · [Source](https://github.com/d3/d3-random/blob/master/src/irwinHall.js), [Examples](https://observablehq.com/@d3/d3-random#irwinHall)
+
+Returns a function for generating random numbers with an [Irwin–Hall distribution](https://en.wikipedia.org/wiki/Irwin–Hall_distribution) with *n* independent variables. If the fractional part of *n* is non-zero, this is treated as adding d3.randomUniform() times that fractional part to the integral part.
+
+# d3.randomExponential (lambda ) · [Source](https://github.com/d3/d3-random/blob/master/src/exponential.js), [Examples](https://observablehq.com/@d3/d3-random#exponential)
+
+Returns a function for generating random numbers with an [exponential distribution](https://en.wikipedia.org/wiki/Exponential_distribution) with the rate *lambda*; equivalent to time between events in a [Poisson process](https://en.wikipedia.org/wiki/Poisson_point_process) with a mean of 1 / *lambda*. For example, exponential(1/40) generates random times between events where, on average, one event occurs every 40 units of time.
+
+# d3.randomPareto (alpha ) · [Source](https://github.com/d3/d3-random/blob/master/src/pareto.js), [Examples](https://observablehq.com/@d3/d3-random#pareto)
+
+Returns a function for generating random numbers with a [Pareto distribution](https://en.wikipedia.org/wiki/Pareto_distribution) with the shape *alpha*. The value *alpha* must be a positive value.
+
+# d3.randomBernoulli (p ) · [Source](https://github.com/d3/d3-random/blob/master/src/bernoulli.js), [Examples](https://observablehq.com/@d3/d3-random#bernoulli)
+
+Returns a function for generating either 1 or 0 according to a [Bernoulli distribution](https://en.wikipedia.org/wiki/Binomial_distribution) with 1 being returned with success probability *p* and 0 with failure probability *q* = 1 - *p*. The value *p* is in the range [0, 1].
+
+# d3.randomGeometric (p ) · [Source](https://github.com/d3/d3-random/blob/master/src/geometric.js), [Examples](https://observablehq.com/@d3/d3-random#geometric)
+
+Returns a function for generating numbers with a [geometric distribution](https://en.wikipedia.org/wiki/Geometric_distribution) with success probability *p*. The value *p* is in the range [0, 1].
+
+# d3.randomBinomial (n , p ) · [Source](https://github.com/d3/d3-random/blob/master/src/binomial.js), [Examples](https://observablehq.com/@d3/d3-random#binomial)
+
+Returns a function for generating random numbers with a [binomial distribution](https://en.wikipedia.org/wiki/Binomial_distribution) with *n* the number of trials and *p* the probability of success in each trial. The value *n* is greater or equal to 0, and the value *p* is in the range [0, 1].
+
+# d3.randomGamma (k , [theta ]) · [Source](https://github.com/d3/d3-random/blob/master/src/gamma.js), [Examples](https://observablehq.com/@parcly-taxel/the-gamma-and-beta-distributions)
+
+Returns a function for generating random numbers with a [gamma distribution](https://en.wikipedia.org/wiki/Gamma_distribution) with *k* the shape parameter and *theta* the scale parameter. The value *k* must be a positive value; if *theta* is not specified, it defaults to 1.
+
+# d3.randomBeta (alpha , beta ) · [Source](https://github.com/d3/d3-random/blob/master/src/beta.js), [Examples](https://observablehq.com/@parcly-taxel/the-gamma-and-beta-distributions)
+
+Returns a function for generating random numbers with a [beta distribution](https://en.wikipedia.org/wiki/Beta_distribution) with *alpha* and *beta* shape parameters, which must both be positive.
+
+# d3.randomWeibull (k , [a ], [b ]) · [Source](https://github.com/d3/d3-random/blob/master/src/weibull.js), [Examples](https://observablehq.com/@parcly-taxel/frechet-gumbel-weibull)
+
+Returns a function for generating random numbers with one of the [generalized extreme value distributions](https://en.wikipedia.org/wiki/Generalized_extreme_value_distribution), depending on *k*:
+
+* If *k* is positive, the [Weibull distribution](https://en.wikipedia.org/wiki/Weibull_distribution) with shape parameter *k*
+* If *k* is zero, the [Gumbel distribution](https://en.wikipedia.org/wiki/Gumbel_distribution)
+* If *k* is negative, the [Fréchet distribution](https://en.wikipedia.org/wiki/Fréchet_distribution) with shape parameter −*k*
+
+In all three cases, *a* is the location parameter and *b* is the scale parameter. If *a* is not specified, it defaults to 0; if *b* is not specified, it defaults to 1.
+
+# d3.randomCauchy ([a ], [b ]) · [Source](https://github.com/d3/d3-random/blob/master/src/cauchy.js), [Examples](https://observablehq.com/@parcly-taxel/cauchy-and-logistic-distributions)
+
+Returns a function for generating random numbers with a [Cauchy distribution](https://en.wikipedia.org/wiki/Cauchy_distribution). *a* and *b* have the same meanings and default values as in d3.randomWeibull.
+
+# d3.randomLogistic ([a ], [b ]) · [Source](https://github.com/d3/d3-random/blob/master/src/logistic.js), [Examples](https://observablehq.com/@parcly-taxel/cauchy-and-logistic-distributions)
+
+Returns a function for generating random numbers with a [logistic distribution](https://en.wikipedia.org/wiki/Logistic_distribution). *a* and *b* have the same meanings and default values as in d3.randomWeibull.
+
+# d3.randomPoisson (lambda ) · [Source](https://github.com/d3/d3-random/blob/master/src/poisson.js), [Examples](https://observablehq.com/@parcly-taxel/the-poisson-distribution)
+
+Returns a function for generating random numbers with a [Poisson distribution](https://en.wikipedia.org/wiki/Poisson_distribution) with mean *lambda*.
+
+# random .source (source ) · [Examples](https://observablehq.com/@d3/random-source)
+
+Returns the same type of function for generating random numbers but where the given random number generator *source* is used as the source of randomness instead of Math.random. The given random number generator must implement the same interface as Math.random and only return values in the range [0, 1). This is useful when a seeded random number generator is preferable to Math.random. For example:
+
+```js
+import {randomLcg, randomNumber} from "d3-random";
+
+const seed = 0.44871573888282423; // any number in [0, 1)
+const random = randomNormal.source(randomLcg(seed))(0, 1);
+
+random(); // -0.6253955998897069
+```
+
+# d3.randomLcg ([seed ]) · [Source](https://github.com/d3/d3-random/blob/master/src/lcg.js), [Examples](https://observablehq.com/@d3/d3-randomlcg)
+
+Returns a [linear congruential generator](https://en.wikipedia.org/wiki/Linear_congruential_generator); this function can be called repeatedly to obtain pseudorandom values well-distributed on the interval [0,1) and with a long period (up to 1 billion numbers), similar to Math.random. A *seed* can be specified as a real number in the interval [0,1) or as any integer. In the latter case, only the lower 32 bits are considered. Two generators instanced with the same seed generate the same sequence, allowing to create reproducible pseudo-random experiments. If the *seed* is not specified, one is chosen using Math.random.
diff --git a/node_modules/d3-random/dist/d3-random.js b/node_modules/d3-random/dist/d3-random.js
new file mode 100644
index 00000000..e4b6eaae
--- /dev/null
+++ b/node_modules/d3-random/dist/d3-random.js
@@ -0,0 +1,358 @@
+// https://d3js.org/d3-random/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+var defaultSource = Math.random;
+
+var uniform = (function sourceRandomUniform(source) {
+ function randomUniform(min, max) {
+ min = min == null ? 0 : +min;
+ max = max == null ? 1 : +max;
+ if (arguments.length === 1) max = min, min = 0;
+ else max -= min;
+ return function() {
+ return source() * max + min;
+ };
+ }
+
+ randomUniform.source = sourceRandomUniform;
+
+ return randomUniform;
+})(defaultSource);
+
+var int = (function sourceRandomInt(source) {
+ function randomInt(min, max) {
+ if (arguments.length < 2) max = min, min = 0;
+ min = Math.floor(min);
+ max = Math.floor(max) - min;
+ return function() {
+ return Math.floor(source() * max + min);
+ };
+ }
+
+ randomInt.source = sourceRandomInt;
+
+ return randomInt;
+})(defaultSource);
+
+var normal = (function sourceRandomNormal(source) {
+ function randomNormal(mu, sigma) {
+ var x, r;
+ mu = mu == null ? 0 : +mu;
+ sigma = sigma == null ? 1 : +sigma;
+ return function() {
+ var y;
+
+ // If available, use the second previously-generated uniform random.
+ if (x != null) y = x, x = null;
+
+ // Otherwise, generate a new x and y.
+ else do {
+ x = source() * 2 - 1;
+ y = source() * 2 - 1;
+ r = x * x + y * y;
+ } while (!r || r > 1);
+
+ return mu + sigma * y * Math.sqrt(-2 * Math.log(r) / r);
+ };
+ }
+
+ randomNormal.source = sourceRandomNormal;
+
+ return randomNormal;
+})(defaultSource);
+
+var logNormal = (function sourceRandomLogNormal(source) {
+ var N = normal.source(source);
+
+ function randomLogNormal() {
+ var randomNormal = N.apply(this, arguments);
+ return function() {
+ return Math.exp(randomNormal());
+ };
+ }
+
+ randomLogNormal.source = sourceRandomLogNormal;
+
+ return randomLogNormal;
+})(defaultSource);
+
+var irwinHall = (function sourceRandomIrwinHall(source) {
+ function randomIrwinHall(n) {
+ if ((n = +n) <= 0) return () => 0;
+ return function() {
+ for (var sum = 0, i = n; i > 1; --i) sum += source();
+ return sum + i * source();
+ };
+ }
+
+ randomIrwinHall.source = sourceRandomIrwinHall;
+
+ return randomIrwinHall;
+})(defaultSource);
+
+var bates = (function sourceRandomBates(source) {
+ var I = irwinHall.source(source);
+
+ function randomBates(n) {
+ // use limiting distribution at n === 0
+ if ((n = +n) === 0) return source;
+ var randomIrwinHall = I(n);
+ return function() {
+ return randomIrwinHall() / n;
+ };
+ }
+
+ randomBates.source = sourceRandomBates;
+
+ return randomBates;
+})(defaultSource);
+
+var exponential = (function sourceRandomExponential(source) {
+ function randomExponential(lambda) {
+ return function() {
+ return -Math.log1p(-source()) / lambda;
+ };
+ }
+
+ randomExponential.source = sourceRandomExponential;
+
+ return randomExponential;
+})(defaultSource);
+
+var pareto = (function sourceRandomPareto(source) {
+ function randomPareto(alpha) {
+ if ((alpha = +alpha) < 0) throw new RangeError("invalid alpha");
+ alpha = 1 / -alpha;
+ return function() {
+ return Math.pow(1 - source(), alpha);
+ };
+ }
+
+ randomPareto.source = sourceRandomPareto;
+
+ return randomPareto;
+})(defaultSource);
+
+var bernoulli = (function sourceRandomBernoulli(source) {
+ function randomBernoulli(p) {
+ if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+ return function() {
+ return Math.floor(source() + p);
+ };
+ }
+
+ randomBernoulli.source = sourceRandomBernoulli;
+
+ return randomBernoulli;
+})(defaultSource);
+
+var geometric = (function sourceRandomGeometric(source) {
+ function randomGeometric(p) {
+ if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+ if (p === 0) return () => Infinity;
+ if (p === 1) return () => 1;
+ p = Math.log1p(-p);
+ return function() {
+ return 1 + Math.floor(Math.log1p(-source()) / p);
+ };
+ }
+
+ randomGeometric.source = sourceRandomGeometric;
+
+ return randomGeometric;
+})(defaultSource);
+
+var gamma = (function sourceRandomGamma(source) {
+ var randomNormal = normal.source(source)();
+
+ function randomGamma(k, theta) {
+ if ((k = +k) < 0) throw new RangeError("invalid k");
+ // degenerate distribution if k === 0
+ if (k === 0) return () => 0;
+ theta = theta == null ? 1 : +theta;
+ // exponential distribution if k === 1
+ if (k === 1) return () => -Math.log1p(-source()) * theta;
+
+ var d = (k < 1 ? k + 1 : k) - 1 / 3,
+ c = 1 / (3 * Math.sqrt(d)),
+ multiplier = k < 1 ? () => Math.pow(source(), 1 / k) : () => 1;
+ return function() {
+ do {
+ do {
+ var x = randomNormal(),
+ v = 1 + c * x;
+ } while (v <= 0);
+ v *= v * v;
+ var u = 1 - source();
+ } while (u >= 1 - 0.0331 * x * x * x * x && Math.log(u) >= 0.5 * x * x + d * (1 - v + Math.log(v)));
+ return d * v * multiplier() * theta;
+ };
+ }
+
+ randomGamma.source = sourceRandomGamma;
+
+ return randomGamma;
+})(defaultSource);
+
+var beta = (function sourceRandomBeta(source) {
+ var G = gamma.source(source);
+
+ function randomBeta(alpha, beta) {
+ var X = G(alpha),
+ Y = G(beta);
+ return function() {
+ var x = X();
+ return x === 0 ? 0 : x / (x + Y());
+ };
+ }
+
+ randomBeta.source = sourceRandomBeta;
+
+ return randomBeta;
+})(defaultSource);
+
+var binomial = (function sourceRandomBinomial(source) {
+ var G = geometric.source(source),
+ B = beta.source(source);
+
+ function randomBinomial(n, p) {
+ n = +n;
+ if ((p = +p) >= 1) return () => n;
+ if (p <= 0) return () => 0;
+ return function() {
+ var acc = 0, nn = n, pp = p;
+ while (nn * pp > 16 && nn * (1 - pp) > 16) {
+ var i = Math.floor((nn + 1) * pp),
+ y = B(i, nn - i + 1)();
+ if (y <= pp) {
+ acc += i;
+ nn -= i;
+ pp = (pp - y) / (1 - y);
+ } else {
+ nn = i - 1;
+ pp /= y;
+ }
+ }
+ var sign = pp < 0.5,
+ pFinal = sign ? pp : 1 - pp,
+ g = G(pFinal);
+ for (var s = g(), k = 0; s <= nn; ++k) s += g();
+ return acc + (sign ? k : nn - k);
+ };
+ }
+
+ randomBinomial.source = sourceRandomBinomial;
+
+ return randomBinomial;
+})(defaultSource);
+
+var weibull = (function sourceRandomWeibull(source) {
+ function randomWeibull(k, a, b) {
+ var outerFunc;
+ if ((k = +k) === 0) {
+ outerFunc = x => -Math.log(x);
+ } else {
+ k = 1 / k;
+ outerFunc = x => Math.pow(x, k);
+ }
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ return a + b * outerFunc(-Math.log1p(-source()));
+ };
+ }
+
+ randomWeibull.source = sourceRandomWeibull;
+
+ return randomWeibull;
+})(defaultSource);
+
+var cauchy = (function sourceRandomCauchy(source) {
+ function randomCauchy(a, b) {
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ return a + b * Math.tan(Math.PI * source());
+ };
+ }
+
+ randomCauchy.source = sourceRandomCauchy;
+
+ return randomCauchy;
+})(defaultSource);
+
+var logistic = (function sourceRandomLogistic(source) {
+ function randomLogistic(a, b) {
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ var u = source();
+ return a + b * Math.log(u / (1 - u));
+ };
+ }
+
+ randomLogistic.source = sourceRandomLogistic;
+
+ return randomLogistic;
+})(defaultSource);
+
+var poisson = (function sourceRandomPoisson(source) {
+ var G = gamma.source(source),
+ B = binomial.source(source);
+
+ function randomPoisson(lambda) {
+ return function() {
+ var acc = 0, l = lambda;
+ while (l > 16) {
+ var n = Math.floor(0.875 * l),
+ t = G(n)();
+ if (t > l) return acc + B(n - 1, l / t)();
+ acc += n;
+ l -= t;
+ }
+ for (var s = -Math.log1p(-source()), k = 0; s <= l; ++k) s -= Math.log1p(-source());
+ return acc + k;
+ };
+ }
+
+ randomPoisson.source = sourceRandomPoisson;
+
+ return randomPoisson;
+})(defaultSource);
+
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const mul = 0x19660D;
+const inc = 0x3C6EF35F;
+const eps = 1 / 0x100000000;
+
+function lcg(seed = Math.random()) {
+ let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0;
+ return () => (state = mul * state + inc | 0, eps * (state >>> 0));
+}
+
+exports.randomBates = bates;
+exports.randomBernoulli = bernoulli;
+exports.randomBeta = beta;
+exports.randomBinomial = binomial;
+exports.randomCauchy = cauchy;
+exports.randomExponential = exponential;
+exports.randomGamma = gamma;
+exports.randomGeometric = geometric;
+exports.randomInt = int;
+exports.randomIrwinHall = irwinHall;
+exports.randomLcg = lcg;
+exports.randomLogNormal = logNormal;
+exports.randomLogistic = logistic;
+exports.randomNormal = normal;
+exports.randomPareto = pareto;
+exports.randomPoisson = poisson;
+exports.randomUniform = uniform;
+exports.randomWeibull = weibull;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-random/dist/d3-random.min.js b/node_modules/d3-random/dist/d3-random.min.js
new file mode 100644
index 00000000..d83f671a
--- /dev/null
+++ b/node_modules/d3-random/dist/d3-random.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-random/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(n,r){"object"==typeof exports&&"undefined"!=typeof module?r(exports):"function"==typeof define&&define.amd?define(["exports"],r):r((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{})}(this,(function(n){"use strict";var r=Math.random,t=function n(r){function t(n,t){return n=null==n?0:+n,t=null==t?1:+t,1===arguments.length?(t=n,n=0):t-=n,function(){return r()*t+n}}return t.source=n,t}(r),o=function n(r){function t(n,t){return arguments.length<2&&(t=n,n=0),n=Math.floor(n),t=Math.floor(t)-n,function(){return Math.floor(r()*t+n)}}return t.source=n,t}(r),u=function n(r){function t(n,t){var o,u;return n=null==n?0:+n,t=null==t?1:+t,function(){var e;if(null!=o)e=o,o=null;else do{o=2*r()-1,e=2*r()-1,u=o*o+e*e}while(!u||u>1);return n+t*e*Math.sqrt(-2*Math.log(u)/u)}}return t.source=n,t}(r),e=function n(r){var t=u.source(r);function o(){var n=t.apply(this,arguments);return function(){return Math.exp(n())}}return o.source=n,o}(r),a=function n(r){function t(n){return(n=+n)<=0?()=>0:function(){for(var t=0,o=n;o>1;--o)t+=r();return t+o*r()}}return t.source=n,t}(r),i=function n(r){var t=a.source(r);function o(n){if(0==(n=+n))return r;var o=t(n);return function(){return o()/n}}return o.source=n,o}(r),c=function n(r){function t(n){return function(){return-Math.log1p(-r())/n}}return t.source=n,t}(r),f=function n(r){function t(n){if((n=+n)<0)throw new RangeError("invalid alpha");return n=1/-n,function(){return Math.pow(1-r(),n)}}return t.source=n,t}(r),l=function n(r){function t(n){if((n=+n)<0||n>1)throw new RangeError("invalid p");return function(){return Math.floor(r()+n)}}return t.source=n,t}(r),h=function n(r){function t(n){if((n=+n)<0||n>1)throw new RangeError("invalid p");return 0===n?()=>1/0:1===n?()=>1:(n=Math.log1p(-n),function(){return 1+Math.floor(Math.log1p(-r())/n)})}return t.source=n,t}(r),s=function n(r){var t=u.source(r)();function o(n,o){if((n=+n)<0)throw new RangeError("invalid k");if(0===n)return()=>0;if(o=null==o?1:+o,1===n)return()=>-Math.log1p(-r())*o;var u=(n<1?n+1:n)-1/3,e=1/(3*Math.sqrt(u)),a=n<1?()=>Math.pow(r(),1/n):()=>1;return function(){do{do{var n=t(),i=1+e*n}while(i<=0);i*=i*i;var c=1-r()}while(c>=1-.0331*n*n*n*n&&Math.log(c)>=.5*n*n+u*(1-i+Math.log(i)));return u*i*a()*o}}return o.source=n,o}(r),d=function n(r){var t=s.source(r);function o(n,r){var o=t(n),u=t(r);return function(){var n=o();return 0===n?0:n/(n+u())}}return o.source=n,o}(r),M=function n(r){var t=h.source(r),o=d.source(r);function u(n,r){return n=+n,(r=+r)>=1?()=>n:r<=0?()=>0:function(){for(var u=0,e=n,a=r;e*a>16&&e*(1-a)>16;){var i=Math.floor((e+1)*a),c=o(i,e-i+1)();c<=a?(u+=i,e-=i,a=(a-c)/(1-c)):(e=i-1,a/=c)}for(var f=a<.5,l=t(f?a:1-a),h=l(),s=0;h<=e;++s)h+=l();return u+(f?s:e-s)}}return u.source=n,u}(r),v=function n(r){function t(n,t,o){var u;return 0==(n=+n)?u=n=>-Math.log(n):(n=1/n,u=r=>Math.pow(r,n)),t=null==t?0:+t,o=null==o?1:+o,function(){return t+o*u(-Math.log1p(-r()))}}return t.source=n,t}(r),m=function n(r){function t(n,t){return n=null==n?0:+n,t=null==t?1:+t,function(){return n+t*Math.tan(Math.PI*r())}}return t.source=n,t}(r),p=function n(r){function t(n,t){return n=null==n?0:+n,t=null==t?1:+t,function(){var o=r();return n+t*Math.log(o/(1-o))}}return t.source=n,t}(r),g=function n(r){var t=s.source(r),o=M.source(r);function u(n){return function(){for(var u=0,e=n;e>16;){var a=Math.floor(.875*e),i=t(a)();if(i>e)return u+o(a-1,e/i)();u+=a,e-=i}for(var c=-Math.log1p(-r()),f=0;c<=e;++f)c-=Math.log1p(-r());return u+f}}return u.source=n,u}(r);const w=1/4294967296;n.randomBates=i,n.randomBernoulli=l,n.randomBeta=d,n.randomBinomial=M,n.randomCauchy=m,n.randomExponential=c,n.randomGamma=s,n.randomGeometric=h,n.randomInt=o,n.randomIrwinHall=a,n.randomLcg=function(n=Math.random()){let r=0|(0<=n&&n<1?n/w:Math.abs(n));return()=>(r=1664525*r+1013904223|0,w*(r>>>0))},n.randomLogNormal=e,n.randomLogistic=p,n.randomNormal=u,n.randomPareto=f,n.randomPoisson=g,n.randomUniform=t,n.randomWeibull=v,Object.defineProperty(n,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-random/package.json b/node_modules/d3-random/package.json
new file mode 100644
index 00000000..ebbcd2dd
--- /dev/null
+++ b/node_modules/d3-random/package.json
@@ -0,0 +1,79 @@
+{
+ "_from": "d3-random@3",
+ "_id": "d3-random@3.0.1",
+ "_inBundle": false,
+ "_integrity": "sha512-FXMe9GfxTxqd5D6jFsQ+DJ8BJS4E/fT5mqqdjovykEB2oFbTMDVdg1MGFxfQW+FBOGoB++k8swBrgwSHT1cUXQ==",
+ "_location": "/d3-random",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-random@3",
+ "name": "d3-random",
+ "escapedName": "d3-random",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-random/-/d3-random-3.0.1.tgz",
+ "_shasum": "d4926378d333d9c0bfd1e6fa0194d30aebaa20f4",
+ "_spec": "d3-random@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-random/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Generate random numbers from various distributions.",
+ "devDependencies": {
+ "d3-array": "1 - 2",
+ "eslint": "7",
+ "jsdom": "16",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-random.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-random/",
+ "jsdelivr": "dist/d3-random.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "random",
+ "rng"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-random",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-random.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-random.min.js",
+ "version": "3.0.1"
+}
diff --git a/node_modules/d3-random/src/bates.js b/node_modules/d3-random/src/bates.js
new file mode 100644
index 00000000..6bafddd0
--- /dev/null
+++ b/node_modules/d3-random/src/bates.js
@@ -0,0 +1,19 @@
+import defaultSource from "./defaultSource.js";
+import irwinHall from "./irwinHall.js";
+
+export default (function sourceRandomBates(source) {
+ var I = irwinHall.source(source);
+
+ function randomBates(n) {
+ // use limiting distribution at n === 0
+ if ((n = +n) === 0) return source;
+ var randomIrwinHall = I(n);
+ return function() {
+ return randomIrwinHall() / n;
+ };
+ }
+
+ randomBates.source = sourceRandomBates;
+
+ return randomBates;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/bernoulli.js b/node_modules/d3-random/src/bernoulli.js
new file mode 100644
index 00000000..8751b433
--- /dev/null
+++ b/node_modules/d3-random/src/bernoulli.js
@@ -0,0 +1,14 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomBernoulli(source) {
+ function randomBernoulli(p) {
+ if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+ return function() {
+ return Math.floor(source() + p);
+ };
+ }
+
+ randomBernoulli.source = sourceRandomBernoulli;
+
+ return randomBernoulli;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/beta.js b/node_modules/d3-random/src/beta.js
new file mode 100644
index 00000000..15bb2b35
--- /dev/null
+++ b/node_modules/d3-random/src/beta.js
@@ -0,0 +1,19 @@
+import defaultSource from "./defaultSource.js";
+import gamma from "./gamma.js";
+
+export default (function sourceRandomBeta(source) {
+ var G = gamma.source(source);
+
+ function randomBeta(alpha, beta) {
+ var X = G(alpha),
+ Y = G(beta);
+ return function() {
+ var x = X();
+ return x === 0 ? 0 : x / (x + Y());
+ };
+ }
+
+ randomBeta.source = sourceRandomBeta;
+
+ return randomBeta;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/binomial.js b/node_modules/d3-random/src/binomial.js
new file mode 100644
index 00000000..3213b4a7
--- /dev/null
+++ b/node_modules/d3-random/src/binomial.js
@@ -0,0 +1,38 @@
+import defaultSource from "./defaultSource.js";
+import beta from "./beta.js";
+import geometric from "./geometric.js";
+
+export default (function sourceRandomBinomial(source) {
+ var G = geometric.source(source),
+ B = beta.source(source);
+
+ function randomBinomial(n, p) {
+ n = +n;
+ if ((p = +p) >= 1) return () => n;
+ if (p <= 0) return () => 0;
+ return function() {
+ var acc = 0, nn = n, pp = p;
+ while (nn * pp > 16 && nn * (1 - pp) > 16) {
+ var i = Math.floor((nn + 1) * pp),
+ y = B(i, nn - i + 1)();
+ if (y <= pp) {
+ acc += i;
+ nn -= i;
+ pp = (pp - y) / (1 - y);
+ } else {
+ nn = i - 1;
+ pp /= y;
+ }
+ }
+ var sign = pp < 0.5,
+ pFinal = sign ? pp : 1 - pp,
+ g = G(pFinal);
+ for (var s = g(), k = 0; s <= nn; ++k) s += g();
+ return acc + (sign ? k : nn - k);
+ };
+ }
+
+ randomBinomial.source = sourceRandomBinomial;
+
+ return randomBinomial;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/cauchy.js b/node_modules/d3-random/src/cauchy.js
new file mode 100644
index 00000000..95c15ca1
--- /dev/null
+++ b/node_modules/d3-random/src/cauchy.js
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomCauchy(source) {
+ function randomCauchy(a, b) {
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ return a + b * Math.tan(Math.PI * source());
+ };
+ }
+
+ randomCauchy.source = sourceRandomCauchy;
+
+ return randomCauchy;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/defaultSource.js b/node_modules/d3-random/src/defaultSource.js
new file mode 100644
index 00000000..ef54f3df
--- /dev/null
+++ b/node_modules/d3-random/src/defaultSource.js
@@ -0,0 +1 @@
+export default Math.random;
diff --git a/node_modules/d3-random/src/exponential.js b/node_modules/d3-random/src/exponential.js
new file mode 100644
index 00000000..0d4304cc
--- /dev/null
+++ b/node_modules/d3-random/src/exponential.js
@@ -0,0 +1,13 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomExponential(source) {
+ function randomExponential(lambda) {
+ return function() {
+ return -Math.log1p(-source()) / lambda;
+ };
+ }
+
+ randomExponential.source = sourceRandomExponential;
+
+ return randomExponential;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/gamma.js b/node_modules/d3-random/src/gamma.js
new file mode 100644
index 00000000..48bf7062
--- /dev/null
+++ b/node_modules/d3-random/src/gamma.js
@@ -0,0 +1,34 @@
+import defaultSource from "./defaultSource.js";
+import normal from "./normal.js";
+
+export default (function sourceRandomGamma(source) {
+ var randomNormal = normal.source(source)();
+
+ function randomGamma(k, theta) {
+ if ((k = +k) < 0) throw new RangeError("invalid k");
+ // degenerate distribution if k === 0
+ if (k === 0) return () => 0;
+ theta = theta == null ? 1 : +theta;
+ // exponential distribution if k === 1
+ if (k === 1) return () => -Math.log1p(-source()) * theta;
+
+ var d = (k < 1 ? k + 1 : k) - 1 / 3,
+ c = 1 / (3 * Math.sqrt(d)),
+ multiplier = k < 1 ? () => Math.pow(source(), 1 / k) : () => 1;
+ return function() {
+ do {
+ do {
+ var x = randomNormal(),
+ v = 1 + c * x;
+ } while (v <= 0);
+ v *= v * v;
+ var u = 1 - source();
+ } while (u >= 1 - 0.0331 * x * x * x * x && Math.log(u) >= 0.5 * x * x + d * (1 - v + Math.log(v)));
+ return d * v * multiplier() * theta;
+ };
+ }
+
+ randomGamma.source = sourceRandomGamma;
+
+ return randomGamma;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/geometric.js b/node_modules/d3-random/src/geometric.js
new file mode 100644
index 00000000..2cae2cc8
--- /dev/null
+++ b/node_modules/d3-random/src/geometric.js
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomGeometric(source) {
+ function randomGeometric(p) {
+ if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p");
+ if (p === 0) return () => Infinity;
+ if (p === 1) return () => 1;
+ p = Math.log1p(-p);
+ return function() {
+ return 1 + Math.floor(Math.log1p(-source()) / p);
+ };
+ }
+
+ randomGeometric.source = sourceRandomGeometric;
+
+ return randomGeometric;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/index.js b/node_modules/d3-random/src/index.js
new file mode 100644
index 00000000..033891e9
--- /dev/null
+++ b/node_modules/d3-random/src/index.js
@@ -0,0 +1,18 @@
+export {default as randomUniform} from "./uniform.js";
+export {default as randomInt} from "./int.js";
+export {default as randomNormal} from "./normal.js";
+export {default as randomLogNormal} from "./logNormal.js";
+export {default as randomBates} from "./bates.js";
+export {default as randomIrwinHall} from "./irwinHall.js";
+export {default as randomExponential} from "./exponential.js";
+export {default as randomPareto} from "./pareto.js";
+export {default as randomBernoulli} from "./bernoulli.js";
+export {default as randomGeometric} from "./geometric.js";
+export {default as randomBinomial} from "./binomial.js";
+export {default as randomGamma} from "./gamma.js";
+export {default as randomBeta} from "./beta.js";
+export {default as randomWeibull} from "./weibull.js";
+export {default as randomCauchy} from "./cauchy.js";
+export {default as randomLogistic} from "./logistic.js";
+export {default as randomPoisson} from "./poisson.js";
+export {default as randomLcg} from "./lcg.js";
diff --git a/node_modules/d3-random/src/int.js b/node_modules/d3-random/src/int.js
new file mode 100644
index 00000000..a47249b7
--- /dev/null
+++ b/node_modules/d3-random/src/int.js
@@ -0,0 +1,16 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomInt(source) {
+ function randomInt(min, max) {
+ if (arguments.length < 2) max = min, min = 0;
+ min = Math.floor(min);
+ max = Math.floor(max) - min;
+ return function() {
+ return Math.floor(source() * max + min);
+ };
+ }
+
+ randomInt.source = sourceRandomInt;
+
+ return randomInt;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/irwinHall.js b/node_modules/d3-random/src/irwinHall.js
new file mode 100644
index 00000000..4db5dccb
--- /dev/null
+++ b/node_modules/d3-random/src/irwinHall.js
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomIrwinHall(source) {
+ function randomIrwinHall(n) {
+ if ((n = +n) <= 0) return () => 0;
+ return function() {
+ for (var sum = 0, i = n; i > 1; --i) sum += source();
+ return sum + i * source();
+ };
+ }
+
+ randomIrwinHall.source = sourceRandomIrwinHall;
+
+ return randomIrwinHall;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/lcg.js b/node_modules/d3-random/src/lcg.js
new file mode 100644
index 00000000..fb058788
--- /dev/null
+++ b/node_modules/d3-random/src/lcg.js
@@ -0,0 +1,9 @@
+// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use
+const mul = 0x19660D;
+const inc = 0x3C6EF35F;
+const eps = 1 / 0x100000000;
+
+export default function lcg(seed = Math.random()) {
+ let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0;
+ return () => (state = mul * state + inc | 0, eps * (state >>> 0));
+}
diff --git a/node_modules/d3-random/src/logNormal.js b/node_modules/d3-random/src/logNormal.js
new file mode 100644
index 00000000..3465fba3
--- /dev/null
+++ b/node_modules/d3-random/src/logNormal.js
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+import normal from "./normal.js";
+
+export default (function sourceRandomLogNormal(source) {
+ var N = normal.source(source);
+
+ function randomLogNormal() {
+ var randomNormal = N.apply(this, arguments);
+ return function() {
+ return Math.exp(randomNormal());
+ };
+ }
+
+ randomLogNormal.source = sourceRandomLogNormal;
+
+ return randomLogNormal;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/logistic.js b/node_modules/d3-random/src/logistic.js
new file mode 100644
index 00000000..b2cda2a3
--- /dev/null
+++ b/node_modules/d3-random/src/logistic.js
@@ -0,0 +1,16 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomLogistic(source) {
+ function randomLogistic(a, b) {
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ var u = source();
+ return a + b * Math.log(u / (1 - u));
+ };
+ }
+
+ randomLogistic.source = sourceRandomLogistic;
+
+ return randomLogistic;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/normal.js b/node_modules/d3-random/src/normal.js
new file mode 100644
index 00000000..b6838d67
--- /dev/null
+++ b/node_modules/d3-random/src/normal.js
@@ -0,0 +1,28 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomNormal(source) {
+ function randomNormal(mu, sigma) {
+ var x, r;
+ mu = mu == null ? 0 : +mu;
+ sigma = sigma == null ? 1 : +sigma;
+ return function() {
+ var y;
+
+ // If available, use the second previously-generated uniform random.
+ if (x != null) y = x, x = null;
+
+ // Otherwise, generate a new x and y.
+ else do {
+ x = source() * 2 - 1;
+ y = source() * 2 - 1;
+ r = x * x + y * y;
+ } while (!r || r > 1);
+
+ return mu + sigma * y * Math.sqrt(-2 * Math.log(r) / r);
+ };
+ }
+
+ randomNormal.source = sourceRandomNormal;
+
+ return randomNormal;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/pareto.js b/node_modules/d3-random/src/pareto.js
new file mode 100644
index 00000000..e5496f0c
--- /dev/null
+++ b/node_modules/d3-random/src/pareto.js
@@ -0,0 +1,15 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomPareto(source) {
+ function randomPareto(alpha) {
+ if ((alpha = +alpha) < 0) throw new RangeError("invalid alpha");
+ alpha = 1 / -alpha;
+ return function() {
+ return Math.pow(1 - source(), alpha);
+ };
+ }
+
+ randomPareto.source = sourceRandomPareto;
+
+ return randomPareto;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/poisson.js b/node_modules/d3-random/src/poisson.js
new file mode 100644
index 00000000..da939955
--- /dev/null
+++ b/node_modules/d3-random/src/poisson.js
@@ -0,0 +1,27 @@
+import defaultSource from "./defaultSource.js";
+import binomial from "./binomial.js";
+import gamma from "./gamma.js";
+
+export default (function sourceRandomPoisson(source) {
+ var G = gamma.source(source),
+ B = binomial.source(source);
+
+ function randomPoisson(lambda) {
+ return function() {
+ var acc = 0, l = lambda;
+ while (l > 16) {
+ var n = Math.floor(0.875 * l),
+ t = G(n)();
+ if (t > l) return acc + B(n - 1, l / t)();
+ acc += n;
+ l -= t;
+ }
+ for (var s = -Math.log1p(-source()), k = 0; s <= l; ++k) s -= Math.log1p(-source());
+ return acc + k;
+ };
+ }
+
+ randomPoisson.source = sourceRandomPoisson;
+
+ return randomPoisson;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/uniform.js b/node_modules/d3-random/src/uniform.js
new file mode 100644
index 00000000..a2bc468a
--- /dev/null
+++ b/node_modules/d3-random/src/uniform.js
@@ -0,0 +1,17 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomUniform(source) {
+ function randomUniform(min, max) {
+ min = min == null ? 0 : +min;
+ max = max == null ? 1 : +max;
+ if (arguments.length === 1) max = min, min = 0;
+ else max -= min;
+ return function() {
+ return source() * max + min;
+ };
+ }
+
+ randomUniform.source = sourceRandomUniform;
+
+ return randomUniform;
+})(defaultSource);
diff --git a/node_modules/d3-random/src/weibull.js b/node_modules/d3-random/src/weibull.js
new file mode 100644
index 00000000..b7d796cc
--- /dev/null
+++ b/node_modules/d3-random/src/weibull.js
@@ -0,0 +1,22 @@
+import defaultSource from "./defaultSource.js";
+
+export default (function sourceRandomWeibull(source) {
+ function randomWeibull(k, a, b) {
+ var outerFunc;
+ if ((k = +k) === 0) {
+ outerFunc = x => -Math.log(x);
+ } else {
+ k = 1 / k;
+ outerFunc = x => Math.pow(x, k);
+ }
+ a = a == null ? 0 : +a;
+ b = b == null ? 1 : +b;
+ return function() {
+ return a + b * outerFunc(-Math.log1p(-source()));
+ };
+ }
+
+ randomWeibull.source = sourceRandomWeibull;
+
+ return randomWeibull;
+})(defaultSource);
diff --git a/node_modules/d3-scale-chromatic/LICENSE b/node_modules/d3-scale-chromatic/LICENSE
new file mode 100644
index 00000000..65f32f10
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/LICENSE
@@ -0,0 +1,28 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+Apache-Style Software License for ColorBrewer software and ColorBrewer Color Schemes
+
+Copyright 2002 Cynthia Brewer, Mark Harrower, and The Pennsylvania State University
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
diff --git a/node_modules/d3-scale-chromatic/README.md b/node_modules/d3-scale-chromatic/README.md
new file mode 100644
index 00000000..96b574b7
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/README.md
@@ -0,0 +1,387 @@
+# d3-scale-chromatic
+
+This module provides sequential, diverging and categorical color schemes designed to work with [d3-scale](https://github.com/d3/d3-scale)’s [d3.scaleOrdinal](https://github.com/d3/d3-scale#ordinal-scales) and [d3.scaleSequential](https://github.com/d3/d3-scale#sequential-scales). Most of these schemes are derived from Cynthia A. Brewer’s [ColorBrewer](http://colorbrewer2.org). Since ColorBrewer publishes only discrete color schemes, the sequential and diverging scales are interpolated using [uniform B-splines](https://bl.ocks.org/mbostock/048d21cf747371b11884f75ad896e5a5).
+
+For example, to create a categorical color scale using the [Accent](#schemeAccent) color scheme:
+
+```js
+var accent = d3.scaleOrdinal(d3.schemeAccent);
+```
+
+To create a sequential discrete nine-color scale using the [Blues](#schemeBlues) color scheme:
+
+```js
+var blues = d3.scaleOrdinal(d3.schemeBlues[9]);
+```
+
+To create a diverging, continuous color scale using the [PiYG](#interpolatePiYG) color scheme:
+
+```js
+var piyg = d3.scaleSequential(d3.interpolatePiYG);
+```
+
+## Installing
+
+If you use npm, `npm install d3-scale-chromatic`. You can also download the [latest release on GitHub](https://github.com/d3/d3-scale-chromatic/releases/latest). For vanilla HTML in modern browsers, import d3-scale-chromatic from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-scale-chromatic’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+
+```
+
+[Try d3-scale-chromatic in your browser.](https://observablehq.com/collection/@d3/d3-scale-chromatic)
+
+## API Reference
+
+### Categorical
+
+# d3.schemeCategory10 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/category10.js "Source")
+
+# d3.schemeAccent [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Accent.js "Source")
+
+# d3.schemeDark2 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Dark2.js "Source")
+
+# d3.schemePaired [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Paired.js "Source")
+
+# d3.schemePastel1 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Pastel1.js "Source")
+
+# d3.schemePastel2 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Pastel2.js "Source")
+
+# d3.schemeSet1 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Set1.js "Source")
+
+# d3.schemeSet2 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Set2.js "Source")
+
+# d3.schemeSet3 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Set3.js "Source")
+
+# d3.schemeTableau10 [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/categorical/Tableau10.js "Source")
+
+# d3.interpolateBrBG (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/BrBG.js "Source")
+# d3.schemeBrBG [*k*]
+
+# d3.interpolatePRGn (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/PRGn.js "Source")
+# d3.schemePRGn [*k*]
+
+# d3.interpolatePiYG (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/PiYG.js "Source")
+# d3.schemePiYG [*k*]
+
+# d3.interpolatePuOr (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/PuOr.js "Source")
+# d3.schemePuOr [*k*]
+
+# d3.interpolateRdBu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/RdBu.js "Source")
+# d3.schemeRdBu [*k*]
+
+# d3.interpolateRdGy (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/RdGy.js "Source")
+# d3.schemeRdGy [*k*]
+
+# d3.interpolateRdYlBu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/RdYlBu.js "Source")
+# d3.schemeRdYlBu [*k*]
+
+# d3.interpolateRdYlGn (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/RdYlGn.js "Source")
+# d3.schemeRdYlGn [*k*]
+
+# d3.interpolateSpectral (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/diverging/Spectral.js "Source")
+# d3.schemeSpectral [*k*]
+
+# d3.interpolateBlues (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Blues.js "Source")
+# d3.schemeBlues [*k*]
+
+# d3.interpolateGreens (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Greens.js "Source")
+# d3.schemeGreens [*k*]
+
+# d3.interpolateGreys (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Greys.js "Source")
+# d3.schemeGreys [*k*]
+
+# d3.interpolateOranges (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Oranges.js "Source")
+# d3.schemeOranges [*k*]
+
+# d3.interpolatePurples (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Purples.js "Source")
+# d3.schemePurples [*k*]
+
+# d3.interpolateReds (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-single/Reds.js "Source")
+# d3.schemeReds [*k*]
+
+# d3.interpolateTurbo (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/turbo.js "Source")
+
+# d3.interpolateViridis (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/viridis.js "Source")
+
+# d3.interpolateInferno (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/viridis.js "Source")
+
+# d3.interpolateMagma (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/viridis.js "Source")
+
+# d3.interpolatePlasma (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/viridis.js "Source")
+
+# d3.interpolateCividis (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/cividis.js "Source")
+
+# d3.interpolateWarm (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/rainbow.js "Source")
+
+# d3.interpolateCool (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/rainbow.js "Source")
+
+# d3.interpolateCubehelixDefault (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/cubehelix.js "Source")
+
+# d3.interpolateBuGn (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/BuGn.js "Source")
+# d3.schemeBuGn [*k*]
+
+# d3.interpolateBuPu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/BuPu.js "Source")
+# d3.schemeBuPu [*k*]
+
+# d3.interpolateGnBu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/GnBu.js "Source")
+# d3.schemeGnBu [*k*]
+
+# d3.interpolateOrRd (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/OrRd.js "Source")
+# d3.schemeOrRd [*k*]
+
+# d3.interpolatePuBuGn (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/PuBuGn.js "Source")
+# d3.schemePuBuGn [*k*]
+
+# d3.interpolatePuBu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/PuBu.js "Source")
+# d3.schemePuBu [*k*]
+
+# d3.interpolatePuRd (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/PuRd.js "Source")
+# d3.schemePuRd [*k*]
+
+# d3.interpolateRdPu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/RdPu.js "Source")
+# d3.schemeRdPu [*k*]
+
+# d3.interpolateYlGnBu (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/YlGnBu.js "Source")
+# d3.schemeYlGnBu [*k*]
+
+# d3.interpolateYlGn (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/YlGn.js "Source")
+# d3.schemeYlGn [*k*]
+
+# d3.interpolateYlOrBr (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/YlOrBr.js "Source")
+# d3.schemeYlOrBr [*k*]
+
+# d3.interpolateYlOrRd (*t*) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/YlOrRd.js "Source")
+# d3.schemeYlOrRd [*k*]
+
+# d3.interpolateRainbow (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/rainbow.js "Source")
+
+# d3.interpolateSinebow (t ) [<>](https://github.com/d3/d3-scale-chromatic/blob/master/src/sequential-multi/sinebow.js "Source")
+
+e.interpolateRgbBasis(f[f.length-1]),u=new Array(3).concat("d8b365f5f5f55ab4ac","a6611adfc27d80cdc1018571","a6611adfc27df5f5f580cdc1018571","8c510ad8b365f6e8c3c7eae55ab4ac01665e","8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e","8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e","8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e","5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30","5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30").map(a),s=p(u),y=new Array(3).concat("af8dc3f7f7f77fbf7b","7b3294c2a5cfa6dba0008837","7b3294c2a5cff7f7f7a6dba0008837","762a83af8dc3e7d4e8d9f0d37fbf7b1b7837","762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837","762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837","762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837","40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b","40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b").map(a),M=p(y),w=new Array(3).concat("e9a3c9f7f7f7a1d76a","d01c8bf1b6dab8e1864dac26","d01c8bf1b6daf7f7f7b8e1864dac26","c51b7de9a3c9fde0efe6f5d0a1d76a4d9221","c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221","c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221","c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221","8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419","8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419").map(a),A=p(w),P=new Array(3).concat("998ec3f7f7f7f1a340","5e3c99b2abd2fdb863e66101","5e3c99b2abd2f7f7f7fdb863e66101","542788998ec3d8daebfee0b6f1a340b35806","542788998ec3d8daebf7f7f7fee0b6f1a340b35806","5427888073acb2abd2d8daebfee0b6fdb863e08214b35806","5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806","2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08","2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08").map(a),B=p(P),G=new Array(3).concat("ef8a62f7f7f767a9cf","ca0020f4a58292c5de0571b0","ca0020f4a582f7f7f792c5de0571b0","b2182bef8a62fddbc7d1e5f067a9cf2166ac","b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac","b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac","b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac","67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061","67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061").map(a),x=p(G),R=new Array(3).concat("ef8a62ffffff999999","ca0020f4a582bababa404040","ca0020f4a582ffffffbababa404040","b2182bef8a62fddbc7e0e0e09999994d4d4d","b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d","b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d","b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d","67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a","67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a").map(a),g=p(R),Y=new Array(3).concat("fc8d59ffffbf91bfdb","d7191cfdae61abd9e92c7bb6","d7191cfdae61ffffbfabd9e92c7bb6","d73027fc8d59fee090e0f3f891bfdb4575b4","d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4","d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4","d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4","a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695","a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695").map(a),O=p(Y),v=new Array(3).concat("fc8d59ffffbf91cf60","d7191cfdae61a6d96a1a9641","d7191cfdae61ffffbfa6d96a1a9641","d73027fc8d59fee08bd9ef8b91cf601a9850","d73027fc8d59fee08bffffbfd9ef8b91cf601a9850","d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850","d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850","a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837","a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837").map(a),C=p(v),S=new Array(3).concat("fc8d59ffffbf99d594","d7191cfdae61abdda42b83ba","d7191cfdae61ffffbfabdda42b83ba","d53e4ffc8d59fee08be6f59899d5943288bd","d53e4ffc8d59fee08bffffbfe6f59899d5943288bd","d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd","d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd","9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2","9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2").map(a),I=p(S),T=new Array(3).concat("e5f5f999d8c92ca25f","edf8fbb2e2e266c2a4238b45","edf8fbb2e2e266c2a42ca25f006d2c","edf8fbccece699d8c966c2a42ca25f006d2c","edf8fbccece699d8c966c2a441ae76238b45005824","f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824","f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b").map(a),L=p(T),j=new 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f=Math.max(0,Math.min(1,f)),"rgb("+Math.max(0,Math.min(255,Math.round(-4.54-f*(35.34-f*(2381.73-f*(6402.7-f*(7024.72-2710.57*f)))))))+", "+Math.max(0,Math.min(255,Math.round(32.49+f*(170.73+f*(52.82-f*(131.46-f*(176.58-67.37*f)))))))+", "+Math.max(0,Math.min(255,Math.round(81.24+f*(442.36-f*(2482.43-f*(6167.24-f*(6614.94-2475.67*f)))))))+")"},f.interpolateCool=Mf,f.interpolateCubehelixDefault=sf,f.interpolateGnBu=_,f.interpolateGreens=tf,f.interpolateGreys=rf,f.interpolateInferno=gf,f.interpolateMagma=Rf,f.interpolateOrRd=V,f.interpolateOranges=uf,f.interpolatePRGn=M,f.interpolatePiYG=A,f.interpolatePlasma=Yf,f.interpolatePuBu=F,f.interpolatePuBuGn=z,f.interpolatePuOr=B,f.interpolatePuRd=J,f.interpolatePurples=lf,f.interpolateRainbow=function(f){(f<0||f>1)&&(f-=Math.floor(f));var e=Math.abs(f-.5);return wf.h=360*f-100,wf.s=1.5-1.5*e,wf.l=.8-.9*e,wf+""},f.interpolateRdBu=x,f.interpolateRdGy=g,f.interpolateRdPu=N,f.interpolateRdYlBu=O,f.interpolateRdYlGn=C,f.interpolateReds=mf,f.interpolateSinebow=function(f){var e;return f=(.5-f)*Math.PI,Af.r=255*(e=Math.sin(f))*e,Af.g=255*(e=Math.sin(f+Pf))*e,Af.b=255*(e=Math.sin(f+Bf))*e,Af+""},f.interpolateSpectral=I,f.interpolateTurbo=function(f){return f=Math.max(0,Math.min(1,f)),"rgb("+Math.max(0,Math.min(255,Math.round(34.61+f*(1172.33-f*(10793.56-f*(33300.12-f*(38394.49-14825.05*f)))))))+", "+Math.max(0,Math.min(255,Math.round(23.31+f*(557.33+f*(1225.33-f*(3574.96-f*(1073.77+707.56*f)))))))+", "+Math.max(0,Math.min(255,Math.round(27.2+f*(3211.1-f*(15327.97-f*(27814-f*(22569.18-6838.66*f)))))))+")"},f.interpolateViridis=xf,f.interpolateWarm=yf,f.interpolateYlGn=Z,f.interpolateYlGnBu=U,f.interpolateYlOrBr=ff,f.interpolateYlOrRd=df,f.schemeAccent=b,f.schemeBlues=af,f.schemeBrBG=u,f.schemeBuGn=T,f.schemeBuPu=j,f.schemeCategory10=c,f.schemeDark2=t,f.schemeGnBu=D,f.schemeGreens=bf,f.schemeGreys=nf,f.schemeOrRd=k,f.schemeOranges=pf,f.schemePRGn=y,f.schemePaired=n,f.schemePastel1=r,f.schemePastel2=o,f.schemePiYG=w,f.schemePuBu=E,f.schemePuBuGn=W,f.schemePuOr=P,f.schemePuRd=H,f.schemePurples=of,f.schemeRdBu=G,f.schemeRdGy=R,f.schemeRdPu=K,f.schemeRdYlBu=Y,f.schemeRdYlGn=v,f.schemeReds=hf,f.schemeSet1=i,f.schemeSet2=l,f.schemeSet3=h,f.schemeSpectral=S,f.schemeTableau10=m,f.schemeYlGn=X,f.schemeYlGnBu=Q,f.schemeYlOrBr=$,f.schemeYlOrRd=ef,Object.defineProperty(f,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-scale-chromatic/package.json b/node_modules/d3-scale-chromatic/package.json
new file mode 100644
index 00000000..efb23a44
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/package.json
@@ -0,0 +1,83 @@
+{
+ "_from": "d3-scale-chromatic@3",
+ "_id": "d3-scale-chromatic@3.0.0",
+ "_inBundle": false,
+ "_integrity": "sha512-Lx9thtxAKrO2Pq6OO2Ua474opeziKr279P/TKZsMAhYyNDD3EnCffdbgeSYN5O7m2ByQsxtuP2CSDczNUIZ22g==",
+ "_location": "/d3-scale-chromatic",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-scale-chromatic@3",
+ "name": "d3-scale-chromatic",
+ "escapedName": "d3-scale-chromatic",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-scale-chromatic/-/d3-scale-chromatic-3.0.0.tgz",
+ "_shasum": "15b4ceb8ca2bb0dcb6d1a641ee03d59c3b62376a",
+ "_spec": "d3-scale-chromatic@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "https://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-scale-chromatic/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-color": "1 - 3",
+ "d3-interpolate": "1 - 3"
+ },
+ "deprecated": false,
+ "description": "Sequential, diverging and categorical color schemes.",
+ "devDependencies": {
+ "eslint": "7",
+ "mocha": "8",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-scale-chromatic.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-scale-chromatic/",
+ "jsdelivr": "dist/d3-scale-chromatic.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "color",
+ "scale",
+ "sequential",
+ "colorbrewer"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-scale-chromatic",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-scale-chromatic.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-scale-chromatic.min.js",
+ "version": "3.0.0"
+}
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Accent.js b/node_modules/d3-scale-chromatic/src/categorical/Accent.js
new file mode 100644
index 00000000..3a1a9fd4
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Accent.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("7fc97fbeaed4fdc086ffff99386cb0f0027fbf5b17666666");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Dark2.js b/node_modules/d3-scale-chromatic/src/categorical/Dark2.js
new file mode 100644
index 00000000..1fe995da
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Dark2.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("1b9e77d95f027570b3e7298a66a61ee6ab02a6761d666666");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Paired.js b/node_modules/d3-scale-chromatic/src/categorical/Paired.js
new file mode 100644
index 00000000..831fba32
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Paired.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("a6cee31f78b4b2df8a33a02cfb9a99e31a1cfdbf6fff7f00cab2d66a3d9affff99b15928");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Pastel1.js b/node_modules/d3-scale-chromatic/src/categorical/Pastel1.js
new file mode 100644
index 00000000..d39c8034
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Pastel1.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("fbb4aeb3cde3ccebc5decbe4fed9a6ffffcce5d8bdfddaecf2f2f2");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Pastel2.js b/node_modules/d3-scale-chromatic/src/categorical/Pastel2.js
new file mode 100644
index 00000000..342e3ce3
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Pastel2.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("b3e2cdfdcdaccbd5e8f4cae4e6f5c9fff2aef1e2cccccccc");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Set1.js b/node_modules/d3-scale-chromatic/src/categorical/Set1.js
new file mode 100644
index 00000000..408887ba
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Set1.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("e41a1c377eb84daf4a984ea3ff7f00ffff33a65628f781bf999999");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Set2.js b/node_modules/d3-scale-chromatic/src/categorical/Set2.js
new file mode 100644
index 00000000..9aa80301
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Set2.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("66c2a5fc8d628da0cbe78ac3a6d854ffd92fe5c494b3b3b3");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Set3.js b/node_modules/d3-scale-chromatic/src/categorical/Set3.js
new file mode 100644
index 00000000..d3b9b27d
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Set3.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9bc80bdccebc5ffed6f");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/Tableau10.js b/node_modules/d3-scale-chromatic/src/categorical/Tableau10.js
new file mode 100644
index 00000000..370c9502
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/Tableau10.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("4e79a7f28e2ce1575976b7b259a14fedc949af7aa1ff9da79c755fbab0ab");
diff --git a/node_modules/d3-scale-chromatic/src/categorical/category10.js b/node_modules/d3-scale-chromatic/src/categorical/category10.js
new file mode 100644
index 00000000..9adcd019
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/categorical/category10.js
@@ -0,0 +1,3 @@
+import colors from "../colors.js";
+
+export default colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf");
diff --git a/node_modules/d3-scale-chromatic/src/colors.js b/node_modules/d3-scale-chromatic/src/colors.js
new file mode 100644
index 00000000..aeedad53
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/colors.js
@@ -0,0 +1,5 @@
+export default function(specifier) {
+ var n = specifier.length / 6 | 0, colors = new Array(n), i = 0;
+ while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6);
+ return colors;
+}
diff --git a/node_modules/d3-scale-chromatic/src/diverging/BrBG.js b/node_modules/d3-scale-chromatic/src/diverging/BrBG.js
new file mode 100644
index 00000000..6a467f7c
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/BrBG.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "d8b365f5f5f55ab4ac",
+ "a6611adfc27d80cdc1018571",
+ "a6611adfc27df5f5f580cdc1018571",
+ "8c510ad8b365f6e8c3c7eae55ab4ac01665e",
+ "8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e",
+ "8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e",
+ "8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e",
+ "5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30",
+ "5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/PRGn.js b/node_modules/d3-scale-chromatic/src/diverging/PRGn.js
new file mode 100644
index 00000000..dd278aa3
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/PRGn.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "af8dc3f7f7f77fbf7b",
+ "7b3294c2a5cfa6dba0008837",
+ "7b3294c2a5cff7f7f7a6dba0008837",
+ "762a83af8dc3e7d4e8d9f0d37fbf7b1b7837",
+ "762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837",
+ "762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837",
+ "762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837",
+ "40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b",
+ "40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/PiYG.js b/node_modules/d3-scale-chromatic/src/diverging/PiYG.js
new file mode 100644
index 00000000..43ef32d7
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/PiYG.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e9a3c9f7f7f7a1d76a",
+ "d01c8bf1b6dab8e1864dac26",
+ "d01c8bf1b6daf7f7f7b8e1864dac26",
+ "c51b7de9a3c9fde0efe6f5d0a1d76a4d9221",
+ "c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221",
+ "c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221",
+ "c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221",
+ "8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419",
+ "8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/PuOr.js b/node_modules/d3-scale-chromatic/src/diverging/PuOr.js
new file mode 100644
index 00000000..770ef90f
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/PuOr.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "998ec3f7f7f7f1a340",
+ "5e3c99b2abd2fdb863e66101",
+ "5e3c99b2abd2f7f7f7fdb863e66101",
+ "542788998ec3d8daebfee0b6f1a340b35806",
+ "542788998ec3d8daebf7f7f7fee0b6f1a340b35806",
+ "5427888073acb2abd2d8daebfee0b6fdb863e08214b35806",
+ "5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806",
+ "2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08",
+ "2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/RdBu.js b/node_modules/d3-scale-chromatic/src/diverging/RdBu.js
new file mode 100644
index 00000000..703d61c5
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/RdBu.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "ef8a62f7f7f767a9cf",
+ "ca0020f4a58292c5de0571b0",
+ "ca0020f4a582f7f7f792c5de0571b0",
+ "b2182bef8a62fddbc7d1e5f067a9cf2166ac",
+ "b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac",
+ "b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac",
+ "b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac",
+ "67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061",
+ "67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/RdGy.js b/node_modules/d3-scale-chromatic/src/diverging/RdGy.js
new file mode 100644
index 00000000..b4deb6a0
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/RdGy.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "ef8a62ffffff999999",
+ "ca0020f4a582bababa404040",
+ "ca0020f4a582ffffffbababa404040",
+ "b2182bef8a62fddbc7e0e0e09999994d4d4d",
+ "b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d",
+ "b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d",
+ "b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d",
+ "67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a",
+ "67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/RdYlBu.js b/node_modules/d3-scale-chromatic/src/diverging/RdYlBu.js
new file mode 100644
index 00000000..ad1a4128
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/RdYlBu.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fc8d59ffffbf91bfdb",
+ "d7191cfdae61abd9e92c7bb6",
+ "d7191cfdae61ffffbfabd9e92c7bb6",
+ "d73027fc8d59fee090e0f3f891bfdb4575b4",
+ "d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4",
+ "d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4",
+ "d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4",
+ "a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695",
+ "a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/RdYlGn.js b/node_modules/d3-scale-chromatic/src/diverging/RdYlGn.js
new file mode 100644
index 00000000..3cd897e1
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/RdYlGn.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fc8d59ffffbf91cf60",
+ "d7191cfdae61a6d96a1a9641",
+ "d7191cfdae61ffffbfa6d96a1a9641",
+ "d73027fc8d59fee08bd9ef8b91cf601a9850",
+ "d73027fc8d59fee08bffffbfd9ef8b91cf601a9850",
+ "d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850",
+ "d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850",
+ "a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837",
+ "a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/diverging/Spectral.js b/node_modules/d3-scale-chromatic/src/diverging/Spectral.js
new file mode 100644
index 00000000..cd1e1085
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/diverging/Spectral.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fc8d59ffffbf99d594",
+ "d7191cfdae61abdda42b83ba",
+ "d7191cfdae61ffffbfabdda42b83ba",
+ "d53e4ffc8d59fee08be6f59899d5943288bd",
+ "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd",
+ "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd",
+ "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd",
+ "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2",
+ "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/index.js b/node_modules/d3-scale-chromatic/src/index.js
new file mode 100644
index 00000000..3170296b
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/index.js
@@ -0,0 +1,43 @@
+export {default as schemeCategory10} from "./categorical/category10.js";
+export {default as schemeAccent} from "./categorical/Accent.js";
+export {default as schemeDark2} from "./categorical/Dark2.js";
+export {default as schemePaired} from "./categorical/Paired.js";
+export {default as schemePastel1} from "./categorical/Pastel1.js";
+export {default as schemePastel2} from "./categorical/Pastel2.js";
+export {default as schemeSet1} from "./categorical/Set1.js";
+export {default as schemeSet2} from "./categorical/Set2.js";
+export {default as schemeSet3} from "./categorical/Set3.js";
+export {default as schemeTableau10} from "./categorical/Tableau10.js";
+export {default as interpolateBrBG, scheme as schemeBrBG} from "./diverging/BrBG.js";
+export {default as interpolatePRGn, scheme as schemePRGn} from "./diverging/PRGn.js";
+export {default as interpolatePiYG, scheme as schemePiYG} from "./diverging/PiYG.js";
+export {default as interpolatePuOr, scheme as schemePuOr} from "./diverging/PuOr.js";
+export {default as interpolateRdBu, scheme as schemeRdBu} from "./diverging/RdBu.js";
+export {default as interpolateRdGy, scheme as schemeRdGy} from "./diverging/RdGy.js";
+export {default as interpolateRdYlBu, scheme as schemeRdYlBu} from "./diverging/RdYlBu.js";
+export {default as interpolateRdYlGn, scheme as schemeRdYlGn} from "./diverging/RdYlGn.js";
+export {default as interpolateSpectral, scheme as schemeSpectral} from "./diverging/Spectral.js";
+export {default as interpolateBuGn, scheme as schemeBuGn} from "./sequential-multi/BuGn.js";
+export {default as interpolateBuPu, scheme as schemeBuPu} from "./sequential-multi/BuPu.js";
+export {default as interpolateGnBu, scheme as schemeGnBu} from "./sequential-multi/GnBu.js";
+export {default as interpolateOrRd, scheme as schemeOrRd} from "./sequential-multi/OrRd.js";
+export {default as interpolatePuBuGn, scheme as schemePuBuGn} from "./sequential-multi/PuBuGn.js";
+export {default as interpolatePuBu, scheme as schemePuBu} from "./sequential-multi/PuBu.js";
+export {default as interpolatePuRd, scheme as schemePuRd} from "./sequential-multi/PuRd.js";
+export {default as interpolateRdPu, scheme as schemeRdPu} from "./sequential-multi/RdPu.js";
+export {default as interpolateYlGnBu, scheme as schemeYlGnBu} from "./sequential-multi/YlGnBu.js";
+export {default as interpolateYlGn, scheme as schemeYlGn} from "./sequential-multi/YlGn.js";
+export {default as interpolateYlOrBr, scheme as schemeYlOrBr} from "./sequential-multi/YlOrBr.js";
+export {default as interpolateYlOrRd, scheme as schemeYlOrRd} from "./sequential-multi/YlOrRd.js";
+export {default as interpolateBlues, scheme as schemeBlues} from "./sequential-single/Blues.js";
+export {default as interpolateGreens, scheme as schemeGreens} from "./sequential-single/Greens.js";
+export {default as interpolateGreys, scheme as schemeGreys} from "./sequential-single/Greys.js";
+export {default as interpolatePurples, scheme as schemePurples} from "./sequential-single/Purples.js";
+export {default as interpolateReds, scheme as schemeReds} from "./sequential-single/Reds.js";
+export {default as interpolateOranges, scheme as schemeOranges} from "./sequential-single/Oranges.js";
+export {default as interpolateCividis} from "./sequential-multi/cividis.js";
+export {default as interpolateCubehelixDefault} from "./sequential-multi/cubehelix.js";
+export {default as interpolateRainbow, warm as interpolateWarm, cool as interpolateCool} from "./sequential-multi/rainbow.js";
+export {default as interpolateSinebow} from "./sequential-multi/sinebow.js";
+export {default as interpolateTurbo} from "./sequential-multi/turbo.js";
+export {default as interpolateViridis, magma as interpolateMagma, inferno as interpolateInferno, plasma as interpolatePlasma} from "./sequential-multi/viridis.js";
diff --git a/node_modules/d3-scale-chromatic/src/ramp.js b/node_modules/d3-scale-chromatic/src/ramp.js
new file mode 100644
index 00000000..14f40508
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/ramp.js
@@ -0,0 +1,3 @@
+import {interpolateRgbBasis} from "d3-interpolate";
+
+export default scheme => interpolateRgbBasis(scheme[scheme.length - 1]);
diff --git a/node_modules/d3-scale-chromatic/src/rampClosed.js b/node_modules/d3-scale-chromatic/src/rampClosed.js
new file mode 100644
index 00000000..217d5024
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/rampClosed.js
@@ -0,0 +1,9 @@
+import {scaleSequential} from "d3-scale";
+import {interpolateRgbBasisClosed} from "d3-interpolate";
+import colors from "./colors.js";
+
+export default function(range) {
+ var s = scaleSequential(interpolateRgbBasisClosed(colors(range))).clamp(true);
+ delete s.clamp;
+ return s;
+}
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/BuGn.js b/node_modules/d3-scale-chromatic/src/sequential-multi/BuGn.js
new file mode 100644
index 00000000..bfd4ff4a
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/BuGn.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e5f5f999d8c92ca25f",
+ "edf8fbb2e2e266c2a4238b45",
+ "edf8fbb2e2e266c2a42ca25f006d2c",
+ "edf8fbccece699d8c966c2a42ca25f006d2c",
+ "edf8fbccece699d8c966c2a441ae76238b45005824",
+ "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824",
+ "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/BuPu.js b/node_modules/d3-scale-chromatic/src/sequential-multi/BuPu.js
new file mode 100644
index 00000000..7b6b7cc8
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/BuPu.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e0ecf49ebcda8856a7",
+ "edf8fbb3cde38c96c688419d",
+ "edf8fbb3cde38c96c68856a7810f7c",
+ "edf8fbbfd3e69ebcda8c96c68856a7810f7c",
+ "edf8fbbfd3e69ebcda8c96c68c6bb188419d6e016b",
+ "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d6e016b",
+ "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d810f7c4d004b"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/GnBu.js b/node_modules/d3-scale-chromatic/src/sequential-multi/GnBu.js
new file mode 100644
index 00000000..0e1a31c6
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/GnBu.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e0f3dba8ddb543a2ca",
+ "f0f9e8bae4bc7bccc42b8cbe",
+ "f0f9e8bae4bc7bccc443a2ca0868ac",
+ "f0f9e8ccebc5a8ddb57bccc443a2ca0868ac",
+ "f0f9e8ccebc5a8ddb57bccc44eb3d32b8cbe08589e",
+ "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe08589e",
+ "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe0868ac084081"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/OrRd.js b/node_modules/d3-scale-chromatic/src/sequential-multi/OrRd.js
new file mode 100644
index 00000000..6726f75b
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/OrRd.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fee8c8fdbb84e34a33",
+ "fef0d9fdcc8afc8d59d7301f",
+ "fef0d9fdcc8afc8d59e34a33b30000",
+ "fef0d9fdd49efdbb84fc8d59e34a33b30000",
+ "fef0d9fdd49efdbb84fc8d59ef6548d7301f990000",
+ "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301f990000",
+ "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301fb300007f0000"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/PuBu.js b/node_modules/d3-scale-chromatic/src/sequential-multi/PuBu.js
new file mode 100644
index 00000000..4a632812
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/PuBu.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "ece7f2a6bddb2b8cbe",
+ "f1eef6bdc9e174a9cf0570b0",
+ "f1eef6bdc9e174a9cf2b8cbe045a8d",
+ "f1eef6d0d1e6a6bddb74a9cf2b8cbe045a8d",
+ "f1eef6d0d1e6a6bddb74a9cf3690c00570b0034e7b",
+ "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0034e7b",
+ "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0045a8d023858"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/PuBuGn.js b/node_modules/d3-scale-chromatic/src/sequential-multi/PuBuGn.js
new file mode 100644
index 00000000..11a60d4c
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/PuBuGn.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "ece2f0a6bddb1c9099",
+ "f6eff7bdc9e167a9cf02818a",
+ "f6eff7bdc9e167a9cf1c9099016c59",
+ "f6eff7d0d1e6a6bddb67a9cf1c9099016c59",
+ "f6eff7d0d1e6a6bddb67a9cf3690c002818a016450",
+ "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016450",
+ "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016c59014636"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/PuRd.js b/node_modules/d3-scale-chromatic/src/sequential-multi/PuRd.js
new file mode 100644
index 00000000..2d9e1435
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/PuRd.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e7e1efc994c7dd1c77",
+ "f1eef6d7b5d8df65b0ce1256",
+ "f1eef6d7b5d8df65b0dd1c77980043",
+ "f1eef6d4b9dac994c7df65b0dd1c77980043",
+ "f1eef6d4b9dac994c7df65b0e7298ace125691003f",
+ "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125691003f",
+ "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125698004367001f"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/RdPu.js b/node_modules/d3-scale-chromatic/src/sequential-multi/RdPu.js
new file mode 100644
index 00000000..680a5b13
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/RdPu.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fde0ddfa9fb5c51b8a",
+ "feebe2fbb4b9f768a1ae017e",
+ "feebe2fbb4b9f768a1c51b8a7a0177",
+ "feebe2fcc5c0fa9fb5f768a1c51b8a7a0177",
+ "feebe2fcc5c0fa9fb5f768a1dd3497ae017e7a0177",
+ "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a0177",
+ "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a017749006a"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/YlGn.js b/node_modules/d3-scale-chromatic/src/sequential-multi/YlGn.js
new file mode 100644
index 00000000..883ce593
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/YlGn.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "f7fcb9addd8e31a354",
+ "ffffccc2e69978c679238443",
+ "ffffccc2e69978c67931a354006837",
+ "ffffccd9f0a3addd8e78c67931a354006837",
+ "ffffccd9f0a3addd8e78c67941ab5d238443005a32",
+ "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443005a32",
+ "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443006837004529"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/YlGnBu.js b/node_modules/d3-scale-chromatic/src/sequential-multi/YlGnBu.js
new file mode 100644
index 00000000..d002b3d5
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/YlGnBu.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "edf8b17fcdbb2c7fb8",
+ "ffffcca1dab441b6c4225ea8",
+ "ffffcca1dab441b6c42c7fb8253494",
+ "ffffccc7e9b47fcdbb41b6c42c7fb8253494",
+ "ffffccc7e9b47fcdbb41b6c41d91c0225ea80c2c84",
+ "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea80c2c84",
+ "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea8253494081d58"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrBr.js b/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrBr.js
new file mode 100644
index 00000000..cb32c44a
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrBr.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fff7bcfec44fd95f0e",
+ "ffffd4fed98efe9929cc4c02",
+ "ffffd4fed98efe9929d95f0e993404",
+ "ffffd4fee391fec44ffe9929d95f0e993404",
+ "ffffd4fee391fec44ffe9929ec7014cc4c028c2d04",
+ "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c028c2d04",
+ "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c02993404662506"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrRd.js b/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrRd.js
new file mode 100644
index 00000000..6c314bad
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/YlOrRd.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "ffeda0feb24cf03b20",
+ "ffffb2fecc5cfd8d3ce31a1c",
+ "ffffb2fecc5cfd8d3cf03b20bd0026",
+ "ffffb2fed976feb24cfd8d3cf03b20bd0026",
+ "ffffb2fed976feb24cfd8d3cfc4e2ae31a1cb10026",
+ "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cb10026",
+ "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cbd0026800026"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/cividis.js b/node_modules/d3-scale-chromatic/src/sequential-multi/cividis.js
new file mode 100644
index 00000000..46da9aba
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/cividis.js
@@ -0,0 +1,8 @@
+export default function(t) {
+ t = Math.max(0, Math.min(1, t));
+ return "rgb("
+ + Math.max(0, Math.min(255, Math.round(-4.54 - t * (35.34 - t * (2381.73 - t * (6402.7 - t * (7024.72 - t * 2710.57))))))) + ", "
+ + Math.max(0, Math.min(255, Math.round(32.49 + t * (170.73 + t * (52.82 - t * (131.46 - t * (176.58 - t * 67.37))))))) + ", "
+ + Math.max(0, Math.min(255, Math.round(81.24 + t * (442.36 - t * (2482.43 - t * (6167.24 - t * (6614.94 - t * 2475.67)))))))
+ + ")";
+}
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/cubehelix.js b/node_modules/d3-scale-chromatic/src/sequential-multi/cubehelix.js
new file mode 100644
index 00000000..7e9be127
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/cubehelix.js
@@ -0,0 +1,4 @@
+import {cubehelix} from "d3-color";
+import {interpolateCubehelixLong} from "d3-interpolate";
+
+export default interpolateCubehelixLong(cubehelix(300, 0.5, 0.0), cubehelix(-240, 0.5, 1.0));
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/rainbow.js b/node_modules/d3-scale-chromatic/src/sequential-multi/rainbow.js
new file mode 100644
index 00000000..b33cd35a
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/rainbow.js
@@ -0,0 +1,17 @@
+import {cubehelix} from "d3-color";
+import {interpolateCubehelixLong} from "d3-interpolate";
+
+export var warm = interpolateCubehelixLong(cubehelix(-100, 0.75, 0.35), cubehelix(80, 1.50, 0.8));
+
+export var cool = interpolateCubehelixLong(cubehelix(260, 0.75, 0.35), cubehelix(80, 1.50, 0.8));
+
+var c = cubehelix();
+
+export default function(t) {
+ if (t < 0 || t > 1) t -= Math.floor(t);
+ var ts = Math.abs(t - 0.5);
+ c.h = 360 * t - 100;
+ c.s = 1.5 - 1.5 * ts;
+ c.l = 0.8 - 0.9 * ts;
+ return c + "";
+}
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/sinebow.js b/node_modules/d3-scale-chromatic/src/sequential-multi/sinebow.js
new file mode 100644
index 00000000..09eb2de9
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/sinebow.js
@@ -0,0 +1,14 @@
+import {rgb} from "d3-color";
+
+var c = rgb(),
+ pi_1_3 = Math.PI / 3,
+ pi_2_3 = Math.PI * 2 / 3;
+
+export default function(t) {
+ var x;
+ t = (0.5 - t) * Math.PI;
+ c.r = 255 * (x = Math.sin(t)) * x;
+ c.g = 255 * (x = Math.sin(t + pi_1_3)) * x;
+ c.b = 255 * (x = Math.sin(t + pi_2_3)) * x;
+ return c + "";
+}
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/turbo.js b/node_modules/d3-scale-chromatic/src/sequential-multi/turbo.js
new file mode 100644
index 00000000..31ae8a44
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/turbo.js
@@ -0,0 +1,8 @@
+export default function(t) {
+ t = Math.max(0, Math.min(1, t));
+ return "rgb("
+ + Math.max(0, Math.min(255, Math.round(34.61 + t * (1172.33 - t * (10793.56 - t * (33300.12 - t * (38394.49 - t * 14825.05))))))) + ", "
+ + Math.max(0, Math.min(255, Math.round(23.31 + t * (557.33 + t * (1225.33 - t * (3574.96 - t * (1073.77 + t * 707.56))))))) + ", "
+ + Math.max(0, Math.min(255, Math.round(27.2 + t * (3211.1 - t * (15327.97 - t * (27814 - t * (22569.18 - t * 6838.66)))))))
+ + ")";
+}
diff --git a/node_modules/d3-scale-chromatic/src/sequential-multi/viridis.js b/node_modules/d3-scale-chromatic/src/sequential-multi/viridis.js
new file mode 100644
index 00000000..2eeb758f
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-multi/viridis.js
@@ -0,0 +1,16 @@
+import colors from "../colors.js";
+
+function ramp(range) {
+ var n = range.length;
+ return function(t) {
+ return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))];
+ };
+}
+
+export default ramp(colors("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"));
+
+export var magma = ramp(colors("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"));
+
+export var inferno = ramp(colors("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"));
+
+export var plasma = ramp(colors("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"));
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Blues.js b/node_modules/d3-scale-chromatic/src/sequential-single/Blues.js
new file mode 100644
index 00000000..7acfdd31
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Blues.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "deebf79ecae13182bd",
+ "eff3ffbdd7e76baed62171b5",
+ "eff3ffbdd7e76baed63182bd08519c",
+ "eff3ffc6dbef9ecae16baed63182bd08519c",
+ "eff3ffc6dbef9ecae16baed64292c62171b5084594",
+ "f7fbffdeebf7c6dbef9ecae16baed64292c62171b5084594",
+ "f7fbffdeebf7c6dbef9ecae16baed64292c62171b508519c08306b"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Greens.js b/node_modules/d3-scale-chromatic/src/sequential-single/Greens.js
new file mode 100644
index 00000000..48eb102e
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Greens.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "e5f5e0a1d99b31a354",
+ "edf8e9bae4b374c476238b45",
+ "edf8e9bae4b374c47631a354006d2c",
+ "edf8e9c7e9c0a1d99b74c47631a354006d2c",
+ "edf8e9c7e9c0a1d99b74c47641ab5d238b45005a32",
+ "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45005a32",
+ "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45006d2c00441b"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Greys.js b/node_modules/d3-scale-chromatic/src/sequential-single/Greys.js
new file mode 100644
index 00000000..315ca0a1
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Greys.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "f0f0f0bdbdbd636363",
+ "f7f7f7cccccc969696525252",
+ "f7f7f7cccccc969696636363252525",
+ "f7f7f7d9d9d9bdbdbd969696636363252525",
+ "f7f7f7d9d9d9bdbdbd969696737373525252252525",
+ "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525",
+ "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Oranges.js b/node_modules/d3-scale-chromatic/src/sequential-single/Oranges.js
new file mode 100644
index 00000000..392bf233
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Oranges.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fee6cefdae6be6550d",
+ "feeddefdbe85fd8d3cd94701",
+ "feeddefdbe85fd8d3ce6550da63603",
+ "feeddefdd0a2fdae6bfd8d3ce6550da63603",
+ "feeddefdd0a2fdae6bfd8d3cf16913d948018c2d04",
+ "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d948018c2d04",
+ "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d94801a636037f2704"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Purples.js b/node_modules/d3-scale-chromatic/src/sequential-single/Purples.js
new file mode 100644
index 00000000..f4b22a5a
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Purples.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "efedf5bcbddc756bb1",
+ "f2f0f7cbc9e29e9ac86a51a3",
+ "f2f0f7cbc9e29e9ac8756bb154278f",
+ "f2f0f7dadaebbcbddc9e9ac8756bb154278f",
+ "f2f0f7dadaebbcbddc9e9ac8807dba6a51a34a1486",
+ "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a34a1486",
+ "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a354278f3f007d"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale-chromatic/src/sequential-single/Reds.js b/node_modules/d3-scale-chromatic/src/sequential-single/Reds.js
new file mode 100644
index 00000000..35a048fa
--- /dev/null
+++ b/node_modules/d3-scale-chromatic/src/sequential-single/Reds.js
@@ -0,0 +1,14 @@
+import colors from "../colors.js";
+import ramp from "../ramp.js";
+
+export var scheme = new Array(3).concat(
+ "fee0d2fc9272de2d26",
+ "fee5d9fcae91fb6a4acb181d",
+ "fee5d9fcae91fb6a4ade2d26a50f15",
+ "fee5d9fcbba1fc9272fb6a4ade2d26a50f15",
+ "fee5d9fcbba1fc9272fb6a4aef3b2ccb181d99000d",
+ "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181d99000d",
+ "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181da50f1567000d"
+).map(colors);
+
+export default ramp(scheme);
diff --git a/node_modules/d3-scale/LICENSE b/node_modules/d3-scale/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-scale/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-scale/README.md b/node_modules/d3-scale/README.md
new file mode 100644
index 00000000..9024eaf9
--- /dev/null
+++ b/node_modules/d3-scale/README.md
@@ -0,0 +1,1003 @@
+# d3-scale
+
+Scales are a convenient abstraction for a fundamental task in visualization: mapping a dimension of abstract data to a visual representation. Although most often used for position-encoding quantitative data, such as mapping a measurement in meters to a position in pixels for dots in a scatterplot, scales can represent virtually any visual encoding, such as diverging colors, stroke widths, or symbol size. Scales can also be used with virtually any type of data, such as named categorical data or discrete data that requires sensible breaks.
+
+For [continuous](#continuous-scales) quantitative data, you typically want a [linear scale](#linear-scales). (For time series data, a [time scale](#time-scales).) If the distribution calls for it, consider transforming data using a [power](#power-scales) or [log](#log-scales) scale. A [quantize scale](#quantize-scales) may aid differentiation by rounding continuous data to a fixed set of discrete values; similarly, a [quantile scale](#quantile-scales) computes quantiles from a sample population, and a [threshold scale](#threshold-scales) allows you to specify arbitrary breaks in continuous data.
+
+For discrete ordinal (ordered) or categorical (unordered) data, an [ordinal scale](#ordinal-scales) specifies an explicit mapping from a set of data values to a corresponding set of visual attributes (such as colors). The related [band](#band-scales) and [point](#point-scales) scales are useful for position-encoding ordinal data, such as bars in a bar chart or dots in an categorical scatterplot.
+
+This repository does not provide color schemes; see [d3-scale-chromatic](https://github.com/d3/d3-scale-chromatic) for color schemes designed to work with d3-scale.
+
+Scales have no intrinsic visual representation. However, most scales can [generate](#continuous_ticks) and [format](#continuous_tickFormat) ticks for reference marks to aid in the construction of axes.
+
+For a longer introduction, see these recommended tutorials:
+
+* [Introducing d3-scale](https://medium.com/@mbostock/introducing-d3-scale-61980c51545f) by Mike Bostock
+
+* Chapter 7. Scales of [*Interactive Data Visualization for the Web*](http://alignedleft.com/work/d3-book) by Scott Murray
+
+* [d3: scales, and color.](https://jckr.github.io/blog/2011/08/11/d3-scales-and-color/) by Jérôme Cukier
+
+## Installing
+
+If you use npm, `npm install d3-scale`. You can also download the [latest release on GitHub](https://github.com/d3/d3-scale/releases/latest). For vanilla HTML in modern browsers, import d3-scale from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-scale’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+
+
+
+
+
+```
+
+(You can omit d3-time and d3-time-format if you’re not using [d3.scaleTime](#scaleTime) or [d3.scaleUtc](#scaleUtc).)
+
+## API Reference
+
+* [Continuous](#continuous-scales) ([Linear](#linear-scales), [Power](#power-scales), [Log](#log-scales), [Identity](#identity-scales), [Time](#time-scales), [Radial](#radial-scales))
+* [Sequential](#sequential-scales)
+* [Diverging](#diverging-scales)
+* [Quantize](#quantize-scales)
+* [Quantile](#quantile-scales)
+* [Threshold](#threshold-scales)
+* [Ordinal](#ordinal-scales) ([Band](#band-scales), [Point](#point-scales))
+
+### Continuous Scales
+
+Continuous scales map a continuous, quantitative input [domain](#continuous_domain) to a continuous output [range](#continuous_range). If the range is also numeric, the mapping may be [inverted](#continuous_invert). A continuous scale is not constructed directly; instead, try a [linear](#linear-scales), [power](#power-scales), [log](#log-scales), [identity](#identity-scales), [radial](#radial-scales), [time](#time-scales) or [sequential color](#sequential-scales) scale.
+
+# continuous (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Given a *value* from the [domain](#continuous_domain), returns the corresponding value from the [range](#continuous_range). If the given *value* is outside the domain, and [clamping](#continuous_clamp) is not enabled, the mapping may be extrapolated such that the returned value is outside the range. For example, to apply a position encoding:
+
+```js
+var x = d3.scaleLinear()
+ .domain([10, 130])
+ .range([0, 960]);
+
+x(20); // 80
+x(50); // 320
+```
+
+Or to apply a color encoding:
+
+```js
+var color = d3.scaleLinear()
+ .domain([10, 100])
+ .range(["brown", "steelblue"]);
+
+color(20); // "#9a3439"
+color(50); // "#7b5167"
+```
+
+Or, in shorthand:
+
+```js
+var x = d3.scaleLinear([10, 130], [0, 960]);
+var color = d3.scaleLinear([10, 100], ["brown", "steelblue"]);
+```
+
+# continuous .invert (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Given a *value* from the [range](#continuous_range), returns the corresponding value from the [domain](#continuous_domain). Inversion is useful for interaction, say to determine the data value corresponding to the position of the mouse. For example, to invert a position encoding:
+
+```js
+var x = d3.scaleLinear()
+ .domain([10, 130])
+ .range([0, 960]);
+
+x.invert(80); // 20
+x.invert(320); // 50
+```
+
+If the given *value* is outside the range, and [clamping](#continuous_clamp) is not enabled, the mapping may be extrapolated such that the returned value is outside the domain. This method is only supported if the range is numeric. If the range is not numeric, returns NaN.
+
+For a valid value *y* in the range, continuous (continuous .invert(y )) approximately equals *y*; similarly, for a valid value *x* in the domain, continuous .invert(continuous (x )) approximately equals *x*. The scale and its inverse may not be exact due to the limitations of floating point precision.
+
+# continuous .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *domain* is specified, sets the scale’s domain to the specified array of numbers. The array must contain two or more elements. If the elements in the given array are not numbers, they will be coerced to numbers. If *domain* is not specified, returns a copy of the scale’s current domain.
+
+Although continuous scales typically have two values each in their domain and range, specifying more than two values produces a piecewise scale. For example, to create a [diverging color scale](#diverging-scales) that interpolates between white and red for negative values, and white and green for positive values, say:
+
+```js
+var color = d3.scaleLinear()
+ .domain([-1, 0, 1])
+ .range(["red", "white", "green"]);
+
+color(-0.5); // "rgb(255, 128, 128)"
+color(+0.5); // "rgb(128, 192, 128)"
+```
+
+Internally, a piecewise scale performs a [binary search](https://github.com/d3/d3-array/blob/master/README.md#bisect) for the range interpolator corresponding to the given domain value. Thus, the domain must be in ascending or descending order. If the domain and range have different lengths *N* and *M*, only the first *min(N,M)* elements in each are observed.
+
+# continuous .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *range* is specified, sets the scale’s range to the specified array of values. The array must contain two or more elements. Unlike the [domain](#continuous_domain), elements in the given array need not be numbers; any value that is supported by the underlying [interpolator](#continuous_interpolate) will work, though note that numeric ranges are required for [invert](#continuous_invert). If *range* is not specified, returns a copy of the scale’s current range. See [*continuous*.interpolate](#continuous_interpolate) for more examples.
+
+# continuous .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Sets the scale’s [*range*](#continuous_range) to the specified array of values while also setting the scale’s [interpolator](#continuous_interpolate) to [interpolateRound](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolateRound). This is a convenience method equivalent to:
+
+```js
+continuous
+ .range(range)
+ .interpolate(d3.interpolateRound);
+```
+
+The rounding interpolator is sometimes useful for avoiding antialiasing artifacts, though also consider the [shape-rendering](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering) “crispEdges” styles. Note that this interpolator can only be used with numeric ranges.
+
+# continuous .clamp (clamp ) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *clamp* is specified, enables or disables clamping accordingly. If clamping is disabled and the scale is passed a value outside the [domain](#continuous_domain), the scale may return a value outside the [range](#continuous_range) through extrapolation. If clamping is enabled, the return value of the scale is always within the scale’s range. Clamping similarly applies to [*continuous*.invert](#continuous_invert). For example:
+
+```js
+var x = d3.scaleLinear()
+ .domain([10, 130])
+ .range([0, 960]);
+
+x(-10); // -160, outside range
+x.invert(-160); // -10, outside domain
+
+x.clamp(true);
+x(-10); // 0, clamped to range
+x.invert(-160); // 10, clamped to domain
+```
+
+If *clamp* is not specified, returns whether or not the scale currently clamps values to within the range.
+
+# continuous .unknown ([value ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *value* is specified, sets the output value of the scale for undefined (or NaN) input values and returns this scale. If *value* is not specified, returns the current unknown value, which defaults to undefined.
+
+# continuous .interpolate (interpolate ) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *interpolate* is specified, sets the scale’s [range](#continuous_range) interpolator factory. This interpolator factory is used to create interpolators for each adjacent pair of values from the range; these interpolators then map a normalized domain parameter *t* in [0, 1] to the corresponding value in the range. If *factory* is not specified, returns the scale’s current interpolator factory, which defaults to [d3.interpolate](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate). See [d3-interpolate](https://github.com/d3/d3-interpolate) for more interpolators.
+
+For example, consider a diverging color scale with three colors in the range:
+
+```js
+var color = d3.scaleLinear()
+ .domain([-100, 0, +100])
+ .range(["red", "white", "green"]);
+```
+
+Two interpolators are created internally by the scale, equivalent to:
+
+```js
+var i0 = d3.interpolate("red", "white"),
+ i1 = d3.interpolate("white", "green");
+```
+
+A common reason to specify a custom interpolator is to change the color space of interpolation. For example, to use [HCL](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolateHcl):
+
+```js
+var color = d3.scaleLinear()
+ .domain([10, 100])
+ .range(["brown", "steelblue"])
+ .interpolate(d3.interpolateHcl);
+```
+
+Or for [Cubehelix](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolateCubehelix) with a custom gamma:
+
+```js
+var color = d3.scaleLinear()
+ .domain([10, 100])
+ .range(["brown", "steelblue"])
+ .interpolate(d3.interpolateCubehelix.gamma(3));
+```
+
+Note: the [default interpolator](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) **may reuse return values**. For example, if the range values are objects, then the value interpolator always returns the same object, modifying it in-place. If the scale is used to set an attribute or style, this is typically acceptable (and desirable for performance); however, if you need to store the scale’s return value, you must specify your own interpolator or make a copy as appropriate.
+
+# continuous .ticks ([count ])
+
+Returns approximately *count* representative values from the scale’s [domain](#continuous_domain). If *count* is not specified, it defaults to 10. The returned tick values are uniformly spaced, have human-readable values (such as multiples of powers of 10), and are guaranteed to be within the extent of the domain. Ticks are often used to display reference lines, or tick marks, in conjunction with the visualized data. The specified *count* is only a hint; the scale may return more or fewer values depending on the domain. See also d3-array’s [ticks](https://github.com/d3/d3-array/blob/master/README.md#ticks).
+
+# continuous .tickFormat ([count [, specifier ]]) · [Source](https://github.com/d3/d3-scale/blob/master/src/tickFormat.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Returns a [number format](https://github.com/d3/d3-format) function suitable for displaying a tick value, automatically computing the appropriate precision based on the fixed interval between tick values. The specified *count* should have the same value as the count that is used to generate the [tick values](#continuous_ticks).
+
+An optional *specifier* allows a [custom format](https://github.com/d3/d3-format/blob/master/README.md#locale_format) where the precision of the format is automatically set by the scale as appropriate for the tick interval. For example, to format percentage change, you might say:
+
+```js
+var x = d3.scaleLinear()
+ .domain([-1, 1])
+ .range([0, 960]);
+
+var ticks = x.ticks(5),
+ tickFormat = x.tickFormat(5, "+%");
+
+ticks.map(tickFormat); // ["-100%", "-50%", "+0%", "+50%", "+100%"]
+```
+
+If *specifier* uses the format type `s`, the scale will return a [SI-prefix format](https://github.com/d3/d3-format/blob/master/README.md#locale_formatPrefix) based on the largest value in the domain. If the *specifier* already specifies a precision, this method is equivalent to [*locale*.format](https://github.com/d3/d3-format/blob/master/README.md#locale_format).
+
+See also [d3.tickFormat](#tickFormat).
+
+# continuous .nice ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/nice.js), [Examples](https://observablehq.com/@d3/d3-scalelinear)
+
+Extends the [domain](#continuous_domain) so that it starts and ends on nice round values. This method typically modifies the scale’s domain, and may only extend the bounds to the nearest round value. An optional tick *count* argument allows greater control over the step size used to extend the bounds, guaranteeing that the returned [ticks](#continuous_ticks) will exactly cover the domain. Nicing is useful if the domain is computed from data, say using [extent](https://github.com/d3/d3-array/blob/master/README.md#extent), and may be irregular. For example, for a domain of [0.201479…, 0.996679…], a nice domain might be [0.2, 1.0]. If the domain has more than two values, nicing the domain only affects the first and last value. See also d3-array’s [tickStep](https://github.com/d3/d3-array/blob/master/README.md#tickStep).
+
+Nicing a scale only modifies the current domain; it does not automatically nice domains that are subsequently set using [*continuous*.domain](#continuous_domain). You must re-nice the scale after setting the new domain, if desired.
+
+# continuous .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+# d3.tickFormat (start , stop , count [, specifier ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/tickFormat.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Returns a [number format](https://github.com/d3/d3-format) function suitable for displaying a tick value, automatically computing the appropriate precision based on the fixed interval between tick values, as determined by [d3.tickStep](https://github.com/d3/d3-array/blob/master/README.md#tickStep).
+
+An optional *specifier* allows a [custom format](https://github.com/d3/d3-format/blob/master/README.md#locale_format) where the precision of the format is automatically set by the scale as appropriate for the tick interval. For example, to format percentage change, you might say:
+
+```js
+var tickFormat = d3.tickFormat(-1, 1, 5, "+%");
+
+tickFormat(-0.5); // "-50%"
+```
+
+If *specifier* uses the format type `s`, the scale will return a [SI-prefix format](https://github.com/d3/d3-format/blob/master/README.md#locale_formatPrefix) based on the larger absolute value of *start* and *stop*. If the *specifier* already specifies a precision, this method is equivalent to [*locale*.format](https://github.com/d3/d3-format/blob/master/README.md#locale_format).
+
+#### Linear Scales
+
+# d3.scaleLinear ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/linear.js), [Examples](https://observablehq.com/@d3/d3-scalelinear)
+
+Constructs a new [continuous scale](#continuous-scales) with the specified [domain](#continuous_domain) and [range](#continuous_range), the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#continuous_interpolate) and [clamping](#continuous_clamp) disabled. If either *domain* or *range* are not specified, each defaults to [0, 1]. Linear scales are a good default choice for continuous quantitative data because they preserve proportional differences. Each range value *y* can be expressed as a function of the domain value *x*: *y* = *mx* + *b*.
+
+#### Power Scales
+
+Power scales are similar to [linear scales](#linear-scales), except an exponential transform is applied to the input domain value before the output range value is computed. Each range value *y* can be expressed as a function of the domain value *x*: *y* = *mx^k* + *b*, where *k* is the [exponent](#pow_exponent) value. Power scales also support negative domain values, in which case the input value and the resulting output value are multiplied by -1.
+
+# d3.scalePow ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Constructs a new [continuous scale](#continuous-scales) with the specified [domain](#continuous_domain) and [range](#continuous_range), the [exponent](#pow_exponent) 1, the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#continuous_interpolate) and [clamping](#continuous_clamp) disabled. If either *domain* or *range* are not specified, each defaults to [0, 1]. (Note that this is effectively a [linear](#linear-scales) scale until you set a different exponent.)
+
+# pow (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*](#_continuous).
+
+# pow .invert (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.invert](#continuous_invert).
+
+# pow .exponent ([exponent ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *exponent* is specified, sets the current exponent to the given numeric value. If *exponent* is not specified, returns the current exponent, which defaults to 1. (Note that this is effectively a [linear](#linear-scales) scale until you set a different exponent.)
+
+# pow .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.domain](#continuous_domain).
+
+# pow .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.range](#continuous_range).
+
+# pow .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.rangeRound](#continuous_rangeRound).
+
+# pow .clamp (clamp ) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.clamp](#continuous_clamp).
+
+# pow .interpolate (interpolate ) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.interpolate](#continuous_interpolate).
+
+# pow .ticks ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+See [*continuous*.ticks](#continuous_ticks).
+
+# pow .tickFormat ([count [, specifier ]]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+See [*continuous*.tickFormat](#continuous_tickFormat).
+
+# pow .nice ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.nice](#continuous_nice).
+
+# pow .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.copy](#continuous_copy).
+
+# d3.scaleSqrt ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/pow.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Constructs a new [continuous](#continuous-scales) [power scale](#power-scales) with the specified [domain](#continuous_domain) and [range](#continuous_range), the [exponent](#pow_exponent) 0.5, the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#continuous_interpolate) and [clamping](#continuous_clamp) disabled. If either *domain* or *range* are not specified, each defaults to [0, 1]. This is a convenience method equivalent to `d3.scalePow(…).exponent(0.5)`.
+
+#### Log Scales
+
+Log scales are similar to [linear scales](#linear-scales), except a logarithmic transform is applied to the input domain value before the output range value is computed. The mapping to the range value *y* can be expressed as a function of the domain value *x*: *y* = *m* log(x ) + *b*.
+
+As log(0) = -∞, a log scale domain must be **strictly-positive or strictly-negative**; the domain must not include or cross zero. A log scale with a positive domain has a well-defined behavior for positive values, and a log scale with a negative domain has a well-defined behavior for negative values. (For a negative domain, input and output values are implicitly multiplied by -1.) The behavior of the scale is undefined if you pass a negative value to a log scale with a positive domain or vice versa.
+
+# d3.scaleLog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Constructs a new [continuous scale](#continuous-scales) with the specified [domain](#log_domain) and [range](#log_range), the [base](#log_base) 10, the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#log_interpolate) and [clamping](#log_clamp) disabled. If *domain* is not specified, it defaults to [1, 10]. If *range* is not specified, it defaults to [0, 1].
+
+# log (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*](#_continuous).
+
+# log .invert (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.invert](#continuous_invert).
+
+# log .base ([base ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *base* is specified, sets the base for this logarithmic scale to the specified value. If *base* is not specified, returns the current base, which defaults to 10.
+
+# log .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.domain](#continuous_domain).
+
+# log .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/continuous.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.range](#continuous_range).
+
+# log .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.rangeRound](#continuous_rangeRound).
+
+# log .clamp (clamp ) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.clamp](#continuous_clamp).
+
+# log .interpolate (interpolate ) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.interpolate](#continuous_interpolate).
+
+# log .ticks ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Like [*continuous*.ticks](#continuous_ticks), but customized for a log scale. If the [base](#log_base) is an integer, the returned ticks are uniformly spaced within each integer power of base; otherwise, one tick per power of base is returned. The returned ticks are guaranteed to be within the extent of the domain. If the orders of magnitude in the [domain](#log_domain) is greater than *count*, then at most one tick per power is returned. Otherwise, the tick values are unfiltered, but note that you can use [*log*.tickFormat](#log_tickFormat) to filter the display of tick labels. If *count* is not specified, it defaults to 10.
+
+# log .tickFormat ([count [, specifier ]]) · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Like [*continuous*.tickFormat](#continuous_tickFormat), but customized for a log scale. The specified *count* typically has the same value as the count that is used to generate the [tick values](#continuous_ticks). If there are too many ticks, the formatter may return the empty string for some of the tick labels; however, note that the ticks are still shown. To disable filtering, specify a *count* of Infinity. When specifying a count, you may also provide a format *specifier* or format function. For example, to get a tick formatter that will display 20 ticks of a currency, say `log.tickFormat(20, "$,f")`. If the specifier does not have a defined precision, the precision will be set automatically by the scale, returning the appropriate format. This provides a convenient way of specifying a format whose precision will be automatically set by the scale.
+
+# log .nice () · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/d3-scalelinear)
+
+Like [*continuous*.nice](#continuous_nice), except extends the domain to integer powers of [base](#log_base). For example, for a domain of [0.201479…, 0.996679…], and base 10, the nice domain is [0.1, 1]. If the domain has more than two values, nicing the domain only affects the first and last value.
+
+# log .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/log.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+See [*continuous*.copy](#continuous_copy).
+
+#### Symlog Scales
+
+See [A bi-symmetric log transformation for wide-range data](https://www.researchgate.net/profile/John_Webber4/publication/233967063_A_bi-symmetric_log_transformation_for_wide-range_data/links/0fcfd50d791c85082e000000.pdf) by Webber for more.
+
+# d3.scaleSymlog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/symlog.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+Constructs a new [continuous scale](#continuous-scales) with the specified [domain](#continuous_domain) and [range](#continuous_range), the [constant](#symlog_constant) 1, the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#continuous_interpolate) and [clamping](#continuous_clamp) disabled. If *domain* is not specified, it defaults to [0, 1]. If *range* is not specified, it defaults to [0, 1].
+
+# symlog .constant ([constant ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/symlog.js), [Examples](https://observablehq.com/@d3/continuous-scales)
+
+If *constant* is specified, sets the symlog constant to the specified number and returns this scale; otherwise returns the current value of the symlog constant, which defaults to 1. See “A bi-symmetric log transformation for wide-range data” by Webber for more.
+
+#### Identity Scales
+
+Identity scales are a special case of [linear scales](#linear-scales) where the domain and range are identical; the scale and its invert method are thus the identity function. These scales are occasionally useful when working with pixel coordinates, say in conjunction with an axis. Identity scales do not support [rangeRound](#continuous_rangeRound), [clamp](#continuous_clamp) or [interpolate](#continuous_interpolate).
+
+# d3.scaleIdentity ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/identity.js), [Examples](https://observablehq.com/@d3/d3-scalelinear)
+
+Constructs a new identity scale with the specified [domain](#continuous_domain) and [range](#continuous_range). If *range* is not specified, it defaults to [0, 1].
+
+#### Radial Scales
+
+Radial scales are a variant of [linear scales](#linear-scales) where the range is internally squared so that an input value corresponds linearly to the squared output value. These scales are useful when you want the input value to correspond to the area of a graphical mark and the mark is specified by radius, as in a radial bar chart. Radial scales do not support [interpolate](#continuous_interpolate).
+
+# d3.scaleRadial ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/radial.js), [Examples](https://observablehq.com/@d3/radial-stacked-bar-chart)
+
+Constructs a new radial scale with the specified [domain](#continuous_domain) and [range](#continuous_range). If *domain* or *range* is not specified, each defaults to [0, 1].
+
+#### Time Scales
+
+Time scales are a variant of [linear scales](#linear-scales) that have a temporal domain: domain values are coerced to [dates](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date) rather than numbers, and [invert](#continuous_invert) likewise returns a date. Time scales implement [ticks](#time_ticks) based on [calendar intervals](https://github.com/d3/d3-time), taking the pain out of generating axes for temporal domains.
+
+For example, to create a position encoding:
+
+```js
+var x = d3.scaleTime()
+ .domain([new Date(2000, 0, 1), new Date(2000, 0, 2)])
+ .range([0, 960]);
+
+x(new Date(2000, 0, 1, 5)); // 200
+x(new Date(2000, 0, 1, 16)); // 640
+x.invert(200); // Sat Jan 01 2000 05:00:00 GMT-0800 (PST)
+x.invert(640); // Sat Jan 01 2000 16:00:00 GMT-0800 (PST)
+```
+
+For a valid value *y* in the range, time (time .invert(y )) equals *y*; similarly, for a valid value *x* in the domain, time .invert(time (x )) equals *x*. The invert method is useful for interaction, say to determine the value in the domain that corresponds to the pixel location under the mouse.
+
+# d3.scaleTime ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+Constructs a new time scale with the specified [domain](#time_domain) and [range](#time_range), the [default](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) [interpolator](#time_interpolate) and [clamping](#time_clamp) disabled. If *domain* is not specified, it defaults to [2000-01-01, 2000-01-02]. If *range* is not specified, it defaults to [0, 1].
+
+# time (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*](#_continuous).
+
+# time .invert (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.invert](#continuous_invert).
+
+# time .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.domain](#continuous_domain).
+
+# time .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.range](#continuous_range).
+
+# time .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.rangeRound](#continuous_rangeRound).
+
+# time .clamp (clamp ) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.clamp](#continuous_clamp).
+
+# time .interpolate (interpolate ) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.interpolate](#continuous_interpolate).
+
+# time .ticks ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+# time .ticks ([interval ])
+
+Returns representative dates from the scale’s [domain](#time_domain). The returned tick values are uniformly-spaced (mostly), have sensible values (such as every day at midnight), and are guaranteed to be within the extent of the domain. Ticks are often used to display reference lines, or tick marks, in conjunction with the visualized data.
+
+An optional *count* may be specified to affect how many ticks are generated. If *count* is not specified, it defaults to 10. The specified *count* is only a hint; the scale may return more or fewer values depending on the domain. For example, to create ten default ticks, say:
+
+```js
+var x = d3.scaleTime();
+
+x.ticks(10);
+// [Sat Jan 01 2000 00:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 03:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 06:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 09:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 12:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 15:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 18:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 21:00:00 GMT-0800 (PST),
+// Sun Jan 02 2000 00:00:00 GMT-0800 (PST)]
+```
+
+The following time intervals are considered for automatic ticks:
+
+* 1-, 5-, 15- and 30-second.
+* 1-, 5-, 15- and 30-minute.
+* 1-, 3-, 6- and 12-hour.
+* 1- and 2-day.
+* 1-week.
+* 1- and 3-month.
+* 1-year.
+
+In lieu of a *count*, a [time *interval*](https://github.com/d3/d3-time/blob/master/README.md#intervals) may be explicitly specified. To prune the generated ticks for a given time *interval*, use [*interval*.every](https://github.com/d3/d3-time/blob/master/README.md#interval_every). For example, to generate ticks at 15-[minute](https://github.com/d3/d3-time/blob/master/README.md#minute) intervals:
+
+```js
+var x = d3.scaleTime()
+ .domain([new Date(2000, 0, 1, 0), new Date(2000, 0, 1, 2)]);
+
+x.ticks(d3.timeMinute.every(15));
+// [Sat Jan 01 2000 00:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 00:15:00 GMT-0800 (PST),
+// Sat Jan 01 2000 00:30:00 GMT-0800 (PST),
+// Sat Jan 01 2000 00:45:00 GMT-0800 (PST),
+// Sat Jan 01 2000 01:00:00 GMT-0800 (PST),
+// Sat Jan 01 2000 01:15:00 GMT-0800 (PST),
+// Sat Jan 01 2000 01:30:00 GMT-0800 (PST),
+// Sat Jan 01 2000 01:45:00 GMT-0800 (PST),
+// Sat Jan 01 2000 02:00:00 GMT-0800 (PST)]
+```
+
+Alternatively, pass a test function to [*interval*.filter](https://github.com/d3/d3-time/blob/master/README.md#interval_filter):
+
+```js
+x.ticks(d3.timeMinute.filter(function(d) {
+ return d.getMinutes() % 15 === 0;
+}));
+```
+
+Note: in some cases, such as with day ticks, specifying a *step* can result in irregular spacing of ticks because time intervals have varying length.
+
+# time .tickFormat ([count [, specifier ]]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+# time .tickFormat ([interval [, specifier ]])
+
+Returns a time format function suitable for displaying [tick](#time_ticks) values. The specified *count* or *interval* is currently ignored, but is accepted for consistency with other scales such as [*continuous*.tickFormat](#continuous_tickFormat). If a format *specifier* is specified, this method is equivalent to [format](https://github.com/d3/d3-time-format/blob/master/README.md#format). If *specifier* is not specified, the default time format is returned. The default multi-scale time format chooses a human-readable representation based on the specified date as follows:
+
+* `%Y` - for year boundaries, such as `2011`.
+* `%B` - for month boundaries, such as `February`.
+* `%b %d` - for week boundaries, such as `Feb 06`.
+* `%a %d` - for day boundaries, such as `Mon 07`.
+* `%I %p` - for hour boundaries, such as `01 AM`.
+* `%I:%M` - for minute boundaries, such as `01:23`.
+* `:%S` - for second boundaries, such as `:45`.
+* `.%L` - milliseconds for all other times, such as `.012`.
+
+Although somewhat unusual, this default behavior has the benefit of providing both local and global context: for example, formatting a sequence of ticks as [11 PM, Mon 07, 01 AM] reveals information about hours, dates, and day simultaneously, rather than just the hours [11 PM, 12 AM, 01 AM]. See [d3-time-format](https://github.com/d3/d3-time-format) if you’d like to roll your own conditional time format.
+
+# time .nice ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+# time .nice ([interval ])
+
+Extends the [domain](#time_domain) so that it starts and ends on nice round values. This method typically modifies the scale’s domain, and may only extend the bounds to the nearest round value. See [*continuous*.nice](#continuous_nice) for more.
+
+An optional tick *count* argument allows greater control over the step size used to extend the bounds, guaranteeing that the returned [ticks](#time_ticks) will exactly cover the domain. Alternatively, a [time *interval*](https://github.com/d3/d3-time/blob/master/README.md#intervals) may be specified to explicitly set the ticks. If an *interval* is specified, an optional *step* may also be specified to skip some ticks. For example, `time.nice(d3.timeSecond.every(10))` will extend the domain to an even ten seconds (0, 10, 20, etc. ). See [*time*.ticks](#time_ticks) and [*interval*.every](https://github.com/d3/d3-time/blob/master/README.md#interval_every) for further detail.
+
+Nicing is useful if the domain is computed from data, say using [extent](https://github.com/d3/d3-array/blob/master/README.md#extent), and may be irregular. For example, for a domain of [2009-07-13T00:02, 2009-07-13T23:48], the nice domain is [2009-07-13, 2009-07-14]. If the domain has more than two values, nicing the domain only affects the first and last value.
+
+# time .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/time.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+See [*continuous*.copy](#continuous_copy).
+
+# d3.scaleUtc ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/utcTime.js), [Examples](https://observablehq.com/@d3/d3-scaletime)
+
+Equivalent to [scaleTime](#scaleTime), but the returned time scale operates in [Coordinated Universal Time](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) rather than local time.
+
+### Sequential Scales
+
+Sequential scales, like [diverging scales](#diverging-scales), are similar to [continuous scales](#continuous-scales) in that they map a continuous, numeric input domain to a continuous output range. However, unlike continuous scales, the input domain and output range of a sequential scale always has exactly two elements, and the output range is typically specified as an interpolator rather than an array of values. These scales do not expose [invert](#continuous_invert) and [interpolate](#continuous_interpolate) methods.
+
+# d3.scaleSequential ([[domain , ]interpolator ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+Constructs a new sequential scale with the specified [*domain*](#sequential_domain) and [*interpolator*](#sequential_interpolator) function or array. If *domain* is not specified, it defaults to [0, 1]. If *interpolator* is not specified, it defaults to the identity function. When the scale is [applied](#_sequential), the interpolator will be invoked with a value typically in the range [0, 1], where 0 represents the minimum value and 1 represents the maximum value. For example, to implement the ill-advised [HSL](https://github.com/d3/d3-color/blob/master/README.md#hsl) rainbow scale:
+
+```js
+var rainbow = d3.scaleSequential(function(t) {
+ return d3.hsl(t * 360, 1, 0.5) + "";
+});
+```
+
+A more aesthetically-pleasing and perceptually-effective cyclical hue encoding is to use [d3.interpolateRainbow](https://github.com/d3/d3-scale-chromatic/blob/master/README.md#interpolateRainbow):
+
+```js
+var rainbow = d3.scaleSequential(d3.interpolateRainbow);
+```
+
+If *interpolator* is an array, it represents the scale’s two-element output range and is converted to an interpolator function using [d3.interpolate](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate).
+
+# sequential (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*](#_continuous).
+
+# sequential .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*.domain](#continuous_domain). Note that a sequential scale’s domain must be numeric and must contain exactly two values.
+
+# sequential .clamp ([clamp ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*.clamp](#continuous_clamp).
+
+# sequential .interpolator ([interpolator ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+If *interpolator* is specified, sets the scale’s interpolator to the specified function. If *interpolator* is not specified, returns the scale’s current interpolator.
+
+# sequential .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*.range](#continuous_range). If *range* is specified, the given two-element array is converted to an interpolator function using [d3.interpolate](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate).
+
+# sequential .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*.rangeRound](#continuous_rangeRound). If *range* is specified, implicitly uses [d3.interpolateRound](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolateRound) as the interpolator.
+
+# sequential .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+See [*continuous*.copy](#continuous_copy).
+
+# d3.scaleSequentialLog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+A [sequential scale](#sequential-scales) with a logarithmic transform, analogous to a [log scale](#log-scales).
+
+# d3.scaleSequentialPow ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+A [sequential scale](#sequential-scales) with an exponential transform, analogous to a [power scale](#pow-scales).
+
+# d3.scaleSequentialSqrt ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+A [sequential scale](#sequential-scales) with a square-root transform, analogous to a [d3.scaleSqrt](#scaleSqrt).
+
+# d3.scaleSequentialSymlog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequential.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+A [sequential scale](#sequential-scales) with a symmetric logarithmic transform, analogous to a [symlog scale](#symlog-scales).
+
+# d3.scaleSequentialQuantile ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequentialQuantile.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+A [sequential scale](#sequential-scales) using a *p*-quantile transform, analogous to a [quantile scale](#quantile-scales).
+
+# sequentialQuantile .quantiles (n ) · [Source](https://github.com/d3/d3-scale/blob/master/src/sequentialQuantile.js), [Examples](https://observablehq.com/@d3/sequential-scales)
+
+Returns an array of *n* + 1 quantiles. For example, if *n* = 4, returns an array of five numbers: the minimum value, the first quartile, the median, the third quartile, and the maximum.
+
+### Diverging Scales
+
+Diverging scales, like [sequential scales](#sequential-scales), are similar to [continuous scales](#continuous-scales) in that they map a continuous, numeric input domain to a continuous output range. However, unlike continuous scales, the input domain and output range of a diverging scale always has exactly three elements, and the output range is typically specified as an interpolator rather than an array of values. These scales do not expose [invert](#continuous_invert) and [interpolate](#continuous_interpolate) methods.
+
+# d3.scaleDiverging ([[domain , ]interpolator ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+Constructs a new diverging scale with the specified [*domain*](#diverging_domain) and [*interpolator*](#diverging_interpolator) function or array. If *domain* is not specified, it defaults to [0, 0.5, 1]. If *interpolator* is not specified, it defaults to the identity function. When the scale is [applied](#_diverging), the interpolator will be invoked with a value typically in the range [0, 1], where 0 represents the extreme negative value, 0.5 represents the neutral value, and 1 represents the extreme positive value. For example, using [d3.interpolateSpectral](https://github.com/d3/d3-scale-chromatic/blob/master/README.md#interpolateSpectral):
+
+```js
+var spectral = d3.scaleDiverging(d3.interpolateSpectral);
+```
+
+If *interpolator* is an array, it represents the scale’s three-element output range and is converted to an interpolator function using [d3.interpolate](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) and [d3.piecewise](https://github.com/d3/d3-interpolate/blob/master/README.md#piecewise).
+
+# diverging (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*](#_continuous).
+
+# diverging .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.domain](#continuous_domain). Note that a diverging scale’s domain must be numeric and must contain exactly three values. The default domain is [0, 0.5, 1].
+
+# diverging .clamp ([clamp ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.clamp](#continuous_clamp).
+
+# diverging .interpolator ([interpolator ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+If *interpolator* is specified, sets the scale’s interpolator to the specified function. If *interpolator* is not specified, returns the scale’s current interpolator.
+
+# diverging .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.range](#continuous_range). If *range* is specified, the given three-element array is converted to an interpolator function using [d3.interpolate](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolate) and [d3.piecewise](https://github.com/d3/d3-interpolate/blob/master/README.md#piecewise).
+
+# diverging .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.range](#continuous_rangeRound). If *range* is specified, implicitly uses [d3.interpolateRound](https://github.com/d3/d3-interpolate/blob/master/README.md#interpolateRound) as the interpolator.
+
+# diverging .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.copy](#continuous_copy).
+
+# diverging .unknown () · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+See [*continuous*.unknown](#continuous_unknown).
+
+# d3.scaleDivergingLog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+A [diverging scale](#diverging-scales) with a logarithmic transform, analogous to a [log scale](#log-scales).
+
+# d3.scaleDivergingPow ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+A [diverging scale](#diverging-scales) with an exponential transform, analogous to a [power scale](#pow-scales).
+
+# d3.scaleDivergingSqrt ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+A [diverging scale](#diverging-scales) with a square-root transform, analogous to a [d3.scaleSqrt](#scaleSqrt).
+
+# d3.scaleDivergingSymlog ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/diverging.js), [Examples](https://observablehq.com/@d3/diverging-scales)
+
+A [diverging scale](#diverging-scales) with a symmetric logarithmic transform, analogous to a [symlog scale](#symlog-scales).
+
+### Quantize Scales
+
+Quantize scales are similar to [linear scales](#linear-scales), except they use a discrete rather than continuous range. The continuous input domain is divided into uniform segments based on the number of values in (*i.e.*, the cardinality of) the output range. Each range value *y* can be expressed as a quantized linear function of the domain value *x*: *y* = *m round(x)* + *b*. See [this choropleth](https://observablehq.com/@d3/choropleth) for an example.
+
+# d3.scaleQuantize ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Constructs a new quantize scale with the specified [*domain*](#quantize_domain) and [*range*](#quantize_range). If either *domain* or *range* is not specified, each defaults to [0, 1]. Thus, the default quantize scale is equivalent to the [Math.round](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Math/round) function.
+
+# quantize (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Given a *value* in the input [domain](#quantize_domain), returns the corresponding value in the output [range](#quantize_range). For example, to apply a color encoding:
+
+```js
+var color = d3.scaleQuantize()
+ .domain([0, 1])
+ .range(["brown", "steelblue"]);
+
+color(0.49); // "brown"
+color(0.51); // "steelblue"
+```
+
+Or dividing the domain into three equally-sized parts with different range values to compute an appropriate stroke width:
+
+```js
+var width = d3.scaleQuantize()
+ .domain([10, 100])
+ .range([1, 2, 4]);
+
+width(20); // 1
+width(50); // 2
+width(80); // 4
+```
+
+# quantize .invertExtent (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns the extent of values in the [domain](#quantize_domain) [x0 , x1 ] for the corresponding *value* in the [range](#quantize_range): the inverse of [*quantize*](#_quantize). This method is useful for interaction, say to determine the value in the domain that corresponds to the pixel location under the mouse.
+
+```js
+var width = d3.scaleQuantize()
+ .domain([10, 100])
+ .range([1, 2, 4]);
+
+width.invertExtent(2); // [40, 70]
+```
+
+# quantize .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *domain* is specified, sets the scale’s domain to the specified two-element array of numbers. If the elements in the given array are not numbers, they will be coerced to numbers. The numbers must be in ascending order or the behavior of the scale is undefined. If *domain* is not specified, returns the scale’s current domain.
+
+# quantize .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *range* is specified, sets the scale’s range to the specified array of values. The array may contain any number of discrete values. The elements in the given array need not be numbers; any value or type will work. If *range* is not specified, returns the scale’s current range.
+
+# quantize .ticks ([count ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Equivalent to [*continuous*.ticks](#continuous_ticks).
+
+# quantize .tickFormat ([count [, specifier ]]) · [Source](https://github.com/d3/d3-scale/blob/master/src/linear.js), [Examples](https://observablehq.com/@d3/scale-ticks)
+
+Equivalent to [*continuous*.tickFormat](#continuous_tickFormat).
+
+# quantize .nice () · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Equivalent to [*continuous*.nice](#continuous_nice).
+
+# quantize .thresholds () · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns the array of computed thresholds within the [domain](#quantize_domain).
+
+# quantize .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/quantize.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+### Quantile Scales
+
+Quantile scales map a sampled input domain to a discrete range. The domain is considered continuous and thus the scale will accept any reasonable input value; however, the domain is specified as a discrete set of sample values. The number of values in (the cardinality of) the output range determines the number of quantiles that will be computed from the domain. To compute the quantiles, the domain is sorted, and treated as a [population of discrete values](https://en.wikipedia.org/wiki/Quantile#Quantiles_of_a_population); see d3-array’s [quantile](https://github.com/d3/d3-array/blob/master/README.md#quantile). See [this quantile choropleth](https://observablehq.com/@d3/quantile-choropleth) for an example.
+
+# d3.scaleQuantile ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Constructs a new quantile scale with the specified [*domain*](#quantile_domain) and [*range*](#quantile_range). If either *domain* or *range* is not specified, each defaults to the empty array. The quantile scale is invalid until both a domain and range are specified.
+
+# quantile (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Given a *value* in the input [domain](#quantile_domain), returns the corresponding value in the output [range](#quantile_range).
+
+# quantile .invertExtent (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns the extent of values in the [domain](#quantile_domain) [x0 , x1 ] for the corresponding *value* in the [range](#quantile_range): the inverse of [*quantile*](#_quantile). This method is useful for interaction, say to determine the value in the domain that corresponds to the pixel location under the mouse.
+
+# quantile .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *domain* is specified, sets the domain of the quantile scale to the specified set of discrete numeric values. The array must not be empty, and must contain at least one numeric value; NaN, null and undefined values are ignored and not considered part of the sample population. If the elements in the given array are not numbers, they will be coerced to numbers. A copy of the input array is sorted and stored internally. If *domain* is not specified, returns the scale’s current domain.
+
+# quantile .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *range* is specified, sets the discrete values in the range. The array must not be empty, and may contain any type of value. The number of values in (the cardinality, or length, of) the *range* array determines the number of quantiles that are computed. For example, to compute quartiles, *range* must be an array of four elements such as [0, 1, 2, 3]. If *range* is not specified, returns the current range.
+
+# quantile .quantiles () · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns the quantile thresholds. If the [range](#quantile_range) contains *n* discrete values, the returned array will contain *n* - 1 thresholds. Values less than the first threshold are considered in the first quantile; values greater than or equal to the first threshold but less than the second threshold are in the second quantile, and so on. Internally, the thresholds array is used with [bisect](https://github.com/d3/d3-array/blob/master/README.md#bisect) to find the output quantile associated with the given input value.
+
+# quantile .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/quantile.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+### Threshold Scales
+
+Threshold scales are similar to [quantize scales](#quantize-scales), except they allow you to map arbitrary subsets of the domain to discrete values in the range. The input domain is still continuous, and divided into slices based on a set of threshold values. See [this choropleth](https://observablehq.com/@d3/threshold-choropleth) for an example.
+
+# d3.scaleThreshold ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Constructs a new threshold scale with the specified [*domain*](#threshold_domain) and [*range*](#threshold_range). If *domain* is not specified, it defaults to [0.5]. If *range* is not specified, it defaults to [0, 1]. Thus, the default threshold scale is equivalent to the [Math.round](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Math/round) function for numbers; for example threshold(0.49) returns 0, and threshold(0.51) returns 1.
+
+# threshold (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Given a *value* in the input [domain](#threshold_domain), returns the corresponding value in the output [range](#threshold_range). For example:
+
+```js
+var color = d3.scaleThreshold()
+ .domain([0, 1])
+ .range(["red", "white", "green"]);
+
+color(-1); // "red"
+color(0); // "white"
+color(0.5); // "white"
+color(1); // "green"
+color(1000); // "green"
+```
+
+# threshold .invertExtent (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/choropleth)
+
+Returns the extent of values in the [domain](#threshold_domain) [x0 , x1 ] for the corresponding *value* in the [range](#threshold_range), representing the inverse mapping from range to domain. This method is useful for interaction, say to determine the value in the domain that corresponds to the pixel location under the mouse. For example:
+
+```js
+var color = d3.scaleThreshold()
+ .domain([0, 1])
+ .range(["red", "white", "green"]);
+
+color.invertExtent("red"); // [undefined, 0]
+color.invertExtent("white"); // [0, 1]
+color.invertExtent("green"); // [1, undefined]
+```
+
+# threshold .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *domain* is specified, sets the scale’s domain to the specified array of values. The values must be in ascending order or the behavior of the scale is undefined. The values are typically numbers, but any naturally ordered values (such as strings) will work; a threshold scale can be used to encode any type that is ordered. If the number of values in the scale’s range is N+1, the number of values in the scale’s domain must be N. If there are fewer than N elements in the domain, the additional values in the range are ignored. If there are more than N elements in the domain, the scale may return undefined for some inputs. If *domain* is not specified, returns the scale’s current domain.
+
+# threshold .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+If *range* is specified, sets the scale’s range to the specified array of values. If the number of values in the scale’s domain is N, the number of values in the scale’s range must be N+1. If there are fewer than N+1 elements in the range, the scale may return undefined for some inputs. If there are more than N+1 elements in the range, the additional values are ignored. The elements in the given array need not be numbers; any value or type will work. If *range* is not specified, returns the scale’s current range.
+
+# threshold .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/threshold.js), [Examples](https://observablehq.com/@d3/quantile-quantize-and-threshold-scales)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+### Ordinal Scales
+
+Unlike [continuous scales](#continuous-scales), ordinal scales have a discrete domain and range. For example, an ordinal scale might map a set of named categories to a set of colors, or determine the horizontal positions of columns in a column chart.
+
+# d3.scaleOrdinal ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+Constructs a new ordinal scale with the specified [*domain*](#ordinal_domain) and [*range*](#ordinal_range). If *domain* is not specified, it defaults to the empty array. If *range* is not specified, it defaults to the empty array; an ordinal scale always returns undefined until a non-empty range is defined.
+
+# ordinal (value ) · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+Given a *value* in the input [domain](#ordinal_domain), returns the corresponding value in the output [range](#ordinal_range). If the given *value* is not in the scale’s [domain](#ordinal_domain), returns the [unknown](#ordinal_unknown); or, if the unknown value is [implicit](#scaleImplicit) (the default), then the *value* is implicitly added to the domain and the next-available value in the range is assigned to *value*, such that this and subsequent invocations of the scale given the same input *value* return the same output value.
+
+# ordinal .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+If *domain* is specified, sets the domain to the specified array of values. The first element in *domain* will be mapped to the first element in the range, the second domain value to the second range value, and so on. Domain values are stored internally in an [InternMap](https://github.com/mbostock/internmap) from primitive value to index; the resulting index is then used to retrieve a value from the range. Thus, an ordinal scale’s values must be coercible to a primitive value, and the primitive domain value uniquely identifies the corresponding range value. If *domain* is not specified, this method returns the current domain.
+
+Setting the domain on an ordinal scale is optional if the [unknown value](#ordinal_unknown) is [implicit](#scaleImplicit) (the default). In this case, the domain will be inferred implicitly from usage by assigning each unique value passed to the scale a new value from the range. Note that an explicit domain is recommended to ensure deterministic behavior, as inferring the domain from usage will be dependent on ordering.
+
+# ordinal .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+If *range* is specified, sets the range of the ordinal scale to the specified array of values. The first element in the domain will be mapped to the first element in *range*, the second domain value to the second range value, and so on. If there are fewer elements in the range than in the domain, the scale will reuse values from the start of the range. If *range* is not specified, this method returns the current range.
+
+# ordinal .unknown ([value ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+If *value* is specified, sets the output value of the scale for unknown input values and returns this scale. If *value* is not specified, returns the current unknown value, which defaults to [implicit](#scaleImplicit). The implicit value enables implicit domain construction; see [*ordinal*.domain](#ordinal_domain).
+
+# ordinal .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+Returns an exact copy of this ordinal scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+# d3.scaleImplicit · [Source](https://github.com/d3/d3-scale/blob/master/src/ordinal.js), [Examples](https://observablehq.com/@d3/d3-scaleordinal)
+
+A special value for [*ordinal*.unknown](#ordinal_unknown) that enables implicit domain construction: unknown values are implicitly added to the domain.
+
+#### Band Scales
+
+Band scales are like [ordinal scales](#ordinal-scales) except the output range is continuous and numeric. Discrete output values are automatically computed by the scale by dividing the continuous range into uniform bands. Band scales are typically used for bar charts with an ordinal or categorical dimension. The [unknown value](#ordinal_unknown) of a band scale is effectively undefined: they do not allow implicit domain construction.
+
+# d3.scaleBand ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Constructs a new band scale with the specified [*domain*](#band_domain) and [*range*](#band_range), no [padding](#band_padding), no [rounding](#band_round) and center [alignment](#band_align). If *domain* is not specified, it defaults to the empty domain. If *range* is not specified, it defaults to the unit range [0, 1].
+
+# band (*value*) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Given a *value* in the input [domain](#band_domain), returns the start of the corresponding band derived from the output [range](#band_range). If the given *value* is not in the scale’s domain, returns undefined.
+
+# band .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *domain* is specified, sets the domain to the specified array of values. The first element in *domain* will be mapped to the first band, the second domain value to the second band, and so on. Domain values are stored internally in an [InternMap](https://github.com/mbostock/internmap) from primitive value to index; the resulting index is then used to determine the band. Thus, a band scale’s values must be coercible to a primitive value, and the primitive domain value uniquely identifies the corresponding band. If *domain* is not specified, this method returns the current domain.
+
+# band .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *range* is specified, sets the scale’s range to the specified two-element array of numbers. If the elements in the given array are not numbers, they will be coerced to numbers. If *range* is not specified, returns the scale’s current range, which defaults to [0, 1].
+
+# band .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Sets the scale’s [*range*](#band_range) to the specified two-element array of numbers while also enabling [rounding](#band_round). This is a convenience method equivalent to:
+
+```js
+band
+ .range(range)
+ .round(true);
+```
+
+Rounding is sometimes useful for avoiding antialiasing artifacts, though also consider the [shape-rendering](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering) “crispEdges” styles.
+
+# band .round ([round ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *round* is specified, enables or disables rounding accordingly. If rounding is enabled, the start and stop of each band will be integers. Rounding is sometimes useful for avoiding antialiasing artifacts, though also consider the [shape-rendering](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering) “crispEdges” styles. Note that if the width of the domain is not a multiple of the cardinality of the range, there may be leftover unused space, even without padding! Use [*band*.align](#band_align) to specify how the leftover space is distributed.
+
+# band .paddingInner ([padding ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *padding* is specified, sets the inner padding to the specified number which must be less than or equal to 1. If *padding* is not specified, returns the current inner padding which defaults to 0. The inner padding specifies the proportion of the range that is reserved for blank space between bands; a value of 0 means no blank space between bands, and a value of 1 means a [bandwidth](#band_bandwidth) of zero.
+
+# band .paddingOuter ([padding ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *padding* is specified, sets the outer padding to the specified number which is typically in the range [0, 1]. If *padding* is not specified, returns the current outer padding which defaults to 0. The outer padding specifies the amount of blank space, in terms of multiples of the [step](#band_step), to reserve before the first band and after the last band.
+
+# band .padding ([padding ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+A convenience method for setting the [inner](#band_paddingInner) and [outer](#band_paddingOuter) padding to the same *padding* value. If *padding* is not specified, returns the inner padding.
+
+# band .align ([align ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+If *align* is specified, sets the alignment to the specified value which must be in the range [0, 1]. If *align* is not specified, returns the current alignment which defaults to 0.5. The alignment specifies how outer padding is distributed in the range. A value of 0.5 indicates that the outer padding should be equally distributed before the first band and after the last band; *i.e.*, the bands should be centered within the range. A value of 0 or 1 may be used to shift the bands to one side, say to position them adjacent to an axis. For more, [see this explainer](https://observablehq.com/@d3/band-align).
+
+# band .bandwidth () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Returns the width of each band.
+
+# band .step () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Returns the distance between the starts of adjacent bands.
+
+# band .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scaleband)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
+
+#### Point Scales
+
+Point scales are a variant of [band scales](#band-scales) with the bandwidth fixed to zero. Point scales are typically used for scatterplots with an ordinal or categorical dimension. The [unknown value](#ordinal_unknown) of a point scale is always undefined: they do not allow implicit domain construction.
+
+# d3.scalePoint ([[domain , ]range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Constructs a new point scale with the specified [*domain*](#point_domain) and [*range*](#point_range), no [padding](#point_padding), no [rounding](#point_round) and center [alignment](#point_align). If *domain* is not specified, it defaults to the empty domain. If *range* is not specified, it defaults to the unit range [0, 1].
+
+# point (*value*) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Given a *value* in the input [domain](#point_domain), returns the corresponding point derived from the output [range](#point_range). If the given *value* is not in the scale’s domain, returns undefined.
+
+# point .domain ([domain ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+If *domain* is specified, sets the domain to the specified array of values. The first element in *domain* will be mapped to the first point, the second domain value to the second point, and so on. Domain values are stored internally in an [InternMap](https://github.com/mbostock/internmap) from primitive value to index; the resulting index is then used to determine the point. Thus, a point scale’s values must be coercible to a primitive value, and the primitive domain value uniquely identifies the corresponding point. If *domain* is not specified, this method returns the current domain.
+
+# point .range ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+If *range* is specified, sets the scale’s range to the specified two-element array of numbers. If the elements in the given array are not numbers, they will be coerced to numbers. If *range* is not specified, returns the scale’s current range, which defaults to [0, 1].
+
+# point .rangeRound ([range ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Sets the scale’s [*range*](#point_range) to the specified two-element array of numbers while also enabling [rounding](#point_round). This is a convenience method equivalent to:
+
+```js
+point
+ .range(range)
+ .round(true);
+```
+
+Rounding is sometimes useful for avoiding antialiasing artifacts, though also consider the [shape-rendering](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering) “crispEdges” styles.
+
+# point .round ([round ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+If *round* is specified, enables or disables rounding accordingly. If rounding is enabled, the position of each point will be integers. Rounding is sometimes useful for avoiding antialiasing artifacts, though also consider the [shape-rendering](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/shape-rendering) “crispEdges” styles. Note that if the width of the domain is not a multiple of the cardinality of the range, there may be leftover unused space, even without padding! Use [*point*.align](#point_align) to specify how the leftover space is distributed.
+
+# point .padding ([padding ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+If *padding* is specified, sets the outer padding to the specified number which is typically in the range [0, 1]. If *padding* is not specified, returns the current outer padding which defaults to 0. The outer padding specifies the amount of blank space, in terms of multiples of the [step](#band_step), to reserve before the first point and after the last point. Equivalent to [*band*.paddingOuter](#band_paddingOuter).
+
+# point .align ([align ]) · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+If *align* is specified, sets the alignment to the specified value which must be in the range [0, 1]. If *align* is not specified, returns the current alignment which defaults to 0.5. The alignment specifies how any leftover unused space in the range is distributed. A value of 0.5 indicates that the leftover space should be equally distributed before the first point and after the last point; *i.e.*, the points should be centered within the range. A value of 0 or 1 may be used to shift the points to one side, say to position them adjacent to an axis.
+
+# point .bandwidth () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Returns zero.
+
+# point .step () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Returns the distance between the starts of adjacent points.
+
+# point .copy () · [Source](https://github.com/d3/d3-scale/blob/master/src/band.js), [Examples](https://observablehq.com/@d3/d3-scalepoint)
+
+Returns an exact copy of this scale. Changes to this scale will not affect the returned scale, and vice versa.
diff --git a/node_modules/d3-scale/dist/d3-scale.js b/node_modules/d3-scale/dist/d3-scale.js
new file mode 100644
index 00000000..408d9271
--- /dev/null
+++ b/node_modules/d3-scale/dist/d3-scale.js
@@ -0,0 +1,1196 @@
+// https://d3js.org/d3-scale/ v4.0.2 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-array'), require('d3-interpolate'), require('d3-format'), require('d3-time'), require('d3-time-format')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-array', 'd3-interpolate', 'd3-format', 'd3-time', 'd3-time-format'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3, global.d3, global.d3, global.d3, global.d3));
+})(this, (function (exports, d3Array, d3Interpolate, d3Format, d3Time, d3TimeFormat) { 'use strict';
+
+function initRange(domain, range) {
+ switch (arguments.length) {
+ case 0: break;
+ case 1: this.range(domain); break;
+ default: this.range(range).domain(domain); break;
+ }
+ return this;
+}
+
+function initInterpolator(domain, interpolator) {
+ switch (arguments.length) {
+ case 0: break;
+ case 1: {
+ if (typeof domain === "function") this.interpolator(domain);
+ else this.range(domain);
+ break;
+ }
+ default: {
+ this.domain(domain);
+ if (typeof interpolator === "function") this.interpolator(interpolator);
+ else this.range(interpolator);
+ break;
+ }
+ }
+ return this;
+}
+
+const implicit = Symbol("implicit");
+
+function ordinal() {
+ var index = new d3Array.InternMap(),
+ domain = [],
+ range = [],
+ unknown = implicit;
+
+ function scale(d) {
+ let i = index.get(d);
+ if (i === undefined) {
+ if (unknown !== implicit) return unknown;
+ index.set(d, i = domain.push(d) - 1);
+ }
+ return range[i % range.length];
+ }
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [], index = new d3Array.InternMap();
+ for (const value of _) {
+ if (index.has(value)) continue;
+ index.set(value, domain.push(value) - 1);
+ }
+ return scale;
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), scale) : range.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return ordinal(domain, range).unknown(unknown);
+ };
+
+ initRange.apply(scale, arguments);
+
+ return scale;
+}
+
+function band() {
+ var scale = ordinal().unknown(undefined),
+ domain = scale.domain,
+ ordinalRange = scale.range,
+ r0 = 0,
+ r1 = 1,
+ step,
+ bandwidth,
+ round = false,
+ paddingInner = 0,
+ paddingOuter = 0,
+ align = 0.5;
+
+ delete scale.unknown;
+
+ function rescale() {
+ var n = domain().length,
+ reverse = r1 < r0,
+ start = reverse ? r1 : r0,
+ stop = reverse ? r0 : r1;
+ step = (stop - start) / Math.max(1, n - paddingInner + paddingOuter * 2);
+ if (round) step = Math.floor(step);
+ start += (stop - start - step * (n - paddingInner)) * align;
+ bandwidth = step * (1 - paddingInner);
+ if (round) start = Math.round(start), bandwidth = Math.round(bandwidth);
+ var values = d3Array.range(n).map(function(i) { return start + step * i; });
+ return ordinalRange(reverse ? values.reverse() : values);
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain(_), rescale()) : domain();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? ([r0, r1] = _, r0 = +r0, r1 = +r1, rescale()) : [r0, r1];
+ };
+
+ scale.rangeRound = function(_) {
+ return [r0, r1] = _, r0 = +r0, r1 = +r1, round = true, rescale();
+ };
+
+ scale.bandwidth = function() {
+ return bandwidth;
+ };
+
+ scale.step = function() {
+ return step;
+ };
+
+ scale.round = function(_) {
+ return arguments.length ? (round = !!_, rescale()) : round;
+ };
+
+ scale.padding = function(_) {
+ return arguments.length ? (paddingInner = Math.min(1, paddingOuter = +_), rescale()) : paddingInner;
+ };
+
+ scale.paddingInner = function(_) {
+ return arguments.length ? (paddingInner = Math.min(1, _), rescale()) : paddingInner;
+ };
+
+ scale.paddingOuter = function(_) {
+ return arguments.length ? (paddingOuter = +_, rescale()) : paddingOuter;
+ };
+
+ scale.align = function(_) {
+ return arguments.length ? (align = Math.max(0, Math.min(1, _)), rescale()) : align;
+ };
+
+ scale.copy = function() {
+ return band(domain(), [r0, r1])
+ .round(round)
+ .paddingInner(paddingInner)
+ .paddingOuter(paddingOuter)
+ .align(align);
+ };
+
+ return initRange.apply(rescale(), arguments);
+}
+
+function pointish(scale) {
+ var copy = scale.copy;
+
+ scale.padding = scale.paddingOuter;
+ delete scale.paddingInner;
+ delete scale.paddingOuter;
+
+ scale.copy = function() {
+ return pointish(copy());
+ };
+
+ return scale;
+}
+
+function point() {
+ return pointish(band.apply(null, arguments).paddingInner(1));
+}
+
+function constants(x) {
+ return function() {
+ return x;
+ };
+}
+
+function number$1(x) {
+ return +x;
+}
+
+var unit = [0, 1];
+
+function identity$1(x) {
+ return x;
+}
+
+function normalize(a, b) {
+ return (b -= (a = +a))
+ ? function(x) { return (x - a) / b; }
+ : constants(isNaN(b) ? NaN : 0.5);
+}
+
+function clamper(a, b) {
+ var t;
+ if (a > b) t = a, a = b, b = t;
+ return function(x) { return Math.max(a, Math.min(b, x)); };
+}
+
+// normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
+// interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].
+function bimap(domain, range, interpolate) {
+ var d0 = domain[0], d1 = domain[1], r0 = range[0], r1 = range[1];
+ if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);
+ else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);
+ return function(x) { return r0(d0(x)); };
+}
+
+function polymap(domain, range, interpolate) {
+ var j = Math.min(domain.length, range.length) - 1,
+ d = new Array(j),
+ r = new Array(j),
+ i = -1;
+
+ // Reverse descending domains.
+ if (domain[j] < domain[0]) {
+ domain = domain.slice().reverse();
+ range = range.slice().reverse();
+ }
+
+ while (++i < j) {
+ d[i] = normalize(domain[i], domain[i + 1]);
+ r[i] = interpolate(range[i], range[i + 1]);
+ }
+
+ return function(x) {
+ var i = d3Array.bisect(domain, x, 1, j) - 1;
+ return r[i](d[i](x));
+ };
+}
+
+function copy$1(source, target) {
+ return target
+ .domain(source.domain())
+ .range(source.range())
+ .interpolate(source.interpolate())
+ .clamp(source.clamp())
+ .unknown(source.unknown());
+}
+
+function transformer$2() {
+ var domain = unit,
+ range = unit,
+ interpolate = d3Interpolate.interpolate,
+ transform,
+ untransform,
+ unknown,
+ clamp = identity$1,
+ piecewise,
+ output,
+ input;
+
+ function rescale() {
+ var n = Math.min(domain.length, range.length);
+ if (clamp !== identity$1) clamp = clamper(domain[0], domain[n - 1]);
+ piecewise = n > 2 ? polymap : bimap;
+ output = input = null;
+ return scale;
+ }
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x)));
+ }
+
+ scale.invert = function(y) {
+ return clamp(untransform((input || (input = piecewise(range, domain.map(transform), d3Interpolate.interpolateNumber)))(y)));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain = Array.from(_, number$1), rescale()) : domain.slice();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
+ };
+
+ scale.rangeRound = function(_) {
+ return range = Array.from(_), interpolate = d3Interpolate.interpolateRound, rescale();
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = _ ? true : identity$1, rescale()) : clamp !== identity$1;
+ };
+
+ scale.interpolate = function(_) {
+ return arguments.length ? (interpolate = _, rescale()) : interpolate;
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t, u) {
+ transform = t, untransform = u;
+ return rescale();
+ };
+}
+
+function continuous() {
+ return transformer$2()(identity$1, identity$1);
+}
+
+function tickFormat(start, stop, count, specifier) {
+ var step = d3Array.tickStep(start, stop, count),
+ precision;
+ specifier = d3Format.formatSpecifier(specifier == null ? ",f" : specifier);
+ switch (specifier.type) {
+ case "s": {
+ var value = Math.max(Math.abs(start), Math.abs(stop));
+ if (specifier.precision == null && !isNaN(precision = d3Format.precisionPrefix(step, value))) specifier.precision = precision;
+ return d3Format.formatPrefix(specifier, value);
+ }
+ case "":
+ case "e":
+ case "g":
+ case "p":
+ case "r": {
+ if (specifier.precision == null && !isNaN(precision = d3Format.precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === "e");
+ break;
+ }
+ case "f":
+ case "%": {
+ if (specifier.precision == null && !isNaN(precision = d3Format.precisionFixed(step))) specifier.precision = precision - (specifier.type === "%") * 2;
+ break;
+ }
+ }
+ return d3Format.format(specifier);
+}
+
+function linearish(scale) {
+ var domain = scale.domain;
+
+ scale.ticks = function(count) {
+ var d = domain();
+ return d3Array.ticks(d[0], d[d.length - 1], count == null ? 10 : count);
+ };
+
+ scale.tickFormat = function(count, specifier) {
+ var d = domain();
+ return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);
+ };
+
+ scale.nice = function(count) {
+ if (count == null) count = 10;
+
+ var d = domain();
+ var i0 = 0;
+ var i1 = d.length - 1;
+ var start = d[i0];
+ var stop = d[i1];
+ var prestep;
+ var step;
+ var maxIter = 10;
+
+ if (stop < start) {
+ step = start, start = stop, stop = step;
+ step = i0, i0 = i1, i1 = step;
+ }
+
+ while (maxIter-- > 0) {
+ step = d3Array.tickIncrement(start, stop, count);
+ if (step === prestep) {
+ d[i0] = start;
+ d[i1] = stop;
+ return domain(d);
+ } else if (step > 0) {
+ start = Math.floor(start / step) * step;
+ stop = Math.ceil(stop / step) * step;
+ } else if (step < 0) {
+ start = Math.ceil(start * step) / step;
+ stop = Math.floor(stop * step) / step;
+ } else {
+ break;
+ }
+ prestep = step;
+ }
+
+ return scale;
+ };
+
+ return scale;
+}
+
+function linear() {
+ var scale = continuous();
+
+ scale.copy = function() {
+ return copy$1(scale, linear());
+ };
+
+ initRange.apply(scale, arguments);
+
+ return linearish(scale);
+}
+
+function identity(domain) {
+ var unknown;
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : x;
+ }
+
+ scale.invert = scale;
+
+ scale.domain = scale.range = function(_) {
+ return arguments.length ? (domain = Array.from(_, number$1), scale) : domain.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return identity(domain).unknown(unknown);
+ };
+
+ domain = arguments.length ? Array.from(domain, number$1) : [0, 1];
+
+ return linearish(scale);
+}
+
+function nice(domain, interval) {
+ domain = domain.slice();
+
+ var i0 = 0,
+ i1 = domain.length - 1,
+ x0 = domain[i0],
+ x1 = domain[i1],
+ t;
+
+ if (x1 < x0) {
+ t = i0, i0 = i1, i1 = t;
+ t = x0, x0 = x1, x1 = t;
+ }
+
+ domain[i0] = interval.floor(x0);
+ domain[i1] = interval.ceil(x1);
+ return domain;
+}
+
+function transformLog(x) {
+ return Math.log(x);
+}
+
+function transformExp(x) {
+ return Math.exp(x);
+}
+
+function transformLogn(x) {
+ return -Math.log(-x);
+}
+
+function transformExpn(x) {
+ return -Math.exp(-x);
+}
+
+function pow10(x) {
+ return isFinite(x) ? +("1e" + x) : x < 0 ? 0 : x;
+}
+
+function powp(base) {
+ return base === 10 ? pow10
+ : base === Math.E ? Math.exp
+ : x => Math.pow(base, x);
+}
+
+function logp(base) {
+ return base === Math.E ? Math.log
+ : base === 10 && Math.log10
+ || base === 2 && Math.log2
+ || (base = Math.log(base), x => Math.log(x) / base);
+}
+
+function reflect(f) {
+ return (x, k) => -f(-x, k);
+}
+
+function loggish(transform) {
+ const scale = transform(transformLog, transformExp);
+ const domain = scale.domain;
+ let base = 10;
+ let logs;
+ let pows;
+
+ function rescale() {
+ logs = logp(base), pows = powp(base);
+ if (domain()[0] < 0) {
+ logs = reflect(logs), pows = reflect(pows);
+ transform(transformLogn, transformExpn);
+ } else {
+ transform(transformLog, transformExp);
+ }
+ return scale;
+ }
+
+ scale.base = function(_) {
+ return arguments.length ? (base = +_, rescale()) : base;
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain(_), rescale()) : domain();
+ };
+
+ scale.ticks = count => {
+ const d = domain();
+ let u = d[0];
+ let v = d[d.length - 1];
+ const r = v < u;
+
+ if (r) ([u, v] = [v, u]);
+
+ let i = logs(u);
+ let j = logs(v);
+ let k;
+ let t;
+ const n = count == null ? 10 : +count;
+ let z = [];
+
+ if (!(base % 1) && j - i < n) {
+ i = Math.floor(i), j = Math.ceil(j);
+ if (u > 0) for (; i <= j; ++i) {
+ for (k = 1; k < base; ++k) {
+ t = i < 0 ? k / pows(-i) : k * pows(i);
+ if (t < u) continue;
+ if (t > v) break;
+ z.push(t);
+ }
+ } else for (; i <= j; ++i) {
+ for (k = base - 1; k >= 1; --k) {
+ t = i > 0 ? k / pows(-i) : k * pows(i);
+ if (t < u) continue;
+ if (t > v) break;
+ z.push(t);
+ }
+ }
+ if (z.length * 2 < n) z = d3Array.ticks(u, v, n);
+ } else {
+ z = d3Array.ticks(i, j, Math.min(j - i, n)).map(pows);
+ }
+ return r ? z.reverse() : z;
+ };
+
+ scale.tickFormat = (count, specifier) => {
+ if (count == null) count = 10;
+ if (specifier == null) specifier = base === 10 ? "s" : ",";
+ if (typeof specifier !== "function") {
+ if (!(base % 1) && (specifier = d3Format.formatSpecifier(specifier)).precision == null) specifier.trim = true;
+ specifier = d3Format.format(specifier);
+ }
+ if (count === Infinity) return specifier;
+ const k = Math.max(1, base * count / scale.ticks().length); // TODO fast estimate?
+ return d => {
+ let i = d / pows(Math.round(logs(d)));
+ if (i * base < base - 0.5) i *= base;
+ return i <= k ? specifier(d) : "";
+ };
+ };
+
+ scale.nice = () => {
+ return domain(nice(domain(), {
+ floor: x => pows(Math.floor(logs(x))),
+ ceil: x => pows(Math.ceil(logs(x)))
+ }));
+ };
+
+ return scale;
+}
+
+function log() {
+ const scale = loggish(transformer$2()).domain([1, 10]);
+ scale.copy = () => copy$1(scale, log()).base(scale.base());
+ initRange.apply(scale, arguments);
+ return scale;
+}
+
+function transformSymlog(c) {
+ return function(x) {
+ return Math.sign(x) * Math.log1p(Math.abs(x / c));
+ };
+}
+
+function transformSymexp(c) {
+ return function(x) {
+ return Math.sign(x) * Math.expm1(Math.abs(x)) * c;
+ };
+}
+
+function symlogish(transform) {
+ var c = 1, scale = transform(transformSymlog(c), transformSymexp(c));
+
+ scale.constant = function(_) {
+ return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c;
+ };
+
+ return linearish(scale);
+}
+
+function symlog() {
+ var scale = symlogish(transformer$2());
+
+ scale.copy = function() {
+ return copy$1(scale, symlog()).constant(scale.constant());
+ };
+
+ return initRange.apply(scale, arguments);
+}
+
+function transformPow(exponent) {
+ return function(x) {
+ return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);
+ };
+}
+
+function transformSqrt(x) {
+ return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x);
+}
+
+function transformSquare(x) {
+ return x < 0 ? -x * x : x * x;
+}
+
+function powish(transform) {
+ var scale = transform(identity$1, identity$1),
+ exponent = 1;
+
+ function rescale() {
+ return exponent === 1 ? transform(identity$1, identity$1)
+ : exponent === 0.5 ? transform(transformSqrt, transformSquare)
+ : transform(transformPow(exponent), transformPow(1 / exponent));
+ }
+
+ scale.exponent = function(_) {
+ return arguments.length ? (exponent = +_, rescale()) : exponent;
+ };
+
+ return linearish(scale);
+}
+
+function pow() {
+ var scale = powish(transformer$2());
+
+ scale.copy = function() {
+ return copy$1(scale, pow()).exponent(scale.exponent());
+ };
+
+ initRange.apply(scale, arguments);
+
+ return scale;
+}
+
+function sqrt() {
+ return pow.apply(null, arguments).exponent(0.5);
+}
+
+function square(x) {
+ return Math.sign(x) * x * x;
+}
+
+function unsquare(x) {
+ return Math.sign(x) * Math.sqrt(Math.abs(x));
+}
+
+function radial() {
+ var squared = continuous(),
+ range = [0, 1],
+ round = false,
+ unknown;
+
+ function scale(x) {
+ var y = unsquare(squared(x));
+ return isNaN(y) ? unknown : round ? Math.round(y) : y;
+ }
+
+ scale.invert = function(y) {
+ return squared.invert(square(y));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (squared.domain(_), scale) : squared.domain();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (squared.range((range = Array.from(_, number$1)).map(square)), scale) : range.slice();
+ };
+
+ scale.rangeRound = function(_) {
+ return scale.range(_).round(true);
+ };
+
+ scale.round = function(_) {
+ return arguments.length ? (round = !!_, scale) : round;
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (squared.clamp(_), scale) : squared.clamp();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return radial(squared.domain(), range)
+ .round(round)
+ .clamp(squared.clamp())
+ .unknown(unknown);
+ };
+
+ initRange.apply(scale, arguments);
+
+ return linearish(scale);
+}
+
+function quantile() {
+ var domain = [],
+ range = [],
+ thresholds = [],
+ unknown;
+
+ function rescale() {
+ var i = 0, n = Math.max(1, range.length);
+ thresholds = new Array(n - 1);
+ while (++i < n) thresholds[i - 1] = d3Array.quantileSorted(domain, i / n);
+ return scale;
+ }
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : range[d3Array.bisect(thresholds, x)];
+ }
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return i < 0 ? [NaN, NaN] : [
+ i > 0 ? thresholds[i - 1] : domain[0],
+ i < thresholds.length ? thresholds[i] : domain[domain.length - 1]
+ ];
+ };
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [];
+ for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d);
+ domain.sort(d3Array.ascending);
+ return rescale();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.quantiles = function() {
+ return thresholds.slice();
+ };
+
+ scale.copy = function() {
+ return quantile()
+ .domain(domain)
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(scale, arguments);
+}
+
+function quantize() {
+ var x0 = 0,
+ x1 = 1,
+ n = 1,
+ domain = [0.5],
+ range = [0, 1],
+ unknown;
+
+ function scale(x) {
+ return x != null && x <= x ? range[d3Array.bisect(domain, x, 0, n)] : unknown;
+ }
+
+ function rescale() {
+ var i = -1;
+ domain = new Array(n);
+ while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1);
+ return scale;
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1] = _, x0 = +x0, x1 = +x1, rescale()) : [x0, x1];
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice();
+ };
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return i < 0 ? [NaN, NaN]
+ : i < 1 ? [x0, domain[0]]
+ : i >= n ? [domain[n - 1], x1]
+ : [domain[i - 1], domain[i]];
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : scale;
+ };
+
+ scale.thresholds = function() {
+ return domain.slice();
+ };
+
+ scale.copy = function() {
+ return quantize()
+ .domain([x0, x1])
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(linearish(scale), arguments);
+}
+
+function threshold() {
+ var domain = [0.5],
+ range = [0, 1],
+ unknown,
+ n = 1;
+
+ function scale(x) {
+ return x != null && x <= x ? range[d3Array.bisect(domain, x, 0, n)] : unknown;
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice();
+ };
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return [domain[i - 1], domain[i]];
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return threshold()
+ .domain(domain)
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(scale, arguments);
+}
+
+function date(t) {
+ return new Date(t);
+}
+
+function number(t) {
+ return t instanceof Date ? +t : +new Date(+t);
+}
+
+function calendar(ticks, tickInterval, year, month, week, day, hour, minute, second, format) {
+ var scale = continuous(),
+ invert = scale.invert,
+ domain = scale.domain;
+
+ var formatMillisecond = format(".%L"),
+ formatSecond = format(":%S"),
+ formatMinute = format("%I:%M"),
+ formatHour = format("%I %p"),
+ formatDay = format("%a %d"),
+ formatWeek = format("%b %d"),
+ formatMonth = format("%B"),
+ formatYear = format("%Y");
+
+ function tickFormat(date) {
+ return (second(date) < date ? formatMillisecond
+ : minute(date) < date ? formatSecond
+ : hour(date) < date ? formatMinute
+ : day(date) < date ? formatHour
+ : month(date) < date ? (week(date) < date ? formatDay : formatWeek)
+ : year(date) < date ? formatMonth
+ : formatYear)(date);
+ }
+
+ scale.invert = function(y) {
+ return new Date(invert(y));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? domain(Array.from(_, number)) : domain().map(date);
+ };
+
+ scale.ticks = function(interval) {
+ var d = domain();
+ return ticks(d[0], d[d.length - 1], interval == null ? 10 : interval);
+ };
+
+ scale.tickFormat = function(count, specifier) {
+ return specifier == null ? tickFormat : format(specifier);
+ };
+
+ scale.nice = function(interval) {
+ var d = domain();
+ if (!interval || typeof interval.range !== "function") interval = tickInterval(d[0], d[d.length - 1], interval == null ? 10 : interval);
+ return interval ? domain(nice(d, interval)) : scale;
+ };
+
+ scale.copy = function() {
+ return copy$1(scale, calendar(ticks, tickInterval, year, month, week, day, hour, minute, second, format));
+ };
+
+ return scale;
+}
+
+function time() {
+ return initRange.apply(calendar(d3Time.timeTicks, d3Time.timeTickInterval, d3Time.timeYear, d3Time.timeMonth, d3Time.timeWeek, d3Time.timeDay, d3Time.timeHour, d3Time.timeMinute, d3Time.timeSecond, d3TimeFormat.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments);
+}
+
+function utcTime() {
+ return initRange.apply(calendar(d3Time.utcTicks, d3Time.utcTickInterval, d3Time.utcYear, d3Time.utcMonth, d3Time.utcWeek, d3Time.utcDay, d3Time.utcHour, d3Time.utcMinute, d3Time.utcSecond, d3TimeFormat.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments);
+}
+
+function transformer$1() {
+ var x0 = 0,
+ x1 = 1,
+ t0,
+ t1,
+ k10,
+ transform,
+ interpolator = identity$1,
+ clamp = false,
+ unknown;
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x));
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1];
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = !!_, scale) : clamp;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ function range(interpolate) {
+ return function(_) {
+ var r0, r1;
+ return arguments.length ? ([r0, r1] = _, interpolator = interpolate(r0, r1), scale) : [interpolator(0), interpolator(1)];
+ };
+ }
+
+ scale.range = range(d3Interpolate.interpolate);
+
+ scale.rangeRound = range(d3Interpolate.interpolateRound);
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t) {
+ transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0);
+ return scale;
+ };
+}
+
+function copy(source, target) {
+ return target
+ .domain(source.domain())
+ .interpolator(source.interpolator())
+ .clamp(source.clamp())
+ .unknown(source.unknown());
+}
+
+function sequential() {
+ var scale = linearish(transformer$1()(identity$1));
+
+ scale.copy = function() {
+ return copy(scale, sequential());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function sequentialLog() {
+ var scale = loggish(transformer$1()).domain([1, 10]);
+
+ scale.copy = function() {
+ return copy(scale, sequentialLog()).base(scale.base());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function sequentialSymlog() {
+ var scale = symlogish(transformer$1());
+
+ scale.copy = function() {
+ return copy(scale, sequentialSymlog()).constant(scale.constant());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function sequentialPow() {
+ var scale = powish(transformer$1());
+
+ scale.copy = function() {
+ return copy(scale, sequentialPow()).exponent(scale.exponent());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function sequentialSqrt() {
+ return sequentialPow.apply(null, arguments).exponent(0.5);
+}
+
+function sequentialQuantile() {
+ var domain = [],
+ interpolator = identity$1;
+
+ function scale(x) {
+ if (x != null && !isNaN(x = +x)) return interpolator((d3Array.bisect(domain, x, 1) - 1) / (domain.length - 1));
+ }
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [];
+ for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d);
+ domain.sort(d3Array.ascending);
+ return scale;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ scale.range = function() {
+ return domain.map((d, i) => interpolator(i / (domain.length - 1)));
+ };
+
+ scale.quantiles = function(n) {
+ return Array.from({length: n + 1}, (_, i) => d3Array.quantile(domain, i / n));
+ };
+
+ scale.copy = function() {
+ return sequentialQuantile(interpolator).domain(domain);
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function transformer() {
+ var x0 = 0,
+ x1 = 0.5,
+ x2 = 1,
+ s = 1,
+ t0,
+ t1,
+ t2,
+ k10,
+ k21,
+ interpolator = identity$1,
+ transform,
+ clamp = false,
+ unknown;
+
+ function scale(x) {
+ return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (s * x < s * t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x));
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1, x2] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), t2 = transform(x2 = +x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1, scale) : [x0, x1, x2];
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = !!_, scale) : clamp;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ function range(interpolate) {
+ return function(_) {
+ var r0, r1, r2;
+ return arguments.length ? ([r0, r1, r2] = _, interpolator = d3Interpolate.piecewise(interpolate, [r0, r1, r2]), scale) : [interpolator(0), interpolator(0.5), interpolator(1)];
+ };
+ }
+
+ scale.range = range(d3Interpolate.interpolate);
+
+ scale.rangeRound = range(d3Interpolate.interpolateRound);
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t) {
+ transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1;
+ return scale;
+ };
+}
+
+function diverging() {
+ var scale = linearish(transformer()(identity$1));
+
+ scale.copy = function() {
+ return copy(scale, diverging());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function divergingLog() {
+ var scale = loggish(transformer()).domain([0.1, 1, 10]);
+
+ scale.copy = function() {
+ return copy(scale, divergingLog()).base(scale.base());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function divergingSymlog() {
+ var scale = symlogish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, divergingSymlog()).constant(scale.constant());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function divergingPow() {
+ var scale = powish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, divergingPow()).exponent(scale.exponent());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+function divergingSqrt() {
+ return divergingPow.apply(null, arguments).exponent(0.5);
+}
+
+exports.scaleBand = band;
+exports.scaleDiverging = diverging;
+exports.scaleDivergingLog = divergingLog;
+exports.scaleDivergingPow = divergingPow;
+exports.scaleDivergingSqrt = divergingSqrt;
+exports.scaleDivergingSymlog = divergingSymlog;
+exports.scaleIdentity = identity;
+exports.scaleImplicit = implicit;
+exports.scaleLinear = linear;
+exports.scaleLog = log;
+exports.scaleOrdinal = ordinal;
+exports.scalePoint = point;
+exports.scalePow = pow;
+exports.scaleQuantile = quantile;
+exports.scaleQuantize = quantize;
+exports.scaleRadial = radial;
+exports.scaleSequential = sequential;
+exports.scaleSequentialLog = sequentialLog;
+exports.scaleSequentialPow = sequentialPow;
+exports.scaleSequentialQuantile = sequentialQuantile;
+exports.scaleSequentialSqrt = sequentialSqrt;
+exports.scaleSequentialSymlog = sequentialSymlog;
+exports.scaleSqrt = sqrt;
+exports.scaleSymlog = symlog;
+exports.scaleThreshold = threshold;
+exports.scaleTime = time;
+exports.scaleUtc = utcTime;
+exports.tickFormat = tickFormat;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/node_modules/d3-scale/dist/d3-scale.min.js b/node_modules/d3-scale/dist/d3-scale.min.js
new file mode 100644
index 00000000..1612ea9f
--- /dev/null
+++ b/node_modules/d3-scale/dist/d3-scale.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-scale/ v4.0.2 Copyright 2010-2021 Mike Bostock
+!function(n,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-array"),require("d3-interpolate"),require("d3-format"),require("d3-time"),require("d3-time-format")):"function"==typeof define&&define.amd?define(["exports","d3-array","d3-interpolate","d3-format","d3-time","d3-time-format"],t):t((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{},n.d3,n.d3,n.d3,n.d3,n.d3)}(this,(function(n,t,r,e,u,i){"use strict";function o(n,t){switch(arguments.length){case 0:break;case 1:this.range(n);break;default:this.range(t).domain(n)}return this}function a(n,t){switch(arguments.length){case 0:break;case 1:"function"==typeof n?this.interpolator(n):this.range(n);break;default:this.domain(n),"function"==typeof t?this.interpolator(t):this.range(t)}return this}const c=Symbol("implicit");function l(){var n=new t.InternMap,r=[],e=[],u=c;function i(t){let i=n.get(t);if(void 0===i){if(u!==c)return u;n.set(t,i=r.push(t)-1)}return e[i%e.length]}return i.domain=function(e){if(!arguments.length)return r.slice();r=[],n=new t.InternMap;for(const t of e)n.has(t)||n.set(t,r.push(t)-1);return i},i.range=function(n){return arguments.length?(e=Array.from(n),i):e.slice()},i.unknown=function(n){return arguments.length?(u=n,i):u},i.copy=function(){return l(r,e).unknown(u)},o.apply(i,arguments),i}function f(){var n,r,e=l().unknown(void 0),u=e.domain,i=e.range,a=0,c=1,s=!1,p=0,h=0,g=.5;function m(){var e=u().length,o=ct&&(r=n,n=t,t=r),f=function(r){return Math.max(n,Math.min(t,r))}),u=e>2?y:d,i=o=null,m}function m(t){return null==t||isNaN(t=+t)?e:(i||(i=u(a.map(n),c,l)))(n(f(t)))}return m.invert=function(e){return f(t((o||(o=u(c,a.map(n),r.interpolateNumber)))(e)))},m.domain=function(n){return arguments.length?(a=Array.from(n,p),s()):a.slice()},m.range=function(n){return arguments.length?(c=Array.from(n),s()):c.slice()},m.rangeRound=function(n){return c=Array.from(n),l=r.interpolateRound,s()},m.clamp=function(n){return arguments.length?(f=!!n||g,s()):f!==g},m.interpolate=function(n){return arguments.length?(l=n,s()):l},m.unknown=function(n){return arguments.length?(e=n,m):e},function(r,e){return n=r,t=e,s()}}function k(){return M()(g,g)}function w(n,r,u,i){var o,a=t.tickStep(n,r,u);switch((i=e.formatSpecifier(null==i?",f":i)).type){case"s":var c=Math.max(Math.abs(n),Math.abs(r));return null!=i.precision||isNaN(o=e.precisionPrefix(a,c))||(i.precision=o),e.formatPrefix(i,c);case"":case"e":case"g":case"p":case"r":null!=i.precision||isNaN(o=e.precisionRound(a,Math.max(Math.abs(n),Math.abs(r))))||(i.precision=o-("e"===i.type));break;case"f":case"%":null!=i.precision||isNaN(o=e.precisionFixed(a))||(i.precision=o-2*("%"===i.type))}return e.format(i)}function N(n){var r=n.domain;return n.ticks=function(n){var e=r();return t.ticks(e[0],e[e.length-1],null==n?10:n)},n.tickFormat=function(n,t){var e=r();return w(e[0],e[e.length-1],null==n?10:n,t)},n.nice=function(e){null==e&&(e=10);var u,i,o=r(),a=0,c=o.length-1,l=o[a],f=o[c],s=10;for(f0;){if((i=t.tickIncrement(l,f,e))===u)return o[a]=l,o[c]=f,r(o);if(i>0)l=Math.floor(l/i)*i,f=Math.ceil(f/i)*i;else{if(!(i<0))break;l=Math.ceil(l*i)/i,f=Math.floor(f*i)/i}u=i}return n},n}function b(n,t){var r,e=0,u=(n=n.slice()).length-1,i=n[e],o=n[u];return o-n(-t,r)}function R(n){const r=n(x,q),u=r.domain;let i,o,a=10;function c(){return i=function(n){return n===Math.E?Math.log:10===n&&Math.log10||2===n&&Math.log2||(n=Math.log(n),t=>Math.log(t)/n)}(a),o=function(n){return 10===n?D:n===Math.E?Math.exp:t=>Math.pow(n,t)}(a),u()[0]<0?(i=I(i),o=I(o),n(S,A)):n(x,q),r}return r.base=function(n){return arguments.length?(a=+n,c()):a},r.domain=function(n){return arguments.length?(u(n),c()):u()},r.ticks=n=>{const r=u();let e=r[0],c=r[r.length-1];const l=c0){for(;p<=h;++p)for(f=1;fc)break;m.push(s)}}else for(;p<=h;++p)for(f=a-1;f>=1;--f)if(s=p>0?f/o(-p):f*o(p),!(sc)break;m.push(s)}2*m.length{if(null==n&&(n=10),null==t&&(t=10===a?"s":","),"function"!=typeof t&&(a%1||null!=(t=e.formatSpecifier(t)).precision||(t.trim=!0),t=e.format(t)),n===1/0)return t;const u=Math.max(1,a*n/r.ticks().length);return n=>{let r=n/o(Math.round(i(n)));return r*au(b(u(),{floor:n=>o(Math.floor(i(n))),ceil:n=>o(Math.ceil(i(n)))})),r}function T(n){return function(t){return Math.sign(t)*Math.log1p(Math.abs(t/n))}}function O(n){return function(t){return Math.sign(t)*Math.expm1(Math.abs(t))*n}}function F(n){var t=1,r=n(T(t),O(t));return r.constant=function(r){return arguments.length?n(T(t=+r),O(t)):t},N(r)}function P(n){return function(t){return t<0?-Math.pow(-t,n):Math.pow(t,n)}}function E(n){return n<0?-Math.sqrt(-n):Math.sqrt(n)}function L(n){return n<0?-n*n:n*n}function Q(n){var t=n(g,g),r=1;function e(){return 1===r?n(g,g):.5===r?n(E,L):n(P(r),P(1/r))}return t.exponent=function(n){return arguments.length?(r=+n,e()):r},N(t)}function U(){var n=Q(M());return n.copy=function(){return v(n,U()).exponent(n.exponent())},o.apply(n,arguments),n}function Y(n){return Math.sign(n)*n*n}function j(n){return Math.sign(n)*Math.sqrt(Math.abs(n))}function B(n){return new Date(n)}function C(n){return n instanceof Date?+n:+new Date(+n)}function H(n,t,r,e,u,i,o,a,c,l){var f=k(),s=f.invert,p=f.domain,h=l(".%L"),g=l(":%S"),m=l("%I:%M"),d=l("%I %p"),y=l("%a %d"),M=l("%b %d"),w=l("%B"),N=l("%Y");function x(n){return(c(n)v(t,n()).base(t.base()),o.apply(t,arguments),t},n.scaleOrdinal=l,n.scalePoint=function(){return s(f.apply(null,arguments).paddingInner(1))},n.scalePow=U,n.scaleQuantile=function n(){var r,e=[],u=[],i=[];function a(){var n=0,r=Math.max(1,u.length);for(i=new Array(r-1);++n0?i[t-1]:e[0],t=i?[a[i-1],u]:[a[t-1],a[t]]},l.unknown=function(n){return arguments.length?(r=n,l):l},l.thresholds=function(){return a.slice()},l.copy=function(){return n().domain([e,u]).range(c).unknown(r)},o.apply(N(l),arguments)},n.scaleRadial=function n(){var t,r=k(),e=[0,1],u=!1;function i(n){var e=j(r(n));return isNaN(e)?t:u?Math.round(e):e}return i.invert=function(n){return r.invert(Y(n))},i.domain=function(n){return arguments.length?(r.domain(n),i):r.domain()},i.range=function(n){return arguments.length?(r.range((e=Array.from(n,p)).map(Y)),i):e.slice()},i.rangeRound=function(n){return i.range(n).round(!0)},i.round=function(n){return arguments.length?(u=!!n,i):u},i.clamp=function(n){return arguments.length?(r.clamp(n),i):r.clamp()},i.unknown=function(n){return arguments.length?(t=n,i):t},i.copy=function(){return n(r.domain(),e).round(u).clamp(r.clamp()).unknown(t)},o.apply(i,arguments),N(i)},n.scaleSequential=function n(){var t=N(W()(g));return t.copy=function(){return _(t,n())},a.apply(t,arguments)},n.scaleSequentialLog=function n(){var t=R(W()).domain([1,10]);return t.copy=function(){return _(t,n()).base(t.base())},a.apply(t,arguments)},n.scaleSequentialPow=z,n.scaleSequentialQuantile=function n(){var r=[],e=g;function u(n){if(null!=n&&!isNaN(n=+n))return e((t.bisect(r,n,1)-1)/(r.length-1))}return u.domain=function(n){if(!arguments.length)return r.slice();r=[];for(let t of n)null==t||isNaN(t=+t)||r.push(t);return r.sort(t.ascending),u},u.interpolator=function(n){return arguments.length?(e=n,u):e},u.range=function(){return r.map(((n,t)=>e(t/(r.length-1))))},u.quantiles=function(n){return Array.from({length:n+1},((e,u)=>t.quantile(r,u/n)))},u.copy=function(){return n(e).domain(r)},a.apply(u,arguments)},n.scaleSequentialSqrt=function(){return z.apply(null,arguments).exponent(.5)},n.scaleSequentialSymlog=function n(){var t=F(W());return t.copy=function(){return _(t,n()).constant(t.constant())},a.apply(t,arguments)},n.scaleSqrt=function(){return U.apply(null,arguments).exponent(.5)},n.scaleSymlog=function n(){var t=F(M());return t.copy=function(){return v(t,n()).constant(t.constant())},o.apply(t,arguments)},n.scaleThreshold=function n(){var r,e=[.5],u=[0,1],i=1;function a(n){return null!=n&&n<=n?u[t.bisect(e,n,0,i)]:r}return a.domain=function(n){return arguments.length?(e=Array.from(n),i=Math.min(e.length,u.length-1),a):e.slice()},a.range=function(n){return arguments.length?(u=Array.from(n),i=Math.min(e.length,u.length-1),a):u.slice()},a.invertExtent=function(n){var t=u.indexOf(n);return[e[t-1],e[t]]},a.unknown=function(n){return arguments.length?(r=n,a):r},a.copy=function(){return n().domain(e).range(u).unknown(r)},o.apply(a,arguments)},n.scaleTime=function(){return o.apply(H(u.timeTicks,u.timeTickInterval,u.timeYear,u.timeMonth,u.timeWeek,u.timeDay,u.timeHour,u.timeMinute,u.timeSecond,i.timeFormat).domain([new Date(2e3,0,1),new Date(2e3,0,2)]),arguments)},n.scaleUtc=function(){return o.apply(H(u.utcTicks,u.utcTickInterval,u.utcYear,u.utcMonth,u.utcWeek,u.utcDay,u.utcHour,u.utcMinute,u.utcSecond,i.utcFormat).domain([Date.UTC(2e3,0,1),Date.UTC(2e3,0,2)]),arguments)},n.tickFormat=w,Object.defineProperty(n,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-scale/package.json b/node_modules/d3-scale/package.json
new file mode 100644
index 00000000..4e7a63a7
--- /dev/null
+++ b/node_modules/d3-scale/package.json
@@ -0,0 +1,85 @@
+{
+ "_from": "d3-scale@4",
+ "_id": "d3-scale@4.0.2",
+ "_inBundle": false,
+ "_integrity": "sha512-GZW464g1SH7ag3Y7hXjf8RoUuAFIqklOAq3MRl4OaWabTFJY9PN/E1YklhXLh+OQ3fM9yS2nOkCoS+WLZ6kvxQ==",
+ "_location": "/d3-scale",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-scale@4",
+ "name": "d3-scale",
+ "escapedName": "d3-scale",
+ "rawSpec": "4",
+ "saveSpec": null,
+ "fetchSpec": "4"
+ },
+ "_requiredBy": [
+ "/d3"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-scale/-/d3-scale-4.0.2.tgz",
+ "_shasum": "82b38e8e8ff7080764f8dcec77bd4be393689396",
+ "_spec": "d3-scale@4",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "https://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-scale/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-array": "2.10.0 - 3",
+ "d3-format": "1 - 3",
+ "d3-interpolate": "1.2.0 - 3",
+ "d3-time": "2.1.1 - 3",
+ "d3-time-format": "2 - 4"
+ },
+ "deprecated": false,
+ "description": "Encodings that map abstract data to visual representation.",
+ "devDependencies": {
+ "d3-color": "1 - 3",
+ "eslint": "7",
+ "mocha": "9",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-scale.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-scale/",
+ "jsdelivr": "dist/d3-scale.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "scale",
+ "visualization"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-scale",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-scale.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "TZ=America/Los_Angeles mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-scale.min.js",
+ "version": "4.0.2"
+}
diff --git a/node_modules/d3-scale/src/band.js b/node_modules/d3-scale/src/band.js
new file mode 100644
index 00000000..88e1fbdf
--- /dev/null
+++ b/node_modules/d3-scale/src/band.js
@@ -0,0 +1,101 @@
+import {range as sequence} from "d3-array";
+import {initRange} from "./init.js";
+import ordinal from "./ordinal.js";
+
+export default function band() {
+ var scale = ordinal().unknown(undefined),
+ domain = scale.domain,
+ ordinalRange = scale.range,
+ r0 = 0,
+ r1 = 1,
+ step,
+ bandwidth,
+ round = false,
+ paddingInner = 0,
+ paddingOuter = 0,
+ align = 0.5;
+
+ delete scale.unknown;
+
+ function rescale() {
+ var n = domain().length,
+ reverse = r1 < r0,
+ start = reverse ? r1 : r0,
+ stop = reverse ? r0 : r1;
+ step = (stop - start) / Math.max(1, n - paddingInner + paddingOuter * 2);
+ if (round) step = Math.floor(step);
+ start += (stop - start - step * (n - paddingInner)) * align;
+ bandwidth = step * (1 - paddingInner);
+ if (round) start = Math.round(start), bandwidth = Math.round(bandwidth);
+ var values = sequence(n).map(function(i) { return start + step * i; });
+ return ordinalRange(reverse ? values.reverse() : values);
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain(_), rescale()) : domain();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? ([r0, r1] = _, r0 = +r0, r1 = +r1, rescale()) : [r0, r1];
+ };
+
+ scale.rangeRound = function(_) {
+ return [r0, r1] = _, r0 = +r0, r1 = +r1, round = true, rescale();
+ };
+
+ scale.bandwidth = function() {
+ return bandwidth;
+ };
+
+ scale.step = function() {
+ return step;
+ };
+
+ scale.round = function(_) {
+ return arguments.length ? (round = !!_, rescale()) : round;
+ };
+
+ scale.padding = function(_) {
+ return arguments.length ? (paddingInner = Math.min(1, paddingOuter = +_), rescale()) : paddingInner;
+ };
+
+ scale.paddingInner = function(_) {
+ return arguments.length ? (paddingInner = Math.min(1, _), rescale()) : paddingInner;
+ };
+
+ scale.paddingOuter = function(_) {
+ return arguments.length ? (paddingOuter = +_, rescale()) : paddingOuter;
+ };
+
+ scale.align = function(_) {
+ return arguments.length ? (align = Math.max(0, Math.min(1, _)), rescale()) : align;
+ };
+
+ scale.copy = function() {
+ return band(domain(), [r0, r1])
+ .round(round)
+ .paddingInner(paddingInner)
+ .paddingOuter(paddingOuter)
+ .align(align);
+ };
+
+ return initRange.apply(rescale(), arguments);
+}
+
+function pointish(scale) {
+ var copy = scale.copy;
+
+ scale.padding = scale.paddingOuter;
+ delete scale.paddingInner;
+ delete scale.paddingOuter;
+
+ scale.copy = function() {
+ return pointish(copy());
+ };
+
+ return scale;
+}
+
+export function point() {
+ return pointish(band.apply(null, arguments).paddingInner(1));
+}
diff --git a/node_modules/d3-scale/src/colors.js b/node_modules/d3-scale/src/colors.js
new file mode 100644
index 00000000..b344ddb7
--- /dev/null
+++ b/node_modules/d3-scale/src/colors.js
@@ -0,0 +1,5 @@
+export default function colors(s) {
+ return s.match(/.{6}/g).map(function(x) {
+ return "#" + x;
+ });
+}
diff --git a/node_modules/d3-scale/src/constant.js b/node_modules/d3-scale/src/constant.js
new file mode 100644
index 00000000..be84feec
--- /dev/null
+++ b/node_modules/d3-scale/src/constant.js
@@ -0,0 +1,5 @@
+export default function constants(x) {
+ return function() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-scale/src/continuous.js b/node_modules/d3-scale/src/continuous.js
new file mode 100644
index 00000000..d932095f
--- /dev/null
+++ b/node_modules/d3-scale/src/continuous.js
@@ -0,0 +1,125 @@
+import {bisect} from "d3-array";
+import {interpolate as interpolateValue, interpolateNumber, interpolateRound} from "d3-interpolate";
+import constant from "./constant.js";
+import number from "./number.js";
+
+var unit = [0, 1];
+
+export function identity(x) {
+ return x;
+}
+
+function normalize(a, b) {
+ return (b -= (a = +a))
+ ? function(x) { return (x - a) / b; }
+ : constant(isNaN(b) ? NaN : 0.5);
+}
+
+function clamper(a, b) {
+ var t;
+ if (a > b) t = a, a = b, b = t;
+ return function(x) { return Math.max(a, Math.min(b, x)); };
+}
+
+// normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].
+// interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].
+function bimap(domain, range, interpolate) {
+ var d0 = domain[0], d1 = domain[1], r0 = range[0], r1 = range[1];
+ if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);
+ else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);
+ return function(x) { return r0(d0(x)); };
+}
+
+function polymap(domain, range, interpolate) {
+ var j = Math.min(domain.length, range.length) - 1,
+ d = new Array(j),
+ r = new Array(j),
+ i = -1;
+
+ // Reverse descending domains.
+ if (domain[j] < domain[0]) {
+ domain = domain.slice().reverse();
+ range = range.slice().reverse();
+ }
+
+ while (++i < j) {
+ d[i] = normalize(domain[i], domain[i + 1]);
+ r[i] = interpolate(range[i], range[i + 1]);
+ }
+
+ return function(x) {
+ var i = bisect(domain, x, 1, j) - 1;
+ return r[i](d[i](x));
+ };
+}
+
+export function copy(source, target) {
+ return target
+ .domain(source.domain())
+ .range(source.range())
+ .interpolate(source.interpolate())
+ .clamp(source.clamp())
+ .unknown(source.unknown());
+}
+
+export function transformer() {
+ var domain = unit,
+ range = unit,
+ interpolate = interpolateValue,
+ transform,
+ untransform,
+ unknown,
+ clamp = identity,
+ piecewise,
+ output,
+ input;
+
+ function rescale() {
+ var n = Math.min(domain.length, range.length);
+ if (clamp !== identity) clamp = clamper(domain[0], domain[n - 1]);
+ piecewise = n > 2 ? polymap : bimap;
+ output = input = null;
+ return scale;
+ }
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x)));
+ }
+
+ scale.invert = function(y) {
+ return clamp(untransform((input || (input = piecewise(range, domain.map(transform), interpolateNumber)))(y)));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain = Array.from(_, number), rescale()) : domain.slice();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
+ };
+
+ scale.rangeRound = function(_) {
+ return range = Array.from(_), interpolate = interpolateRound, rescale();
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = _ ? true : identity, rescale()) : clamp !== identity;
+ };
+
+ scale.interpolate = function(_) {
+ return arguments.length ? (interpolate = _, rescale()) : interpolate;
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t, u) {
+ transform = t, untransform = u;
+ return rescale();
+ };
+}
+
+export default function continuous() {
+ return transformer()(identity, identity);
+}
diff --git a/node_modules/d3-scale/src/diverging.js b/node_modules/d3-scale/src/diverging.js
new file mode 100644
index 00000000..f5907488
--- /dev/null
+++ b/node_modules/d3-scale/src/diverging.js
@@ -0,0 +1,104 @@
+import {interpolate, interpolateRound, piecewise} from "d3-interpolate";
+import {identity} from "./continuous.js";
+import {initInterpolator} from "./init.js";
+import {linearish} from "./linear.js";
+import {loggish} from "./log.js";
+import {copy} from "./sequential.js";
+import {symlogish} from "./symlog.js";
+import {powish} from "./pow.js";
+
+function transformer() {
+ var x0 = 0,
+ x1 = 0.5,
+ x2 = 1,
+ s = 1,
+ t0,
+ t1,
+ t2,
+ k10,
+ k21,
+ interpolator = identity,
+ transform,
+ clamp = false,
+ unknown;
+
+ function scale(x) {
+ return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (s * x < s * t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x));
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1, x2] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), t2 = transform(x2 = +x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1, scale) : [x0, x1, x2];
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = !!_, scale) : clamp;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ function range(interpolate) {
+ return function(_) {
+ var r0, r1, r2;
+ return arguments.length ? ([r0, r1, r2] = _, interpolator = piecewise(interpolate, [r0, r1, r2]), scale) : [interpolator(0), interpolator(0.5), interpolator(1)];
+ };
+ }
+
+ scale.range = range(interpolate);
+
+ scale.rangeRound = range(interpolateRound);
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t) {
+ transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1;
+ return scale;
+ };
+}
+
+export default function diverging() {
+ var scale = linearish(transformer()(identity));
+
+ scale.copy = function() {
+ return copy(scale, diverging());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function divergingLog() {
+ var scale = loggish(transformer()).domain([0.1, 1, 10]);
+
+ scale.copy = function() {
+ return copy(scale, divergingLog()).base(scale.base());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function divergingSymlog() {
+ var scale = symlogish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, divergingSymlog()).constant(scale.constant());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function divergingPow() {
+ var scale = powish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, divergingPow()).exponent(scale.exponent());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function divergingSqrt() {
+ return divergingPow.apply(null, arguments).exponent(0.5);
+}
diff --git a/node_modules/d3-scale/src/identity.js b/node_modules/d3-scale/src/identity.js
new file mode 100644
index 00000000..e1d1da77
--- /dev/null
+++ b/node_modules/d3-scale/src/identity.js
@@ -0,0 +1,28 @@
+import {linearish} from "./linear.js";
+import number from "./number.js";
+
+export default function identity(domain) {
+ var unknown;
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : x;
+ }
+
+ scale.invert = scale;
+
+ scale.domain = scale.range = function(_) {
+ return arguments.length ? (domain = Array.from(_, number), scale) : domain.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return identity(domain).unknown(unknown);
+ };
+
+ domain = arguments.length ? Array.from(domain, number) : [0, 1];
+
+ return linearish(scale);
+}
diff --git a/node_modules/d3-scale/src/index.js b/node_modules/d3-scale/src/index.js
new file mode 100644
index 00000000..510103cc
--- /dev/null
+++ b/node_modules/d3-scale/src/index.js
@@ -0,0 +1,78 @@
+export {
+ default as scaleBand,
+ point as scalePoint
+} from "./band.js";
+
+export {
+ default as scaleIdentity
+} from "./identity.js";
+
+export {
+ default as scaleLinear
+} from "./linear.js";
+
+export {
+ default as scaleLog
+} from "./log.js";
+
+export {
+ default as scaleSymlog
+} from "./symlog.js";
+
+export {
+ default as scaleOrdinal,
+ implicit as scaleImplicit
+} from "./ordinal.js";
+
+export {
+ default as scalePow,
+ sqrt as scaleSqrt
+} from "./pow.js";
+
+export {
+ default as scaleRadial
+} from "./radial.js";
+
+export {
+ default as scaleQuantile
+} from "./quantile.js";
+
+export {
+ default as scaleQuantize
+} from "./quantize.js";
+
+export {
+ default as scaleThreshold
+} from "./threshold.js";
+
+export {
+ default as scaleTime
+} from "./time.js";
+
+export {
+ default as scaleUtc
+} from "./utcTime.js";
+
+export {
+ default as scaleSequential,
+ sequentialLog as scaleSequentialLog,
+ sequentialPow as scaleSequentialPow,
+ sequentialSqrt as scaleSequentialSqrt,
+ sequentialSymlog as scaleSequentialSymlog
+} from "./sequential.js";
+
+export {
+ default as scaleSequentialQuantile
+} from "./sequentialQuantile.js";
+
+export {
+ default as scaleDiverging,
+ divergingLog as scaleDivergingLog,
+ divergingPow as scaleDivergingPow,
+ divergingSqrt as scaleDivergingSqrt,
+ divergingSymlog as scaleDivergingSymlog
+} from "./diverging.js";
+
+export {
+ default as tickFormat
+} from "./tickFormat.js";
diff --git a/node_modules/d3-scale/src/init.js b/node_modules/d3-scale/src/init.js
new file mode 100644
index 00000000..61f51a07
--- /dev/null
+++ b/node_modules/d3-scale/src/init.js
@@ -0,0 +1,26 @@
+export function initRange(domain, range) {
+ switch (arguments.length) {
+ case 0: break;
+ case 1: this.range(domain); break;
+ default: this.range(range).domain(domain); break;
+ }
+ return this;
+}
+
+export function initInterpolator(domain, interpolator) {
+ switch (arguments.length) {
+ case 0: break;
+ case 1: {
+ if (typeof domain === "function") this.interpolator(domain);
+ else this.range(domain);
+ break;
+ }
+ default: {
+ this.domain(domain);
+ if (typeof interpolator === "function") this.interpolator(interpolator);
+ else this.range(interpolator);
+ break;
+ }
+ }
+ return this;
+}
diff --git a/node_modules/d3-scale/src/linear.js b/node_modules/d3-scale/src/linear.js
new file mode 100644
index 00000000..3617d32a
--- /dev/null
+++ b/node_modules/d3-scale/src/linear.js
@@ -0,0 +1,70 @@
+import {ticks, tickIncrement} from "d3-array";
+import continuous, {copy} from "./continuous.js";
+import {initRange} from "./init.js";
+import tickFormat from "./tickFormat.js";
+
+export function linearish(scale) {
+ var domain = scale.domain;
+
+ scale.ticks = function(count) {
+ var d = domain();
+ return ticks(d[0], d[d.length - 1], count == null ? 10 : count);
+ };
+
+ scale.tickFormat = function(count, specifier) {
+ var d = domain();
+ return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);
+ };
+
+ scale.nice = function(count) {
+ if (count == null) count = 10;
+
+ var d = domain();
+ var i0 = 0;
+ var i1 = d.length - 1;
+ var start = d[i0];
+ var stop = d[i1];
+ var prestep;
+ var step;
+ var maxIter = 10;
+
+ if (stop < start) {
+ step = start, start = stop, stop = step;
+ step = i0, i0 = i1, i1 = step;
+ }
+
+ while (maxIter-- > 0) {
+ step = tickIncrement(start, stop, count);
+ if (step === prestep) {
+ d[i0] = start
+ d[i1] = stop
+ return domain(d);
+ } else if (step > 0) {
+ start = Math.floor(start / step) * step;
+ stop = Math.ceil(stop / step) * step;
+ } else if (step < 0) {
+ start = Math.ceil(start * step) / step;
+ stop = Math.floor(stop * step) / step;
+ } else {
+ break;
+ }
+ prestep = step;
+ }
+
+ return scale;
+ };
+
+ return scale;
+}
+
+export default function linear() {
+ var scale = continuous();
+
+ scale.copy = function() {
+ return copy(scale, linear());
+ };
+
+ initRange.apply(scale, arguments);
+
+ return linearish(scale);
+}
diff --git a/node_modules/d3-scale/src/log.js b/node_modules/d3-scale/src/log.js
new file mode 100644
index 00000000..170cd697
--- /dev/null
+++ b/node_modules/d3-scale/src/log.js
@@ -0,0 +1,140 @@
+import {ticks} from "d3-array";
+import {format, formatSpecifier} from "d3-format";
+import nice from "./nice.js";
+import {copy, transformer} from "./continuous.js";
+import {initRange} from "./init.js";
+
+function transformLog(x) {
+ return Math.log(x);
+}
+
+function transformExp(x) {
+ return Math.exp(x);
+}
+
+function transformLogn(x) {
+ return -Math.log(-x);
+}
+
+function transformExpn(x) {
+ return -Math.exp(-x);
+}
+
+function pow10(x) {
+ return isFinite(x) ? +("1e" + x) : x < 0 ? 0 : x;
+}
+
+function powp(base) {
+ return base === 10 ? pow10
+ : base === Math.E ? Math.exp
+ : x => Math.pow(base, x);
+}
+
+function logp(base) {
+ return base === Math.E ? Math.log
+ : base === 10 && Math.log10
+ || base === 2 && Math.log2
+ || (base = Math.log(base), x => Math.log(x) / base);
+}
+
+function reflect(f) {
+ return (x, k) => -f(-x, k);
+}
+
+export function loggish(transform) {
+ const scale = transform(transformLog, transformExp);
+ const domain = scale.domain;
+ let base = 10;
+ let logs;
+ let pows;
+
+ function rescale() {
+ logs = logp(base), pows = powp(base);
+ if (domain()[0] < 0) {
+ logs = reflect(logs), pows = reflect(pows);
+ transform(transformLogn, transformExpn);
+ } else {
+ transform(transformLog, transformExp);
+ }
+ return scale;
+ }
+
+ scale.base = function(_) {
+ return arguments.length ? (base = +_, rescale()) : base;
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain(_), rescale()) : domain();
+ };
+
+ scale.ticks = count => {
+ const d = domain();
+ let u = d[0];
+ let v = d[d.length - 1];
+ const r = v < u;
+
+ if (r) ([u, v] = [v, u]);
+
+ let i = logs(u);
+ let j = logs(v);
+ let k;
+ let t;
+ const n = count == null ? 10 : +count;
+ let z = [];
+
+ if (!(base % 1) && j - i < n) {
+ i = Math.floor(i), j = Math.ceil(j);
+ if (u > 0) for (; i <= j; ++i) {
+ for (k = 1; k < base; ++k) {
+ t = i < 0 ? k / pows(-i) : k * pows(i);
+ if (t < u) continue;
+ if (t > v) break;
+ z.push(t);
+ }
+ } else for (; i <= j; ++i) {
+ for (k = base - 1; k >= 1; --k) {
+ t = i > 0 ? k / pows(-i) : k * pows(i);
+ if (t < u) continue;
+ if (t > v) break;
+ z.push(t);
+ }
+ }
+ if (z.length * 2 < n) z = ticks(u, v, n);
+ } else {
+ z = ticks(i, j, Math.min(j - i, n)).map(pows);
+ }
+ return r ? z.reverse() : z;
+ };
+
+ scale.tickFormat = (count, specifier) => {
+ if (count == null) count = 10;
+ if (specifier == null) specifier = base === 10 ? "s" : ",";
+ if (typeof specifier !== "function") {
+ if (!(base % 1) && (specifier = formatSpecifier(specifier)).precision == null) specifier.trim = true;
+ specifier = format(specifier);
+ }
+ if (count === Infinity) return specifier;
+ const k = Math.max(1, base * count / scale.ticks().length); // TODO fast estimate?
+ return d => {
+ let i = d / pows(Math.round(logs(d)));
+ if (i * base < base - 0.5) i *= base;
+ return i <= k ? specifier(d) : "";
+ };
+ };
+
+ scale.nice = () => {
+ return domain(nice(domain(), {
+ floor: x => pows(Math.floor(logs(x))),
+ ceil: x => pows(Math.ceil(logs(x)))
+ }));
+ };
+
+ return scale;
+}
+
+export default function log() {
+ const scale = loggish(transformer()).domain([1, 10]);
+ scale.copy = () => copy(scale, log()).base(scale.base());
+ initRange.apply(scale, arguments);
+ return scale;
+}
diff --git a/node_modules/d3-scale/src/nice.js b/node_modules/d3-scale/src/nice.js
new file mode 100644
index 00000000..a44e6015
--- /dev/null
+++ b/node_modules/d3-scale/src/nice.js
@@ -0,0 +1,18 @@
+export default function nice(domain, interval) {
+ domain = domain.slice();
+
+ var i0 = 0,
+ i1 = domain.length - 1,
+ x0 = domain[i0],
+ x1 = domain[i1],
+ t;
+
+ if (x1 < x0) {
+ t = i0, i0 = i1, i1 = t;
+ t = x0, x0 = x1, x1 = t;
+ }
+
+ domain[i0] = interval.floor(x0);
+ domain[i1] = interval.ceil(x1);
+ return domain;
+}
diff --git a/node_modules/d3-scale/src/number.js b/node_modules/d3-scale/src/number.js
new file mode 100644
index 00000000..d185907f
--- /dev/null
+++ b/node_modules/d3-scale/src/number.js
@@ -0,0 +1,3 @@
+export default function number(x) {
+ return +x;
+}
diff --git a/node_modules/d3-scale/src/ordinal.js b/node_modules/d3-scale/src/ordinal.js
new file mode 100644
index 00000000..74152805
--- /dev/null
+++ b/node_modules/d3-scale/src/ordinal.js
@@ -0,0 +1,46 @@
+import {InternMap} from "d3-array";
+import {initRange} from "./init.js";
+
+export const implicit = Symbol("implicit");
+
+export default function ordinal() {
+ var index = new InternMap(),
+ domain = [],
+ range = [],
+ unknown = implicit;
+
+ function scale(d) {
+ let i = index.get(d);
+ if (i === undefined) {
+ if (unknown !== implicit) return unknown;
+ index.set(d, i = domain.push(d) - 1);
+ }
+ return range[i % range.length];
+ }
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [], index = new InternMap();
+ for (const value of _) {
+ if (index.has(value)) continue;
+ index.set(value, domain.push(value) - 1);
+ }
+ return scale;
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), scale) : range.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return ordinal(domain, range).unknown(unknown);
+ };
+
+ initRange.apply(scale, arguments);
+
+ return scale;
+}
diff --git a/node_modules/d3-scale/src/pow.js b/node_modules/d3-scale/src/pow.js
new file mode 100644
index 00000000..8146f1c0
--- /dev/null
+++ b/node_modules/d3-scale/src/pow.js
@@ -0,0 +1,50 @@
+import {linearish} from "./linear.js";
+import {copy, identity, transformer} from "./continuous.js";
+import {initRange} from "./init.js";
+
+function transformPow(exponent) {
+ return function(x) {
+ return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);
+ };
+}
+
+function transformSqrt(x) {
+ return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x);
+}
+
+function transformSquare(x) {
+ return x < 0 ? -x * x : x * x;
+}
+
+export function powish(transform) {
+ var scale = transform(identity, identity),
+ exponent = 1;
+
+ function rescale() {
+ return exponent === 1 ? transform(identity, identity)
+ : exponent === 0.5 ? transform(transformSqrt, transformSquare)
+ : transform(transformPow(exponent), transformPow(1 / exponent));
+ }
+
+ scale.exponent = function(_) {
+ return arguments.length ? (exponent = +_, rescale()) : exponent;
+ };
+
+ return linearish(scale);
+}
+
+export default function pow() {
+ var scale = powish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, pow()).exponent(scale.exponent());
+ };
+
+ initRange.apply(scale, arguments);
+
+ return scale;
+}
+
+export function sqrt() {
+ return pow.apply(null, arguments).exponent(0.5);
+}
diff --git a/node_modules/d3-scale/src/quantile.js b/node_modules/d3-scale/src/quantile.js
new file mode 100644
index 00000000..303f935a
--- /dev/null
+++ b/node_modules/d3-scale/src/quantile.js
@@ -0,0 +1,57 @@
+import {ascending, bisect, quantileSorted as threshold} from "d3-array";
+import {initRange} from "./init.js";
+
+export default function quantile() {
+ var domain = [],
+ range = [],
+ thresholds = [],
+ unknown;
+
+ function rescale() {
+ var i = 0, n = Math.max(1, range.length);
+ thresholds = new Array(n - 1);
+ while (++i < n) thresholds[i - 1] = threshold(domain, i / n);
+ return scale;
+ }
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : range[bisect(thresholds, x)];
+ }
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return i < 0 ? [NaN, NaN] : [
+ i > 0 ? thresholds[i - 1] : domain[0],
+ i < thresholds.length ? thresholds[i] : domain[domain.length - 1]
+ ];
+ };
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [];
+ for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d);
+ domain.sort(ascending);
+ return rescale();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), rescale()) : range.slice();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.quantiles = function() {
+ return thresholds.slice();
+ };
+
+ scale.copy = function() {
+ return quantile()
+ .domain(domain)
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(scale, arguments);
+}
diff --git a/node_modules/d3-scale/src/quantize.js b/node_modules/d3-scale/src/quantize.js
new file mode 100644
index 00000000..0f540035
--- /dev/null
+++ b/node_modules/d3-scale/src/quantize.js
@@ -0,0 +1,56 @@
+import {bisect} from "d3-array";
+import {linearish} from "./linear.js";
+import {initRange} from "./init.js";
+
+export default function quantize() {
+ var x0 = 0,
+ x1 = 1,
+ n = 1,
+ domain = [0.5],
+ range = [0, 1],
+ unknown;
+
+ function scale(x) {
+ return x != null && x <= x ? range[bisect(domain, x, 0, n)] : unknown;
+ }
+
+ function rescale() {
+ var i = -1;
+ domain = new Array(n);
+ while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1);
+ return scale;
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1] = _, x0 = +x0, x1 = +x1, rescale()) : [x0, x1];
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice();
+ };
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return i < 0 ? [NaN, NaN]
+ : i < 1 ? [x0, domain[0]]
+ : i >= n ? [domain[n - 1], x1]
+ : [domain[i - 1], domain[i]];
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : scale;
+ };
+
+ scale.thresholds = function() {
+ return domain.slice();
+ };
+
+ scale.copy = function() {
+ return quantize()
+ .domain([x0, x1])
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(linearish(scale), arguments);
+}
diff --git a/node_modules/d3-scale/src/radial.js b/node_modules/d3-scale/src/radial.js
new file mode 100644
index 00000000..5c00cc6d
--- /dev/null
+++ b/node_modules/d3-scale/src/radial.js
@@ -0,0 +1,63 @@
+import continuous from "./continuous.js";
+import {initRange} from "./init.js";
+import {linearish} from "./linear.js";
+import number from "./number.js";
+
+function square(x) {
+ return Math.sign(x) * x * x;
+}
+
+function unsquare(x) {
+ return Math.sign(x) * Math.sqrt(Math.abs(x));
+}
+
+export default function radial() {
+ var squared = continuous(),
+ range = [0, 1],
+ round = false,
+ unknown;
+
+ function scale(x) {
+ var y = unsquare(squared(x));
+ return isNaN(y) ? unknown : round ? Math.round(y) : y;
+ }
+
+ scale.invert = function(y) {
+ return squared.invert(square(y));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? (squared.domain(_), scale) : squared.domain();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (squared.range((range = Array.from(_, number)).map(square)), scale) : range.slice();
+ };
+
+ scale.rangeRound = function(_) {
+ return scale.range(_).round(true);
+ };
+
+ scale.round = function(_) {
+ return arguments.length ? (round = !!_, scale) : round;
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (squared.clamp(_), scale) : squared.clamp();
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return radial(squared.domain(), range)
+ .round(round)
+ .clamp(squared.clamp())
+ .unknown(unknown);
+ };
+
+ initRange.apply(scale, arguments);
+
+ return linearish(scale);
+}
diff --git a/node_modules/d3-scale/src/sequential.js b/node_modules/d3-scale/src/sequential.js
new file mode 100644
index 00000000..547dc404
--- /dev/null
+++ b/node_modules/d3-scale/src/sequential.js
@@ -0,0 +1,107 @@
+import {interpolate, interpolateRound} from "d3-interpolate";
+import {identity} from "./continuous.js";
+import {initInterpolator} from "./init.js";
+import {linearish} from "./linear.js";
+import {loggish} from "./log.js";
+import {symlogish} from "./symlog.js";
+import {powish} from "./pow.js";
+
+function transformer() {
+ var x0 = 0,
+ x1 = 1,
+ t0,
+ t1,
+ k10,
+ transform,
+ interpolator = identity,
+ clamp = false,
+ unknown;
+
+ function scale(x) {
+ return x == null || isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x));
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? ([x0, x1] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1];
+ };
+
+ scale.clamp = function(_) {
+ return arguments.length ? (clamp = !!_, scale) : clamp;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ function range(interpolate) {
+ return function(_) {
+ var r0, r1;
+ return arguments.length ? ([r0, r1] = _, interpolator = interpolate(r0, r1), scale) : [interpolator(0), interpolator(1)];
+ };
+ }
+
+ scale.range = range(interpolate);
+
+ scale.rangeRound = range(interpolateRound);
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ return function(t) {
+ transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0);
+ return scale;
+ };
+}
+
+export function copy(source, target) {
+ return target
+ .domain(source.domain())
+ .interpolator(source.interpolator())
+ .clamp(source.clamp())
+ .unknown(source.unknown());
+}
+
+export default function sequential() {
+ var scale = linearish(transformer()(identity));
+
+ scale.copy = function() {
+ return copy(scale, sequential());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function sequentialLog() {
+ var scale = loggish(transformer()).domain([1, 10]);
+
+ scale.copy = function() {
+ return copy(scale, sequentialLog()).base(scale.base());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function sequentialSymlog() {
+ var scale = symlogish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, sequentialSymlog()).constant(scale.constant());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function sequentialPow() {
+ var scale = powish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, sequentialPow()).exponent(scale.exponent());
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
+
+export function sequentialSqrt() {
+ return sequentialPow.apply(null, arguments).exponent(0.5);
+}
diff --git a/node_modules/d3-scale/src/sequentialQuantile.js b/node_modules/d3-scale/src/sequentialQuantile.js
new file mode 100644
index 00000000..7437e558
--- /dev/null
+++ b/node_modules/d3-scale/src/sequentialQuantile.js
@@ -0,0 +1,38 @@
+import {ascending, bisect, quantile} from "d3-array";
+import {identity} from "./continuous.js";
+import {initInterpolator} from "./init.js";
+
+export default function sequentialQuantile() {
+ var domain = [],
+ interpolator = identity;
+
+ function scale(x) {
+ if (x != null && !isNaN(x = +x)) return interpolator((bisect(domain, x, 1) - 1) / (domain.length - 1));
+ }
+
+ scale.domain = function(_) {
+ if (!arguments.length) return domain.slice();
+ domain = [];
+ for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d);
+ domain.sort(ascending);
+ return scale;
+ };
+
+ scale.interpolator = function(_) {
+ return arguments.length ? (interpolator = _, scale) : interpolator;
+ };
+
+ scale.range = function() {
+ return domain.map((d, i) => interpolator(i / (domain.length - 1)));
+ };
+
+ scale.quantiles = function(n) {
+ return Array.from({length: n + 1}, (_, i) => quantile(domain, i / n));
+ };
+
+ scale.copy = function() {
+ return sequentialQuantile(interpolator).domain(domain);
+ };
+
+ return initInterpolator.apply(scale, arguments);
+}
diff --git a/node_modules/d3-scale/src/symlog.js b/node_modules/d3-scale/src/symlog.js
new file mode 100644
index 00000000..125fa7b5
--- /dev/null
+++ b/node_modules/d3-scale/src/symlog.js
@@ -0,0 +1,35 @@
+import {linearish} from "./linear.js";
+import {copy, transformer} from "./continuous.js";
+import {initRange} from "./init.js";
+
+function transformSymlog(c) {
+ return function(x) {
+ return Math.sign(x) * Math.log1p(Math.abs(x / c));
+ };
+}
+
+function transformSymexp(c) {
+ return function(x) {
+ return Math.sign(x) * Math.expm1(Math.abs(x)) * c;
+ };
+}
+
+export function symlogish(transform) {
+ var c = 1, scale = transform(transformSymlog(c), transformSymexp(c));
+
+ scale.constant = function(_) {
+ return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c;
+ };
+
+ return linearish(scale);
+}
+
+export default function symlog() {
+ var scale = symlogish(transformer());
+
+ scale.copy = function() {
+ return copy(scale, symlog()).constant(scale.constant());
+ };
+
+ return initRange.apply(scale, arguments);
+}
diff --git a/node_modules/d3-scale/src/threshold.js b/node_modules/d3-scale/src/threshold.js
new file mode 100644
index 00000000..bbdbe392
--- /dev/null
+++ b/node_modules/d3-scale/src/threshold.js
@@ -0,0 +1,39 @@
+import {bisect} from "d3-array";
+import {initRange} from "./init.js";
+
+export default function threshold() {
+ var domain = [0.5],
+ range = [0, 1],
+ unknown,
+ n = 1;
+
+ function scale(x) {
+ return x != null && x <= x ? range[bisect(domain, x, 0, n)] : unknown;
+ }
+
+ scale.domain = function(_) {
+ return arguments.length ? (domain = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice();
+ };
+
+ scale.range = function(_) {
+ return arguments.length ? (range = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice();
+ };
+
+ scale.invertExtent = function(y) {
+ var i = range.indexOf(y);
+ return [domain[i - 1], domain[i]];
+ };
+
+ scale.unknown = function(_) {
+ return arguments.length ? (unknown = _, scale) : unknown;
+ };
+
+ scale.copy = function() {
+ return threshold()
+ .domain(domain)
+ .range(range)
+ .unknown(unknown);
+ };
+
+ return initRange.apply(scale, arguments);
+}
diff --git a/node_modules/d3-scale/src/tickFormat.js b/node_modules/d3-scale/src/tickFormat.js
new file mode 100644
index 00000000..15fc54ef
--- /dev/null
+++ b/node_modules/d3-scale/src/tickFormat.js
@@ -0,0 +1,29 @@
+import {tickStep} from "d3-array";
+import {format, formatPrefix, formatSpecifier, precisionFixed, precisionPrefix, precisionRound} from "d3-format";
+
+export default function tickFormat(start, stop, count, specifier) {
+ var step = tickStep(start, stop, count),
+ precision;
+ specifier = formatSpecifier(specifier == null ? ",f" : specifier);
+ switch (specifier.type) {
+ case "s": {
+ var value = Math.max(Math.abs(start), Math.abs(stop));
+ if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;
+ return formatPrefix(specifier, value);
+ }
+ case "":
+ case "e":
+ case "g":
+ case "p":
+ case "r": {
+ if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === "e");
+ break;
+ }
+ case "f":
+ case "%": {
+ if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === "%") * 2;
+ break;
+ }
+ }
+ return format(specifier);
+}
diff --git a/node_modules/d3-scale/src/time.js b/node_modules/d3-scale/src/time.js
new file mode 100644
index 00000000..d1ea678f
--- /dev/null
+++ b/node_modules/d3-scale/src/time.js
@@ -0,0 +1,71 @@
+import {timeYear, timeMonth, timeWeek, timeDay, timeHour, timeMinute, timeSecond, timeTicks, timeTickInterval} from "d3-time";
+import {timeFormat} from "d3-time-format";
+import continuous, {copy} from "./continuous.js";
+import {initRange} from "./init.js";
+import nice from "./nice.js";
+
+function date(t) {
+ return new Date(t);
+}
+
+function number(t) {
+ return t instanceof Date ? +t : +new Date(+t);
+}
+
+export function calendar(ticks, tickInterval, year, month, week, day, hour, minute, second, format) {
+ var scale = continuous(),
+ invert = scale.invert,
+ domain = scale.domain;
+
+ var formatMillisecond = format(".%L"),
+ formatSecond = format(":%S"),
+ formatMinute = format("%I:%M"),
+ formatHour = format("%I %p"),
+ formatDay = format("%a %d"),
+ formatWeek = format("%b %d"),
+ formatMonth = format("%B"),
+ formatYear = format("%Y");
+
+ function tickFormat(date) {
+ return (second(date) < date ? formatMillisecond
+ : minute(date) < date ? formatSecond
+ : hour(date) < date ? formatMinute
+ : day(date) < date ? formatHour
+ : month(date) < date ? (week(date) < date ? formatDay : formatWeek)
+ : year(date) < date ? formatMonth
+ : formatYear)(date);
+ }
+
+ scale.invert = function(y) {
+ return new Date(invert(y));
+ };
+
+ scale.domain = function(_) {
+ return arguments.length ? domain(Array.from(_, number)) : domain().map(date);
+ };
+
+ scale.ticks = function(interval) {
+ var d = domain();
+ return ticks(d[0], d[d.length - 1], interval == null ? 10 : interval);
+ };
+
+ scale.tickFormat = function(count, specifier) {
+ return specifier == null ? tickFormat : format(specifier);
+ };
+
+ scale.nice = function(interval) {
+ var d = domain();
+ if (!interval || typeof interval.range !== "function") interval = tickInterval(d[0], d[d.length - 1], interval == null ? 10 : interval);
+ return interval ? domain(nice(d, interval)) : scale;
+ };
+
+ scale.copy = function() {
+ return copy(scale, calendar(ticks, tickInterval, year, month, week, day, hour, minute, second, format));
+ };
+
+ return scale;
+}
+
+export default function time() {
+ return initRange.apply(calendar(timeTicks, timeTickInterval, timeYear, timeMonth, timeWeek, timeDay, timeHour, timeMinute, timeSecond, timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments);
+}
diff --git a/node_modules/d3-scale/src/utcTime.js b/node_modules/d3-scale/src/utcTime.js
new file mode 100644
index 00000000..9741716b
--- /dev/null
+++ b/node_modules/d3-scale/src/utcTime.js
@@ -0,0 +1,8 @@
+import {utcYear, utcMonth, utcWeek, utcDay, utcHour, utcMinute, utcSecond, utcTicks, utcTickInterval} from "d3-time";
+import {utcFormat} from "d3-time-format";
+import {calendar} from "./time.js";
+import {initRange} from "./init.js";
+
+export default function utcTime() {
+ return initRange.apply(calendar(utcTicks, utcTickInterval, utcYear, utcMonth, utcWeek, utcDay, utcHour, utcMinute, utcSecond, utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments);
+}
diff --git a/node_modules/d3-selection/LICENSE b/node_modules/d3-selection/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-selection/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-selection/README.md b/node_modules/d3-selection/README.md
new file mode 100644
index 00000000..b8513c67
--- /dev/null
+++ b/node_modules/d3-selection/README.md
@@ -0,0 +1,863 @@
+# d3-selection
+
+Selections allow powerful data-driven transformation of the document object model (DOM): set [attributes](#selection_attr), [styles](#selection_style), [properties](#selection_property), [HTML](#selection_html) or [text](#selection_text) content, and more. Using the [data join](#joining-data)’s [enter](#selection_enter) and [exit](#selection_enter) selections, you can also [add](#selection_append) or [remove](#selection_remove) elements to correspond to data.
+
+Selection methods typically return the current selection, or a new selection, allowing the concise application of multiple operations on a given selection via method chaining. For example, to set the class and color style of all paragraph elements in the current document:
+
+```js
+d3.selectAll("p")
+ .attr("class", "graf")
+ .style("color", "red");
+```
+
+This is equivalent to:
+
+```js
+const p = d3.selectAll("p");
+p.attr("class", "graf");
+p.style("color", "red");
+```
+
+By convention, selection methods that return the current selection use *four* spaces of indent, while methods that return a new selection use only *two*. This helps reveal changes of context by making them stick out of the chain:
+
+```js
+d3.select("body")
+ .append("svg")
+ .attr("width", 960)
+ .attr("height", 500)
+ .append("g")
+ .attr("transform", "translate(20,20)")
+ .append("rect")
+ .attr("width", 920)
+ .attr("height", 460);
+```
+
+Selections are immutable. All selection methods that affect which elements are selected (or their order) return a new selection rather than modifying the current selection. However, note that elements are necessarily mutable, as selections drive transformations of the document!
+
+For more, see [the d3-selection collection on Observable](https://observablehq.com/collection/@d3/d3-selection).
+
+## Installing
+
+If you use npm, `npm install d3-selection`. You can also download the [latest release on GitHub](https://github.com/d3/d3-selection/releases/latest). For vanilla HTML in modern browsers, import d3-selection from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-selection’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+```
+
+[Try d3-selection in your browser.](https://observablehq.com/collection/@d3/d3-selection)
+
+## API Reference
+
+* [Selecting Elements](#selecting-elements)
+* [Modifying Elements](#modifying-elements)
+* [Joining Data](#joining-data)
+* [Handling Events](#handling-events)
+* [Control Flow](#control-flow)
+* [Local Variables](#local-variables)
+* [Namespaces](#namespaces)
+
+### Selecting Elements
+
+Selection methods accept [W3C selector strings](http://www.w3.org/TR/selectors-api/) such as `.fancy` to select elements with the class *fancy*, or `div` to select DIV elements. Selection methods come in two forms: select and selectAll: the former selects only the first matching element, while the latter selects all matching elements in document order. The top-level selection methods, [d3.select](#select) and [d3.selectAll](#selectAll), query the entire document; the subselection methods, [*selection*.select](#selection_select) and [*selection*.selectAll](#selection_selectAll), restrict selection to descendants of the selected elements.
+
+# d3.selection () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/index.js)
+
+[Selects](#select) the root element, `document.documentElement`. This function can also be used to test for selections (`instanceof d3.selection`) or to extend the selection prototype. For example, to add a method to check checkboxes:
+
+```js
+d3.selection.prototype.checked = function(value) {
+ return arguments.length < 1
+ ? this.property("checked")
+ : this.property("checked", !!value);
+};
+```
+
+And then to use:
+
+```js
+d3.selectAll("input[type=checkbox]").checked(true);
+```
+
+# d3.select (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/select.js)
+
+Selects the first element that matches the specified *selector* string. If no elements match the *selector*, returns an empty selection. If multiple elements match the *selector*, only the first matching element (in document order) will be selected. For example, to select the first anchor element:
+
+```js
+const anchor = d3.select("a");
+```
+
+If the *selector* is not a string, instead selects the specified node; this is useful if you already have a reference to a node, such as `this` within an event listener or a global such as `document.body`. For example, to make a clicked paragraph red:
+
+```js
+d3.selectAll("p").on("click", function(event) {
+ d3.select(this).style("color", "red");
+});
+```
+
+# d3.selectAll (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selectAll.js)
+
+Selects all elements that match the specified *selector* string. The elements will be selected in document order (top-to-bottom). If no elements in the document match the *selector*, or if the *selector* is null or undefined, returns an empty selection. For example, to select all paragraphs:
+
+```js
+const paragraph = d3.selectAll("p");
+```
+
+If the *selector* is not a string, instead selects the specified array of nodes; this is useful if you already have a reference to nodes, such as `this.childNodes` within an event listener or a global such as `document.links`. The nodes may instead be an iterable, or a pseudo-array such as a NodeList. For example, to color all links red:
+
+```js
+d3.selectAll(document.links).style("color", "red");
+```
+
+# selection .select (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/select.js)
+
+For each selected element, selects the first descendant element that matches the specified *selector* string. If no element matches the specified selector for the current element, the element at the current index will be null in the returned selection. (If the *selector* is null, every element in the returned selection will be null, resulting in an empty selection.) If the current element has associated data, this data is propagated to the corresponding selected element. If multiple elements match the selector, only the first matching element in document order is selected. For example, to select the first bold element in every paragraph:
+
+```js
+const b = d3.selectAll("p").select("b");
+```
+
+If the *selector* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). It must return an element, or null if there is no matching element. For example, to select the previous sibling of each paragraph:
+
+```js
+const previous = d3.selectAll("p").select(function() {
+ return this.previousElementSibling;
+});
+```
+
+Unlike [*selection*.selectAll](#selection_selectAll), *selection*.select does not affect grouping: it preserves the existing group structure and indexes, and propagates data (if any) to selected children. Grouping plays an important role in the [data join](#joining-data). See [Nested Selections](http://bost.ocks.org/mike/nest/) and [How Selections Work](http://bost.ocks.org/mike/selection/) for more on this topic.
+
+# selection .selectAll (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/selectAll.js)
+
+For each selected element, selects the descendant elements that match the specified *selector* string. The elements in the returned selection are grouped by their corresponding parent node in this selection. If no element matches the specified selector for the current element, or if the *selector* is null, the group at the current index will be empty. The selected elements do not inherit data from this selection; use [*selection*.data](#selection_data) to propagate data to children. For example, to select the bold elements in every paragraph:
+
+```js
+const b = d3.selectAll("p").selectAll("b");
+```
+
+If the *selector* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). It must return an array of elements (or an iterable, or a pseudo-array such as a NodeList), or the empty array if there are no matching elements. For example, to select the previous and next siblings of each paragraph:
+
+```js
+const sibling = d3.selectAll("p").selectAll(function() {
+ return [
+ this.previousElementSibling,
+ this.nextElementSibling
+ ];
+});
+```
+
+Unlike [*selection*.select](#selection_select), *selection*.selectAll does affect grouping: each selected descendant is grouped by the parent element in the originating selection. Grouping plays an important role in the [data join](#joining-data). See [Nested Selections](http://bost.ocks.org/mike/nest/) and [How Selections Work](http://bost.ocks.org/mike/selection/) for more on this topic.
+
+# selection .filter (filter ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/filter.js)
+
+Filters the selection, returning a new selection that contains only the elements for which the specified *filter* is true. The *filter* may be specified either as a selector string or a function. If the *filter* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]).
+
+For example, to filter a selection of table rows to contain only even rows:
+
+```js
+const even = d3.selectAll("tr").filter(":nth-child(even)");
+```
+
+This is approximately equivalent to using [d3.selectAll](#selectAll) directly, although the indexes may be different:
+
+```js
+const even = d3.selectAll("tr:nth-child(even)");
+```
+
+Similarly, using a function:
+
+```js
+const even = d3.selectAll("tr").filter((d, i) => i & 1);
+```
+
+Or using [*selection*.select](#selection_select) (and avoiding an arrow function, since *this* is needed to refer to the current element):
+
+```js
+const even = d3.selectAll("tr").select(function(d, i) { return i & 1 ? this : null; });
+```
+
+Note that the `:nth-child` pseudo-class is a one-based index rather than a zero-based index. Also, the above filter functions do not have precisely the same meaning as `:nth-child`; they rely on the selection index rather than the number of preceding sibling elements in the DOM.
+
+The returned filtered selection preserves the parents of this selection, but like [*array*.filter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter), it does not preserve indexes as some elements may be removed; use [*selection*.select](#selection_select) to preserve the index, if needed.
+
+# selection .merge (other ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/merge.js)
+
+Returns a new selection merging this selection with the specified *other* selection or transition. The returned selection has the same number of groups and the same parents as this selection. Any missing (null) elements in this selection are filled with the corresponding element, if present (not null), from the specified *selection*. (If the *other* selection has additional groups or parents, they are ignored.)
+
+This method is used internally by [*selection*.join](#selection_join) to merge the [enter](#selection_enter) and [update](#selection_data) selections after [binding data](#joining-data). You can also merge explicitly, although note that since merging is based on element index, you should use operations that preserve index, such as [*selection*.select](#selection_select) instead of [*selection*.filter](#selection_filter). For example:
+
+```js
+const odd = selection.select(function(d, i) { return i & 1 ? this : null; ));
+const even = selection.select(function(d, i) { return i & 1 ? null : this; ));
+const merged = odd.merge(even);
+```
+
+See [*selection*.data](#selection_data) for more.
+
+This method is not intended for concatenating arbitrary selections, however: if both this selection and the specified *other* selection have (non-null) elements at the same index, this selection’s element is returned in the merge and the *other* selection’s element is ignored.
+
+# selection .selectChild ([selector ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/selectChild.js)
+
+Returns a new selection with the (first) child of each element of the current selection matching the *selector*. If no *selector* is specified, selects the first child (if any). If the *selector* is specified as a string, selects the first child that matches (if any). If the *selector* is a function, it is evaluated for each of the children nodes, in order, being passed the child (*child*), the child’s index (*i*), and the list of children (*children*); the method selects the first child for which the selector return truthy, if any.
+
+# selection .selectChildren ([selector ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/selectChildren.js)
+
+Returns a new selection with the children of each element of the current selection matching the *selector*. If no *selector* is specified, selects all the children. If the *selector* is specified as a string, selects the children that match (if any). If the *selector* is a function, it is evaluated for each of the children nodes, in order, being passed the child (*child*), the child’s index (*i*), and the list of children (*children*); the method selects all children for which the selector return truthy.
+
+# selection .selection () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/index.js)
+
+Returns the selection (for symmetry with [transition .selection](https://github.com/d3/d3-transition/blob/master/README.md#transition_selection)).
+
+# d3.matcher (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/matcher.js)
+
+Given the specified *selector*, returns a function which returns true if `this` element [matches](https://developer.mozilla.org/en-US/docs/Web/API/Element/matches) the specified selector. This method is used internally by [*selection*.filter](#selection_filter). For example, this:
+
+```js
+const div = selection.filter("div");
+```
+
+Is equivalent to:
+
+```js
+const div = selection.filter(d3.matcher("div"));
+```
+
+(Although D3 is not a compatibility layer, this implementation does support vendor-prefixed implementations due to the recent standardization of *element*.matches.)
+
+# d3.selector (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selector.js)
+
+Given the specified *selector*, returns a function which returns the first descendant of `this` element that matches the specified selector. This method is used internally by [*selection*.select](#selection_select). For example, this:
+
+```js
+const div = selection.select("div");
+```
+
+Is equivalent to:
+
+```js
+const div = selection.select(d3.selector("div"));
+```
+
+# d3.selectorAll (selector ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selectAll.js)
+
+Given the specified *selector*, returns a function which returns all descendants of `this` element that match the specified selector. This method is used internally by [*selection*.selectAll](#selection_selectAll). For example, this:
+
+```js
+const div = selection.selectAll("div");
+```
+
+Is equivalent to:
+
+```js
+const div = selection.selectAll(d3.selectorAll("div"));
+```
+
+# d3.window (node ) · [Source](https://github.com/d3/d3-selection/blob/master/src/window.js)
+
+Returns the owner window for the specified *node*. If *node* is a node, returns the owner document’s default view; if *node* is a document, returns its default view; otherwise returns the *node*.
+
+# d3.style (node , name ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/style.js)
+
+Returns the value of the style property with the specified *name* for the specified *node*. If the *node* has an inline style with the specified *name*, its value is returned; otherwise, the [computed property value](https://developer.mozilla.org/en-US/docs/Web/CSS/computed_value) is returned. See also [*selection*.style](#selection_style).
+
+### Modifying Elements
+
+After selecting elements, use the selection’s transformation methods to affect document content. For example, to set the name attribute and color style of an anchor element:
+
+```js
+d3.select("a")
+ .attr("name", "fred")
+ .style("color", "red");
+```
+
+To experiment with selections, visit [d3js.org](https://d3js.org) and open your browser’s developer console! (In Chrome, open the console with ⌥⌘J.) Select elements and then inspect the returned selection to see which elements are selected and how they are grouped. Call selection methods and see how the page content changes.
+
+# selection .attr (name [, value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/attr.js)
+
+If a *value* is specified, sets the attribute with the specified *name* to the specified value on the selected elements and returns this selection. If the *value* is a constant, all elements are given the same attribute value; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to set each element’s attribute. A null value will remove the specified attribute.
+
+If a *value* is not specified, returns the current value of the specified attribute for the first (non-null) element in the selection. This is generally useful only if you know that the selection contains exactly one element.
+
+The specified *name* may have a namespace prefix, such as `xlink:href` to specify the `href` attribute in the XLink namespace. See [namespaces](#namespaces) for the map of supported namespaces; additional namespaces can be registered by adding to the map.
+
+# selection .classed (names [, value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/classed.js)
+
+If a *value* is specified, assigns or unassigns the specified CSS class *names* on the selected elements by setting the `class` attribute or modifying the `classList` property and returns this selection. The specified *names* is a string of space-separated class names. For example, to assign the classes `foo` and `bar` to the selected elements:
+
+```js
+selection.classed("foo bar", true);
+```
+
+If the *value* is truthy, then all elements are assigned the specified classes; otherwise, the classes are unassigned. If the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to assign or unassign classes on each element. For example, to randomly associate the class *foo* with on average half the selected elements:
+
+```js
+selection.classed("foo", () => Math.random() > 0.5);
+```
+
+If a *value* is not specified, returns true if and only if the first (non-null) selected element has the specified *classes*. This is generally useful only if you know the selection contains exactly one element.
+
+# selection .style (name [, value [, priority ]]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/style.js)
+
+If a *value* is specified, sets the style property with the specified *name* to the specified value on the selected elements and returns this selection. If the *value* is a constant, then all elements are given the same style property value; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to set each element’s style property. A null value will remove the style property. An optional *priority* may also be specified, either as null or the string `important` (without the exclamation point).
+
+If a *value* is not specified, returns the current value of the specified style property for the first (non-null) element in the selection. The current value is defined as the element’s inline value, if present, and otherwise its [computed value](https://developer.mozilla.org/en-US/docs/Web/CSS/computed_value). Accessing the current style value is generally useful only if you know the selection contains exactly one element.
+
+Caution: unlike many SVG attributes, CSS styles typically have associated units. For example, `3px` is a valid stroke-width property value, while `3` is not. Some browsers implicitly assign the `px` (pixel) unit to numeric values, but not all browsers do: IE, for example, throws an “invalid arguments” error!
+
+# selection .property (name [, value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/property.js)
+
+Some HTML elements have special properties that are not addressable using attributes or styles, such as a form field’s text `value` and a checkbox’s `checked` boolean. Use this method to get or set these properties.
+
+If a *value* is specified, sets the property with the specified *name* to the specified value on selected elements. If the *value* is a constant, then all elements are given the same property value; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to set each element’s property. A null value will delete the specified property.
+
+If a *value* is not specified, returns the value of the specified property for the first (non-null) element in the selection. This is generally useful only if you know the selection contains exactly one element.
+
+# selection .text ([value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/text.js)
+
+If a *value* is specified, sets the [text content](http://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-textContent) to the specified value on all selected elements, replacing any existing child elements. If the *value* is a constant, then all elements are given the same text content; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to set each element’s text content. A null value will clear the content.
+
+If a *value* is not specified, returns the text content for the first (non-null) element in the selection. This is generally useful only if you know the selection contains exactly one element.
+
+# selection .html ([value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/html.js)
+
+If a *value* is specified, sets the [inner HTML](http://dev.w3.org/html5/spec-LC/apis-in-html-documents.html#innerhtml) to the specified value on all selected elements, replacing any existing child elements. If the *value* is a constant, then all elements are given the same inner HTML; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function’s return value is then used to set each element’s inner HTML. A null value will clear the content.
+
+If a *value* is not specified, returns the inner HTML for the first (non-null) element in the selection. This is generally useful only if you know the selection contains exactly one element.
+
+Use [*selection*.append](#selection_append) or [*selection*.insert](#selection_insert) instead to create data-driven content; this method is intended for when you want a little bit of HTML, say for rich formatting. Also, *selection*.html is only supported on HTML elements. SVG elements and other non-HTML elements do not support the innerHTML property, and thus are incompatible with *selection*.html. Consider using [XMLSerializer](https://developer.mozilla.org/en-US/docs/XMLSerializer) to convert a DOM subtree to text. See also the [innersvg polyfill](https://code.google.com/p/innersvg/), which provides a shim to support the innerHTML property on SVG elements.
+
+# selection .append (type ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/append.js)
+
+If the specified *type* is a string, appends a new element of this type (tag name) as the last child of each selected element, or before the next following sibling in the update selection if this is an [enter selection](#selection_enter). The latter behavior for enter selections allows you to insert elements into the DOM in an order consistent with the new bound data; however, note that [*selection*.order](#selection_order) may still be required if updating elements change order (*i.e.*, if the order of new data is inconsistent with old data).
+
+If the specified *type* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). This function should return an element to be appended. (The function typically creates a new element, but it may instead return an existing element.) For example, to append a paragraph to each DIV element:
+
+```js
+d3.selectAll("div").append("p");
+```
+
+This is equivalent to:
+
+```js
+d3.selectAll("div").append(() => document.createElement("p"));
+```
+
+Which is equivalent to:
+
+```js
+d3.selectAll("div").select(function() {
+ return this.appendChild(document.createElement("p"));
+});
+```
+
+In both cases, this method returns a new selection containing the appended elements. Each new element inherits the data of the current elements, if any, in the same manner as [*selection*.select](#selection_select).
+
+The specified *name* may have a namespace prefix, such as `svg:text` to specify a `text` attribute in the SVG namespace. See [namespaces](#namespaces) for the map of supported namespaces; additional namespaces can be registered by adding to the map. If no namespace is specified, the namespace will be inherited from the parent element; or, if the name is one of the known prefixes, the corresponding namespace will be used (for example, `svg` implies `svg:svg`).
+
+# selection .insert (type [, before ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/insert.js)
+
+If the specified *type* is a string, inserts a new element of this type (tag name) before the first element matching the specified *before* selector for each selected element. For example, a *before* selector `:first-child` will prepend nodes before the first child. If *before* is not specified, it defaults to null. (To append elements in an order consistent with [bound data](#joining-data), use [*selection*.append](#selection_append).)
+
+Both *type* and *before* may instead be specified as functions which are evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The *type* function should return an element to be inserted; the *before* function should return the child element before which the element should be inserted. For example, to append a paragraph to each DIV element:
+
+```js
+d3.selectAll("div").insert("p");
+```
+
+This is equivalent to:
+
+```js
+d3.selectAll("div").insert(() => document.createElement("p"));
+```
+
+Which is equivalent to:
+
+```js
+d3.selectAll("div").select(function() {
+ return this.insertBefore(document.createElement("p"), null);
+});
+```
+
+In both cases, this method returns a new selection containing the appended elements. Each new element inherits the data of the current elements, if any, in the same manner as [*selection*.select](#selection_select).
+
+The specified *name* may have a namespace prefix, such as `svg:text` to specify a `text` attribute in the SVG namespace. See [namespaces](#namespaces) for the map of supported namespaces; additional namespaces can be registered by adding to the map. If no namespace is specified, the namespace will be inherited from the parent element; or, if the name is one of the known prefixes, the corresponding namespace will be used (for example, `svg` implies `svg:svg`).
+
+# selection .remove () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/remove.js)
+
+Removes the selected elements from the document. Returns this selection (the removed elements) which are now detached from the DOM. There is not currently a dedicated API to add removed elements back to the document; however, you can pass a function to [*selection*.append](#selection_append) or [*selection*.insert](#selection_insert) to re-add elements.
+
+# selection .clone ([deep ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/clone.js)
+
+Inserts clones of the selected elements immediately following the selected elements and returns a selection of the newly added clones. If *deep* is truthy, the descendant nodes of the selected elements will be cloned as well. Otherwise, only the elements themselves will be cloned. Equivalent to:
+
+```js
+selection.select(function() {
+ return this.parentNode.insertBefore(this.cloneNode(deep), this.nextSibling);
+});
+```
+
+# selection .sort (compare ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/sort.js)
+
+Returns a new selection that contains a copy of each group in this selection sorted according to the *compare* function. After sorting, re-inserts elements to match the resulting order (per [*selection*.order](#selection_order)).
+
+The compare function, which defaults to [ascending](https://github.com/d3/d3-array#ascending), is passed two elements’ data *a* and *b* to compare. It should return either a negative, positive, or zero value. If negative, then *a* should be before *b*; if positive, then *a* should be after *b*; otherwise, *a* and *b* are considered equal and the order is arbitrary.
+
+Note that sorting is not guaranteed to be stable; however, it is guaranteed to have the same behavior as your browser’s built-in [sort](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort) method on arrays.
+
+# selection .order () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/order.js)
+
+Re-inserts elements into the document such that the document order of each group matches the selection order. This is equivalent to calling [*selection*.sort](#selection_sort) if the data is already sorted, but much faster.
+
+# selection .raise () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/raise.js)
+
+Re-inserts each selected element, in order, as the last child of its parent. Equivalent to:
+
+```js
+selection.each(function() {
+ this.parentNode.appendChild(this);
+});
+```
+
+# selection .lower () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/lower.js)
+
+Re-inserts each selected element, in order, as the first child of its parent. Equivalent to:
+
+```js
+selection.each(function() {
+ this.parentNode.insertBefore(this, this.parentNode.firstChild);
+});
+```
+
+# d3.create (name ) · [Source](https://github.com/d3/d3-selection/blob/master/src/create.js)
+
+Given the specified element *name*, returns a single-element selection containing a detached element of the given name in the current document. This method assumes the HTML namespace, so you must specify a namespace explicitly when creating SVG or other non-HTML elements; see [namespace](#namespace) for details on supported namespace prefixes.
+
+```js
+d3.create("svg") // equivalent to svg:svg
+d3.create("svg:svg") // more explicitly
+d3.create("svg:g") // an SVG G element
+d3.create("g") // an HTML G (unknown) element
+```
+
+# d3.creator (name ) · [Source](https://github.com/d3/d3-selection/blob/master/src/creator.js)
+
+Given the specified element *name*, returns a function which creates an element of the given name, assuming that `this` is the parent element. This method is used internally by [*selection*.append](#selection_append) and [*selection*.insert](#selection_insert) to create new elements. For example, this:
+
+```js
+selection.append("div");
+```
+
+Is equivalent to:
+
+```js
+selection.append(d3.creator("div"));
+```
+
+See [namespace](#namespace) for details on supported namespace prefixes, such as for SVG elements.
+
+### Joining Data
+
+For an introduction to D3’s data joins, see the [*selection*.join notebook](https://observablehq.com/@d3/selection-join). Also see [Thinking With Joins](http://bost.ocks.org/mike/join/).
+
+# selection .data ([data [, key ]]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/data.js), [Examples](https://observablehq.com/@d3/brushable-scatterplot)
+
+Binds the specified array of *data* with the selected elements, returning a new selection that represents the *update* selection: the elements successfully bound to data. Also defines the [enter](#selection_enter) and [exit](#selection_exit) selections on the returned selection, which can be used to add or remove elements to correspond to the new data. The specified *data* is an array of arbitrary values (*e.g.*, numbers or objects), or a function that returns an array of values for each group. When data is assigned to an element, it is stored in the property `__data__`, thus making the data “sticky” and available on re-selection.
+
+The *data* is specified **for each group** in the selection. If the selection has multiple groups (such as [d3.selectAll](#selectAll) followed by [*selection*.selectAll](#selection_selectAll)), then *data* should typically be specified as a function. This function will be evaluated for each group in order, being passed the group’s parent datum (*d*, which may be undefined), the group index (*i*), and the selection’s parent nodes (*nodes*), with *this* as the group’s parent element.
+
+In conjunction with [*selection*.join](#selection_join) (or more explicitly with [*selection*.enter](#selection_enter), [*selection*.exit](#selection_exit), [*selection*.append](#selection_append) and [*selection*.remove](#selection_remove)), *selection*.data can be used to enter, update and exit elements to match data. For example, to create an HTML table from a matrix of numbers:
+
+```js
+const matrix = [
+ [11975, 5871, 8916, 2868],
+ [ 1951, 10048, 2060, 6171],
+ [ 8010, 16145, 8090, 8045],
+ [ 1013, 990, 940, 6907]
+];
+
+d3.select("body")
+ .append("table")
+ .selectAll("tr")
+ .data(matrix)
+ .join("tr")
+ .selectAll("td")
+ .data(d => d)
+ .join("td")
+ .text(d => d);
+```
+
+In this example the *data* function is the identity function: for each table row, it returns the corresponding row from the data matrix.
+
+If a *key* function is not specified, then the first datum in *data* is assigned to the first selected element, the second datum to the second selected element, and so on. A *key* function may be specified to control which datum is assigned to which element, replacing the default join-by-index, by computing a string identifier for each datum and element. This key function is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]); the returned string is the element’s key. The key function is then also evaluated for each new datum in *data*, being passed the current datum (*d*), the current index (*i*), and the group’s new *data*, with *this* as the group’s parent DOM element; the returned string is the datum’s key. The datum for a given key is assigned to the element with the matching key. If multiple elements have the same key, the duplicate elements are put into the exit selection; if multiple data have the same key, the duplicate data are put into the enter selection.
+
+For example, given this document:
+
+```html
+
+
+
+
+
+
+```
+
+You could join data by key as follows:
+
+
+```js
+const data = [
+ {name: "Locke", number: 4},
+ {name: "Reyes", number: 8},
+ {name: "Ford", number: 15},
+ {name: "Jarrah", number: 16},
+ {name: "Shephard", number: 23},
+ {name: "Kwon", number: 42}
+];
+
+d3.selectAll("div")
+ .data(data, function(d) { return d ? d.name : this.id; })
+ .text(d => d.number);
+```
+
+This example key function uses the datum *d* if present, and otherwise falls back to the element’s id property. Since these elements were not previously bound to data, the datum *d* is null when the key function is evaluated on selected elements, and non-null when the key function is evaluated on the new data.
+
+The *update* and *enter* selections are returned in data order, while the *exit* selection preserves the selection order prior to the join. If a key function is specified, the order of elements in the selection may not match their order in the document; use [*selection*.order](#selection_order) or [*selection*.sort](#selection_sort) as needed. For more on how the key function affects the join, see [A Bar Chart, Part 2](http://bost.ocks.org/mike/bar/2/) and [Object Constancy](http://bost.ocks.org/mike/constancy/).
+
+If *data* is not specified, this method returns the array of data for the selected elements.
+
+This method cannot be used to clear bound data; use [*selection*.datum](#selection_datum) instead.
+
+# selection .join (enter [, update ][, exit ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/join.js)
+
+Appends, removes and reorders elements as necessary to match the data that was previously bound by [*selection*.data](#selection_data), returning the [merged](#selection_merge) enter and update selection. This method is a convenient alternative to the explicit [general update pattern](https://bl.ocks.org/mbostock/3808218), replacing [*selection*.enter](#selection_enter), [*selection*.exit](#selection_exit), [*selection*.append](#selection_append), [*selection*.remove](#selection_remove), and [*selection*.order](#selection_order). For example:
+
+```js
+svg.selectAll("circle")
+ .data(data)
+ .join("circle")
+ .attr("fill", "none")
+ .attr("stroke", "black");
+```
+
+The *enter* function may be specified as a string shorthand, as above, which is equivalent to [*selection*.append](#selection_append) with the given element name. Likewise, optional *update* and *exit* functions may be specified, which default to the identity function and calling [*selection*.remove](#selection_remove), respectively. The shorthand above is thus equivalent to:
+
+```js
+svg.selectAll("circle")
+ .data(data)
+ .join(
+ enter => enter.append("circle"),
+ update => update,
+ exit => exit.remove()
+ )
+ .attr("fill", "none")
+ .attr("stroke", "black");
+````
+
+By passing separate functions on enter, update and exit, you have greater control over what happens. And by specifying a key function to [*selection*.data](#selection_data), you can minimize changes to the DOM to optimize performance. For example, to set different fill colors for enter and update:
+
+```js
+svg.selectAll("circle")
+ .data(data)
+ .join(
+ enter => enter.append("circle").attr("fill", "green"),
+ update => update.attr("fill", "blue")
+ )
+ .attr("stroke", "black");
+```
+
+The selections returned by the *enter* and *update* functions are merged and then returned by *selection*.join.
+
+You can animate enter, update and exit by creating transitions inside the *enter*, *update* and *exit* functions. If the *enter* and *update* functions return transitions, their underlying selections are merged and then returned by *selection*.join. The return value of the *exit* function is not used.
+
+For more, see the [*selection*.join notebook](https://observablehq.com/@d3/selection-join).
+
+# selection .enter () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/enter.js)
+
+Returns the enter selection: placeholder nodes for each datum that had no corresponding DOM element in the selection. (The enter selection is empty for selections not returned by [*selection*.data](#selection_data).)
+
+The enter selection is typically used to create “missing” elements corresponding to new data. For example, to create DIV elements from an array of numbers:
+
+```js
+const div = d3.select("body")
+ .selectAll("div")
+ .data([4, 8, 15, 16, 23, 42])
+ .enter().append("div")
+ .text(d => d);
+```
+
+If the body is initially empty, the above code will create six new DIV elements, append them to the body in-order, and assign their text content as the associated (string-coerced) number:
+
+```html
+4
+8
+15
+16
+23
+42
+```
+
+Conceptually, the enter selection’s placeholders are pointers to the parent element (in this example, the document body). The enter selection is typically only used transiently to append elements, and is often [merged](#selection_merge) with the update selection after appending, such that modifications can be applied to both entering and updating elements.
+
+# selection .exit () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/exit.js)
+
+Returns the exit selection: existing DOM elements in the selection for which no new datum was found. (The exit selection is empty for selections not returned by [*selection*.data](#selection_data).)
+
+The exit selection is typically used to remove “superfluous” elements corresponding to old data. For example, to update the DIV elements created previously with a new array of numbers:
+
+```js
+div = div.data([1, 2, 4, 8, 16, 32], d => d);
+```
+
+Since a key function was specified (as the identity function), and the new data contains the numbers [4, 8, 16] which match existing elements in the document, the update selection contains three DIV elements. Leaving those elements as-is, we can append new elements for [1, 2, 32] using the enter selection:
+
+```js
+div.enter().append("div").text(d => d);
+```
+
+Likewise, to remove the exiting elements [15, 23, 42]:
+
+```js
+div.exit().remove();
+```
+
+Now the document body looks like this:
+
+```html
+1
+2
+4
+8
+16
+32
+```
+
+The order of the DOM elements matches the order of the data because the old data’s order and the new data’s order were consistent. If the new data’s order is different, use [*selection*.order](#selection_order) to reorder the elements in the DOM. See the [General Update Pattern](http://bl.ocks.org/mbostock/3808218) example thread for more on data joins.
+
+# selection .datum ([value ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/datum.js)
+
+Gets or sets the bound data for each selected element. Unlike [*selection*.data](#selection_data), this method does not compute a join and does not affect indexes or the enter and exit selections.
+
+If a *value* is specified, sets the element’s bound data to the specified value on all selected elements. If the *value* is a constant, all elements are given the same datum; otherwise, if the *value* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). The function is then used to set each element’s new data. A null value will delete the bound data.
+
+If a *value* is not specified, returns the bound datum for the first (non-null) element in the selection. This is generally useful only if you know the selection contains exactly one element.
+
+This method is useful for accessing HTML5 [custom data attributes](http://www.w3.org/TR/html5/dom.html#custom-data-attribute). For example, given the following elements:
+
+```html
+
+ Shawn Allen
+ Mike Bostock
+
+```
+
+You can expose the custom data attributes by setting each element’s data as the built-in [dataset](http://www.w3.org/TR/html5/dom.html#dom-dataset) property:
+
+```js
+selection.datum(function() { return this.dataset; })
+```
+
+### Handling Events
+
+For interaction, selections allow listening for and dispatching of events.
+
+# selection .on (typenames [, listener [, options ]]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/on.js)
+
+Adds or removes a *listener* to each selected element for the specified event *typenames*. The *typenames* is a string event type, such as `click`, `mouseover`, or `submit`; any [DOM event type](https://developer.mozilla.org/en-US/docs/Web/Events#Standard_events) supported by your browser may be used. The type may be optionally followed by a period (`.`) and a name; the optional name allows multiple callbacks to be registered to receive events of the same type, such as `click.foo` and `click.bar`. To specify multiple typenames, separate typenames with spaces, such as `input change` or `click.foo click.bar`.
+
+When a specified event is dispatched on a selected element, the specified *listener* will be evaluated for the element, being passed the current event (*event*) and the current datum (*d*), with *this* as the current DOM element (*event*.currentTarget). Listeners always see the latest datum for their element. Note: while you can use [*event*.pageX](https://developer.mozilla.org/en/DOM/event.pageX) and [*event*.pageY](https://developer.mozilla.org/en/DOM/event.pageY) directly, it is often convenient to transform the event position to the local coordinate system of the element that received the event using [d3.pointer](#pointer).
+
+If an event listener was previously registered for the same *typename* on a selected element, the old listener is removed before the new listener is added. To remove a listener, pass null as the *listener*. To remove all listeners for a given name, pass null as the *listener* and `.foo` as the *typename*, where `foo` is the name; to remove all listeners with no name, specify `.` as the *typename*.
+
+An optional *options* object may specify characteristics about the event listener, such as whether it is capturing or passive; see [*element*.addEventListener](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener).
+
+If a *listener* is not specified, returns the currently-assigned listener for the specified event *typename* on the first (non-null) selected element, if any. If multiple typenames are specified, the first matching listener is returned.
+
+# selection .dispatch (type [, parameters ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/dispatch.js)
+
+Dispatches a [custom event](http://www.w3.org/TR/dom/#interface-customevent) of the specified *type* to each selected element, in order. An optional *parameters* map may be specified to set additional properties of the event. It may contain the following fields:
+
+* [`bubbles`](https://www.w3.org/TR/dom/#dom-event-bubbles) - if true, the event is dispatched to ancestors in reverse tree order.
+* [`cancelable`](https://www.w3.org/TR/dom/#dom-event-cancelable) - if true, *event*.preventDefault is allowed.
+* [`detail`](https://www.w3.org/TR/dom/#dom-customevent-detail) - any custom data associated with the event.
+
+If *parameters* is a function, it is evaluated for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). It must return the parameters map for the current element.
+
+# d3.pointer (event [, target ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/pointer.js)
+
+Returns a two-element array of numbers [*x*, *y*] representing the coordinates of the specified *event* relative to the specified *target*. *event* can be a [MouseEvent](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent), a [PointerEvent](https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent), a [Touch](https://www.w3.org/TR/touch-events/#touch-interface), or a custom event holding a UIEvent as *event*.sourceEvent.
+
+If *target* is not specified, it defaults to the source event’s currentTarget property, if available. If the *target* is an SVG element, the event’s coordinates are transformed using the [inverse](https://www.w3.org/TR/geometry-1/#dom-dommatrixreadonly-inverse) of the [screen coordinate transformation matrix](https://www.w3.org/TR/SVG/types.html#__svg__SVGGraphicsElement__getScreenCTM). If the *target* is an HTML element, the event’s coordinates are translated relative to the top-left corner of the *target*’s [bounding client rectangle](https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect). (As such, the coordinate system can only be translated relative to the client coordinates. See also [GeometryUtils](https://www.w3.org/TR/cssom-view-1/#the-geometryutils-interface).) Otherwise, [*event*.pageX, *event*.pageY] is returned.
+
+# d3.pointers (event [, target ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/pointers.js)
+
+Returns an array [[*x0*, *y0*], [*x1*, *y1*]…] of coordinates of the specified *event*’s pointer locations relative to the specified *target*. For touch events, the returned array of positions corresponds to the *event*.touches array; for other events, returns a single-element array.
+
+If *target* is not specified, it defaults to the source event’s currentTarget property, if any.
+
+### Control Flow
+
+For advanced usage, selections provide methods for custom control flow.
+
+# selection .each (function ) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/each.js)
+
+Invokes the specified *function* for each selected element, in order, being passed the current datum (*d*), the current index (*i*), and the current group (*nodes*), with *this* as the current DOM element (*nodes*[*i*]). This method can be used to invoke arbitrary code for each selected element, and is useful for creating a context to access parent and child data simultaneously, such as:
+
+```js
+parent.each(function(p, j) {
+ d3.select(this)
+ .selectAll(".child")
+ .text(d => `child ${d.name} of ${p.name}`);
+});
+```
+
+See [Sized Donut Multiples](http://bl.ocks.org/mbostock/4c5fad723c87d2fd8273) for an example.
+
+# selection .call (function [, arguments… ]) · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/call.js)
+
+Invokes the specified *function* exactly once, passing in this selection along with any optional *arguments*. Returns this selection. This is equivalent to invoking the function by hand but facilitates method chaining. For example, to set several styles in a reusable function:
+
+```js
+function name(selection, first, last) {
+ selection
+ .attr("first-name", first)
+ .attr("last-name", last);
+}
+```
+
+Now say:
+
+```js
+d3.selectAll("div").call(name, "John", "Snow");
+```
+
+This is roughly equivalent to:
+
+```js
+name(d3.selectAll("div"), "John", "Snow");
+```
+
+The only difference is that *selection*.call always returns the *selection* and not the return value of the called *function*, `name`.
+
+# selection .empty () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/empty.js)
+
+Returns true if this selection contains no (non-null) elements.
+
+# selection .nodes () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/nodes.js)
+
+Returns an array of all (non-null) elements in this selection. Equivalent to:
+
+```js
+const elements = Array.from(selection);
+````
+
+See also [*selection*[Symbol.iterator]](#selection_iterator).
+
+# selection .node () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/node.js)
+
+Returns the first (non-null) element in this selection. If the selection is empty, returns null.
+
+# selection .size () · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/size.js)
+
+Returns the total number of (non-null) elements in this selection.
+
+# selection \[Symbol.iterator \]() · [Source](https://github.com/d3/d3-selection/blob/master/src/selection/iterator.js)
+
+Returns an iterator over the selected (non-null) elements. For example, to iterate over the selected elements:
+
+```js
+for (const element of selection) {
+ console.log(element);
+}
+```
+
+To flatten the selection to an array:
+
+```js
+const elements = [...selection];
+````
+
+### Local Variables
+
+D3 locals allow you to define local state independent of data. For instance, when rendering [small multiples](http://bl.ocks.org/mbostock/e1192fe405703d8321a5187350910e08) of time-series data, you might want the same *x*-scale for all charts but distinct *y*-scales to compare the relative performance of each metric. D3 locals are scoped by DOM elements: on set, the value is stored on the given element; on get, the value is retrieved from given element or the nearest ancestor that defines it.
+
+# d3.local () · [Source](https://github.com/d3/d3-selection/blob/master/src/local.js)
+
+Declares a new local variable. For example:
+
+```js
+const foo = d3.local();
+```
+
+Like `var`, each local is a distinct symbolic reference; unlike `var`, the value of each local is also scoped by the DOM.
+
+# local .set (node , value ) · [Source](https://github.com/d3/d3-selection/blob/master/src/local.js)
+
+Sets the value of this local on the specified *node* to the *value*, and returns the specified *value*. This is often performed using [*selection*.each](#selection_each):
+
+```js
+selection.each(function(d) { foo.set(this, d.value); });
+```
+
+If you are just setting a single variable, consider using [*selection*.property](#selection_property):
+
+```js
+selection.property(foo, d => d.value);
+```
+
+# local .get (node ) · [Source](https://github.com/d3/d3-selection/blob/master/src/local.js)
+
+Returns the value of this local on the specified *node*. If the *node* does not define this local, returns the value from the nearest ancestor that defines it. Returns undefined if no ancestor defines this local.
+
+# local .remove (node ) · [Source](https://github.com/d3/d3-selection/blob/master/src/local.js)
+
+Deletes this local’s value from the specified *node*. Returns true if the *node* defined this local prior to removal, and false otherwise. If ancestors also define this local, those definitions are unaffected, and thus [*local*.get](#local_get) will still return the inherited value.
+
+# local .toString () · [Source](https://github.com/d3/d3-selection/blob/master/src/local.js)
+
+Returns the automatically-generated identifier for this local. This is the name of the property that is used to store the local’s value on elements, and thus you can also set or get the local’s value using *element*[*local*] or by using [*selection*.property](#selection_property).
+
+### Namespaces
+
+XML namespaces are fun! Right? Fortunately you can mostly ignore them.
+
+# d3.namespace (name ) · [Source](https://github.com/d3/d3-selection/blob/master/src/namespace.js)
+
+Qualifies the specified *name*, which may or may not have a namespace prefix. If the name contains a colon (`:`), the substring before the colon is interpreted as the namespace prefix, which must be registered in [d3.namespaces](#namespaces). Returns an object `space` and `local` attributes describing the full namespace URL and the local name. For example:
+
+```js
+d3.namespace("svg:text"); // {space: "http://www.w3.org/2000/svg", local: "text"}
+```
+
+If the name does not contain a colon, this function merely returns the input name.
+
+# d3.namespaces · [Source](https://github.com/d3/d3-selection/blob/master/src/namespaces.js)
+
+The map of registered namespace prefixes. The initial value is:
+
+```js
+{
+ svg: "http://www.w3.org/2000/svg",
+ xhtml: "http://www.w3.org/1999/xhtml",
+ xlink: "http://www.w3.org/1999/xlink",
+ xml: "http://www.w3.org/XML/1998/namespace",
+ xmlns: "http://www.w3.org/2000/xmlns/"
+}
+```
+
+Additional prefixes may be assigned as needed to create elements or attributes in other namespaces.
diff --git a/node_modules/d3-selection/dist/d3-selection.js b/node_modules/d3-selection/dist/d3-selection.js
new file mode 100644
index 00000000..9ffc1e84
--- /dev/null
+++ b/node_modules/d3-selection/dist/d3-selection.js
@@ -0,0 +1,1022 @@
+// https://d3js.org/d3-selection/ v3.0.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+var xhtml = "http://www.w3.org/1999/xhtml";
+
+var namespaces = {
+ svg: "http://www.w3.org/2000/svg",
+ xhtml: xhtml,
+ xlink: "http://www.w3.org/1999/xlink",
+ xml: "http://www.w3.org/XML/1998/namespace",
+ xmlns: "http://www.w3.org/2000/xmlns/"
+};
+
+function namespace(name) {
+ var prefix = name += "", i = prefix.indexOf(":");
+ if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+ return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins
+}
+
+function creatorInherit(name) {
+ return function() {
+ var document = this.ownerDocument,
+ uri = this.namespaceURI;
+ return uri === xhtml && document.documentElement.namespaceURI === xhtml
+ ? document.createElement(name)
+ : document.createElementNS(uri, name);
+ };
+}
+
+function creatorFixed(fullname) {
+ return function() {
+ return this.ownerDocument.createElementNS(fullname.space, fullname.local);
+ };
+}
+
+function creator(name) {
+ var fullname = namespace(name);
+ return (fullname.local
+ ? creatorFixed
+ : creatorInherit)(fullname);
+}
+
+function none() {}
+
+function selector(selector) {
+ return selector == null ? none : function() {
+ return this.querySelector(selector);
+ };
+}
+
+function selection_select(select) {
+ if (typeof select !== "function") select = selector(select);
+
+ for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {
+ if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
+ if ("__data__" in node) subnode.__data__ = node.__data__;
+ subgroup[i] = subnode;
+ }
+ }
+ }
+
+ return new Selection(subgroups, this._parents);
+}
+
+// Given something array like (or null), returns something that is strictly an
+// array. This is used to ensure that array-like objects passed to d3.selectAll
+// or selection.selectAll are converted into proper arrays when creating a
+// selection; we don’t ever want to create a selection backed by a live
+// HTMLCollection or NodeList. However, note that selection.selectAll will use a
+// static NodeList as a group, since it safely derived from querySelectorAll.
+function array(x) {
+ return x == null ? [] : Array.isArray(x) ? x : Array.from(x);
+}
+
+function empty() {
+ return [];
+}
+
+function selectorAll(selector) {
+ return selector == null ? empty : function() {
+ return this.querySelectorAll(selector);
+ };
+}
+
+function arrayAll(select) {
+ return function() {
+ return array(select.apply(this, arguments));
+ };
+}
+
+function selection_selectAll(select) {
+ if (typeof select === "function") select = arrayAll(select);
+ else select = selectorAll(select);
+
+ for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+ if (node = group[i]) {
+ subgroups.push(select.call(node, node.__data__, i, group));
+ parents.push(node);
+ }
+ }
+ }
+
+ return new Selection(subgroups, parents);
+}
+
+function matcher(selector) {
+ return function() {
+ return this.matches(selector);
+ };
+}
+
+function childMatcher(selector) {
+ return function(node) {
+ return node.matches(selector);
+ };
+}
+
+var find = Array.prototype.find;
+
+function childFind(match) {
+ return function() {
+ return find.call(this.children, match);
+ };
+}
+
+function childFirst() {
+ return this.firstElementChild;
+}
+
+function selection_selectChild(match) {
+ return this.select(match == null ? childFirst
+ : childFind(typeof match === "function" ? match : childMatcher(match)));
+}
+
+var filter = Array.prototype.filter;
+
+function children() {
+ return Array.from(this.children);
+}
+
+function childrenFilter(match) {
+ return function() {
+ return filter.call(this.children, match);
+ };
+}
+
+function selection_selectChildren(match) {
+ return this.selectAll(match == null ? children
+ : childrenFilter(typeof match === "function" ? match : childMatcher(match)));
+}
+
+function selection_filter(match) {
+ if (typeof match !== "function") match = matcher(match);
+
+ for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {
+ if ((node = group[i]) && match.call(node, node.__data__, i, group)) {
+ subgroup.push(node);
+ }
+ }
+ }
+
+ return new Selection(subgroups, this._parents);
+}
+
+function sparse(update) {
+ return new Array(update.length);
+}
+
+function selection_enter() {
+ return new Selection(this._enter || this._groups.map(sparse), this._parents);
+}
+
+function EnterNode(parent, datum) {
+ this.ownerDocument = parent.ownerDocument;
+ this.namespaceURI = parent.namespaceURI;
+ this._next = null;
+ this._parent = parent;
+ this.__data__ = datum;
+}
+
+EnterNode.prototype = {
+ constructor: EnterNode,
+ appendChild: function(child) { return this._parent.insertBefore(child, this._next); },
+ insertBefore: function(child, next) { return this._parent.insertBefore(child, next); },
+ querySelector: function(selector) { return this._parent.querySelector(selector); },
+ querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); }
+};
+
+function constant(x) {
+ return function() {
+ return x;
+ };
+}
+
+function bindIndex(parent, group, enter, update, exit, data) {
+ var i = 0,
+ node,
+ groupLength = group.length,
+ dataLength = data.length;
+
+ // Put any non-null nodes that fit into update.
+ // Put any null nodes into enter.
+ // Put any remaining data into enter.
+ for (; i < dataLength; ++i) {
+ if (node = group[i]) {
+ node.__data__ = data[i];
+ update[i] = node;
+ } else {
+ enter[i] = new EnterNode(parent, data[i]);
+ }
+ }
+
+ // Put any non-null nodes that don’t fit into exit.
+ for (; i < groupLength; ++i) {
+ if (node = group[i]) {
+ exit[i] = node;
+ }
+ }
+}
+
+function bindKey(parent, group, enter, update, exit, data, key) {
+ var i,
+ node,
+ nodeByKeyValue = new Map,
+ groupLength = group.length,
+ dataLength = data.length,
+ keyValues = new Array(groupLength),
+ keyValue;
+
+ // Compute the key for each node.
+ // If multiple nodes have the same key, the duplicates are added to exit.
+ for (i = 0; i < groupLength; ++i) {
+ if (node = group[i]) {
+ keyValues[i] = keyValue = key.call(node, node.__data__, i, group) + "";
+ if (nodeByKeyValue.has(keyValue)) {
+ exit[i] = node;
+ } else {
+ nodeByKeyValue.set(keyValue, node);
+ }
+ }
+ }
+
+ // Compute the key for each datum.
+ // If there a node associated with this key, join and add it to update.
+ // If there is not (or the key is a duplicate), add it to enter.
+ for (i = 0; i < dataLength; ++i) {
+ keyValue = key.call(parent, data[i], i, data) + "";
+ if (node = nodeByKeyValue.get(keyValue)) {
+ update[i] = node;
+ node.__data__ = data[i];
+ nodeByKeyValue.delete(keyValue);
+ } else {
+ enter[i] = new EnterNode(parent, data[i]);
+ }
+ }
+
+ // Add any remaining nodes that were not bound to data to exit.
+ for (i = 0; i < groupLength; ++i) {
+ if ((node = group[i]) && (nodeByKeyValue.get(keyValues[i]) === node)) {
+ exit[i] = node;
+ }
+ }
+}
+
+function datum(node) {
+ return node.__data__;
+}
+
+function selection_data(value, key) {
+ if (!arguments.length) return Array.from(this, datum);
+
+ var bind = key ? bindKey : bindIndex,
+ parents = this._parents,
+ groups = this._groups;
+
+ if (typeof value !== "function") value = constant(value);
+
+ for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
+ var parent = parents[j],
+ group = groups[j],
+ groupLength = group.length,
+ data = arraylike(value.call(parent, parent && parent.__data__, j, parents)),
+ dataLength = data.length,
+ enterGroup = enter[j] = new Array(dataLength),
+ updateGroup = update[j] = new Array(dataLength),
+ exitGroup = exit[j] = new Array(groupLength);
+
+ bind(parent, group, enterGroup, updateGroup, exitGroup, data, key);
+
+ // Now connect the enter nodes to their following update node, such that
+ // appendChild can insert the materialized enter node before this node,
+ // rather than at the end of the parent node.
+ for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) {
+ if (previous = enterGroup[i0]) {
+ if (i0 >= i1) i1 = i0 + 1;
+ while (!(next = updateGroup[i1]) && ++i1 < dataLength);
+ previous._next = next || null;
+ }
+ }
+ }
+
+ update = new Selection(update, parents);
+ update._enter = enter;
+ update._exit = exit;
+ return update;
+}
+
+// Given some data, this returns an array-like view of it: an object that
+// exposes a length property and allows numeric indexing. Note that unlike
+// selectAll, this isn’t worried about “live” collections because the resulting
+// array will only be used briefly while data is being bound. (It is possible to
+// cause the data to change while iterating by using a key function, but please
+// don’t; we’d rather avoid a gratuitous copy.)
+function arraylike(data) {
+ return typeof data === "object" && "length" in data
+ ? data // Array, TypedArray, NodeList, array-like
+ : Array.from(data); // Map, Set, iterable, string, or anything else
+}
+
+function selection_exit() {
+ return new Selection(this._exit || this._groups.map(sparse), this._parents);
+}
+
+function selection_join(onenter, onupdate, onexit) {
+ var enter = this.enter(), update = this, exit = this.exit();
+ if (typeof onenter === "function") {
+ enter = onenter(enter);
+ if (enter) enter = enter.selection();
+ } else {
+ enter = enter.append(onenter + "");
+ }
+ if (onupdate != null) {
+ update = onupdate(update);
+ if (update) update = update.selection();
+ }
+ if (onexit == null) exit.remove(); else onexit(exit);
+ return enter && update ? enter.merge(update).order() : update;
+}
+
+function selection_merge(context) {
+ var selection = context.selection ? context.selection() : context;
+
+ for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
+ for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
+ if (node = group0[i] || group1[i]) {
+ merge[i] = node;
+ }
+ }
+ }
+
+ for (; j < m0; ++j) {
+ merges[j] = groups0[j];
+ }
+
+ return new Selection(merges, this._parents);
+}
+
+function selection_order() {
+
+ for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) {
+ for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
+ if (node = group[i]) {
+ if (next && node.compareDocumentPosition(next) ^ 4) next.parentNode.insertBefore(node, next);
+ next = node;
+ }
+ }
+ }
+
+ return this;
+}
+
+function selection_sort(compare) {
+ if (!compare) compare = ascending;
+
+ function compareNode(a, b) {
+ return a && b ? compare(a.__data__, b.__data__) : !a - !b;
+ }
+
+ for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) {
+ if (node = group[i]) {
+ sortgroup[i] = node;
+ }
+ }
+ sortgroup.sort(compareNode);
+ }
+
+ return new Selection(sortgroups, this._parents).order();
+}
+
+function ascending(a, b) {
+ return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+}
+
+function selection_call() {
+ var callback = arguments[0];
+ arguments[0] = this;
+ callback.apply(null, arguments);
+ return this;
+}
+
+function selection_nodes() {
+ return Array.from(this);
+}
+
+function selection_node() {
+
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length; i < n; ++i) {
+ var node = group[i];
+ if (node) return node;
+ }
+ }
+
+ return null;
+}
+
+function selection_size() {
+ let size = 0;
+ for (const node of this) ++size; // eslint-disable-line no-unused-vars
+ return size;
+}
+
+function selection_empty() {
+ return !this.node();
+}
+
+function selection_each(callback) {
+
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {
+ if (node = group[i]) callback.call(node, node.__data__, i, group);
+ }
+ }
+
+ return this;
+}
+
+function attrRemove(name) {
+ return function() {
+ this.removeAttribute(name);
+ };
+}
+
+function attrRemoveNS(fullname) {
+ return function() {
+ this.removeAttributeNS(fullname.space, fullname.local);
+ };
+}
+
+function attrConstant(name, value) {
+ return function() {
+ this.setAttribute(name, value);
+ };
+}
+
+function attrConstantNS(fullname, value) {
+ return function() {
+ this.setAttributeNS(fullname.space, fullname.local, value);
+ };
+}
+
+function attrFunction(name, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.removeAttribute(name);
+ else this.setAttribute(name, v);
+ };
+}
+
+function attrFunctionNS(fullname, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.removeAttributeNS(fullname.space, fullname.local);
+ else this.setAttributeNS(fullname.space, fullname.local, v);
+ };
+}
+
+function selection_attr(name, value) {
+ var fullname = namespace(name);
+
+ if (arguments.length < 2) {
+ var node = this.node();
+ return fullname.local
+ ? node.getAttributeNS(fullname.space, fullname.local)
+ : node.getAttribute(fullname);
+ }
+
+ return this.each((value == null
+ ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function"
+ ? (fullname.local ? attrFunctionNS : attrFunction)
+ : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value));
+}
+
+function defaultView(node) {
+ return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node
+ || (node.document && node) // node is a Window
+ || node.defaultView; // node is a Document
+}
+
+function styleRemove(name) {
+ return function() {
+ this.style.removeProperty(name);
+ };
+}
+
+function styleConstant(name, value, priority) {
+ return function() {
+ this.style.setProperty(name, value, priority);
+ };
+}
+
+function styleFunction(name, value, priority) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.style.removeProperty(name);
+ else this.style.setProperty(name, v, priority);
+ };
+}
+
+function selection_style(name, value, priority) {
+ return arguments.length > 1
+ ? this.each((value == null
+ ? styleRemove : typeof value === "function"
+ ? styleFunction
+ : styleConstant)(name, value, priority == null ? "" : priority))
+ : styleValue(this.node(), name);
+}
+
+function styleValue(node, name) {
+ return node.style.getPropertyValue(name)
+ || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);
+}
+
+function propertyRemove(name) {
+ return function() {
+ delete this[name];
+ };
+}
+
+function propertyConstant(name, value) {
+ return function() {
+ this[name] = value;
+ };
+}
+
+function propertyFunction(name, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) delete this[name];
+ else this[name] = v;
+ };
+}
+
+function selection_property(name, value) {
+ return arguments.length > 1
+ ? this.each((value == null
+ ? propertyRemove : typeof value === "function"
+ ? propertyFunction
+ : propertyConstant)(name, value))
+ : this.node()[name];
+}
+
+function classArray(string) {
+ return string.trim().split(/^|\s+/);
+}
+
+function classList(node) {
+ return node.classList || new ClassList(node);
+}
+
+function ClassList(node) {
+ this._node = node;
+ this._names = classArray(node.getAttribute("class") || "");
+}
+
+ClassList.prototype = {
+ add: function(name) {
+ var i = this._names.indexOf(name);
+ if (i < 0) {
+ this._names.push(name);
+ this._node.setAttribute("class", this._names.join(" "));
+ }
+ },
+ remove: function(name) {
+ var i = this._names.indexOf(name);
+ if (i >= 0) {
+ this._names.splice(i, 1);
+ this._node.setAttribute("class", this._names.join(" "));
+ }
+ },
+ contains: function(name) {
+ return this._names.indexOf(name) >= 0;
+ }
+};
+
+function classedAdd(node, names) {
+ var list = classList(node), i = -1, n = names.length;
+ while (++i < n) list.add(names[i]);
+}
+
+function classedRemove(node, names) {
+ var list = classList(node), i = -1, n = names.length;
+ while (++i < n) list.remove(names[i]);
+}
+
+function classedTrue(names) {
+ return function() {
+ classedAdd(this, names);
+ };
+}
+
+function classedFalse(names) {
+ return function() {
+ classedRemove(this, names);
+ };
+}
+
+function classedFunction(names, value) {
+ return function() {
+ (value.apply(this, arguments) ? classedAdd : classedRemove)(this, names);
+ };
+}
+
+function selection_classed(name, value) {
+ var names = classArray(name + "");
+
+ if (arguments.length < 2) {
+ var list = classList(this.node()), i = -1, n = names.length;
+ while (++i < n) if (!list.contains(names[i])) return false;
+ return true;
+ }
+
+ return this.each((typeof value === "function"
+ ? classedFunction : value
+ ? classedTrue
+ : classedFalse)(names, value));
+}
+
+function textRemove() {
+ this.textContent = "";
+}
+
+function textConstant(value) {
+ return function() {
+ this.textContent = value;
+ };
+}
+
+function textFunction(value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ this.textContent = v == null ? "" : v;
+ };
+}
+
+function selection_text(value) {
+ return arguments.length
+ ? this.each(value == null
+ ? textRemove : (typeof value === "function"
+ ? textFunction
+ : textConstant)(value))
+ : this.node().textContent;
+}
+
+function htmlRemove() {
+ this.innerHTML = "";
+}
+
+function htmlConstant(value) {
+ return function() {
+ this.innerHTML = value;
+ };
+}
+
+function htmlFunction(value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ this.innerHTML = v == null ? "" : v;
+ };
+}
+
+function selection_html(value) {
+ return arguments.length
+ ? this.each(value == null
+ ? htmlRemove : (typeof value === "function"
+ ? htmlFunction
+ : htmlConstant)(value))
+ : this.node().innerHTML;
+}
+
+function raise() {
+ if (this.nextSibling) this.parentNode.appendChild(this);
+}
+
+function selection_raise() {
+ return this.each(raise);
+}
+
+function lower() {
+ if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild);
+}
+
+function selection_lower() {
+ return this.each(lower);
+}
+
+function selection_append(name) {
+ var create = typeof name === "function" ? name : creator(name);
+ return this.select(function() {
+ return this.appendChild(create.apply(this, arguments));
+ });
+}
+
+function constantNull() {
+ return null;
+}
+
+function selection_insert(name, before) {
+ var create = typeof name === "function" ? name : creator(name),
+ select = before == null ? constantNull : typeof before === "function" ? before : selector(before);
+ return this.select(function() {
+ return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null);
+ });
+}
+
+function remove() {
+ var parent = this.parentNode;
+ if (parent) parent.removeChild(this);
+}
+
+function selection_remove() {
+ return this.each(remove);
+}
+
+function selection_cloneShallow() {
+ var clone = this.cloneNode(false), parent = this.parentNode;
+ return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
+}
+
+function selection_cloneDeep() {
+ var clone = this.cloneNode(true), parent = this.parentNode;
+ return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
+}
+
+function selection_clone(deep) {
+ return this.select(deep ? selection_cloneDeep : selection_cloneShallow);
+}
+
+function selection_datum(value) {
+ return arguments.length
+ ? this.property("__data__", value)
+ : this.node().__data__;
+}
+
+function contextListener(listener) {
+ return function(event) {
+ listener.call(this, event, this.__data__);
+ };
+}
+
+function parseTypenames(typenames) {
+ return typenames.trim().split(/^|\s+/).map(function(t) {
+ var name = "", i = t.indexOf(".");
+ if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+ return {type: t, name: name};
+ });
+}
+
+function onRemove(typename) {
+ return function() {
+ var on = this.__on;
+ if (!on) return;
+ for (var j = 0, i = -1, m = on.length, o; j < m; ++j) {
+ if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) {
+ this.removeEventListener(o.type, o.listener, o.options);
+ } else {
+ on[++i] = o;
+ }
+ }
+ if (++i) on.length = i;
+ else delete this.__on;
+ };
+}
+
+function onAdd(typename, value, options) {
+ return function() {
+ var on = this.__on, o, listener = contextListener(value);
+ if (on) for (var j = 0, m = on.length; j < m; ++j) {
+ if ((o = on[j]).type === typename.type && o.name === typename.name) {
+ this.removeEventListener(o.type, o.listener, o.options);
+ this.addEventListener(o.type, o.listener = listener, o.options = options);
+ o.value = value;
+ return;
+ }
+ }
+ this.addEventListener(typename.type, listener, options);
+ o = {type: typename.type, name: typename.name, value: value, listener: listener, options: options};
+ if (!on) this.__on = [o];
+ else on.push(o);
+ };
+}
+
+function selection_on(typename, value, options) {
+ var typenames = parseTypenames(typename + ""), i, n = typenames.length, t;
+
+ if (arguments.length < 2) {
+ var on = this.node().__on;
+ if (on) for (var j = 0, m = on.length, o; j < m; ++j) {
+ for (i = 0, o = on[j]; i < n; ++i) {
+ if ((t = typenames[i]).type === o.type && t.name === o.name) {
+ return o.value;
+ }
+ }
+ }
+ return;
+ }
+
+ on = value ? onAdd : onRemove;
+ for (i = 0; i < n; ++i) this.each(on(typenames[i], value, options));
+ return this;
+}
+
+function dispatchEvent(node, type, params) {
+ var window = defaultView(node),
+ event = window.CustomEvent;
+
+ if (typeof event === "function") {
+ event = new event(type, params);
+ } else {
+ event = window.document.createEvent("Event");
+ if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail;
+ else event.initEvent(type, false, false);
+ }
+
+ node.dispatchEvent(event);
+}
+
+function dispatchConstant(type, params) {
+ return function() {
+ return dispatchEvent(this, type, params);
+ };
+}
+
+function dispatchFunction(type, params) {
+ return function() {
+ return dispatchEvent(this, type, params.apply(this, arguments));
+ };
+}
+
+function selection_dispatch(type, params) {
+ return this.each((typeof params === "function"
+ ? dispatchFunction
+ : dispatchConstant)(type, params));
+}
+
+function* selection_iterator() {
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {
+ if (node = group[i]) yield node;
+ }
+ }
+}
+
+var root = [null];
+
+function Selection(groups, parents) {
+ this._groups = groups;
+ this._parents = parents;
+}
+
+function selection() {
+ return new Selection([[document.documentElement]], root);
+}
+
+function selection_selection() {
+ return this;
+}
+
+Selection.prototype = selection.prototype = {
+ constructor: Selection,
+ select: selection_select,
+ selectAll: selection_selectAll,
+ selectChild: selection_selectChild,
+ selectChildren: selection_selectChildren,
+ filter: selection_filter,
+ data: selection_data,
+ enter: selection_enter,
+ exit: selection_exit,
+ join: selection_join,
+ merge: selection_merge,
+ selection: selection_selection,
+ order: selection_order,
+ sort: selection_sort,
+ call: selection_call,
+ nodes: selection_nodes,
+ node: selection_node,
+ size: selection_size,
+ empty: selection_empty,
+ each: selection_each,
+ attr: selection_attr,
+ style: selection_style,
+ property: selection_property,
+ classed: selection_classed,
+ text: selection_text,
+ html: selection_html,
+ raise: selection_raise,
+ lower: selection_lower,
+ append: selection_append,
+ insert: selection_insert,
+ remove: selection_remove,
+ clone: selection_clone,
+ datum: selection_datum,
+ on: selection_on,
+ dispatch: selection_dispatch,
+ [Symbol.iterator]: selection_iterator
+};
+
+function select(selector) {
+ return typeof selector === "string"
+ ? new Selection([[document.querySelector(selector)]], [document.documentElement])
+ : new Selection([[selector]], root);
+}
+
+function create(name) {
+ return select(creator(name).call(document.documentElement));
+}
+
+var nextId = 0;
+
+function local() {
+ return new Local;
+}
+
+function Local() {
+ this._ = "@" + (++nextId).toString(36);
+}
+
+Local.prototype = local.prototype = {
+ constructor: Local,
+ get: function(node) {
+ var id = this._;
+ while (!(id in node)) if (!(node = node.parentNode)) return;
+ return node[id];
+ },
+ set: function(node, value) {
+ return node[this._] = value;
+ },
+ remove: function(node) {
+ return this._ in node && delete node[this._];
+ },
+ toString: function() {
+ return this._;
+ }
+};
+
+function sourceEvent(event) {
+ let sourceEvent;
+ while (sourceEvent = event.sourceEvent) event = sourceEvent;
+ return event;
+}
+
+function pointer(event, node) {
+ event = sourceEvent(event);
+ if (node === undefined) node = event.currentTarget;
+ if (node) {
+ var svg = node.ownerSVGElement || node;
+ if (svg.createSVGPoint) {
+ var point = svg.createSVGPoint();
+ point.x = event.clientX, point.y = event.clientY;
+ point = point.matrixTransform(node.getScreenCTM().inverse());
+ return [point.x, point.y];
+ }
+ if (node.getBoundingClientRect) {
+ var rect = node.getBoundingClientRect();
+ return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop];
+ }
+ }
+ return [event.pageX, event.pageY];
+}
+
+function pointers(events, node) {
+ if (events.target) { // i.e., instanceof Event, not TouchList or iterable
+ events = sourceEvent(events);
+ if (node === undefined) node = events.currentTarget;
+ events = events.touches || [events];
+ }
+ return Array.from(events, event => pointer(event, node));
+}
+
+function selectAll(selector) {
+ return typeof selector === "string"
+ ? new Selection([document.querySelectorAll(selector)], [document.documentElement])
+ : new Selection([array(selector)], root);
+}
+
+exports.create = create;
+exports.creator = creator;
+exports.local = local;
+exports.matcher = matcher;
+exports.namespace = namespace;
+exports.namespaces = namespaces;
+exports.pointer = pointer;
+exports.pointers = pointers;
+exports.select = select;
+exports.selectAll = selectAll;
+exports.selection = selection;
+exports.selector = selector;
+exports.selectorAll = selectorAll;
+exports.style = styleValue;
+exports.window = defaultView;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-selection/dist/d3-selection.min.js b/node_modules/d3-selection/dist/d3-selection.min.js
new file mode 100644
index 00000000..37a57073
--- /dev/null
+++ b/node_modules/d3-selection/dist/d3-selection.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-selection/ v3.0.0 Copyright 2010-2021 Mike Bostock
+!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";var n="http://www.w3.org/1999/xhtml",e={svg:"http://www.w3.org/2000/svg",xhtml:n,xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};function r(t){var n=t+="",r=n.indexOf(":");return r>=0&&"xmlns"!==(n=t.slice(0,r))&&(t=t.slice(r+1)),e.hasOwnProperty(n)?{space:e[n],local:t}:t}function i(t){return function(){var e=this.ownerDocument,r=this.namespaceURI;return r===n&&e.documentElement.namespaceURI===n?e.createElement(t):e.createElementNS(r,t)}}function o(t){return function(){return this.ownerDocument.createElementNS(t.space,t.local)}}function u(t){var n=r(t);return(n.local?o:i)(n)}function s(){}function c(t){return null==t?s:function(){return this.querySelector(t)}}function l(t){return null==t?[]:Array.isArray(t)?t:Array.from(t)}function a(){return[]}function f(t){return null==t?a:function(){return this.querySelectorAll(t)}}function h(t){return function(){return this.matches(t)}}function p(t){return function(n){return n.matches(t)}}var _=Array.prototype.find;function d(){return this.firstElementChild}var y=Array.prototype.filter;function m(){return Array.from(this.children)}function v(t){return new Array(t.length)}function g(t,n){this.ownerDocument=t.ownerDocument,this.namespaceURI=t.namespaceURI,this._next=null,this._parent=t,this.__data__=n}function w(t){return function(){return t}}function A(t,n,e,r,i,o){for(var u,s=0,c=n.length,l=o.length;sn?1:t>=n?0:NaN}function N(t){return function(){this.removeAttribute(t)}}function C(t){return function(){this.removeAttributeNS(t.space,t.local)}}function L(t,n){return function(){this.setAttribute(t,n)}}function P(t,n){return function(){this.setAttributeNS(t.space,t.local,n)}}function T(t,n){return function(){var e=n.apply(this,arguments);null==e?this.removeAttribute(t):this.setAttribute(t,e)}}function B(t,n){return function(){var e=n.apply(this,arguments);null==e?this.removeAttributeNS(t.space,t.local):this.setAttributeNS(t.space,t.local,e)}}function M(t){return t.ownerDocument&&t.ownerDocument.defaultView||t.document&&t||t.defaultView}function q(t){return function(){this.style.removeProperty(t)}}function D(t,n,e){return function(){this.style.setProperty(t,n,e)}}function O(t,n,e){return function(){var r=n.apply(this,arguments);null==r?this.style.removeProperty(t):this.style.setProperty(t,r,e)}}function V(t,n){return t.style.getPropertyValue(n)||M(t).getComputedStyle(t,null).getPropertyValue(n)}function j(t){return function(){delete this[t]}}function R(t,n){return function(){this[t]=n}}function H(t,n){return function(){var e=n.apply(this,arguments);null==e?delete this[t]:this[t]=e}}function I(t){return t.trim().split(/^|\s+/)}function U(t){return t.classList||new X(t)}function X(t){this._node=t,this._names=I(t.getAttribute("class")||"")}function G(t,n){for(var e=U(t),r=-1,i=n.length;++r=0&&(n=t.slice(e+1),t=t.slice(0,e)),{type:t,name:n}}))}function st(t){return function(){var n=this.__on;if(n){for(var e,r=0,i=-1,o=n.length;r=0&&(this._names.splice(n,1),this._node.setAttribute("class",this._names.join(" ")))},contains:function(t){return this._names.indexOf(t)>=0}};var ht=[null];function pt(t,n){this._groups=t,this._parents=n}function _t(){return new pt([[document.documentElement]],ht)}function dt(t){return"string"==typeof t?new pt([[document.querySelector(t)]],[document.documentElement]):new pt([[t]],ht)}pt.prototype=_t.prototype={constructor:pt,select:function(t){"function"!=typeof t&&(t=c(t));for(var n=this._groups,e=n.length,r=new Array(e),i=0;i=N&&(N=E+1);!(g=y[N])&&++N<_;);v._next=g||null}}return(u=new pt(u,r))._enter=s,u._exit=c,u},enter:function(){return new pt(this._enter||this._groups.map(v),this._parents)},exit:function(){return new pt(this._exit||this._groups.map(v),this._parents)},join:function(t,n,e){var r=this.enter(),i=this,o=this.exit();return"function"==typeof t?(r=t(r))&&(r=r.selection()):r=r.append(t+""),null!=n&&(i=n(i))&&(i=i.selection()),null==e?o.remove():e(o),r&&i?r.merge(i).order():i},merge:function(t){for(var n=t.selection?t.selection():t,e=this._groups,r=n._groups,i=e.length,o=r.length,u=Math.min(i,o),s=new Array(i),c=0;c=0;)(r=i[o])&&(u&&4^r.compareDocumentPosition(u)&&u.parentNode.insertBefore(r,u),u=r);return this},sort:function(t){function n(n,e){return n&&e?t(n.__data__,e.__data__):!n-!e}t||(t=E);for(var e=this._groups,r=e.length,i=new Array(r),o=0;o1?this.each((null==n?q:"function"==typeof n?O:D)(t,n,null==e?"":e)):V(this.node(),t)},property:function(t,n){return arguments.length>1?this.each((null==n?j:"function"==typeof n?H:R)(t,n)):this.node()[t]},classed:function(t,n){var e=I(t+"");if(arguments.length<2){for(var r=U(this.node()),i=-1,o=e.length;++iwt(t,n)))},t.select=dt,t.selectAll=function(t){return"string"==typeof t?new pt([document.querySelectorAll(t)],[document.documentElement]):new pt([l(t)],ht)},t.selection=_t,t.selector=c,t.selectorAll=f,t.style=V,t.window=M,Object.defineProperty(t,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-selection/package.json b/node_modules/d3-selection/package.json
new file mode 100644
index 00000000..bb8d4431
--- /dev/null
+++ b/node_modules/d3-selection/package.json
@@ -0,0 +1,82 @@
+{
+ "_from": "d3-selection@3",
+ "_id": "d3-selection@3.0.0",
+ "_inBundle": false,
+ "_integrity": "sha512-fmTRWbNMmsmWq6xJV8D19U/gw/bwrHfNXxrIN+HfZgnzqTHp9jOmKMhsTUjXOJnZOdZY9Q28y4yebKzqDKlxlQ==",
+ "_location": "/d3-selection",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-selection@3",
+ "name": "d3-selection",
+ "escapedName": "d3-selection",
+ "rawSpec": "3",
+ "saveSpec": null,
+ "fetchSpec": "3"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-brush",
+ "/d3-drag",
+ "/d3-zoom"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-selection/-/d3-selection-3.0.0.tgz",
+ "_shasum": "c25338207efa72cc5b9bd1458a1a41901f1e1b31",
+ "_spec": "d3-selection@3",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "https://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-selection/issues"
+ },
+ "bundleDependencies": false,
+ "deprecated": false,
+ "description": "Data-driven DOM manipulation: select elements and join them to data.",
+ "devDependencies": {
+ "eslint": "7",
+ "jsdom": "16",
+ "mocha": "9",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-selection.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-selection/",
+ "jsdelivr": "dist/d3-selection.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "dom",
+ "selection",
+ "data-join"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-selection",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-selection.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-selection.min.js",
+ "version": "3.0.0"
+}
diff --git a/node_modules/d3-selection/src/array.js b/node_modules/d3-selection/src/array.js
new file mode 100644
index 00000000..978c22a2
--- /dev/null
+++ b/node_modules/d3-selection/src/array.js
@@ -0,0 +1,9 @@
+// Given something array like (or null), returns something that is strictly an
+// array. This is used to ensure that array-like objects passed to d3.selectAll
+// or selection.selectAll are converted into proper arrays when creating a
+// selection; we don’t ever want to create a selection backed by a live
+// HTMLCollection or NodeList. However, note that selection.selectAll will use a
+// static NodeList as a group, since it safely derived from querySelectorAll.
+export default function array(x) {
+ return x == null ? [] : Array.isArray(x) ? x : Array.from(x);
+}
diff --git a/node_modules/d3-selection/src/constant.js b/node_modules/d3-selection/src/constant.js
new file mode 100644
index 00000000..b7d42e71
--- /dev/null
+++ b/node_modules/d3-selection/src/constant.js
@@ -0,0 +1,5 @@
+export default function(x) {
+ return function() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-selection/src/create.js b/node_modules/d3-selection/src/create.js
new file mode 100644
index 00000000..077a6a3d
--- /dev/null
+++ b/node_modules/d3-selection/src/create.js
@@ -0,0 +1,6 @@
+import creator from "./creator.js";
+import select from "./select.js";
+
+export default function(name) {
+ return select(creator(name).call(document.documentElement));
+}
diff --git a/node_modules/d3-selection/src/creator.js b/node_modules/d3-selection/src/creator.js
new file mode 100644
index 00000000..4f1b1621
--- /dev/null
+++ b/node_modules/d3-selection/src/creator.js
@@ -0,0 +1,25 @@
+import namespace from "./namespace.js";
+import {xhtml} from "./namespaces.js";
+
+function creatorInherit(name) {
+ return function() {
+ var document = this.ownerDocument,
+ uri = this.namespaceURI;
+ return uri === xhtml && document.documentElement.namespaceURI === xhtml
+ ? document.createElement(name)
+ : document.createElementNS(uri, name);
+ };
+}
+
+function creatorFixed(fullname) {
+ return function() {
+ return this.ownerDocument.createElementNS(fullname.space, fullname.local);
+ };
+}
+
+export default function(name) {
+ var fullname = namespace(name);
+ return (fullname.local
+ ? creatorFixed
+ : creatorInherit)(fullname);
+}
diff --git a/node_modules/d3-selection/src/identity.js b/node_modules/d3-selection/src/identity.js
new file mode 100644
index 00000000..b2f94b2e
--- /dev/null
+++ b/node_modules/d3-selection/src/identity.js
@@ -0,0 +1,3 @@
+export default function(x) {
+ return x;
+}
diff --git a/node_modules/d3-selection/src/index.js b/node_modules/d3-selection/src/index.js
new file mode 100644
index 00000000..dc51a3bd
--- /dev/null
+++ b/node_modules/d3-selection/src/index.js
@@ -0,0 +1,15 @@
+export {default as create} from "./create.js";
+export {default as creator} from "./creator.js";
+export {default as local} from "./local.js";
+export {default as matcher} from "./matcher.js";
+export {default as namespace} from "./namespace.js";
+export {default as namespaces} from "./namespaces.js";
+export {default as pointer} from "./pointer.js";
+export {default as pointers} from "./pointers.js";
+export {default as select} from "./select.js";
+export {default as selectAll} from "./selectAll.js";
+export {default as selection} from "./selection/index.js";
+export {default as selector} from "./selector.js";
+export {default as selectorAll} from "./selectorAll.js";
+export {styleValue as style} from "./selection/style.js";
+export {default as window} from "./window.js";
diff --git a/node_modules/d3-selection/src/local.js b/node_modules/d3-selection/src/local.js
new file mode 100644
index 00000000..ab4c20f9
--- /dev/null
+++ b/node_modules/d3-selection/src/local.js
@@ -0,0 +1,27 @@
+var nextId = 0;
+
+export default function local() {
+ return new Local;
+}
+
+function Local() {
+ this._ = "@" + (++nextId).toString(36);
+}
+
+Local.prototype = local.prototype = {
+ constructor: Local,
+ get: function(node) {
+ var id = this._;
+ while (!(id in node)) if (!(node = node.parentNode)) return;
+ return node[id];
+ },
+ set: function(node, value) {
+ return node[this._] = value;
+ },
+ remove: function(node) {
+ return this._ in node && delete node[this._];
+ },
+ toString: function() {
+ return this._;
+ }
+};
diff --git a/node_modules/d3-selection/src/matcher.js b/node_modules/d3-selection/src/matcher.js
new file mode 100644
index 00000000..854b0d92
--- /dev/null
+++ b/node_modules/d3-selection/src/matcher.js
@@ -0,0 +1,12 @@
+export default function(selector) {
+ return function() {
+ return this.matches(selector);
+ };
+}
+
+export function childMatcher(selector) {
+ return function(node) {
+ return node.matches(selector);
+ };
+}
+
diff --git a/node_modules/d3-selection/src/namespace.js b/node_modules/d3-selection/src/namespace.js
new file mode 100644
index 00000000..72db9df5
--- /dev/null
+++ b/node_modules/d3-selection/src/namespace.js
@@ -0,0 +1,7 @@
+import namespaces from "./namespaces.js";
+
+export default function(name) {
+ var prefix = name += "", i = prefix.indexOf(":");
+ if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+ return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins
+}
diff --git a/node_modules/d3-selection/src/namespaces.js b/node_modules/d3-selection/src/namespaces.js
new file mode 100644
index 00000000..01749bdc
--- /dev/null
+++ b/node_modules/d3-selection/src/namespaces.js
@@ -0,0 +1,9 @@
+export var xhtml = "http://www.w3.org/1999/xhtml";
+
+export default {
+ svg: "http://www.w3.org/2000/svg",
+ xhtml: xhtml,
+ xlink: "http://www.w3.org/1999/xlink",
+ xml: "http://www.w3.org/XML/1998/namespace",
+ xmlns: "http://www.w3.org/2000/xmlns/"
+};
diff --git a/node_modules/d3-selection/src/pointer.js b/node_modules/d3-selection/src/pointer.js
new file mode 100644
index 00000000..3e2298f6
--- /dev/null
+++ b/node_modules/d3-selection/src/pointer.js
@@ -0,0 +1,20 @@
+import sourceEvent from "./sourceEvent.js";
+
+export default function(event, node) {
+ event = sourceEvent(event);
+ if (node === undefined) node = event.currentTarget;
+ if (node) {
+ var svg = node.ownerSVGElement || node;
+ if (svg.createSVGPoint) {
+ var point = svg.createSVGPoint();
+ point.x = event.clientX, point.y = event.clientY;
+ point = point.matrixTransform(node.getScreenCTM().inverse());
+ return [point.x, point.y];
+ }
+ if (node.getBoundingClientRect) {
+ var rect = node.getBoundingClientRect();
+ return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop];
+ }
+ }
+ return [event.pageX, event.pageY];
+}
diff --git a/node_modules/d3-selection/src/pointers.js b/node_modules/d3-selection/src/pointers.js
new file mode 100644
index 00000000..43d17d19
--- /dev/null
+++ b/node_modules/d3-selection/src/pointers.js
@@ -0,0 +1,11 @@
+import pointer from "./pointer.js";
+import sourceEvent from "./sourceEvent.js";
+
+export default function(events, node) {
+ if (events.target) { // i.e., instanceof Event, not TouchList or iterable
+ events = sourceEvent(events);
+ if (node === undefined) node = events.currentTarget;
+ events = events.touches || [events];
+ }
+ return Array.from(events, event => pointer(event, node));
+}
diff --git a/node_modules/d3-selection/src/select.js b/node_modules/d3-selection/src/select.js
new file mode 100644
index 00000000..dcea22e8
--- /dev/null
+++ b/node_modules/d3-selection/src/select.js
@@ -0,0 +1,7 @@
+import {Selection, root} from "./selection/index.js";
+
+export default function(selector) {
+ return typeof selector === "string"
+ ? new Selection([[document.querySelector(selector)]], [document.documentElement])
+ : new Selection([[selector]], root);
+}
diff --git a/node_modules/d3-selection/src/selectAll.js b/node_modules/d3-selection/src/selectAll.js
new file mode 100644
index 00000000..b6ecc3d2
--- /dev/null
+++ b/node_modules/d3-selection/src/selectAll.js
@@ -0,0 +1,8 @@
+import array from "./array.js";
+import {Selection, root} from "./selection/index.js";
+
+export default function(selector) {
+ return typeof selector === "string"
+ ? new Selection([document.querySelectorAll(selector)], [document.documentElement])
+ : new Selection([array(selector)], root);
+}
diff --git a/node_modules/d3-selection/src/selection/append.js b/node_modules/d3-selection/src/selection/append.js
new file mode 100644
index 00000000..33336331
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/append.js
@@ -0,0 +1,8 @@
+import creator from "../creator.js";
+
+export default function(name) {
+ var create = typeof name === "function" ? name : creator(name);
+ return this.select(function() {
+ return this.appendChild(create.apply(this, arguments));
+ });
+}
diff --git a/node_modules/d3-selection/src/selection/attr.js b/node_modules/d3-selection/src/selection/attr.js
new file mode 100644
index 00000000..5e933538
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/attr.js
@@ -0,0 +1,57 @@
+import namespace from "../namespace.js";
+
+function attrRemove(name) {
+ return function() {
+ this.removeAttribute(name);
+ };
+}
+
+function attrRemoveNS(fullname) {
+ return function() {
+ this.removeAttributeNS(fullname.space, fullname.local);
+ };
+}
+
+function attrConstant(name, value) {
+ return function() {
+ this.setAttribute(name, value);
+ };
+}
+
+function attrConstantNS(fullname, value) {
+ return function() {
+ this.setAttributeNS(fullname.space, fullname.local, value);
+ };
+}
+
+function attrFunction(name, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.removeAttribute(name);
+ else this.setAttribute(name, v);
+ };
+}
+
+function attrFunctionNS(fullname, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.removeAttributeNS(fullname.space, fullname.local);
+ else this.setAttributeNS(fullname.space, fullname.local, v);
+ };
+}
+
+export default function(name, value) {
+ var fullname = namespace(name);
+
+ if (arguments.length < 2) {
+ var node = this.node();
+ return fullname.local
+ ? node.getAttributeNS(fullname.space, fullname.local)
+ : node.getAttribute(fullname);
+ }
+
+ return this.each((value == null
+ ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function"
+ ? (fullname.local ? attrFunctionNS : attrFunction)
+ : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value));
+}
diff --git a/node_modules/d3-selection/src/selection/call.js b/node_modules/d3-selection/src/selection/call.js
new file mode 100644
index 00000000..2c41eeef
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/call.js
@@ -0,0 +1,6 @@
+export default function() {
+ var callback = arguments[0];
+ arguments[0] = this;
+ callback.apply(null, arguments);
+ return this;
+}
diff --git a/node_modules/d3-selection/src/selection/classed.js b/node_modules/d3-selection/src/selection/classed.js
new file mode 100644
index 00000000..b3563731
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/classed.js
@@ -0,0 +1,75 @@
+function classArray(string) {
+ return string.trim().split(/^|\s+/);
+}
+
+function classList(node) {
+ return node.classList || new ClassList(node);
+}
+
+function ClassList(node) {
+ this._node = node;
+ this._names = classArray(node.getAttribute("class") || "");
+}
+
+ClassList.prototype = {
+ add: function(name) {
+ var i = this._names.indexOf(name);
+ if (i < 0) {
+ this._names.push(name);
+ this._node.setAttribute("class", this._names.join(" "));
+ }
+ },
+ remove: function(name) {
+ var i = this._names.indexOf(name);
+ if (i >= 0) {
+ this._names.splice(i, 1);
+ this._node.setAttribute("class", this._names.join(" "));
+ }
+ },
+ contains: function(name) {
+ return this._names.indexOf(name) >= 0;
+ }
+};
+
+function classedAdd(node, names) {
+ var list = classList(node), i = -1, n = names.length;
+ while (++i < n) list.add(names[i]);
+}
+
+function classedRemove(node, names) {
+ var list = classList(node), i = -1, n = names.length;
+ while (++i < n) list.remove(names[i]);
+}
+
+function classedTrue(names) {
+ return function() {
+ classedAdd(this, names);
+ };
+}
+
+function classedFalse(names) {
+ return function() {
+ classedRemove(this, names);
+ };
+}
+
+function classedFunction(names, value) {
+ return function() {
+ (value.apply(this, arguments) ? classedAdd : classedRemove)(this, names);
+ };
+}
+
+export default function(name, value) {
+ var names = classArray(name + "");
+
+ if (arguments.length < 2) {
+ var list = classList(this.node()), i = -1, n = names.length;
+ while (++i < n) if (!list.contains(names[i])) return false;
+ return true;
+ }
+
+ return this.each((typeof value === "function"
+ ? classedFunction : value
+ ? classedTrue
+ : classedFalse)(names, value));
+}
diff --git a/node_modules/d3-selection/src/selection/clone.js b/node_modules/d3-selection/src/selection/clone.js
new file mode 100644
index 00000000..5e273bf1
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/clone.js
@@ -0,0 +1,13 @@
+function selection_cloneShallow() {
+ var clone = this.cloneNode(false), parent = this.parentNode;
+ return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
+}
+
+function selection_cloneDeep() {
+ var clone = this.cloneNode(true), parent = this.parentNode;
+ return parent ? parent.insertBefore(clone, this.nextSibling) : clone;
+}
+
+export default function(deep) {
+ return this.select(deep ? selection_cloneDeep : selection_cloneShallow);
+}
diff --git a/node_modules/d3-selection/src/selection/data.js b/node_modules/d3-selection/src/selection/data.js
new file mode 100644
index 00000000..8eb07133
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/data.js
@@ -0,0 +1,128 @@
+import {Selection} from "./index.js";
+import {EnterNode} from "./enter.js";
+import constant from "../constant.js";
+
+function bindIndex(parent, group, enter, update, exit, data) {
+ var i = 0,
+ node,
+ groupLength = group.length,
+ dataLength = data.length;
+
+ // Put any non-null nodes that fit into update.
+ // Put any null nodes into enter.
+ // Put any remaining data into enter.
+ for (; i < dataLength; ++i) {
+ if (node = group[i]) {
+ node.__data__ = data[i];
+ update[i] = node;
+ } else {
+ enter[i] = new EnterNode(parent, data[i]);
+ }
+ }
+
+ // Put any non-null nodes that don’t fit into exit.
+ for (; i < groupLength; ++i) {
+ if (node = group[i]) {
+ exit[i] = node;
+ }
+ }
+}
+
+function bindKey(parent, group, enter, update, exit, data, key) {
+ var i,
+ node,
+ nodeByKeyValue = new Map,
+ groupLength = group.length,
+ dataLength = data.length,
+ keyValues = new Array(groupLength),
+ keyValue;
+
+ // Compute the key for each node.
+ // If multiple nodes have the same key, the duplicates are added to exit.
+ for (i = 0; i < groupLength; ++i) {
+ if (node = group[i]) {
+ keyValues[i] = keyValue = key.call(node, node.__data__, i, group) + "";
+ if (nodeByKeyValue.has(keyValue)) {
+ exit[i] = node;
+ } else {
+ nodeByKeyValue.set(keyValue, node);
+ }
+ }
+ }
+
+ // Compute the key for each datum.
+ // If there a node associated with this key, join and add it to update.
+ // If there is not (or the key is a duplicate), add it to enter.
+ for (i = 0; i < dataLength; ++i) {
+ keyValue = key.call(parent, data[i], i, data) + "";
+ if (node = nodeByKeyValue.get(keyValue)) {
+ update[i] = node;
+ node.__data__ = data[i];
+ nodeByKeyValue.delete(keyValue);
+ } else {
+ enter[i] = new EnterNode(parent, data[i]);
+ }
+ }
+
+ // Add any remaining nodes that were not bound to data to exit.
+ for (i = 0; i < groupLength; ++i) {
+ if ((node = group[i]) && (nodeByKeyValue.get(keyValues[i]) === node)) {
+ exit[i] = node;
+ }
+ }
+}
+
+function datum(node) {
+ return node.__data__;
+}
+
+export default function(value, key) {
+ if (!arguments.length) return Array.from(this, datum);
+
+ var bind = key ? bindKey : bindIndex,
+ parents = this._parents,
+ groups = this._groups;
+
+ if (typeof value !== "function") value = constant(value);
+
+ for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {
+ var parent = parents[j],
+ group = groups[j],
+ groupLength = group.length,
+ data = arraylike(value.call(parent, parent && parent.__data__, j, parents)),
+ dataLength = data.length,
+ enterGroup = enter[j] = new Array(dataLength),
+ updateGroup = update[j] = new Array(dataLength),
+ exitGroup = exit[j] = new Array(groupLength);
+
+ bind(parent, group, enterGroup, updateGroup, exitGroup, data, key);
+
+ // Now connect the enter nodes to their following update node, such that
+ // appendChild can insert the materialized enter node before this node,
+ // rather than at the end of the parent node.
+ for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) {
+ if (previous = enterGroup[i0]) {
+ if (i0 >= i1) i1 = i0 + 1;
+ while (!(next = updateGroup[i1]) && ++i1 < dataLength);
+ previous._next = next || null;
+ }
+ }
+ }
+
+ update = new Selection(update, parents);
+ update._enter = enter;
+ update._exit = exit;
+ return update;
+}
+
+// Given some data, this returns an array-like view of it: an object that
+// exposes a length property and allows numeric indexing. Note that unlike
+// selectAll, this isn’t worried about “live” collections because the resulting
+// array will only be used briefly while data is being bound. (It is possible to
+// cause the data to change while iterating by using a key function, but please
+// don’t; we’d rather avoid a gratuitous copy.)
+function arraylike(data) {
+ return typeof data === "object" && "length" in data
+ ? data // Array, TypedArray, NodeList, array-like
+ : Array.from(data); // Map, Set, iterable, string, or anything else
+}
diff --git a/node_modules/d3-selection/src/selection/datum.js b/node_modules/d3-selection/src/selection/datum.js
new file mode 100644
index 00000000..5de4e580
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/datum.js
@@ -0,0 +1,5 @@
+export default function(value) {
+ return arguments.length
+ ? this.property("__data__", value)
+ : this.node().__data__;
+}
diff --git a/node_modules/d3-selection/src/selection/dispatch.js b/node_modules/d3-selection/src/selection/dispatch.js
new file mode 100644
index 00000000..8f57915f
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/dispatch.js
@@ -0,0 +1,34 @@
+import defaultView from "../window.js";
+
+function dispatchEvent(node, type, params) {
+ var window = defaultView(node),
+ event = window.CustomEvent;
+
+ if (typeof event === "function") {
+ event = new event(type, params);
+ } else {
+ event = window.document.createEvent("Event");
+ if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail;
+ else event.initEvent(type, false, false);
+ }
+
+ node.dispatchEvent(event);
+}
+
+function dispatchConstant(type, params) {
+ return function() {
+ return dispatchEvent(this, type, params);
+ };
+}
+
+function dispatchFunction(type, params) {
+ return function() {
+ return dispatchEvent(this, type, params.apply(this, arguments));
+ };
+}
+
+export default function(type, params) {
+ return this.each((typeof params === "function"
+ ? dispatchFunction
+ : dispatchConstant)(type, params));
+}
diff --git a/node_modules/d3-selection/src/selection/each.js b/node_modules/d3-selection/src/selection/each.js
new file mode 100644
index 00000000..260af8f2
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/each.js
@@ -0,0 +1,10 @@
+export default function(callback) {
+
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {
+ if (node = group[i]) callback.call(node, node.__data__, i, group);
+ }
+ }
+
+ return this;
+}
diff --git a/node_modules/d3-selection/src/selection/empty.js b/node_modules/d3-selection/src/selection/empty.js
new file mode 100644
index 00000000..4e2cf428
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/empty.js
@@ -0,0 +1,3 @@
+export default function() {
+ return !this.node();
+}
diff --git a/node_modules/d3-selection/src/selection/enter.js b/node_modules/d3-selection/src/selection/enter.js
new file mode 100644
index 00000000..83a3ed4d
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/enter.js
@@ -0,0 +1,22 @@
+import sparse from "./sparse.js";
+import {Selection} from "./index.js";
+
+export default function() {
+ return new Selection(this._enter || this._groups.map(sparse), this._parents);
+}
+
+export function EnterNode(parent, datum) {
+ this.ownerDocument = parent.ownerDocument;
+ this.namespaceURI = parent.namespaceURI;
+ this._next = null;
+ this._parent = parent;
+ this.__data__ = datum;
+}
+
+EnterNode.prototype = {
+ constructor: EnterNode,
+ appendChild: function(child) { return this._parent.insertBefore(child, this._next); },
+ insertBefore: function(child, next) { return this._parent.insertBefore(child, next); },
+ querySelector: function(selector) { return this._parent.querySelector(selector); },
+ querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); }
+};
diff --git a/node_modules/d3-selection/src/selection/exit.js b/node_modules/d3-selection/src/selection/exit.js
new file mode 100644
index 00000000..f5d7b45d
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/exit.js
@@ -0,0 +1,6 @@
+import sparse from "./sparse.js";
+import {Selection} from "./index.js";
+
+export default function() {
+ return new Selection(this._exit || this._groups.map(sparse), this._parents);
+}
diff --git a/node_modules/d3-selection/src/selection/filter.js b/node_modules/d3-selection/src/selection/filter.js
new file mode 100644
index 00000000..74b3d6f2
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/filter.js
@@ -0,0 +1,16 @@
+import {Selection} from "./index.js";
+import matcher from "../matcher.js";
+
+export default function(match) {
+ if (typeof match !== "function") match = matcher(match);
+
+ for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {
+ if ((node = group[i]) && match.call(node, node.__data__, i, group)) {
+ subgroup.push(node);
+ }
+ }
+ }
+
+ return new Selection(subgroups, this._parents);
+}
diff --git a/node_modules/d3-selection/src/selection/html.js b/node_modules/d3-selection/src/selection/html.js
new file mode 100644
index 00000000..df274428
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/html.js
@@ -0,0 +1,25 @@
+function htmlRemove() {
+ this.innerHTML = "";
+}
+
+function htmlConstant(value) {
+ return function() {
+ this.innerHTML = value;
+ };
+}
+
+function htmlFunction(value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ this.innerHTML = v == null ? "" : v;
+ };
+}
+
+export default function(value) {
+ return arguments.length
+ ? this.each(value == null
+ ? htmlRemove : (typeof value === "function"
+ ? htmlFunction
+ : htmlConstant)(value))
+ : this.node().innerHTML;
+}
diff --git a/node_modules/d3-selection/src/selection/index.js b/node_modules/d3-selection/src/selection/index.js
new file mode 100644
index 00000000..a593a219
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/index.js
@@ -0,0 +1,90 @@
+import selection_select from "./select.js";
+import selection_selectAll from "./selectAll.js";
+import selection_selectChild from "./selectChild.js";
+import selection_selectChildren from "./selectChildren.js";
+import selection_filter from "./filter.js";
+import selection_data from "./data.js";
+import selection_enter from "./enter.js";
+import selection_exit from "./exit.js";
+import selection_join from "./join.js";
+import selection_merge from "./merge.js";
+import selection_order from "./order.js";
+import selection_sort from "./sort.js";
+import selection_call from "./call.js";
+import selection_nodes from "./nodes.js";
+import selection_node from "./node.js";
+import selection_size from "./size.js";
+import selection_empty from "./empty.js";
+import selection_each from "./each.js";
+import selection_attr from "./attr.js";
+import selection_style from "./style.js";
+import selection_property from "./property.js";
+import selection_classed from "./classed.js";
+import selection_text from "./text.js";
+import selection_html from "./html.js";
+import selection_raise from "./raise.js";
+import selection_lower from "./lower.js";
+import selection_append from "./append.js";
+import selection_insert from "./insert.js";
+import selection_remove from "./remove.js";
+import selection_clone from "./clone.js";
+import selection_datum from "./datum.js";
+import selection_on from "./on.js";
+import selection_dispatch from "./dispatch.js";
+import selection_iterator from "./iterator.js";
+
+export var root = [null];
+
+export function Selection(groups, parents) {
+ this._groups = groups;
+ this._parents = parents;
+}
+
+function selection() {
+ return new Selection([[document.documentElement]], root);
+}
+
+function selection_selection() {
+ return this;
+}
+
+Selection.prototype = selection.prototype = {
+ constructor: Selection,
+ select: selection_select,
+ selectAll: selection_selectAll,
+ selectChild: selection_selectChild,
+ selectChildren: selection_selectChildren,
+ filter: selection_filter,
+ data: selection_data,
+ enter: selection_enter,
+ exit: selection_exit,
+ join: selection_join,
+ merge: selection_merge,
+ selection: selection_selection,
+ order: selection_order,
+ sort: selection_sort,
+ call: selection_call,
+ nodes: selection_nodes,
+ node: selection_node,
+ size: selection_size,
+ empty: selection_empty,
+ each: selection_each,
+ attr: selection_attr,
+ style: selection_style,
+ property: selection_property,
+ classed: selection_classed,
+ text: selection_text,
+ html: selection_html,
+ raise: selection_raise,
+ lower: selection_lower,
+ append: selection_append,
+ insert: selection_insert,
+ remove: selection_remove,
+ clone: selection_clone,
+ datum: selection_datum,
+ on: selection_on,
+ dispatch: selection_dispatch,
+ [Symbol.iterator]: selection_iterator
+};
+
+export default selection;
diff --git a/node_modules/d3-selection/src/selection/insert.js b/node_modules/d3-selection/src/selection/insert.js
new file mode 100644
index 00000000..1733de54
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/insert.js
@@ -0,0 +1,14 @@
+import creator from "../creator.js";
+import selector from "../selector.js";
+
+function constantNull() {
+ return null;
+}
+
+export default function(name, before) {
+ var create = typeof name === "function" ? name : creator(name),
+ select = before == null ? constantNull : typeof before === "function" ? before : selector(before);
+ return this.select(function() {
+ return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null);
+ });
+}
diff --git a/node_modules/d3-selection/src/selection/iterator.js b/node_modules/d3-selection/src/selection/iterator.js
new file mode 100644
index 00000000..58728191
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/iterator.js
@@ -0,0 +1,7 @@
+export default function*() {
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {
+ if (node = group[i]) yield node;
+ }
+ }
+}
diff --git a/node_modules/d3-selection/src/selection/join.js b/node_modules/d3-selection/src/selection/join.js
new file mode 100644
index 00000000..8b472813
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/join.js
@@ -0,0 +1,15 @@
+export default function(onenter, onupdate, onexit) {
+ var enter = this.enter(), update = this, exit = this.exit();
+ if (typeof onenter === "function") {
+ enter = onenter(enter);
+ if (enter) enter = enter.selection();
+ } else {
+ enter = enter.append(onenter + "");
+ }
+ if (onupdate != null) {
+ update = onupdate(update);
+ if (update) update = update.selection();
+ }
+ if (onexit == null) exit.remove(); else onexit(exit);
+ return enter && update ? enter.merge(update).order() : update;
+}
diff --git a/node_modules/d3-selection/src/selection/lower.js b/node_modules/d3-selection/src/selection/lower.js
new file mode 100644
index 00000000..d7247132
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/lower.js
@@ -0,0 +1,7 @@
+function lower() {
+ if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild);
+}
+
+export default function() {
+ return this.each(lower);
+}
diff --git a/node_modules/d3-selection/src/selection/merge.js b/node_modules/d3-selection/src/selection/merge.js
new file mode 100644
index 00000000..fd68d6c5
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/merge.js
@@ -0,0 +1,19 @@
+import {Selection} from "./index.js";
+
+export default function(context) {
+ var selection = context.selection ? context.selection() : context;
+
+ for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {
+ for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {
+ if (node = group0[i] || group1[i]) {
+ merge[i] = node;
+ }
+ }
+ }
+
+ for (; j < m0; ++j) {
+ merges[j] = groups0[j];
+ }
+
+ return new Selection(merges, this._parents);
+}
diff --git a/node_modules/d3-selection/src/selection/node.js b/node_modules/d3-selection/src/selection/node.js
new file mode 100644
index 00000000..0691cbc0
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/node.js
@@ -0,0 +1,11 @@
+export default function() {
+
+ for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {
+ for (var group = groups[j], i = 0, n = group.length; i < n; ++i) {
+ var node = group[i];
+ if (node) return node;
+ }
+ }
+
+ return null;
+}
diff --git a/node_modules/d3-selection/src/selection/nodes.js b/node_modules/d3-selection/src/selection/nodes.js
new file mode 100644
index 00000000..7f38090d
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/nodes.js
@@ -0,0 +1,3 @@
+export default function() {
+ return Array.from(this);
+}
diff --git a/node_modules/d3-selection/src/selection/on.js b/node_modules/d3-selection/src/selection/on.js
new file mode 100644
index 00000000..7906c8ca
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/on.js
@@ -0,0 +1,67 @@
+function contextListener(listener) {
+ return function(event) {
+ listener.call(this, event, this.__data__);
+ };
+}
+
+function parseTypenames(typenames) {
+ return typenames.trim().split(/^|\s+/).map(function(t) {
+ var name = "", i = t.indexOf(".");
+ if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+ return {type: t, name: name};
+ });
+}
+
+function onRemove(typename) {
+ return function() {
+ var on = this.__on;
+ if (!on) return;
+ for (var j = 0, i = -1, m = on.length, o; j < m; ++j) {
+ if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) {
+ this.removeEventListener(o.type, o.listener, o.options);
+ } else {
+ on[++i] = o;
+ }
+ }
+ if (++i) on.length = i;
+ else delete this.__on;
+ };
+}
+
+function onAdd(typename, value, options) {
+ return function() {
+ var on = this.__on, o, listener = contextListener(value);
+ if (on) for (var j = 0, m = on.length; j < m; ++j) {
+ if ((o = on[j]).type === typename.type && o.name === typename.name) {
+ this.removeEventListener(o.type, o.listener, o.options);
+ this.addEventListener(o.type, o.listener = listener, o.options = options);
+ o.value = value;
+ return;
+ }
+ }
+ this.addEventListener(typename.type, listener, options);
+ o = {type: typename.type, name: typename.name, value: value, listener: listener, options: options};
+ if (!on) this.__on = [o];
+ else on.push(o);
+ };
+}
+
+export default function(typename, value, options) {
+ var typenames = parseTypenames(typename + ""), i, n = typenames.length, t;
+
+ if (arguments.length < 2) {
+ var on = this.node().__on;
+ if (on) for (var j = 0, m = on.length, o; j < m; ++j) {
+ for (i = 0, o = on[j]; i < n; ++i) {
+ if ((t = typenames[i]).type === o.type && t.name === o.name) {
+ return o.value;
+ }
+ }
+ }
+ return;
+ }
+
+ on = value ? onAdd : onRemove;
+ for (i = 0; i < n; ++i) this.each(on(typenames[i], value, options));
+ return this;
+}
diff --git a/node_modules/d3-selection/src/selection/order.js b/node_modules/d3-selection/src/selection/order.js
new file mode 100644
index 00000000..f8c52b4b
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/order.js
@@ -0,0 +1,13 @@
+export default function() {
+
+ for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) {
+ for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
+ if (node = group[i]) {
+ if (next && node.compareDocumentPosition(next) ^ 4) next.parentNode.insertBefore(node, next);
+ next = node;
+ }
+ }
+ }
+
+ return this;
+}
diff --git a/node_modules/d3-selection/src/selection/property.js b/node_modules/d3-selection/src/selection/property.js
new file mode 100644
index 00000000..3b7efd39
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/property.js
@@ -0,0 +1,28 @@
+function propertyRemove(name) {
+ return function() {
+ delete this[name];
+ };
+}
+
+function propertyConstant(name, value) {
+ return function() {
+ this[name] = value;
+ };
+}
+
+function propertyFunction(name, value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) delete this[name];
+ else this[name] = v;
+ };
+}
+
+export default function(name, value) {
+ return arguments.length > 1
+ ? this.each((value == null
+ ? propertyRemove : typeof value === "function"
+ ? propertyFunction
+ : propertyConstant)(name, value))
+ : this.node()[name];
+}
diff --git a/node_modules/d3-selection/src/selection/raise.js b/node_modules/d3-selection/src/selection/raise.js
new file mode 100644
index 00000000..3e9e1c9b
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/raise.js
@@ -0,0 +1,7 @@
+function raise() {
+ if (this.nextSibling) this.parentNode.appendChild(this);
+}
+
+export default function() {
+ return this.each(raise);
+}
diff --git a/node_modules/d3-selection/src/selection/remove.js b/node_modules/d3-selection/src/selection/remove.js
new file mode 100644
index 00000000..12a81060
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/remove.js
@@ -0,0 +1,8 @@
+function remove() {
+ var parent = this.parentNode;
+ if (parent) parent.removeChild(this);
+}
+
+export default function() {
+ return this.each(remove);
+}
diff --git a/node_modules/d3-selection/src/selection/select.js b/node_modules/d3-selection/src/selection/select.js
new file mode 100644
index 00000000..223cc243
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/select.js
@@ -0,0 +1,17 @@
+import {Selection} from "./index.js";
+import selector from "../selector.js";
+
+export default function(select) {
+ if (typeof select !== "function") select = selector(select);
+
+ for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {
+ if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {
+ if ("__data__" in node) subnode.__data__ = node.__data__;
+ subgroup[i] = subnode;
+ }
+ }
+ }
+
+ return new Selection(subgroups, this._parents);
+}
diff --git a/node_modules/d3-selection/src/selection/selectAll.js b/node_modules/d3-selection/src/selection/selectAll.js
new file mode 100644
index 00000000..2a87a27b
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/selectAll.js
@@ -0,0 +1,25 @@
+import {Selection} from "./index.js";
+import array from "../array.js";
+import selectorAll from "../selectorAll.js";
+
+function arrayAll(select) {
+ return function() {
+ return array(select.apply(this, arguments));
+ };
+}
+
+export default function(select) {
+ if (typeof select === "function") select = arrayAll(select);
+ else select = selectorAll(select);
+
+ for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
+ if (node = group[i]) {
+ subgroups.push(select.call(node, node.__data__, i, group));
+ parents.push(node);
+ }
+ }
+ }
+
+ return new Selection(subgroups, parents);
+}
diff --git a/node_modules/d3-selection/src/selection/selectChild.js b/node_modules/d3-selection/src/selection/selectChild.js
new file mode 100644
index 00000000..d0427947
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/selectChild.js
@@ -0,0 +1,18 @@
+import {childMatcher} from "../matcher.js";
+
+var find = Array.prototype.find;
+
+function childFind(match) {
+ return function() {
+ return find.call(this.children, match);
+ };
+}
+
+function childFirst() {
+ return this.firstElementChild;
+}
+
+export default function(match) {
+ return this.select(match == null ? childFirst
+ : childFind(typeof match === "function" ? match : childMatcher(match)));
+}
diff --git a/node_modules/d3-selection/src/selection/selectChildren.js b/node_modules/d3-selection/src/selection/selectChildren.js
new file mode 100644
index 00000000..d514d3b3
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/selectChildren.js
@@ -0,0 +1,18 @@
+import {childMatcher} from "../matcher.js";
+
+var filter = Array.prototype.filter;
+
+function children() {
+ return Array.from(this.children);
+}
+
+function childrenFilter(match) {
+ return function() {
+ return filter.call(this.children, match);
+ };
+}
+
+export default function(match) {
+ return this.selectAll(match == null ? children
+ : childrenFilter(typeof match === "function" ? match : childMatcher(match)));
+}
diff --git a/node_modules/d3-selection/src/selection/size.js b/node_modules/d3-selection/src/selection/size.js
new file mode 100644
index 00000000..e07eaa4f
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/size.js
@@ -0,0 +1,5 @@
+export default function() {
+ let size = 0;
+ for (const node of this) ++size; // eslint-disable-line no-unused-vars
+ return size;
+}
diff --git a/node_modules/d3-selection/src/selection/sort.js b/node_modules/d3-selection/src/selection/sort.js
new file mode 100644
index 00000000..336760f1
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/sort.js
@@ -0,0 +1,24 @@
+import {Selection} from "./index.js";
+
+export default function(compare) {
+ if (!compare) compare = ascending;
+
+ function compareNode(a, b) {
+ return a && b ? compare(a.__data__, b.__data__) : !a - !b;
+ }
+
+ for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) {
+ for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) {
+ if (node = group[i]) {
+ sortgroup[i] = node;
+ }
+ }
+ sortgroup.sort(compareNode);
+ }
+
+ return new Selection(sortgroups, this._parents).order();
+}
+
+function ascending(a, b) {
+ return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+}
diff --git a/node_modules/d3-selection/src/selection/sparse.js b/node_modules/d3-selection/src/selection/sparse.js
new file mode 100644
index 00000000..7b261ad1
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/sparse.js
@@ -0,0 +1,3 @@
+export default function(update) {
+ return new Array(update.length);
+}
diff --git a/node_modules/d3-selection/src/selection/style.js b/node_modules/d3-selection/src/selection/style.js
new file mode 100644
index 00000000..7e0f0586
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/style.js
@@ -0,0 +1,35 @@
+import defaultView from "../window.js";
+
+function styleRemove(name) {
+ return function() {
+ this.style.removeProperty(name);
+ };
+}
+
+function styleConstant(name, value, priority) {
+ return function() {
+ this.style.setProperty(name, value, priority);
+ };
+}
+
+function styleFunction(name, value, priority) {
+ return function() {
+ var v = value.apply(this, arguments);
+ if (v == null) this.style.removeProperty(name);
+ else this.style.setProperty(name, v, priority);
+ };
+}
+
+export default function(name, value, priority) {
+ return arguments.length > 1
+ ? this.each((value == null
+ ? styleRemove : typeof value === "function"
+ ? styleFunction
+ : styleConstant)(name, value, priority == null ? "" : priority))
+ : styleValue(this.node(), name);
+}
+
+export function styleValue(node, name) {
+ return node.style.getPropertyValue(name)
+ || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);
+}
diff --git a/node_modules/d3-selection/src/selection/text.js b/node_modules/d3-selection/src/selection/text.js
new file mode 100644
index 00000000..a902980c
--- /dev/null
+++ b/node_modules/d3-selection/src/selection/text.js
@@ -0,0 +1,25 @@
+function textRemove() {
+ this.textContent = "";
+}
+
+function textConstant(value) {
+ return function() {
+ this.textContent = value;
+ };
+}
+
+function textFunction(value) {
+ return function() {
+ var v = value.apply(this, arguments);
+ this.textContent = v == null ? "" : v;
+ };
+}
+
+export default function(value) {
+ return arguments.length
+ ? this.each(value == null
+ ? textRemove : (typeof value === "function"
+ ? textFunction
+ : textConstant)(value))
+ : this.node().textContent;
+}
diff --git a/node_modules/d3-selection/src/selector.js b/node_modules/d3-selection/src/selector.js
new file mode 100644
index 00000000..058bd73a
--- /dev/null
+++ b/node_modules/d3-selection/src/selector.js
@@ -0,0 +1,7 @@
+function none() {}
+
+export default function(selector) {
+ return selector == null ? none : function() {
+ return this.querySelector(selector);
+ };
+}
diff --git a/node_modules/d3-selection/src/selectorAll.js b/node_modules/d3-selection/src/selectorAll.js
new file mode 100644
index 00000000..ea42ffa3
--- /dev/null
+++ b/node_modules/d3-selection/src/selectorAll.js
@@ -0,0 +1,9 @@
+function empty() {
+ return [];
+}
+
+export default function(selector) {
+ return selector == null ? empty : function() {
+ return this.querySelectorAll(selector);
+ };
+}
diff --git a/node_modules/d3-selection/src/sourceEvent.js b/node_modules/d3-selection/src/sourceEvent.js
new file mode 100644
index 00000000..8ab130e2
--- /dev/null
+++ b/node_modules/d3-selection/src/sourceEvent.js
@@ -0,0 +1,5 @@
+export default function(event) {
+ let sourceEvent;
+ while (sourceEvent = event.sourceEvent) event = sourceEvent;
+ return event;
+}
diff --git a/node_modules/d3-selection/src/window.js b/node_modules/d3-selection/src/window.js
new file mode 100644
index 00000000..ca1105bd
--- /dev/null
+++ b/node_modules/d3-selection/src/window.js
@@ -0,0 +1,5 @@
+export default function(node) {
+ return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node
+ || (node.document && node) // node is a Window
+ || node.defaultView; // node is a Document
+}
diff --git a/node_modules/d3-shape/LICENSE b/node_modules/d3-shape/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-shape/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-shape/README.md b/node_modules/d3-shape/README.md
new file mode 100644
index 00000000..0d53ef09
--- /dev/null
+++ b/node_modules/d3-shape/README.md
@@ -0,0 +1,1207 @@
+# d3-shape
+
+Visualizations typically consist of discrete graphical marks, such as [symbols](#symbols), [arcs](#arcs), [lines](#lines) and [areas](#areas). While the rectangles of a bar chart may be easy enough to generate directly using [SVG](http://www.w3.org/TR/SVG/paths.html#PathData) or [Canvas](http://www.w3.org/TR/2dcontext/#canvaspathmethods), other shapes are complex, such as rounded annular sectors and centripetal Catmull–Rom splines. This module provides a variety of shape generators for your convenience.
+
+As with other aspects of D3, these shapes are driven by data: each shape generator exposes accessors that control how the input data are mapped to a visual representation. For example, you might define a line generator for a time series by [scaling](https://github.com/d3/d3-scale) fields of your data to fit the chart:
+
+```js
+const line = d3.line()
+ .x(d => x(d.date))
+ .y(d => y(d.value));
+```
+
+This line generator can then be used to compute the `d` attribute of an SVG path element:
+
+```js
+path.datum(data).attr("d", line);
+```
+
+Or you can use it to render to a Canvas 2D context:
+
+```js
+line.context(context)(data);
+```
+
+For more, read [Introducing d3-shape](https://medium.com/@mbostock/introducing-d3-shape-73f8367e6d12).
+
+## Installing
+
+If you use npm, `npm install d3-shape`. You can also download the [latest release on GitHub](https://github.com/d3/d3-shape/releases/latest). For vanilla HTML in modern browsers, import d3-shape from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-shape’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+```
+
+## API Reference
+
+* [Arcs](#arcs)
+* [Pies](#pies)
+* [Lines](#lines)
+* [Areas](#areas)
+* [Curves](#curves)
+* [Custom Curves](#custom-curves)
+* [Links](#links)
+* [Symbols](#symbols)
+* [Custom Symbol Types](#custom-symbol-types)
+* [Stacks](#stacks)
+
+Note: all the methods that accept arrays also accept iterables and convert them to arrays internally.
+
+### Arcs
+
+[# d3.arc () · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+Constructs a new arc generator with the default settings.
+
+# arc (arguments… ) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+Generates an arc for the given *arguments*. The *arguments* are arbitrary; they are simply propagated to the arc generator’s accessor functions along with the `this` object. For example, with the default settings, an object with radii and angles is expected:
+
+```js
+const arc = d3.arc();
+
+arc({
+ innerRadius: 0,
+ outerRadius: 100,
+ startAngle: 0,
+ endAngle: Math.PI / 2
+}); // "M0,-100A100,100,0,0,1,100,0L0,0Z"
+```
+
+If the radii and angles are instead defined as constants, you can generate an arc without any arguments:
+
+```js
+const arc = d3.arc()
+ .innerRadius(0)
+ .outerRadius(100)
+ .startAngle(0)
+ .endAngle(Math.PI / 2);
+
+arc(); // "M0,-100A100,100,0,0,1,100,0L0,0Z"
+```
+
+If the arc generator has a [context](#arc_context), then the arc is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls and this function returns void. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string is returned.
+
+# arc .centroid (arguments… ) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+Computes the midpoint [*x*, *y*] of the center line of the arc that would be [generated](#_arc) by the given *arguments*. The *arguments* are arbitrary; they are simply propagated to the arc generator’s accessor functions along with the `this` object. To be consistent with the generated arc, the accessors must be deterministic, *i.e.*, return the same value given the same arguments. The midpoint is defined as ([startAngle](#arc_startAngle) + [endAngle](#arc_endAngle)) / 2 and ([innerRadius](#arc_innerRadius) + [outerRadius](#arc_outerRadius)) / 2. For example:
+
+[# arc .innerRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *radius* is specified, sets the inner radius to the specified function or number and returns this arc generator. If *radius* is not specified, returns the current inner radius accessor, which defaults to:
+
+```js
+function innerRadius(d) {
+ return d.innerRadius;
+}
+```
+
+Specifying the inner radius as a function is useful for constructing a stacked polar bar chart, often in conjunction with a [sqrt scale](https://github.com/d3/d3-scale#sqrt). More commonly, a constant inner radius is used for a donut or pie chart. If the outer radius is smaller than the inner radius, the inner and outer radii are swapped. A negative value is treated as zero.
+
+# arc .outerRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *radius* is specified, sets the outer radius to the specified function or number and returns this arc generator. If *radius* is not specified, returns the current outer radius accessor, which defaults to:
+
+```js
+function outerRadius(d) {
+ return d.outerRadius;
+}
+```
+
+Specifying the outer radius as a function is useful for constructing a coxcomb or polar bar chart, often in conjunction with a [sqrt scale](https://github.com/d3/d3-scale#sqrt). More commonly, a constant outer radius is used for a pie or donut chart. If the outer radius is smaller than the inner radius, the inner and outer radii are swapped. A negative value is treated as zero.
+
+# arc .cornerRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *radius* is specified, sets the corner radius to the specified function or number and returns this arc generator. If *radius* is not specified, returns the current corner radius accessor, which defaults to:
+
+```js
+function cornerRadius() {
+ return 0;
+}
+```
+
+If the corner radius is greater than zero, the corners of the arc are rounded using circles of the given radius. For a circular sector, the two outer corners are rounded; for an annular sector, all four corners are rounded. The corner circles are shown in this diagram:
+
+[# arc .startAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *angle* is specified, sets the start angle to the specified function or number and returns this arc generator. If *angle* is not specified, returns the current start angle accessor, which defaults to:
+
+```js
+function startAngle(d) {
+ return d.startAngle;
+}
+```
+
+The *angle* is specified in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise. If |endAngle - startAngle| ≥ τ, a complete circle or annulus is generated rather than a sector.
+
+# arc .endAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *angle* is specified, sets the end angle to the specified function or number and returns this arc generator. If *angle* is not specified, returns the current end angle accessor, which defaults to:
+
+```js
+function endAngle(d) {
+ return d.endAngle;
+}
+```
+
+The *angle* is specified in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise. If |endAngle - startAngle| ≥ τ, a complete circle or annulus is generated rather than a sector.
+
+# arc .padAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *angle* is specified, sets the pad angle to the specified function or number and returns this arc generator. If *angle* is not specified, returns the current pad angle accessor, which defaults to:
+
+```js
+function padAngle() {
+ return d && d.padAngle;
+}
+```
+
+The pad angle is converted to a fixed linear distance separating adjacent arcs, defined as [padRadius](#arc_padRadius) * padAngle. This distance is subtracted equally from the [start](#arc_startAngle) and [end](#arc_endAngle) of the arc. If the arc forms a complete circle or annulus, as when |endAngle - startAngle| ≥ τ, the pad angle is ignored.
+
+If the [inner radius](#arc_innerRadius) or angular span is small relative to the pad angle, it may not be possible to maintain parallel edges between adjacent arcs. In this case, the inner edge of the arc may collapse to a point, similar to a circular sector. For this reason, padding is typically only applied to annular sectors (*i.e.*, when innerRadius is positive), as shown in this diagram:
+
+[# arc .padRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *radius* is specified, sets the pad radius to the specified function or number and returns this arc generator. If *radius* is not specified, returns the current pad radius accessor, which defaults to null, indicating that the pad radius should be automatically computed as sqrt([innerRadius](#arc_innerRadius) * innerRadius + [outerRadius](#arc_outerRadius) * outerRadius). The pad radius determines the fixed linear distance separating adjacent arcs, defined as padRadius * [padAngle](#arc_padAngle).
+
+# arc .context ([context ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/arc.js)
+
+If *context* is specified, sets the context and returns this arc generator. If *context* is not specified, returns the current context, which defaults to null. If the context is not null, then the [generated arc](#_arc) is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string representing the generated arc is returned.
+
+### Pies
+
+The pie generator does not produce a shape directly, but instead computes the necessary angles to represent a tabular dataset as a pie or donut chart; these angles can then be passed to an [arc generator](#arcs).
+
+# d3.pie () · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+Constructs a new pie generator with the default settings.
+
+# pie (data [, arguments… ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+Generates a pie for the given array of *data*, returning an array of objects representing each datum’s arc angles. Any additional *arguments* are arbitrary; they are simply propagated to the pie generator’s accessor functions along with the `this` object. The length of the returned array is the same as *data*, and each element *i* in the returned array corresponds to the element *i* in the input data. Each object in the returned array has the following properties:
+
+* `data` - the input datum; the corresponding element in the input data array.
+* `value` - the numeric [value](#pie_value) of the arc.
+* `index` - the zero-based [sorted index](#pie_sort) of the arc.
+* `startAngle` - the [start angle](#pie_startAngle) of the arc.
+* `endAngle` - the [end angle](#pie_endAngle) of the arc.
+* `padAngle` - the [pad angle](#pie_padAngle) of the arc.
+
+This representation is designed to work with the arc generator’s default [startAngle](#arc_startAngle), [endAngle](#arc_endAngle) and [padAngle](#arc_padAngle) accessors. The angular units are arbitrary, but if you plan to use the pie generator in conjunction with an [arc generator](#arcs), you should specify angles in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise.
+
+Given a small dataset of numbers, here is how to compute the arc angles to render this data as a pie chart:
+
+```js
+const data = [1, 1, 2, 3, 5, 8, 13, 21];
+const arcs = d3.pie()(data);
+```
+
+The first pair of parens, `pie()`, [constructs](#pie) a default pie generator. The second, `pie()(data)`, [invokes](#_pie) this generator on the dataset, returning an array of objects:
+
+```json
+[
+ {"data": 1, "value": 1, "index": 6, "startAngle": 6.050474740247008, "endAngle": 6.166830023713296, "padAngle": 0},
+ {"data": 1, "value": 1, "index": 7, "startAngle": 6.166830023713296, "endAngle": 6.283185307179584, "padAngle": 0},
+ {"data": 2, "value": 2, "index": 5, "startAngle": 5.817764173314431, "endAngle": 6.050474740247008, "padAngle": 0},
+ {"data": 3, "value": 3, "index": 4, "startAngle": 5.468698322915565, "endAngle": 5.817764173314431, "padAngle": 0},
+ {"data": 5, "value": 5, "index": 3, "startAngle": 4.886921905584122, "endAngle": 5.468698322915565, "padAngle": 0},
+ {"data": 8, "value": 8, "index": 2, "startAngle": 3.956079637853813, "endAngle": 4.886921905584122, "padAngle": 0},
+ {"data": 13, "value": 13, "index": 1, "startAngle": 2.443460952792061, "endAngle": 3.956079637853813, "padAngle": 0},
+ {"data": 21, "value": 21, "index": 0, "startAngle": 0.000000000000000, "endAngle": 2.443460952792061, "padAngle": 0}
+]
+```
+
+Note that the returned array is in the same order as the data, even though this pie chart is [sorted](#pie_sortValues) by descending value, starting with the arc for the last datum (value 21) at 12 o’clock.
+
+# pie .value ([value ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *value* is specified, sets the value accessor to the specified function or number and returns this pie generator. If *value* is not specified, returns the current value accessor, which defaults to:
+
+```js
+function value(d) {
+ return d;
+}
+```
+
+When a pie is [generated](#_pie), the value accessor will be invoked for each element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. The default value accessor assumes that the input data are numbers, or that they are coercible to numbers using [valueOf](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf). If your data are not simply numbers, then you should specify an accessor that returns the corresponding numeric value for a given datum. For example:
+
+```js
+const data = [
+ {"number": 4, "name": "Locke"},
+ {"number": 8, "name": "Reyes"},
+ {"number": 15, "name": "Ford"},
+ {"number": 16, "name": "Jarrah"},
+ {"number": 23, "name": "Shephard"},
+ {"number": 42, "name": "Kwon"}
+];
+
+const arcs = d3.pie()
+ .value(d => d.number)
+ (data);
+```
+
+This is similar to [mapping](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map) your data to values before invoking the pie generator:
+
+```js
+const arcs = d3.pie()(data.map(d => d.number));
+```
+
+The benefit of an accessor is that the input data remains associated with the returned objects, thereby making it easier to access other fields of the data, for example to set the color or to add text labels.
+
+# pie .sort ([compare ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *compare* is specified, sets the data comparator to the specified function and returns this pie generator. If *compare* is not specified, returns the current data comparator, which defaults to null. If both the data comparator and the value comparator are null, then arcs are positioned in the original input order. Otherwise, the data is sorted according to the data comparator, and the resulting order is used. Setting the data comparator implicitly sets the [value comparator](#pie_sortValues) to null.
+
+The *compare* function takes two arguments *a* and *b*, each elements from the input data array. If the arc for *a* should be before the arc for *b*, then the comparator must return a number less than zero; if the arc for *a* should be after the arc for *b*, then the comparator must return a number greater than zero; returning zero means that the relative order of *a* and *b* is unspecified. For example, to sort arcs by their associated name:
+
+```js
+pie.sort((a, b) => a.name.localeCompare(b.name));
+```
+
+Sorting does not affect the order of the [generated arc array](#_pie) which is always in the same order as the input data array; it merely affects the computed angles of each arc. The first arc starts at the [start angle](#pie_startAngle) and the last arc ends at the [end angle](#pie_endAngle).
+
+# pie .sortValues ([compare ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *compare* is specified, sets the value comparator to the specified function and returns this pie generator. If *compare* is not specified, returns the current value comparator, which defaults to descending value. The default value comparator is implemented as:
+
+```js
+function compare(a, b) {
+ return b - a;
+}
+```
+
+If both the data comparator and the value comparator are null, then arcs are positioned in the original input order. Otherwise, the data is sorted according to the data comparator, and the resulting order is used. Setting the value comparator implicitly sets the [data comparator](#pie_sort) to null.
+
+The value comparator is similar to the [data comparator](#pie_sort), except the two arguments *a* and *b* are values derived from the input data array using the [value accessor](#pie_value), not the data elements. If the arc for *a* should be before the arc for *b*, then the comparator must return a number less than zero; if the arc for *a* should be after the arc for *b*, then the comparator must return a number greater than zero; returning zero means that the relative order of *a* and *b* is unspecified. For example, to sort arcs by ascending value:
+
+```js
+pie.sortValues((a, b) => a - b);
+```
+
+Sorting does not affect the order of the [generated arc array](#_pie) which is always in the same order as the input data array; it merely affects the computed angles of each arc. The first arc starts at the [start angle](#pie_startAngle) and the last arc ends at the [end angle](#pie_endAngle).
+
+# pie .startAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *angle* is specified, sets the overall start angle of the pie to the specified function or number and returns this pie generator. If *angle* is not specified, returns the current start angle accessor, which defaults to:
+
+```js
+function startAngle() {
+ return 0;
+}
+```
+
+The start angle here means the *overall* start angle of the pie, *i.e.*, the start angle of the first arc. The start angle accessor is invoked once, being passed the same arguments and `this` context as the [pie generator](#_pie). The units of *angle* are arbitrary, but if you plan to use the pie generator in conjunction with an [arc generator](#arcs), you should specify an angle in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise.
+
+# pie .endAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *angle* is specified, sets the overall end angle of the pie to the specified function or number and returns this pie generator. If *angle* is not specified, returns the current end angle accessor, which defaults to:
+
+```js
+function endAngle() {
+ return 2 * Math.PI;
+}
+```
+
+The end angle here means the *overall* end angle of the pie, *i.e.*, the end angle of the last arc. The end angle accessor is invoked once, being passed the same arguments and `this` context as the [pie generator](#_pie). The units of *angle* are arbitrary, but if you plan to use the pie generator in conjunction with an [arc generator](#arcs), you should specify an angle in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise.
+
+The value of the end angle is constrained to [startAngle](#pie_startAngle) ± τ, such that |endAngle - startAngle| ≤ τ.
+
+# pie .padAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/pie.js)
+
+If *angle* is specified, sets the pad angle to the specified function or number and returns this pie generator. If *angle* is not specified, returns the current pad angle accessor, which defaults to:
+
+```js
+function padAngle() {
+ return 0;
+}
+```
+
+The pad angle here means the angular separation between each adjacent arc. The total amount of padding reserved is the specified *angle* times the number of elements in the input data array, and at most |endAngle - startAngle|; the remaining space is then divided proportionally by [value](#pie_value) such that the relative area of each arc is preserved. See the [pie padding animation](http://bl.ocks.org/mbostock/3e961b4c97a1b543fff2) for illustration. The pad angle accessor is invoked once, being passed the same arguments and `this` context as the [pie generator](#_pie). The units of *angle* are arbitrary, but if you plan to use the pie generator in conjunction with an [arc generator](#arcs), you should specify an angle in radians.
+
+### Lines
+
+[# d3.line ([x ][, y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+Constructs a new line generator with the default settings. If *x* or *y* are specified, sets the corresponding accessors to the specified function or number and returns this line generator.
+
+# line (data ) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+Generates a line for the given array of *data*. Depending on this line generator’s associated [curve](#line_curve), the given input *data* may need to be sorted by *x*-value before being passed to the line generator. If the line generator has a [context](#line_context), then the line is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls and this function returns void. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string is returned.
+
+# line .x ([x ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+If *x* is specified, sets the x accessor to the specified function or number and returns this line generator. If *x* is not specified, returns the current x accessor, which defaults to:
+
+```js
+function x(d) {
+ return d[0];
+}
+```
+
+When a line is [generated](#_line), the x accessor will be invoked for each [defined](#line_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. The default x accessor assumes that the input data are two-element arrays of numbers. If your data are in a different format, or if you wish to transform the data before rendering, then you should specify a custom accessor. For example, if `x` is a [time scale](https://github.com/d3/d3-scale#time-scales) and `y` is a [linear scale](https://github.com/d3/d3-scale#linear-scales):
+
+```js
+const data = [
+ {date: new Date(2007, 3, 24), value: 93.24},
+ {date: new Date(2007, 3, 25), value: 95.35},
+ {date: new Date(2007, 3, 26), value: 98.84},
+ {date: new Date(2007, 3, 27), value: 99.92},
+ {date: new Date(2007, 3, 30), value: 99.80},
+ {date: new Date(2007, 4, 1), value: 99.47},
+ …
+];
+
+const line = d3.line()
+ .x(d => x(d.date))
+ .y(d => y(d.value));
+```
+
+# line .y ([y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+If *y* is specified, sets the y accessor to the specified function or number and returns this line generator. If *y* is not specified, returns the current y accessor, which defaults to:
+
+```js
+function y(d) {
+ return d[1];
+}
+```
+
+When a line is [generated](#_line), the y accessor will be invoked for each [defined](#line_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. The default y accessor assumes that the input data are two-element arrays of numbers. See [*line*.x](#line_x) for more information.
+
+# line .defined ([defined ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+If *defined* is specified, sets the defined accessor to the specified function or boolean and returns this line generator. If *defined* is not specified, returns the current defined accessor, which defaults to:
+
+```js
+function defined() {
+ return true;
+}
+```
+
+The default accessor thus assumes that the input data is always defined. When a line is [generated](#_line), the defined accessor will be invoked for each element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. If the given element is defined (*i.e.*, if the defined accessor returns a truthy value for this element), the [x](#line_x) and [y](#line_y) accessors will subsequently be evaluated and the point will be added to the current line segment. Otherwise, the element will be skipped, the current line segment will be ended, and a new line segment will be generated for the next defined point. As a result, the generated line may have several discrete segments. For example:
+
+[# line .curve ([curve ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+If *curve* is specified, sets the [curve factory](#curves) and returns this line generator. If *curve* is not specified, returns the current curve factory, which defaults to [curveLinear](#curveLinear).
+
+# line .context ([context ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/line.js), [Examples](https://observablehq.com/@d3/d3-line)
+
+If *context* is specified, sets the context and returns this line generator. If *context* is not specified, returns the current context, which defaults to null. If the context is not null, then the [generated line](#_line) is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string representing the generated line is returned.
+
+# d3.lineRadial () · [Source](https://github.com/d3/d3-shape/blob/main/src/lineRadial.js), [Examples](https://observablehq.com/@d3/d3-lineradial)
+
+# lineRadial (data ) · [Source](https://github.com/d3/d3-shape/blob/main/src/lineRadial.js#L4), [Examples](https://observablehq.com/@d3/d3-lineradial)
+
+Equivalent to [*line*](#_line).
+
+# lineRadial .angle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/lineRadial.js#L7), [Examples](https://observablehq.com/@d3/d3-lineradial)
+
+Equivalent to [*line*.x](#line_x), except the accessor returns the angle in radians, with 0 at -*y* (12 o’clock).
+
+# lineRadial .radius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/lineRadial.js#L8), [Examples](https://observablehq.com/@d3/d3-lineradial)
+
+Equivalent to [*line*.y](#line_y), except the accessor returns the radius: the distance from the origin ⟨0,0⟩.
+
+# lineRadial .defined ([defined ])
+
+Equivalent to [*line*.defined](#line_defined).
+
+# lineRadial .curve ([curve ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/lineRadial.js), [Examples](https://observablehq.com/@d3/d3-lineradial)
+
+Equivalent to [*line*.curve](#line_curve). Note that [curveMonotoneX](#curveMonotoneX) or [curveMonotoneY](#curveMonotoneY) are not recommended for radial lines because they assume that the data is monotonic in *x* or *y*, which is typically untrue of radial lines.
+
+# lineRadial .context ([context ])
+
+Equivalent to [*line*.context](#line_context).
+
+### Areas
+
+[topline ) is defined by x1 and y1 and is rendered first; the second line (the baseline ) is defined by x0 and y0 and is rendered second, with the points in reverse order. With a [curveLinear](#curveLinear) [curve](#area_curve), this produces a clockwise polygon.
+
+# d3.area ([x ][, y0 ][, y1 ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+Constructs a new area generator with the default settings. If *x*, *y0* or *y1* are specified, sets the corresponding accessors to the specified function or number and returns this area generator.
+
+# area (data ) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+Generates an area for the given array of *data*. Depending on this area generator’s associated [curve](#area_curve), the given input *data* may need to be sorted by *x*-value before being passed to the area generator. If the area generator has a [context](#line_context), then the area is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls and this function returns void. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string is returned.
+
+# area .x ([x ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *x* is specified, sets [x0](#area_x0) to *x* and [x1](#area_x1) to null and returns this area generator. If *x* is not specified, returns the current x0 accessor.
+
+# area .x0 ([x ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *x* is specified, sets the x0 accessor to the specified function or number and returns this area generator. If *x* is not specified, returns the current x0 accessor, which defaults to:
+
+```js
+function x(d) {
+ return d[0];
+}
+```
+
+When an area is [generated](#_area), the x0 accessor will be invoked for each [defined](#area_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. The default x0 accessor assumes that the input data are two-element arrays of numbers. If your data are in a different format, or if you wish to transform the data before rendering, then you should specify a custom accessor. For example, if `x` is a [time scale](https://github.com/d3/d3-scale#time-scales) and `y` is a [linear scale](https://github.com/d3/d3-scale#linear-scales):
+
+```js
+const data = [
+ {date: new Date(2007, 3, 24), value: 93.24},
+ {date: new Date(2007, 3, 25), value: 95.35},
+ {date: new Date(2007, 3, 26), value: 98.84},
+ {date: new Date(2007, 3, 27), value: 99.92},
+ {date: new Date(2007, 3, 30), value: 99.80},
+ {date: new Date(2007, 4, 1), value: 99.47},
+ …
+];
+
+const area = d3.area()
+ .x(d => x(d.date))
+ .y1(d => y(d.value))
+ .y0(y(0));
+```
+
+# area .x1 ([x ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *x* is specified, sets the x1 accessor to the specified function or number and returns this area generator. If *x* is not specified, returns the current x1 accessor, which defaults to null, indicating that the previously-computed [x0](#area_x0) value should be reused for the x1 value.
+
+When an area is [generated](#_area), the x1 accessor will be invoked for each [defined](#area_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. See [*area*.x0](#area_x0) for more information.
+
+# area .y ([y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *y* is specified, sets [y0](#area_y0) to *y* and [y1](#area_y1) to null and returns this area generator. If *y* is not specified, returns the current y0 accessor.
+
+# area .y0 ([y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *y* is specified, sets the y0 accessor to the specified function or number and returns this area generator. If *y* is not specified, returns the current y0 accessor, which defaults to:
+
+```js
+function y() {
+ return 0;
+}
+```
+
+When an area is [generated](#_area), the y0 accessor will be invoked for each [defined](#area_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. See [*area*.x0](#area_x0) for more information.
+
+# area .y1 ([y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *y* is specified, sets the y1 accessor to the specified function or number and returns this area generator. If *y* is not specified, returns the current y1 accessor, which defaults to:
+
+```js
+function y(d) {
+ return d[1];
+}
+```
+
+A null accessor is also allowed, indicating that the previously-computed [y0](#area_y0) value should be reused for the y1 value. When an area is [generated](#_area), the y1 accessor will be invoked for each [defined](#area_defined) element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. See [*area*.x0](#area_x0) for more information.
+
+# area .defined ([defined ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *defined* is specified, sets the defined accessor to the specified function or boolean and returns this area generator. If *defined* is not specified, returns the current defined accessor, which defaults to:
+
+```js
+function defined() {
+ return true;
+}
+```
+
+The default accessor thus assumes that the input data is always defined. When an area is [generated](#_area), the defined accessor will be invoked for each element in the input data array, being passed the element `d`, the index `i`, and the array `data` as three arguments. If the given element is defined (*i.e.*, if the defined accessor returns a truthy value for this element), the [x0](#area_x0), [x1](#area_x1), [y0](#area_y0) and [y1](#area_y1) accessors will subsequently be evaluated and the point will be added to the current area segment. Otherwise, the element will be skipped, the current area segment will be ended, and a new area segment will be generated for the next defined point. As a result, the generated area may have several discrete segments. For example:
+
+[# area .curve ([curve ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *curve* is specified, sets the [curve factory](#curves) and returns this area generator. If *curve* is not specified, returns the current curve factory, which defaults to [curveLinear](#curveLinear).
+
+# area .context ([context ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+If *context* is specified, sets the context and returns this area generator. If *context* is not specified, returns the current context, which defaults to null. If the context is not null, then the [generated area](#_area) is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string representing the generated area is returned.
+
+# area .lineX0 () · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+# area .lineY0 () · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+Returns a new [line generator](#lines) that has this area generator’s current [defined accessor](#area_defined), [curve](#area_curve) and [context](#area_context). The line’s [*x*-accessor](#line_x) is this area’s [*x0*-accessor](#area_x0), and the line’s [*y*-accessor](#line_y) is this area’s [*y0*-accessor](#area_y0).
+
+# area .lineX1 () · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+Returns a new [line generator](#lines) that has this area generator’s current [defined accessor](#area_defined), [curve](#area_curve) and [context](#area_context). The line’s [*x*-accessor](#line_x) is this area’s [*x1*-accessor](#area_x1), and the line’s [*y*-accessor](#line_y) is this area’s [*y0*-accessor](#area_y0).
+
+# area .lineY1 () · [Source](https://github.com/d3/d3-shape/blob/main/src/area.js)
+
+Returns a new [line generator](#lines) that has this area generator’s current [defined accessor](#area_defined), [curve](#area_curve) and [context](#area_context). The line’s [*x*-accessor](#line_x) is this area’s [*x0*-accessor](#area_x0), and the line’s [*y*-accessor](#line_y) is this area’s [*y1*-accessor](#area_y1).
+
+# d3.areaRadial () · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+# areaRadial (data )
+
+Equivalent to [*area*](#_area).
+
+# areaRadial .angle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.x](#area_x), except the accessor returns the angle in radians, with 0 at -*y* (12 o’clock).
+
+# areaRadial .startAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.x0](#area_x0), except the accessor returns the angle in radians, with 0 at -*y* (12 o’clock). Note: typically [angle](#areaRadial_angle) is used instead of setting separate start and end angles.
+
+# areaRadial .endAngle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.x1](#area_x1), except the accessor returns the angle in radians, with 0 at -*y* (12 o’clock). Note: typically [angle](#areaRadial_angle) is used instead of setting separate start and end angles.
+
+# areaRadial .radius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.y](#area_y), except the accessor returns the radius: the distance from the origin ⟨0,0⟩.
+
+# areaRadial .innerRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.y0](#area_y0), except the accessor returns the radius: the distance from the origin ⟨0,0⟩.
+
+# areaRadial .outerRadius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.y1](#area_y1), except the accessor returns the radius: the distance from the origin ⟨0,0⟩.
+
+# areaRadial .defined ([defined ])
+
+Equivalent to [*area*.defined](#area_defined).
+
+# areaRadial .curve ([curve ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Equivalent to [*area*.curve](#area_curve). Note that [curveMonotoneX](#curveMonotoneX) or [curveMonotoneY](#curveMonotoneY) are not recommended for radial areas because they assume that the data is monotonic in *x* or *y*, which is typically untrue of radial areas.
+
+# areaRadial .context ([context ])
+
+Equivalent to [*line*.context](#line_context).
+
+# areaRadial .lineStartAngle () · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+# areaRadial .lineInnerRadius () · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Returns a new [radial line generator](#lineRadial) that has this radial area generator’s current [defined accessor](#areaRadial_defined), [curve](#areaRadial_curve) and [context](#areaRadial_context). The line’s [angle accessor](#lineRadial_angle) is this area’s [start angle accessor](#areaRadial_startAngle), and the line’s [radius accessor](#lineRadial_radius) is this area’s [inner radius accessor](#areaRadial_innerRadius).
+
+# areaRadial .lineEndAngle () · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Returns a new [radial line generator](#lineRadial) that has this radial area generator’s current [defined accessor](#areaRadial_defined), [curve](#areaRadial_curve) and [context](#areaRadial_context). The line’s [angle accessor](#lineRadial_angle) is this area’s [end angle accessor](#areaRadial_endAngle), and the line’s [radius accessor](#lineRadial_radius) is this area’s [inner radius accessor](#areaRadial_innerRadius).
+
+# areaRadial .lineOuterRadius () · [Source](https://github.com/d3/d3-shape/blob/main/src/areaRadial.js)
+
+Returns a new [radial line generator](#lineRadial) that has this radial area generator’s current [defined accessor](#areaRadial_defined), [curve](#areaRadial_curve) and [context](#areaRadial_context). The line’s [angle accessor](#lineRadial_angle) is this area’s [start angle accessor](#areaRadial_startAngle), and the line’s [radius accessor](#lineRadial_radius) is this area’s [outer radius accessor](#areaRadial_outerRadius).
+
+### Curves
+
+While [lines](#lines) are defined as a sequence of two-dimensional [*x*, *y*] points, and [areas](#areas) are similarly defined by a topline and a baseline, there remains the task of transforming this discrete representation into a continuous shape: *i.e.*, how to interpolate between the points. A variety of curves are provided for this purpose.
+
+Curves are typically not constructed or used directly, instead being passed to [*line*.curve](#line_curve) and [*area*.curve](#area_curve). For example:
+
+```js
+const line = d3.line(d => d.date, d => d.value)
+ .curve(d3.curveCatmullRom.alpha(0.5));
+```
+
+# d3.curveBasis (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/basis.js)
+
+# d3.curveBasisClosed (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/basisClosed.js)
+
+# d3.curveBasisOpen (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/basisOpen.js)
+
+# d3.curveBumpX (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/bump.js)
+
+# d3.curveBumpY (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/bump.js)
+
+# d3.curveBundle (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/bundle.js)
+
+# bundle .beta (beta ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/bundle.js)
+
+Returns a bundle curve with the specified *beta* in the range [0, 1], representing the bundle strength. If *beta* equals zero, a straight line between the first and last point is produced; if *beta* equals one, a standard [basis](#basis) spline is produced. For example:
+
+```js
+const line = d3.line().curve(d3.curveBundle.beta(0.5));
+```
+
+# d3.curveCardinal (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/cardinal.js)
+
+# d3.curveCardinalClosed (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/cardinalClosed.js)
+
+# d3.curveCardinalOpen (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/cardinalOpen.js)
+
+# cardinal .tension (tension ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/cardinalOpen.js)
+
+Returns a cardinal curve with the specified *tension* in the range [0, 1]. The *tension* determines the length of the tangents: a *tension* of one yields all zero tangents, equivalent to [curveLinear](#curveLinear); a *tension* of zero produces a uniform [Catmull–Rom](#curveCatmullRom) spline. For example:
+
+```js
+const line = d3.line().curve(d3.curveCardinal.tension(0.5));
+```
+
+# d3.curveCatmullRom (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/catmullRom.js)
+
+# d3.curveCatmullRomClosed (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/catmullRomClosed.js)
+
+# d3.curveCatmullRomOpen (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/catmullRomOpen.js)
+
+# catmullRom .alpha (alpha ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/catmullRom.js)
+
+Returns a cubic Catmull–Rom curve with the specified *alpha* in the range [0, 1]. If *alpha* is zero, produces a uniform spline, equivalent to [curveCardinal](#curveCardinal) with a tension of zero; if *alpha* is one, produces a chordal spline; if *alpha* is 0.5, produces a [centripetal spline](https://en.wikipedia.org/wiki/Centripetal_Catmull–Rom_spline). Centripetal splines are recommended to avoid self-intersections and overshoot. For example:
+
+```js
+const line = d3.line().curve(d3.curveCatmullRom.alpha(0.5));
+```
+
+# d3.curveLinear (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/linear.js)
+
+# d3.curveLinearClosed (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/linearClosed.js)
+
+# d3.curveMonotoneX (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/monotone.js)
+
+# d3.curveMonotoneY (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/monotone.js)
+
+# d3.curveNatural (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/natural.js)
+
+# d3.curveStep (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+# d3.curveStepAfter (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+# d3.curveStepBefore (context ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+# curve .areaStart () · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js#L7)
+
+Indicates the start of a new area segment. Each area segment consists of exactly two [line segments](#curve_lineStart): the topline, followed by the baseline, with the baseline points in reverse order.
+
+# curve .areaEnd () · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+Indicates the end of the current area segment.
+
+# curve .lineStart () · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+Indicates the start of a new line segment. Zero or more [points](#curve_point) will follow.
+
+# curve .lineEnd () · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+Indicates the end of the current line segment.
+
+# curve .point (x , y ) · [Source](https://github.com/d3/d3-shape/blob/main/src/curve/step.js)
+
+Indicates a new point in the current line segment with the given *x*- and *y*-values.
+
+### Links
+
+[# d3.link (curve ) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Returns a new [link generator](#_link) using the specified curve . For example, to visualize [links](https://github.com/d3/d3-hierarchy/blob/master/README.md#node_links) in a [tree diagram](https://github.com/d3/d3-hierarchy/blob/master/README.md#tree) rooted on the top edge of the display, you might say:
+
+```js
+const link = d3.link(d3.curveBumpY)
+ .x(d => d.x)
+ .y(d => d.y);
+```
+
+# d3.linkVertical () · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Shorthand for [d3.link](#link) with [d3.curveBumpY](#curveBumpY); suitable for visualizing [links](https://github.com/d3/d3-hierarchy/blob/master/README.md#node_links) in a [tree diagram](https://github.com/d3/d3-hierarchy/blob/master/README.md#tree) rooted on the top edge of the display. Equivalent to:
+
+```js
+const link = d3.link(d3.curveBumpY);
+```
+
+# d3.linkHorizontal () · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Shorthand for [d3.link](#link) with [d3.curveBumpX](#curveBumpX); suitable for visualizing [links](https://github.com/d3/d3-hierarchy/blob/master/README.md#node_links) in a [tree diagram](https://github.com/d3/d3-hierarchy/blob/master/README.md#tree) rooted on the left edge of the display. Equivalent to:
+
+```js
+const link = d3.link(d3.curveBumpX);
+```
+
+# link (arguments… ) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Generates a link for the given *arguments*. The *arguments* are arbitrary; they are simply propagated to the link generator’s accessor functions along with the `this` object. For example, with the default settings, an object expected:
+
+```js
+link({
+ source: [100, 100],
+ target: [300, 300]
+});
+```
+
+# link .source ([source ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+If *source* is specified, sets the source accessor to the specified function and returns this link generator. If *source* is not specified, returns the current source accessor, which defaults to:
+
+```js
+function source(d) {
+ return d.source;
+}
+```
+
+# link .target ([target ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+If *target* is specified, sets the target accessor to the specified function and returns this link generator. If *target* is not specified, returns the current target accessor, which defaults to:
+
+```js
+function target(d) {
+ return d.target;
+}
+```
+
+# link .x ([x ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+If *x* is specified, sets the *x*-accessor to the specified function or number and returns this link generator. If *x* is not specified, returns the current *x*-accessor, which defaults to:
+
+```js
+function x(d) {
+ return d[0];
+}
+```
+
+# link .y ([y ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+If *y* is specified, sets the *y*-accessor to the specified function or number and returns this link generator. If *y* is not specified, returns the current *y*-accessor, which defaults to:
+
+```js
+function y(d) {
+ return d[1];
+}
+```
+
+# link .context ([context ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+If *context* is specified, sets the context and returns this link generator. If *context* is not specified, returns the current context, which defaults to null. If the context is not null, then the [generated link](#_link) is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string representing the generated link is returned. See also [d3-path](https://github.com/d3/d3-path).
+
+# d3.linkRadial () · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Returns a new [link generator](#_link) with radial tangents. For example, to visualize [links](https://github.com/d3/d3-hierarchy/blob/master/README.md#node_links) in a [tree diagram](https://github.com/d3/d3-hierarchy/blob/master/README.md#tree) rooted in the center of the display, you might say:
+
+```js
+const link = d3.linkRadial()
+ .angle(d => d.x)
+ .radius(d => d.y);
+```
+
+# linkRadial .angle ([angle ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Equivalent to [*link*.x](#link_x), except the accessor returns the angle in radians, with 0 at -*y* (12 o’clock).
+
+# linkRadial .radius ([radius ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/link.js)
+
+Equivalent to [*link*.y](#link_y), except the accessor returns the radius: the distance from the origin ⟨0,0⟩.
+
+### Symbols
+
+# d3.symbol ([type ][, size ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js), [Examples](https://observablehq.com/@d3/fitted-symbols)
+
+Constructs a new symbol generator of the specified [type](#symbol_type) and [size](#symbol_size). If not specified, *type* defaults to a circle, and *size* defaults to 64.
+
+# symbol (arguments …) · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+Generates a symbol for the given *arguments*. The *arguments* are arbitrary; they are simply propagated to the symbol generator’s accessor functions along with the `this` object. For example, with the default settings, no arguments are needed to produce a circle with area 64 square pixels. If the symbol generator has a [context](#symbol_context), then the symbol is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls and this function returns void. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string is returned.
+
+# symbol .type ([type ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+If *type* is specified, sets the symbol type to the specified function or symbol type and returns this symbol generator. If *type* is a function, the symbol generator’s arguments and *this* are passed through. (See [*selection*.attr](https://github.com/d3/d3-selection/blob/master/README.md#selection_attr) if you are using d3-selection.) If *type* is not specified, returns the current symbol type accessor, which defaults to:
+
+```js
+function type() {
+ return circle;
+}
+```
+
+See [symbolsFill](#symbolsFill) and [symbolsStroke](#symbolsStroke) for built-in symbol types. To implement a custom symbol type, pass an object that implements [*symbolType*.draw](#symbolType_draw).
+
+# symbol .size ([size ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+If *size* is specified, sets the size to the specified function or number and returns this symbol generator. If *size* is a function, the symbol generator’s arguments and *this* are passed through. (See [*selection*.attr](https://github.com/d3/d3-selection/blob/master/README.md#selection_attr) if you are using d3-selection.) If *size* is not specified, returns the current size accessor, which defaults to:
+
+```js
+function size() {
+ return 64;
+}
+```
+
+Specifying the size as a function is useful for constructing a scatterplot with a size encoding. If you wish to scale the symbol to fit a given bounding box, rather than by area, try [SVG’s getBBox](https://observablehq.com/d/1fac2626b9e1b65f).
+
+# symbol .context ([context ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+If *context* is specified, sets the context and returns this symbol generator. If *context* is not specified, returns the current context, which defaults to null. If the context is not null, then the [generated symbol](#_symbol) is rendered to this context as a sequence of [path method](http://www.w3.org/TR/2dcontext/#canvaspathmethods) calls. Otherwise, a [path data](http://www.w3.org/TR/SVG/paths.html#PathData) string representing the generated symbol is returned.
+
+# d3.symbolsFill · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+An array containing a set of symbol types designed for filling: [circle](#symbolCircle), [cross](#symbolCross), [diamond](#symbolDiamond), [square](#symbolSquare), [star](#symbolStar), [triangle](#symbolTriangle), and [wye](#symbolWye). Useful for constructing the range of an [ordinal scale](https://github.com/d3/d3-scale#ordinal-scales) should you wish to use a shape encoding for categorical data.
+
+# d3.symbolsStroke · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol.js)
+
+An array containing a set of symbol types designed for stroking: [circle](#symbolCircle), [plus](#symbolPlus), [x](#symbolX), [triangle2](#symbolTriangle2), [asterisk](#symbolAsterisk), [square2](#symbolSquare2), and [diamond2](#symbolDiamond2). Useful for constructing the range of an [ordinal scale](https://github.com/d3/d3-scale#ordinal-scales) should you wish to use a shape encoding for categorical data.
+
+# d3.symbolAsterisk · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/asterisk.js)
+
+The asterisk symbol type; intended for stroking.
+
+# d3.symbolCircle · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/circle.js)
+
+The circle symbol type; intended for either filling or stroking.
+
+# d3.symbolCross · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/cross.js)
+
+The Greek cross symbol type, with arms of equal length; intended for filling.
+
+# d3.symbolDiamond · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/diamond.js)
+
+The rhombus symbol type; intended for filling.
+
+# d3.symbolDiamond2 · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/diamond.js)
+
+The rotated square symbol type; intended for stroking.
+
+# d3.symbolPlus · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/plus.js)
+
+The plus symbol type; intended for stroking.
+
+# d3.symbolSquare · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/square.js)
+
+The square symbol type; intended for filling.
+
+# d3.symbolSquare2 · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/square2.js)
+
+The square2 symbol type; intended for stroking.
+
+# d3.symbolStar · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/star.js)
+
+The pentagonal star (pentagram) symbol type; intended for filling.
+
+# d3.symbolTriangle · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/triangle.js)
+
+The up-pointing triangle symbol type; intended for filling.
+
+# d3.symbolTriangle2 · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/triangle2.js)
+
+The up-pointing triangle symbol type; intended for stroking.
+
+# d3.symbolWye · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/wye.js)
+
+The Y-shape symbol type; intended for filling.
+
+# d3.symbolX · [Source](https://github.com/d3/d3-shape/blob/main/src/symbol/x.js)
+
+The X-shape symbol type; intended for stroking.
+
+# d3.pointRadial (angle , radius ) · [Source](https://github.com/d3/d3-shape/blob/main/src/pointRadial.js), [Examples](https://observablehq.com/@d3/radial-area-chart)
+
+Returns the point [x , y ] for the given *angle* in radians, with 0 at -*y* (12 o’clock) and positive angles proceeding clockwise, and the given *radius*.
+
+### Custom Symbol Types
+
+Symbol types are typically not used directly, instead being passed to [*symbol*.type](#symbol_type). However, you can define your own symbol type implementation should none of the built-in types satisfy your needs using the following interface. You can also use this low-level interface with a built-in symbol type as an alternative to the symbol generator.
+
+# symbolType .draw (context , size )
+
+Renders this symbol type to the specified *context* with the specified *size* in square pixels. The *context* implements the [CanvasPathMethods](http://www.w3.org/TR/2dcontext/#canvaspathmethods) interface. (Note that this is a subset of the CanvasRenderingContext2D interface!)
+
+### Stacks
+
+[# d3.stack () · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+Constructs a new stack generator with the default settings.
+
+# stack (data [, arguments… ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+Generates a stack for the given array of *data*, returning an array representing each series. Any additional *arguments* are arbitrary; they are simply propagated to accessors along with the `this` object.
+
+The series are determined by the [keys accessor](#stack_keys); each series *i* in the returned array corresponds to the *i*th key. Each series is an array of points, where each point *j* corresponds to the *j*th element in the input *data*. Lastly, each point is represented as an array [*y0*, *y1*] where *y0* is the lower value (baseline) and *y1* is the upper value (topline); the difference between *y0* and *y1* corresponds to the computed [value](#stack_value) for this point. The key for each series is available as *series*.key, and the [index](#stack_order) as *series*.index. The input data element for each point is available as *point*.data.
+
+For example, consider the following table representing monthly sales of fruits:
+
+Month | Apples | Bananas | Cherries | Dates
+--------|--------|---------|----------|-------
+ 1/2015 | 3840 | 1920 | 960 | 400
+ 2/2015 | 1600 | 1440 | 960 | 400
+ 3/2015 | 640 | 960 | 640 | 400
+ 4/2015 | 320 | 480 | 640 | 400
+
+This might be represented in JavaScript as an array of objects:
+
+```js
+const data = [
+ {month: new Date(2015, 0, 1), apples: 3840, bananas: 1920, cherries: 960, dates: 400},
+ {month: new Date(2015, 1, 1), apples: 1600, bananas: 1440, cherries: 960, dates: 400},
+ {month: new Date(2015, 2, 1), apples: 640, bananas: 960, cherries: 640, dates: 400},
+ {month: new Date(2015, 3, 1), apples: 320, bananas: 480, cherries: 640, dates: 400}
+];
+```
+
+To produce a stack for this data:
+
+```js
+const stack = d3.stack()
+ .keys(["apples", "bananas", "cherries", "dates"])
+ .order(d3.stackOrderNone)
+ .offset(d3.stackOffsetNone);
+
+const series = stack(data);
+```
+
+The resulting array has one element per *series*. Each series has one point per month, and each point has a lower and upper value defining the baseline and topline:
+
+```js
+[
+ [[ 0, 3840], [ 0, 1600], [ 0, 640], [ 0, 320]], // apples
+ [[3840, 5760], [1600, 3040], [ 640, 1600], [ 320, 800]], // bananas
+ [[5760, 6720], [3040, 4000], [1600, 2240], [ 800, 1440]], // cherries
+ [[6720, 7120], [4000, 4400], [2240, 2640], [1440, 1840]], // dates
+]
+```
+
+Each series in then typically passed to an [area generator](#areas) to render an area chart, or used to construct rectangles for a bar chart.
+
+# stack .keys ([keys ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+If *keys* is specified, sets the keys accessor to the specified function or array and returns this stack generator. If *keys* is not specified, returns the current keys accessor, which defaults to the empty array. A series (layer) is [generated](#_stack) for each key. Keys are typically strings, but they may be arbitrary values. The series’ key is passed to the [value accessor](#stack_value), along with each data point, to compute the point’s value.
+
+# stack .value ([value ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+If *value* is specified, sets the value accessor to the specified function or number and returns this stack generator. If *value* is not specified, returns the current value accessor, which defaults to:
+
+```js
+function value(d, key) {
+ return d[key];
+}
+```
+
+Thus, by default the stack generator assumes that the input data is an array of objects, with each object exposing named properties with numeric values; see [*stack*](#_stack) for an example.
+
+# stack .order ([order ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+If *order* is specified, sets the order accessor to the specified function or array and returns this stack generator. If *order* is not specified, returns the current order accessor, which defaults to [stackOrderNone](#stackOrderNone); this uses the order given by the [key accessor](#stack_key). See [stack orders](#stack-orders) for the built-in orders.
+
+If *order* is a function, it is passed the generated series array and must return an array of numeric indexes representing the stack order. For example, the default order is defined as:
+
+```js
+function orderNone(series) {
+ let n = series.length;
+ const o = new Array(n);
+ while (--n >= 0) o[n] = n;
+ return o;
+}
+```
+
+The stack order is computed prior to the [offset](#stack_offset); thus, the lower value for all points is zero at the time the order is computed. The index attribute for each series is also not set until after the order is computed.
+
+# stack .offset ([offset ]) · [Source](https://github.com/d3/d3-shape/blob/main/src/stack.js)
+
+If *offset* is specified, sets the offset accessor to the specified function and returns this stack generator. If *offset* is not specified, returns the current offset acccesor, which defaults to [stackOffsetNone](#stackOffsetNone); this uses a zero baseline. See [stack offsets](#stack-offsets) for the built-in offsets.
+
+The offset function is passed the generated series array and the order index array; it is then responsible for updating the lower and upper values in the series array. For example, the default offset is defined as:
+
+```js
+function offsetNone(series, order) {
+ if (!((n = series.length) > 1)) return;
+ for (let i = 1, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) {
+ s0 = s1, s1 = series[order[i]];
+ for (let j = 0; j < m; ++j) {
+ s1[j][1] += s1[j][0] = s0[j][1];
+ }
+ }
+}
+```
+
+### Stack Orders
+
+Stack orders are typically not used directly, but are instead passed to [*stack*.order](#stack_order).
+
+# d3.stackOrderAppearance (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/appearance.js)
+
+Returns a series order such that the earliest series (according to the maximum value) is at the bottom.
+
+# d3.stackOrderAscending (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/ascending.js)
+
+Returns a series order such that the smallest series (according to the sum of values) is at the bottom.
+
+# d3.stackOrderDescending (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/descending.js)
+
+Returns a series order such that the largest series (according to the sum of values) is at the bottom.
+
+# d3.stackOrderInsideOut (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/insideOut.js)
+
+Returns a series order such that the earliest series (according to the maximum value) are on the inside and the later series are on the outside. This order is recommended for streamgraphs in conjunction with the [wiggle offset](#stackOffsetWiggle). See [Stacked Graphs—Geometry & Aesthetics](http://leebyron.com/streamgraph/) by Byron & Wattenberg for more information.
+
+# d3.stackOrderNone (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/none.js)
+
+Returns the given series order [0, 1, … *n* - 1] where *n* is the number of elements in *series*. Thus, the stack order is given by the [key accessor](#stack_keys).
+
+# d3.stackOrderReverse (series ) · [Source](https://github.com/d3/d3-shape/blob/main/src/order/reverse.js)
+
+Returns the reverse of the given series order [*n* - 1, *n* - 2, … 0] where *n* is the number of elements in *series*. Thus, the stack order is given by the reverse of the [key accessor](#stack_keys).
+
+### Stack Offsets
+
+Stack offsets are typically not used directly, but are instead passed to [*stack*.offset](#stack_offset).
+
+# d3.stackOffsetExpand (series , order ) · [Source](https://github.com/d3/d3-shape/blob/main/src/offset/expand.js)
+
+Applies a zero baseline and normalizes the values for each point such that the topline is always one.
+
+# d3.stackOffsetDiverging (series , order ) · [Source](https://github.com/d3/d3-shape/blob/main/src/offset/diverging.js)
+
+Positive values are stacked above zero, negative values are [stacked below zero](https://bl.ocks.org/mbostock/b5935342c6d21928111928401e2c8608), and zero values are stacked at zero.
+
+# d3.stackOffsetNone (series , order ) · [Source](https://github.com/d3/d3-shape/blob/main/src/offset/none.js)
+
+Applies a zero baseline.
+
+# d3.stackOffsetSilhouette (series , order ) · [Source](https://github.com/d3/d3-shape/blob/main/src/offset/silhouette.js)
+
+Shifts the baseline down such that the center of the streamgraph is always at zero.
+
+# d3.stackOffsetWiggle (series , order ) · [Source](https://github.com/d3/d3-shape/blob/main/src/offset/wiggle.js)
+
+Shifts the baseline so as to minimize the weighted wiggle of layers. This offset is recommended for streamgraphs in conjunction with the [inside-out order](#stackOrderInsideOut). See [Stacked Graphs—Geometry & Aesthetics](http://leebyron.com/streamgraph/) by Bryon & Wattenberg for more information.
diff --git a/node_modules/d3-shape/dist/d3-shape.js b/node_modules/d3-shape/dist/d3-shape.js
new file mode 100644
index 00000000..b82ec7fe
--- /dev/null
+++ b/node_modules/d3-shape/dist/d3-shape.js
@@ -0,0 +1,2112 @@
+// https://d3js.org/d3-shape/ v3.1.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-path')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-path'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+})(this, (function (exports, d3Path) { 'use strict';
+
+function constant(x) {
+ return function constant() {
+ return x;
+ };
+}
+
+const abs = Math.abs;
+const atan2 = Math.atan2;
+const cos = Math.cos;
+const max = Math.max;
+const min = Math.min;
+const sin = Math.sin;
+const sqrt = Math.sqrt;
+
+const epsilon = 1e-12;
+const pi = Math.PI;
+const halfPi = pi / 2;
+const tau = 2 * pi;
+
+function acos(x) {
+ return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);
+}
+
+function asin(x) {
+ return x >= 1 ? halfPi : x <= -1 ? -halfPi : Math.asin(x);
+}
+
+function arcInnerRadius(d) {
+ return d.innerRadius;
+}
+
+function arcOuterRadius(d) {
+ return d.outerRadius;
+}
+
+function arcStartAngle(d) {
+ return d.startAngle;
+}
+
+function arcEndAngle(d) {
+ return d.endAngle;
+}
+
+function arcPadAngle(d) {
+ return d && d.padAngle; // Note: optional!
+}
+
+function intersect(x0, y0, x1, y1, x2, y2, x3, y3) {
+ var x10 = x1 - x0, y10 = y1 - y0,
+ x32 = x3 - x2, y32 = y3 - y2,
+ t = y32 * x10 - x32 * y10;
+ if (t * t < epsilon) return;
+ t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t;
+ return [x0 + t * x10, y0 + t * y10];
+}
+
+// Compute perpendicular offset line of length rc.
+// http://mathworld.wolfram.com/Circle-LineIntersection.html
+function cornerTangents(x0, y0, x1, y1, r1, rc, cw) {
+ var x01 = x0 - x1,
+ y01 = y0 - y1,
+ lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01),
+ ox = lo * y01,
+ oy = -lo * x01,
+ x11 = x0 + ox,
+ y11 = y0 + oy,
+ x10 = x1 + ox,
+ y10 = y1 + oy,
+ x00 = (x11 + x10) / 2,
+ y00 = (y11 + y10) / 2,
+ dx = x10 - x11,
+ dy = y10 - y11,
+ d2 = dx * dx + dy * dy,
+ r = r1 - rc,
+ D = x11 * y10 - x10 * y11,
+ d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)),
+ cx0 = (D * dy - dx * d) / d2,
+ cy0 = (-D * dx - dy * d) / d2,
+ cx1 = (D * dy + dx * d) / d2,
+ cy1 = (-D * dx + dy * d) / d2,
+ dx0 = cx0 - x00,
+ dy0 = cy0 - y00,
+ dx1 = cx1 - x00,
+ dy1 = cy1 - y00;
+
+ // Pick the closer of the two intersection points.
+ // TODO Is there a faster way to determine which intersection to use?
+ if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+
+ return {
+ cx: cx0,
+ cy: cy0,
+ x01: -ox,
+ y01: -oy,
+ x11: cx0 * (r1 / r - 1),
+ y11: cy0 * (r1 / r - 1)
+ };
+}
+
+function arc() {
+ var innerRadius = arcInnerRadius,
+ outerRadius = arcOuterRadius,
+ cornerRadius = constant(0),
+ padRadius = null,
+ startAngle = arcStartAngle,
+ endAngle = arcEndAngle,
+ padAngle = arcPadAngle,
+ context = null;
+
+ function arc() {
+ var buffer,
+ r,
+ r0 = +innerRadius.apply(this, arguments),
+ r1 = +outerRadius.apply(this, arguments),
+ a0 = startAngle.apply(this, arguments) - halfPi,
+ a1 = endAngle.apply(this, arguments) - halfPi,
+ da = abs(a1 - a0),
+ cw = a1 > a0;
+
+ if (!context) context = buffer = d3Path.path();
+
+ // Ensure that the outer radius is always larger than the inner radius.
+ if (r1 < r0) r = r1, r1 = r0, r0 = r;
+
+ // Is it a point?
+ if (!(r1 > epsilon)) context.moveTo(0, 0);
+
+ // Or is it a circle or annulus?
+ else if (da > tau - epsilon) {
+ context.moveTo(r1 * cos(a0), r1 * sin(a0));
+ context.arc(0, 0, r1, a0, a1, !cw);
+ if (r0 > epsilon) {
+ context.moveTo(r0 * cos(a1), r0 * sin(a1));
+ context.arc(0, 0, r0, a1, a0, cw);
+ }
+ }
+
+ // Or is it a circular or annular sector?
+ else {
+ var a01 = a0,
+ a11 = a1,
+ a00 = a0,
+ a10 = a1,
+ da0 = da,
+ da1 = da,
+ ap = padAngle.apply(this, arguments) / 2,
+ rp = (ap > epsilon) && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)),
+ rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)),
+ rc0 = rc,
+ rc1 = rc,
+ t0,
+ t1;
+
+ // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0.
+ if (rp > epsilon) {
+ var p0 = asin(rp / r0 * sin(ap)),
+ p1 = asin(rp / r1 * sin(ap));
+ if ((da0 -= p0 * 2) > epsilon) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0;
+ else da0 = 0, a00 = a10 = (a0 + a1) / 2;
+ if ((da1 -= p1 * 2) > epsilon) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1;
+ else da1 = 0, a01 = a11 = (a0 + a1) / 2;
+ }
+
+ var x01 = r1 * cos(a01),
+ y01 = r1 * sin(a01),
+ x10 = r0 * cos(a10),
+ y10 = r0 * sin(a10);
+
+ // Apply rounded corners?
+ if (rc > epsilon) {
+ var x11 = r1 * cos(a11),
+ y11 = r1 * sin(a11),
+ x00 = r0 * cos(a00),
+ y00 = r0 * sin(a00),
+ oc;
+
+ // Restrict the corner radius according to the sector angle.
+ if (da < pi && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) {
+ var ax = x01 - oc[0],
+ ay = y01 - oc[1],
+ bx = x11 - oc[0],
+ by = y11 - oc[1],
+ kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2),
+ lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+ rc0 = min(rc, (r0 - lc) / (kc - 1));
+ rc1 = min(rc, (r1 - lc) / (kc + 1));
+ }
+ }
+
+ // Is the sector collapsed to a line?
+ if (!(da1 > epsilon)) context.moveTo(x01, y01);
+
+ // Does the sector’s outer ring have rounded corners?
+ else if (rc1 > epsilon) {
+ t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw);
+ t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw);
+
+ context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+ // Have the corners merged?
+ if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+ // Otherwise, draw the two corners and the ring.
+ else {
+ context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+ context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw);
+ context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+ }
+ }
+
+ // Or is the outer ring just a circular arc?
+ else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw);
+
+ // Is there no inner ring, and it’s a circular sector?
+ // Or perhaps it’s an annular sector collapsed due to padding?
+ if (!(r0 > epsilon) || !(da0 > epsilon)) context.lineTo(x10, y10);
+
+ // Does the sector’s inner ring (or point) have rounded corners?
+ else if (rc0 > epsilon) {
+ t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw);
+ t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw);
+
+ context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+ // Have the corners merged?
+ if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+ // Otherwise, draw the two corners and the ring.
+ else {
+ context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+ context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw);
+ context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+ }
+ }
+
+ // Or is the inner ring just a circular arc?
+ else context.arc(0, 0, r0, a10, a00, cw);
+ }
+
+ context.closePath();
+
+ if (buffer) return context = null, buffer + "" || null;
+ }
+
+ arc.centroid = function() {
+ var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2,
+ a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2;
+ return [cos(a) * r, sin(a) * r];
+ };
+
+ arc.innerRadius = function(_) {
+ return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant(+_), arc) : innerRadius;
+ };
+
+ arc.outerRadius = function(_) {
+ return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant(+_), arc) : outerRadius;
+ };
+
+ arc.cornerRadius = function(_) {
+ return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant(+_), arc) : cornerRadius;
+ };
+
+ arc.padRadius = function(_) {
+ return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant(+_), arc) : padRadius;
+ };
+
+ arc.startAngle = function(_) {
+ return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), arc) : startAngle;
+ };
+
+ arc.endAngle = function(_) {
+ return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), arc) : endAngle;
+ };
+
+ arc.padAngle = function(_) {
+ return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), arc) : padAngle;
+ };
+
+ arc.context = function(_) {
+ return arguments.length ? ((context = _ == null ? null : _), arc) : context;
+ };
+
+ return arc;
+}
+
+var slice = Array.prototype.slice;
+
+function array(x) {
+ return typeof x === "object" && "length" in x
+ ? x // Array, TypedArray, NodeList, array-like
+ : Array.from(x); // Map, Set, iterable, string, or anything else
+}
+
+function Linear(context) {
+ this._context = context;
+}
+
+Linear.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; // falls through
+ default: this._context.lineTo(x, y); break;
+ }
+ }
+};
+
+function curveLinear(context) {
+ return new Linear(context);
+}
+
+function x$1(p) {
+ return p[0];
+}
+
+function y(p) {
+ return p[1];
+}
+
+function line(x, y$1) {
+ var defined = constant(true),
+ context = null,
+ curve = curveLinear,
+ output = null;
+
+ x = typeof x === "function" ? x : (x === undefined) ? x$1 : constant(x);
+ y$1 = typeof y$1 === "function" ? y$1 : (y$1 === undefined) ? y : constant(y$1);
+
+ function line(data) {
+ var i,
+ n = (data = array(data)).length,
+ d,
+ defined0 = false,
+ buffer;
+
+ if (context == null) output = curve(buffer = d3Path.path());
+
+ for (i = 0; i <= n; ++i) {
+ if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+ if (defined0 = !defined0) output.lineStart();
+ else output.lineEnd();
+ }
+ if (defined0) output.point(+x(d, i, data), +y$1(d, i, data));
+ }
+
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ line.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), line) : x;
+ };
+
+ line.y = function(_) {
+ return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant(+_), line) : y$1;
+ };
+
+ line.defined = function(_) {
+ return arguments.length ? (defined = typeof _ === "function" ? _ : constant(!!_), line) : defined;
+ };
+
+ line.curve = function(_) {
+ return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;
+ };
+
+ line.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;
+ };
+
+ return line;
+}
+
+function area(x0, y0, y1) {
+ var x1 = null,
+ defined = constant(true),
+ context = null,
+ curve = curveLinear,
+ output = null;
+
+ x0 = typeof x0 === "function" ? x0 : (x0 === undefined) ? x$1 : constant(+x0);
+ y0 = typeof y0 === "function" ? y0 : (y0 === undefined) ? constant(0) : constant(+y0);
+ y1 = typeof y1 === "function" ? y1 : (y1 === undefined) ? y : constant(+y1);
+
+ function area(data) {
+ var i,
+ j,
+ k,
+ n = (data = array(data)).length,
+ d,
+ defined0 = false,
+ buffer,
+ x0z = new Array(n),
+ y0z = new Array(n);
+
+ if (context == null) output = curve(buffer = d3Path.path());
+
+ for (i = 0; i <= n; ++i) {
+ if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+ if (defined0 = !defined0) {
+ j = i;
+ output.areaStart();
+ output.lineStart();
+ } else {
+ output.lineEnd();
+ output.lineStart();
+ for (k = i - 1; k >= j; --k) {
+ output.point(x0z[k], y0z[k]);
+ }
+ output.lineEnd();
+ output.areaEnd();
+ }
+ }
+ if (defined0) {
+ x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data);
+ output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]);
+ }
+ }
+
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ function arealine() {
+ return line().defined(defined).curve(curve).context(context);
+ }
+
+ area.x = function(_) {
+ return arguments.length ? (x0 = typeof _ === "function" ? _ : constant(+_), x1 = null, area) : x0;
+ };
+
+ area.x0 = function(_) {
+ return arguments.length ? (x0 = typeof _ === "function" ? _ : constant(+_), area) : x0;
+ };
+
+ area.x1 = function(_) {
+ return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant(+_), area) : x1;
+ };
+
+ area.y = function(_) {
+ return arguments.length ? (y0 = typeof _ === "function" ? _ : constant(+_), y1 = null, area) : y0;
+ };
+
+ area.y0 = function(_) {
+ return arguments.length ? (y0 = typeof _ === "function" ? _ : constant(+_), area) : y0;
+ };
+
+ area.y1 = function(_) {
+ return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant(+_), area) : y1;
+ };
+
+ area.lineX0 =
+ area.lineY0 = function() {
+ return arealine().x(x0).y(y0);
+ };
+
+ area.lineY1 = function() {
+ return arealine().x(x0).y(y1);
+ };
+
+ area.lineX1 = function() {
+ return arealine().x(x1).y(y0);
+ };
+
+ area.defined = function(_) {
+ return arguments.length ? (defined = typeof _ === "function" ? _ : constant(!!_), area) : defined;
+ };
+
+ area.curve = function(_) {
+ return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve;
+ };
+
+ area.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context;
+ };
+
+ return area;
+}
+
+function descending$1(a, b) {
+ return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+}
+
+function identity(d) {
+ return d;
+}
+
+function pie() {
+ var value = identity,
+ sortValues = descending$1,
+ sort = null,
+ startAngle = constant(0),
+ endAngle = constant(tau),
+ padAngle = constant(0);
+
+ function pie(data) {
+ var i,
+ n = (data = array(data)).length,
+ j,
+ k,
+ sum = 0,
+ index = new Array(n),
+ arcs = new Array(n),
+ a0 = +startAngle.apply(this, arguments),
+ da = Math.min(tau, Math.max(-tau, endAngle.apply(this, arguments) - a0)),
+ a1,
+ p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)),
+ pa = p * (da < 0 ? -1 : 1),
+ v;
+
+ for (i = 0; i < n; ++i) {
+ if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) {
+ sum += v;
+ }
+ }
+
+ // Optionally sort the arcs by previously-computed values or by data.
+ if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); });
+ else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); });
+
+ // Compute the arcs! They are stored in the original data's order.
+ for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) {
+ j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = {
+ data: data[j],
+ index: i,
+ value: v,
+ startAngle: a0,
+ endAngle: a1,
+ padAngle: p
+ };
+ }
+
+ return arcs;
+ }
+
+ pie.value = function(_) {
+ return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), pie) : value;
+ };
+
+ pie.sortValues = function(_) {
+ return arguments.length ? (sortValues = _, sort = null, pie) : sortValues;
+ };
+
+ pie.sort = function(_) {
+ return arguments.length ? (sort = _, sortValues = null, pie) : sort;
+ };
+
+ pie.startAngle = function(_) {
+ return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), pie) : startAngle;
+ };
+
+ pie.endAngle = function(_) {
+ return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), pie) : endAngle;
+ };
+
+ pie.padAngle = function(_) {
+ return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), pie) : padAngle;
+ };
+
+ return pie;
+}
+
+var curveRadialLinear = curveRadial(curveLinear);
+
+function Radial(curve) {
+ this._curve = curve;
+}
+
+Radial.prototype = {
+ areaStart: function() {
+ this._curve.areaStart();
+ },
+ areaEnd: function() {
+ this._curve.areaEnd();
+ },
+ lineStart: function() {
+ this._curve.lineStart();
+ },
+ lineEnd: function() {
+ this._curve.lineEnd();
+ },
+ point: function(a, r) {
+ this._curve.point(r * Math.sin(a), r * -Math.cos(a));
+ }
+};
+
+function curveRadial(curve) {
+
+ function radial(context) {
+ return new Radial(curve(context));
+ }
+
+ radial._curve = curve;
+
+ return radial;
+}
+
+function lineRadial(l) {
+ var c = l.curve;
+
+ l.angle = l.x, delete l.x;
+ l.radius = l.y, delete l.y;
+
+ l.curve = function(_) {
+ return arguments.length ? c(curveRadial(_)) : c()._curve;
+ };
+
+ return l;
+}
+
+function lineRadial$1() {
+ return lineRadial(line().curve(curveRadialLinear));
+}
+
+function areaRadial() {
+ var a = area().curve(curveRadialLinear),
+ c = a.curve,
+ x0 = a.lineX0,
+ x1 = a.lineX1,
+ y0 = a.lineY0,
+ y1 = a.lineY1;
+
+ a.angle = a.x, delete a.x;
+ a.startAngle = a.x0, delete a.x0;
+ a.endAngle = a.x1, delete a.x1;
+ a.radius = a.y, delete a.y;
+ a.innerRadius = a.y0, delete a.y0;
+ a.outerRadius = a.y1, delete a.y1;
+ a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0;
+ a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1;
+ a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0;
+ a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1;
+
+ a.curve = function(_) {
+ return arguments.length ? c(curveRadial(_)) : c()._curve;
+ };
+
+ return a;
+}
+
+function pointRadial(x, y) {
+ return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)];
+}
+
+class Bump {
+ constructor(context, x) {
+ this._context = context;
+ this._x = x;
+ }
+ areaStart() {
+ this._line = 0;
+ }
+ areaEnd() {
+ this._line = NaN;
+ }
+ lineStart() {
+ this._point = 0;
+ }
+ lineEnd() {
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ }
+ point(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: {
+ this._point = 1;
+ if (this._line) this._context.lineTo(x, y);
+ else this._context.moveTo(x, y);
+ break;
+ }
+ case 1: this._point = 2; // falls through
+ default: {
+ if (this._x) this._context.bezierCurveTo(this._x0 = (this._x0 + x) / 2, this._y0, this._x0, y, x, y);
+ else this._context.bezierCurveTo(this._x0, this._y0 = (this._y0 + y) / 2, x, this._y0, x, y);
+ break;
+ }
+ }
+ this._x0 = x, this._y0 = y;
+ }
+}
+
+class BumpRadial {
+ constructor(context) {
+ this._context = context;
+ }
+ lineStart() {
+ this._point = 0;
+ }
+ lineEnd() {}
+ point(x, y) {
+ x = +x, y = +y;
+ if (this._point++ === 0) {
+ this._x0 = x, this._y0 = y;
+ } else {
+ const p0 = pointRadial(this._x0, this._y0);
+ const p1 = pointRadial(this._x0, this._y0 = (this._y0 + y) / 2);
+ const p2 = pointRadial(x, this._y0);
+ const p3 = pointRadial(x, y);
+ this._context.moveTo(...p0);
+ this._context.bezierCurveTo(...p1, ...p2, ...p3);
+ }
+ }
+}
+
+function bumpX(context) {
+ return new Bump(context, true);
+}
+
+function bumpY(context) {
+ return new Bump(context, false);
+}
+
+function bumpRadial(context) {
+ return new BumpRadial(context);
+}
+
+function linkSource(d) {
+ return d.source;
+}
+
+function linkTarget(d) {
+ return d.target;
+}
+
+function link(curve) {
+ let source = linkSource;
+ let target = linkTarget;
+ let x = x$1;
+ let y$1 = y;
+ let context = null;
+ let output = null;
+
+ function link() {
+ let buffer;
+ const argv = slice.call(arguments);
+ const s = source.apply(this, argv);
+ const t = target.apply(this, argv);
+ if (context == null) output = curve(buffer = d3Path.path());
+ output.lineStart();
+ argv[0] = s, output.point(+x.apply(this, argv), +y$1.apply(this, argv));
+ argv[0] = t, output.point(+x.apply(this, argv), +y$1.apply(this, argv));
+ output.lineEnd();
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ link.source = function(_) {
+ return arguments.length ? (source = _, link) : source;
+ };
+
+ link.target = function(_) {
+ return arguments.length ? (target = _, link) : target;
+ };
+
+ link.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), link) : x;
+ };
+
+ link.y = function(_) {
+ return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant(+_), link) : y$1;
+ };
+
+ link.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), link) : context;
+ };
+
+ return link;
+}
+
+function linkHorizontal() {
+ return link(bumpX);
+}
+
+function linkVertical() {
+ return link(bumpY);
+}
+
+function linkRadial() {
+ const l = link(bumpRadial);
+ l.angle = l.x, delete l.x;
+ l.radius = l.y, delete l.y;
+ return l;
+}
+
+const sqrt3$2 = sqrt(3);
+
+var asterisk = {
+ draw(context, size) {
+ const r = sqrt(size + min(size / 28, 0.75)) * 0.59436;
+ const t = r / 2;
+ const u = t * sqrt3$2;
+ context.moveTo(0, r);
+ context.lineTo(0, -r);
+ context.moveTo(-u, -t);
+ context.lineTo(u, t);
+ context.moveTo(-u, t);
+ context.lineTo(u, -t);
+ }
+};
+
+var circle = {
+ draw(context, size) {
+ const r = sqrt(size / pi);
+ context.moveTo(r, 0);
+ context.arc(0, 0, r, 0, tau);
+ }
+};
+
+var cross = {
+ draw(context, size) {
+ const r = sqrt(size / 5) / 2;
+ context.moveTo(-3 * r, -r);
+ context.lineTo(-r, -r);
+ context.lineTo(-r, -3 * r);
+ context.lineTo(r, -3 * r);
+ context.lineTo(r, -r);
+ context.lineTo(3 * r, -r);
+ context.lineTo(3 * r, r);
+ context.lineTo(r, r);
+ context.lineTo(r, 3 * r);
+ context.lineTo(-r, 3 * r);
+ context.lineTo(-r, r);
+ context.lineTo(-3 * r, r);
+ context.closePath();
+ }
+};
+
+const tan30 = sqrt(1 / 3);
+const tan30_2 = tan30 * 2;
+
+var diamond = {
+ draw(context, size) {
+ const y = sqrt(size / tan30_2);
+ const x = y * tan30;
+ context.moveTo(0, -y);
+ context.lineTo(x, 0);
+ context.lineTo(0, y);
+ context.lineTo(-x, 0);
+ context.closePath();
+ }
+};
+
+var diamond2 = {
+ draw(context, size) {
+ const r = sqrt(size) * 0.62625;
+ context.moveTo(0, -r);
+ context.lineTo(r, 0);
+ context.lineTo(0, r);
+ context.lineTo(-r, 0);
+ context.closePath();
+ }
+};
+
+var plus = {
+ draw(context, size) {
+ const r = sqrt(size - min(size / 7, 2)) * 0.87559;
+ context.moveTo(-r, 0);
+ context.lineTo(r, 0);
+ context.moveTo(0, r);
+ context.lineTo(0, -r);
+ }
+};
+
+var square = {
+ draw(context, size) {
+ const w = sqrt(size);
+ const x = -w / 2;
+ context.rect(x, x, w, w);
+ }
+};
+
+var square2 = {
+ draw(context, size) {
+ const r = sqrt(size) * 0.4431;
+ context.moveTo(r, r);
+ context.lineTo(r, -r);
+ context.lineTo(-r, -r);
+ context.lineTo(-r, r);
+ context.closePath();
+ }
+};
+
+const ka = 0.89081309152928522810;
+const kr = sin(pi / 10) / sin(7 * pi / 10);
+const kx = sin(tau / 10) * kr;
+const ky = -cos(tau / 10) * kr;
+
+var star = {
+ draw(context, size) {
+ const r = sqrt(size * ka);
+ const x = kx * r;
+ const y = ky * r;
+ context.moveTo(0, -r);
+ context.lineTo(x, y);
+ for (let i = 1; i < 5; ++i) {
+ const a = tau * i / 5;
+ const c = cos(a);
+ const s = sin(a);
+ context.lineTo(s * r, -c * r);
+ context.lineTo(c * x - s * y, s * x + c * y);
+ }
+ context.closePath();
+ }
+};
+
+const sqrt3$1 = sqrt(3);
+
+var triangle = {
+ draw(context, size) {
+ const y = -sqrt(size / (sqrt3$1 * 3));
+ context.moveTo(0, y * 2);
+ context.lineTo(-sqrt3$1 * y, -y);
+ context.lineTo(sqrt3$1 * y, -y);
+ context.closePath();
+ }
+};
+
+const sqrt3 = sqrt(3);
+
+var triangle2 = {
+ draw(context, size) {
+ const s = sqrt(size) * 0.6824;
+ const t = s / 2;
+ const u = (s * sqrt3) / 2; // cos(Math.PI / 6)
+ context.moveTo(0, -s);
+ context.lineTo(u, t);
+ context.lineTo(-u, t);
+ context.closePath();
+ }
+};
+
+const c = -0.5;
+const s = sqrt(3) / 2;
+const k = 1 / sqrt(12);
+const a = (k / 2 + 1) * 3;
+
+var wye = {
+ draw(context, size) {
+ const r = sqrt(size / a);
+ const x0 = r / 2, y0 = r * k;
+ const x1 = x0, y1 = r * k + r;
+ const x2 = -x1, y2 = y1;
+ context.moveTo(x0, y0);
+ context.lineTo(x1, y1);
+ context.lineTo(x2, y2);
+ context.lineTo(c * x0 - s * y0, s * x0 + c * y0);
+ context.lineTo(c * x1 - s * y1, s * x1 + c * y1);
+ context.lineTo(c * x2 - s * y2, s * x2 + c * y2);
+ context.lineTo(c * x0 + s * y0, c * y0 - s * x0);
+ context.lineTo(c * x1 + s * y1, c * y1 - s * x1);
+ context.lineTo(c * x2 + s * y2, c * y2 - s * x2);
+ context.closePath();
+ }
+};
+
+var x = {
+ draw(context, size) {
+ const r = sqrt(size - min(size / 6, 1.7)) * 0.6189;
+ context.moveTo(-r, -r);
+ context.lineTo(r, r);
+ context.moveTo(-r, r);
+ context.lineTo(r, -r);
+ }
+};
+
+// These symbols are designed to be filled.
+const symbolsFill = [
+ circle,
+ cross,
+ diamond,
+ square,
+ star,
+ triangle,
+ wye
+];
+
+// These symbols are designed to be stroked (with a width of 1.5px and round caps).
+const symbolsStroke = [
+ circle,
+ plus,
+ x,
+ triangle2,
+ asterisk,
+ square2,
+ diamond2
+];
+
+function Symbol(type, size) {
+ let context = null;
+
+ type = typeof type === "function" ? type : constant(type || circle);
+ size = typeof size === "function" ? size : constant(size === undefined ? 64 : +size);
+
+ function symbol() {
+ let buffer;
+ if (!context) context = buffer = d3Path.path();
+ type.apply(this, arguments).draw(context, +size.apply(this, arguments));
+ if (buffer) return context = null, buffer + "" || null;
+ }
+
+ symbol.type = function(_) {
+ return arguments.length ? (type = typeof _ === "function" ? _ : constant(_), symbol) : type;
+ };
+
+ symbol.size = function(_) {
+ return arguments.length ? (size = typeof _ === "function" ? _ : constant(+_), symbol) : size;
+ };
+
+ symbol.context = function(_) {
+ return arguments.length ? (context = _ == null ? null : _, symbol) : context;
+ };
+
+ return symbol;
+}
+
+function noop() {}
+
+function point$3(that, x, y) {
+ that._context.bezierCurveTo(
+ (2 * that._x0 + that._x1) / 3,
+ (2 * that._y0 + that._y1) / 3,
+ (that._x0 + 2 * that._x1) / 3,
+ (that._y0 + 2 * that._y1) / 3,
+ (that._x0 + 4 * that._x1 + x) / 6,
+ (that._y0 + 4 * that._y1 + y) / 6
+ );
+}
+
+function Basis(context) {
+ this._context = context;
+}
+
+Basis.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 3: point$3(this, this._x1, this._y1); // falls through
+ case 2: this._context.lineTo(this._x1, this._y1); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // falls through
+ default: point$3(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+function basis(context) {
+ return new Basis(context);
+}
+
+function BasisClosed(context) {
+ this._context = context;
+}
+
+BasisClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x2, this._y2);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3);
+ this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x2, this._y2);
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._x2 = x, this._y2 = y; break;
+ case 1: this._point = 2; this._x3 = x, this._y3 = y; break;
+ case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break;
+ default: point$3(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+function basisClosed(context) {
+ return new BasisClosed(context);
+}
+
+function BasisOpen(context) {
+ this._context = context;
+}
+
+BasisOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break;
+ case 3: this._point = 4; // falls through
+ default: point$3(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+function basisOpen(context) {
+ return new BasisOpen(context);
+}
+
+function Bundle(context, beta) {
+ this._basis = new Basis(context);
+ this._beta = beta;
+}
+
+Bundle.prototype = {
+ lineStart: function() {
+ this._x = [];
+ this._y = [];
+ this._basis.lineStart();
+ },
+ lineEnd: function() {
+ var x = this._x,
+ y = this._y,
+ j = x.length - 1;
+
+ if (j > 0) {
+ var x0 = x[0],
+ y0 = y[0],
+ dx = x[j] - x0,
+ dy = y[j] - y0,
+ i = -1,
+ t;
+
+ while (++i <= j) {
+ t = i / j;
+ this._basis.point(
+ this._beta * x[i] + (1 - this._beta) * (x0 + t * dx),
+ this._beta * y[i] + (1 - this._beta) * (y0 + t * dy)
+ );
+ }
+ }
+
+ this._x = this._y = null;
+ this._basis.lineEnd();
+ },
+ point: function(x, y) {
+ this._x.push(+x);
+ this._y.push(+y);
+ }
+};
+
+var bundle = (function custom(beta) {
+
+ function bundle(context) {
+ return beta === 1 ? new Basis(context) : new Bundle(context, beta);
+ }
+
+ bundle.beta = function(beta) {
+ return custom(+beta);
+ };
+
+ return bundle;
+})(0.85);
+
+function point$2(that, x, y) {
+ that._context.bezierCurveTo(
+ that._x1 + that._k * (that._x2 - that._x0),
+ that._y1 + that._k * (that._y2 - that._y0),
+ that._x2 + that._k * (that._x1 - x),
+ that._y2 + that._k * (that._y1 - y),
+ that._x2,
+ that._y2
+ );
+}
+
+function Cardinal(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+Cardinal.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x2, this._y2); break;
+ case 3: point$2(this, this._x1, this._y1); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; this._x1 = x, this._y1 = y; break;
+ case 2: this._point = 3; // falls through
+ default: point$2(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var cardinal = (function custom(tension) {
+
+ function cardinal(context) {
+ return new Cardinal(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
+
+function CardinalClosed(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+CardinalClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.lineTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ this.point(this._x5, this._y5);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+ case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+ case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+ default: point$2(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var cardinalClosed = (function custom(tension) {
+
+ function cardinal(context) {
+ return new CardinalClosed(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
+
+function CardinalOpen(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+CardinalOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+ case 3: this._point = 4; // falls through
+ default: point$2(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var cardinalOpen = (function custom(tension) {
+
+ function cardinal(context) {
+ return new CardinalOpen(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
+
+function point$1(that, x, y) {
+ var x1 = that._x1,
+ y1 = that._y1,
+ x2 = that._x2,
+ y2 = that._y2;
+
+ if (that._l01_a > epsilon) {
+ var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a,
+ n = 3 * that._l01_a * (that._l01_a + that._l12_a);
+ x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n;
+ y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n;
+ }
+
+ if (that._l23_a > epsilon) {
+ var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a,
+ m = 3 * that._l23_a * (that._l23_a + that._l12_a);
+ x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m;
+ y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m;
+ }
+
+ that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2);
+}
+
+function CatmullRom(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRom.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x2, this._y2); break;
+ case 3: this.point(this._x2, this._y2); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; // falls through
+ default: point$1(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var catmullRom = (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
+
+function CatmullRomClosed(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRomClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.lineTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ this.point(this._x5, this._y5);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+ case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+ case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+ default: point$1(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var catmullRomClosed = (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
+
+function CatmullRomOpen(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRomOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+ case 3: this._point = 4; // falls through
+ default: point$1(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+var catmullRomOpen = (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
+
+function LinearClosed(context) {
+ this._context = context;
+}
+
+LinearClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._point) this._context.closePath();
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ if (this._point) this._context.lineTo(x, y);
+ else this._point = 1, this._context.moveTo(x, y);
+ }
+};
+
+function linearClosed(context) {
+ return new LinearClosed(context);
+}
+
+function sign(x) {
+ return x < 0 ? -1 : 1;
+}
+
+// Calculate the slopes of the tangents (Hermite-type interpolation) based on
+// the following paper: Steffen, M. 1990. A Simple Method for Monotonic
+// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO.
+// NOV(II), P. 443, 1990.
+function slope3(that, x2, y2) {
+ var h0 = that._x1 - that._x0,
+ h1 = x2 - that._x1,
+ s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0),
+ s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0),
+ p = (s0 * h1 + s1 * h0) / (h0 + h1);
+ return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0;
+}
+
+// Calculate a one-sided slope.
+function slope2(that, t) {
+ var h = that._x1 - that._x0;
+ return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t;
+}
+
+// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations
+// "you can express cubic Hermite interpolation in terms of cubic Bézier curves
+// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1".
+function point(that, t0, t1) {
+ var x0 = that._x0,
+ y0 = that._y0,
+ x1 = that._x1,
+ y1 = that._y1,
+ dx = (x1 - x0) / 3;
+ that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1);
+}
+
+function MonotoneX(context) {
+ this._context = context;
+}
+
+MonotoneX.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 =
+ this._t0 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x1, this._y1); break;
+ case 3: point(this, this._t0, slope2(this, this._t0)); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ var t1 = NaN;
+
+ x = +x, y = +y;
+ if (x === this._x1 && y === this._y1) return; // Ignore coincident points.
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; point(this, slope2(this, t1 = slope3(this, x, y)), t1); break;
+ default: point(this, this._t0, t1 = slope3(this, x, y)); break;
+ }
+
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ this._t0 = t1;
+ }
+};
+
+function MonotoneY(context) {
+ this._context = new ReflectContext(context);
+}
+
+(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) {
+ MonotoneX.prototype.point.call(this, y, x);
+};
+
+function ReflectContext(context) {
+ this._context = context;
+}
+
+ReflectContext.prototype = {
+ moveTo: function(x, y) { this._context.moveTo(y, x); },
+ closePath: function() { this._context.closePath(); },
+ lineTo: function(x, y) { this._context.lineTo(y, x); },
+ bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); }
+};
+
+function monotoneX(context) {
+ return new MonotoneX(context);
+}
+
+function monotoneY(context) {
+ return new MonotoneY(context);
+}
+
+function Natural(context) {
+ this._context = context;
+}
+
+Natural.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x = [];
+ this._y = [];
+ },
+ lineEnd: function() {
+ var x = this._x,
+ y = this._y,
+ n = x.length;
+
+ if (n) {
+ this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]);
+ if (n === 2) {
+ this._context.lineTo(x[1], y[1]);
+ } else {
+ var px = controlPoints(x),
+ py = controlPoints(y);
+ for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) {
+ this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]);
+ }
+ }
+ }
+
+ if (this._line || (this._line !== 0 && n === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ this._x = this._y = null;
+ },
+ point: function(x, y) {
+ this._x.push(+x);
+ this._y.push(+y);
+ }
+};
+
+// See https://www.particleincell.com/2012/bezier-splines/ for derivation.
+function controlPoints(x) {
+ var i,
+ n = x.length - 1,
+ m,
+ a = new Array(n),
+ b = new Array(n),
+ r = new Array(n);
+ a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1];
+ for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1];
+ a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n];
+ for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1];
+ a[n - 1] = r[n - 1] / b[n - 1];
+ for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i];
+ b[n - 1] = (x[n] + a[n - 1]) / 2;
+ for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1];
+ return [a, b];
+}
+
+function natural(context) {
+ return new Natural(context);
+}
+
+function Step(context, t) {
+ this._context = context;
+ this._t = t;
+}
+
+Step.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x = this._y = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y);
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; // falls through
+ default: {
+ if (this._t <= 0) {
+ this._context.lineTo(this._x, y);
+ this._context.lineTo(x, y);
+ } else {
+ var x1 = this._x * (1 - this._t) + x * this._t;
+ this._context.lineTo(x1, this._y);
+ this._context.lineTo(x1, y);
+ }
+ break;
+ }
+ }
+ this._x = x, this._y = y;
+ }
+};
+
+function step(context) {
+ return new Step(context, 0.5);
+}
+
+function stepBefore(context) {
+ return new Step(context, 0);
+}
+
+function stepAfter(context) {
+ return new Step(context, 1);
+}
+
+function none$1(series, order) {
+ if (!((n = series.length) > 1)) return;
+ for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) {
+ s0 = s1, s1 = series[order[i]];
+ for (j = 0; j < m; ++j) {
+ s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1];
+ }
+ }
+}
+
+function none(series) {
+ var n = series.length, o = new Array(n);
+ while (--n >= 0) o[n] = n;
+ return o;
+}
+
+function stackValue(d, key) {
+ return d[key];
+}
+
+function stackSeries(key) {
+ const series = [];
+ series.key = key;
+ return series;
+}
+
+function stack() {
+ var keys = constant([]),
+ order = none,
+ offset = none$1,
+ value = stackValue;
+
+ function stack(data) {
+ var sz = Array.from(keys.apply(this, arguments), stackSeries),
+ i, n = sz.length, j = -1,
+ oz;
+
+ for (const d of data) {
+ for (i = 0, ++j; i < n; ++i) {
+ (sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d;
+ }
+ }
+
+ for (i = 0, oz = array(order(sz)); i < n; ++i) {
+ sz[oz[i]].index = i;
+ }
+
+ offset(sz, oz);
+ return sz;
+ }
+
+ stack.keys = function(_) {
+ return arguments.length ? (keys = typeof _ === "function" ? _ : constant(Array.from(_)), stack) : keys;
+ };
+
+ stack.value = function(_) {
+ return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), stack) : value;
+ };
+
+ stack.order = function(_) {
+ return arguments.length ? (order = _ == null ? none : typeof _ === "function" ? _ : constant(Array.from(_)), stack) : order;
+ };
+
+ stack.offset = function(_) {
+ return arguments.length ? (offset = _ == null ? none$1 : _, stack) : offset;
+ };
+
+ return stack;
+}
+
+function expand(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) {
+ for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0;
+ if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y;
+ }
+ none$1(series, order);
+}
+
+function diverging(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) {
+ for (yp = yn = 0, i = 0; i < n; ++i) {
+ if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) {
+ d[0] = yp, d[1] = yp += dy;
+ } else if (dy < 0) {
+ d[1] = yn, d[0] = yn += dy;
+ } else {
+ d[0] = 0, d[1] = dy;
+ }
+ }
+ }
+}
+
+function silhouette(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) {
+ for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0;
+ s0[j][1] += s0[j][0] = -y / 2;
+ }
+ none$1(series, order);
+}
+
+function wiggle(series, order) {
+ if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return;
+ for (var y = 0, j = 1, s0, m, n; j < m; ++j) {
+ for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) {
+ var si = series[order[i]],
+ sij0 = si[j][1] || 0,
+ sij1 = si[j - 1][1] || 0,
+ s3 = (sij0 - sij1) / 2;
+ for (var k = 0; k < i; ++k) {
+ var sk = series[order[k]],
+ skj0 = sk[j][1] || 0,
+ skj1 = sk[j - 1][1] || 0;
+ s3 += skj0 - skj1;
+ }
+ s1 += sij0, s2 += s3 * sij0;
+ }
+ s0[j - 1][1] += s0[j - 1][0] = y;
+ if (s1) y -= s2 / s1;
+ }
+ s0[j - 1][1] += s0[j - 1][0] = y;
+ none$1(series, order);
+}
+
+function appearance(series) {
+ var peaks = series.map(peak);
+ return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; });
+}
+
+function peak(series) {
+ var i = -1, j = 0, n = series.length, vi, vj = -Infinity;
+ while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i;
+ return j;
+}
+
+function ascending(series) {
+ var sums = series.map(sum);
+ return none(series).sort(function(a, b) { return sums[a] - sums[b]; });
+}
+
+function sum(series) {
+ var s = 0, i = -1, n = series.length, v;
+ while (++i < n) if (v = +series[i][1]) s += v;
+ return s;
+}
+
+function descending(series) {
+ return ascending(series).reverse();
+}
+
+function insideOut(series) {
+ var n = series.length,
+ i,
+ j,
+ sums = series.map(sum),
+ order = appearance(series),
+ top = 0,
+ bottom = 0,
+ tops = [],
+ bottoms = [];
+
+ for (i = 0; i < n; ++i) {
+ j = order[i];
+ if (top < bottom) {
+ top += sums[j];
+ tops.push(j);
+ } else {
+ bottom += sums[j];
+ bottoms.push(j);
+ }
+ }
+
+ return bottoms.reverse().concat(tops);
+}
+
+function reverse(series) {
+ return none(series).reverse();
+}
+
+exports.arc = arc;
+exports.area = area;
+exports.areaRadial = areaRadial;
+exports.curveBasis = basis;
+exports.curveBasisClosed = basisClosed;
+exports.curveBasisOpen = basisOpen;
+exports.curveBumpX = bumpX;
+exports.curveBumpY = bumpY;
+exports.curveBundle = bundle;
+exports.curveCardinal = cardinal;
+exports.curveCardinalClosed = cardinalClosed;
+exports.curveCardinalOpen = cardinalOpen;
+exports.curveCatmullRom = catmullRom;
+exports.curveCatmullRomClosed = catmullRomClosed;
+exports.curveCatmullRomOpen = catmullRomOpen;
+exports.curveLinear = curveLinear;
+exports.curveLinearClosed = linearClosed;
+exports.curveMonotoneX = monotoneX;
+exports.curveMonotoneY = monotoneY;
+exports.curveNatural = natural;
+exports.curveStep = step;
+exports.curveStepAfter = stepAfter;
+exports.curveStepBefore = stepBefore;
+exports.line = line;
+exports.lineRadial = lineRadial$1;
+exports.link = link;
+exports.linkHorizontal = linkHorizontal;
+exports.linkRadial = linkRadial;
+exports.linkVertical = linkVertical;
+exports.pie = pie;
+exports.pointRadial = pointRadial;
+exports.radialArea = areaRadial;
+exports.radialLine = lineRadial$1;
+exports.stack = stack;
+exports.stackOffsetDiverging = diverging;
+exports.stackOffsetExpand = expand;
+exports.stackOffsetNone = none$1;
+exports.stackOffsetSilhouette = silhouette;
+exports.stackOffsetWiggle = wiggle;
+exports.stackOrderAppearance = appearance;
+exports.stackOrderAscending = ascending;
+exports.stackOrderDescending = descending;
+exports.stackOrderInsideOut = insideOut;
+exports.stackOrderNone = none;
+exports.stackOrderReverse = reverse;
+exports.symbol = Symbol;
+exports.symbolAsterisk = asterisk;
+exports.symbolCircle = circle;
+exports.symbolCross = cross;
+exports.symbolDiamond = diamond;
+exports.symbolDiamond2 = diamond2;
+exports.symbolPlus = plus;
+exports.symbolSquare = square;
+exports.symbolSquare2 = square2;
+exports.symbolStar = star;
+exports.symbolTriangle = triangle;
+exports.symbolTriangle2 = triangle2;
+exports.symbolWye = wye;
+exports.symbolX = x;
+exports.symbols = symbolsFill;
+exports.symbolsFill = symbolsFill;
+exports.symbolsStroke = symbolsStroke;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/node_modules/d3-shape/dist/d3-shape.min.js b/node_modules/d3-shape/dist/d3-shape.min.js
new file mode 100644
index 00000000..b7019cc1
--- /dev/null
+++ b/node_modules/d3-shape/dist/d3-shape.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-shape/ v3.1.0 Copyright 2010-2021 Mike Bostock
+!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports,require("d3-path")):"function"==typeof define&&define.amd?define(["exports","d3-path"],n):n((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{},t.d3)}(this,(function(t,n){"use strict";function i(t){return function(){return t}}const e=Math.abs,s=Math.atan2,o=Math.cos,h=Math.max,_=Math.min,r=Math.sin,a=Math.sqrt,l=1e-12,c=Math.PI,u=c/2,f=2*c;function y(t){return t>1?0:t<-1?c:Math.acos(t)}function x(t){return t>=1?u:t<=-1?-u:Math.asin(t)}function p(t){return t.innerRadius}function v(t){return t.outerRadius}function d(t){return t.startAngle}function T(t){return t.endAngle}function g(t){return t&&t.padAngle}function b(t,n,i,e,s,o,h,_){var r=i-t,a=e-n,c=h-s,u=_-o,f=u*r-c*a;if(!(f*fO*O+R*R&&(S=A,E=P),{cx:S,cy:E,x01:-u,y01:-f,x11:S*(s/w-1),y11:E*(s/w-1)}}var w=Array.prototype.slice;function k(t){return"object"==typeof t&&"length"in t?t:Array.from(t)}function N(t){this._context=t}function S(t){return 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i,e,s,o=0,h=t[0].length;o0){for(var i,e=0,s=t[n[0]],o=s.length;e0&&(e=(i=t[n[0]]).length)>0){for(var i,e,s,o=0,h=1;h=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-shape.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-shape/",
+ "jsdelivr": "dist/d3-shape.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "graphics",
+ "visualization",
+ "canvas",
+ "svg"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-shape",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-shape.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-shape.min.js",
+ "version": "3.1.0"
+}
diff --git a/node_modules/d3-shape/src/arc.js b/node_modules/d3-shape/src/arc.js
new file mode 100644
index 00000000..2032882d
--- /dev/null
+++ b/node_modules/d3-shape/src/arc.js
@@ -0,0 +1,261 @@
+import {path} from "d3-path";
+import constant from "./constant.js";
+import {abs, acos, asin, atan2, cos, epsilon, halfPi, max, min, pi, sin, sqrt, tau} from "./math.js";
+
+function arcInnerRadius(d) {
+ return d.innerRadius;
+}
+
+function arcOuterRadius(d) {
+ return d.outerRadius;
+}
+
+function arcStartAngle(d) {
+ return d.startAngle;
+}
+
+function arcEndAngle(d) {
+ return d.endAngle;
+}
+
+function arcPadAngle(d) {
+ return d && d.padAngle; // Note: optional!
+}
+
+function intersect(x0, y0, x1, y1, x2, y2, x3, y3) {
+ var x10 = x1 - x0, y10 = y1 - y0,
+ x32 = x3 - x2, y32 = y3 - y2,
+ t = y32 * x10 - x32 * y10;
+ if (t * t < epsilon) return;
+ t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t;
+ return [x0 + t * x10, y0 + t * y10];
+}
+
+// Compute perpendicular offset line of length rc.
+// http://mathworld.wolfram.com/Circle-LineIntersection.html
+function cornerTangents(x0, y0, x1, y1, r1, rc, cw) {
+ var x01 = x0 - x1,
+ y01 = y0 - y1,
+ lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01),
+ ox = lo * y01,
+ oy = -lo * x01,
+ x11 = x0 + ox,
+ y11 = y0 + oy,
+ x10 = x1 + ox,
+ y10 = y1 + oy,
+ x00 = (x11 + x10) / 2,
+ y00 = (y11 + y10) / 2,
+ dx = x10 - x11,
+ dy = y10 - y11,
+ d2 = dx * dx + dy * dy,
+ r = r1 - rc,
+ D = x11 * y10 - x10 * y11,
+ d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)),
+ cx0 = (D * dy - dx * d) / d2,
+ cy0 = (-D * dx - dy * d) / d2,
+ cx1 = (D * dy + dx * d) / d2,
+ cy1 = (-D * dx + dy * d) / d2,
+ dx0 = cx0 - x00,
+ dy0 = cy0 - y00,
+ dx1 = cx1 - x00,
+ dy1 = cy1 - y00;
+
+ // Pick the closer of the two intersection points.
+ // TODO Is there a faster way to determine which intersection to use?
+ if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
+
+ return {
+ cx: cx0,
+ cy: cy0,
+ x01: -ox,
+ y01: -oy,
+ x11: cx0 * (r1 / r - 1),
+ y11: cy0 * (r1 / r - 1)
+ };
+}
+
+export default function() {
+ var innerRadius = arcInnerRadius,
+ outerRadius = arcOuterRadius,
+ cornerRadius = constant(0),
+ padRadius = null,
+ startAngle = arcStartAngle,
+ endAngle = arcEndAngle,
+ padAngle = arcPadAngle,
+ context = null;
+
+ function arc() {
+ var buffer,
+ r,
+ r0 = +innerRadius.apply(this, arguments),
+ r1 = +outerRadius.apply(this, arguments),
+ a0 = startAngle.apply(this, arguments) - halfPi,
+ a1 = endAngle.apply(this, arguments) - halfPi,
+ da = abs(a1 - a0),
+ cw = a1 > a0;
+
+ if (!context) context = buffer = path();
+
+ // Ensure that the outer radius is always larger than the inner radius.
+ if (r1 < r0) r = r1, r1 = r0, r0 = r;
+
+ // Is it a point?
+ if (!(r1 > epsilon)) context.moveTo(0, 0);
+
+ // Or is it a circle or annulus?
+ else if (da > tau - epsilon) {
+ context.moveTo(r1 * cos(a0), r1 * sin(a0));
+ context.arc(0, 0, r1, a0, a1, !cw);
+ if (r0 > epsilon) {
+ context.moveTo(r0 * cos(a1), r0 * sin(a1));
+ context.arc(0, 0, r0, a1, a0, cw);
+ }
+ }
+
+ // Or is it a circular or annular sector?
+ else {
+ var a01 = a0,
+ a11 = a1,
+ a00 = a0,
+ a10 = a1,
+ da0 = da,
+ da1 = da,
+ ap = padAngle.apply(this, arguments) / 2,
+ rp = (ap > epsilon) && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)),
+ rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)),
+ rc0 = rc,
+ rc1 = rc,
+ t0,
+ t1;
+
+ // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0.
+ if (rp > epsilon) {
+ var p0 = asin(rp / r0 * sin(ap)),
+ p1 = asin(rp / r1 * sin(ap));
+ if ((da0 -= p0 * 2) > epsilon) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0;
+ else da0 = 0, a00 = a10 = (a0 + a1) / 2;
+ if ((da1 -= p1 * 2) > epsilon) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1;
+ else da1 = 0, a01 = a11 = (a0 + a1) / 2;
+ }
+
+ var x01 = r1 * cos(a01),
+ y01 = r1 * sin(a01),
+ x10 = r0 * cos(a10),
+ y10 = r0 * sin(a10);
+
+ // Apply rounded corners?
+ if (rc > epsilon) {
+ var x11 = r1 * cos(a11),
+ y11 = r1 * sin(a11),
+ x00 = r0 * cos(a00),
+ y00 = r0 * sin(a00),
+ oc;
+
+ // Restrict the corner radius according to the sector angle.
+ if (da < pi && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) {
+ var ax = x01 - oc[0],
+ ay = y01 - oc[1],
+ bx = x11 - oc[0],
+ by = y11 - oc[1],
+ kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2),
+ lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
+ rc0 = min(rc, (r0 - lc) / (kc - 1));
+ rc1 = min(rc, (r1 - lc) / (kc + 1));
+ }
+ }
+
+ // Is the sector collapsed to a line?
+ if (!(da1 > epsilon)) context.moveTo(x01, y01);
+
+ // Does the sector’s outer ring have rounded corners?
+ else if (rc1 > epsilon) {
+ t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw);
+ t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw);
+
+ context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+ // Have the corners merged?
+ if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+ // Otherwise, draw the two corners and the ring.
+ else {
+ context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+ context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw);
+ context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+ }
+ }
+
+ // Or is the outer ring just a circular arc?
+ else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw);
+
+ // Is there no inner ring, and it’s a circular sector?
+ // Or perhaps it’s an annular sector collapsed due to padding?
+ if (!(r0 > epsilon) || !(da0 > epsilon)) context.lineTo(x10, y10);
+
+ // Does the sector’s inner ring (or point) have rounded corners?
+ else if (rc0 > epsilon) {
+ t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw);
+ t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw);
+
+ context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01);
+
+ // Have the corners merged?
+ if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
+
+ // Otherwise, draw the two corners and the ring.
+ else {
+ context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
+ context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw);
+ context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
+ }
+ }
+
+ // Or is the inner ring just a circular arc?
+ else context.arc(0, 0, r0, a10, a00, cw);
+ }
+
+ context.closePath();
+
+ if (buffer) return context = null, buffer + "" || null;
+ }
+
+ arc.centroid = function() {
+ var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2,
+ a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2;
+ return [cos(a) * r, sin(a) * r];
+ };
+
+ arc.innerRadius = function(_) {
+ return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant(+_), arc) : innerRadius;
+ };
+
+ arc.outerRadius = function(_) {
+ return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant(+_), arc) : outerRadius;
+ };
+
+ arc.cornerRadius = function(_) {
+ return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant(+_), arc) : cornerRadius;
+ };
+
+ arc.padRadius = function(_) {
+ return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant(+_), arc) : padRadius;
+ };
+
+ arc.startAngle = function(_) {
+ return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), arc) : startAngle;
+ };
+
+ arc.endAngle = function(_) {
+ return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), arc) : endAngle;
+ };
+
+ arc.padAngle = function(_) {
+ return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), arc) : padAngle;
+ };
+
+ arc.context = function(_) {
+ return arguments.length ? ((context = _ == null ? null : _), arc) : context;
+ };
+
+ return arc;
+}
diff --git a/node_modules/d3-shape/src/area.js b/node_modules/d3-shape/src/area.js
new file mode 100644
index 00000000..8726630a
--- /dev/null
+++ b/node_modules/d3-shape/src/area.js
@@ -0,0 +1,111 @@
+import {path} from "d3-path";
+import array from "./array.js";
+import constant from "./constant.js";
+import curveLinear from "./curve/linear.js";
+import line from "./line.js";
+import {x as pointX, y as pointY} from "./point.js";
+
+export default function(x0, y0, y1) {
+ var x1 = null,
+ defined = constant(true),
+ context = null,
+ curve = curveLinear,
+ output = null;
+
+ x0 = typeof x0 === "function" ? x0 : (x0 === undefined) ? pointX : constant(+x0);
+ y0 = typeof y0 === "function" ? y0 : (y0 === undefined) ? constant(0) : constant(+y0);
+ y1 = typeof y1 === "function" ? y1 : (y1 === undefined) ? pointY : constant(+y1);
+
+ function area(data) {
+ var i,
+ j,
+ k,
+ n = (data = array(data)).length,
+ d,
+ defined0 = false,
+ buffer,
+ x0z = new Array(n),
+ y0z = new Array(n);
+
+ if (context == null) output = curve(buffer = path());
+
+ for (i = 0; i <= n; ++i) {
+ if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+ if (defined0 = !defined0) {
+ j = i;
+ output.areaStart();
+ output.lineStart();
+ } else {
+ output.lineEnd();
+ output.lineStart();
+ for (k = i - 1; k >= j; --k) {
+ output.point(x0z[k], y0z[k]);
+ }
+ output.lineEnd();
+ output.areaEnd();
+ }
+ }
+ if (defined0) {
+ x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data);
+ output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]);
+ }
+ }
+
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ function arealine() {
+ return line().defined(defined).curve(curve).context(context);
+ }
+
+ area.x = function(_) {
+ return arguments.length ? (x0 = typeof _ === "function" ? _ : constant(+_), x1 = null, area) : x0;
+ };
+
+ area.x0 = function(_) {
+ return arguments.length ? (x0 = typeof _ === "function" ? _ : constant(+_), area) : x0;
+ };
+
+ area.x1 = function(_) {
+ return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant(+_), area) : x1;
+ };
+
+ area.y = function(_) {
+ return arguments.length ? (y0 = typeof _ === "function" ? _ : constant(+_), y1 = null, area) : y0;
+ };
+
+ area.y0 = function(_) {
+ return arguments.length ? (y0 = typeof _ === "function" ? _ : constant(+_), area) : y0;
+ };
+
+ area.y1 = function(_) {
+ return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant(+_), area) : y1;
+ };
+
+ area.lineX0 =
+ area.lineY0 = function() {
+ return arealine().x(x0).y(y0);
+ };
+
+ area.lineY1 = function() {
+ return arealine().x(x0).y(y1);
+ };
+
+ area.lineX1 = function() {
+ return arealine().x(x1).y(y0);
+ };
+
+ area.defined = function(_) {
+ return arguments.length ? (defined = typeof _ === "function" ? _ : constant(!!_), area) : defined;
+ };
+
+ area.curve = function(_) {
+ return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve;
+ };
+
+ area.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context;
+ };
+
+ return area;
+}
diff --git a/node_modules/d3-shape/src/areaRadial.js b/node_modules/d3-shape/src/areaRadial.js
new file mode 100644
index 00000000..61e01d78
--- /dev/null
+++ b/node_modules/d3-shape/src/areaRadial.js
@@ -0,0 +1,29 @@
+import curveRadial, {curveRadialLinear} from "./curve/radial.js";
+import area from "./area.js";
+import {lineRadial} from "./lineRadial.js";
+
+export default function() {
+ var a = area().curve(curveRadialLinear),
+ c = a.curve,
+ x0 = a.lineX0,
+ x1 = a.lineX1,
+ y0 = a.lineY0,
+ y1 = a.lineY1;
+
+ a.angle = a.x, delete a.x;
+ a.startAngle = a.x0, delete a.x0;
+ a.endAngle = a.x1, delete a.x1;
+ a.radius = a.y, delete a.y;
+ a.innerRadius = a.y0, delete a.y0;
+ a.outerRadius = a.y1, delete a.y1;
+ a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0;
+ a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1;
+ a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0;
+ a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1;
+
+ a.curve = function(_) {
+ return arguments.length ? c(curveRadial(_)) : c()._curve;
+ };
+
+ return a;
+}
diff --git a/node_modules/d3-shape/src/array.js b/node_modules/d3-shape/src/array.js
new file mode 100644
index 00000000..90808ffe
--- /dev/null
+++ b/node_modules/d3-shape/src/array.js
@@ -0,0 +1,7 @@
+export var slice = Array.prototype.slice;
+
+export default function(x) {
+ return typeof x === "object" && "length" in x
+ ? x // Array, TypedArray, NodeList, array-like
+ : Array.from(x); // Map, Set, iterable, string, or anything else
+}
diff --git a/node_modules/d3-shape/src/constant.js b/node_modules/d3-shape/src/constant.js
new file mode 100644
index 00000000..6fa95b71
--- /dev/null
+++ b/node_modules/d3-shape/src/constant.js
@@ -0,0 +1,5 @@
+export default function(x) {
+ return function constant() {
+ return x;
+ };
+}
diff --git a/node_modules/d3-shape/src/curve/basis.js b/node_modules/d3-shape/src/curve/basis.js
new file mode 100644
index 00000000..e6b1ea3c
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/basis.js
@@ -0,0 +1,51 @@
+export function point(that, x, y) {
+ that._context.bezierCurveTo(
+ (2 * that._x0 + that._x1) / 3,
+ (2 * that._y0 + that._y1) / 3,
+ (that._x0 + 2 * that._x1) / 3,
+ (that._y0 + 2 * that._y1) / 3,
+ (that._x0 + 4 * that._x1 + x) / 6,
+ (that._y0 + 4 * that._y1 + y) / 6
+ );
+}
+
+export function Basis(context) {
+ this._context = context;
+}
+
+Basis.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 3: point(this, this._x1, this._y1); // falls through
+ case 2: this._context.lineTo(this._x1, this._y1); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // falls through
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+export default function(context) {
+ return new Basis(context);
+}
diff --git a/node_modules/d3-shape/src/curve/basisClosed.js b/node_modules/d3-shape/src/curve/basisClosed.js
new file mode 100644
index 00000000..535df90f
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/basisClosed.js
@@ -0,0 +1,52 @@
+import noop from "../noop.js";
+import {point} from "./basis.js";
+
+function BasisClosed(context) {
+ this._context = context;
+}
+
+BasisClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x2, this._y2);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3);
+ this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x2, this._y2);
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._x2 = x, this._y2 = y; break;
+ case 1: this._point = 2; this._x3 = x, this._y3 = y; break;
+ case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break;
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+export default function(context) {
+ return new BasisClosed(context);
+}
diff --git a/node_modules/d3-shape/src/curve/basisOpen.js b/node_modules/d3-shape/src/curve/basisOpen.js
new file mode 100644
index 00000000..4ef5343b
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/basisOpen.js
@@ -0,0 +1,39 @@
+import {point} from "./basis.js";
+
+function BasisOpen(context) {
+ this._context = context;
+}
+
+BasisOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break;
+ case 3: this._point = 4; // falls through
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ }
+};
+
+export default function(context) {
+ return new BasisOpen(context);
+}
diff --git a/node_modules/d3-shape/src/curve/bump.js b/node_modules/d3-shape/src/curve/bump.js
new file mode 100644
index 00000000..8c5cab17
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/bump.js
@@ -0,0 +1,74 @@
+import pointRadial from "../pointRadial.js";
+
+class Bump {
+ constructor(context, x) {
+ this._context = context;
+ this._x = x;
+ }
+ areaStart() {
+ this._line = 0;
+ }
+ areaEnd() {
+ this._line = NaN;
+ }
+ lineStart() {
+ this._point = 0;
+ }
+ lineEnd() {
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ }
+ point(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: {
+ this._point = 1;
+ if (this._line) this._context.lineTo(x, y);
+ else this._context.moveTo(x, y);
+ break;
+ }
+ case 1: this._point = 2; // falls through
+ default: {
+ if (this._x) this._context.bezierCurveTo(this._x0 = (this._x0 + x) / 2, this._y0, this._x0, y, x, y);
+ else this._context.bezierCurveTo(this._x0, this._y0 = (this._y0 + y) / 2, x, this._y0, x, y);
+ break;
+ }
+ }
+ this._x0 = x, this._y0 = y;
+ }
+}
+
+class BumpRadial {
+ constructor(context) {
+ this._context = context;
+ }
+ lineStart() {
+ this._point = 0;
+ }
+ lineEnd() {}
+ point(x, y) {
+ x = +x, y = +y;
+ if (this._point++ === 0) {
+ this._x0 = x, this._y0 = y;
+ } else {
+ const p0 = pointRadial(this._x0, this._y0);
+ const p1 = pointRadial(this._x0, this._y0 = (this._y0 + y) / 2);
+ const p2 = pointRadial(x, this._y0);
+ const p3 = pointRadial(x, y);
+ this._context.moveTo(...p0);
+ this._context.bezierCurveTo(...p1, ...p2, ...p3);
+ }
+ }
+}
+
+export function bumpX(context) {
+ return new Bump(context, true);
+}
+
+export function bumpY(context) {
+ return new Bump(context, false);
+}
+
+export function bumpRadial(context) {
+ return new BumpRadial(context);
+}
diff --git a/node_modules/d3-shape/src/curve/bundle.js b/node_modules/d3-shape/src/curve/bundle.js
new file mode 100644
index 00000000..ac1014eb
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/bundle.js
@@ -0,0 +1,56 @@
+import {Basis} from "./basis.js";
+
+function Bundle(context, beta) {
+ this._basis = new Basis(context);
+ this._beta = beta;
+}
+
+Bundle.prototype = {
+ lineStart: function() {
+ this._x = [];
+ this._y = [];
+ this._basis.lineStart();
+ },
+ lineEnd: function() {
+ var x = this._x,
+ y = this._y,
+ j = x.length - 1;
+
+ if (j > 0) {
+ var x0 = x[0],
+ y0 = y[0],
+ dx = x[j] - x0,
+ dy = y[j] - y0,
+ i = -1,
+ t;
+
+ while (++i <= j) {
+ t = i / j;
+ this._basis.point(
+ this._beta * x[i] + (1 - this._beta) * (x0 + t * dx),
+ this._beta * y[i] + (1 - this._beta) * (y0 + t * dy)
+ );
+ }
+ }
+
+ this._x = this._y = null;
+ this._basis.lineEnd();
+ },
+ point: function(x, y) {
+ this._x.push(+x);
+ this._y.push(+y);
+ }
+};
+
+export default (function custom(beta) {
+
+ function bundle(context) {
+ return beta === 1 ? new Basis(context) : new Bundle(context, beta);
+ }
+
+ bundle.beta = function(beta) {
+ return custom(+beta);
+ };
+
+ return bundle;
+})(0.85);
diff --git a/node_modules/d3-shape/src/curve/cardinal.js b/node_modules/d3-shape/src/curve/cardinal.js
new file mode 100644
index 00000000..7e64c14c
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/cardinal.js
@@ -0,0 +1,61 @@
+export function point(that, x, y) {
+ that._context.bezierCurveTo(
+ that._x1 + that._k * (that._x2 - that._x0),
+ that._y1 + that._k * (that._y2 - that._y0),
+ that._x2 + that._k * (that._x1 - x),
+ that._y2 + that._k * (that._y1 - y),
+ that._x2,
+ that._y2
+ );
+}
+
+export function Cardinal(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+Cardinal.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x2, this._y2); break;
+ case 3: point(this, this._x1, this._y1); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; this._x1 = x, this._y1 = y; break;
+ case 2: this._point = 3; // falls through
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(tension) {
+
+ function cardinal(context) {
+ return new Cardinal(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
diff --git a/node_modules/d3-shape/src/curve/cardinalClosed.js b/node_modules/d3-shape/src/curve/cardinalClosed.js
new file mode 100644
index 00000000..acef52e3
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/cardinalClosed.js
@@ -0,0 +1,61 @@
+import noop from "../noop.js";
+import {point} from "./cardinal.js";
+
+export function CardinalClosed(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+CardinalClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.lineTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ this.point(this._x5, this._y5);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+ case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+ case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(tension) {
+
+ function cardinal(context) {
+ return new CardinalClosed(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
diff --git a/node_modules/d3-shape/src/curve/cardinalOpen.js b/node_modules/d3-shape/src/curve/cardinalOpen.js
new file mode 100644
index 00000000..f73ac8b0
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/cardinalOpen.js
@@ -0,0 +1,49 @@
+import {point} from "./cardinal.js";
+
+export function CardinalOpen(context, tension) {
+ this._context = context;
+ this._k = (1 - tension) / 6;
+}
+
+CardinalOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+ case 3: this._point = 4; // falls through
+ default: point(this, x, y); break;
+ }
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(tension) {
+
+ function cardinal(context) {
+ return new CardinalOpen(context, tension);
+ }
+
+ cardinal.tension = function(tension) {
+ return custom(+tension);
+ };
+
+ return cardinal;
+})(0);
diff --git a/node_modules/d3-shape/src/curve/catmullRom.js b/node_modules/d3-shape/src/curve/catmullRom.js
new file mode 100644
index 00000000..3a4b1a75
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/catmullRom.js
@@ -0,0 +1,88 @@
+import {epsilon} from "../math.js";
+import {Cardinal} from "./cardinal.js";
+
+export function point(that, x, y) {
+ var x1 = that._x1,
+ y1 = that._y1,
+ x2 = that._x2,
+ y2 = that._y2;
+
+ if (that._l01_a > epsilon) {
+ var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a,
+ n = 3 * that._l01_a * (that._l01_a + that._l12_a);
+ x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n;
+ y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n;
+ }
+
+ if (that._l23_a > epsilon) {
+ var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a,
+ m = 3 * that._l23_a * (that._l23_a + that._l12_a);
+ x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m;
+ y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m;
+ }
+
+ that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2);
+}
+
+function CatmullRom(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRom.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x2, this._y2); break;
+ case 3: this.point(this._x2, this._y2); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; // falls through
+ default: point(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
diff --git a/node_modules/d3-shape/src/curve/catmullRomClosed.js b/node_modules/d3-shape/src/curve/catmullRomClosed.js
new file mode 100644
index 00000000..6c6b9655
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/catmullRomClosed.js
@@ -0,0 +1,74 @@
+import {CardinalClosed} from "./cardinalClosed.js";
+import noop from "../noop.js";
+import {point} from "./catmullRom.js";
+
+function CatmullRomClosed(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRomClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 =
+ this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 1: {
+ this._context.moveTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 2: {
+ this._context.lineTo(this._x3, this._y3);
+ this._context.closePath();
+ break;
+ }
+ case 3: {
+ this.point(this._x3, this._y3);
+ this.point(this._x4, this._y4);
+ this.point(this._x5, this._y5);
+ break;
+ }
+ }
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; this._x3 = x, this._y3 = y; break;
+ case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break;
+ case 2: this._point = 3; this._x5 = x, this._y5 = y; break;
+ default: point(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
diff --git a/node_modules/d3-shape/src/curve/catmullRomOpen.js b/node_modules/d3-shape/src/curve/catmullRomOpen.js
new file mode 100644
index 00000000..a372a70d
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/catmullRomOpen.js
@@ -0,0 +1,62 @@
+import {CardinalOpen} from "./cardinalOpen.js";
+import {point} from "./catmullRom.js";
+
+function CatmullRomOpen(context, alpha) {
+ this._context = context;
+ this._alpha = alpha;
+}
+
+CatmullRomOpen.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 = this._x2 =
+ this._y0 = this._y1 = this._y2 = NaN;
+ this._l01_a = this._l12_a = this._l23_a =
+ this._l01_2a = this._l12_2a = this._l23_2a =
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+
+ if (this._point) {
+ var x23 = this._x2 - x,
+ y23 = this._y2 - y;
+ this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
+ }
+
+ switch (this._point) {
+ case 0: this._point = 1; break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break;
+ case 3: this._point = 4; // falls through
+ default: point(this, x, y); break;
+ }
+
+ this._l01_a = this._l12_a, this._l12_a = this._l23_a;
+ this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
+ this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
+ this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
+ }
+};
+
+export default (function custom(alpha) {
+
+ function catmullRom(context) {
+ return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0);
+ }
+
+ catmullRom.alpha = function(alpha) {
+ return custom(+alpha);
+ };
+
+ return catmullRom;
+})(0.5);
diff --git a/node_modules/d3-shape/src/curve/linear.js b/node_modules/d3-shape/src/curve/linear.js
new file mode 100644
index 00000000..68e169ad
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/linear.js
@@ -0,0 +1,31 @@
+function Linear(context) {
+ this._context = context;
+}
+
+Linear.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; // falls through
+ default: this._context.lineTo(x, y); break;
+ }
+ }
+};
+
+export default function(context) {
+ return new Linear(context);
+}
diff --git a/node_modules/d3-shape/src/curve/linearClosed.js b/node_modules/d3-shape/src/curve/linearClosed.js
new file mode 100644
index 00000000..e25606ff
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/linearClosed.js
@@ -0,0 +1,25 @@
+import noop from "../noop.js";
+
+function LinearClosed(context) {
+ this._context = context;
+}
+
+LinearClosed.prototype = {
+ areaStart: noop,
+ areaEnd: noop,
+ lineStart: function() {
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (this._point) this._context.closePath();
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ if (this._point) this._context.lineTo(x, y);
+ else this._point = 1, this._context.moveTo(x, y);
+ }
+};
+
+export default function(context) {
+ return new LinearClosed(context);
+}
diff --git a/node_modules/d3-shape/src/curve/monotone.js b/node_modules/d3-shape/src/curve/monotone.js
new file mode 100644
index 00000000..2599031c
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/monotone.js
@@ -0,0 +1,104 @@
+function sign(x) {
+ return x < 0 ? -1 : 1;
+}
+
+// Calculate the slopes of the tangents (Hermite-type interpolation) based on
+// the following paper: Steffen, M. 1990. A Simple Method for Monotonic
+// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO.
+// NOV(II), P. 443, 1990.
+function slope3(that, x2, y2) {
+ var h0 = that._x1 - that._x0,
+ h1 = x2 - that._x1,
+ s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0),
+ s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0),
+ p = (s0 * h1 + s1 * h0) / (h0 + h1);
+ return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0;
+}
+
+// Calculate a one-sided slope.
+function slope2(that, t) {
+ var h = that._x1 - that._x0;
+ return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t;
+}
+
+// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations
+// "you can express cubic Hermite interpolation in terms of cubic Bézier curves
+// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1".
+function point(that, t0, t1) {
+ var x0 = that._x0,
+ y0 = that._y0,
+ x1 = that._x1,
+ y1 = that._y1,
+ dx = (x1 - x0) / 3;
+ that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1);
+}
+
+function MonotoneX(context) {
+ this._context = context;
+}
+
+MonotoneX.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x0 = this._x1 =
+ this._y0 = this._y1 =
+ this._t0 = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ switch (this._point) {
+ case 2: this._context.lineTo(this._x1, this._y1); break;
+ case 3: point(this, this._t0, slope2(this, this._t0)); break;
+ }
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ var t1 = NaN;
+
+ x = +x, y = +y;
+ if (x === this._x1 && y === this._y1) return; // Ignore coincident points.
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; break;
+ case 2: this._point = 3; point(this, slope2(this, t1 = slope3(this, x, y)), t1); break;
+ default: point(this, this._t0, t1 = slope3(this, x, y)); break;
+ }
+
+ this._x0 = this._x1, this._x1 = x;
+ this._y0 = this._y1, this._y1 = y;
+ this._t0 = t1;
+ }
+}
+
+function MonotoneY(context) {
+ this._context = new ReflectContext(context);
+}
+
+(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) {
+ MonotoneX.prototype.point.call(this, y, x);
+};
+
+function ReflectContext(context) {
+ this._context = context;
+}
+
+ReflectContext.prototype = {
+ moveTo: function(x, y) { this._context.moveTo(y, x); },
+ closePath: function() { this._context.closePath(); },
+ lineTo: function(x, y) { this._context.lineTo(y, x); },
+ bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); }
+};
+
+export function monotoneX(context) {
+ return new MonotoneX(context);
+}
+
+export function monotoneY(context) {
+ return new MonotoneY(context);
+}
diff --git a/node_modules/d3-shape/src/curve/natural.js b/node_modules/d3-shape/src/curve/natural.js
new file mode 100644
index 00000000..d51eb513
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/natural.js
@@ -0,0 +1,65 @@
+function Natural(context) {
+ this._context = context;
+}
+
+Natural.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x = [];
+ this._y = [];
+ },
+ lineEnd: function() {
+ var x = this._x,
+ y = this._y,
+ n = x.length;
+
+ if (n) {
+ this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]);
+ if (n === 2) {
+ this._context.lineTo(x[1], y[1]);
+ } else {
+ var px = controlPoints(x),
+ py = controlPoints(y);
+ for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) {
+ this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]);
+ }
+ }
+ }
+
+ if (this._line || (this._line !== 0 && n === 1)) this._context.closePath();
+ this._line = 1 - this._line;
+ this._x = this._y = null;
+ },
+ point: function(x, y) {
+ this._x.push(+x);
+ this._y.push(+y);
+ }
+};
+
+// See https://www.particleincell.com/2012/bezier-splines/ for derivation.
+function controlPoints(x) {
+ var i,
+ n = x.length - 1,
+ m,
+ a = new Array(n),
+ b = new Array(n),
+ r = new Array(n);
+ a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1];
+ for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1];
+ a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n];
+ for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1];
+ a[n - 1] = r[n - 1] / b[n - 1];
+ for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i];
+ b[n - 1] = (x[n] + a[n - 1]) / 2;
+ for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1];
+ return [a, b];
+}
+
+export default function(context) {
+ return new Natural(context);
+}
diff --git a/node_modules/d3-shape/src/curve/radial.js b/node_modules/d3-shape/src/curve/radial.js
new file mode 100644
index 00000000..730c989f
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/radial.js
@@ -0,0 +1,36 @@
+import curveLinear from "./linear.js";
+
+export var curveRadialLinear = curveRadial(curveLinear);
+
+function Radial(curve) {
+ this._curve = curve;
+}
+
+Radial.prototype = {
+ areaStart: function() {
+ this._curve.areaStart();
+ },
+ areaEnd: function() {
+ this._curve.areaEnd();
+ },
+ lineStart: function() {
+ this._curve.lineStart();
+ },
+ lineEnd: function() {
+ this._curve.lineEnd();
+ },
+ point: function(a, r) {
+ this._curve.point(r * Math.sin(a), r * -Math.cos(a));
+ }
+};
+
+export default function curveRadial(curve) {
+
+ function radial(context) {
+ return new Radial(curve(context));
+ }
+
+ radial._curve = curve;
+
+ return radial;
+}
diff --git a/node_modules/d3-shape/src/curve/step.js b/node_modules/d3-shape/src/curve/step.js
new file mode 100644
index 00000000..6f6aa05a
--- /dev/null
+++ b/node_modules/d3-shape/src/curve/step.js
@@ -0,0 +1,53 @@
+function Step(context, t) {
+ this._context = context;
+ this._t = t;
+}
+
+Step.prototype = {
+ areaStart: function() {
+ this._line = 0;
+ },
+ areaEnd: function() {
+ this._line = NaN;
+ },
+ lineStart: function() {
+ this._x = this._y = NaN;
+ this._point = 0;
+ },
+ lineEnd: function() {
+ if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y);
+ if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();
+ if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line;
+ },
+ point: function(x, y) {
+ x = +x, y = +y;
+ switch (this._point) {
+ case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;
+ case 1: this._point = 2; // falls through
+ default: {
+ if (this._t <= 0) {
+ this._context.lineTo(this._x, y);
+ this._context.lineTo(x, y);
+ } else {
+ var x1 = this._x * (1 - this._t) + x * this._t;
+ this._context.lineTo(x1, this._y);
+ this._context.lineTo(x1, y);
+ }
+ break;
+ }
+ }
+ this._x = x, this._y = y;
+ }
+};
+
+export default function(context) {
+ return new Step(context, 0.5);
+}
+
+export function stepBefore(context) {
+ return new Step(context, 0);
+}
+
+export function stepAfter(context) {
+ return new Step(context, 1);
+}
diff --git a/node_modules/d3-shape/src/descending.js b/node_modules/d3-shape/src/descending.js
new file mode 100644
index 00000000..a4e2d7fb
--- /dev/null
+++ b/node_modules/d3-shape/src/descending.js
@@ -0,0 +1,3 @@
+export default function(a, b) {
+ return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+}
diff --git a/node_modules/d3-shape/src/identity.js b/node_modules/d3-shape/src/identity.js
new file mode 100644
index 00000000..ca161abe
--- /dev/null
+++ b/node_modules/d3-shape/src/identity.js
@@ -0,0 +1,3 @@
+export default function(d) {
+ return d;
+}
diff --git a/node_modules/d3-shape/src/index.js b/node_modules/d3-shape/src/index.js
new file mode 100644
index 00000000..5bc320f8
--- /dev/null
+++ b/node_modules/d3-shape/src/index.js
@@ -0,0 +1,53 @@
+export {default as arc} from "./arc.js";
+export {default as area} from "./area.js";
+export {default as line} from "./line.js";
+export {default as pie} from "./pie.js";
+export {default as areaRadial, default as radialArea} from "./areaRadial.js"; // Note: radialArea is deprecated!
+export {default as lineRadial, default as radialLine} from "./lineRadial.js"; // Note: radialLine is deprecated!
+export {default as pointRadial} from "./pointRadial.js";
+export {link, linkHorizontal, linkVertical, linkRadial} from "./link.js";
+
+export {default as symbol, symbolsStroke, symbolsFill, symbolsFill as symbols} from "./symbol.js";
+export {default as symbolAsterisk} from "./symbol/asterisk.js";
+export {default as symbolCircle} from "./symbol/circle.js";
+export {default as symbolCross} from "./symbol/cross.js";
+export {default as symbolDiamond} from "./symbol/diamond.js";
+export {default as symbolDiamond2} from "./symbol/diamond2.js";
+export {default as symbolPlus} from "./symbol/plus.js";
+export {default as symbolSquare} from "./symbol/square.js";
+export {default as symbolSquare2} from "./symbol/square2.js";
+export {default as symbolStar} from "./symbol/star.js";
+export {default as symbolTriangle} from "./symbol/triangle.js";
+export {default as symbolTriangle2} from "./symbol/triangle2.js";
+export {default as symbolWye} from "./symbol/wye.js";
+export {default as symbolX} from "./symbol/x.js";
+
+export {default as curveBasisClosed} from "./curve/basisClosed.js";
+export {default as curveBasisOpen} from "./curve/basisOpen.js";
+export {default as curveBasis} from "./curve/basis.js";
+export {bumpX as curveBumpX, bumpY as curveBumpY} from "./curve/bump.js";
+export {default as curveBundle} from "./curve/bundle.js";
+export {default as curveCardinalClosed} from "./curve/cardinalClosed.js";
+export {default as curveCardinalOpen} from "./curve/cardinalOpen.js";
+export {default as curveCardinal} from "./curve/cardinal.js";
+export {default as curveCatmullRomClosed} from "./curve/catmullRomClosed.js";
+export {default as curveCatmullRomOpen} from "./curve/catmullRomOpen.js";
+export {default as curveCatmullRom} from "./curve/catmullRom.js";
+export {default as curveLinearClosed} from "./curve/linearClosed.js";
+export {default as curveLinear} from "./curve/linear.js";
+export {monotoneX as curveMonotoneX, monotoneY as curveMonotoneY} from "./curve/monotone.js";
+export {default as curveNatural} from "./curve/natural.js";
+export {default as curveStep, stepAfter as curveStepAfter, stepBefore as curveStepBefore} from "./curve/step.js";
+
+export {default as stack} from "./stack.js";
+export {default as stackOffsetExpand} from "./offset/expand.js";
+export {default as stackOffsetDiverging} from "./offset/diverging.js";
+export {default as stackOffsetNone} from "./offset/none.js";
+export {default as stackOffsetSilhouette} from "./offset/silhouette.js";
+export {default as stackOffsetWiggle} from "./offset/wiggle.js";
+export {default as stackOrderAppearance} from "./order/appearance.js";
+export {default as stackOrderAscending} from "./order/ascending.js";
+export {default as stackOrderDescending} from "./order/descending.js";
+export {default as stackOrderInsideOut} from "./order/insideOut.js";
+export {default as stackOrderNone} from "./order/none.js";
+export {default as stackOrderReverse} from "./order/reverse.js";
diff --git a/node_modules/d3-shape/src/line.js b/node_modules/d3-shape/src/line.js
new file mode 100644
index 00000000..1ad92b23
--- /dev/null
+++ b/node_modules/d3-shape/src/line.js
@@ -0,0 +1,57 @@
+import {path} from "d3-path";
+import array from "./array.js";
+import constant from "./constant.js";
+import curveLinear from "./curve/linear.js";
+import {x as pointX, y as pointY} from "./point.js";
+
+export default function(x, y) {
+ var defined = constant(true),
+ context = null,
+ curve = curveLinear,
+ output = null;
+
+ x = typeof x === "function" ? x : (x === undefined) ? pointX : constant(x);
+ y = typeof y === "function" ? y : (y === undefined) ? pointY : constant(y);
+
+ function line(data) {
+ var i,
+ n = (data = array(data)).length,
+ d,
+ defined0 = false,
+ buffer;
+
+ if (context == null) output = curve(buffer = path());
+
+ for (i = 0; i <= n; ++i) {
+ if (!(i < n && defined(d = data[i], i, data)) === defined0) {
+ if (defined0 = !defined0) output.lineStart();
+ else output.lineEnd();
+ }
+ if (defined0) output.point(+x(d, i, data), +y(d, i, data));
+ }
+
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ line.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), line) : x;
+ };
+
+ line.y = function(_) {
+ return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), line) : y;
+ };
+
+ line.defined = function(_) {
+ return arguments.length ? (defined = typeof _ === "function" ? _ : constant(!!_), line) : defined;
+ };
+
+ line.curve = function(_) {
+ return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;
+ };
+
+ line.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;
+ };
+
+ return line;
+}
diff --git a/node_modules/d3-shape/src/lineRadial.js b/node_modules/d3-shape/src/lineRadial.js
new file mode 100644
index 00000000..beaf5773
--- /dev/null
+++ b/node_modules/d3-shape/src/lineRadial.js
@@ -0,0 +1,19 @@
+import curveRadial, {curveRadialLinear} from "./curve/radial.js";
+import line from "./line.js";
+
+export function lineRadial(l) {
+ var c = l.curve;
+
+ l.angle = l.x, delete l.x;
+ l.radius = l.y, delete l.y;
+
+ l.curve = function(_) {
+ return arguments.length ? c(curveRadial(_)) : c()._curve;
+ };
+
+ return l;
+}
+
+export default function() {
+ return lineRadial(line().curve(curveRadialLinear));
+}
diff --git a/node_modules/d3-shape/src/link.js b/node_modules/d3-shape/src/link.js
new file mode 100644
index 00000000..bb4542ca
--- /dev/null
+++ b/node_modules/d3-shape/src/link.js
@@ -0,0 +1,72 @@
+import {path} from "d3-path";
+import {slice} from "./array.js";
+import constant from "./constant.js";
+import {bumpX, bumpY, bumpRadial} from "./curve/bump.js";
+import {x as pointX, y as pointY} from "./point.js";
+
+function linkSource(d) {
+ return d.source;
+}
+
+function linkTarget(d) {
+ return d.target;
+}
+
+export function link(curve) {
+ let source = linkSource;
+ let target = linkTarget;
+ let x = pointX;
+ let y = pointY;
+ let context = null;
+ let output = null;
+
+ function link() {
+ let buffer;
+ const argv = slice.call(arguments);
+ const s = source.apply(this, argv);
+ const t = target.apply(this, argv);
+ if (context == null) output = curve(buffer = path());
+ output.lineStart();
+ argv[0] = s, output.point(+x.apply(this, argv), +y.apply(this, argv));
+ argv[0] = t, output.point(+x.apply(this, argv), +y.apply(this, argv));
+ output.lineEnd();
+ if (buffer) return output = null, buffer + "" || null;
+ }
+
+ link.source = function(_) {
+ return arguments.length ? (source = _, link) : source;
+ };
+
+ link.target = function(_) {
+ return arguments.length ? (target = _, link) : target;
+ };
+
+ link.x = function(_) {
+ return arguments.length ? (x = typeof _ === "function" ? _ : constant(+_), link) : x;
+ };
+
+ link.y = function(_) {
+ return arguments.length ? (y = typeof _ === "function" ? _ : constant(+_), link) : y;
+ };
+
+ link.context = function(_) {
+ return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), link) : context;
+ };
+
+ return link;
+}
+
+export function linkHorizontal() {
+ return link(bumpX);
+}
+
+export function linkVertical() {
+ return link(bumpY);
+}
+
+export function linkRadial() {
+ const l = link(bumpRadial);
+ l.angle = l.x, delete l.x;
+ l.radius = l.y, delete l.y;
+ return l;
+}
diff --git a/node_modules/d3-shape/src/math.js b/node_modules/d3-shape/src/math.js
new file mode 100644
index 00000000..272303db
--- /dev/null
+++ b/node_modules/d3-shape/src/math.js
@@ -0,0 +1,20 @@
+export const abs = Math.abs;
+export const atan2 = Math.atan2;
+export const cos = Math.cos;
+export const max = Math.max;
+export const min = Math.min;
+export const sin = Math.sin;
+export const sqrt = Math.sqrt;
+
+export const epsilon = 1e-12;
+export const pi = Math.PI;
+export const halfPi = pi / 2;
+export const tau = 2 * pi;
+
+export function acos(x) {
+ return x > 1 ? 0 : x < -1 ? pi : Math.acos(x);
+}
+
+export function asin(x) {
+ return x >= 1 ? halfPi : x <= -1 ? -halfPi : Math.asin(x);
+}
diff --git a/node_modules/d3-shape/src/noop.js b/node_modules/d3-shape/src/noop.js
new file mode 100644
index 00000000..6ab80bc8
--- /dev/null
+++ b/node_modules/d3-shape/src/noop.js
@@ -0,0 +1 @@
+export default function() {}
diff --git a/node_modules/d3-shape/src/offset/diverging.js b/node_modules/d3-shape/src/offset/diverging.js
new file mode 100644
index 00000000..45a5fff6
--- /dev/null
+++ b/node_modules/d3-shape/src/offset/diverging.js
@@ -0,0 +1,14 @@
+export default function(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) {
+ for (yp = yn = 0, i = 0; i < n; ++i) {
+ if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) {
+ d[0] = yp, d[1] = yp += dy;
+ } else if (dy < 0) {
+ d[1] = yn, d[0] = yn += dy;
+ } else {
+ d[0] = 0, d[1] = dy;
+ }
+ }
+ }
+}
diff --git a/node_modules/d3-shape/src/offset/expand.js b/node_modules/d3-shape/src/offset/expand.js
new file mode 100644
index 00000000..965bea1e
--- /dev/null
+++ b/node_modules/d3-shape/src/offset/expand.js
@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) {
+ for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0;
+ if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y;
+ }
+ none(series, order);
+}
diff --git a/node_modules/d3-shape/src/offset/none.js b/node_modules/d3-shape/src/offset/none.js
new file mode 100644
index 00000000..d8e11dcb
--- /dev/null
+++ b/node_modules/d3-shape/src/offset/none.js
@@ -0,0 +1,9 @@
+export default function(series, order) {
+ if (!((n = series.length) > 1)) return;
+ for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) {
+ s0 = s1, s1 = series[order[i]];
+ for (j = 0; j < m; ++j) {
+ s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1];
+ }
+ }
+}
diff --git a/node_modules/d3-shape/src/offset/silhouette.js b/node_modules/d3-shape/src/offset/silhouette.js
new file mode 100644
index 00000000..87829bec
--- /dev/null
+++ b/node_modules/d3-shape/src/offset/silhouette.js
@@ -0,0 +1,10 @@
+import none from "./none.js";
+
+export default function(series, order) {
+ if (!((n = series.length) > 0)) return;
+ for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) {
+ for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0;
+ s0[j][1] += s0[j][0] = -y / 2;
+ }
+ none(series, order);
+}
diff --git a/node_modules/d3-shape/src/offset/wiggle.js b/node_modules/d3-shape/src/offset/wiggle.js
new file mode 100644
index 00000000..8db717cd
--- /dev/null
+++ b/node_modules/d3-shape/src/offset/wiggle.js
@@ -0,0 +1,24 @@
+import none from "./none.js";
+
+export default function(series, order) {
+ if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return;
+ for (var y = 0, j = 1, s0, m, n; j < m; ++j) {
+ for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) {
+ var si = series[order[i]],
+ sij0 = si[j][1] || 0,
+ sij1 = si[j - 1][1] || 0,
+ s3 = (sij0 - sij1) / 2;
+ for (var k = 0; k < i; ++k) {
+ var sk = series[order[k]],
+ skj0 = sk[j][1] || 0,
+ skj1 = sk[j - 1][1] || 0;
+ s3 += skj0 - skj1;
+ }
+ s1 += sij0, s2 += s3 * sij0;
+ }
+ s0[j - 1][1] += s0[j - 1][0] = y;
+ if (s1) y -= s2 / s1;
+ }
+ s0[j - 1][1] += s0[j - 1][0] = y;
+ none(series, order);
+}
diff --git a/node_modules/d3-shape/src/order/appearance.js b/node_modules/d3-shape/src/order/appearance.js
new file mode 100644
index 00000000..e052924b
--- /dev/null
+++ b/node_modules/d3-shape/src/order/appearance.js
@@ -0,0 +1,12 @@
+import none from "./none.js";
+
+export default function(series) {
+ var peaks = series.map(peak);
+ return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; });
+}
+
+function peak(series) {
+ var i = -1, j = 0, n = series.length, vi, vj = -Infinity;
+ while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i;
+ return j;
+}
diff --git a/node_modules/d3-shape/src/order/ascending.js b/node_modules/d3-shape/src/order/ascending.js
new file mode 100644
index 00000000..e0d28e3e
--- /dev/null
+++ b/node_modules/d3-shape/src/order/ascending.js
@@ -0,0 +1,12 @@
+import none from "./none.js";
+
+export default function(series) {
+ var sums = series.map(sum);
+ return none(series).sort(function(a, b) { return sums[a] - sums[b]; });
+}
+
+export function sum(series) {
+ var s = 0, i = -1, n = series.length, v;
+ while (++i < n) if (v = +series[i][1]) s += v;
+ return s;
+}
diff --git a/node_modules/d3-shape/src/order/descending.js b/node_modules/d3-shape/src/order/descending.js
new file mode 100644
index 00000000..dd272014
--- /dev/null
+++ b/node_modules/d3-shape/src/order/descending.js
@@ -0,0 +1,5 @@
+import ascending from "./ascending.js";
+
+export default function(series) {
+ return ascending(series).reverse();
+}
diff --git a/node_modules/d3-shape/src/order/insideOut.js b/node_modules/d3-shape/src/order/insideOut.js
new file mode 100644
index 00000000..b0b2abda
--- /dev/null
+++ b/node_modules/d3-shape/src/order/insideOut.js
@@ -0,0 +1,27 @@
+import appearance from "./appearance.js";
+import {sum} from "./ascending.js";
+
+export default function(series) {
+ var n = series.length,
+ i,
+ j,
+ sums = series.map(sum),
+ order = appearance(series),
+ top = 0,
+ bottom = 0,
+ tops = [],
+ bottoms = [];
+
+ for (i = 0; i < n; ++i) {
+ j = order[i];
+ if (top < bottom) {
+ top += sums[j];
+ tops.push(j);
+ } else {
+ bottom += sums[j];
+ bottoms.push(j);
+ }
+ }
+
+ return bottoms.reverse().concat(tops);
+}
diff --git a/node_modules/d3-shape/src/order/none.js b/node_modules/d3-shape/src/order/none.js
new file mode 100644
index 00000000..b0d7d6f5
--- /dev/null
+++ b/node_modules/d3-shape/src/order/none.js
@@ -0,0 +1,5 @@
+export default function(series) {
+ var n = series.length, o = new Array(n);
+ while (--n >= 0) o[n] = n;
+ return o;
+}
diff --git a/node_modules/d3-shape/src/order/reverse.js b/node_modules/d3-shape/src/order/reverse.js
new file mode 100644
index 00000000..8380ca04
--- /dev/null
+++ b/node_modules/d3-shape/src/order/reverse.js
@@ -0,0 +1,5 @@
+import none from "./none.js";
+
+export default function(series) {
+ return none(series).reverse();
+}
diff --git a/node_modules/d3-shape/src/pie.js b/node_modules/d3-shape/src/pie.js
new file mode 100644
index 00000000..6748f45f
--- /dev/null
+++ b/node_modules/d3-shape/src/pie.js
@@ -0,0 +1,80 @@
+import array from "./array.js";
+import constant from "./constant.js";
+import descending from "./descending.js";
+import identity from "./identity.js";
+import {tau} from "./math.js";
+
+export default function() {
+ var value = identity,
+ sortValues = descending,
+ sort = null,
+ startAngle = constant(0),
+ endAngle = constant(tau),
+ padAngle = constant(0);
+
+ function pie(data) {
+ var i,
+ n = (data = array(data)).length,
+ j,
+ k,
+ sum = 0,
+ index = new Array(n),
+ arcs = new Array(n),
+ a0 = +startAngle.apply(this, arguments),
+ da = Math.min(tau, Math.max(-tau, endAngle.apply(this, arguments) - a0)),
+ a1,
+ p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)),
+ pa = p * (da < 0 ? -1 : 1),
+ v;
+
+ for (i = 0; i < n; ++i) {
+ if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) {
+ sum += v;
+ }
+ }
+
+ // Optionally sort the arcs by previously-computed values or by data.
+ if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); });
+ else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); });
+
+ // Compute the arcs! They are stored in the original data's order.
+ for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) {
+ j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = {
+ data: data[j],
+ index: i,
+ value: v,
+ startAngle: a0,
+ endAngle: a1,
+ padAngle: p
+ };
+ }
+
+ return arcs;
+ }
+
+ pie.value = function(_) {
+ return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), pie) : value;
+ };
+
+ pie.sortValues = function(_) {
+ return arguments.length ? (sortValues = _, sort = null, pie) : sortValues;
+ };
+
+ pie.sort = function(_) {
+ return arguments.length ? (sort = _, sortValues = null, pie) : sort;
+ };
+
+ pie.startAngle = function(_) {
+ return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), pie) : startAngle;
+ };
+
+ pie.endAngle = function(_) {
+ return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), pie) : endAngle;
+ };
+
+ pie.padAngle = function(_) {
+ return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), pie) : padAngle;
+ };
+
+ return pie;
+}
diff --git a/node_modules/d3-shape/src/point.js b/node_modules/d3-shape/src/point.js
new file mode 100644
index 00000000..c3452573
--- /dev/null
+++ b/node_modules/d3-shape/src/point.js
@@ -0,0 +1,7 @@
+export function x(p) {
+ return p[0];
+}
+
+export function y(p) {
+ return p[1];
+}
diff --git a/node_modules/d3-shape/src/pointRadial.js b/node_modules/d3-shape/src/pointRadial.js
new file mode 100644
index 00000000..1cccb705
--- /dev/null
+++ b/node_modules/d3-shape/src/pointRadial.js
@@ -0,0 +1,3 @@
+export default function(x, y) {
+ return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)];
+}
diff --git a/node_modules/d3-shape/src/stack.js b/node_modules/d3-shape/src/stack.js
new file mode 100644
index 00000000..c4d30b1b
--- /dev/null
+++ b/node_modules/d3-shape/src/stack.js
@@ -0,0 +1,58 @@
+import array from "./array.js";
+import constant from "./constant.js";
+import offsetNone from "./offset/none.js";
+import orderNone from "./order/none.js";
+
+function stackValue(d, key) {
+ return d[key];
+}
+
+function stackSeries(key) {
+ const series = [];
+ series.key = key;
+ return series;
+}
+
+export default function() {
+ var keys = constant([]),
+ order = orderNone,
+ offset = offsetNone,
+ value = stackValue;
+
+ function stack(data) {
+ var sz = Array.from(keys.apply(this, arguments), stackSeries),
+ i, n = sz.length, j = -1,
+ oz;
+
+ for (const d of data) {
+ for (i = 0, ++j; i < n; ++i) {
+ (sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d;
+ }
+ }
+
+ for (i = 0, oz = array(order(sz)); i < n; ++i) {
+ sz[oz[i]].index = i;
+ }
+
+ offset(sz, oz);
+ return sz;
+ }
+
+ stack.keys = function(_) {
+ return arguments.length ? (keys = typeof _ === "function" ? _ : constant(Array.from(_)), stack) : keys;
+ };
+
+ stack.value = function(_) {
+ return arguments.length ? (value = typeof _ === "function" ? _ : constant(+_), stack) : value;
+ };
+
+ stack.order = function(_) {
+ return arguments.length ? (order = _ == null ? orderNone : typeof _ === "function" ? _ : constant(Array.from(_)), stack) : order;
+ };
+
+ stack.offset = function(_) {
+ return arguments.length ? (offset = _ == null ? offsetNone : _, stack) : offset;
+ };
+
+ return stack;
+}
diff --git a/node_modules/d3-shape/src/symbol.js b/node_modules/d3-shape/src/symbol.js
new file mode 100644
index 00000000..2882cc02
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol.js
@@ -0,0 +1,65 @@
+import {path} from "d3-path";
+import constant from "./constant.js";
+import asterisk from "./symbol/asterisk.js";
+import circle from "./symbol/circle.js";
+import cross from "./symbol/cross.js";
+import diamond from "./symbol/diamond.js";
+import diamond2 from "./symbol/diamond2.js";
+import plus from "./symbol/plus.js";
+import square from "./symbol/square.js";
+import square2 from "./symbol/square2.js";
+import star from "./symbol/star.js";
+import triangle from "./symbol/triangle.js";
+import triangle2 from "./symbol/triangle2.js";
+import wye from "./symbol/wye.js";
+import x from "./symbol/x.js";
+
+// These symbols are designed to be filled.
+export const symbolsFill = [
+ circle,
+ cross,
+ diamond,
+ square,
+ star,
+ triangle,
+ wye
+];
+
+// These symbols are designed to be stroked (with a width of 1.5px and round caps).
+export const symbolsStroke = [
+ circle,
+ plus,
+ x,
+ triangle2,
+ asterisk,
+ square2,
+ diamond2
+];
+
+export default function Symbol(type, size) {
+ let context = null;
+
+ type = typeof type === "function" ? type : constant(type || circle);
+ size = typeof size === "function" ? size : constant(size === undefined ? 64 : +size);
+
+ function symbol() {
+ let buffer;
+ if (!context) context = buffer = path();
+ type.apply(this, arguments).draw(context, +size.apply(this, arguments));
+ if (buffer) return context = null, buffer + "" || null;
+ }
+
+ symbol.type = function(_) {
+ return arguments.length ? (type = typeof _ === "function" ? _ : constant(_), symbol) : type;
+ };
+
+ symbol.size = function(_) {
+ return arguments.length ? (size = typeof _ === "function" ? _ : constant(+_), symbol) : size;
+ };
+
+ symbol.context = function(_) {
+ return arguments.length ? (context = _ == null ? null : _, symbol) : context;
+ };
+
+ return symbol;
+}
diff --git a/node_modules/d3-shape/src/symbol/asterisk.js b/node_modules/d3-shape/src/symbol/asterisk.js
new file mode 100644
index 00000000..05eb9a2b
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/asterisk.js
@@ -0,0 +1,17 @@
+import {min, sqrt} from "../math.js";
+
+const sqrt3 = sqrt(3);
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size + min(size / 28, 0.75)) * 0.59436;
+ const t = r / 2;
+ const u = t * sqrt3;
+ context.moveTo(0, r);
+ context.lineTo(0, -r);
+ context.moveTo(-u, -t);
+ context.lineTo(u, t);
+ context.moveTo(-u, t);
+ context.lineTo(u, -t);
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/circle.js b/node_modules/d3-shape/src/symbol/circle.js
new file mode 100644
index 00000000..485e06c3
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/circle.js
@@ -0,0 +1,9 @@
+import {pi, sqrt, tau} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size / pi);
+ context.moveTo(r, 0);
+ context.arc(0, 0, r, 0, tau);
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/cross.js b/node_modules/d3-shape/src/symbol/cross.js
new file mode 100644
index 00000000..5e586e91
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/cross.js
@@ -0,0 +1,20 @@
+import {sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size / 5) / 2;
+ context.moveTo(-3 * r, -r);
+ context.lineTo(-r, -r);
+ context.lineTo(-r, -3 * r);
+ context.lineTo(r, -3 * r);
+ context.lineTo(r, -r);
+ context.lineTo(3 * r, -r);
+ context.lineTo(3 * r, r);
+ context.lineTo(r, r);
+ context.lineTo(r, 3 * r);
+ context.lineTo(-r, 3 * r);
+ context.lineTo(-r, r);
+ context.lineTo(-3 * r, r);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/diamond.js b/node_modules/d3-shape/src/symbol/diamond.js
new file mode 100644
index 00000000..7f4d60ab
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/diamond.js
@@ -0,0 +1,16 @@
+import {sqrt} from "../math.js";
+
+const tan30 = sqrt(1 / 3);
+const tan30_2 = tan30 * 2;
+
+export default {
+ draw(context, size) {
+ const y = sqrt(size / tan30_2);
+ const x = y * tan30;
+ context.moveTo(0, -y);
+ context.lineTo(x, 0);
+ context.lineTo(0, y);
+ context.lineTo(-x, 0);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/diamond2.js b/node_modules/d3-shape/src/symbol/diamond2.js
new file mode 100644
index 00000000..f4df0b35
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/diamond2.js
@@ -0,0 +1,12 @@
+import {sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size) * 0.62625;
+ context.moveTo(0, -r);
+ context.lineTo(r, 0);
+ context.lineTo(0, r);
+ context.lineTo(-r, 0);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/plus.js b/node_modules/d3-shape/src/symbol/plus.js
new file mode 100644
index 00000000..bbb77415
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/plus.js
@@ -0,0 +1,11 @@
+import {min, sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size - min(size / 7, 2)) * 0.87559;
+ context.moveTo(-r, 0);
+ context.lineTo(r, 0);
+ context.moveTo(0, r);
+ context.lineTo(0, -r);
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/square.js b/node_modules/d3-shape/src/symbol/square.js
new file mode 100644
index 00000000..6a8d5dd4
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/square.js
@@ -0,0 +1,9 @@
+import {sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const w = sqrt(size);
+ const x = -w / 2;
+ context.rect(x, x, w, w);
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/square2.js b/node_modules/d3-shape/src/symbol/square2.js
new file mode 100644
index 00000000..508d5041
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/square2.js
@@ -0,0 +1,12 @@
+import {sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size) * 0.4431;
+ context.moveTo(r, r);
+ context.lineTo(r, -r);
+ context.lineTo(-r, -r);
+ context.lineTo(-r, r);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/star.js b/node_modules/d3-shape/src/symbol/star.js
new file mode 100644
index 00000000..e5000d94
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/star.js
@@ -0,0 +1,24 @@
+import {sin, cos, sqrt, pi, tau} from "../math.js";
+
+const ka = 0.89081309152928522810;
+const kr = sin(pi / 10) / sin(7 * pi / 10);
+const kx = sin(tau / 10) * kr;
+const ky = -cos(tau / 10) * kr;
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size * ka);
+ const x = kx * r;
+ const y = ky * r;
+ context.moveTo(0, -r);
+ context.lineTo(x, y);
+ for (let i = 1; i < 5; ++i) {
+ const a = tau * i / 5;
+ const c = cos(a);
+ const s = sin(a);
+ context.lineTo(s * r, -c * r);
+ context.lineTo(c * x - s * y, s * x + c * y);
+ }
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/triangle.js b/node_modules/d3-shape/src/symbol/triangle.js
new file mode 100644
index 00000000..023e8243
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/triangle.js
@@ -0,0 +1,13 @@
+import {sqrt} from "../math.js";
+
+const sqrt3 = sqrt(3);
+
+export default {
+ draw(context, size) {
+ const y = -sqrt(size / (sqrt3 * 3));
+ context.moveTo(0, y * 2);
+ context.lineTo(-sqrt3 * y, -y);
+ context.lineTo(sqrt3 * y, -y);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/triangle2.js b/node_modules/d3-shape/src/symbol/triangle2.js
new file mode 100644
index 00000000..6b189e47
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/triangle2.js
@@ -0,0 +1,15 @@
+import {sqrt} from "../math.js";
+
+const sqrt3 = sqrt(3);
+
+export default {
+ draw(context, size) {
+ const s = sqrt(size) * 0.6824;
+ const t = s / 2;
+ const u = (s * sqrt3) / 2; // cos(Math.PI / 6)
+ context.moveTo(0, -s);
+ context.lineTo(u, t);
+ context.lineTo(-u, t);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/wye.js b/node_modules/d3-shape/src/symbol/wye.js
new file mode 100644
index 00000000..b8fad359
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/wye.js
@@ -0,0 +1,25 @@
+import {sqrt} from "../math.js";
+
+const c = -0.5;
+const s = sqrt(3) / 2;
+const k = 1 / sqrt(12);
+const a = (k / 2 + 1) * 3;
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size / a);
+ const x0 = r / 2, y0 = r * k;
+ const x1 = x0, y1 = r * k + r;
+ const x2 = -x1, y2 = y1;
+ context.moveTo(x0, y0);
+ context.lineTo(x1, y1);
+ context.lineTo(x2, y2);
+ context.lineTo(c * x0 - s * y0, s * x0 + c * y0);
+ context.lineTo(c * x1 - s * y1, s * x1 + c * y1);
+ context.lineTo(c * x2 - s * y2, s * x2 + c * y2);
+ context.lineTo(c * x0 + s * y0, c * y0 - s * x0);
+ context.lineTo(c * x1 + s * y1, c * y1 - s * x1);
+ context.lineTo(c * x2 + s * y2, c * y2 - s * x2);
+ context.closePath();
+ }
+};
diff --git a/node_modules/d3-shape/src/symbol/x.js b/node_modules/d3-shape/src/symbol/x.js
new file mode 100644
index 00000000..1d8c829a
--- /dev/null
+++ b/node_modules/d3-shape/src/symbol/x.js
@@ -0,0 +1,11 @@
+import {min, sqrt} from "../math.js";
+
+export default {
+ draw(context, size) {
+ const r = sqrt(size - min(size / 6, 1.7)) * 0.6189;
+ context.moveTo(-r, -r);
+ context.lineTo(r, r);
+ context.moveTo(-r, r);
+ context.lineTo(r, -r);
+ }
+};
diff --git a/node_modules/d3-time-format/LICENSE b/node_modules/d3-time-format/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-time-format/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-time-format/README.md b/node_modules/d3-time-format/README.md
new file mode 100644
index 00000000..6388cc15
--- /dev/null
+++ b/node_modules/d3-time-format/README.md
@@ -0,0 +1,209 @@
+# d3-time-format
+
+This module provides a JavaScript implementation of the venerable [strptime](http://pubs.opengroup.org/onlinepubs/009695399/functions/strptime.html) and [strftime](http://pubs.opengroup.org/onlinepubs/007908799/xsh/strftime.html) functions from the C standard library, and can be used to parse or format [dates](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) in a variety of locale-specific representations. To format a date, create a [formatter](#locale_format) from a specifier (a string with the desired format *directives*, indicated by `%`); then pass a date to the formatter, which returns a string. For example, to convert the current date to a human-readable string:
+
+```js
+const formatTime = d3.timeFormat("%B %d, %Y");
+formatTime(new Date); // "June 30, 2015"
+```
+
+Likewise, to convert a string back to a date, create a [parser](#locale_parse):
+
+```js
+const parseTime = d3.timeParse("%B %d, %Y");
+parseTime("June 30, 2015"); // Tue Jun 30 2015 00:00:00 GMT-0700 (PDT)
+```
+
+You can implement more elaborate conditional time formats, too. For example, here’s a [multi-scale time format](https://bl.ocks.org/mbostock/4149176) using [time intervals](https://github.com/d3/d3-time):
+
+```js
+const formatMillisecond = d3.timeFormat(".%L"),
+ formatSecond = d3.timeFormat(":%S"),
+ formatMinute = d3.timeFormat("%I:%M"),
+ formatHour = d3.timeFormat("%I %p"),
+ formatDay = d3.timeFormat("%a %d"),
+ formatWeek = d3.timeFormat("%b %d"),
+ formatMonth = d3.timeFormat("%B"),
+ formatYear = d3.timeFormat("%Y");
+
+function multiFormat(date) {
+ return (d3.timeSecond(date) < date ? formatMillisecond
+ : d3.timeMinute(date) < date ? formatSecond
+ : d3.timeHour(date) < date ? formatMinute
+ : d3.timeDay(date) < date ? formatHour
+ : d3.timeMonth(date) < date ? (d3.timeWeek(date) < date ? formatDay : formatWeek)
+ : d3.timeYear(date) < date ? formatMonth
+ : formatYear)(date);
+}
+```
+
+This module is used by D3 [time scales](https://github.com/d3/d3-scale/blob/main/README.md#time-scales) to generate human-readable ticks.
+
+## Installing
+
+If you use npm, `npm install d3-time-format`. You can also download the [latest release on GitHub](https://github.com/d3/d3-time-format/releases/latest). For vanilla HTML in modern browsers, import d3-time-format from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-time-format’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+
+
+Locale files are published to npm and can be loaded using [d3.json](https://github.com/d3/d3-fetch/blob/main/README.md#json). For example, to set Russian as the default locale:
+
+```js
+d3.json("https://cdn.jsdelivr.net/npm/d3-time-format@3/locale/ru-RU.json").then(locale => {
+ d3.timeFormatDefaultLocale(locale);
+
+ const format = d3.timeFormat("%c");
+
+ console.log(format(new Date)); // понедельник, 5 декабря 2016 г. 10:31:59
+});
+```
+
+## API Reference
+
+# d3.timeFormat (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/defaultLocale.js)
+
+An alias for [*locale*.format](#locale_format) on the [default locale](#timeFormatDefaultLocale).
+
+# d3.timeParse (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/defaultLocale.js)
+
+An alias for [*locale*.parse](#locale_parse) on the [default locale](#timeFormatDefaultLocale).
+
+# d3.utcFormat (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/defaultLocale.js)
+
+An alias for [*locale*.utcFormat](#locale_utcFormat) on the [default locale](#timeFormatDefaultLocale).
+
+# d3.utcParse (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/defaultLocale.js)
+
+An alias for [*locale*.utcParse](#locale_utcParse) on the [default locale](#timeFormatDefaultLocale).
+
+# d3.isoFormat · [Source](https://github.com/d3/d3-time-format/blob/main/src/isoFormat.js)
+
+The full [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) UTC time formatter. Where available, this method will use [Date.toISOString](https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Date/toISOString) to format.
+
+# d3.isoParse · [Source](https://github.com/d3/d3-time-format/blob/main/src/isoParse.js)
+
+The full [ISO 8601](https://en.wikipedia.org/wiki/ISO_8601) UTC time parser. Where available, this method will use the [Date constructor](https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Date) to parse strings. If you depend on strict validation of the input format according to ISO 8601, you should construct a [UTC parser function](#utcParse):
+
+```js
+const strictIsoParse = d3.utcParse("%Y-%m-%dT%H:%M:%S.%LZ");
+```
+
+# locale .format (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/locale.js)
+
+Returns a new formatter for the given string *specifier*. The specifier string may contain the following directives:
+
+* `%a` - abbreviated weekday name.*
+* `%A` - full weekday name.*
+* `%b` - abbreviated month name.*
+* `%B` - full month name.*
+* `%c` - the locale’s date and time, such as `%x, %X`.*
+* `%d` - zero-padded day of the month as a decimal number [01,31].
+* `%e` - space-padded day of the month as a decimal number [ 1,31]; equivalent to `%_d`.
+* `%f` - microseconds as a decimal number [000000, 999999].
+* `%g` - ISO 8601 week-based year without century as a decimal number [00,99].
+* `%G` - ISO 8601 week-based year with century as a decimal number.
+* `%H` - hour (24-hour clock) as a decimal number [00,23].
+* `%I` - hour (12-hour clock) as a decimal number [01,12].
+* `%j` - day of the year as a decimal number [001,366].
+* `%m` - month as a decimal number [01,12].
+* `%M` - minute as a decimal number [00,59].
+* `%L` - milliseconds as a decimal number [000, 999].
+* `%p` - either AM or PM.*
+* `%q` - quarter of the year as a decimal number [1,4].
+* `%Q` - milliseconds since UNIX epoch.
+* `%s` - seconds since UNIX epoch.
+* `%S` - second as a decimal number [00,61].
+* `%u` - Monday-based (ISO 8601) weekday as a decimal number [1,7].
+* `%U` - Sunday-based week of the year as a decimal number [00,53].
+* `%V` - ISO 8601 week of the year as a decimal number [01, 53].
+* `%w` - Sunday-based weekday as a decimal number [0,6].
+* `%W` - Monday-based week of the year as a decimal number [00,53].
+* `%x` - the locale’s date, such as `%-m/%-d/%Y`.*
+* `%X` - the locale’s time, such as `%-I:%M:%S %p`.*
+* `%y` - year without century as a decimal number [00,99].
+* `%Y` - year with century as a decimal number, such as `1999`.
+* `%Z` - time zone offset, such as `-0700`, `-07:00`, `-07`, or `Z`.
+* `%%` - a literal percent sign (`%`).
+
+Directives marked with an asterisk (\*) may be affected by the [locale definition](#locales).
+
+For `%U`, all days in a new year preceding the first Sunday are considered to be in week 0. For `%W`, all days in a new year preceding the first Monday are considered to be in week 0. Week numbers are computed using [*interval*.count](https://github.com/d3/d3-time/blob/main/README.md#interval_count). For example, 2015-52 and 2016-00 represent Monday, December 28, 2015, while 2015-53 and 2016-01 represent Monday, January 4, 2016. This differs from the [ISO week date](https://en.wikipedia.org/wiki/ISO_week_date) specification (`%V`), which uses a more complicated definition!
+
+For `%V`,`%g` and `%G`, per the [strftime man page](http://man7.org/linux/man-pages/man3/strftime.3.html):
+
+> In this system, weeks start on a Monday, and are numbered from 01, for the first week, up to 52 or 53, for the last week. Week 1 is the first week where four or more days fall within the new year (or, synonymously, week 01 is: the first week of the year that contains a Thursday; or, the week that has 4 January in it). If the ISO week number belongs to the previous or next year, that year is used instead.
+
+The `%` sign indicating a directive may be immediately followed by a padding modifier:
+
+* `0` - zero-padding
+* `_` - space-padding
+* `-` - disable padding
+
+If no padding modifier is specified, the default is `0` for all directives except `%e`, which defaults to `_`. (In some implementations of strftime and strptime, a directive may include an optional field width or precision; this feature is not yet implemented.)
+
+The returned function formats a specified *[date](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date)*, returning the corresponding string.
+
+```js
+const formatMonth = d3.timeFormat("%B"),
+ formatDay = d3.timeFormat("%A"),
+ date = new Date(2014, 4, 1); // Thu May 01 2014 00:00:00 GMT-0700 (PDT)
+
+formatMonth(date); // "May"
+formatDay(date); // "Thursday"
+```
+
+# locale .parse (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/locale.js)
+
+Returns a new parser for the given string *specifier*. The specifier string may contain the same directives as [*locale*.format](#locale_format). The `%d` and `%e` directives are considered equivalent for parsing.
+
+The returned function parses a specified *string*, returning the corresponding [date](https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date) or null if the string could not be parsed according to this format’s specifier. Parsing is strict: if the specified string does not exactly match the associated specifier, this method returns null. For example, if the associated specifier is `%Y-%m-%dT%H:%M:%SZ`, then the string `"2011-07-01T19:15:28Z"` will be parsed as expected, but `"2011-07-01T19:15:28"`, `"2011-07-01 19:15:28"` and `"2011-07-01"` will return null. (Note that the literal `Z` here is different from the time zone offset directive `%Z`.) If a more flexible parser is desired, try multiple formats sequentially until one returns non-null.
+
+# locale .utcFormat (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/locale.js)
+
+Equivalent to [*locale*.format](#locale_format), except all directives are interpreted as [Coordinated Universal Time (UTC)](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) rather than local time.
+
+# locale .utcParse (specifier ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/locale.js)
+
+Equivalent to [*locale*.parse](#locale_parse), except all directives are interpreted as [Coordinated Universal Time (UTC)](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) rather than local time.
+
+### Locales
+
+# d3.timeFormatLocale (definition ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/locale.js)
+
+Returns a *locale* object for the specified *definition* with [*locale*.format](#locale_format), [*locale*.parse](#locale_parse), [*locale*.utcFormat](#locale_utcFormat), [*locale*.utcParse](#locale_utcParse) methods. The *definition* must include the following properties:
+
+* `dateTime` - the date and time (`%c`) format specifier (e.g. , `"%a %b %e %X %Y"`).
+* `date` - the date (`%x`) format specifier (e.g. , `"%m/%d/%Y"`).
+* `time` - the time (`%X`) format specifier (e.g. , `"%H:%M:%S"`).
+* `periods` - the A.M. and P.M. equivalents (e.g. , `["AM", "PM"]`).
+* `days` - the full names of the weekdays, starting with Sunday.
+* `shortDays` - the abbreviated names of the weekdays, starting with Sunday.
+* `months` - the full names of the months (starting with January).
+* `shortMonths` - the abbreviated names of the months (starting with January).
+
+For an example, see [Localized Time Axis II](https://bl.ocks.org/mbostock/805115ebaa574e771db1875a6d828949).
+
+# d3.timeFormatDefaultLocale (definition ) · [Source](https://github.com/d3/d3-time-format/blob/main/src/defaultLocale.js)
+
+Equivalent to [d3.timeFormatLocale](#timeFormatLocale), except it also redefines [d3.timeFormat](#timeFormat), [d3.timeParse](#timeParse), [d3.utcFormat](#utcFormat) and [d3.utcParse](#utcParse) to the new locale’s [*locale*.format](#locale_format), [*locale*.parse](#locale_parse), [*locale*.utcFormat](#locale_utcFormat) and [*locale*.utcParse](#locale_utcParse). If you do not set a default locale, it defaults to [U.S. English](https://github.com/d3/d3-time-format/blob/main/locale/en-US.json).
+
+For an example, see [Localized Time Axis](https://bl.ocks.org/mbostock/6f1cc065d4d172bcaf322e399aa8d62f).
diff --git a/node_modules/d3-time-format/dist/d3-time-format.js b/node_modules/d3-time-format/dist/d3-time-format.js
new file mode 100644
index 00000000..8fc09984
--- /dev/null
+++ b/node_modules/d3-time-format/dist/d3-time-format.js
@@ -0,0 +1,745 @@
+// https://d3js.org/d3-time-format/ v4.1.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-time')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-time'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+})(this, (function (exports, d3Time) { 'use strict';
+
+function localDate(d) {
+ if (0 <= d.y && d.y < 100) {
+ var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L);
+ date.setFullYear(d.y);
+ return date;
+ }
+ return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L);
+}
+
+function utcDate(d) {
+ if (0 <= d.y && d.y < 100) {
+ var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L));
+ date.setUTCFullYear(d.y);
+ return date;
+ }
+ return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L));
+}
+
+function newDate(y, m, d) {
+ return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0};
+}
+
+function formatLocale(locale) {
+ var locale_dateTime = locale.dateTime,
+ locale_date = locale.date,
+ locale_time = locale.time,
+ locale_periods = locale.periods,
+ locale_weekdays = locale.days,
+ locale_shortWeekdays = locale.shortDays,
+ locale_months = locale.months,
+ locale_shortMonths = locale.shortMonths;
+
+ var periodRe = formatRe(locale_periods),
+ periodLookup = formatLookup(locale_periods),
+ weekdayRe = formatRe(locale_weekdays),
+ weekdayLookup = formatLookup(locale_weekdays),
+ shortWeekdayRe = formatRe(locale_shortWeekdays),
+ shortWeekdayLookup = formatLookup(locale_shortWeekdays),
+ monthRe = formatRe(locale_months),
+ monthLookup = formatLookup(locale_months),
+ shortMonthRe = formatRe(locale_shortMonths),
+ shortMonthLookup = formatLookup(locale_shortMonths);
+
+ var formats = {
+ "a": formatShortWeekday,
+ "A": formatWeekday,
+ "b": formatShortMonth,
+ "B": formatMonth,
+ "c": null,
+ "d": formatDayOfMonth,
+ "e": formatDayOfMonth,
+ "f": formatMicroseconds,
+ "g": formatYearISO,
+ "G": formatFullYearISO,
+ "H": formatHour24,
+ "I": formatHour12,
+ "j": formatDayOfYear,
+ "L": formatMilliseconds,
+ "m": formatMonthNumber,
+ "M": formatMinutes,
+ "p": formatPeriod,
+ "q": formatQuarter,
+ "Q": formatUnixTimestamp,
+ "s": formatUnixTimestampSeconds,
+ "S": formatSeconds,
+ "u": formatWeekdayNumberMonday,
+ "U": formatWeekNumberSunday,
+ "V": formatWeekNumberISO,
+ "w": formatWeekdayNumberSunday,
+ "W": formatWeekNumberMonday,
+ "x": null,
+ "X": null,
+ "y": formatYear,
+ "Y": formatFullYear,
+ "Z": formatZone,
+ "%": formatLiteralPercent
+ };
+
+ var utcFormats = {
+ "a": formatUTCShortWeekday,
+ "A": formatUTCWeekday,
+ "b": formatUTCShortMonth,
+ "B": formatUTCMonth,
+ "c": null,
+ "d": formatUTCDayOfMonth,
+ "e": formatUTCDayOfMonth,
+ "f": formatUTCMicroseconds,
+ "g": formatUTCYearISO,
+ "G": formatUTCFullYearISO,
+ "H": formatUTCHour24,
+ "I": formatUTCHour12,
+ "j": formatUTCDayOfYear,
+ "L": formatUTCMilliseconds,
+ "m": formatUTCMonthNumber,
+ "M": formatUTCMinutes,
+ "p": formatUTCPeriod,
+ "q": formatUTCQuarter,
+ "Q": formatUnixTimestamp,
+ "s": formatUnixTimestampSeconds,
+ "S": formatUTCSeconds,
+ "u": formatUTCWeekdayNumberMonday,
+ "U": formatUTCWeekNumberSunday,
+ "V": formatUTCWeekNumberISO,
+ "w": formatUTCWeekdayNumberSunday,
+ "W": formatUTCWeekNumberMonday,
+ "x": null,
+ "X": null,
+ "y": formatUTCYear,
+ "Y": formatUTCFullYear,
+ "Z": formatUTCZone,
+ "%": formatLiteralPercent
+ };
+
+ var parses = {
+ "a": parseShortWeekday,
+ "A": parseWeekday,
+ "b": parseShortMonth,
+ "B": parseMonth,
+ "c": parseLocaleDateTime,
+ "d": parseDayOfMonth,
+ "e": parseDayOfMonth,
+ "f": parseMicroseconds,
+ "g": parseYear,
+ "G": parseFullYear,
+ "H": parseHour24,
+ "I": parseHour24,
+ "j": parseDayOfYear,
+ "L": parseMilliseconds,
+ "m": parseMonthNumber,
+ "M": parseMinutes,
+ "p": parsePeriod,
+ "q": parseQuarter,
+ "Q": parseUnixTimestamp,
+ "s": parseUnixTimestampSeconds,
+ "S": parseSeconds,
+ "u": parseWeekdayNumberMonday,
+ "U": parseWeekNumberSunday,
+ "V": parseWeekNumberISO,
+ "w": parseWeekdayNumberSunday,
+ "W": parseWeekNumberMonday,
+ "x": parseLocaleDate,
+ "X": parseLocaleTime,
+ "y": parseYear,
+ "Y": parseFullYear,
+ "Z": parseZone,
+ "%": parseLiteralPercent
+ };
+
+ // These recursive directive definitions must be deferred.
+ formats.x = newFormat(locale_date, formats);
+ formats.X = newFormat(locale_time, formats);
+ formats.c = newFormat(locale_dateTime, formats);
+ utcFormats.x = newFormat(locale_date, utcFormats);
+ utcFormats.X = newFormat(locale_time, utcFormats);
+ utcFormats.c = newFormat(locale_dateTime, utcFormats);
+
+ function newFormat(specifier, formats) {
+ return function(date) {
+ var string = [],
+ i = -1,
+ j = 0,
+ n = specifier.length,
+ c,
+ pad,
+ format;
+
+ if (!(date instanceof Date)) date = new Date(+date);
+
+ while (++i < n) {
+ if (specifier.charCodeAt(i) === 37) {
+ string.push(specifier.slice(j, i));
+ if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i);
+ else pad = c === "e" ? " " : "0";
+ if (format = formats[c]) c = format(date, pad);
+ string.push(c);
+ j = i + 1;
+ }
+ }
+
+ string.push(specifier.slice(j, i));
+ return string.join("");
+ };
+ }
+
+ function newParse(specifier, Z) {
+ return function(string) {
+ var d = newDate(1900, undefined, 1),
+ i = parseSpecifier(d, specifier, string += "", 0),
+ week, day;
+ if (i != string.length) return null;
+
+ // If a UNIX timestamp is specified, return it.
+ if ("Q" in d) return new Date(d.Q);
+ if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0));
+
+ // If this is utcParse, never use the local timezone.
+ if (Z && !("Z" in d)) d.Z = 0;
+
+ // The am-pm flag is 0 for AM, and 1 for PM.
+ if ("p" in d) d.H = d.H % 12 + d.p * 12;
+
+ // If the month was not specified, inherit from the quarter.
+ if (d.m === undefined) d.m = "q" in d ? d.q : 0;
+
+ // Convert day-of-week and week-of-year to day-of-year.
+ if ("V" in d) {
+ if (d.V < 1 || d.V > 53) return null;
+ if (!("w" in d)) d.w = 1;
+ if ("Z" in d) {
+ week = utcDate(newDate(d.y, 0, 1)), day = week.getUTCDay();
+ week = day > 4 || day === 0 ? d3Time.utcMonday.ceil(week) : d3Time.utcMonday(week);
+ week = d3Time.utcDay.offset(week, (d.V - 1) * 7);
+ d.y = week.getUTCFullYear();
+ d.m = week.getUTCMonth();
+ d.d = week.getUTCDate() + (d.w + 6) % 7;
+ } else {
+ week = localDate(newDate(d.y, 0, 1)), day = week.getDay();
+ week = day > 4 || day === 0 ? d3Time.timeMonday.ceil(week) : d3Time.timeMonday(week);
+ week = d3Time.timeDay.offset(week, (d.V - 1) * 7);
+ d.y = week.getFullYear();
+ d.m = week.getMonth();
+ d.d = week.getDate() + (d.w + 6) % 7;
+ }
+ } else if ("W" in d || "U" in d) {
+ if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0;
+ day = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay();
+ d.m = 0;
+ d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day + 5) % 7 : d.w + d.U * 7 - (day + 6) % 7;
+ }
+
+ // If a time zone is specified, all fields are interpreted as UTC and then
+ // offset according to the specified time zone.
+ if ("Z" in d) {
+ d.H += d.Z / 100 | 0;
+ d.M += d.Z % 100;
+ return utcDate(d);
+ }
+
+ // Otherwise, all fields are in local time.
+ return localDate(d);
+ };
+ }
+
+ function parseSpecifier(d, specifier, string, j) {
+ var i = 0,
+ n = specifier.length,
+ m = string.length,
+ c,
+ parse;
+
+ while (i < n) {
+ if (j >= m) return -1;
+ c = specifier.charCodeAt(i++);
+ if (c === 37) {
+ c = specifier.charAt(i++);
+ parse = parses[c in pads ? specifier.charAt(i++) : c];
+ if (!parse || ((j = parse(d, string, j)) < 0)) return -1;
+ } else if (c != string.charCodeAt(j++)) {
+ return -1;
+ }
+ }
+
+ return j;
+ }
+
+ function parsePeriod(d, string, i) {
+ var n = periodRe.exec(string.slice(i));
+ return n ? (d.p = periodLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseShortWeekday(d, string, i) {
+ var n = shortWeekdayRe.exec(string.slice(i));
+ return n ? (d.w = shortWeekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseWeekday(d, string, i) {
+ var n = weekdayRe.exec(string.slice(i));
+ return n ? (d.w = weekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseShortMonth(d, string, i) {
+ var n = shortMonthRe.exec(string.slice(i));
+ return n ? (d.m = shortMonthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseMonth(d, string, i) {
+ var n = monthRe.exec(string.slice(i));
+ return n ? (d.m = monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseLocaleDateTime(d, string, i) {
+ return parseSpecifier(d, locale_dateTime, string, i);
+ }
+
+ function parseLocaleDate(d, string, i) {
+ return parseSpecifier(d, locale_date, string, i);
+ }
+
+ function parseLocaleTime(d, string, i) {
+ return parseSpecifier(d, locale_time, string, i);
+ }
+
+ function formatShortWeekday(d) {
+ return locale_shortWeekdays[d.getDay()];
+ }
+
+ function formatWeekday(d) {
+ return locale_weekdays[d.getDay()];
+ }
+
+ function formatShortMonth(d) {
+ return locale_shortMonths[d.getMonth()];
+ }
+
+ function formatMonth(d) {
+ return locale_months[d.getMonth()];
+ }
+
+ function formatPeriod(d) {
+ return locale_periods[+(d.getHours() >= 12)];
+ }
+
+ function formatQuarter(d) {
+ return 1 + ~~(d.getMonth() / 3);
+ }
+
+ function formatUTCShortWeekday(d) {
+ return locale_shortWeekdays[d.getUTCDay()];
+ }
+
+ function formatUTCWeekday(d) {
+ return locale_weekdays[d.getUTCDay()];
+ }
+
+ function formatUTCShortMonth(d) {
+ return locale_shortMonths[d.getUTCMonth()];
+ }
+
+ function formatUTCMonth(d) {
+ return locale_months[d.getUTCMonth()];
+ }
+
+ function formatUTCPeriod(d) {
+ return locale_periods[+(d.getUTCHours() >= 12)];
+ }
+
+ function formatUTCQuarter(d) {
+ return 1 + ~~(d.getUTCMonth() / 3);
+ }
+
+ return {
+ format: function(specifier) {
+ var f = newFormat(specifier += "", formats);
+ f.toString = function() { return specifier; };
+ return f;
+ },
+ parse: function(specifier) {
+ var p = newParse(specifier += "", false);
+ p.toString = function() { return specifier; };
+ return p;
+ },
+ utcFormat: function(specifier) {
+ var f = newFormat(specifier += "", utcFormats);
+ f.toString = function() { return specifier; };
+ return f;
+ },
+ utcParse: function(specifier) {
+ var p = newParse(specifier += "", true);
+ p.toString = function() { return specifier; };
+ return p;
+ }
+ };
+}
+
+var pads = {"-": "", "_": " ", "0": "0"},
+ numberRe = /^\s*\d+/, // note: ignores next directive
+ percentRe = /^%/,
+ requoteRe = /[\\^$*+?|[\]().{}]/g;
+
+function pad(value, fill, width) {
+ var sign = value < 0 ? "-" : "",
+ string = (sign ? -value : value) + "",
+ length = string.length;
+ return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+}
+
+function requote(s) {
+ return s.replace(requoteRe, "\\$&");
+}
+
+function formatRe(names) {
+ return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i");
+}
+
+function formatLookup(names) {
+ return new Map(names.map((name, i) => [name.toLowerCase(), i]));
+}
+
+function parseWeekdayNumberSunday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.w = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekdayNumberMonday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.u = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberSunday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.U = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberISO(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.V = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberMonday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.W = +n[0], i + n[0].length) : -1;
+}
+
+function parseFullYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 4));
+ return n ? (d.y = +n[0], i + n[0].length) : -1;
+}
+
+function parseYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1;
+}
+
+function parseZone(d, string, i) {
+ var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6));
+ return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1;
+}
+
+function parseQuarter(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1;
+}
+
+function parseMonthNumber(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.m = n[0] - 1, i + n[0].length) : -1;
+}
+
+function parseDayOfMonth(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.d = +n[0], i + n[0].length) : -1;
+}
+
+function parseDayOfYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 3));
+ return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1;
+}
+
+function parseHour24(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.H = +n[0], i + n[0].length) : -1;
+}
+
+function parseMinutes(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.M = +n[0], i + n[0].length) : -1;
+}
+
+function parseSeconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.S = +n[0], i + n[0].length) : -1;
+}
+
+function parseMilliseconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 3));
+ return n ? (d.L = +n[0], i + n[0].length) : -1;
+}
+
+function parseMicroseconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 6));
+ return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1;
+}
+
+function parseLiteralPercent(d, string, i) {
+ var n = percentRe.exec(string.slice(i, i + 1));
+ return n ? i + n[0].length : -1;
+}
+
+function parseUnixTimestamp(d, string, i) {
+ var n = numberRe.exec(string.slice(i));
+ return n ? (d.Q = +n[0], i + n[0].length) : -1;
+}
+
+function parseUnixTimestampSeconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i));
+ return n ? (d.s = +n[0], i + n[0].length) : -1;
+}
+
+function formatDayOfMonth(d, p) {
+ return pad(d.getDate(), p, 2);
+}
+
+function formatHour24(d, p) {
+ return pad(d.getHours(), p, 2);
+}
+
+function formatHour12(d, p) {
+ return pad(d.getHours() % 12 || 12, p, 2);
+}
+
+function formatDayOfYear(d, p) {
+ return pad(1 + d3Time.timeDay.count(d3Time.timeYear(d), d), p, 3);
+}
+
+function formatMilliseconds(d, p) {
+ return pad(d.getMilliseconds(), p, 3);
+}
+
+function formatMicroseconds(d, p) {
+ return formatMilliseconds(d, p) + "000";
+}
+
+function formatMonthNumber(d, p) {
+ return pad(d.getMonth() + 1, p, 2);
+}
+
+function formatMinutes(d, p) {
+ return pad(d.getMinutes(), p, 2);
+}
+
+function formatSeconds(d, p) {
+ return pad(d.getSeconds(), p, 2);
+}
+
+function formatWeekdayNumberMonday(d) {
+ var day = d.getDay();
+ return day === 0 ? 7 : day;
+}
+
+function formatWeekNumberSunday(d, p) {
+ return pad(d3Time.timeSunday.count(d3Time.timeYear(d) - 1, d), p, 2);
+}
+
+function dISO(d) {
+ var day = d.getDay();
+ return (day >= 4 || day === 0) ? d3Time.timeThursday(d) : d3Time.timeThursday.ceil(d);
+}
+
+function formatWeekNumberISO(d, p) {
+ d = dISO(d);
+ return pad(d3Time.timeThursday.count(d3Time.timeYear(d), d) + (d3Time.timeYear(d).getDay() === 4), p, 2);
+}
+
+function formatWeekdayNumberSunday(d) {
+ return d.getDay();
+}
+
+function formatWeekNumberMonday(d, p) {
+ return pad(d3Time.timeMonday.count(d3Time.timeYear(d) - 1, d), p, 2);
+}
+
+function formatYear(d, p) {
+ return pad(d.getFullYear() % 100, p, 2);
+}
+
+function formatYearISO(d, p) {
+ d = dISO(d);
+ return pad(d.getFullYear() % 100, p, 2);
+}
+
+function formatFullYear(d, p) {
+ return pad(d.getFullYear() % 10000, p, 4);
+}
+
+function formatFullYearISO(d, p) {
+ var day = d.getDay();
+ d = (day >= 4 || day === 0) ? d3Time.timeThursday(d) : d3Time.timeThursday.ceil(d);
+ return pad(d.getFullYear() % 10000, p, 4);
+}
+
+function formatZone(d) {
+ var z = d.getTimezoneOffset();
+ return (z > 0 ? "-" : (z *= -1, "+"))
+ + pad(z / 60 | 0, "0", 2)
+ + pad(z % 60, "0", 2);
+}
+
+function formatUTCDayOfMonth(d, p) {
+ return pad(d.getUTCDate(), p, 2);
+}
+
+function formatUTCHour24(d, p) {
+ return pad(d.getUTCHours(), p, 2);
+}
+
+function formatUTCHour12(d, p) {
+ return pad(d.getUTCHours() % 12 || 12, p, 2);
+}
+
+function formatUTCDayOfYear(d, p) {
+ return pad(1 + d3Time.utcDay.count(d3Time.utcYear(d), d), p, 3);
+}
+
+function formatUTCMilliseconds(d, p) {
+ return pad(d.getUTCMilliseconds(), p, 3);
+}
+
+function formatUTCMicroseconds(d, p) {
+ return formatUTCMilliseconds(d, p) + "000";
+}
+
+function formatUTCMonthNumber(d, p) {
+ return pad(d.getUTCMonth() + 1, p, 2);
+}
+
+function formatUTCMinutes(d, p) {
+ return pad(d.getUTCMinutes(), p, 2);
+}
+
+function formatUTCSeconds(d, p) {
+ return pad(d.getUTCSeconds(), p, 2);
+}
+
+function formatUTCWeekdayNumberMonday(d) {
+ var dow = d.getUTCDay();
+ return dow === 0 ? 7 : dow;
+}
+
+function formatUTCWeekNumberSunday(d, p) {
+ return pad(d3Time.utcSunday.count(d3Time.utcYear(d) - 1, d), p, 2);
+}
+
+function UTCdISO(d) {
+ var day = d.getUTCDay();
+ return (day >= 4 || day === 0) ? d3Time.utcThursday(d) : d3Time.utcThursday.ceil(d);
+}
+
+function formatUTCWeekNumberISO(d, p) {
+ d = UTCdISO(d);
+ return pad(d3Time.utcThursday.count(d3Time.utcYear(d), d) + (d3Time.utcYear(d).getUTCDay() === 4), p, 2);
+}
+
+function formatUTCWeekdayNumberSunday(d) {
+ return d.getUTCDay();
+}
+
+function formatUTCWeekNumberMonday(d, p) {
+ return pad(d3Time.utcMonday.count(d3Time.utcYear(d) - 1, d), p, 2);
+}
+
+function formatUTCYear(d, p) {
+ return pad(d.getUTCFullYear() % 100, p, 2);
+}
+
+function formatUTCYearISO(d, p) {
+ d = UTCdISO(d);
+ return pad(d.getUTCFullYear() % 100, p, 2);
+}
+
+function formatUTCFullYear(d, p) {
+ return pad(d.getUTCFullYear() % 10000, p, 4);
+}
+
+function formatUTCFullYearISO(d, p) {
+ var day = d.getUTCDay();
+ d = (day >= 4 || day === 0) ? d3Time.utcThursday(d) : d3Time.utcThursday.ceil(d);
+ return pad(d.getUTCFullYear() % 10000, p, 4);
+}
+
+function formatUTCZone() {
+ return "+0000";
+}
+
+function formatLiteralPercent() {
+ return "%";
+}
+
+function formatUnixTimestamp(d) {
+ return +d;
+}
+
+function formatUnixTimestampSeconds(d) {
+ return Math.floor(+d / 1000);
+}
+
+var locale;
+exports.timeFormat = void 0;
+exports.timeParse = void 0;
+exports.utcFormat = void 0;
+exports.utcParse = void 0;
+
+defaultLocale({
+ dateTime: "%x, %X",
+ date: "%-m/%-d/%Y",
+ time: "%-I:%M:%S %p",
+ periods: ["AM", "PM"],
+ days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+ shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+ months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+ shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+});
+
+function defaultLocale(definition) {
+ locale = formatLocale(definition);
+ exports.timeFormat = locale.format;
+ exports.timeParse = locale.parse;
+ exports.utcFormat = locale.utcFormat;
+ exports.utcParse = locale.utcParse;
+ return locale;
+}
+
+var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ";
+
+function formatIsoNative(date) {
+ return date.toISOString();
+}
+
+var formatIso = Date.prototype.toISOString
+ ? formatIsoNative
+ : exports.utcFormat(isoSpecifier);
+
+function parseIsoNative(string) {
+ var date = new Date(string);
+ return isNaN(date) ? null : date;
+}
+
+var parseIso = +new Date("2000-01-01T00:00:00.000Z")
+ ? parseIsoNative
+ : exports.utcParse(isoSpecifier);
+
+exports.isoFormat = formatIso;
+exports.isoParse = parseIso;
+exports.timeFormatDefaultLocale = defaultLocale;
+exports.timeFormatLocale = formatLocale;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/node_modules/d3-time-format/dist/d3-time-format.min.js b/node_modules/d3-time-format/dist/d3-time-format.min.js
new file mode 100644
index 00000000..816bce23
--- /dev/null
+++ b/node_modules/d3-time-format/dist/d3-time-format.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-time-format/ v4.1.0 Copyright 2010-2021 Mike Bostock
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-time")):"function"==typeof define&&define.amd?define(["exports","d3-time"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).d3=e.d3||{},e.d3)}(this,(function(e,t){"use strict";function n(e){if(0<=e.y&&e.y<100){var t=new Date(-1,e.m,e.d,e.H,e.M,e.S,e.L);return t.setFullYear(e.y),t}return new Date(e.y,e.m,e.d,e.H,e.M,e.S,e.L)}function r(e){if(0<=e.y&&e.y<100){var t=new Date(Date.UTC(-1,e.m,e.d,e.H,e.M,e.S,e.L));return t.setUTCFullYear(e.y),t}return new Date(Date.UTC(e.y,e.m,e.d,e.H,e.M,e.S,e.L))}function u(e,t,n){return{y:e,m:t,d:n,H:0,M:0,S:0,L:0}}function i(e){var i=e.dateTime,c=e.date,a=e.time,f=e.periods,l=e.days,s=e.shortDays,g=e.months,G=e.shortMonths,ge=d(f),pe=y(f),we=d(l),Se=y(l),Ye=d(s),Fe=y(s),Le=d(g),He=y(g),Ae=d(G),Ze=y(G),be={a:function(e){return s[e.getDay()]},A:function(e){return l[e.getDay()]},b:function(e){return G[e.getMonth()]},B:function(e){return g[e.getMonth()]},c:null,d:W,e:W,f:J,g:R,G:K,H:V,I:j,j:q,L:I,m:O,M:Q,p:function(e){return f[+(e.getHours()>=12)]},q:function(e){return 1+~~(e.getMonth()/3)},Q:Ue,s:xe,S:X,u:N,U:B,V:_,w:$,W:z,x:null,X:null,y:E,Y:k,Z:ee,"%":Ce},Pe={a:function(e){return s[e.getUTCDay()]},A:function(e){return l[e.getUTCDay()]},b:function(e){return G[e.getUTCMonth()]},B:function(e){return g[e.getUTCMonth()]},c:null,d:te,e:te,f:ce,g:ve,G:Me,H:ne,I:re,j:ue,L:ie,m:oe,M:ae,p:function(e){return f[+(e.getUTCHours()>=12)]},q:function(e){return 1+~~(e.getUTCMonth()/3)},Q:Ue,s:xe,S:fe,u:le,U:se,V:de,w:ye,W:he,x:null,X:null,y:me,Y:Te,Z:De,"%":Ce},We={a:function(e,t,n){var r=Ye.exec(t.slice(n));return r?(e.w=Fe.get(r[0].toLowerCase()),n+r[0].length):-1},A:function(e,t,n){var r=we.exec(t.slice(n));return r?(e.w=Se.get(r[0].toLowerCase()),n+r[0].length):-1},b:function(e,t,n){var r=Ae.exec(t.slice(n));return r?(e.m=Ze.get(r[0].toLowerCase()),n+r[0].length):-1},B:function(e,t,n){var r=Le.exec(t.slice(n));return r?(e.m=He.get(r[0].toLowerCase()),n+r[0].length):-1},c:function(e,t,n){return qe(e,i,t,n)},d:w,e:w,f:A,g:C,G:D,H:Y,I:Y,j:S,L:H,m:p,M:F,p:function(e,t,n){var r=ge.exec(t.slice(n));return r?(e.p=pe.get(r[0].toLowerCase()),n+r[0].length):-1},q:x,Q:b,s:P,S:L,u:m,U:v,V:T,w:h,W:M,x:function(e,t,n){return qe(e,c,t,n)},X:function(e,t,n){return qe(e,a,t,n)},y:C,Y:D,Z:U,"%":Z};function Ve(e,t){return function(n){var r,u,i,c=[],a=-1,f=0,l=e.length;for(n instanceof Date||(n=new Date(+n));++a53)return null;"w"in f||(f.w=1),"Z"in f?(a=(o=r(u(f.y,0,1))).getUTCDay(),o=a>4||0===a?t.utcMonday.ceil(o):t.utcMonday(o),o=t.utcDay.offset(o,7*(f.V-1)),f.y=o.getUTCFullYear(),f.m=o.getUTCMonth(),f.d=o.getUTCDate()+(f.w+6)%7):(a=(o=n(u(f.y,0,1))).getDay(),o=a>4||0===a?t.timeMonday.ceil(o):t.timeMonday(o),o=t.timeDay.offset(o,7*(f.V-1)),f.y=o.getFullYear(),f.m=o.getMonth(),f.d=o.getDate()+(f.w+6)%7)}else("W"in f||"U"in f)&&("w"in f||(f.w="u"in f?f.u%7:"W"in f?1:0),a="Z"in f?r(u(f.y,0,1)).getUTCDay():n(u(f.y,0,1)).getDay(),f.m=0,f.d="W"in f?(f.w+6)%7+7*f.W-(a+5)%7:f.w+7*f.U-(a+6)%7);return"Z"in f?(f.H+=f.Z/100|0,f.M+=f.Z%100,r(f)):n(f)}}function qe(e,t,n,r){for(var u,i,c=0,a=t.length,f=n.length;c=f)return-1;if(37===(u=t.charCodeAt(c++))){if(u=t.charAt(c++),!(i=We[u in o?t.charAt(c++):u])||(r=i(e,n,r))<0)return-1}else if(u!=n.charCodeAt(r++))return-1}return r}return be.x=Ve(c,be),be.X=Ve(a,be),be.c=Ve(i,be),Pe.x=Ve(c,Pe),Pe.X=Ve(a,Pe),Pe.c=Ve(i,Pe),{format:function(e){var t=Ve(e+="",be);return t.toString=function(){return e},t},parse:function(e){var t=je(e+="",!1);return t.toString=function(){return e},t},utcFormat:function(e){var t=Ve(e+="",Pe);return t.toString=function(){return e},t},utcParse:function(e){var t=je(e+="",!0);return t.toString=function(){return e},t}}}var c,o={"-":"",_:" ",0:"0"},a=/^\s*\d+/,f=/^%/,l=/[\\^$*+?|[\]().{}]/g;function s(e,t,n){var r=e<0?"-":"",u=(r?-e:e)+"",i=u.length;return r+(i[e.toLowerCase(),t])))}function h(e,t,n){var r=a.exec(t.slice(n,n+1));return r?(e.w=+r[0],n+r[0].length):-1}function m(e,t,n){var r=a.exec(t.slice(n,n+1));return r?(e.u=+r[0],n+r[0].length):-1}function v(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.U=+r[0],n+r[0].length):-1}function T(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.V=+r[0],n+r[0].length):-1}function M(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.W=+r[0],n+r[0].length):-1}function D(e,t,n){var r=a.exec(t.slice(n,n+4));return r?(e.y=+r[0],n+r[0].length):-1}function C(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.y=+r[0]+(+r[0]>68?1900:2e3),n+r[0].length):-1}function U(e,t,n){var r=/^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(t.slice(n,n+6));return r?(e.Z=r[1]?0:-(r[2]+(r[3]||"00")),n+r[0].length):-1}function x(e,t,n){var r=a.exec(t.slice(n,n+1));return r?(e.q=3*r[0]-3,n+r[0].length):-1}function p(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.m=r[0]-1,n+r[0].length):-1}function w(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.d=+r[0],n+r[0].length):-1}function S(e,t,n){var r=a.exec(t.slice(n,n+3));return r?(e.m=0,e.d=+r[0],n+r[0].length):-1}function Y(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.H=+r[0],n+r[0].length):-1}function F(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.M=+r[0],n+r[0].length):-1}function L(e,t,n){var r=a.exec(t.slice(n,n+2));return r?(e.S=+r[0],n+r[0].length):-1}function H(e,t,n){var r=a.exec(t.slice(n,n+3));return r?(e.L=+r[0],n+r[0].length):-1}function A(e,t,n){var r=a.exec(t.slice(n,n+6));return r?(e.L=Math.floor(r[0]/1e3),n+r[0].length):-1}function Z(e,t,n){var r=f.exec(t.slice(n,n+1));return r?n+r[0].length:-1}function b(e,t,n){var r=a.exec(t.slice(n));return r?(e.Q=+r[0],n+r[0].length):-1}function P(e,t,n){var r=a.exec(t.slice(n));return r?(e.s=+r[0],n+r[0].length):-1}function W(e,t){return s(e.getDate(),t,2)}function V(e,t){return s(e.getHours(),t,2)}function j(e,t){return s(e.getHours()%12||12,t,2)}function q(e,n){return s(1+t.timeDay.count(t.timeYear(e),e),n,3)}function I(e,t){return s(e.getMilliseconds(),t,3)}function J(e,t){return I(e,t)+"000"}function O(e,t){return s(e.getMonth()+1,t,2)}function Q(e,t){return s(e.getMinutes(),t,2)}function X(e,t){return s(e.getSeconds(),t,2)}function N(e){var t=e.getDay();return 0===t?7:t}function B(e,n){return s(t.timeSunday.count(t.timeYear(e)-1,e),n,2)}function G(e){var n=e.getDay();return n>=4||0===n?t.timeThursday(e):t.timeThursday.ceil(e)}function _(e,n){return e=G(e),s(t.timeThursday.count(t.timeYear(e),e)+(4===t.timeYear(e).getDay()),n,2)}function $(e){return e.getDay()}function z(e,n){return s(t.timeMonday.count(t.timeYear(e)-1,e),n,2)}function E(e,t){return s(e.getFullYear()%100,t,2)}function R(e,t){return s((e=G(e)).getFullYear()%100,t,2)}function k(e,t){return s(e.getFullYear()%1e4,t,4)}function K(e,n){var r=e.getDay();return s((e=r>=4||0===r?t.timeThursday(e):t.timeThursday.ceil(e)).getFullYear()%1e4,n,4)}function ee(e){var t=e.getTimezoneOffset();return(t>0?"-":(t*=-1,"+"))+s(t/60|0,"0",2)+s(t%60,"0",2)}function te(e,t){return s(e.getUTCDate(),t,2)}function ne(e,t){return s(e.getUTCHours(),t,2)}function re(e,t){return s(e.getUTCHours()%12||12,t,2)}function ue(e,n){return s(1+t.utcDay.count(t.utcYear(e),e),n,3)}function ie(e,t){return s(e.getUTCMilliseconds(),t,3)}function ce(e,t){return ie(e,t)+"000"}function oe(e,t){return s(e.getUTCMonth()+1,t,2)}function ae(e,t){return s(e.getUTCMinutes(),t,2)}function fe(e,t){return s(e.getUTCSeconds(),t,2)}function le(e){var t=e.getUTCDay();return 0===t?7:t}function se(e,n){return s(t.utcSunday.count(t.utcYear(e)-1,e),n,2)}function ge(e){var n=e.getUTCDay();return n>=4||0===n?t.utcThursday(e):t.utcThursday.ceil(e)}function de(e,n){return e=ge(e),s(t.utcThursday.count(t.utcYear(e),e)+(4===t.utcYear(e).getUTCDay()),n,2)}function ye(e){return e.getUTCDay()}function he(e,n){return s(t.utcMonday.count(t.utcYear(e)-1,e),n,2)}function me(e,t){return s(e.getUTCFullYear()%100,t,2)}function ve(e,t){return s((e=ge(e)).getUTCFullYear()%100,t,2)}function Te(e,t){return s(e.getUTCFullYear()%1e4,t,4)}function Me(e,n){var r=e.getUTCDay();return s((e=r>=4||0===r?t.utcThursday(e):t.utcThursday.ceil(e)).getUTCFullYear()%1e4,n,4)}function De(){return"+0000"}function Ce(){return"%"}function Ue(e){return+e}function xe(e){return Math.floor(+e/1e3)}function pe(t){return c=i(t),e.timeFormat=c.format,e.timeParse=c.parse,e.utcFormat=c.utcFormat,e.utcParse=c.utcParse,c}e.timeFormat=void 0,e.timeParse=void 0,e.utcFormat=void 0,e.utcParse=void 0,pe({dateTime:"%x, %X",date:"%-m/%-d/%Y",time:"%-I:%M:%S %p",periods:["AM","PM"],days:["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],shortDays:["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],months:["January","February","March","April","May","June","July","August","September","October","November","December"],shortMonths:["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]});var we="%Y-%m-%dT%H:%M:%S.%LZ";var Se=Date.prototype.toISOString?function(e){return e.toISOString()}:e.utcFormat(we);var Ye=+new Date("2000-01-01T00:00:00.000Z")?function(e){var t=new Date(e);return isNaN(t)?null:t}:e.utcParse(we);e.isoFormat=Se,e.isoParse=Ye,e.timeFormatDefaultLocale=pe,e.timeFormatLocale=i,Object.defineProperty(e,"__esModule",{value:!0})}));
diff --git a/node_modules/d3-time-format/locale/ar-EG.json b/node_modules/d3-time-format/locale/ar-EG.json
new file mode 100644
index 00000000..8ac02650
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ar-EG.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x, %X",
+ "date": "%-d/%-m/%Y",
+ "time": "%-I:%M:%S %p",
+ "periods": ["ص", "م"],
+ "days": ["الأحد", "الإثنين", "الثلاثاء", "الأربعاء", "الخميس", "الجمعة", "السبت"],
+ "shortDays": ["أحد", "إثنين", "ثلاثاء", "أربعاء", "خميس", "جمعة", "سبت"],
+ "months": ["يناير", "فبراير", "مارس", "أبريل", "مايو", "يونيو", "يوليو", "أغسطس", "سبتمبر", "أكتوبر", "نوفمبر", "ديسمبر"],
+ "shortMonths": ["يناير", "فبراير", "مارس", "أبريل", "مايو", "يونيو", "يوليو", "أغسطس", "سبتمبر", "أكتوبر", "نوفمبر", "ديسمبر"]
+}
diff --git a/node_modules/d3-time-format/locale/ar-SY.json b/node_modules/d3-time-format/locale/ar-SY.json
new file mode 100644
index 00000000..866fa5ef
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ar-SY.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x, %X",
+ "date": "%-d/%-m/%Y",
+ "time": "%-I:%M:%S %p",
+ "periods": ["ص", "م"],
+ "days": ["الأحد", "الإثنين", "الثلاثاء", "الأربعاء", "الخميس", "الجمعة", "السبت"],
+ "shortDays": ["أحد", "إثنين", "ثلاثاء", "أربعاء", "خميس", "جمعة", "سبت"],
+ "months": ["كانون الثاني", "شباط", "آذار", "نيسان", "أيار", "حزيران", "تموز", "آب", "أيلول", "تشرين الأول", "تشرين الثاني", "كانون الأول"],
+ "shortMonths": ["ك٢", "شباط", "آذار", "نيسان", "أيار", "حزيران", "تموز", "آب", "أيلول", "ت١", "ت٢", "ك١"]
+}
diff --git a/node_modules/d3-time-format/locale/ca-ES.json b/node_modules/d3-time-format/locale/ca-ES.json
new file mode 100644
index 00000000..a2708735
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ca-ES.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e de %B de %Y, %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["diumenge", "dilluns", "dimarts", "dimecres", "dijous", "divendres", "dissabte"],
+ "shortDays": ["dg.", "dl.", "dt.", "dc.", "dj.", "dv.", "ds."],
+ "months": ["gener", "febrer", "març", "abril", "maig", "juny", "juliol", "agost", "setembre", "octubre", "novembre", "desembre"],
+ "shortMonths": ["gen.", "febr.", "març", "abr.", "maig", "juny", "jul.", "ag.", "set.", "oct.", "nov.", "des."]
+}
diff --git a/node_modules/d3-time-format/locale/cs-CZ.json b/node_modules/d3-time-format/locale/cs-CZ.json
new file mode 100644
index 00000000..ced34ea5
--- /dev/null
+++ b/node_modules/d3-time-format/locale/cs-CZ.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A,%e.%B %Y, %X",
+ "date": "%-d.%-m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["neděle", "pondělí", "úterý", "středa", "čvrtek", "pátek", "sobota"],
+ "shortDays": ["ne.", "po.", "út.", "st.", "čt.", "pá.", "so."],
+ "months": ["leden", "únor", "březen", "duben", "květen", "červen", "červenec", "srpen", "září", "říjen", "listopad", "prosinec"],
+ "shortMonths": ["led", "úno", "břez", "dub", "kvě", "čer", "červ", "srp", "zář", "říj", "list", "pros"]
+}
diff --git a/node_modules/d3-time-format/locale/da-DK.json b/node_modules/d3-time-format/locale/da-DK.json
new file mode 100644
index 00000000..f0c2349c
--- /dev/null
+++ b/node_modules/d3-time-format/locale/da-DK.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A den %d %B %Y %X",
+ "date": "%d-%m-%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["søndag", "mandag", "tirsdag", "onsdag", "torsdag", "fredag", "lørdag"],
+ "shortDays": ["søn", "man", "tir", "ons", "tor", "fre", "lør"],
+ "months": ["januar", "februar", "marts", "april", "maj", "juni", "juli", "august", "september", "oktober", "november", "december"],
+ "shortMonths": ["jan", "feb", "mar", "apr", "maj", "jun", "jul", "aug", "sep", "okt", "nov", "dec"]
+}
diff --git a/node_modules/d3-time-format/locale/de-CH.json b/node_modules/d3-time-format/locale/de-CH.json
new file mode 100644
index 00000000..466b749b
--- /dev/null
+++ b/node_modules/d3-time-format/locale/de-CH.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, der %e. %B %Y, %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Sonntag", "Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag"],
+ "shortDays": ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"],
+ "months": ["Januar", "Februar", "März", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"],
+ "shortMonths": ["Jan", "Feb", "Mrz", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"]
+}
diff --git a/node_modules/d3-time-format/locale/de-DE.json b/node_modules/d3-time-format/locale/de-DE.json
new file mode 100644
index 00000000..466b749b
--- /dev/null
+++ b/node_modules/d3-time-format/locale/de-DE.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, der %e. %B %Y, %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Sonntag", "Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag"],
+ "shortDays": ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"],
+ "months": ["Januar", "Februar", "März", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"],
+ "shortMonths": ["Jan", "Feb", "Mrz", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"]
+}
diff --git a/node_modules/d3-time-format/locale/en-CA.json b/node_modules/d3-time-format/locale/en-CA.json
new file mode 100644
index 00000000..5c13ae3c
--- /dev/null
+++ b/node_modules/d3-time-format/locale/en-CA.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %b %e %X %Y",
+ "date": "%Y-%m-%d",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+ "shortDays": ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+ "months": ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+ "shortMonths": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+}
diff --git a/node_modules/d3-time-format/locale/en-GB.json b/node_modules/d3-time-format/locale/en-GB.json
new file mode 100644
index 00000000..9f651c5c
--- /dev/null
+++ b/node_modules/d3-time-format/locale/en-GB.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %e %b %X %Y",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+ "shortDays": ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+ "months": ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+ "shortMonths": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+}
diff --git a/node_modules/d3-time-format/locale/en-US.json b/node_modules/d3-time-format/locale/en-US.json
new file mode 100644
index 00000000..a7ac9513
--- /dev/null
+++ b/node_modules/d3-time-format/locale/en-US.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x, %X",
+ "date": "%-m/%-d/%Y",
+ "time": "%-I:%M:%S %p",
+ "periods": ["AM", "PM"],
+ "days": ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+ "shortDays": ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+ "months": ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+ "shortMonths": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+}
diff --git a/node_modules/d3-time-format/locale/es-ES.json b/node_modules/d3-time-format/locale/es-ES.json
new file mode 100644
index 00000000..8c5f754f
--- /dev/null
+++ b/node_modules/d3-time-format/locale/es-ES.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e de %B de %Y, %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["domingo", "lunes", "martes", "miércoles", "jueves", "viernes", "sábado"],
+ "shortDays": ["dom", "lun", "mar", "mié", "jue", "vie", "sáb"],
+ "months": ["enero", "febrero", "marzo", "abril", "mayo", "junio", "julio", "agosto", "septiembre", "octubre", "noviembre", "diciembre"],
+ "shortMonths": ["ene", "feb", "mar", "abr", "may", "jun", "jul", "ago", "sep", "oct", "nov", "dic"]
+}
diff --git a/node_modules/d3-time-format/locale/es-MX.json b/node_modules/d3-time-format/locale/es-MX.json
new file mode 100644
index 00000000..4dc2077e
--- /dev/null
+++ b/node_modules/d3-time-format/locale/es-MX.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x, %X",
+ "date": "%d/%m/%Y",
+ "time": "%-I:%M:%S %p",
+ "periods": ["AM", "PM"],
+ "days": ["domingo", "lunes", "martes", "miércoles", "jueves", "viernes", "sábado"],
+ "shortDays": ["dom", "lun", "mar", "mié", "jue", "vie", "sáb"],
+ "months": ["enero", "febrero", "marzo", "abril", "mayo", "junio", "julio", "agosto", "septiembre", "octubre", "noviembre", "diciembre"],
+ "shortMonths": ["ene", "feb", "mar", "abr", "may", "jun", "jul", "ago", "sep", "oct", "nov", "dic"]
+}
diff --git a/node_modules/d3-time-format/locale/fa-IR.json b/node_modules/d3-time-format/locale/fa-IR.json
new file mode 100644
index 00000000..badff07b
--- /dev/null
+++ b/node_modules/d3-time-format/locale/fa-IR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x, %X",
+ "date": "%-d/%-m/%Y",
+ "time": "%-I:%M:%S %p",
+ "periods": ["صبح", "عصر"],
+ "days": ["یکشنبه", "دوشنبه", "سه شنبه", "چهارشنبه", "پنجشنبه", "جمعه", "شنبه"],
+ "shortDays": ["یکشنبه", "دوشنبه", "سه شنبه", "چهارشنبه", "پنجشنبه", "جمعه", "شنبه"],
+ "months": ["ژانویه", "فوریه", "مارس", "آوریل", "مه", "ژوئن", "ژوئیه", "اوت", "سپتامبر", "اکتبر", "نوامبر", "دسامبر"],
+ "shortMonths": ["ژانویه", "فوریه", "مارس", "آوریل", "مه", "ژوئن", "ژوئیه", "اوت", "سپتامبر", "اکتبر", "نوامبر", "دسامبر"]
+}
diff --git a/node_modules/d3-time-format/locale/fi-FI.json b/node_modules/d3-time-format/locale/fi-FI.json
new file mode 100644
index 00000000..2422199e
--- /dev/null
+++ b/node_modules/d3-time-format/locale/fi-FI.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %-d. %Bta %Y klo %X",
+ "date": "%-d.%-m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["a.m.", "p.m."],
+ "days": ["sunnuntai", "maanantai", "tiistai", "keskiviikko", "torstai", "perjantai", "lauantai"],
+ "shortDays": ["Su", "Ma", "Ti", "Ke", "To", "Pe", "La"],
+ "months": ["tammikuu", "helmikuu", "maaliskuu", "huhtikuu", "toukokuu", "kesäkuu", "heinäkuu", "elokuu", "syyskuu", "lokakuu", "marraskuu", "joulukuu"],
+ "shortMonths": ["Tammi", "Helmi", "Maalis", "Huhti", "Touko", "Kesä", "Heinä", "Elo", "Syys", "Loka", "Marras", "Joulu"]
+}
diff --git a/node_modules/d3-time-format/locale/fr-CA.json b/node_modules/d3-time-format/locale/fr-CA.json
new file mode 100644
index 00000000..1300cabd
--- /dev/null
+++ b/node_modules/d3-time-format/locale/fr-CA.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %e %b %Y %X",
+ "date": "%Y-%m-%d",
+ "time": "%H:%M:%S",
+ "periods": ["", ""],
+ "days": ["dimanche", "lundi", "mardi", "mercredi", "jeudi", "vendredi", "samedi"],
+ "shortDays": ["dim", "lun", "mar", "mer", "jeu", "ven", "sam"],
+ "months": ["janvier", "février", "mars", "avril", "mai", "juin", "juillet", "août", "septembre", "octobre", "novembre", "décembre"],
+ "shortMonths": ["jan", "fév", "mar", "avr", "mai", "jui", "jul", "aoû", "sep", "oct", "nov", "déc"]
+}
diff --git a/node_modules/d3-time-format/locale/fr-FR.json b/node_modules/d3-time-format/locale/fr-FR.json
new file mode 100644
index 00000000..6ac05ee2
--- /dev/null
+++ b/node_modules/d3-time-format/locale/fr-FR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A %e %B %Y à %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["dimanche", "lundi", "mardi", "mercredi", "jeudi", "vendredi", "samedi"],
+ "shortDays": ["dim.", "lun.", "mar.", "mer.", "jeu.", "ven.", "sam."],
+ "months": ["janvier", "février", "mars", "avril", "mai", "juin", "juillet", "août", "septembre", "octobre", "novembre", "décembre"],
+ "shortMonths": ["janv.", "févr.", "mars", "avr.", "mai", "juin", "juil.", "août", "sept.", "oct.", "nov.", "déc."]
+}
diff --git a/node_modules/d3-time-format/locale/he-IL.json b/node_modules/d3-time-format/locale/he-IL.json
new file mode 100644
index 00000000..0ce27cdd
--- /dev/null
+++ b/node_modules/d3-time-format/locale/he-IL.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e ב%B %Y %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["ראשון", "שני", "שלישי", "רביעי", "חמישי", "שישי", "שבת"],
+ "shortDays": ["א׳", "ב׳", "ג׳", "ד׳", "ה׳", "ו׳", "ש׳"],
+ "months": ["ינואר", "פברואר", "מרץ", "אפריל", "מאי", "יוני", "יולי", "אוגוסט", "ספטמבר", "אוקטובר", "נובמבר", "דצמבר"],
+ "shortMonths": ["ינו׳", "פבר׳", "מרץ", "אפר׳", "מאי", "יוני", "יולי", "אוג׳", "ספט׳", "אוק׳", "נוב׳", "דצמ׳"]
+}
diff --git a/node_modules/d3-time-format/locale/hr-HR.json b/node_modules/d3-time-format/locale/hr-HR.json
new file mode 100644
index 00000000..b82dea66
--- /dev/null
+++ b/node_modules/d3-time-format/locale/hr-HR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e. %B %Y., %X",
+ "date": "%d. %m. %Y.",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Nedjelja", "Ponedjeljak", "Utorak", "Srijeda", "Četvtrak", "Petak", "Subota"],
+ "shortDays": ["Ne", "Po", "Ut", "Sr", "Če", "Pe", "Su"],
+ "months": ["Siječanj", "Veljača", "Ožujak", "Travanj", "Svibanj", "Lipanj", "Srpanj", "Kolovoz", "Rujan", "Listopad", "Studeni", "Prosinac"],
+ "shortMonths": ["Sij", "Velj", "Ožu", "Tra", "Svi", "Lip", "Srp", "Kol", "Ruj", "Lis", "Stu", "Pro"]
+}
diff --git a/node_modules/d3-time-format/locale/hu-HU.json b/node_modules/d3-time-format/locale/hu-HU.json
new file mode 100644
index 00000000..d81acf22
--- /dev/null
+++ b/node_modules/d3-time-format/locale/hu-HU.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%Y. %B %-e., %A %X",
+ "date": "%Y. %m. %d.",
+ "time": "%H:%M:%S",
+ "periods": ["de.", "du."],
+ "days": ["vasárnap", "hétfő", "kedd", "szerda", "csütörtök", "péntek", "szombat"],
+ "shortDays": ["V", "H", "K", "Sze", "Cs", "P", "Szo"],
+ "months": ["január", "február", "március", "április", "május", "június", "július", "augusztus", "szeptember", "október", "november", "december"],
+ "shortMonths": ["jan.", "feb.", "már.", "ápr.", "máj.", "jún.", "júl.", "aug.", "szept.", "okt.", "nov.", "dec."]
+}
diff --git a/node_modules/d3-time-format/locale/it-IT.json b/node_modules/d3-time-format/locale/it-IT.json
new file mode 100644
index 00000000..0fc08e02
--- /dev/null
+++ b/node_modules/d3-time-format/locale/it-IT.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A %e %B %Y, %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Domenica", "Lunedì", "Martedì", "Mercoledì", "Giovedì", "Venerdì", "Sabato"],
+ "shortDays": ["Dom", "Lun", "Mar", "Mer", "Gio", "Ven", "Sab"],
+ "months": ["Gennaio", "Febbraio", "Marzo", "Aprile", "Maggio", "Giugno", "Luglio", "Agosto", "Settembre", "Ottobre", "Novembre", "Dicembre"],
+ "shortMonths": ["Gen", "Feb", "Mar", "Apr", "Mag", "Giu", "Lug", "Ago", "Set", "Ott", "Nov", "Dic"]
+}
diff --git a/node_modules/d3-time-format/locale/ja-JP.json b/node_modules/d3-time-format/locale/ja-JP.json
new file mode 100644
index 00000000..72c460d7
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ja-JP.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x %a %X",
+ "date": "%Y/%m/%d",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["日曜日", "月曜日", "火曜日", "水曜日", "木曜日", "金曜日", "土曜日"],
+ "shortDays": ["日", "月", "火", "水", "木", "金", "土"],
+ "months": ["1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"],
+ "shortMonths": ["1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"]
+}
diff --git a/node_modules/d3-time-format/locale/ko-KR.json b/node_modules/d3-time-format/locale/ko-KR.json
new file mode 100644
index 00000000..7055666a
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ko-KR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%Y/%m/%d %a %X",
+ "date": "%Y/%m/%d",
+ "time": "%H:%M:%S",
+ "periods": ["오전", "오후"],
+ "days": ["일요일", "월요일", "화요일", "수요일", "목요일", "금요일", "토요일"],
+ "shortDays": ["일", "월", "화", "수", "목", "금", "토"],
+ "months": ["1월", "2월", "3월", "4월", "5월", "6월", "7월", "8월", "9월", "10월", "11월", "12월"],
+ "shortMonths": ["1월", "2월", "3월", "4월", "5월", "6월", "7월", "8월", "9월", "10월", "11월", "12월"]
+}
diff --git a/node_modules/d3-time-format/locale/mk-MK.json b/node_modules/d3-time-format/locale/mk-MK.json
new file mode 100644
index 00000000..4a47fd11
--- /dev/null
+++ b/node_modules/d3-time-format/locale/mk-MK.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e %B %Y г. %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["недела", "понеделник", "вторник", "среда", "четврток", "петок", "сабота"],
+ "shortDays": ["нед", "пон", "вто", "сре", "чет", "пет", "саб"],
+ "months": ["јануари", "февруари", "март", "април", "мај", "јуни", "јули", "август", "септември", "октомври", "ноември", "декември"],
+ "shortMonths": ["јан", "фев", "мар", "апр", "мај", "јун", "јул", "авг", "сеп", "окт", "ное", "дек"]
+}
diff --git a/node_modules/d3-time-format/locale/nb-NO.json b/node_modules/d3-time-format/locale/nb-NO.json
new file mode 100644
index 00000000..a8bfd20e
--- /dev/null
+++ b/node_modules/d3-time-format/locale/nb-NO.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A den %d. %B %Y %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["søndag", "mandag", "tirsdag", "onsdag", "torsdag", "fredag", "lørdag"],
+ "shortDays": ["søn", "man", "tir", "ons", "tor", "fre", "lør"],
+ "months": ["januar", "februar", "mars", "april", "mai", "juni", "juli", "august", "september", "oktober", "november", "desember"],
+ "shortMonths": ["jan", "feb", "mars", "apr", "mai", "juni", "juli", "aug", "sep", "okt", "nov", "des"]
+}
diff --git a/node_modules/d3-time-format/locale/nl-BE.json b/node_modules/d3-time-format/locale/nl-BE.json
new file mode 100644
index 00000000..69d587e8
--- /dev/null
+++ b/node_modules/d3-time-format/locale/nl-BE.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %e %B %Y %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["zondag", "maandag", "dinsdag", "woensdag", "donderdag", "vrijdag", "zaterdag"],
+ "shortDays": ["zo", "ma", "di", "wo", "do", "vr", "za"],
+ "months": ["januari", "februari", "maart", "april", "mei", "juni", "juli", "augustus", "september", "oktober", "november", "december"],
+ "shortMonths": ["jan", "feb", "mrt", "apr", "mei", "jun", "jul", "aug", "sep", "okt", "nov", "dec"]
+}
diff --git a/node_modules/d3-time-format/locale/nl-NL.json b/node_modules/d3-time-format/locale/nl-NL.json
new file mode 100644
index 00000000..375b0feb
--- /dev/null
+++ b/node_modules/d3-time-format/locale/nl-NL.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %e %B %Y %X",
+ "date": "%d-%m-%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["zondag", "maandag", "dinsdag", "woensdag", "donderdag", "vrijdag", "zaterdag"],
+ "shortDays": ["zo", "ma", "di", "wo", "do", "vr", "za"],
+ "months": ["januari", "februari", "maart", "april", "mei", "juni", "juli", "augustus", "september", "oktober", "november", "december"],
+ "shortMonths": ["jan", "feb", "mrt", "apr", "mei", "jun", "jul", "aug", "sep", "okt", "nov", "dec"]
+}
diff --git a/node_modules/d3-time-format/locale/pl-PL.json b/node_modules/d3-time-format/locale/pl-PL.json
new file mode 100644
index 00000000..616b4cd1
--- /dev/null
+++ b/node_modules/d3-time-format/locale/pl-PL.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e %B %Y, %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Niedziela", "Poniedziałek", "Wtorek", "Środa", "Czwartek", "Piątek", "Sobota"],
+ "shortDays": ["Niedz.", "Pon.", "Wt.", "Śr.", "Czw.", "Pt.", "Sob."],
+ "months": ["Styczeń", "Luty", "Marzec", "Kwiecień", "Maj", "Czerwiec", "Lipiec", "Sierpień", "Wrzesień", "Październik", "Listopad", "Grudzień"],
+ "shortMonths": ["Stycz.", "Luty", "Marz.", "Kwie.", "Maj", "Czerw.", "Lipc.", "Sierp.", "Wrz.", "Paźdz.", "Listop.", "Grudz."]
+}
diff --git a/node_modules/d3-time-format/locale/pt-BR.json b/node_modules/d3-time-format/locale/pt-BR.json
new file mode 100644
index 00000000..4e9ff893
--- /dev/null
+++ b/node_modules/d3-time-format/locale/pt-BR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e de %B de %Y. %X",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Domingo", "Segunda", "Terça", "Quarta", "Quinta", "Sexta", "Sábado"],
+ "shortDays": ["Dom", "Seg", "Ter", "Qua", "Qui", "Sex", "Sáb"],
+ "months": ["Janeiro", "Fevereiro", "Março", "Abril", "Maio", "Junho", "Julho", "Agosto", "Setembro", "Outubro", "Novembro", "Dezembro"],
+ "shortMonths": ["Jan", "Fev", "Mar", "Abr", "Mai", "Jun", "Jul", "Ago", "Set", "Out", "Nov", "Dez"]
+}
diff --git a/node_modules/d3-time-format/locale/ru-RU.json b/node_modules/d3-time-format/locale/ru-RU.json
new file mode 100644
index 00000000..c0423183
--- /dev/null
+++ b/node_modules/d3-time-format/locale/ru-RU.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e %B %Y г. %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["воскресенье", "понедельник", "вторник", "среда", "четверг", "пятница", "суббота"],
+ "shortDays": ["вс", "пн", "вт", "ср", "чт", "пт", "сб"],
+ "months": ["января", "февраля", "марта", "апреля", "мая", "июня", "июля", "августа", "сентября", "октября", "ноября", "декабря"],
+ "shortMonths": ["янв", "фев", "мар", "апр", "май", "июн", "июл", "авг", "сен", "окт", "ноя", "дек"]
+}
diff --git a/node_modules/d3-time-format/locale/sv-SE.json b/node_modules/d3-time-format/locale/sv-SE.json
new file mode 100644
index 00000000..23183880
--- /dev/null
+++ b/node_modules/d3-time-format/locale/sv-SE.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A den %d %B %Y %X",
+ "date": "%Y-%m-%d",
+ "time": "%H:%M:%S",
+ "periods": ["fm", "em"],
+ "days": ["Söndag", "Måndag", "Tisdag", "Onsdag", "Torsdag", "Fredag", "Lördag"],
+ "shortDays": ["Sön", "Mån", "Tis", "Ons", "Tor", "Fre", "Lör"],
+ "months": ["Januari", "Februari", "Mars", "April", "Maj", "Juni", "Juli", "Augusti", "September", "Oktober", "November", "December"],
+ "shortMonths": ["Jan", "Feb", "Mar", "Apr", "Maj", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"]
+}
diff --git a/node_modules/d3-time-format/locale/tr-TR.json b/node_modules/d3-time-format/locale/tr-TR.json
new file mode 100644
index 00000000..ea0557e1
--- /dev/null
+++ b/node_modules/d3-time-format/locale/tr-TR.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%a %e %b %X %Y",
+ "date": "%d/%m/%Y",
+ "time": "%H:%M:%S",
+ "periods": ["AM", "PM"],
+ "days": ["Pazar", "Pazartesi", "Salı", "Çarşamba", "Perşembe", "Cuma", "Cumartesi"],
+ "shortDays": ["Paz", "Pzt", "Sal", "Çar", "Per", "Cum", "Cmt"],
+ "months": ["Ocak", "Şubat", "Mart", "Nisan", "Mayıs", "Haziran", "Temmuz", "Ağustos", "Eylül", "Ekim", "Kasım", "Aralık"],
+ "shortMonths": ["Oca", "Şub", "Mar", "Nis", "May", "Haz", "Tem", "Ağu", "Eyl", "Eki", "Kas", "Ara"]
+}
diff --git a/node_modules/d3-time-format/locale/uk-UA.json b/node_modules/d3-time-format/locale/uk-UA.json
new file mode 100644
index 00000000..555eed4a
--- /dev/null
+++ b/node_modules/d3-time-format/locale/uk-UA.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%A, %e %B %Y р. %X",
+ "date": "%d.%m.%Y",
+ "time": "%H:%M:%S",
+ "periods": ["дп", "пп"],
+ "days": ["неділя", "понеділок", "вівторок", "середа", "четвер", "п'ятниця", "субота"],
+ "shortDays": ["нд", "пн", "вт", "ср", "чт", "пт", "сб"],
+ "months": ["січня", "лютого", "березня", "квітня", "травня", "червня", "липня", "серпня", "вересня", "жовтня", "листопада", "грудня"],
+ "shortMonths": ["січ.", "лют.", "бер.", "квіт.", "трав.", "черв.", "лип.", "серп.", "вер.", "жовт.", "лист.", "груд."]
+}
diff --git a/node_modules/d3-time-format/locale/zh-CN.json b/node_modules/d3-time-format/locale/zh-CN.json
new file mode 100644
index 00000000..762f212a
--- /dev/null
+++ b/node_modules/d3-time-format/locale/zh-CN.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x %A %X",
+ "date": "%Y年%-m月%-d日",
+ "time": "%H:%M:%S",
+ "periods": ["上午", "下午"],
+ "days": ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"],
+ "shortDays": ["周日", "周一", "周二", "周三", "周四", "周五", "周六"],
+ "months": ["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月"],
+ "shortMonths": ["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月"]
+}
diff --git a/node_modules/d3-time-format/locale/zh-TW.json b/node_modules/d3-time-format/locale/zh-TW.json
new file mode 100644
index 00000000..767b2baf
--- /dev/null
+++ b/node_modules/d3-time-format/locale/zh-TW.json
@@ -0,0 +1,10 @@
+{
+ "dateTime": "%x %A %X",
+ "date": "%Y年%-m月%-d日",
+ "time": "%H:%M:%S",
+ "periods": ["上午", "下午"],
+ "days": ["星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"],
+ "shortDays": ["日", "一", "二", "三", "四", "五", "六"],
+ "months": ["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月"],
+ "shortMonths": ["1月", "2月", "3月", "4月", "5月", "6月", "7月", "8月", "9月", "10月", "11月", "12月"]
+}
diff --git a/node_modules/d3-time-format/package.json b/node_modules/d3-time-format/package.json
new file mode 100644
index 00000000..6fbba893
--- /dev/null
+++ b/node_modules/d3-time-format/package.json
@@ -0,0 +1,89 @@
+{
+ "_from": "d3-time-format@4",
+ "_id": "d3-time-format@4.1.0",
+ "_inBundle": false,
+ "_integrity": "sha512-dJxPBlzC7NugB2PDLwo9Q8JiTR3M3e4/XANkreKSUxF8vvXKqm1Yfq4Q5dl8budlunRVlUUaDUgFt7eA8D6NLg==",
+ "_location": "/d3-time-format",
+ "_phantomChildren": {},
+ "_requested": {
+ "type": "range",
+ "registry": true,
+ "raw": "d3-time-format@4",
+ "name": "d3-time-format",
+ "escapedName": "d3-time-format",
+ "rawSpec": "4",
+ "saveSpec": null,
+ "fetchSpec": "4"
+ },
+ "_requiredBy": [
+ "/d3",
+ "/d3-scale"
+ ],
+ "_resolved": "https://registry.npmjs.org/d3-time-format/-/d3-time-format-4.1.0.tgz",
+ "_shasum": "7ab5257a5041d11ecb4fe70a5c7d16a195bb408a",
+ "_spec": "d3-time-format@4",
+ "_where": "C:\\Users\\colbs\\CS4241\\d3a4\\node_modules\\d3",
+ "author": {
+ "name": "Mike Bostock",
+ "url": "http://bost.ocks.org/mike"
+ },
+ "bugs": {
+ "url": "https://github.com/d3/d3-time-format/issues"
+ },
+ "bundleDependencies": false,
+ "dependencies": {
+ "d3-time": "1 - 3"
+ },
+ "deprecated": false,
+ "description": "A JavaScript time formatter and parser inspired by strftime and strptime.",
+ "devDependencies": {
+ "eslint": "8",
+ "mocha": "9",
+ "rollup": "2",
+ "rollup-plugin-terser": "7"
+ },
+ "engines": {
+ "node": ">=12"
+ },
+ "exports": {
+ ".": {
+ "umd": "./dist/d3-time-format.min.js",
+ "default": "./src/index.js"
+ },
+ "./locale/*": "./locale/*.json"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js",
+ "locale/*.json"
+ ],
+ "homepage": "https://d3js.org/d3-time-format/",
+ "jsdelivr": "dist/d3-time-format.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "time",
+ "format",
+ "strftime",
+ "strptime"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-time-format",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-time-format.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "TZ=America/Los_Angeles mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": [
+ "./src/defaultLocale.js"
+ ],
+ "type": "module",
+ "unpkg": "dist/d3-time-format.min.js",
+ "version": "4.1.0"
+}
diff --git a/node_modules/d3-time-format/src/defaultLocale.js b/node_modules/d3-time-format/src/defaultLocale.js
new file mode 100644
index 00000000..d762db51
--- /dev/null
+++ b/node_modules/d3-time-format/src/defaultLocale.js
@@ -0,0 +1,27 @@
+import formatLocale from "./locale.js";
+
+var locale;
+export var timeFormat;
+export var timeParse;
+export var utcFormat;
+export var utcParse;
+
+defaultLocale({
+ dateTime: "%x, %X",
+ date: "%-m/%-d/%Y",
+ time: "%-I:%M:%S %p",
+ periods: ["AM", "PM"],
+ days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
+ shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
+ months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
+ shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
+});
+
+export default function defaultLocale(definition) {
+ locale = formatLocale(definition);
+ timeFormat = locale.format;
+ timeParse = locale.parse;
+ utcFormat = locale.utcFormat;
+ utcParse = locale.utcParse;
+ return locale;
+}
diff --git a/node_modules/d3-time-format/src/index.js b/node_modules/d3-time-format/src/index.js
new file mode 100644
index 00000000..6c93971d
--- /dev/null
+++ b/node_modules/d3-time-format/src/index.js
@@ -0,0 +1,4 @@
+export {default as timeFormatDefaultLocale, timeFormat, timeParse, utcFormat, utcParse} from "./defaultLocale.js";
+export {default as timeFormatLocale} from "./locale.js";
+export {default as isoFormat} from "./isoFormat.js";
+export {default as isoParse} from "./isoParse.js";
diff --git a/node_modules/d3-time-format/src/isoFormat.js b/node_modules/d3-time-format/src/isoFormat.js
new file mode 100644
index 00000000..43185a37
--- /dev/null
+++ b/node_modules/d3-time-format/src/isoFormat.js
@@ -0,0 +1,13 @@
+import {utcFormat} from "./defaultLocale.js";
+
+export var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ";
+
+function formatIsoNative(date) {
+ return date.toISOString();
+}
+
+var formatIso = Date.prototype.toISOString
+ ? formatIsoNative
+ : utcFormat(isoSpecifier);
+
+export default formatIso;
diff --git a/node_modules/d3-time-format/src/isoParse.js b/node_modules/d3-time-format/src/isoParse.js
new file mode 100644
index 00000000..381d1c96
--- /dev/null
+++ b/node_modules/d3-time-format/src/isoParse.js
@@ -0,0 +1,13 @@
+import {isoSpecifier} from "./isoFormat.js";
+import {utcParse} from "./defaultLocale.js";
+
+function parseIsoNative(string) {
+ var date = new Date(string);
+ return isNaN(date) ? null : date;
+}
+
+var parseIso = +new Date("2000-01-01T00:00:00.000Z")
+ ? parseIsoNative
+ : utcParse(isoSpecifier);
+
+export default parseIso;
diff --git a/node_modules/d3-time-format/src/locale.js b/node_modules/d3-time-format/src/locale.js
new file mode 100644
index 00000000..cc0dac25
--- /dev/null
+++ b/node_modules/d3-time-format/src/locale.js
@@ -0,0 +1,697 @@
+import {
+ timeDay,
+ timeSunday,
+ timeMonday,
+ timeThursday,
+ timeYear,
+ utcDay,
+ utcSunday,
+ utcMonday,
+ utcThursday,
+ utcYear
+} from "d3-time";
+
+function localDate(d) {
+ if (0 <= d.y && d.y < 100) {
+ var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L);
+ date.setFullYear(d.y);
+ return date;
+ }
+ return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L);
+}
+
+function utcDate(d) {
+ if (0 <= d.y && d.y < 100) {
+ var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L));
+ date.setUTCFullYear(d.y);
+ return date;
+ }
+ return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L));
+}
+
+function newDate(y, m, d) {
+ return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0};
+}
+
+export default function formatLocale(locale) {
+ var locale_dateTime = locale.dateTime,
+ locale_date = locale.date,
+ locale_time = locale.time,
+ locale_periods = locale.periods,
+ locale_weekdays = locale.days,
+ locale_shortWeekdays = locale.shortDays,
+ locale_months = locale.months,
+ locale_shortMonths = locale.shortMonths;
+
+ var periodRe = formatRe(locale_periods),
+ periodLookup = formatLookup(locale_periods),
+ weekdayRe = formatRe(locale_weekdays),
+ weekdayLookup = formatLookup(locale_weekdays),
+ shortWeekdayRe = formatRe(locale_shortWeekdays),
+ shortWeekdayLookup = formatLookup(locale_shortWeekdays),
+ monthRe = formatRe(locale_months),
+ monthLookup = formatLookup(locale_months),
+ shortMonthRe = formatRe(locale_shortMonths),
+ shortMonthLookup = formatLookup(locale_shortMonths);
+
+ var formats = {
+ "a": formatShortWeekday,
+ "A": formatWeekday,
+ "b": formatShortMonth,
+ "B": formatMonth,
+ "c": null,
+ "d": formatDayOfMonth,
+ "e": formatDayOfMonth,
+ "f": formatMicroseconds,
+ "g": formatYearISO,
+ "G": formatFullYearISO,
+ "H": formatHour24,
+ "I": formatHour12,
+ "j": formatDayOfYear,
+ "L": formatMilliseconds,
+ "m": formatMonthNumber,
+ "M": formatMinutes,
+ "p": formatPeriod,
+ "q": formatQuarter,
+ "Q": formatUnixTimestamp,
+ "s": formatUnixTimestampSeconds,
+ "S": formatSeconds,
+ "u": formatWeekdayNumberMonday,
+ "U": formatWeekNumberSunday,
+ "V": formatWeekNumberISO,
+ "w": formatWeekdayNumberSunday,
+ "W": formatWeekNumberMonday,
+ "x": null,
+ "X": null,
+ "y": formatYear,
+ "Y": formatFullYear,
+ "Z": formatZone,
+ "%": formatLiteralPercent
+ };
+
+ var utcFormats = {
+ "a": formatUTCShortWeekday,
+ "A": formatUTCWeekday,
+ "b": formatUTCShortMonth,
+ "B": formatUTCMonth,
+ "c": null,
+ "d": formatUTCDayOfMonth,
+ "e": formatUTCDayOfMonth,
+ "f": formatUTCMicroseconds,
+ "g": formatUTCYearISO,
+ "G": formatUTCFullYearISO,
+ "H": formatUTCHour24,
+ "I": formatUTCHour12,
+ "j": formatUTCDayOfYear,
+ "L": formatUTCMilliseconds,
+ "m": formatUTCMonthNumber,
+ "M": formatUTCMinutes,
+ "p": formatUTCPeriod,
+ "q": formatUTCQuarter,
+ "Q": formatUnixTimestamp,
+ "s": formatUnixTimestampSeconds,
+ "S": formatUTCSeconds,
+ "u": formatUTCWeekdayNumberMonday,
+ "U": formatUTCWeekNumberSunday,
+ "V": formatUTCWeekNumberISO,
+ "w": formatUTCWeekdayNumberSunday,
+ "W": formatUTCWeekNumberMonday,
+ "x": null,
+ "X": null,
+ "y": formatUTCYear,
+ "Y": formatUTCFullYear,
+ "Z": formatUTCZone,
+ "%": formatLiteralPercent
+ };
+
+ var parses = {
+ "a": parseShortWeekday,
+ "A": parseWeekday,
+ "b": parseShortMonth,
+ "B": parseMonth,
+ "c": parseLocaleDateTime,
+ "d": parseDayOfMonth,
+ "e": parseDayOfMonth,
+ "f": parseMicroseconds,
+ "g": parseYear,
+ "G": parseFullYear,
+ "H": parseHour24,
+ "I": parseHour24,
+ "j": parseDayOfYear,
+ "L": parseMilliseconds,
+ "m": parseMonthNumber,
+ "M": parseMinutes,
+ "p": parsePeriod,
+ "q": parseQuarter,
+ "Q": parseUnixTimestamp,
+ "s": parseUnixTimestampSeconds,
+ "S": parseSeconds,
+ "u": parseWeekdayNumberMonday,
+ "U": parseWeekNumberSunday,
+ "V": parseWeekNumberISO,
+ "w": parseWeekdayNumberSunday,
+ "W": parseWeekNumberMonday,
+ "x": parseLocaleDate,
+ "X": parseLocaleTime,
+ "y": parseYear,
+ "Y": parseFullYear,
+ "Z": parseZone,
+ "%": parseLiteralPercent
+ };
+
+ // These recursive directive definitions must be deferred.
+ formats.x = newFormat(locale_date, formats);
+ formats.X = newFormat(locale_time, formats);
+ formats.c = newFormat(locale_dateTime, formats);
+ utcFormats.x = newFormat(locale_date, utcFormats);
+ utcFormats.X = newFormat(locale_time, utcFormats);
+ utcFormats.c = newFormat(locale_dateTime, utcFormats);
+
+ function newFormat(specifier, formats) {
+ return function(date) {
+ var string = [],
+ i = -1,
+ j = 0,
+ n = specifier.length,
+ c,
+ pad,
+ format;
+
+ if (!(date instanceof Date)) date = new Date(+date);
+
+ while (++i < n) {
+ if (specifier.charCodeAt(i) === 37) {
+ string.push(specifier.slice(j, i));
+ if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i);
+ else pad = c === "e" ? " " : "0";
+ if (format = formats[c]) c = format(date, pad);
+ string.push(c);
+ j = i + 1;
+ }
+ }
+
+ string.push(specifier.slice(j, i));
+ return string.join("");
+ };
+ }
+
+ function newParse(specifier, Z) {
+ return function(string) {
+ var d = newDate(1900, undefined, 1),
+ i = parseSpecifier(d, specifier, string += "", 0),
+ week, day;
+ if (i != string.length) return null;
+
+ // If a UNIX timestamp is specified, return it.
+ if ("Q" in d) return new Date(d.Q);
+ if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0));
+
+ // If this is utcParse, never use the local timezone.
+ if (Z && !("Z" in d)) d.Z = 0;
+
+ // The am-pm flag is 0 for AM, and 1 for PM.
+ if ("p" in d) d.H = d.H % 12 + d.p * 12;
+
+ // If the month was not specified, inherit from the quarter.
+ if (d.m === undefined) d.m = "q" in d ? d.q : 0;
+
+ // Convert day-of-week and week-of-year to day-of-year.
+ if ("V" in d) {
+ if (d.V < 1 || d.V > 53) return null;
+ if (!("w" in d)) d.w = 1;
+ if ("Z" in d) {
+ week = utcDate(newDate(d.y, 0, 1)), day = week.getUTCDay();
+ week = day > 4 || day === 0 ? utcMonday.ceil(week) : utcMonday(week);
+ week = utcDay.offset(week, (d.V - 1) * 7);
+ d.y = week.getUTCFullYear();
+ d.m = week.getUTCMonth();
+ d.d = week.getUTCDate() + (d.w + 6) % 7;
+ } else {
+ week = localDate(newDate(d.y, 0, 1)), day = week.getDay();
+ week = day > 4 || day === 0 ? timeMonday.ceil(week) : timeMonday(week);
+ week = timeDay.offset(week, (d.V - 1) * 7);
+ d.y = week.getFullYear();
+ d.m = week.getMonth();
+ d.d = week.getDate() + (d.w + 6) % 7;
+ }
+ } else if ("W" in d || "U" in d) {
+ if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0;
+ day = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay();
+ d.m = 0;
+ d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day + 5) % 7 : d.w + d.U * 7 - (day + 6) % 7;
+ }
+
+ // If a time zone is specified, all fields are interpreted as UTC and then
+ // offset according to the specified time zone.
+ if ("Z" in d) {
+ d.H += d.Z / 100 | 0;
+ d.M += d.Z % 100;
+ return utcDate(d);
+ }
+
+ // Otherwise, all fields are in local time.
+ return localDate(d);
+ };
+ }
+
+ function parseSpecifier(d, specifier, string, j) {
+ var i = 0,
+ n = specifier.length,
+ m = string.length,
+ c,
+ parse;
+
+ while (i < n) {
+ if (j >= m) return -1;
+ c = specifier.charCodeAt(i++);
+ if (c === 37) {
+ c = specifier.charAt(i++);
+ parse = parses[c in pads ? specifier.charAt(i++) : c];
+ if (!parse || ((j = parse(d, string, j)) < 0)) return -1;
+ } else if (c != string.charCodeAt(j++)) {
+ return -1;
+ }
+ }
+
+ return j;
+ }
+
+ function parsePeriod(d, string, i) {
+ var n = periodRe.exec(string.slice(i));
+ return n ? (d.p = periodLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseShortWeekday(d, string, i) {
+ var n = shortWeekdayRe.exec(string.slice(i));
+ return n ? (d.w = shortWeekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseWeekday(d, string, i) {
+ var n = weekdayRe.exec(string.slice(i));
+ return n ? (d.w = weekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseShortMonth(d, string, i) {
+ var n = shortMonthRe.exec(string.slice(i));
+ return n ? (d.m = shortMonthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseMonth(d, string, i) {
+ var n = monthRe.exec(string.slice(i));
+ return n ? (d.m = monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
+ }
+
+ function parseLocaleDateTime(d, string, i) {
+ return parseSpecifier(d, locale_dateTime, string, i);
+ }
+
+ function parseLocaleDate(d, string, i) {
+ return parseSpecifier(d, locale_date, string, i);
+ }
+
+ function parseLocaleTime(d, string, i) {
+ return parseSpecifier(d, locale_time, string, i);
+ }
+
+ function formatShortWeekday(d) {
+ return locale_shortWeekdays[d.getDay()];
+ }
+
+ function formatWeekday(d) {
+ return locale_weekdays[d.getDay()];
+ }
+
+ function formatShortMonth(d) {
+ return locale_shortMonths[d.getMonth()];
+ }
+
+ function formatMonth(d) {
+ return locale_months[d.getMonth()];
+ }
+
+ function formatPeriod(d) {
+ return locale_periods[+(d.getHours() >= 12)];
+ }
+
+ function formatQuarter(d) {
+ return 1 + ~~(d.getMonth() / 3);
+ }
+
+ function formatUTCShortWeekday(d) {
+ return locale_shortWeekdays[d.getUTCDay()];
+ }
+
+ function formatUTCWeekday(d) {
+ return locale_weekdays[d.getUTCDay()];
+ }
+
+ function formatUTCShortMonth(d) {
+ return locale_shortMonths[d.getUTCMonth()];
+ }
+
+ function formatUTCMonth(d) {
+ return locale_months[d.getUTCMonth()];
+ }
+
+ function formatUTCPeriod(d) {
+ return locale_periods[+(d.getUTCHours() >= 12)];
+ }
+
+ function formatUTCQuarter(d) {
+ return 1 + ~~(d.getUTCMonth() / 3);
+ }
+
+ return {
+ format: function(specifier) {
+ var f = newFormat(specifier += "", formats);
+ f.toString = function() { return specifier; };
+ return f;
+ },
+ parse: function(specifier) {
+ var p = newParse(specifier += "", false);
+ p.toString = function() { return specifier; };
+ return p;
+ },
+ utcFormat: function(specifier) {
+ var f = newFormat(specifier += "", utcFormats);
+ f.toString = function() { return specifier; };
+ return f;
+ },
+ utcParse: function(specifier) {
+ var p = newParse(specifier += "", true);
+ p.toString = function() { return specifier; };
+ return p;
+ }
+ };
+}
+
+var pads = {"-": "", "_": " ", "0": "0"},
+ numberRe = /^\s*\d+/, // note: ignores next directive
+ percentRe = /^%/,
+ requoteRe = /[\\^$*+?|[\]().{}]/g;
+
+function pad(value, fill, width) {
+ var sign = value < 0 ? "-" : "",
+ string = (sign ? -value : value) + "",
+ length = string.length;
+ return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
+}
+
+function requote(s) {
+ return s.replace(requoteRe, "\\$&");
+}
+
+function formatRe(names) {
+ return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i");
+}
+
+function formatLookup(names) {
+ return new Map(names.map((name, i) => [name.toLowerCase(), i]));
+}
+
+function parseWeekdayNumberSunday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.w = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekdayNumberMonday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.u = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberSunday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.U = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberISO(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.V = +n[0], i + n[0].length) : -1;
+}
+
+function parseWeekNumberMonday(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.W = +n[0], i + n[0].length) : -1;
+}
+
+function parseFullYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 4));
+ return n ? (d.y = +n[0], i + n[0].length) : -1;
+}
+
+function parseYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1;
+}
+
+function parseZone(d, string, i) {
+ var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6));
+ return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1;
+}
+
+function parseQuarter(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 1));
+ return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1;
+}
+
+function parseMonthNumber(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.m = n[0] - 1, i + n[0].length) : -1;
+}
+
+function parseDayOfMonth(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.d = +n[0], i + n[0].length) : -1;
+}
+
+function parseDayOfYear(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 3));
+ return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1;
+}
+
+function parseHour24(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.H = +n[0], i + n[0].length) : -1;
+}
+
+function parseMinutes(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.M = +n[0], i + n[0].length) : -1;
+}
+
+function parseSeconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 2));
+ return n ? (d.S = +n[0], i + n[0].length) : -1;
+}
+
+function parseMilliseconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 3));
+ return n ? (d.L = +n[0], i + n[0].length) : -1;
+}
+
+function parseMicroseconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i, i + 6));
+ return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1;
+}
+
+function parseLiteralPercent(d, string, i) {
+ var n = percentRe.exec(string.slice(i, i + 1));
+ return n ? i + n[0].length : -1;
+}
+
+function parseUnixTimestamp(d, string, i) {
+ var n = numberRe.exec(string.slice(i));
+ return n ? (d.Q = +n[0], i + n[0].length) : -1;
+}
+
+function parseUnixTimestampSeconds(d, string, i) {
+ var n = numberRe.exec(string.slice(i));
+ return n ? (d.s = +n[0], i + n[0].length) : -1;
+}
+
+function formatDayOfMonth(d, p) {
+ return pad(d.getDate(), p, 2);
+}
+
+function formatHour24(d, p) {
+ return pad(d.getHours(), p, 2);
+}
+
+function formatHour12(d, p) {
+ return pad(d.getHours() % 12 || 12, p, 2);
+}
+
+function formatDayOfYear(d, p) {
+ return pad(1 + timeDay.count(timeYear(d), d), p, 3);
+}
+
+function formatMilliseconds(d, p) {
+ return pad(d.getMilliseconds(), p, 3);
+}
+
+function formatMicroseconds(d, p) {
+ return formatMilliseconds(d, p) + "000";
+}
+
+function formatMonthNumber(d, p) {
+ return pad(d.getMonth() + 1, p, 2);
+}
+
+function formatMinutes(d, p) {
+ return pad(d.getMinutes(), p, 2);
+}
+
+function formatSeconds(d, p) {
+ return pad(d.getSeconds(), p, 2);
+}
+
+function formatWeekdayNumberMonday(d) {
+ var day = d.getDay();
+ return day === 0 ? 7 : day;
+}
+
+function formatWeekNumberSunday(d, p) {
+ return pad(timeSunday.count(timeYear(d) - 1, d), p, 2);
+}
+
+function dISO(d) {
+ var day = d.getDay();
+ return (day >= 4 || day === 0) ? timeThursday(d) : timeThursday.ceil(d);
+}
+
+function formatWeekNumberISO(d, p) {
+ d = dISO(d);
+ return pad(timeThursday.count(timeYear(d), d) + (timeYear(d).getDay() === 4), p, 2);
+}
+
+function formatWeekdayNumberSunday(d) {
+ return d.getDay();
+}
+
+function formatWeekNumberMonday(d, p) {
+ return pad(timeMonday.count(timeYear(d) - 1, d), p, 2);
+}
+
+function formatYear(d, p) {
+ return pad(d.getFullYear() % 100, p, 2);
+}
+
+function formatYearISO(d, p) {
+ d = dISO(d);
+ return pad(d.getFullYear() % 100, p, 2);
+}
+
+function formatFullYear(d, p) {
+ return pad(d.getFullYear() % 10000, p, 4);
+}
+
+function formatFullYearISO(d, p) {
+ var day = d.getDay();
+ d = (day >= 4 || day === 0) ? timeThursday(d) : timeThursday.ceil(d);
+ return pad(d.getFullYear() % 10000, p, 4);
+}
+
+function formatZone(d) {
+ var z = d.getTimezoneOffset();
+ return (z > 0 ? "-" : (z *= -1, "+"))
+ + pad(z / 60 | 0, "0", 2)
+ + pad(z % 60, "0", 2);
+}
+
+function formatUTCDayOfMonth(d, p) {
+ return pad(d.getUTCDate(), p, 2);
+}
+
+function formatUTCHour24(d, p) {
+ return pad(d.getUTCHours(), p, 2);
+}
+
+function formatUTCHour12(d, p) {
+ return pad(d.getUTCHours() % 12 || 12, p, 2);
+}
+
+function formatUTCDayOfYear(d, p) {
+ return pad(1 + utcDay.count(utcYear(d), d), p, 3);
+}
+
+function formatUTCMilliseconds(d, p) {
+ return pad(d.getUTCMilliseconds(), p, 3);
+}
+
+function formatUTCMicroseconds(d, p) {
+ return formatUTCMilliseconds(d, p) + "000";
+}
+
+function formatUTCMonthNumber(d, p) {
+ return pad(d.getUTCMonth() + 1, p, 2);
+}
+
+function formatUTCMinutes(d, p) {
+ return pad(d.getUTCMinutes(), p, 2);
+}
+
+function formatUTCSeconds(d, p) {
+ return pad(d.getUTCSeconds(), p, 2);
+}
+
+function formatUTCWeekdayNumberMonday(d) {
+ var dow = d.getUTCDay();
+ return dow === 0 ? 7 : dow;
+}
+
+function formatUTCWeekNumberSunday(d, p) {
+ return pad(utcSunday.count(utcYear(d) - 1, d), p, 2);
+}
+
+function UTCdISO(d) {
+ var day = d.getUTCDay();
+ return (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d);
+}
+
+function formatUTCWeekNumberISO(d, p) {
+ d = UTCdISO(d);
+ return pad(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2);
+}
+
+function formatUTCWeekdayNumberSunday(d) {
+ return d.getUTCDay();
+}
+
+function formatUTCWeekNumberMonday(d, p) {
+ return pad(utcMonday.count(utcYear(d) - 1, d), p, 2);
+}
+
+function formatUTCYear(d, p) {
+ return pad(d.getUTCFullYear() % 100, p, 2);
+}
+
+function formatUTCYearISO(d, p) {
+ d = UTCdISO(d);
+ return pad(d.getUTCFullYear() % 100, p, 2);
+}
+
+function formatUTCFullYear(d, p) {
+ return pad(d.getUTCFullYear() % 10000, p, 4);
+}
+
+function formatUTCFullYearISO(d, p) {
+ var day = d.getUTCDay();
+ d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d);
+ return pad(d.getUTCFullYear() % 10000, p, 4);
+}
+
+function formatUTCZone() {
+ return "+0000";
+}
+
+function formatLiteralPercent() {
+ return "%";
+}
+
+function formatUnixTimestamp(d) {
+ return +d;
+}
+
+function formatUnixTimestampSeconds(d) {
+ return Math.floor(+d / 1000);
+}
diff --git a/node_modules/d3-time/LICENSE b/node_modules/d3-time/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-time/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-time/README.md b/node_modules/d3-time/README.md
new file mode 100644
index 00000000..106ee7a7
--- /dev/null
+++ b/node_modules/d3-time/README.md
@@ -0,0 +1,378 @@
+# d3-time
+
+When visualizing time series data, analyzing temporal patterns, or working with time in general, the irregularities of conventional time units quickly become apparent. In the [Gregorian calendar](https://en.wikipedia.org/wiki/Gregorian_calendar), for example, most months have 31 days but some have 28, 29 or 30; most years have 365 days but [leap years](https://en.wikipedia.org/wiki/Leap_year) have 366; and with [daylight saving](https://en.wikipedia.org/wiki/Daylight_saving_time), most days have 24 hours but some have 23 or 25. Adding to complexity, daylight saving conventions vary around the world.
+
+As a result of these temporal peculiarities, it can be difficult to perform seemingly-trivial tasks. For example, if you want to compute the number of days that have passed between two dates, you can’t simply subtract and divide by 24 hours (86,400,000 ms):
+
+```js
+start = new Date(2015, 02, 01) // 2015-03-01T00:00
+end = new Date(2015, 03, 01) // 2015-04-01T00:00
+(end - start) / 864e5 // 30.958333333333332, oops! 🤯
+```
+
+You can, however, use [d3.timeDay](#timeDay).[count](#interval_count):
+
+```js
+d3.timeDay.count(start, end) // 31 😌
+```
+
+The [day](#day) [interval](#api-reference) is one of several provided by d3-time. Each interval represents a conventional unit of time—[hours](#timeHour), [weeks](#timeWeek), [months](#timeMonth), *etc.*—and has methods to calculate boundary dates. For example, [d3.timeDay](#timeDay) computes midnight (typically 12:00 AM local time) of the corresponding day. In addition to [rounding](#interval_round) and [counting](#interval_count), intervals can also be used to generate arrays of boundary dates. For example, to compute each Sunday in the current month:
+
+```js
+start = d3.timeMonth.floor() // 2015-01-01T00:00
+stop = d3.timeMonth.ceil() // 2015-02-01T00:00
+d3.timeWeek.range(start, stop) // [2015-01-07T00:00, 2015-01-14T00:00, 2015-01-21T00:00, 2015-01-28T00:00]
+```
+
+The d3-time module does not implement its own calendaring system; it merely implements a convenient API for calendar math on top of ECMAScript [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date). Thus, it ignores leap seconds and can only work with the local time zone and [Coordinated Universal Time](https://en.wikipedia.org/wiki/Coordinated_Universal_Time) (UTC).
+
+This module is used by D3’s time scales to generate sensible ticks, by D3’s time format, and can also be used directly to do things like [calendar layouts](http://bl.ocks.org/mbostock/4063318).
+
+## Installing
+
+If you use npm, `npm install d3-time`. You can also download the [latest release on GitHub](https://github.com/d3/d3-time/releases/latest). For vanilla HTML in modern browsers, import d3-time from Skypack:
+
+```html
+
+```
+
+For legacy environments, you can load d3-time’s UMD bundle from an npm-based CDN such as jsDelivr; a `d3` global is exported:
+
+```html
+
+
+
+```
+
+[Try d3-time in your browser.](https://observablehq.com/collection/@d3/d3-time)
+
+## API Reference
+
+# interval ([date ]) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Equivalent to [*interval*.floor](#interval_floor), except if *date* is not specified, it defaults to the current time. For example, [d3.timeYear](#timeYear)(*date*) and d3.timeYear.floor(*date*) are equivalent.
+
+```js
+monday = d3.timeMonday() // the latest preceeding Monday, local time
+```
+
+# interval .floor (date ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a new date representing the latest interval boundary date before or equal to *date*. For example, [d3.timeDay](#timeDay).floor(*date*) typically returns 12:00 AM local time on the given *date*.
+
+This method is idempotent: if the specified *date* is already floored to the current interval, a new date with an identical time is returned. Furthermore, the returned date is the minimum expressible value of the associated interval, such that *interval*.floor(*interval*.floor(*date*) - 1) returns the preceeding interval boundary date.
+
+Note that the `==` and `===` operators do not compare by value with [Date](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) objects, and thus you cannot use them to tell whether the specified *date* has already been floored. Instead, coerce to a number and then compare:
+
+```js
+// Returns true if the specified date is a day boundary.
+function isDay(date) {
+ return +d3.timeDay.floor(date) === +date;
+}
+```
+
+This is more reliable than testing whether the time is 12:00 AM, as in some time zones midnight may not exist due to daylight saving.
+
+# interval .round (date ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a new date representing the closest interval boundary date to *date*. For example, [d3.timeDay](#timeDay).round(*date*) typically returns 12:00 AM local time on the given *date* if it is on or before noon, and 12:00 AM of the following day if it is after noon.
+
+This method is idempotent: if the specified *date* is already rounded to the current interval, a new date with an identical time is returned.
+
+# interval .ceil (date ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a new date representing the earliest interval boundary date after or equal to *date*. For example, [d3.timeDay](#timeDay).ceil(*date*) typically returns 12:00 AM local time on the date following the given *date*.
+
+This method is idempotent: if the specified *date* is already ceilinged to the current interval, a new date with an identical time is returned. Furthermore, the returned date is the maximum expressible value of the associated interval, such that *interval*.ceil(*interval*.ceil(*date*) + 1) returns the following interval boundary date.
+
+# interval .offset (date [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a new date equal to *date* plus *step* intervals. If *step* is not specified it defaults to 1. If *step* is negative, then the returned date will be before the specified *date*; if *step* is zero, then a copy of the specified *date* is returned; if *step* is not an integer, it is [floored](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor). This method does not round the specified *date* to the interval. For example, if *date* is today at 5:34 PM, then [d3.timeDay](#timeDay).offset(*date*, 1) returns 5:34 PM tomorrow (even if daylight saving changes!).
+
+# interval .range (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns an array of dates representing every interval boundary after or equal to *start* (inclusive) and before *stop* (exclusive). If *step* is specified, then every *step*th boundary will be returned; for example, for the [d3.timeDay](#timeDay) interval a *step* of 2 will return every other day. If *step* is not an integer, it is [floored](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor).
+
+The first date in the returned array is the earliest boundary after or equal to *start*; subsequent dates are [offset](#interval_offset) by *step* intervals and [floored](#interval_floor). Thus, two overlapping ranges may be consistent. For example, this range contains odd days:
+
+```js
+d3.timeDay.range(new Date(2015, 0, 1), new Date(2015, 0, 7), 2) // [2015-01-01T00:00, 2015-01-03T00:00, 2015-01-05T00:00]
+```
+
+While this contains even days:
+
+```js
+d3.timeDay.range(new Date(2015, 0, 2), new Date(2015, 0, 8), 2) // [2015-01-02T00:00, 2015-01-04T00:00, 2015-01-06T00:00]
+```
+
+To make ranges consistent when a *step* is specified, use [*interval*.every](#interval_every) instead.
+
+# interval .filter (test ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a new interval that is a filtered subset of this interval using the specified *test* function. The *test* function is passed a date and should return true if and only if the specified date should be considered part of the interval. For example, to create an interval that returns the 1st, 11th, 21th and 31th (if it exists) of each month:
+
+```js
+d3.timeDay.filter(d => (d.getDate() - 1) % 10 === 0)
+```
+
+The returned filtered interval does not support [*interval*.count](#interval_count). See also [*interval*.every](#interval_every).
+
+# interval .every (step ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns a [filtered](#interval_filter) view of this interval representing every *step*th date. The meaning of *step* is dependent on this interval’s parent interval as defined by the field function. For example, [d3.timeMinute](#timeMinute).every(15) returns an interval representing every fifteen minutes, starting on the hour: :00, :15, :30, :45, etc. Note that for some intervals, the resulting dates may not be uniformly-spaced; [d3.timeDay](#timeDay)’s parent interval is [d3.timeMonth](#timeMonth), and thus the interval number resets at the start of each month. If *step* is not valid, returns null. If *step* is one, returns this interval.
+
+This method can be used in conjunction with [*interval*.range](#interval_range) to ensure that two overlapping ranges are consistent. For example, this range contains odd days:
+
+```js
+d3.timeDay.every(2).range(new Date(2015, 0, 1), new Date(2015, 0, 7)) // [2015-01-01T00:00, 2015-01-03T00:00, 2015-01-05T00:00]
+```
+
+As does this one:
+
+```js
+d3.timeDay.every(2).range(new Date(2015, 0, 2), new Date(2015, 0, 8)) // [2015-01-03T00:00, 2015-01-05T00:00, 2015-01-07T00:00]
+```
+
+The returned filtered interval does not support [*interval*.count](#interval_count). See also [*interval*.filter](#interval_filter).
+
+# interval .count (start , end ) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Returns the number of interval boundaries after *start* (exclusive) and before or equal to *end* (inclusive). Note that this behavior is slightly different than [*interval*.range](#interval_range) because its purpose is to return the zero-based number of the specified *end* date relative to the specified *start* date. For example, to compute the current zero-based day-of-year number:
+
+```js
+d3.timeDay.count(d3.timeYear(now), now) // 177
+```
+
+Likewise, to compute the current zero-based week-of-year number for weeks that start on Sunday:
+
+```js
+d3.timeSunday.count(d3.timeYear(now), now) // 25
+```
+
+# d3.timeInterval (floor , offset [, count [, field ]]) · [Source](https://github.com/d3/d3-time/blob/master/src/interval.js)
+
+Constructs a new custom interval given the specified *floor* and *offset* functions and an optional *count* function.
+
+The *floor* function takes a single date as an argument and rounds it down to the nearest interval boundary.
+
+The *offset* function takes a date and an integer step as arguments and advances the specified date by the specified number of boundaries; the step may be positive, negative or zero.
+
+The optional *count* function takes a start date and an end date, already floored to the current interval, and returns the number of boundaries between the start (exclusive) and end (inclusive). If a *count* function is not specified, the returned interval does not expose [*interval*.count](#interval_count) or [*interval*.every](#interval_every) methods. Note: due to an internal optimization, the specified *count* function must not invoke *interval*.count on other time intervals.
+
+The optional *field* function takes a date, already floored to the current interval, and returns the field value of the specified date, corresponding to the number of boundaries between this date (exclusive) and the latest previous parent boundary. For example, for the [d3.timeDay](#timeDay) interval, this returns the number of days since the start of the month. If a *field* function is not specified, it defaults to counting the number of interval boundaries since the UNIX epoch of January 1, 1970 UTC. The *field* function defines the behavior of [*interval*.every](#interval_every).
+
+### Intervals
+
+The following intervals are provided:
+
+# d3.timeMillisecond · [Source](https://github.com/d3/d3-time/blob/master/src/millisecond.js "Source")
+# d3.utcMillisecond
+
+Milliseconds; the shortest available time unit.
+
+# d3.timeSecond · [Source](https://github.com/d3/d3-time/blob/master/src/second.js "Source")
+# d3.utcSecond
+
+Seconds (e.g., 01:23:45.0000 AM); 1,000 milliseconds.
+
+# d3.timeMinute · [Source](https://github.com/d3/d3-time/blob/master/src/minute.js "Source")
+# d3.utcMinute · [Source](https://github.com/d3/d3-time/blob/master/src/utcMinute.js "Source")
+
+Minutes (e.g., 01:02:00 AM); 60 seconds. Note that ECMAScript [ignores leap seconds](http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.1.1).
+
+# d3.timeHour · [Source](https://github.com/d3/d3-time/blob/master/src/hour.js "Source")
+# d3.utcHour · [Source](https://github.com/d3/d3-time/blob/master/src/utcHour.js "Source")
+
+Hours (e.g., 01:00 AM); 60 minutes. Note that advancing time by one hour in local time can return the same hour or skip an hour due to daylight saving.
+
+# d3.timeDay · [Source](https://github.com/d3/d3-time/blob/master/src/day.js "Source")
+# d3.utcDay · [Source](https://github.com/d3/d3-time/blob/master/src/utcDay.js "Source")
+
+Days (e.g., February 7, 2012 at 12:00 AM); typically 24 hours. Days in local time may range from 23 to 25 hours due to daylight saving.
+
+# d3.timeWeek · [Source](https://github.com/d3/d3-time/blob/master/src/week.js "Source")
+# d3.utcWeek · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js "Source")
+
+Alias for [d3.timeSunday](#timeSunday); 7 days and typically 168 hours. Weeks in local time may range from 167 to 169 hours due on daylight saving.
+
+# d3.timeSunday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcSunday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Sunday-based weeks (e.g., February 5, 2012 at 12:00 AM).
+
+# d3.timeMonday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcMonday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Monday-based weeks (e.g., February 6, 2012 at 12:00 AM).
+
+# d3.timeTuesday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcTuesday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Tuesday-based weeks (e.g., February 7, 2012 at 12:00 AM).
+
+# d3.timeWednesday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcWednesday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Wednesday-based weeks (e.g., February 8, 2012 at 12:00 AM).
+
+# d3.timeThursday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcThursday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Thursday-based weeks (e.g., February 9, 2012 at 12:00 AM).
+
+# d3.timeFriday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcFriday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Friday-based weeks (e.g., February 10, 2012 at 12:00 AM).
+
+# d3.timeSaturday · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcSaturday · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Saturday-based weeks (e.g., February 11, 2012 at 12:00 AM).
+
+# d3.timeMonth · [Source](https://github.com/d3/d3-time/blob/master/src/month.js "Source")
+# d3.utcMonth · [Source](https://github.com/d3/d3-time/blob/master/src/utcMonth.js "Source")
+
+Months (e.g., February 1, 2012 at 12:00 AM); ranges from 28 to 31 days.
+
+# d3.timeYear · [Source](https://github.com/d3/d3-time/blob/master/src/year.js "Source")
+# d3.utcYear · [Source](https://github.com/d3/d3-time/blob/master/src/utcYear.js "Source")
+
+Years (e.g., January 1, 2012 at 12:00 AM); ranges from 365 to 366 days.
+
+### Ranges
+
+For convenience, aliases for [*interval*.range](#interval_range) are also provided as plural forms of the corresponding interval.
+
+# d3.timeMilliseconds (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/millisecond.js)
+# d3.utcMilliseconds (start , stop [, step ])
+
+Aliases for [d3.timeMillisecond](#timeMillisecond).[range](#interval_range) and [d3.utcMillisecond](#timeMillisecond).[range](#interval_range).
+
+# d3.timeSeconds (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/second.js)
+# d3.utcSeconds (start , stop [, step ])
+
+Aliases for [d3.timeSecond](#timeSecond).[range](#interval_range) and [d3.utcSecond](#timeSecond).[range](#interval_range).
+
+# d3.timeMinutes (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/minute.js)
+# d3.utcMinutes (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcMinute.js)
+
+Aliases for [d3.timeMinute](#timeMinute).[range](#interval_range) and [d3.utcMinute](#timeMinute).[range](#interval_range).
+
+# d3.timeHours (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/hour.js)
+# d3.utcHours (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcHour.js)
+
+Aliases for [d3.timeHour](#timeHour).[range](#interval_range) and [d3.utcHour](#timeHour).[range](#interval_range).
+
+# d3.timeDays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/day.js)
+# d3.utcDays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcDay.js)
+
+Aliases for [d3.timeDay](#timeDay).[range](#interval_range) and [d3.utcDay](#timeDay).[range](#interval_range).
+
+# d3.timeWeeks (start , stop [, step ])
+# d3.utcWeeks (start , stop [, step ])
+
+Aliases for [d3.timeWeek](#timeWeek).[range](#interval_range) and [d3.utcWeek](#timeWeek).[range](#interval_range).
+
+# d3.timeSundays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcSundays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeSunday](#timeSunday).[range](#interval_range) and [d3.utcSunday](#timeSunday).[range](#interval_range).
+
+# d3.timeMondays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcMondays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeMonday](#timeMonday).[range](#interval_range) and [d3.utcMonday](#timeMonday).[range](#interval_range).
+
+# d3.timeTuesdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcTuesdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeTuesday](#timeTuesday).[range](#interval_range) and [d3.utcTuesday](#timeTuesday).[range](#interval_range).
+
+# d3.timeWednesdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcWednesdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeWednesday](#timeWednesday).[range](#interval_range) and [d3.utcWednesday](#timeWednesday).[range](#interval_range).
+
+# d3.timeThursdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcThursdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeThursday](#timeThursday).[range](#interval_range) and [d3.utcThursday](#timeThursday).[range](#interval_range).
+
+# d3.timeFridays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcFridays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeFriday](#timeFriday).[range](#interval_range) and [d3.utcFriday](#timeFriday).[range](#interval_range).
+
+# d3.timeSaturdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/week.js)
+# d3.utcSaturdays (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcWeek.js)
+
+Aliases for [d3.timeSaturday](#timeSaturday).[range](#interval_range) and [d3.utcSaturday](#timeSaturday).[range](#interval_range).
+
+# d3.timeMonths (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/month.js)
+# d3.utcMonths (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcMonth.js)
+
+Aliases for [d3.timeMonth](#timeMonth).[range](#interval_range) and [d3.utcMonth](#timeMonth).[range](#interval_range).
+
+# d3.timeYears (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/year.js)
+# d3.utcYears (start , stop [, step ]) · [Source](https://github.com/d3/d3-time/blob/master/src/utcYear.js)
+
+Aliases for [d3.timeYear](#timeYear).[range](#interval_range) and [d3.utcYear](#timeYear).[range](#interval_range).
+
+### Ticks
+
+# d3.timeTicks (start , stop , count ) · [Source](https://github.com/d3/d3-time/blob/master/src/ticks.js)
+
+Equivalent to [d3.utcTicks](#utcTicks), but in local time.
+
+# d3.timeTickInterval (start , stop , count ) · [Source](https://github.com/d3/d3-time/blob/master/src/ticks.js)
+
+Returns the time interval that would be used by [d3.timeTicks](#timeTicks) given the same arguments.
+
+# d3.utcTicks (start , stop , count ) · [Source](https://github.com/d3/d3-time/blob/master/src/ticks.js)
+
+Returns an array of approximately *count* dates at regular intervals between *start* and *stop* (inclusive). If *stop* is before *start*, dates are returned in reverse chronological order; otherwise dates are returned in chronological order. The following UTC time intervals are considered:
+
+* 1 second
+* 5 seconds
+* 15 seconds
+* 30 seconds
+* 1 minute
+* 5 minutes
+* 15 minutes
+* 30 minutes
+* 1 hour
+* 3 hours
+* 6 hours
+* 12 hours
+* 1 day
+* 2 days
+* 1 week
+* 1 month
+* 3 months
+* 1 year
+
+Multiples of milliseconds (for small ranges) and years (for large ranges) are also considered, following the rules of [d3.ticks](https://github.com/d3/d3-array/blob/master/README.md#ticks). The interval producing the number of dates that is closest to *count* is used. For example:
+
+```js
+start = new Date(Date.UTC(1970, 2, 1))
+stop = new Date(Date.UTC(1996, 2, 19))
+count = 4
+d3.utcTicks(start, stop, count) // [1975-01-01, 1980-01-01, 1985-01-01, 1990-01-01, 1995-01-01]
+```
+
+If *count* is a time interval, this function behaves similarly to [*interval*.range](#interval_range) except that both *start* and *stop* are inclusive and it may return dates in reverse chronological order if *stop* is before *start*.
+
+# d3.utcTickInterval (start , stop , count ) · [Source](https://github.com/d3/d3-time/blob/master/src/ticks.js)
+
+Returns the time interval that would be used by [d3.utcTicks](#utcTicks) given the same arguments. If there is no associated interval, such as when *start* or *stop* is invalid, returns null.
diff --git a/node_modules/d3-time/dist/d3-time.js b/node_modules/d3-time/dist/d3-time.js
new file mode 100644
index 00000000..cde0a51e
--- /dev/null
+++ b/node_modules/d3-time/dist/d3-time.js
@@ -0,0 +1,422 @@
+// https://d3js.org/d3-time/ v3.0.0 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('d3-array')) :
+typeof define === 'function' && define.amd ? define(['exports', 'd3-array'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}, global.d3));
+}(this, (function (exports, d3Array) { 'use strict';
+
+var t0 = new Date,
+ t1 = new Date;
+
+function newInterval(floori, offseti, count, field) {
+
+ function interval(date) {
+ return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date;
+ }
+
+ interval.floor = function(date) {
+ return floori(date = new Date(+date)), date;
+ };
+
+ interval.ceil = function(date) {
+ return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date;
+ };
+
+ interval.round = function(date) {
+ var d0 = interval(date),
+ d1 = interval.ceil(date);
+ return date - d0 < d1 - date ? d0 : d1;
+ };
+
+ interval.offset = function(date, step) {
+ return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date;
+ };
+
+ interval.range = function(start, stop, step) {
+ var range = [], previous;
+ start = interval.ceil(start);
+ step = step == null ? 1 : Math.floor(step);
+ if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date
+ do range.push(previous = new Date(+start)), offseti(start, step), floori(start);
+ while (previous < start && start < stop);
+ return range;
+ };
+
+ interval.filter = function(test) {
+ return newInterval(function(date) {
+ if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1);
+ }, function(date, step) {
+ if (date >= date) {
+ if (step < 0) while (++step <= 0) {
+ while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty
+ } else while (--step >= 0) {
+ while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty
+ }
+ }
+ });
+ };
+
+ if (count) {
+ interval.count = function(start, end) {
+ t0.setTime(+start), t1.setTime(+end);
+ floori(t0), floori(t1);
+ return Math.floor(count(t0, t1));
+ };
+
+ interval.every = function(step) {
+ step = Math.floor(step);
+ return !isFinite(step) || !(step > 0) ? null
+ : !(step > 1) ? interval
+ : interval.filter(field
+ ? function(d) { return field(d) % step === 0; }
+ : function(d) { return interval.count(0, d) % step === 0; });
+ };
+ }
+
+ return interval;
+}
+
+var millisecond = newInterval(function() {
+ // noop
+}, function(date, step) {
+ date.setTime(+date + step);
+}, function(start, end) {
+ return end - start;
+});
+
+// An optimized implementation for this simple case.
+millisecond.every = function(k) {
+ k = Math.floor(k);
+ if (!isFinite(k) || !(k > 0)) return null;
+ if (!(k > 1)) return millisecond;
+ return newInterval(function(date) {
+ date.setTime(Math.floor(date / k) * k);
+ }, function(date, step) {
+ date.setTime(+date + step * k);
+ }, function(start, end) {
+ return (end - start) / k;
+ });
+};
+var milliseconds = millisecond.range;
+
+const durationSecond = 1000;
+const durationMinute = durationSecond * 60;
+const durationHour = durationMinute * 60;
+const durationDay = durationHour * 24;
+const durationWeek = durationDay * 7;
+const durationMonth = durationDay * 30;
+const durationYear = durationDay * 365;
+
+var second = newInterval(function(date) {
+ date.setTime(date - date.getMilliseconds());
+}, function(date, step) {
+ date.setTime(+date + step * durationSecond);
+}, function(start, end) {
+ return (end - start) / durationSecond;
+}, function(date) {
+ return date.getUTCSeconds();
+});
+var seconds = second.range;
+
+var minute = newInterval(function(date) {
+ date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond);
+}, function(date, step) {
+ date.setTime(+date + step * durationMinute);
+}, function(start, end) {
+ return (end - start) / durationMinute;
+}, function(date) {
+ return date.getMinutes();
+});
+var minutes = minute.range;
+
+var hour = newInterval(function(date) {
+ date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute);
+}, function(date, step) {
+ date.setTime(+date + step * durationHour);
+}, function(start, end) {
+ return (end - start) / durationHour;
+}, function(date) {
+ return date.getHours();
+});
+var hours = hour.range;
+
+var day = newInterval(
+ date => date.setHours(0, 0, 0, 0),
+ (date, step) => date.setDate(date.getDate() + step),
+ (start, end) => (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay,
+ date => date.getDate() - 1
+);
+var days = day.range;
+
+function weekday(i) {
+ return newInterval(function(date) {
+ date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);
+ date.setHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setDate(date.getDate() + step * 7);
+ }, function(start, end) {
+ return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;
+ });
+}
+
+var sunday = weekday(0);
+var monday = weekday(1);
+var tuesday = weekday(2);
+var wednesday = weekday(3);
+var thursday = weekday(4);
+var friday = weekday(5);
+var saturday = weekday(6);
+
+var sundays = sunday.range;
+var mondays = monday.range;
+var tuesdays = tuesday.range;
+var wednesdays = wednesday.range;
+var thursdays = thursday.range;
+var fridays = friday.range;
+var saturdays = saturday.range;
+
+var month = newInterval(function(date) {
+ date.setDate(1);
+ date.setHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setMonth(date.getMonth() + step);
+}, function(start, end) {
+ return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12;
+}, function(date) {
+ return date.getMonth();
+});
+var months = month.range;
+
+var year = newInterval(function(date) {
+ date.setMonth(0, 1);
+ date.setHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setFullYear(date.getFullYear() + step);
+}, function(start, end) {
+ return end.getFullYear() - start.getFullYear();
+}, function(date) {
+ return date.getFullYear();
+});
+
+// An optimized implementation for this simple case.
+year.every = function(k) {
+ return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) {
+ date.setFullYear(Math.floor(date.getFullYear() / k) * k);
+ date.setMonth(0, 1);
+ date.setHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setFullYear(date.getFullYear() + step * k);
+ });
+};
+var years = year.range;
+
+var utcMinute = newInterval(function(date) {
+ date.setUTCSeconds(0, 0);
+}, function(date, step) {
+ date.setTime(+date + step * durationMinute);
+}, function(start, end) {
+ return (end - start) / durationMinute;
+}, function(date) {
+ return date.getUTCMinutes();
+});
+var utcMinutes = utcMinute.range;
+
+var utcHour = newInterval(function(date) {
+ date.setUTCMinutes(0, 0, 0);
+}, function(date, step) {
+ date.setTime(+date + step * durationHour);
+}, function(start, end) {
+ return (end - start) / durationHour;
+}, function(date) {
+ return date.getUTCHours();
+});
+var utcHours = utcHour.range;
+
+var utcDay = newInterval(function(date) {
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCDate(date.getUTCDate() + step);
+}, function(start, end) {
+ return (end - start) / durationDay;
+}, function(date) {
+ return date.getUTCDate() - 1;
+});
+var utcDays = utcDay.range;
+
+function utcWeekday(i) {
+ return newInterval(function(date) {
+ date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);
+ date.setUTCHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setUTCDate(date.getUTCDate() + step * 7);
+ }, function(start, end) {
+ return (end - start) / durationWeek;
+ });
+}
+
+var utcSunday = utcWeekday(0);
+var utcMonday = utcWeekday(1);
+var utcTuesday = utcWeekday(2);
+var utcWednesday = utcWeekday(3);
+var utcThursday = utcWeekday(4);
+var utcFriday = utcWeekday(5);
+var utcSaturday = utcWeekday(6);
+
+var utcSundays = utcSunday.range;
+var utcMondays = utcMonday.range;
+var utcTuesdays = utcTuesday.range;
+var utcWednesdays = utcWednesday.range;
+var utcThursdays = utcThursday.range;
+var utcFridays = utcFriday.range;
+var utcSaturdays = utcSaturday.range;
+
+var utcMonth = newInterval(function(date) {
+ date.setUTCDate(1);
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCMonth(date.getUTCMonth() + step);
+}, function(start, end) {
+ return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12;
+}, function(date) {
+ return date.getUTCMonth();
+});
+var utcMonths = utcMonth.range;
+
+var utcYear = newInterval(function(date) {
+ date.setUTCMonth(0, 1);
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCFullYear(date.getUTCFullYear() + step);
+}, function(start, end) {
+ return end.getUTCFullYear() - start.getUTCFullYear();
+}, function(date) {
+ return date.getUTCFullYear();
+});
+
+// An optimized implementation for this simple case.
+utcYear.every = function(k) {
+ return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) {
+ date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);
+ date.setUTCMonth(0, 1);
+ date.setUTCHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setUTCFullYear(date.getUTCFullYear() + step * k);
+ });
+};
+var utcYears = utcYear.range;
+
+function ticker(year, month, week, day, hour, minute) {
+
+ const tickIntervals = [
+ [second, 1, durationSecond],
+ [second, 5, 5 * durationSecond],
+ [second, 15, 15 * durationSecond],
+ [second, 30, 30 * durationSecond],
+ [minute, 1, durationMinute],
+ [minute, 5, 5 * durationMinute],
+ [minute, 15, 15 * durationMinute],
+ [minute, 30, 30 * durationMinute],
+ [ hour, 1, durationHour ],
+ [ hour, 3, 3 * durationHour ],
+ [ hour, 6, 6 * durationHour ],
+ [ hour, 12, 12 * durationHour ],
+ [ day, 1, durationDay ],
+ [ day, 2, 2 * durationDay ],
+ [ week, 1, durationWeek ],
+ [ month, 1, durationMonth ],
+ [ month, 3, 3 * durationMonth ],
+ [ year, 1, durationYear ]
+ ];
+
+ function ticks(start, stop, count) {
+ const reverse = stop < start;
+ if (reverse) [start, stop] = [stop, start];
+ const interval = count && typeof count.range === "function" ? count : tickInterval(start, stop, count);
+ const ticks = interval ? interval.range(start, +stop + 1) : []; // inclusive stop
+ return reverse ? ticks.reverse() : ticks;
+ }
+
+ function tickInterval(start, stop, count) {
+ const target = Math.abs(stop - start) / count;
+ const i = d3Array.bisector(([,, step]) => step).right(tickIntervals, target);
+ if (i === tickIntervals.length) return year.every(d3Array.tickStep(start / durationYear, stop / durationYear, count));
+ if (i === 0) return millisecond.every(Math.max(d3Array.tickStep(start, stop, count), 1));
+ const [t, step] = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i];
+ return t.every(step);
+ }
+
+ return [ticks, tickInterval];
+}
+
+const [utcTicks, utcTickInterval] = ticker(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute);
+const [timeTicks, timeTickInterval] = ticker(year, month, sunday, day, hour, minute);
+
+exports.timeDay = day;
+exports.timeDays = days;
+exports.timeFriday = friday;
+exports.timeFridays = fridays;
+exports.timeHour = hour;
+exports.timeHours = hours;
+exports.timeInterval = newInterval;
+exports.timeMillisecond = millisecond;
+exports.timeMilliseconds = milliseconds;
+exports.timeMinute = minute;
+exports.timeMinutes = minutes;
+exports.timeMonday = monday;
+exports.timeMondays = mondays;
+exports.timeMonth = month;
+exports.timeMonths = months;
+exports.timeSaturday = saturday;
+exports.timeSaturdays = saturdays;
+exports.timeSecond = second;
+exports.timeSeconds = seconds;
+exports.timeSunday = sunday;
+exports.timeSundays = sundays;
+exports.timeThursday = thursday;
+exports.timeThursdays = thursdays;
+exports.timeTickInterval = timeTickInterval;
+exports.timeTicks = timeTicks;
+exports.timeTuesday = tuesday;
+exports.timeTuesdays = tuesdays;
+exports.timeWednesday = wednesday;
+exports.timeWednesdays = wednesdays;
+exports.timeWeek = sunday;
+exports.timeWeeks = sundays;
+exports.timeYear = year;
+exports.timeYears = years;
+exports.utcDay = utcDay;
+exports.utcDays = utcDays;
+exports.utcFriday = utcFriday;
+exports.utcFridays = utcFridays;
+exports.utcHour = utcHour;
+exports.utcHours = utcHours;
+exports.utcMillisecond = millisecond;
+exports.utcMilliseconds = milliseconds;
+exports.utcMinute = utcMinute;
+exports.utcMinutes = utcMinutes;
+exports.utcMonday = utcMonday;
+exports.utcMondays = utcMondays;
+exports.utcMonth = utcMonth;
+exports.utcMonths = utcMonths;
+exports.utcSaturday = utcSaturday;
+exports.utcSaturdays = utcSaturdays;
+exports.utcSecond = second;
+exports.utcSeconds = seconds;
+exports.utcSunday = utcSunday;
+exports.utcSundays = utcSundays;
+exports.utcThursday = utcThursday;
+exports.utcThursdays = utcThursdays;
+exports.utcTickInterval = utcTickInterval;
+exports.utcTicks = utcTicks;
+exports.utcTuesday = utcTuesday;
+exports.utcTuesdays = utcTuesdays;
+exports.utcWednesday = utcWednesday;
+exports.utcWednesdays = utcWednesdays;
+exports.utcWeek = utcSunday;
+exports.utcWeeks = utcSundays;
+exports.utcYear = utcYear;
+exports.utcYears = utcYears;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/node_modules/d3-time/dist/d3-time.min.js b/node_modules/d3-time/dist/d3-time.min.js
new file mode 100644
index 00000000..b7e6e8c0
--- /dev/null
+++ b/node_modules/d3-time/dist/d3-time.min.js
@@ -0,0 +1,2 @@
+// https://d3js.org/d3-time/ v3.0.0 Copyright 2010-2021 Mike Bostock
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("d3-array")):"function"==typeof define&&define.amd?define(["exports","d3-array"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).d3=e.d3||{},e.d3)}(this,(function(e,t){"use strict";var n=new Date,u=new Date;function r(e,t,i,o){function a(t){return e(t=0===arguments.length?new Date:new Date(+t)),t}return a.floor=function(t){return e(t=new Date(+t)),t},a.ceil=function(n){return e(n=new Date(n-1)),t(n,1),e(n),n},a.round=function(e){var t=a(e),n=a.ceil(e);return e-t0))return o;do{o.push(i=new Date(+n)),t(n,r),e(n)}while(i=t)for(;e(t),!n(t);)t.setTime(t-1)}),(function(e,u){if(e>=e)if(u<0)for(;++u<=0;)for(;t(e,-1),!n(e););else for(;--u>=0;)for(;t(e,1),!n(e););}))},i&&(a.count=function(t,r){return n.setTime(+t),u.setTime(+r),e(n),e(u),Math.floor(i(n,u))},a.every=function(e){return e=Math.floor(e),isFinite(e)&&e>0?e>1?a.filter(o?function(t){return o(t)%e==0}:function(t){return a.count(0,t)%e==0}):a:null}),a}var i=r((function(){}),(function(e,t){e.setTime(+e+t)}),(function(e,t){return t-e}));i.every=function(e){return e=Math.floor(e),isFinite(e)&&e>0?e>1?r((function(t){t.setTime(Math.floor(t/e)*e)}),(function(t,n){t.setTime(+t+n*e)}),(function(t,n){return(n-t)/e})):i:null};var o=i.range;const a=1e3,c=6e4,s=36e5,f=864e5,l=6048e5,g=2592e6,T=31536e6;var d=r((function(e){e.setTime(e-e.getMilliseconds())}),(function(e,t){e.setTime(+e+t*a)}),(function(e,t){return(t-e)/a}),(function(e){return e.getUTCSeconds()})),m=d.range,M=r((function(e){e.setTime(e-e.getMilliseconds()-e.getSeconds()*a)}),(function(e,t){e.setTime(+e+t*c)}),(function(e,t){return(t-e)/c}),(function(e){return e.getMinutes()})),y=M.range,h=r((function(e){e.setTime(e-e.getMilliseconds()-e.getSeconds()*a-e.getMinutes()*c)}),(function(e,t){e.setTime(+e+t*s)}),(function(e,t){return(t-e)/s}),(function(e){return e.getHours()})),C=h.range,U=r((e=>e.setHours(0,0,0,0)),((e,t)=>e.setDate(e.getDate()+t)),((e,t)=>(t-e-(t.getTimezoneOffset()-e.getTimezoneOffset())*c)/f),(e=>e.getDate()-1)),D=U.range;function F(e){return r((function(t){t.setDate(t.getDate()-(t.getDay()+7-e)%7),t.setHours(0,0,0,0)}),(function(e,t){e.setDate(e.getDate()+7*t)}),(function(e,t){return(t-e-(t.getTimezoneOffset()-e.getTimezoneOffset())*c)/l}))}var Y=F(0),v=F(1),S=F(2),H=F(3),p=F(4),k=F(5),w=F(6),W=Y.range,b=v.range,O=S.range,x=H.range,z=p.range,I=k.range,j=w.range,_=r((function(e){e.setDate(1),e.setHours(0,0,0,0)}),(function(e,t){e.setMonth(e.getMonth()+t)}),(function(e,t){return t.getMonth()-e.getMonth()+12*(t.getFullYear()-e.getFullYear())}),(function(e){return e.getMonth()})),q=_.range,P=r((function(e){e.setMonth(0,1),e.setHours(0,0,0,0)}),(function(e,t){e.setFullYear(e.getFullYear()+t)}),(function(e,t){return t.getFullYear()-e.getFullYear()}),(function(e){return e.getFullYear()}));P.every=function(e){return isFinite(e=Math.floor(e))&&e>0?r((function(t){t.setFullYear(Math.floor(t.getFullYear()/e)*e),t.setMonth(0,1),t.setHours(0,0,0,0)}),(function(t,n){t.setFullYear(t.getFullYear()+n*e)})):null};var A=P.range,B=r((function(e){e.setUTCSeconds(0,0)}),(function(e,t){e.setTime(+e+t*c)}),(function(e,t){return(t-e)/c}),(function(e){return e.getUTCMinutes()})),E=B.range,G=r((function(e){e.setUTCMinutes(0,0,0)}),(function(e,t){e.setTime(+e+t*s)}),(function(e,t){return(t-e)/s}),(function(e){return e.getUTCHours()})),J=G.range,K=r((function(e){e.setUTCHours(0,0,0,0)}),(function(e,t){e.setUTCDate(e.getUTCDate()+t)}),(function(e,t){return(t-e)/f}),(function(e){return e.getUTCDate()-1})),L=K.range;function N(e){return r((function(t){t.setUTCDate(t.getUTCDate()-(t.getUTCDay()+7-e)%7),t.setUTCHours(0,0,0,0)}),(function(e,t){e.setUTCDate(e.getUTCDate()+7*t)}),(function(e,t){return(t-e)/l}))}var Q=N(0),R=N(1),V=N(2),X=N(3),Z=N(4),$=N(5),ee=N(6),te=Q.range,ne=R.range,ue=V.range,re=X.range,ie=Z.range,oe=$.range,ae=ee.range,ce=r((function(e){e.setUTCDate(1),e.setUTCHours(0,0,0,0)}),(function(e,t){e.setUTCMonth(e.getUTCMonth()+t)}),(function(e,t){return t.getUTCMonth()-e.getUTCMonth()+12*(t.getUTCFullYear()-e.getUTCFullYear())}),(function(e){return e.getUTCMonth()})),se=ce.range,fe=r((function(e){e.setUTCMonth(0,1),e.setUTCHours(0,0,0,0)}),(function(e,t){e.setUTCFullYear(e.getUTCFullYear()+t)}),(function(e,t){return t.getUTCFullYear()-e.getUTCFullYear()}),(function(e){return e.getUTCFullYear()}));fe.every=function(e){return isFinite(e=Math.floor(e))&&e>0?r((function(t){t.setUTCFullYear(Math.floor(t.getUTCFullYear()/e)*e),t.setUTCMonth(0,1),t.setUTCHours(0,0,0,0)}),(function(t,n){t.setUTCFullYear(t.getUTCFullYear()+n*e)})):null};var le=fe.range;function ge(e,n,u,r,o,m){const M=[[d,1,a],[d,5,5e3],[d,15,15e3],[d,30,3e4],[m,1,c],[m,5,3e5],[m,15,9e5],[m,30,18e5],[o,1,s],[o,3,108e5],[o,6,216e5],[o,12,432e5],[r,1,f],[r,2,1728e5],[u,1,l],[n,1,g],[n,3,7776e6],[e,1,T]];function y(n,u,r){const o=Math.abs(u-n)/r,a=t.bisector((([,,e])=>e)).right(M,o);if(a===M.length)return e.every(t.tickStep(n/T,u/T,r));if(0===a)return i.every(Math.max(t.tickStep(n,u,r),1));const[c,s]=M[o/M[a-1][2]=12"
+ },
+ "exports": {
+ "umd": "./dist/d3-time.min.js",
+ "default": "./src/index.js"
+ },
+ "files": [
+ "dist/**/*.js",
+ "src/**/*.js"
+ ],
+ "homepage": "https://d3js.org/d3-time/",
+ "jsdelivr": "dist/d3-time.min.js",
+ "keywords": [
+ "d3",
+ "d3-module",
+ "time",
+ "interval",
+ "calendar"
+ ],
+ "license": "ISC",
+ "main": "src/index.js",
+ "module": "src/index.js",
+ "name": "d3-time",
+ "repository": {
+ "type": "git",
+ "url": "git+https://github.com/d3/d3-time.git"
+ },
+ "scripts": {
+ "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd -",
+ "prepublishOnly": "rm -rf dist && yarn test && rollup -c",
+ "test": "TZ=America/Los_Angeles mocha 'test/**/*-test.js' && eslint src test"
+ },
+ "sideEffects": false,
+ "type": "module",
+ "unpkg": "dist/d3-time.min.js",
+ "version": "3.0.0"
+}
diff --git a/node_modules/d3-time/src/day.js b/node_modules/d3-time/src/day.js
new file mode 100644
index 00000000..6c3f9ca2
--- /dev/null
+++ b/node_modules/d3-time/src/day.js
@@ -0,0 +1,12 @@
+import interval from "./interval.js";
+import {durationDay, durationMinute} from "./duration.js";
+
+var day = interval(
+ date => date.setHours(0, 0, 0, 0),
+ (date, step) => date.setDate(date.getDate() + step),
+ (start, end) => (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay,
+ date => date.getDate() - 1
+);
+
+export default day;
+export var days = day.range;
diff --git a/node_modules/d3-time/src/duration.js b/node_modules/d3-time/src/duration.js
new file mode 100644
index 00000000..341fa8fe
--- /dev/null
+++ b/node_modules/d3-time/src/duration.js
@@ -0,0 +1,7 @@
+export const durationSecond = 1000;
+export const durationMinute = durationSecond * 60;
+export const durationHour = durationMinute * 60;
+export const durationDay = durationHour * 24;
+export const durationWeek = durationDay * 7;
+export const durationMonth = durationDay * 30;
+export const durationYear = durationDay * 365;
diff --git a/node_modules/d3-time/src/hour.js b/node_modules/d3-time/src/hour.js
new file mode 100644
index 00000000..9b944d62
--- /dev/null
+++ b/node_modules/d3-time/src/hour.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationHour, durationMinute, durationSecond} from "./duration.js";
+
+var hour = interval(function(date) {
+ date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute);
+}, function(date, step) {
+ date.setTime(+date + step * durationHour);
+}, function(start, end) {
+ return (end - start) / durationHour;
+}, function(date) {
+ return date.getHours();
+});
+
+export default hour;
+export var hours = hour.range;
diff --git a/node_modules/d3-time/src/index.js b/node_modules/d3-time/src/index.js
new file mode 100644
index 00000000..c163d635
--- /dev/null
+++ b/node_modules/d3-time/src/index.js
@@ -0,0 +1,112 @@
+export {
+ default as timeInterval
+} from "./interval.js";
+
+export {
+ default as timeMillisecond,
+ milliseconds as timeMilliseconds,
+ default as utcMillisecond,
+ milliseconds as utcMilliseconds
+} from "./millisecond.js";
+
+export {
+ default as timeSecond,
+ seconds as timeSeconds,
+ default as utcSecond,
+ seconds as utcSeconds
+} from "./second.js";
+
+export {
+ default as timeMinute,
+ minutes as timeMinutes
+} from "./minute.js";
+
+export {
+ default as timeHour,
+ hours as timeHours
+} from "./hour.js";
+
+export {
+ default as timeDay,
+ days as timeDays
+} from "./day.js";
+
+export {
+ sunday as timeWeek,
+ sundays as timeWeeks,
+ sunday as timeSunday,
+ sundays as timeSundays,
+ monday as timeMonday,
+ mondays as timeMondays,
+ tuesday as timeTuesday,
+ tuesdays as timeTuesdays,
+ wednesday as timeWednesday,
+ wednesdays as timeWednesdays,
+ thursday as timeThursday,
+ thursdays as timeThursdays,
+ friday as timeFriday,
+ fridays as timeFridays,
+ saturday as timeSaturday,
+ saturdays as timeSaturdays
+} from "./week.js";
+
+export {
+ default as timeMonth,
+ months as timeMonths
+} from "./month.js";
+
+export {
+ default as timeYear,
+ years as timeYears
+} from "./year.js";
+
+export {
+ default as utcMinute,
+ utcMinutes as utcMinutes
+} from "./utcMinute.js";
+
+export {
+ default as utcHour,
+ utcHours as utcHours
+} from "./utcHour.js";
+
+export {
+ default as utcDay,
+ utcDays as utcDays
+} from "./utcDay.js";
+
+export {
+ utcSunday as utcWeek,
+ utcSundays as utcWeeks,
+ utcSunday as utcSunday,
+ utcSundays as utcSundays,
+ utcMonday as utcMonday,
+ utcMondays as utcMondays,
+ utcTuesday as utcTuesday,
+ utcTuesdays as utcTuesdays,
+ utcWednesday as utcWednesday,
+ utcWednesdays as utcWednesdays,
+ utcThursday as utcThursday,
+ utcThursdays as utcThursdays,
+ utcFriday as utcFriday,
+ utcFridays as utcFridays,
+ utcSaturday as utcSaturday,
+ utcSaturdays as utcSaturdays
+} from "./utcWeek.js";
+
+export {
+ default as utcMonth,
+ utcMonths as utcMonths
+} from "./utcMonth.js";
+
+export {
+ default as utcYear,
+ utcYears as utcYears
+} from "./utcYear.js";
+
+export {
+ utcTicks,
+ utcTickInterval,
+ timeTicks,
+ timeTickInterval
+} from "./ticks.js";
diff --git a/node_modules/d3-time/src/interval.js b/node_modules/d3-time/src/interval.js
new file mode 100644
index 00000000..2714a81d
--- /dev/null
+++ b/node_modules/d3-time/src/interval.js
@@ -0,0 +1,70 @@
+var t0 = new Date,
+ t1 = new Date;
+
+export default function newInterval(floori, offseti, count, field) {
+
+ function interval(date) {
+ return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date;
+ }
+
+ interval.floor = function(date) {
+ return floori(date = new Date(+date)), date;
+ };
+
+ interval.ceil = function(date) {
+ return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date;
+ };
+
+ interval.round = function(date) {
+ var d0 = interval(date),
+ d1 = interval.ceil(date);
+ return date - d0 < d1 - date ? d0 : d1;
+ };
+
+ interval.offset = function(date, step) {
+ return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date;
+ };
+
+ interval.range = function(start, stop, step) {
+ var range = [], previous;
+ start = interval.ceil(start);
+ step = step == null ? 1 : Math.floor(step);
+ if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date
+ do range.push(previous = new Date(+start)), offseti(start, step), floori(start);
+ while (previous < start && start < stop);
+ return range;
+ };
+
+ interval.filter = function(test) {
+ return newInterval(function(date) {
+ if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1);
+ }, function(date, step) {
+ if (date >= date) {
+ if (step < 0) while (++step <= 0) {
+ while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty
+ } else while (--step >= 0) {
+ while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty
+ }
+ }
+ });
+ };
+
+ if (count) {
+ interval.count = function(start, end) {
+ t0.setTime(+start), t1.setTime(+end);
+ floori(t0), floori(t1);
+ return Math.floor(count(t0, t1));
+ };
+
+ interval.every = function(step) {
+ step = Math.floor(step);
+ return !isFinite(step) || !(step > 0) ? null
+ : !(step > 1) ? interval
+ : interval.filter(field
+ ? function(d) { return field(d) % step === 0; }
+ : function(d) { return interval.count(0, d) % step === 0; });
+ };
+ }
+
+ return interval;
+}
diff --git a/node_modules/d3-time/src/millisecond.js b/node_modules/d3-time/src/millisecond.js
new file mode 100644
index 00000000..d89585c2
--- /dev/null
+++ b/node_modules/d3-time/src/millisecond.js
@@ -0,0 +1,26 @@
+import interval from "./interval.js";
+
+var millisecond = interval(function() {
+ // noop
+}, function(date, step) {
+ date.setTime(+date + step);
+}, function(start, end) {
+ return end - start;
+});
+
+// An optimized implementation for this simple case.
+millisecond.every = function(k) {
+ k = Math.floor(k);
+ if (!isFinite(k) || !(k > 0)) return null;
+ if (!(k > 1)) return millisecond;
+ return interval(function(date) {
+ date.setTime(Math.floor(date / k) * k);
+ }, function(date, step) {
+ date.setTime(+date + step * k);
+ }, function(start, end) {
+ return (end - start) / k;
+ });
+};
+
+export default millisecond;
+export var milliseconds = millisecond.range;
diff --git a/node_modules/d3-time/src/minute.js b/node_modules/d3-time/src/minute.js
new file mode 100644
index 00000000..2ed894bf
--- /dev/null
+++ b/node_modules/d3-time/src/minute.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationMinute, durationSecond} from "./duration.js";
+
+var minute = interval(function(date) {
+ date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond);
+}, function(date, step) {
+ date.setTime(+date + step * durationMinute);
+}, function(start, end) {
+ return (end - start) / durationMinute;
+}, function(date) {
+ return date.getMinutes();
+});
+
+export default minute;
+export var minutes = minute.range;
diff --git a/node_modules/d3-time/src/month.js b/node_modules/d3-time/src/month.js
new file mode 100644
index 00000000..ac995dec
--- /dev/null
+++ b/node_modules/d3-time/src/month.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+
+var month = interval(function(date) {
+ date.setDate(1);
+ date.setHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setMonth(date.getMonth() + step);
+}, function(start, end) {
+ return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12;
+}, function(date) {
+ return date.getMonth();
+});
+
+export default month;
+export var months = month.range;
diff --git a/node_modules/d3-time/src/second.js b/node_modules/d3-time/src/second.js
new file mode 100644
index 00000000..62069ef1
--- /dev/null
+++ b/node_modules/d3-time/src/second.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationSecond} from "./duration.js";
+
+var second = interval(function(date) {
+ date.setTime(date - date.getMilliseconds());
+}, function(date, step) {
+ date.setTime(+date + step * durationSecond);
+}, function(start, end) {
+ return (end - start) / durationSecond;
+}, function(date) {
+ return date.getUTCSeconds();
+});
+
+export default second;
+export var seconds = second.range;
diff --git a/node_modules/d3-time/src/ticks.js b/node_modules/d3-time/src/ticks.js
new file mode 100644
index 00000000..e2219365
--- /dev/null
+++ b/node_modules/d3-time/src/ticks.js
@@ -0,0 +1,64 @@
+import {bisector, tickStep} from "d3-array";
+import {durationDay, durationHour, durationMinute, durationMonth, durationSecond, durationWeek, durationYear} from "./duration.js";
+import millisecond from "./millisecond.js";
+import second from "./second.js";
+import minute from "./minute.js";
+import hour from "./hour.js";
+import day from "./day.js";
+import {sunday as week} from "./week.js";
+import month from "./month.js";
+import year from "./year.js";
+import utcMinute from "./utcMinute.js";
+import utcHour from "./utcHour.js";
+import utcDay from "./utcDay.js";
+import {utcSunday as utcWeek} from "./utcWeek.js";
+import utcMonth from "./utcMonth.js";
+import utcYear from "./utcYear.js";
+
+function ticker(year, month, week, day, hour, minute) {
+
+ const tickIntervals = [
+ [second, 1, durationSecond],
+ [second, 5, 5 * durationSecond],
+ [second, 15, 15 * durationSecond],
+ [second, 30, 30 * durationSecond],
+ [minute, 1, durationMinute],
+ [minute, 5, 5 * durationMinute],
+ [minute, 15, 15 * durationMinute],
+ [minute, 30, 30 * durationMinute],
+ [ hour, 1, durationHour ],
+ [ hour, 3, 3 * durationHour ],
+ [ hour, 6, 6 * durationHour ],
+ [ hour, 12, 12 * durationHour ],
+ [ day, 1, durationDay ],
+ [ day, 2, 2 * durationDay ],
+ [ week, 1, durationWeek ],
+ [ month, 1, durationMonth ],
+ [ month, 3, 3 * durationMonth ],
+ [ year, 1, durationYear ]
+ ];
+
+ function ticks(start, stop, count) {
+ const reverse = stop < start;
+ if (reverse) [start, stop] = [stop, start];
+ const interval = count && typeof count.range === "function" ? count : tickInterval(start, stop, count);
+ const ticks = interval ? interval.range(start, +stop + 1) : []; // inclusive stop
+ return reverse ? ticks.reverse() : ticks;
+ }
+
+ function tickInterval(start, stop, count) {
+ const target = Math.abs(stop - start) / count;
+ const i = bisector(([,, step]) => step).right(tickIntervals, target);
+ if (i === tickIntervals.length) return year.every(tickStep(start / durationYear, stop / durationYear, count));
+ if (i === 0) return millisecond.every(Math.max(tickStep(start, stop, count), 1));
+ const [t, step] = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i];
+ return t.every(step);
+ }
+
+ return [ticks, tickInterval];
+}
+
+const [utcTicks, utcTickInterval] = ticker(utcYear, utcMonth, utcWeek, utcDay, utcHour, utcMinute);
+const [timeTicks, timeTickInterval] = ticker(year, month, week, day, hour, minute);
+
+export {utcTicks, utcTickInterval, timeTicks, timeTickInterval};
diff --git a/node_modules/d3-time/src/utcDay.js b/node_modules/d3-time/src/utcDay.js
new file mode 100644
index 00000000..8023be15
--- /dev/null
+++ b/node_modules/d3-time/src/utcDay.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationDay} from "./duration.js";
+
+var utcDay = interval(function(date) {
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCDate(date.getUTCDate() + step);
+}, function(start, end) {
+ return (end - start) / durationDay;
+}, function(date) {
+ return date.getUTCDate() - 1;
+});
+
+export default utcDay;
+export var utcDays = utcDay.range;
diff --git a/node_modules/d3-time/src/utcHour.js b/node_modules/d3-time/src/utcHour.js
new file mode 100644
index 00000000..98b88222
--- /dev/null
+++ b/node_modules/d3-time/src/utcHour.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationHour} from "./duration.js";
+
+var utcHour = interval(function(date) {
+ date.setUTCMinutes(0, 0, 0);
+}, function(date, step) {
+ date.setTime(+date + step * durationHour);
+}, function(start, end) {
+ return (end - start) / durationHour;
+}, function(date) {
+ return date.getUTCHours();
+});
+
+export default utcHour;
+export var utcHours = utcHour.range;
diff --git a/node_modules/d3-time/src/utcMinute.js b/node_modules/d3-time/src/utcMinute.js
new file mode 100644
index 00000000..4e5e7e56
--- /dev/null
+++ b/node_modules/d3-time/src/utcMinute.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+import {durationMinute} from "./duration.js";
+
+var utcMinute = interval(function(date) {
+ date.setUTCSeconds(0, 0);
+}, function(date, step) {
+ date.setTime(+date + step * durationMinute);
+}, function(start, end) {
+ return (end - start) / durationMinute;
+}, function(date) {
+ return date.getUTCMinutes();
+});
+
+export default utcMinute;
+export var utcMinutes = utcMinute.range;
diff --git a/node_modules/d3-time/src/utcMonth.js b/node_modules/d3-time/src/utcMonth.js
new file mode 100644
index 00000000..3991b180
--- /dev/null
+++ b/node_modules/d3-time/src/utcMonth.js
@@ -0,0 +1,15 @@
+import interval from "./interval.js";
+
+var utcMonth = interval(function(date) {
+ date.setUTCDate(1);
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCMonth(date.getUTCMonth() + step);
+}, function(start, end) {
+ return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12;
+}, function(date) {
+ return date.getUTCMonth();
+});
+
+export default utcMonth;
+export var utcMonths = utcMonth.range;
diff --git a/node_modules/d3-time/src/utcWeek.js b/node_modules/d3-time/src/utcWeek.js
new file mode 100644
index 00000000..e36fac8b
--- /dev/null
+++ b/node_modules/d3-time/src/utcWeek.js
@@ -0,0 +1,29 @@
+import interval from "./interval.js";
+import {durationWeek} from "./duration.js";
+
+function utcWeekday(i) {
+ return interval(function(date) {
+ date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);
+ date.setUTCHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setUTCDate(date.getUTCDate() + step * 7);
+ }, function(start, end) {
+ return (end - start) / durationWeek;
+ });
+}
+
+export var utcSunday = utcWeekday(0);
+export var utcMonday = utcWeekday(1);
+export var utcTuesday = utcWeekday(2);
+export var utcWednesday = utcWeekday(3);
+export var utcThursday = utcWeekday(4);
+export var utcFriday = utcWeekday(5);
+export var utcSaturday = utcWeekday(6);
+
+export var utcSundays = utcSunday.range;
+export var utcMondays = utcMonday.range;
+export var utcTuesdays = utcTuesday.range;
+export var utcWednesdays = utcWednesday.range;
+export var utcThursdays = utcThursday.range;
+export var utcFridays = utcFriday.range;
+export var utcSaturdays = utcSaturday.range;
diff --git a/node_modules/d3-time/src/utcYear.js b/node_modules/d3-time/src/utcYear.js
new file mode 100644
index 00000000..ee897648
--- /dev/null
+++ b/node_modules/d3-time/src/utcYear.js
@@ -0,0 +1,26 @@
+import interval from "./interval.js";
+
+var utcYear = interval(function(date) {
+ date.setUTCMonth(0, 1);
+ date.setUTCHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setUTCFullYear(date.getUTCFullYear() + step);
+}, function(start, end) {
+ return end.getUTCFullYear() - start.getUTCFullYear();
+}, function(date) {
+ return date.getUTCFullYear();
+});
+
+// An optimized implementation for this simple case.
+utcYear.every = function(k) {
+ return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : interval(function(date) {
+ date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k);
+ date.setUTCMonth(0, 1);
+ date.setUTCHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setUTCFullYear(date.getUTCFullYear() + step * k);
+ });
+};
+
+export default utcYear;
+export var utcYears = utcYear.range;
diff --git a/node_modules/d3-time/src/week.js b/node_modules/d3-time/src/week.js
new file mode 100644
index 00000000..c0f1b030
--- /dev/null
+++ b/node_modules/d3-time/src/week.js
@@ -0,0 +1,29 @@
+import interval from "./interval.js";
+import {durationMinute, durationWeek} from "./duration.js";
+
+function weekday(i) {
+ return interval(function(date) {
+ date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);
+ date.setHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setDate(date.getDate() + step * 7);
+ }, function(start, end) {
+ return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;
+ });
+}
+
+export var sunday = weekday(0);
+export var monday = weekday(1);
+export var tuesday = weekday(2);
+export var wednesday = weekday(3);
+export var thursday = weekday(4);
+export var friday = weekday(5);
+export var saturday = weekday(6);
+
+export var sundays = sunday.range;
+export var mondays = monday.range;
+export var tuesdays = tuesday.range;
+export var wednesdays = wednesday.range;
+export var thursdays = thursday.range;
+export var fridays = friday.range;
+export var saturdays = saturday.range;
diff --git a/node_modules/d3-time/src/year.js b/node_modules/d3-time/src/year.js
new file mode 100644
index 00000000..a86872d7
--- /dev/null
+++ b/node_modules/d3-time/src/year.js
@@ -0,0 +1,26 @@
+import interval from "./interval.js";
+
+var year = interval(function(date) {
+ date.setMonth(0, 1);
+ date.setHours(0, 0, 0, 0);
+}, function(date, step) {
+ date.setFullYear(date.getFullYear() + step);
+}, function(start, end) {
+ return end.getFullYear() - start.getFullYear();
+}, function(date) {
+ return date.getFullYear();
+});
+
+// An optimized implementation for this simple case.
+year.every = function(k) {
+ return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : interval(function(date) {
+ date.setFullYear(Math.floor(date.getFullYear() / k) * k);
+ date.setMonth(0, 1);
+ date.setHours(0, 0, 0, 0);
+ }, function(date, step) {
+ date.setFullYear(date.getFullYear() + step * k);
+ });
+};
+
+export default year;
+export var years = year.range;
diff --git a/node_modules/d3-timer/LICENSE b/node_modules/d3-timer/LICENSE
new file mode 100644
index 00000000..b0145150
--- /dev/null
+++ b/node_modules/d3-timer/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2010-2021 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
diff --git a/node_modules/d3-timer/README.md b/node_modules/d3-timer/README.md
new file mode 100644
index 00000000..a78ce3e6
--- /dev/null
+++ b/node_modules/d3-timer/README.md
@@ -0,0 +1,87 @@
+# d3-timer
+
+This module provides an efficient queue capable of managing thousands of concurrent animations, while guaranteeing consistent, synchronized timing with concurrent or staged animations. Internally, it uses [requestAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame) for fluid animation (if available), switching to [setTimeout](https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout) for delays longer than 24ms.
+
+## Installing
+
+If you use npm, `npm install d3-timer`. You can also download the [latest release on GitHub](https://github.com/d3/d3-timer/releases/latest). For vanilla HTML in modern browsers, import d3-timer from Skypack:
+
+```html
+