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| 1 | +var d3 = require('d3'); |
| 2 | +var _ = require('lodash'); |
| 3 | +var shared = require('./shared'); |
| 4 | +var tooltipHtml = require('./tooltip.jade'); |
| 5 | + |
| 6 | +require('../d3-tip')(d3); |
| 7 | + |
| 8 | +// var debug = require('debug')('scout:minicharts:coordinates'); |
| 9 | + |
| 10 | +var minicharts_d3fns_coordinates = function() { |
| 11 | + // --- beginning chart setup --- |
| 12 | + var width = 400; |
| 13 | + var height = 100; |
| 14 | + var options = { |
| 15 | + view: null |
| 16 | + }; |
| 17 | + var margin = shared.margin; |
| 18 | + margin.bottom = 20; |
| 19 | + |
| 20 | + var xScale = d3.scale.linear(); |
| 21 | + var yScale = d3.scale.linear(); |
| 22 | + |
| 23 | + var xAxis = d3.svg.axis() |
| 24 | + .ticks(10) |
| 25 | + .scale(xScale) |
| 26 | + .orient('bottom'); |
| 27 | + |
| 28 | + var yAxis = d3.svg.axis() |
| 29 | + .ticks(6) |
| 30 | + .scale(yScale) |
| 31 | + .orient('left'); |
| 32 | + |
| 33 | + var coordFormat = d3.format('.1f'); |
| 34 | + |
| 35 | + // set up tooltips |
| 36 | + var tip = d3.tip() |
| 37 | + .attr('class', 'd3-tip') |
| 38 | + .direction('n') |
| 39 | + .offset([-9, 0]); |
| 40 | + |
| 41 | + // --- end chart setup --- |
| 42 | + |
| 43 | + function chart(selection) { |
| 44 | + selection.each(function(data) { |
| 45 | + var el = d3.select(this); |
| 46 | + var innerWidth = width - margin.left - margin.right; |
| 47 | + var innerHeight = height - margin.top - margin.bottom; |
| 48 | + |
| 49 | + // setup tool tips |
| 50 | + tip.html(function(d) { |
| 51 | + return tooltipHtml({ |
| 52 | + label: 'lng: ' + coordFormat(d[0]) + ', lat: ' + coordFormat(d[1]) |
| 53 | + }); |
| 54 | + }); |
| 55 | + el.call(tip); |
| 56 | + |
| 57 | + xScale |
| 58 | + .domain([ |
| 59 | + d3.min(data, function(d) { return d[0]; }) - 3, |
| 60 | + d3.max(data, function(d) { return d[0]; }) + 3 |
| 61 | + ]) |
| 62 | + .range([0, innerWidth]); |
| 63 | + |
| 64 | + yScale |
| 65 | + .domain([ |
| 66 | + d3.min(data, function(d) { return d[1]; }) - 3, |
| 67 | + d3.max(data, function(d) { return d[1]; }) + 3 |
| 68 | + ]) |
| 69 | + .range([innerHeight, 0]); |
| 70 | + |
| 71 | + var g = el.selectAll('g').data([null]); |
| 72 | + |
| 73 | + // append g element if it doesn't exist yet |
| 74 | + g.enter() |
| 75 | + .append('g') |
| 76 | + .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')') |
| 77 | + .attr('width', innerWidth) |
| 78 | + .attr('height', innerHeight); |
| 79 | + |
| 80 | + var x = g.selectAll('.x.axis').data([null]); |
| 81 | + x.enter().append('g') |
| 82 | + .attr('class', 'x axis') |
| 83 | + .attr('transform', 'translate(0, ' + innerHeight + ')') |
| 84 | + .append('text') |
| 85 | + // .attr('class', 'label') |
| 86 | + .attr('x', innerWidth) |
| 87 | + .attr('y', -6) |
| 88 | + .style('text-anchor', 'end') |
| 89 | + .text('lng'); |
| 90 | + x.call(xAxis); |
| 91 | + |
| 92 | + var y = g.selectAll('.y.axis').data([null]); |
| 93 | + y.enter().append('g') |
| 94 | + .attr('class', 'y axis') |
| 95 | + .append('text') |
| 96 | + // .attr('class', 'label') |
| 97 | + .attr('transform', 'rotate(-90)') |
| 98 | + .attr('y', 6) |
| 99 | + .attr('dy', '.71em') |
| 100 | + .style('text-anchor', 'end') |
| 101 | + .text('lat'); |
| 102 | + y.call(yAxis); |
| 103 | + |
| 104 | + // select all g.bar elements |
| 105 | + var circle = g.selectAll('circle.circle') |
| 106 | + .data(data); |
| 107 | + |
| 108 | + circle |
| 109 | + .transition() // only apply transition to already existing elements |
| 110 | + .attr('cx', function(d) { |
| 111 | + return xScale(d[0]); |
| 112 | + }) |
| 113 | + .attr('cy', function(d) { |
| 114 | + return yScale(d[1]); |
| 115 | + }); |
| 116 | + |
| 117 | + circle.enter().append('circle') |
| 118 | + .attr('class', 'circle') |
| 119 | + .attr('cx', function(d) { |
| 120 | + return xScale(d[0]); |
| 121 | + }) |
| 122 | + .attr('cy', function(d) { |
| 123 | + return yScale(d[1]); |
| 124 | + }) |
| 125 | + .attr('r', 4.5) |
| 126 | + .on('mouseover', tip.show) |
| 127 | + .on('mouseout', tip.hide); |
| 128 | + |
| 129 | + circle.exit().remove(); |
| 130 | + }); |
| 131 | + } |
| 132 | + |
| 133 | + chart.width = function(value) { |
| 134 | + if (!arguments.length) { |
| 135 | + return width; |
| 136 | + } |
| 137 | + width = value; |
| 138 | + return chart; |
| 139 | + }; |
| 140 | + |
| 141 | + chart.height = function(value) { |
| 142 | + if (!arguments.length) { |
| 143 | + return height; |
| 144 | + } |
| 145 | + height = value; |
| 146 | + return chart; |
| 147 | + }; |
| 148 | + |
| 149 | + chart.options = function(value) { |
| 150 | + if (!arguments.length) { |
| 151 | + return options; |
| 152 | + } |
| 153 | + _.assign(options, value); |
| 154 | + return chart; |
| 155 | + }; |
| 156 | + |
| 157 | + return chart; |
| 158 | +}; |
| 159 | + |
| 160 | +module.exports = minicharts_d3fns_coordinates; |
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