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Add support for negative color #8

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Add support for negative color #8

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1b0f9ec
fix minor bug in notebook general example in the part for accesing co…
VenkteshV Apr 18, 2020
2a6d4ee
Merge pull request #2 from VenkteshV/master
AndreasMadsen Jun 21, 2020
d05d76e
Add support for negative color
Willian-Zhang Jun 2, 2023
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103 changes: 69 additions & 34 deletions notebooks/general_example.ipynb
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48 changes: 47 additions & 1 deletion textualheatmap/web_assets/textual_heatmap.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,12 @@
;(function () {
'use strict';

/**
*
*
* @param {*} ratio: a number between 0 and 1
* @return {*} color in hex format
*/
function viridisSubset(ratio) {
const colormap = [
'#365d8d', '#355e8d', '#355f8d', '#34608d', '#34618d',
Expand Down Expand Up @@ -28,6 +34,46 @@
return colormap[Math.max(0, Math.min(n, Math.floor(ratio * n)))];
}

/**
*
*
* @param {*} ratio: a number between -1 and 0
* @return {*} color in hex format
*/
function viridisSubsetNeg(ratio) {
const colormap = [
"#440154", "#440256", "#450457", "#450559", "#46075a",
"#46085c", "#460a5d", "#460b5e", "#470d60", "#470e61",
"#471063", "#471164", "#471365", "#481467", "#481668",
"#481769", "#48186a", "#481a6c", "#481b6d", "#481c6e",
"#481d6f", "#481f70", "#482071", "#482173", "#482374",
"#482475", "#482576", "#482677", "#482878", "#482979",
"#472a7a", "#472c7a", "#472d7b", "#472e7c", "#472f7d",
"#46307e", "#46327e", "#46337f", "#463480", "#453581",
"#453781", "#453882", "#443983", "#443a83", "#443b84",
"#433d84", "#433e85", "#423f85", "#424086", "#424186",
"#414287", "#414487", "#404588", "#404688", "#3f4788",
"#3f4889", "#3e4989", "#3e4a89", "#3e4c8a", "#3d4d8a",
"#3d4e8a", "#3c4f8a", "#3c508b", "#3b518b", "#3b528b",
"#3a538b", "#3a548c", "#39558c", "#39568c", "#38588c",
"#38598c", "#375a8c", "#375b8d", "#365c8d", "#365d8d"];
const n = colormap.length - 1;
return colormap[Math.max(0, Math.min(n, Math.floor((ratio + 1) * n)))];
}

/**
*
* @param {*} ratio: a number between -1 and 1
* @return {*} color in hex format
*/
function color(ratio) {
if (ratio < 0) {
return viridisSubsetNeg(ratio);
} else {
return viridisSubset(ratio);
}
}

class TextualHeatmap {
constructor(settings) {
this.container = document.getElementById(settings.id);
Expand Down Expand Up @@ -117,7 +163,7 @@
this.highlightIndex = index;

for (let i = 0; i < this.heatIndexToNodeElement.length; i++) {
this.heatIndexToNodeElement[i].style.backgroundColor = viridisSubset(this.nonFormatData[index].heat[i]);
this.heatIndexToNodeElement[i].style.backgroundColor = color(this.nonFormatData[index].heat[i]);
this.heatIndexToNodeElement[i].classList.toggle('selected', i === index);
}

Expand Down