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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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body { |
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font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; |
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margin: auto; |
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position: relative; |
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width: 960px; |
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} |
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text { |
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font: 10px sans-serif; |
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} |
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.axis path, |
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.axis line { |
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fill: none; |
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stroke: #000; |
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shape-rendering: crispEdges; |
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} |
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form { |
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position: absolute; |
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right: 10px; |
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top: 10px; |
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} |
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</style> |
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<form> |
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<label><input type="radio" name="mode" value="percent"> Percent</label> |
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<label><input type="radio" name="mode" value="grouped"> Grouped</label> |
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<label><input type="radio" name="mode" value="stacked" checked> Stacked</label> |
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</form> |
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<script src="//d3js.org/d3.v4.min.js"></script> |
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<script> |
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var n = 4, // number of layers |
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m = 58, // number of samples per layer |
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stack = d3.stack(), |
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data = d3.range(n).map(function() { return bumpLayer(m, .1); }), |
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yOffset = {}, |
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yRecover = {}, |
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yRecoverDomain, |
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isTransitioning = true, |
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transitionDuration = 500; |
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var formatPercent = d3.format(".0%"); |
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var formatNumber = d3.format(","); |
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// transpose data |
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data = data[0].map(function(col, i) { |
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return data.map(function(row) { |
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return row[i] |
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}) |
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}); |
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var layers = stack.keys(d3.range(n))(data), |
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yStackMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d[1]; }); }), |
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yGroupMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d[1] - d[0]; }); }); |
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var margin = {top: 40, right: 10, bottom: 20, left: 35}, |
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width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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var x = d3.scaleBand() |
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.domain(d3.range(m)) |
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.rangeRound([0, width]) |
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.padding(0.1) |
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.align(0.1); |
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var y = d3.scaleLinear() |
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.domain([0, yStackMax]) |
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.rangeRound([height, 0]); |
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var color = d3.scaleLinear() |
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.domain([0, n - 1]) |
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.range(["#aad", "#556"]); |
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var xAxis = d3.axisBottom() |
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.scale(x) |
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.tickSize(0) |
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.tickPadding(6); |
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var yAxis = d3.axisLeft() |
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.scale(y) |
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.tickSize(2) |
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.tickPadding(6); |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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var layer = svg.selectAll(".layer") |
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.data(layers) |
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.enter().append("g") |
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.attr("class", "layer") |
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.attr("id", function(d) { return d.key; }) |
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.style("fill", function(d, i) { return color(i); }) |
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var rect = layer.selectAll("rect") |
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.data(function(d) { return d; }) |
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.enter().append("rect") |
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.attr("x", function(d, i) { return x(i); }) |
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.attr("y", height) |
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.attr("width", x.bandwidth()) |
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.attr("height", 0) |
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.on("mouseenter", highlightLayer) |
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.on("mouseout", restoreLayer); |
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rect.transition() |
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.delay(function(d, i) {return i * 10; }) |
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.attr("y", function(d) { return y(d[1]); }) |
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.attr("height", function(d) { return y(d[0]) - y(d[1]); }); |
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svg.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + height + ")") |
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.call(xAxis); |
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svg.append("g") |
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.attr("class", "y axis") |
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.attr("transform", "translate(" + 0 + ",0)") |
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.style("font-size", "10px") |
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.call(yAxis); |
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d3.selectAll("input").on("change", change); |
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// Automated initial transitions |
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var timeout = setTimeout(function() { |
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d3.select("input[value=\"grouped\"]").property("checked", true).each(change); |
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setTimeout(function() { |
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d3.select("input[value=\"percent\"]").property("checked", true).each(change); |
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}, 2000); |
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}, 2000); |
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function change() { |
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clearTimeout(timeout); |
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isTransitioning = true; |
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setTimeout(function() { |
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isTransitioning = false; |
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}, transitionDuration * 3.5); |
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if (this.value === "grouped") transitionGrouped(); |
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else if (this.value === "stacked") transitionStacked(); |
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else if (this.value === "percent") transitionPercent(); |
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} |
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function transitionGrouped() { |
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y.domain([0, yGroupMax]); |
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rect.transition() |
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.duration(transitionDuration) |
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.delay(function(d, i) { return i * 10; }) |
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.attr("x", function(d, i, j) { return x(i) + x.bandwidth() / n * parseInt(this.parentNode.id); }) |
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.attr("width", x.bandwidth() / n) |
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.transition() |
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.attr("y", function(d) { return height - (y(d[0]) - y(d[1])); }) |
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.attr("height", function(d) { return y(d[0]) - y(d[1]); }) |
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.on("end", setYRecover); |
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yAxis.tickFormat(formatNumber) |
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svg.selectAll(".y.axis").transition() |
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.delay(transitionDuration) |
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.duration(transitionDuration) |
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.call(yAxis) |
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} |
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function transitionStacked() { |
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y.domain([0, yStackMax]); |
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rect.transition() |
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.duration(transitionDuration) |
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.delay(function(d, i) { return i * 10; }) |
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.attr("y", function(d) { return y(d[1]); }) |
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.attr("height", function(d) { return y(d[0]) - y(d[1]); }) |
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.transition() |
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.attr("x", function(d, i) { return x(i); }) |
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.attr("width", x.bandwidth()) |
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.on("end", setYRecover); |
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yAxis.tickFormat(formatNumber) |
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svg.selectAll(".y.axis").transition() |
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.delay(transitionDuration) |
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.duration(transitionDuration) |
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.call(yAxis); |
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} |
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function transitionPercent() { |
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y.domain([0, 1]); |
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rect.transition() |
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.duration(transitionDuration) |
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.delay(function(d, i) { return i * 10; }) |
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.attr("y", function(d) { |
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var total = d3.sum(d3.values(d.data)); |
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return y(d[1] / total); }) |
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.attr("height", function(d) { |
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var total = d3.sum(d3.values(d.data)); |
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return y(d[0] / total) - y(d[1] / total); }) |
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.transition() |
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.attr("x", function(d, i) { return x(i); }) |
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.attr("width", x.bandwidth()) |
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.on("end", setYRecover); |
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yAxis.tickFormat(formatPercent) |
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svg.selectAll(".y.axis").transition() |
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.delay(transitionDuration) |
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.duration(transitionDuration) |
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.call(yAxis); |
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} |
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function setYRecover(d,i) { |
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j = parseInt(d3.select(this.parentNode).attr("id")) |
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if (typeof(yRecover[i]) === 'undefined'){ yRecover[i] = {}}; |
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yRecover[i][j] = parseFloat(d3.select(this).attr("y")); |
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yRecoverDomain = y.domain(); |
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} |
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function highlightLayer(d,i) { |
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if (isTransitioning == false) { |
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// Highlight layer |
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var j = parseInt(d3.select(this.parentNode).attr("id")) |
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layer.transition() |
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.style("opacity", function() { |
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return parseInt(this.id) == j? 1 : 0.2; |
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}); |
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// Align bottom of selected layer |
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var layerRects = d3.selectAll(this.parentNode.childNodes).selectAll(".rect")._parents; |
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var baseline = yRecover[i][j] + parseFloat(d3.select(this).attr("height")); |
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layerRects.forEach(function(d, i) { |
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yOffset[i] = baseline - (parseFloat(d3.select(d).attr("y")) + parseFloat(d3.select(d).attr("height"))); |
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}) |
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rect.transition() |
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.attr("y", function(d, i) { |
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return parseFloat(d3.select(this).attr("y")) + yOffset[i]; |
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}); |
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// Match y axis to bottom of layer |
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y.domain([y.domain()[0] - y.invert(baseline), y.domain()[1] - y.invert(baseline) ]) |
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svg.selectAll(".y.axis").transition() |
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.call(yAxis); |
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} |
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} |
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function restoreLayer(d,i) { |
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if (isTransitioning == false) { |
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// Restore layer opacity |
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layer.transition() |
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.style("opacity", 1) |
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// Restore bar Y values |
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rect.transition() |
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.attr("y", function(d, i) { |
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j = parseInt(d3.select(this.parentNode).attr("id")) |
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return yRecover[i][j]; |
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}) |
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// Restore y axis |
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y.domain(yRecoverDomain) |
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svg.selectAll(".y.axis").transition() |
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.call(yAxis); |
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} |
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} |
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// Inspired by Lee Byron's test data generator. |
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function bumpLayer(n, o) { |
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function bump(a) { |
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var x = 1 / (.1 + Math.random()), |
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y = 2 * Math.random() - .5, |
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z = 10 / (.1 + Math.random()); |
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for (var i = 0; i < n; i++) { |
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var w = (i / n - y) * z; |
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a[i] += x * Math.exp(-w * w); |
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} |
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} |
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var a = [], i; |
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for (i = 0; i < n; ++i) a[i] = o + o * Math.random(); |
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for (i = 0; i < 5; ++i) bump(a); |
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return a.map(function(d, i) { return Math.max(0, d); }); |
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} |
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</script> |
