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stacked-bar.html
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<!DOCTYPE html>
<head>
<meta charset="utf-8">
</head>
<body>
<h2 style="padding-left:60px;">Total Funding Rounds in CrunchBase by Quarter</h2>
<script src="lib/d3.js"></script>
<script>
var margin = {top: 20, right: 55, bottom: 30, left: 40},
width = 1000 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1);
var y = d3.scale.linear()
.rangeRound([height, 0]);
var color = d3.scale.ordinal()
.range(["#001c9c","#101b4d","#475003","#9c8305","#d3c47c"]);
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.csv("data/crunchbase-quarters.csv", function (error, data) {
var labelVar = 'quarter';
var varNames = d3.keys(data[0])
.filter(function (key) { return key !== labelVar;});
color.domain(varNames);
data.forEach(function (d) {
var y0 = 0;
d.mapping = varNames.map(function (name) {
return {
name: name,
label: d[labelVar],
y0: y0,
y1: y0 += +d[name]
};
});
d.total = d.mapping[d.mapping.length - 1].y1;
});
console.log("prepped data", data);
x.domain(data.map(function (d) { return d.quarter; }));
y.domain([0, d3.max(data, function (d) { return d.total; })]);
var selection = svg.selectAll(".series")
.data(data)
.enter().append("g")
.attr("class", "series")
.attr("transform", function (d) { return "translate(" + x(d.quarter) + ",0)"; });
selection.selectAll("rect")
.data(function (d) { return d.mapping; })
.enter().append("rect")
.attr("width", x.rangeBand())
.attr("y", function (d) { return y(d.y1); })
.attr("height", function (d) { return y(d.y0) - y(d.y1); })
.style("fill", function (d) { return color(d.name); })
.style("stroke", "grey");
});
</script>
</body>
</html>