d3
Version:
A small, free JavaScript library for manipulating documents based on data.
117 lines (98 loc) • 3.23 kB
HTML
<html>
<head>
<title>Marimekko Chart</title>
<script type="text/javascript" src="../../d3.js"></script>
<script type="text/javascript" src="../../d3.layout.js"></script>
<style type="text/css">
body {
font: 10px sans-serif;
}
rect {
stroke: #000;
}
svg {
shape-rendering: crispEdges;
}
</style>
</head>
<body>
<script type="text/javascript">
var w = 960,
h = 500,
m = 20,
x = d3.scale.linear().range([0, w - 3 * m]),
y = d3.scale.linear().range([0, h - 2 * m]),
z = d3.scale.category10(),
n = d3.format(",d"),
p = d3.format("%");
var svg = d3.select("body").append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(" + 2 * m + "," + m + ")");
d3.json("marimekko.json", function(data) {
var offset = 0;
// Nest values by segment. We assume each segment+market is unique.
var segments = d3.nest()
.key(function(d) { return d.segment; })
.entries(data);
// Compute the total sum, the per-segment sum, and the per-market offset.
// You can use reduce rather than reduceRight to reverse the ordering.
// We also record a reference to the parent segment for each market.
var sum = segments.reduce(function(v, p) {
return (p.offset = v) + (p.sum = p.values.reduceRight(function(v, d) {
d.parent = p;
return (d.offset = v) + d.value;
}, 0));
}, 0);
// Add x-axis ticks.
var xtick = svg.selectAll(".x")
.data(x.ticks(10))
.enter().append("svg:g")
.attr("class", "x")
.attr("transform", function(d) { return "translate(" + x(d) + "," + y(1) + ")"; });
xtick.append("svg:line")
.attr("y2", 6)
.style("stroke", "#000");
xtick.append("svg:text")
.attr("y", 8)
.attr("text-anchor", "middle")
.attr("dy", ".71em")
.text(p);
// Add y-axis ticks.
var ytick = svg.selectAll(".y")
.data(y.ticks(10))
.enter().append("svg:g")
.attr("class", "y")
.attr("transform", function(d) { return "translate(0," + y(1 - d) + ")"; });
ytick.append("svg:line")
.attr("x1", -6)
.style("stroke", "#000");
ytick.append("svg:text")
.attr("x", -8)
.attr("text-anchor", "end")
.attr("dy", ".35em")
.text(p);
// Add a group for each segment.
var segments = svg.selectAll(".segment")
.data(segments)
.enter().append("svg:g")
.attr("class", "segment")
.attr("xlink:title", function(d) { return d.key; })
.attr("transform", function(d) { return "translate(" + x(d.offset / sum) + ")"; });
// Add a rect for each market.
var markets = segments.selectAll(".market")
.data(function(d) { return d.values; })
.enter().append("svg:a")
.attr("class", "market")
.attr("xlink:title", function(d) { return d.market + " " + d.parent.key + ": " + n(d.value); })
.append("svg:rect")
.attr("y", function(d) { return y(d.offset / d.parent.sum); })
.attr("height", function(d) { return y(d.value / d.parent.sum); })
.attr("width", function(d) { return x(d.parent.sum / sum); })
.style("fill", function(d) { return z(d.market); });
});
</script>
</body>
</html>