var width = 960,
height = 500,
margin = 20;
var x = d3.scale.linear()
.range([0, width - 3 * margin]);
var y = d3.scale.linear()
.range([0, height - 2 * margin]);
var z = d3.scale.category10();
var n = d3.format(",d"),
p = d3.format("%");
var svg = d3.select("#chart").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + 2 * margin + "," + margin + ")");
pbi.dsv(function (error, 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("g")
.attr("class", "x")
.attr("transform", function (d) { return "translate(" + x(d) + "," + y(1) + ")"; });
xtick.append("line")
.attr("y2", 6)
.style("stroke", "#000");
xtick.append("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("g")
.attr("class", "y")
.attr("transform", function (d) { return "translate(0," + y(1 - d) + ")"; });
ytick.append("line")
.attr("x1", -6)
.style("stroke", "#000");
ytick.append("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("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("a")
.attr("class", "market")
.attr("xlink:title", function (d) { return d.market + " " + d.parent.key + ": " + n(d.value); })
.append("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) {
if(d.market == "Auburn, AL")
return 360;
else
return x(d.parent.sum / sum);
})
.style("fill", function (d) {
if(d.value == "1920")
return "#eeeeee";
else
return z(d.market);
});
});