index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
margin: auto;
position: relative;
width: 960px;
}
text {
font: 10px sans-serif;
}
.axis path {
display: none;
}
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.group-label {
font-weight: bold;
text-anchor: end;
}
form {
position: absolute;
right: 10px;
top: 10px;
}
</style>
<form>
<label><input type="radio" name="mode" value="multiples" checked> Multiples</label>
<label><input type="radio" name="mode" value="stacked"> Stacked</label>
</form>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var parseDate = d3.time.format("%Y-%m").parse,
formatYear = d3.format("02d"),
formatDate = function(d) { return "Q" + ((d.getMonth() / 3 | 0) + 1) + formatYear(d.getFullYear() % 100); };
var margin = {top: 10, right: 20, bottom: 20, left: 60},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var y0 = d3.scale.ordinal()
.rangeRoundBands([height, 0], .2);
var y1 = d3.scale.linear();
var x = d3.scale.ordinal()
.rangeRoundBands([0, width], .1, 0);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickFormat(formatDate);
var nest = d3.nest()
.key(function(d) { return d.group; });
var stack = d3.layout.stack()
.values(function(d) { return d.values; })
.x(function(d) { return d.date; })
.y(function(d) { return d.value; })
.out(function(d, y0) { d.valueOffset = y0; });
var color = d3.scale.category10();
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.tsv("data.tsv", function(error, data) {
data.forEach(function(d) {
d.date = parseDate(d.date);
d.value = +d.value;
});
var dataByGroup = nest.entries(data);
stack(dataByGroup);
x.domain(dataByGroup[0].values.map(function(d) { return d.date; }));
y0.domain(dataByGroup.map(function(d) { return d.key; }));
y1.domain([0, d3.max(data, function(d) { return d.value; })]).range([y0.rangeBand(), 0]);
var group = svg.selectAll(".group")
.data(dataByGroup)
.enter().append("g")
.attr("class", "group")
.attr("transform", function(d) { return "translate(0," + y0(d.key) + ")"; });
group.append("text")
.attr("class", "group-label")
.attr("x", -6)
.attr("y", function(d) { return y1(d.values[0].value / 2); })
.attr("dy", ".35em")
.text(function(d) { return "Group " + d.key; });
group.selectAll("rect")
.data(function(d) { return d.values; })
.enter().append("rect")
.style("fill", function(d) { return color(d.group); })
.attr("x", function(d) { return x(d.date); })
.attr("y", function(d) { return y1(d.value); })
.attr("width", x.rangeBand())
.attr("height", function(d) { return y0.rangeBand() - y1(d.value); });
group.filter(function(d, i) { return !i; }).append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + y0.rangeBand() + ")")
.call(xAxis);
d3.selectAll("input").on("change", change);
var timeout = setTimeout(function() {
d3.select("input[value=\"stacked\"]").property("checked", true).each(change);
}, 2000);
function change() {
clearTimeout(timeout);
if (this.value === "multiples") transitionMultiples();
else transitionStacked();
}
function transitionMultiples() {
var t = svg.transition().duration(750),
g = t.selectAll(".group").attr("transform", function(d) { return "translate(0," + y0(d.key) + ")"; });
g.selectAll("rect").attr("y", function(d) { return y1(d.value); });
g.select(".group-label").attr("y", function(d) { return y1(d.values[0].value / 2); })
}
function transitionStacked() {
var t = svg.transition().duration(750),
g = t.selectAll(".group").attr("transform", "translate(0," + y0(y0.domain()[0]) + ")");
g.selectAll("rect").attr("y", function(d) { return y1(d.value + d.valueOffset); });
g.select(".group-label").attr("y", function(d) { return y1(d.values[0].value / 2 + d.values[0].valueOffset); })
}
});
</script>