This stacked bar chart is constructed from a CSV file storing the populations of different states by age group. The chart employs conventional margins and a number of D3 features:
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<meta charset="utf-8">
<style>
.bar {
fill: steelblue;
}
.axis path {
display: none;
}
</style>
<svg width="960" height="500"></svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
margin = {top: 20, right: 20, bottom: 30, left: 40},
width = +svg.attr("width") - margin.left - margin.right,
height = +svg.attr("height") - margin.top - margin.bottom,
g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var x = d3.scaleBand()
.rangeRound([0, width])
.padding(0.1)
.align(0.1);
var y = d3.scaleLinear()
.rangeRound([height, 0]);
var z = d3.scaleOrdinal()
.range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
var stack = d3.stack();
d3.csv("data.csv", type, function(error, data) {
if (error) throw error;
data.sort(function(a, b) { return b.total - a.total; });
x.domain(data.map(function(d) { return d.yeah; }));
y.domain([0, d3.max(data, function(d) { return d.total; })]).nice();
z.domain(data.columns.slice(1));
g.selectAll(".serie")
.data(stack.keys(data.columns.slice(1))(data))
.enter().append("g")
.attr("class", "serie")
.attr("fill", function(d) { return z(d.key); })
.selectAll("rect")
.data(function(d) { return d; })
.enter().append("rect")
.attr("x", function(d) { return x(d.data.year); })
.attr("y", function(d) { return y(d[1]); })
.attr("height", function(d) { return y(d[0]) - y(d[1]); })
.attr("width", x.bandwidth());
g.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
g.append("g")
.attr("class", "axis axis--y")
.call(d3.axisLeft(y).ticks(10, "s"))
.append("text")
.attr("x", 2)
.attr("y", y(y.ticks(10).pop()))
.attr("dy", "0.35em")
.attr("text-anchor", "start")
.attr("fill", "#000")
.text("Population");
var legend = g.selectAll(".legend")
.data(data.columns.slice(1).reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; })
.style("font", "10px sans-serif");
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.attr("fill", z);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.attr("text-anchor", "end")
.text(function(d) { return d; });
});
function type(d, i, columns) {
for (i = 1, t = 0; i < columns.length; ++i) t += d[columns[i]] = +d[columns[i]];
d.total = t;
return d;
}
</script>
https://d3js.org/d3.v4.min.js