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@jwilber
Created September 3, 2019 05:09
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d3v5 pie
license: mit
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v5.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
</style>
</head>
<body>
<script>
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("body").append("svg")
.attr("width", 960)
.attr("height", 500)
svg.append("text")
.text("Edit the code below to change me!")
.attr("y", 200)
.attr("x", 120)
.attr("font-size", 36)
.attr("font-family", "monospace")
height = Math.min(width, 500)
arc = d3.arc()
.innerRadius(0)
.outerRadius(Math.min(width, height) / 2 - 1)
arcLabel = {
const radius = Math.min(width, height) / 2 * 0.8;
return d3.arc().innerRadius(radius).outerRadius(radius);
}
pie = d3.pie()
.sort(null)
.value(d => d.value)
const data = d3.csv("https://gist.githubusercontent.com/mbostock/a3541c73fdccd432acc8b11bf9f02641/raw/2bd0fce0bf34b020e93c5f6527b5a9d08c33ff06/population-by-age.csv", d3.autoType)
const color = d3.scaleOrdinal()
.domain(data.map(d => d.name))
.range(d3.quantize(t => d3.interpolateSpectral(t * 0.8 + 0.1), data.length).reverse())
const arcs = pie(data);
const svg = d3.create("svg")
.attr("viewBox", [-width / 2, -height / 2, width, height]);
svg.append("g")
.attr("stroke", "white")
.selectAll("path")
.data(arcs)
.join("path")
.attr("fill", d => color(d.data.name))
.attr("d", arc)
.append("title")
.text(d => `${d.data.name}: ${d.data.value.toLocaleString()}`);
svg.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 12)
.attr("text-anchor", "middle")
.selectAll("text")
.data(arcs)
.join("text")
.attr("transform", d => `translate(${arcLabel.centroid(d)})`)
.call(text => text.append("tspan")
.attr("y", "-0.4em")
.attr("font-weight", "bold")
.text(d => d.data.name))
.call(text => text.filter(d => (d.endAngle - d.startAngle) > 0.25).append("tspan")
.attr("x", 0)
.attr("y", "0.7em")
.attr("fill-opacity", 0.7)
.text(d => d.data.value.toLocaleString()));
</script>
</body>
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