ported from https://observablehq.com/@d3/circle-packing
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March 23, 2019 23:12
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circle packing [UNLISTED]
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license: mit |
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<!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> | |
<svg width=975 height=975 /> | |
<script> | |
(async function() { | |
const data = await d3.json("https://raw.githubusercontent.com/d3/d3-hierarchy/v1.1.8/test/data/flare.json"); | |
const color = d3.scaleSequential([8, 0], d3.interpolateMagma), | |
format = d3.format(",d"), | |
width = 975, | |
height = width; | |
const pack = data => d3.pack() | |
.size([width - 2, height - 2]) | |
.padding(3) | |
(d3.hierarchy(data) | |
.sum(d => d.value) | |
.sort((a, b) => b.value - a.value)) | |
function chart() { | |
const root = pack(data); | |
const svg = d3.select("svg") | |
.style("font", "10px sans-serif") | |
.style("width", "100%") | |
.style("height", "auto") | |
.attr("text-anchor", "middle"); | |
svg.append("filter") | |
.attr("id", "shadow") | |
.append("feDropShadow") | |
.attr("flood-opacity", 0.3) | |
.attr("dx", 0) | |
.attr("dy", 1); | |
const node = svg.selectAll("g") | |
.data(d3.nest().key(d => d.height).entries(root.descendants())) | |
.join("g") | |
.attr("filter", "url(#shadow)") | |
.selectAll("g") | |
.data(d => d.values) | |
.join("g") | |
.attr("transform", d => `translate(${d.x + 1},${d.y + 1})`); | |
node.append("circle") | |
.attr("r", d => d.r) | |
.attr("fill", d => color(d.height)); | |
const leaf = node.filter(d => !d.children); | |
leaf.select("circle") | |
.attr("id", (d,i) => (d.leafUid = "leaf"+i)); | |
leaf.append("clipPath") | |
.attr("id", (d,i) => (d.clipUid = "clip"+i)) | |
.append("use") | |
.attr("xlink:href", (d,i) => `#${d.leafUid}`); | |
leaf.append("text") | |
.attr("clip-path", (d,i) => `url(#${d.clipUid})`) | |
.selectAll("tspan") | |
.data(d => d.data.name.split(/(?=[A-Z][^A-Z])/g)) | |
.join("tspan") | |
.attr("x", 0) | |
.attr("y", (d, i, nodes) => `${i - nodes.length / 2 + 0.8}em`) | |
.text(d => d); | |
node.append("title") | |
.text(d => `${d.ancestors().map(d => d.data.name).reverse().join("/")}\n${format(d.value)}`); | |
return svg.node(); | |
} | |
chart() | |
})(); | |
</script> | |
</body> |
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