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D3 v5 Zoomable Sunburst w/ require()
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license: mit |
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<title>D3 v5 Zoomable Sunburst w/ require()</title> | |
<script src="https://d3js.org/d3.v5.min.js"></script> | |
<script src="https://cdn.jsdelivr.net/npm/@observablehq/stdlib"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
</style> | |
</head> | |
<body> | |
Ported from <a href="https://beta.observablehq.com/@mbostock/d3-zoomable-sunburst">this Observable notebook</a> for <a href="https://talk.observablehq.com/t/notebook-to-vanilla-javascript-steps/1644/5">this</a> forum thread.<br> | |
<svg id="partitionSVG" width=960 height=960 viewBox="0 0 960 960"></svg> | |
<script> | |
const format = d3.format(",d"); | |
const width = 932; | |
const radius = width / 6; | |
const arc = d3.arc() | |
.startAngle(d => d.x0) | |
.endAngle(d => d.x1) | |
.padAngle(d => Math.min((d.x1 - d.x0) / 2, 0.005)) | |
.padRadius(radius * 1.5) | |
.innerRadius(d => d.y0 * radius) | |
.outerRadius(d => Math.max(d.y0 * radius, d.y1 * radius - 1)); | |
const partition = data => { | |
const root = d3.hierarchy(data) | |
.sum(d => d.size) | |
.sort((a, b) => b.value - a.value); | |
return d3.partition() | |
.size([2 * Math.PI, root.height + 1]) | |
(root); | |
} | |
const {require} = new observablehq.Library; | |
require()('@observablehq/flare').then(data => { | |
console.log(data); | |
const root = partition(data); | |
const color = d3.scaleOrdinal().range(d3.quantize(d3.interpolateRainbow, data.children.length + 1)); | |
root.each(d => d.current = d); | |
const svg = d3.select('#partitionSVG') | |
.style("width", "100%") | |
.style("height", "auto") | |
.style("font", "10px sans-serif"); | |
const g = svg.append("g") | |
.attr("transform", `translate(${width / 2},${width / 2})`); | |
const path = g.append("g") | |
.selectAll("path") | |
.data(root.descendants().slice(1)) | |
.join("path") | |
.attr("fill", d => { | |
while (d.depth > 1) | |
d = d.parent; | |
return color(d.data.name); | |
}) | |
.attr("fill-opacity", d => arcVisible(d.current) ? (d.children ? 0.6 : 0.4) : 0) | |
.attr("d", d => arc(d.current)); | |
path.filter(d => d.children) | |
.style("cursor", "pointer") | |
.on("click", clicked); | |
path.append("title") | |
.text(d => `${d.ancestors().map(d => d.data.name).reverse().join("/")}\n${format(d.value)}`); | |
const label = g.append("g") | |
.attr("pointer-events", "none") | |
.attr("text-anchor", "middle") | |
.style("user-select", "none") | |
.selectAll("text") | |
.data(root.descendants().slice(1)) | |
.join("text") | |
.attr("dy", "0.35em") | |
.attr("fill-opacity", d => +labelVisible(d.current)) | |
.attr("transform", d => labelTransform(d.current)) | |
.text(d => d.data.name); | |
const parent = g.append("circle") | |
.datum(root) | |
.attr("r", radius) | |
.attr("fill", "none") | |
.attr("pointer-events", "all") | |
.on("click", clicked); | |
function clicked(p) { | |
parent.datum(p.parent || root); | |
root.each(d => d.target = { | |
x0: Math.max(0, Math.min(1, (d.x0 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI, | |
x1: Math.max(0, Math.min(1, (d.x1 - p.x0) / (p.x1 - p.x0))) * 2 * Math.PI, | |
y0: Math.max(0, d.y0 - p.depth), | |
y1: Math.max(0, d.y1 - p.depth) | |
}); | |
const t = g.transition().duration(750); | |
// Transition the data on all arcs, even the ones that aren’t visible, | |
// so that if this transition is interrupted, entering arcs will start | |
// the next transition from the desired position. | |
path.transition(t) | |
.tween("data", d => { | |
const i = d3.interpolate(d.current, d.target); | |
return t => d.current = i(t); | |
}) | |
.filter(function (d) { | |
return +this.getAttribute("fill-opacity") || arcVisible(d.target); | |
}) | |
.attr("fill-opacity", d => arcVisible(d.target) ? (d.children ? 0.6 : 0.4) : 0) | |
.attrTween("d", d => () => arc(d.current)); | |
label.filter(function (d) { | |
return +this.getAttribute("fill-opacity") || labelVisible(d.target); | |
}).transition(t) | |
.attr("fill-opacity", d => +labelVisible(d.target)) | |
.attrTween("transform", d => () => labelTransform(d.current)); | |
} | |
function arcVisible(d) { | |
return d.y1 <= 3 && d.y0 >= 1 && d.x1 > d.x0; | |
} | |
function labelVisible(d) { | |
return d.y1 <= 3 && d.y0 >= 1 && (d.y1 - d.y0) * (d.x1 - d.x0) > 0.03; | |
} | |
function labelTransform(d) { | |
const x = (d.x0 + d.x1) / 2 * 180 / Math.PI; | |
const y = (d.y0 + d.y1) / 2 * radius; | |
return `rotate(${x - 90}) translate(${y},0) rotate(${x < 180 ? 0 : 180})`; | |
} | |
}); | |
</script> | |
</body> |
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