A demonstration of repurposing code from an Observable notebook without Observable’s reactive runtime.
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import {require} from "https://unpkg.com/d3-require@1?module"; | |
export default async function() { | |
const d3 = await require("d3@5"); | |
const width = 640; | |
const radius = width / 2; | |
const line = d3.radialLine() | |
.curve(d3.curveBundle.beta(0.85)) | |
.radius(d => d.y) | |
.angle(d => d.x); | |
const tree = d3.cluster().size([2 * Math.PI, radius - 100]); | |
const data = await loadData(); | |
const root = tree(d3.hierarchy(data)); | |
const map = new Map(root.leaves().map(d => [d.data.id, d])); | |
const svg = d3.create("svg") | |
.attr("width", width) | |
.attr("height", width) | |
.attr("viewBox", `${-width / 2} ${-width / 2} ${width} ${width - 40}`) | |
.style("max-width", "100%") | |
.style("height", "auto") | |
.style("display", "block") | |
.style("margin", "auto") | |
.style("font", "10px sans-serif"); | |
svg.append("g") | |
.attr("fill", "none") | |
.attr("stroke", "steelblue") | |
.attr("stroke-opacity", 0.5) | |
.selectAll("path") | |
.data(d3.merge(root.leaves().map(d => d.data.targets.map(i => d.path(map.get(i)))))) | |
.enter().append("path") | |
.style("mix-blend-mode", "multiply") | |
.attr("d", line); | |
svg.append("g") | |
.selectAll("text") | |
.data(root.leaves()) | |
.enter().append("text") | |
.attr("transform", d => ` | |
rotate(${d.x * 180 / Math.PI - 90}) | |
translate(${d.y},0)${d.x >= Math.PI ? ` | |
rotate(180)` : ""} | |
`) | |
.attr("dy", "0.31em") | |
.attr("x", d => d.x < Math.PI ? 3 : -3) | |
.attr("text-anchor", d => d.x < Math.PI ? "start" : "end") | |
.text(d => d.data.id); | |
return svg.node(); | |
} | |
async function loadData() { | |
const {nodes, links} = await require("@observablehq/miserables@0.0"); | |
const map = new Map; | |
for (const node of nodes) { | |
let group = map.get(node.group); | |
if (!group) map.set(node.group, group = {name: node.group, children: []}); | |
group.children.push(node); | |
node.targets = []; | |
} | |
for (const {source, target} of links) { | |
source.targets.push(target.id); | |
} | |
return {name: "miserables", children: [...map.values()]}; | |
} |
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<!DOCTYPE html> | |
<div id="chart"></div> | |
<script type="module"> | |
import chart from "./d3-hierarchical-edge-bundling-ii.js"; | |
chart().then(chart => document.querySelector("#chart").append(chart)); | |
</script> |
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