mbostock/README.md

## README.md

      
        

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              README.md
            
          
        
      
      
    A demonstration of repurposing code from an Observable notebook without Observable’s reactive runtime.

  

  

## d3-hierarchical-edge-bundling-ii.js
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()]};
}

## index.html
<!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>
	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()]};
	}
	<!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>