Created
July 12, 2021 12:59
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d3 graph example taken from https://observablehq.com/@d3/mobile-patent-suits
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| <html> | |
| <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <div id="root"></div> | |
| <script type="module"> | |
| import * as d3 from "https://cdn.skypack.dev/d3"; | |
| const width = 600; | |
| const height = 600; | |
| const links = [ | |
| { source: "Microsoft", target: "Amazon", type: "licensing" }, | |
| { source: "Microsoft", target: "HTC", type: "licensing" }, | |
| { source: "Samsung", target: "Apple", type: "suit" }, | |
| { source: "Motorola", target: "Apple", type: "suit" }, | |
| { source: "Nokia", target: "Apple", type: "resolved" }, | |
| { source: "HTC", target: "Apple", type: "suit" }, | |
| { source: "Kodak", target: "Apple", type: "suit" }, | |
| { source: "Microsoft", target: "Barnes & Noble", type: "suit" }, | |
| { source: "Microsoft", target: "Foxconn", type: "suit" }, | |
| { source: "Oracle", target: "Google", type: "suit" }, | |
| { source: "Apple", target: "HTC", type: "suit" }, | |
| { source: "Microsoft", target: "Inventec", type: "suit" }, | |
| { source: "Samsung", target: "Kodak", type: "resolved" }, | |
| { source: "LG", target: "Kodak", type: "resolved" }, | |
| { source: "RIM", target: "Kodak", type: "suit" }, | |
| { source: "Sony", target: "LG", type: "suit" }, | |
| { source: "Kodak", target: "LG", type: "resolved" }, | |
| { source: "Apple", target: "Nokia", type: "resolved" }, | |
| { source: "Qualcomm", target: "Nokia", type: "resolved" }, | |
| { source: "Apple", target: "Motorola", type: "suit" }, | |
| { source: "Microsoft", target: "Motorola", type: "suit" }, | |
| { source: "Motorola", target: "Microsoft", type: "suit" }, | |
| { source: "Huawei", target: "ZTE", type: "suit" }, | |
| { source: "Ericsson", target: "ZTE", type: "suit" }, | |
| { source: "Kodak", target: "Samsung", type: "resolved" }, | |
| { source: "Apple", target: "Samsung", type: "suit" }, | |
| { source: "Kodak", target: "RIM", type: "suit" }, | |
| { source: "Nokia", target: "Qualcomm", type: "suit" }, | |
| ]; | |
| const types = Array.from(new Set(links.map((d) => d.type))); | |
| const data = { | |
| nodes: Array.from( | |
| new Set(links.flatMap((l) => [l.source, l.target])), | |
| (id) => ({ id }) | |
| ), | |
| links, | |
| }; | |
| const color = d3.scaleOrdinal(types, d3.schemeCategory10); | |
| const chart = () => { | |
| const links = data.links.map((d) => Object.create(d)); | |
| const nodes = data.nodes.map((d) => Object.create(d)); | |
| const simulation = d3 | |
| .forceSimulation(nodes) | |
| .force( | |
| "link", | |
| d3.forceLink(links).id((d) => d.id) | |
| ) | |
| .force("charge", d3.forceManyBody().strength(-400)) | |
| .force("x", d3.forceX()) | |
| .force("y", d3.forceY()); | |
| const svg = d3 | |
| .create("svg") | |
| .attr("viewBox", [-width / 2, -height / 2, width, height]) | |
| .style("font", "12px sans-serif"); | |
| // Per-type markers, as they don't inherit styles. | |
| svg | |
| .append("defs") | |
| .selectAll("marker") | |
| .data(types) | |
| .join("marker") | |
| .attr("id", (d) => `arrow-${d}`) | |
| .attr("viewBox", "0 -5 10 10") | |
| .attr("refX", 15) | |
| .attr("refY", -0.5) | |
| .attr("markerWidth", 6) | |
| .attr("markerHeight", 6) | |
| .attr("orient", "auto") | |
| .append("path") | |
| .attr("fill", color) | |
| .attr("d", "M0,-5L10,0L0,5"); | |
| const link = svg | |
| .append("g") | |
| .attr("fill", "none") | |
| .attr("stroke-width", 1.5) | |
| .selectAll("path") | |
| .data(links) | |
| .join("path") | |
| .attr("stroke", (d) => color(d.type)) | |
| .attr( | |
| "marker-end", | |
| (d) => `url(${new URL(`#arrow-${d.type}`, location)})` | |
| ); | |
| const node = svg | |
| .append("g") | |
| .attr("fill", "currentColor") | |
| .attr("stroke-linecap", "round") | |
| .attr("stroke-linejoin", "round") | |
| .selectAll("g") | |
| .data(nodes) | |
| .join("g") | |
| .call(drag(simulation)); | |
| node | |
| .append("circle") | |
| .attr("stroke", "white") | |
| .attr("stroke-width", 1.5) | |
| .attr("r", 4); | |
| node | |
| .append("text") | |
| .attr("x", 8) | |
| .attr("y", "0.31em") | |
| .text((d) => d.id) | |
| .clone(true) | |
| .lower() | |
| .attr("fill", "none") | |
| .attr("stroke", "white") | |
| .attr("stroke-width", 3); | |
| simulation.on("tick", () => { | |
| link.attr("d", linkArc); | |
| node.attr("transform", (d) => `translate(${d.x},${d.y})`); | |
| }); | |
| return svg.node(); | |
| }; | |
| function linkArc(d) { | |
| const r = Math.hypot(d.target.x - d.source.x, d.target.y - d.source.y); | |
| return ` | |
| M${d.source.x},${d.source.y} | |
| A${r},${r} 0 0,1 ${d.target.x},${d.target.y} | |
| `; | |
| } | |
| const drag = (simulation) => { | |
| function dragstarted(event, d) { | |
| if (!event.active) simulation.alphaTarget(0.3).restart(); | |
| d.fx = d.x; | |
| d.fy = d.y; | |
| } | |
| function dragged(event, d) { | |
| d.fx = event.x; | |
| d.fy = event.y; | |
| } | |
| function dragended(event, d) { | |
| if (!event.active) simulation.alphaTarget(0); | |
| d.fx = null; | |
| d.fy = null; | |
| } | |
| return d3 | |
| .drag() | |
| .on("start", dragstarted) | |
| .on("drag", dragged) | |
| .on("end", dragended); | |
| }; | |
| document.body.appendChild(chart()); | |
| </script> | |
| </html> |
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