2f:Tbfe,chart = { // Specify the dimensions of the chart. const width = 928; const height = 800; const format = d3.format(",.0f"); // Create a SVG container. const svg = d3.create("svg") .attr("width", width) .attr("height", height) .attr("viewBox", [0, 0, width, height]) .attr("style", "max-width: 100%; height: auto; font: 10px sans-serif;"); // Constructs and configures a Sankey generator. const sankey = d3.sankey() .nodeId(d => d.name) .nodeAlign(d3[nodeAlign]) // d3.sankeyLeft, etc. .nodeWidth(15) .nodePadding(10) .extent([[1, 5], [width - 1, height - 5]]); // Applies it to the data. We make a copy of the nodes and links objects // so as to avoid mutating the original. const {nodes, links} = sankey({ nodes: data.nodes.map(d => Object.assign({}, d)), links: data.links.map(d => Object.assign({}, d)) }); // Defines a color scale. const color = d3.scaleOrdinal(d3.schemeCategory10); // Creates the rects that represent the nodes. const rect = svg.append("g") .attr("stroke", "#000") .selectAll() .data(nodes) .join("rect") .attr("x", d => d.x0) .attr("y", d => d.y0) .attr("height", d => d.y1 - d.y0) .attr("width", d => d.x1 - d.x0) .attr("fill", d => color(d.category)); // Adds a title on the nodes. rect.append("title") .text(d => `${d.name}\n${format(d.value)} TWh`); // Creates the paths that represent the links. const link = svg.append("g") .attr("fill", "none") .attr("stroke-opacity", 0.5) .selectAll() .data(links) .join("g") .style("mix-blend-mode", "multiply"); // Creates a gradient, if necessary, for the source-target color option. if (linkColor === "source-target") { const gradient = link.append("linearGradient") .attr("id", d => (d.uid = DOM.uid("link")).id) .attr("gradientUnits", "userSpaceOnUse") .attr("x1", d => d.source.x1) .attr("x2", d => d.target.x0); gradient.append("stop") .attr("offset", "0%") .attr("stop-color", d => color(d.source.category)); gradient.append("stop") .attr("offset", "100%") .attr("stop-color", d => color(d.target.category)); } link.append("path") .attr("d", d3.sankeyLinkHorizontal()) .attr("stroke", linkColor === "source-target" ? (d) => d.uid : linkColor === "source" ? (d) => color(d.source.category) : linkColor === "target" ? (d) => color(d.target.category) : linkColor) .attr("stroke-width", d => Math.max(1, d.width)); link.append("title") .text(d => `${d.source.name} → ${d.target.name}\n${format(d.value)} TWh`); // Adds labels on the nodes. svg.append("g") .selectAll() .data(nodes) .join("text") .attr("x", d => d.x0 < width / 2 ? d.x1 + 6 : d.x0 - 6) .attr("y", d => (d.y1 + d.y0) / 2) .attr("dy", "0.35em") .attr("text-anchor", d => d.x0 < width / 2 ? "start" : "end") .text(d => d.name); return svg.node(); }30:[{"id":"b635eee651f975732ac6c878a1d17a9714c7ae62612934f46850501de69638c99d1a7d240aeb68b58a83ba0e1e2099d2e64a207f968e9cb64842c23f3805e44a","href":"https://static.observableusercontent.com/files/b635eee651f975732ac6c878a1d17a9714c7ae62612934f46850501de69638c99d1a7d240aeb68b58a83ba0e1e2099d2e64a207f968e9cb64842c23f3805e44a","name":"energy@1.csv","type":"text/csv","lastModified":1714770608981.27,"size":1538},{"id":"d1850caea1141548042365bdf40b484e863baf50e11954b0f8866ff5ea8a87f8dd1d411290675ba4c3d96442943a0135ed20f3b849711b3708f4fe87d3d029aa","href":"https://static.observableusercontent.com/files/d1850caea1141548042365bdf40b484e863baf50e11954b0f8866ff5ea8a87f8dd1d411290675ba4c3d96442943a0135ed20f3b849711b3708f4fe87d3d029aa","name":"projects.csv","type":"text/csv","lastModified":1714771296891.028,"size":5292},{"id":"9d30d0a8ff39a550de7a5c8a540259958bc255752a7476f38ab965dbd92a6584b320808cf6bcfa8af0e948f155decd02ad78b57fd9eff1cfb5e619e0a4dcf42c","href":"https://static.observableusercontent.com/files/9d30d0a8ff39a550de7a5c8a540259958bc255752a7476f38ab965dbd92a6584b320808cf6bcfa8af0e948f155decd02ad78b57fd9eff1cfb5e619e0a4dcf42c","name":"projects@1.csv","type":"text/csv","lastModified":1714771347731.765,"size":5472}] 2d:{"title":"AI Data Project Sankey diagram","cells":[{"id":0,"value":"

AI Data Project Sankey diagram

D3 › Gallery

\n\n# IIDS AI / DATA SCIENCE Projects Sankey Diagram\n\nThis [Sankey diagram](https://github.com/d3/d3-sankey) visualizes the potential project hierarchy.","pinned":false,"hidden":false,"mode":"md"},{"id":160,"value":"viewof linkColor = Inputs.select(new Map([\n [\"static\", \"#aaa\"],\n [\"source-target\", \"source-target\"],\n [\"source\", \"source\"],\n [\"target\", \"target\"],\n]), {\n value: new URLSearchParams(html``.search).get(\"color\") || \"source-target\",\n label: \"Link color\"\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":181,"value":"viewof nodeAlign = Inputs.select(new Map([[\"left\", \"sankeyLeft\"], [\"right\", \"sankeyRight\"], [\"center\", \"sankeyCenter\"], [\"justify\", \"sankeyJustify\"]]), {\n value: \"sankeyJustify\",\n label: \"Node alignment\"\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":11,"value":"$2f","pinned":true,"hidden":false,"mode":"ojs"},{"id":249,"value":"data = {\n const links = await FileAttachment(\"projects@1.csv\").csv({typed: true});\n const nodes = Array.from(new Set(links.flatMap(l => [l.source, l.target])), name => ({name, category: name.replace(/ .*/, \"\")}));\n return {nodes, links};\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":7,"value":"// [d3-sankey](https://github.com/d3/d3-sankey) is not part of the D3 bundle\nd3 = require(\"d3@7\", \"d3-sankey@0.12\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":351,"value":"energy1 = await FileAttachment(\"projects@1.csv\").csv({typed: \"auto\"})","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}