2f:Tbfe,chart = { // Specify the dimensions of the chart. const width = 928; const height = 600; 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":"d6774e9422bd72369f195a30d3a6b33ff9d41676cff4d89c93511e1a458efb3cfd16cbb7ce3fecdd8dd2466121e10c9bfe57fd73c7520bf358d352a92b898614","href":"https://static.observableusercontent.com/files/d6774e9422bd72369f195a30d3a6b33ff9d41676cff4d89c93511e1a458efb3cfd16cbb7ce3fecdd8dd2466121e10c9bfe57fd73c7520bf358d352a92b898614","name":"energy.csv","type":"text/csv","lastModified":1692730295319.961,"size":2267},{"id":"c1fc2a9c45de146965ddff3ab7668c671497ac54c04321fc46fc9ec66e436464854a09af487ac1da2e4983961e55cc6d00b4901c3e454d666f57165759cb9039","href":"https://static.observableusercontent.com/files/c1fc2a9c45de146965ddff3ab7668c671497ac54c04321fc46fc9ec66e436464854a09af487ac1da2e4983961e55cc6d00b4901c3e454d666f57165759cb9039","name":"stackOverflowGraph.json","type":"application/json","lastModified":1692730319572.511,"size":14404},{"id":"706c447a2ef09a3a608a108c0e5852bbeda4feb6b583117b784110d78981e4025977a21fa2d671d3a08b215031e720d6c7ce758a170520501d3221274ef3fbc9","href":"https://static.observableusercontent.com/files/706c447a2ef09a3a608a108c0e5852bbeda4feb6b583117b784110d78981e4025977a21fa2d671d3a08b215031e720d6c7ce758a170520501d3221274ef3fbc9","name":"stackOverflow.json","type":"application/json","lastModified":1692730371714.48,"size":6896}] 2d:{"title":"Sankey diagram","cells":[{"id":0,"value":"

Sankey diagram

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