2c:null 2d:["$","title",null,{"children":"Sankey Diagram - reusable and csv-friendly version | Jurian | Observable"}] 32:T7ec,sankeyCreator = data => { const svg = d3.select(DOM.svg(width, height)) .style("width", "100%") .style("height", "auto"); const {nodes, links} = sankey(data); svg.append("g") .attr("stroke", "#000") .selectAll("rect") .data(nodes) .join("rect") .attr("x", d => d.x0) .attr("y", d => d.y0) .attr("height", d => d.y1 - d.y0) .attr("width", d => d.x1 - d.x0) .attr("fill", d => color(d.name)) .append("title") .text(d => `${d.name}\n${format(d.value)}`); const link = svg.append("g") .attr("fill", "none") .attr("stroke-opacity", 0.5) .selectAll("g") .data(links) .join("g") .style("mix-blend-mode", "multiply"); if (edgeColor === "path") { const gradient = link.append("linearGradient") .attr("id", d => (d.uid = DOM.uid("link")).id) .attr("gradientUnits", "userSpaceOnUse") .attr("x1", d => d.source.x1) .attr("x2", d => d.target.x0); gradient.append("stop") .attr("offset", "0%") .attr("stop-color", d => color(d.source.name)); gradient.append("stop") .attr("offset", "100%") .attr("stop-color", d => color(d.target.name)); } link.append("path") .attr("d", d3.sankeyLinkHorizontal()) .attr("stroke", d => edgeColor === "none" ? "#aaa" : edgeColor === "path" ? d.uid : edgeColor === "input" ? color(d.source.name) : color(d.target.name)) .attr("stroke-width", d => Math.max(1, d.width)); link.append("title") .text(d => `${d.source.name} → ${d.target.name}\n${format(d.value)}`); svg.append("g") .style("font", "12px sans-serif") .selectAll("text") .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} - ${format(d.value)}`); return svg.node(); }33:[] 30:{"id":"000b6e05e0416bcb","slug":"sankey-diagram-reusable-and-csv-friendly-version","title":"Sankey Diagram - reusable and csv-friendly version","thumbnail":"dbb61e1b3dc3930d396d5261c87037069fd033220596a0f915242e59aaeaa78e","access_level":"public","create_time":"$D2019-03-29T14:56:31.924Z","update_time":"$D2021-09-19T13:05:20.981Z","view_time":null,"first_public_time":"$D2019-04-03T09:32:49.647Z","has_unpublished_edits":null,"fork":{"id":"99b2e903e7df3b0a","slug":"sankey-component","title":"Sankey diagram component","owner":{"id":"863951e3ebe4c0ae","login":"d3","name":"D3"}},"stars":4,"starred":false,"owner":{"type":"team","id":"adde9ced57f6607f","login":"jurb","name":"Jurian","avatar_url":"https://avatars-next.observableusercontent.com/352571cd5da6065dc4c4fce0bf21b6b150fef0cc85a4473883cd0142e44480a7","tier":"starter_2024"},"version":802,"publish_version":802,"role":null,"authored":false,"authors":[{"type":"individual","id":"556f67ab3442236a","login":"jurb","name":"Jurian","avatar_url":"https://avatars-next.observableusercontent.com/352571cd5da6065dc4c4fce0bf21b6b150fef0cc85a4473883cd0142e44480a7","tier":null}],"members":[{"type":"individual","id":"556f67ab3442236a","login":"jurb","name":"Jurian","avatar_url":"https://avatars-next.observableusercontent.com/352571cd5da6065dc4c4fce0bf21b6b150fef0cc85a4473883cd0142e44480a7","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":19,"collection":null,"type":"notebook","body":{"titling":"auto","title":"Sankey Diagram - reusable and csv-friendly version","cells":[{"id":0,"value":"md`# Sankey Diagram - reusable and csv-friendly version\n\nThis forked version adds a \\`sankeyCreator\\` function to easily create multiple sankeys, and adds a \\`convertData\\` function that uses [Ramda](https://ramdajs.com/) to convert a simple array of source/target/value objects to an object with nodes and links, that the \\`sankeyCreator\\` function understands. Also added a way to upload csv data.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":160,"value":"viewof edgeColor = Object.assign(html``, {\n value: new URLSearchParams(html``.search).get(\"color\") || \"path\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":181,"value":"viewof align = Object.assign(html``, {\n value: new URLSearchParams(html``.search).get(\"align\") || \"justify\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":338,"value":"md`\n# Example chart\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":343,"value":"chart = sankeyCreator(convertData(dataPastedParsed))","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":707,"value":"md`# Data\n\nThe \\`convertData\\` function uses [Ramda](https://ramdajs.com/) to convert an array of source/target/value objects to an object that the \\`sankeyCreator\\` function understands.\n\nThe chart above uses the \\`exampleData\\` object as input for the \\`convertData\\` function, and passes the resulting object to the chart. \n\nYou can upload a csv with source/target/value columns below, and replace the example data with the \\`csvData\\` object created below.\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":705,"value":"exampleData = [{source: \"Barry\", target: \"Elvis\", value: \"2\"},\n{source: \"Frodo\", target: \"Elvis\", value: \"2\"},\n{source: \"Frodo\", target: \"Sarah\", value: \"2\"},\n{source: \"Barry\", target: \"Alice\", value: \"2\"},\n{source: \"Elvis\", target: \"Sarah\", value: \"2\"},\n{source: \"Elvis\", target: \"Alice\", value: \"2\"},\n{source: \"Sarah\", target: \"Alice\", value: \"4\"}]","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":528,"value":"convertData = (data) => {\n const sources = R.pluck(\"source\")(data);\n const targets = R.pluck(\"target\")(data);\n const uniqs = R.uniq(R.concat(sources, targets));\n const nodes = R.map(R.objOf(\"name\"), uniqs);\n const nameToIndexEvolver = (el) => ({\n source: R.indexOf(el.source, uniqs),\n target: R.indexOf(el.target, uniqs),\n value: el.value\n });\n const links = R.map(nameToIndexEvolver, data);\n const graph = { nodes, links };\n return graph;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":744,"value":"convertData(exampleData)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":747,"value":"md`## Option to change data with source/target/value formatted csv`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":698,"value":"viewof f = html``","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":700,"value":"csvData = d3.csvParse(await Files.text(f))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":777,"value":"md`### Same but with copy-pasted tab seperated data from Google Sheets`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":779,"value":"pastedData = `source\ttarget\tvalue\nBarry\tElvis\t2\nFrodo\tElvis\t2\nFrodo\tSarah\t2\nBarry\tAlice\t2\nElvis\tSarah\t2\nElvis\tAlice\t2\nSarah\tAlice\t14`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":783,"value":"dataPastedParsed = d3.tsvParse(pastedData)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":715,"value":"md`# Sankey functions\nThe \\`sankeyCreator\\` takes a data object and draws the Sankey chart with that data. Change the \\`format\\`, \\`color\\`, \\`width\\` and \\`height\\` cells to fit your needs.`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":11,"value":"$32","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":22,"value":"sankey = {\n const sankey = d3.sankey()\n .nodeAlign(d3[`sankey${align[0].toUpperCase()}${align.slice(1)}`])\n .nodeWidth(15)\n .nodePadding(10)\n .extent([[1, 5], [width - 1, height - 5]])\n // .layout(0)\n return ({nodes, links}) => sankey({\n nodes: nodes.map(d => Object.assign({}, d)),\n links: links.map(d => Object.assign({}, d))\n });\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":13,"value":"format = {\n const f = d3.format(\",.0f\");\n return d => `${f(d)}`;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":16,"value":"color = {\n const color = d3.scaleOrdinal(d3.schemeCategory10);\n return name => color(name.replace(/ .*/, \"\"));\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":95,"value":"width = 1200","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":9,"value":"height = 600","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":726,"value":"md` # Library imports`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"d3 = require(\"d3@5\", \"d3-sankey@0.12\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":302,"value":"// Import Ramda\nR = require('//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js')","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":401,"value":"import {rasterize} from \"@mbostock/saving-svg\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W33","stdlib":"1"}} 31:"$30:body"