2c:null 2d:["$","title",null,{"children":"Sankey example for everviz | Jurian | Observable"}] 32:T7ec,sankeyCreator = data => { const svg = d3.select(DOM.svg(width, height)) .style("width", "100%") .style("height", "auto"); const {nodes, links} = sankey(data); svg.append("g") .attr("stroke", "#000") .selectAll("rect") .data(nodes) .join("rect") .attr("x", d => d.x0) .attr("y", d => d.y0) .attr("height", d => d.y1 - d.y0) .attr("width", d => d.x1 - d.x0) .attr("fill", d => color(d.name)) .append("title") .text(d => `${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} - ${format(d.value)}`); return svg.node(); }33:[] 30:{"id":"5e07d8f2a643691b","slug":"sankey-example-for-everviz","title":"Sankey example for everviz","thumbnail":"132d80f9eabb9b9ec2a957c13ab7398ec2d83391bbc58339a7c63e5161ebc5ba","access_level":"public","create_time":"$D2020-11-27T12:06:38.392Z","update_time":"$D2020-11-27T12:07:05.462Z","view_time":null,"first_public_time":"$D2020-11-27T12:07:15.903Z","has_unpublished_edits":null,"fork":{"id":"08142df6defd7dbc","slug":"boekman-musea-budget-en-werkgelenheid-2018","title":"Boekman - musea budget en werkgelenheid 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example for everviz","cells":[{"id":0,"value":"md`# Sankey example for everviz\n\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":805,"value":"sankeyCreator(\n convertData(\n d3.tsvParse(`source\ttarget\tvalue\nA1\tB1\t27\nA1\tB2\t9\nA2\tB2\t5\nA2\tB3\t11\nA3\tB2\t12\nA3\tB4\t7\nB1\tC1\t13\nB1\tC2\t10\nB4\tC2\t5\nB4\tC3\t2\nB1\tD1\t4\nC3\tD1\t1\nC3\tD2\t1`)\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":802,"value":"md`# Appendix`","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(exampleData))","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":792,"value":"JSON.stringify(convertData(exampleData))","pinned":true,"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 ({ \n source: R.indexOf(el.source, uniqs),\n target: R.indexOf(el.target, uniqs),\n value: el.value\n }) \n const links = R.map(el => nameToIndexEvolver(el), data)\n const graph = { nodes: nodes, links: 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\t4`","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.schemePastel2);\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"