31:T5ea,chart = { const svg = d3.create("svg").style("background-color","#e4dedf") .attr("viewBox", [-width / 2, -height / 2, width, height]); const chords = chord(matrix); const textId = DOM.uid("text"); svg.append("path") .attr("id", textId.id) .attr("fill", "none") .attr("d", d3.arc()({outerRadius, startAngle: 0, endAngle: 2 * Math.PI})); svg.append("g") .attr("fill-opacity", 0.75) .selectAll("g") .data(chords) .join("path") .attr("d", ribbon) .attr("fill", d=>color(d.source.index)) .style("mix-blend-mode", "multiply") .append("title") .text(d => `${names[d.source.index]} owes ${names[d.target.index]} ${formatValue(d.source.value)}`); svg.append("g") .attr("font-family", "sans-serif") .attr("font-size", 10) .selectAll("g") .data(chords.groups) .join("g") .call(g => g.append("path") .attr("d", arc) .attr("fill", d=>color(d.index)) .attr("stroke", d=>color(d.index))) .call(g => g.append("text") .attr("dy", -3) .append("textPath") .attr("xlink:href", textId.href) .attr("startOffset", d => d.startAngle * outerRadius) .text(d => names[d.index])) .style("font-weight","bold") .style("font-size","1.3em") .call(g => g.append("title") .text(d => `${names[d.index]} owes ${formatValue(d3.sum(matrix[d.index]))} is owed ${formatValue(d3.sum(matrix, row => row[d.index]))}`)); return svg.node(); }32:[{"id":"cce2f9ece9b0f4a12959417cbca3853cbe26938f5f4a17515dbe14c77c1824d213d8fbdc4a8b4f0f9c39044218987bbb0e9002575a0c11fe0623faf5bcbd6f93","href":"https://static.observableusercontent.com/files/cce2f9ece9b0f4a12959417cbca3853cbe26938f5f4a17515dbe14c77c1824d213d8fbdc4a8b4f0f9c39044218987bbb0e9002575a0c11fe0623faf5bcbd6f93","name":"spaceTech.csv","type":"text/csv","lastModified":1618491886276.668,"size":669}] 2f:{"title":"Space Tech Companies and Venture Capitals.*","cells":[{"id":0,"value":"html`

Space Tech Companies and Venture Capitals.*

Week 3:Relationships. Day 14:Space.

#30daychartchallenge

`","pinned":false,"hidden":false,"mode":"ojs"},{"id":96,"value":"html`

*Not a comprehensive list of VC investments.
Data Credit:\nPitchBook and Individual VC portfolio information on their respective websites.

\n`","pinned":false,"hidden":false,"mode":"ojs"},{"id":6,"value":"$31","pinned":false,"hidden":false,"mode":"ojs"},{"id":55,"value":"color = d3.scaleOrdinal()\n .domain([\"Space Angels\",\"Hempisphere Ventures\",\"DCVC\", \"RRE Ventures\", \"Lux Capital\", \"Marcbell\", \"Founders Fund\"])\n .range([\"yellow\",\"black\",\"pink\",\"purple\",\"red\",\"orange\",\"cyan\",\"green\",\"rebeccapurple\"])","pinned":false,"hidden":false,"mode":"ojs"},{"id":27,"value":"ribbon = d3.ribbonArrow()\n .radius(innerRadius - 0.5)\n .padAngle(1 / innerRadius)","pinned":false,"hidden":false,"mode":"ojs"},{"id":29,"value":"arc = d3.arc()\n .innerRadius(innerRadius+2)\n .outerRadius(outerRadius)","pinned":false,"hidden":false,"mode":"ojs"},{"id":17,"value":"chord = d3.chordDirected()\n .padAngle(60 / innerRadius)\n .sortSubgroups(d3.descending)\n .sortChords(d3.descending)","pinned":false,"hidden":false,"mode":"ojs"},{"id":21,"value":"outerRadius = innerRadius + 6","pinned":false,"hidden":false,"mode":"ojs"},{"id":19,"value":"innerRadius = Math.min(width, height) * 0.5 - 100","pinned":false,"hidden":false,"mode":"ojs"},{"id":24,"value":"formatValue = x => `${x.toFixed(0)}B`","pinned":false,"hidden":false,"mode":"ojs"},{"id":15,"value":"matrix = {\n const index = new Map(names.map((name, i) => [name, i]));\n const matrix = Array.from(index, () => new Array(names.length).fill(0));\n for (const {source, target, value} of data) matrix[index.get(source)][index.get(target)]=value\n return matrix;\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":13,"value":"names = Array.from(new Set(data.flatMap(d => [d.source, d.target])))","pinned":false,"hidden":false,"mode":"ojs"},{"id":11,"value":"data = FileAttachment(\"spaceTech.csv\").csv({typed:true})","pinned":false,"hidden":false,"mode":"ojs"},{"id":7,"value":"height = 1000","pinned":false,"hidden":false,"mode":"ojs"},{"id":4,"value":"d3 = require('d3@6')","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W32","stdlib":"1","titling":"auto"}