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forked from jwilber's block: force-directed distribution
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September 13, 2018 18:41
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force-directed distribution
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| license: mit |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="//unpkg.com/d3-party"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; background-color:black; } | |
| svg { background-color: black;} | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| const width = 1000 | |
| const height = 500 | |
| const svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append('g') | |
| .attr('transform', 'translate()') | |
| const party = d3.party(svg, {}); | |
| console.log(party) | |
| const colorScale = d3.scaleOrdinal() | |
| .range(['#FCFCFC', 'coral', '#FFFAE3', '#99E1D9', 'skyblue']) | |
| const radius = 7 | |
| const sampleData = d3.range(600).map(() => ({r: radius, | |
| value: width/2 + d3.randomNormal(0,2.8)() * 50})) | |
| // define force | |
| let force = d3.forceSimulation() | |
| //.force('charge', manyBody) | |
| //.force('center', center) | |
| .force('collision', d3.forceCollide(d => d.r+1).strength(1)) | |
| // .velocityDecay(.48) | |
| .force('x', d3.forceX(d => d.value).strength(3)) | |
| .force('y', d3.forceY(height - radius).strength(0.05)) | |
| // .alphaDecay(.5) | |
| // .alpha(1) | |
| .nodes(sampleData) | |
| .on('tick', changeNetwork) | |
| svg.selectAll('circle') | |
| .data(sampleData) | |
| .enter() | |
| .append('circle') | |
| .style('fill', (d,i) => colorScale(i)) | |
| .attr('r', d => d.r) | |
| .attr('stroke', 'white') | |
| .attr('stroke-width', .1) | |
| .call(party) | |
| function changeNetwork() { | |
| d3.selectAll('circle') | |
| .attr('cx', d => d.x) | |
| .attr('cy', d => d.y = Math.min(d.y, height - radius - 1)) | |
| } | |
| </script> | |
| </body> |
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