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d3-force node move example
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| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src='https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js'></script> | |
| </head> | |
| <button id="clickMe" type="button">Move Nodes</button> | |
| <body> | |
| <svg id="svg" width="1200" height="500"></svg> | |
| <script> | |
| const width = 500 | |
| const height = 500 | |
| const svg = d3.select("svg") | |
| const trtCenter = width / 5 | |
| const cntrlCenter = width / 1.5 | |
| let sampleData = d3.range(24).map((d,i) => ({r: 40 - i * 0.5})) | |
| // define force | |
| let force = d3.forceSimulation() | |
| .force('charge', d3.forceManyBody().strength(1)) | |
| force.force('x', d3.forceX().strength(.3).x( width / 2)) | |
| force.force('y', d3.forceY().strength(.3).y(height / 3.5)) | |
| .force('collision', d3.forceCollide(d => 12)) | |
| .nodes(sampleData) | |
| .on('tick', changeNetwork) | |
| let dots = svg.selectAll('.dot') | |
| .data(sampleData) | |
| .enter() | |
| .append('g') | |
| .attr('class', 'dot') | |
| .attr('group', (d,i) => i % 2 == 0 ? 'trt' : 'ctrl') | |
| .append('circle') | |
| .attr('r', 10) | |
| .attr('fill', (d,i) => i % 2 == 0 ? 'pink' : 'olive') | |
| .attr('stroke', 'black') | |
| .attr('stroke-width', .4) | |
| function nodeTreatmentPos(d) { | |
| return d.index % 2 == 0 ? trtCenter : cntrlCenter; | |
| } | |
| function changeNetwork() { | |
| d3.selectAll('g.dot') | |
| .attr('transform', d=> `translate(${d.x}, ${d.y})`) | |
| } | |
| // | |
| function moveNodes() { | |
| force.force('center', null) | |
| .force('collision', d3.forceCollide(d => 12)) | |
| .alphaDecay(.08) | |
| force.force('x', d3.forceX().strength(1).x(nodeTreatmentPos)) | |
| force.force('y', d3.forceY().strength(1).y(height / 3.5)) | |
| force.alpha(.4).restart(); | |
| } | |
| // force for center | |
| function moveCenter() { | |
| force.force('center', null) | |
| .force('collision', d3.forceCollide(d => 12)) | |
| force.force('x', d3.forceX().strength(1.).x( width / 2)) | |
| force.force('y', d3.forceY().strength(1).y(height / 3.5)) | |
| force.alpha(.7).restart(); | |
| } | |
| // resolve locations of node on cliks | |
| let toCenter = true; | |
| d3.select('#clickMe') | |
| .on('click', function() { | |
| toCenter === true ? moveNodes() : moveCenter() | |
| toCenter = !toCenter | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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