Created
September 3, 2017 19:50
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font-family: sans-serif; | |
| } | |
| .links line { | |
| stroke: #999; | |
| stroke-opacity: 0.6; | |
| } | |
| .nodes circle { | |
| stroke: #fff; | |
| stroke-width: 1.5px; | |
| } | |
| text { | |
| pointer-events: none; | |
| font-size: .5rem; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg width="960" height="600"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <!-- <form> | |
| <h3> Link threshold 0 <input type="range" id="thersholdSlider" name="points" value = 0 min="0" max="10" onchange="threshold(this.value)"> 10 </h3> | |
| </form> | |
| --> | |
| <script src="main.js"></script> | |
| </body> | |
| </html> |
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| const THRESHOLD = .4; | |
| const THRESHOLD_1 = .45; | |
| const THRESHOLD_2 = .5; | |
| // DATA | |
| var graph; | |
| // NODES | |
| var svg = d3.select("svg"); | |
| var width = +svg.attr("width"); | |
| var height = +svg.attr("height"); | |
| // SCALES | |
| var dashScale = d3.scaleQuantize().domain([THRESHOLD_1, THRESHOLD_2, 1]).range(["5,5","5,10","5,20"]); | |
| var opacityScale = d3.scaleLinear().range([0.1, 1]); | |
| var color = d3.scaleOrdinal(d3.schemeCategory20); | |
| var radiusScale = d3.scaleLog(); | |
| // PHYSICS | |
| var simulation = d3.forceSimulation() | |
| .force("link", d3.forceLink()) | |
| .force("charge", d3.forceManyBody().strength((d)=> -d.tweets)) | |
| .force("center", d3.forceCenter(width / 2, height / 2)); | |
| var link, node, text; | |
| // FUNCTIONS | |
| function onLoaded(error, data) { | |
| if (error) throw error; | |
| graph = data; | |
| radiusScale.domain(d3.extent(data.nodes, (d)=>d.tweets)).range([10,100]) | |
| opacityScale.domain(d3.extent(data.edges, (d)=>d.weight)) | |
| var linkData = graph.edges.filter((d)=> d.weight> THRESHOLD) | |
| link = svg.append("g") | |
| .attr("class", "links") | |
| .selectAll("line") | |
| .data(linkData) | |
| .enter() | |
| .append("line") | |
| .style("stroke-opacity", (d)=> (d.weight > THRESHOLD_1 ? 2 : 1)) | |
| .attr("stroke-width", (d)=> (d.weight > THRESHOLD_1 ? 2 : 1)) | |
| .attr("stroke-dasharray", (d)=> (d.weight <= THRESHOLD_1 ? dashScale(d.weight) : 0 )) | |
| node = svg.append("g") | |
| .attr("class", "nodes") | |
| .selectAll("circle") | |
| .data(graph.nodes) | |
| .enter() | |
| .append("circle") | |
| .attr("r", (d)=> (radiusScale(d.tweets))) | |
| .attr("fill", "red") | |
| .call(d3.drag() | |
| .on("start", dragstarted) | |
| .on("drag", dragged) | |
| .on("end", dragended)); | |
| text = svg | |
| .selectAll("text") | |
| .data(graph.nodes) | |
| .enter() | |
| .append("text") | |
| .text((d)=> d.name); | |
| simulation | |
| .nodes(graph.nodes) | |
| .on("tick", ticked); | |
| simulation.force("link") | |
| .links(linkData) | |
| .distance(function(d){return d.weight * 400}) | |
| .strength(1); | |
| } | |
| function ticked() { | |
| link | |
| .attr("x1", (d)=> d.source.x) | |
| .attr("y1", (d)=> d.source.y) | |
| .attr("x2", (d)=> d.target.x) | |
| .attr("y2", (d)=> d.target.y) | |
| node | |
| .attr("cx", (d)=> d.x) | |
| .attr("cy", (d)=> d.y) | |
| text | |
| .attr("x", (d)=>d.x) | |
| .attr("y", (d)=>d.y) | |
| } | |
| function dragstarted(d) { | |
| if (!d3.event.active) simulation.alphaTarget(0.3).restart(); | |
| d.fx = d.x; | |
| d.fy = d.y; | |
| } | |
| function dragged(d) { | |
| d.fx = d3.event.x; | |
| d.fy = d3.event.y; | |
| } | |
| function dragended(d) { | |
| if (!d3.event.active) simulation.alphaTarget(0); | |
| d.fx = null; | |
| d.fy = null; | |
| } | |
| // START | |
| d3.json("politicians_graph.json", onLoaded) | |
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| { | |
| "edges": [ | |
| { | |
| "source": 0, | |
| "target": 1, | |
| "weight": 0.4716256819304776 | |
| }, | |
| { | |
| "source": 0, | |
| "target": 2, | |
| "weight": 0.34253341531449183 | |
| }, | |
| { | |
| "source": 0, | |
| "target": 3, | |
| "weight": 0.5850021012364067 | |
| }, | |
| { | |
| "source": 0, | |
| "target": 4, | |
| "weight": 0.5167036278591745 | |
| }, | |
| { | |
| "source": 0, | |
| "target": 5, | |
| "weight": 0.35199505553715504 | |
| }, | |
| { | |
| "source": 1, | |
| "target": 2, | |
| "weight": 0.3730431400620412 | |
| }, | |
| { | |
| "source": 1, | |
| "target": 3, | |
| "weight": 0.5130490641708315 | |
| }, | |
| { | |
| "source": 1, | |
| "target": 4, | |
| "weight": 0.3745925800899256 | |
| }, | |
| { | |
| "source": 1, | |
| "target": 5, | |
| "weight": 0.35017147850622254 | |
| }, | |
| { | |
| "source": 2, | |
| "target": 3, | |
| "weight": 0.4123832526511902 | |
| }, | |
| { | |
| "source": 2, | |
| "target": 4, | |
| "weight": 0.31764094814496674 | |
| }, | |
| { | |
| "source": 2, | |
| "target": 5, | |
| "weight": 0.4385062602095448 | |
| }, | |
| { | |
| "source": 3, | |
| "target": 4, | |
| "weight": 0.4581154353395781 | |
| }, | |
| { | |
| "source": 3, | |
| "target": 5, | |
| "weight": 0.34931304656705653 | |
| }, | |
| { | |
| "source": 4, | |
| "target": 5, | |
| "weight": 0.3168755582230677 | |
| } | |
| ], | |
| "nodes": [ | |
| { | |
| "name": "@civati", | |
| "tweets": 6785 | |
| }, | |
| { | |
| "name": "@giorgiameloni", | |
| "tweets": 678 | |
| }, | |
| { | |
| "name": "@giulianopisapia", | |
| "tweets": 39 | |
| }, | |
| { | |
| "name": "@meb", | |
| "tweets": 255 | |
| }, | |
| { | |
| "name": "@nichivendola", | |
| "tweets": 153 | |
| }, | |
| { | |
| "name": "@pbersani", | |
| "tweets": 78 | |
| } | |
| ] | |
| } |
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