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<!DOCTYPE html> |
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<head> |
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<meta charset="utf-8"> |
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<script src="https://d3js.org/d3.v4.min.js"></script> |
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<script src="paygaps.js"></script> |
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<style> |
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body { margin: 0; position: fixed; top: 0; right: 0; bottom: 0; left: 0; } |
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.enclosing-circle { |
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fill-opacity: 0.1; |
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} |
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.uni-label { |
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font-family: monospace; |
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font-size: 12px; |
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} |
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.count-label { |
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pointer-events: none; |
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font-family: sans-serif; |
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font-weight: bold; |
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fill: white; |
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} |
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</style> |
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</head> |
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<body> |
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<script> |
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var margin = { top: 50, right: 50, bottom: 50, left: 50 }; |
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var width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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var colour = d3.scaleLinear() |
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.range(["cyan", "magenta"]); |
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var radius = 5; |
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var initPos = { x: 50, y: 50 }, |
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paddingX = 110, |
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paddingY = 150; |
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var rowLength = 8; |
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function sortBy(attribute, order) { |
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paygaps.sort(function(a, b) { |
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if(a[attribute] < b[attribute]) return -1 * order; |
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if(a[attribute] > b[attribute]) return 1 * order; |
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return 0; |
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}); |
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} |
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// calculate ratios |
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paygaps.map(function(d) { |
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d.ratio = Math.round(d.max / d.min); |
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return d; |
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}); |
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colour.domain(d3.extent(paygaps, function(d) { |
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return d.ratio; |
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})) |
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sortBy("ratio", -1); |
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paygaps.forEach(function(p, i) { |
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var dots = d3.range(p.ratio).map(function(d) { |
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return { |
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circleId: i, |
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id: d |
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} |
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}); |
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var simulation = d3.forceSimulation(dots) |
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.force("x", d3.forceX(initPos.x + paddingX * (i % rowLength)).strength(1)) |
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.force("y", d3.forceY(initPos.y + paddingY * (Math.floor(i / rowLength))).strength(1)) |
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.force("collide", d3.forceCollide(radius + 1).iterations(6)) |
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.stop(); |
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for (var x = 0; x < 120; ++x) simulation.tick(); |
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addCircles(dots, i); |
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}) |
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function addCircles(data, i) { |
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var circles = svg.append("g") |
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.attr("class", "circles") |
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.selectAll("g").data(data) |
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.enter().append("g") |
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.each(function(d) { |
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d.r = radius; |
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}) |
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.style("fill", function(d) { |
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return colour(paygaps[d.circleId].ratio); |
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}); |
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circles.append("circle") |
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.attr("r", radius) |
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.attr("cx", function(d) { |
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return d.x; |
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}) |
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.attr("cy", function(d) { |
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return d.y; |
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}); |
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var enclosingCircleAttr = d3.packEnclose(circles.data()); |
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var enclosingCircle = svg.append("g") |
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.append("circle") |
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.datum(enclosingCircleAttr) |
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.attr("class", "enclosing-circle") |
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.attr("r", function(d) { |
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return d.r + radius; |
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}) |
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.attr("cx", function(d) { |
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return d.x; |
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}) |
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.attr("cy", function(d) { |
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return d.y; |
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}) |
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.on("mouseover", function() { |
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count |
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.style("opacity", 1) |
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enclosingCircle |
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.style("fill-opacity", 0.5) |
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}) |
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.on("mouseout", function() { |
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count |
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.style("opacity", 0) |
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enclosingCircle |
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.style("fill-opacity", 0.1) |
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}) |
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var count = svg.append("g") |
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.append("text") |
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.attr("class", "count-label") |
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.datum(enclosingCircleAttr) |
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.attr("text-anchor", "middle") |
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.attr("x", function(d) { |
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return d.x; |
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}) |
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.attr("y", function(d) { |
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return d.y; |
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}) |
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.attr("dy", function(d) { |
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return (d.r / 2) - (d.r / 8); |
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}) |
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.text(paygaps[i].ratio + ":1") |
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.style("font-size", function(d) { |
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return Math.min(1.5 * d.r, (1.5 * d.r - 8) / this.getComputedTextLength() * 24) + "px"; |
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}) |
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.style("opacity", 0); |
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var label = svg.append("text") |
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.attr("class", "uni-label") |
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.attr("text-anchor", "middle") |
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.attr("x", enclosingCircleAttr.x) |
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.attr("y", enclosingCircleAttr.y + enclosingCircleAttr.r + 25) |
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.text(paygaps[i].name); |
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} |
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</script> |
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</body> |
