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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta charset="utf-8"> |
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<title>D3 Example</title> |
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<script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> |
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<script src="//cdnjs.cloudflare.com/ajax/libs/d3-legend/1.1.0/d3-legend.js"></script> |
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<script src="//cdnjs.cloudflare.com/ajax/libs/d3-tip/0.6.3/d3-tip.min.js"></script> |
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<link href='https://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'> |
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<style> |
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.axis text { |
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font-family: 'Open Sans', sans-serif; |
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font-size: 19pt; |
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} |
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.axis .label { |
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font-size: 20pt; |
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} |
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.axis path, .axis line { |
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fill: none; |
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stroke: #000; |
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shape-rendering: crispEdges; |
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} |
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.color-legend text { |
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font-family: 'Open Sans', sans-serif; |
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font-size: 19pt; |
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} |
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.d3-tip { |
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font-family: 'Open Sans', sans-serif; |
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font-size: 19pt; |
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line-height: 1; |
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padding: 7px; |
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background: black; |
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color: lightgray; |
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border-radius: 20px; |
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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 outerWidth = 960; |
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var outerHeight = 500; |
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var margin = { left: 130, top: 44, right: 30, bottom: 47 }; |
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var barPadding = 0.2; |
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var xColumn = "year"; |
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var yColumn = "total"; |
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var colorColumn = "department"; |
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var layerColumn = colorColumn; |
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var hoveredColorValue; |
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var hoveredStrokeColor = "black"; |
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var innerWidth = outerWidth - margin.left - margin.right; |
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var innerHeight = outerHeight - margin.top - margin.bottom; |
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var svg = d3.select("body").append("svg") |
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.attr("width", outerWidth) |
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.attr("height", outerHeight); |
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var g = svg.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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// This is the layer where the bars are drawn. |
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var baseBarLayer = g.append("g"); |
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// This layer contains a semi-transparent overlay |
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// that fades out the base bars. |
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var overlayRect = g.append("g") |
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.append("rect") |
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.attr("width", innerWidth) |
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.attr("height", innerHeight) |
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.style("pointer-events", "none"); |
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// This contains the subset of bars rendered on top |
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// when you hover over the entries in the color legend. |
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var foregroundBarLayer = g.append("g"); |
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var xAxisG = g.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + innerHeight + ")"); |
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var yAxisG = g.append("g") |
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.attr("class", "y axis"); |
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var colorLegendG = g.append("g") |
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.attr("class", "color-legend") |
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.attr("transform", "translate(596, 0)"); |
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var xScale = d3.scale.ordinal().rangeBands([0, innerWidth], barPadding); |
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var yScale = d3.scale.linear().range([innerHeight, 0]); |
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var colorScale = d3.scale.category10(); |
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var tipNumberFormat = d3.format(","); |
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var tip = d3.tip() |
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.attr("class", "d3-tip") |
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.offset([-10, 0]) |
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.html(function(d) { |
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return [ |
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d[colorColumn], |
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" in ", |
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d[xColumn], |
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": ", |
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tipNumberFormat(d[yColumn]) |
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].join(""); |
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}); |
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g.call(tip); |
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// Use a modified SI formatter that uses "B" for Billion. |
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var siFormat = d3.format("s"); |
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var customTickFormat = function (d){ |
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return siFormat(d).replace("G", "B"); |
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}; |
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var xAxis = d3.svg.axis().scale(xScale).orient("bottom") |
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.outerTickSize(0); |
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var yAxis = d3.svg.axis().scale(yScale).orient("left") |
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.ticks(5) |
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.tickFormat(customTickFormat) |
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.outerTickSize(0); |
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var colorLegend = d3.legend.color() |
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.scale(colorScale) |
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.shapePadding(6.24) |
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.shapeWidth(25) |
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.shapeHeight(25) |
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.labelOffset(5); |
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function render(data){ |
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var nested = d3.nest() |
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.key(function (d){ return d[layerColumn]; }) |
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.entries(data); |
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var stack = d3.layout.stack() |
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.y(function (d){ return d[yColumn]; }) |
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.values(function (d){ return d.values; }); |
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var layers = stack(nested.reverse()).reverse(); |
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xScale.domain(layers[0].values.map(function (d){ |
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return d[xColumn]; |
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})); |
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yScale.domain([ |
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0, |
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d3.max(layers, function (layer){ |
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return d3.max(layer.values, function (d){ |
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return d.y0 + d.y; |
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}); |
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}) |
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]); |
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colorScale.domain(layers.map(function (layer){ |
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return layer.key; |
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})); |
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xAxisG.call(xAxis); |
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yAxisG.call(yAxis); |
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renderBars(baseBarLayer, layers); |
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if(hoveredColorValue){ |
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setOverlayTransparency(0.7); |
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renderBars(foregroundBarLayer, layers.filter(function (layer){ |
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return layer.key === hoveredColorValue; |
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})); |
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} else { |
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setOverlayTransparency(0.0); |
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renderBars(foregroundBarLayer, []); |
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} |
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colorLegendG.call(colorLegend); |
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// Move the text down a bit. |
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colorLegendG.selectAll("text").attr("y", 4); |
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listenForHover(colorLegendG.selectAll("rect"), data); |
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listenForHover(colorLegendG.selectAll("text"), data); |
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} |
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function setOverlayTransparency(alpha){ |
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overlayRect |
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.transition().duration(400) |
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.attr("fill", "rgba(255, 255, 255, " + alpha + ")"); |
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} |
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function renderBars(g, layers){ |
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var layerGs = g.selectAll(".layer").data(layers); |
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layerGs.enter().append("g").attr("class", "layer"); |
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layerGs.exit().remove(); |
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layerGs.style("fill", function (d){ |
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return colorScale(d.key); |
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}); |
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var bars = layerGs.selectAll("rect").data(function (d){ |
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return d.values; |
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}); |
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bars.enter().append("rect") |
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.on("mouseover", tip.show) |
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.on("mouseout", tip.hide); |
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bars.exit().remove(); |
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bars |
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.attr("x", function (d){ return xScale(d[xColumn]); }) |
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.attr("y", function (d){ return yScale(d.y0 + d.y); }) |
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.attr("width", xScale.rangeBand()) |
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.attr("height", function (d){ return innerHeight - yScale(d.y); }); |
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} |
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function listenForHover(selection, data){ |
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selection |
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.on("mouseover", function (d){ |
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hoveredColorValue = d; |
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render(data); |
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}) |
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.on("mouseout", function (d){ |
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hoveredColorValue = null; |
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render(data); |
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}) |
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.style("cursor", "pointer"); |
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} |
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function type(d){ |
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d.population = +d.population; |
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return d; |
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} |
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d3.csv("religionByCountryTop5.csv", type, render); |
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</script> |
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</body> |
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</html> |
