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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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<link href='http://fonts.googleapis.com/css?family=Playfair+Display' rel='stylesheet' type='text/css'> |
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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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<style> |
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.axis text { |
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font-family: 'Playfair Display', serif; |
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font-size: 24pt; |
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} |
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.axis .label { |
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font-size: 40pt; |
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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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.y.axis path, .y.axis line { |
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stroke: none; |
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} |
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.tooltip { |
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font-family: 'Playfair Display', serif; |
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font-size: 24pt; |
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/* This trick adds a heavy white shadow around the text. */ |
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text-shadow: |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white, |
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0px 0px 6px white; |
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/* This eliminates the possibility of flickering tooltips. */ |
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pointer-events: none; |
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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: 240, top: 0, right: 0, bottom: 101 }; |
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var barPadding = 0.2; |
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var barPaddingOuter = 0.1; |
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var xColumn = "population"; |
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var yColumn = "religion"; |
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var xAxisLabelText = "Population in 2010"; |
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var xAxisLabelOffset = 80; |
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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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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 xAxisLabel = xAxisG.append("text") |
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.style("text-anchor", "middle") |
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.attr("x", innerWidth / 2) |
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.attr("y", xAxisLabelOffset) |
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.attr("class", "label") |
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.text(xAxisLabelText); |
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var yAxisG = g.append("g") |
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.attr("class", "y axis"); |
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var tooltip = svg.append("text").attr("class", "tooltip"); |
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var xScale = d3.scale.linear().range([0, innerWidth]); |
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var yScale = d3.scale.ordinal().rangeRoundBands([0, innerHeight], barPadding, barPaddingOuter); |
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// Use D3's number format that generates SI prefixes for the X axis. |
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// See also http://en.wikipedia.org/wiki/Metric_prefix#List_of_SI_prefixes |
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var siFormat = d3.format("s"); |
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function tickFormat(num){ |
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// Replace the confusing G (for Giga) with |
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// the more recognizable B (for Billion). |
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return siFormat(num).replace("G", "B"); |
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} |
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var xAxis = d3.svg.axis().scale(xScale).orient("bottom") |
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.ticks(5) |
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.tickFormat(tickFormat) |
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.outerTickSize(0); |
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var yAxis = d3.svg.axis().scale(yScale).orient("left") |
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.outerTickSize(0); |
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var tooltipFormat = d3.format(","); |
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function showTooltip(d){ |
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tooltip.text(tooltipFormat(d[xColumn]) + " people") |
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.attr("x", d3.event.pageX + 20) |
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.attr("y", d3.event.pageY); |
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} |
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function hideTooltip(){ |
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tooltip.text(""); |
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} |
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function render(data){ |
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xScale.domain([0, d3.max(data, function (d){ return d[xColumn]; })]); |
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yScale.domain( data.map( function (d){ return d[yColumn]; })); |
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xAxisG.call(xAxis); |
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yAxisG.call(yAxis); |
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var bars = g.selectAll("rect").data(data); |
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bars.enter().append("rect") |
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.attr("height", yScale.rangeBand()) |
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.on("mouseover", showTooltip) |
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.on("mousemove", showTooltip) |
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.on("mouseout", hideTooltip); |
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bars |
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.attr("x", 0) |
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.attr("y", function (d){ return yScale(d[yColumn]); }) |
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.attr("width", function (d){ return xScale(d[xColumn]); }); |
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bars.exit().remove(); |
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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("religions2010.csv", type, render); |
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</script> |
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</body> |
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</html> |
