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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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body { |
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font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; |
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position: relative; |
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width: 960px; |
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} |
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.axis text { |
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font: 10px sans-serif; |
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} |
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.axis path, |
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.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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.bar { |
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fill: steelblue; |
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fill-opacity: .9; |
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} |
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.x.axis path { |
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display: none; |
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} |
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label { |
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position: absolute; |
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top: 10px; |
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right: 10px; |
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} |
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</style> |
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<label><input type="checkbox"> Sort values</label> |
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<script src="//d3js.org/d3.v3.min.js"></script> |
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<script> |
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var margin = {top: 20, right: 20, bottom: 30, left: 40}, |
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width = 960 - margin.left - margin.right, |
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height = 500 - margin.top - margin.bottom; |
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var formatPercent = d3.format(".0%"); |
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var x = d3.scale.ordinal() |
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.rangeRoundBands([0, width], 0.1, 1); |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.orient("bottom"); |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left") |
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.tickFormat(formatPercent); |
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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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d3.tsv("data.tsv", function(error, data) { |
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data.forEach(function(d) { |
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d.frequency = +d.frequency; |
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}); |
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x.domain(data.map(function(d) { return d.letter; })); |
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y.domain([0, d3.max(data, function(d) { return d.frequency; })]); |
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svg.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + height + ")") |
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.call(xAxis); |
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svg.append("g") |
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.attr("class", "y axis") |
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.call(yAxis) |
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.append("text") |
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.attr("transform", "rotate(-90)") |
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.attr("y", 6) |
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.attr("dy", ".71em") |
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.style("text-anchor", "end") |
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.text("Frequency"); |
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svg.selectAll(".bar") |
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.data(data) |
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.enter().append("rect") |
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.attr("class", "bar") |
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.attr("x", function(d) { return x(d.letter); }) |
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.attr("width", x.rangeBand()) |
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.attr("y", function(d) { return y(d.frequency); }) |
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.attr("height", function(d) { return height - y(d.frequency); }); |
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d3.select("input").on("change", change); |
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var sortTimeout = setTimeout(function() { |
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d3.select("input").property("checked", true).each(change); |
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}, 2000); |
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function change() { |
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clearTimeout(sortTimeout); |
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// Copy-on-write since tweens are evaluated after a delay. |
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var x0 = x.domain(data.sort(this.checked |
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? function(a, b) { return b.frequency - a.frequency; } |
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: function(a, b) { return d3.ascending(a.letter, b.letter); }) |
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.map(function(d) { return d.letter; })) |
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.copy(); |
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svg.selectAll(".bar") |
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.sort(function(a, b) { return x0(a.letter) - x0(b.letter); }); |
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var transition = svg.transition().duration(750), |
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delay = function(d, i) { return i * 50; }; |
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transition.selectAll(".bar") |
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.delay(delay) |
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.attr("x", function(d) { return x0(d.letter); }); |
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transition.select(".x.axis") |
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.call(xAxis) |
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.selectAll("g") |
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.delay(delay); |
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} |
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}); |
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</script> |
