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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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.bar { |
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stop-color: steelblue; |
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} |
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.bar.hovered { |
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stop-color: brown; |
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} |
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.empty { |
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stop-opacity: 0; |
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} |
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.y.axis path { |
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display: none; |
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} |
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</style> |
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<body> |
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<script src="//d3js.org/d3.v4.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 y = d3.scaleBand() |
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.range([0, height]) |
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.paddingInner(0.1); |
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var x = d3.scaleLinear() |
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.range([0, width]); |
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var p = d3.scaleLinear() |
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.range([0, 100]); |
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var yAxis = d3.axisLeft() |
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.scale(y) |
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; |
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var xAxis = d3.axisBottom() |
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.scale(x) |
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.ticks(10, "%"); |
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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 defs = d3.select("body svg").append("defs"); |
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d3.tsv("data.tsv", type, function(error, data) { |
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if (error) throw error; |
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y.domain(data.map(function(d) { return d.letter; })); |
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x.domain([0, d3.max(data, function(d) { return d.frequency; })]); |
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p.domain(x.domain()); |
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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("y", function(d) { return y(d.letter); }) |
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.attr("height", y.bandwidth()) |
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.attr("x", 0) |
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.attr("width", width) |
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.style("fill", function(d, i) { return "url(#gradient_" + i + ")"; }) |
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.on("mouseover", function(d, i) { |
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defs.select("#gradient_" + i).selectAll(".bar") |
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.classed("hovered", true) |
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}) |
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.on("mouseout", function(d, i) { |
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defs.select("#gradient_" + i).selectAll(".bar") |
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.classed("hovered", false) |
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}) |
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; |
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defs.selectAll("linearGradient") |
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.data(data) |
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.enter().append("linearGradient") |
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.attr("id", function(d, i) { return "gradient_" + i; }) |
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.attr("x1", 0) |
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.attr("x2", 1) |
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.attr("y1", 0) |
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.attr("y2", 0) |
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.each(function(d) { |
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var self = d3.select(this); |
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var stops = ["bar start", "bar end", "empty end"]; |
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self.selectAll("stop") |
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.data(stops) |
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.enter().append("stop") |
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.attr("class", function(s, i) { return s; }) |
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.attr("offset", function(s, i) { |
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return (i ? p(d.frequency) : "0") + "%"; |
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}) |
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; |
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}) |
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; |
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}); |
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function type(d) { |
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d.frequency = +d.frequency; |
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return d; |
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} |
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</script> |
