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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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fill: brown; |
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} |
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.axis { |
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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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.x.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="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.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 x = d3.scale.ordinal() |
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.rangeRoundBands([0, width], .1); |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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var percent = d3.scale.linear() |
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.range([0, 100]) |
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; |
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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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.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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; |
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var defs = d3.select("body").select("svg") |
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.append("defs") |
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; |
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d3.tsv("data.tsv", type, function(error, data) { |
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if (error) throw error; |
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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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percent.domain(y.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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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, "x2": 0}) |
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.attr({"y1": 1, "y2": 0}) |
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.each(function(d) { |
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d3.select(this).selectAll("stop") |
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.data(["bottom end", "bottom mid", "top mid", "top end"]) |
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.enter().append("stop") |
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.attr("offset", function(o, i) { |
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if(!i) |
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return "0%"; |
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if(i === 3) |
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return "100%"; |
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return percent(d.frequency) + "%"; |
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}) |
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.attr("stop-opacity", function(d, i) { |
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return i < 2 ? 1 : 1e-6; |
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}) |
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.attr("stop-color", "steelblue") |
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}) |
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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", 0) |
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.attr("height", height) |
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.style("fill", function(d,i) { return "url(#gradient" + i + ")"; }) |
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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> |
