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94 lines
2.4 KiB
94 lines
2.4 KiB
/* ------------------------------------------------------------------------------ |
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* |
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* # D3.js - basic pie chart |
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* |
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* Demo d3.js pie chart setup with .csv data source |
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* |
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* Version: 1.0 |
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* Latest update: August 1, 2015 |
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* |
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* ---------------------------------------------------------------------------- */ |
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$(function () { |
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// Initialize chart |
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pieBasic('#d3-pie-basic', 120); |
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// Chart setup |
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function pieBasic(element, radius) { |
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// Basic setup |
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// ------------------------------ |
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// Colors |
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var color = d3.scale.category20(); |
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// Create chart |
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// ------------------------------ |
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// Add SVG element |
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var container = d3.select(element).append("svg"); |
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// Add SVG group |
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var svg = container |
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.attr("width", radius * 2) |
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.attr("height", radius * 2) |
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.append("g") |
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.attr("transform", "translate(" + radius + "," + radius + ")"); |
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// Construct chart layout |
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// ------------------------------ |
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// Arc |
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var arc = d3.svg.arc() |
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.outerRadius(radius) |
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.innerRadius(0); |
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// Pie |
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var pie = d3.layout.pie() |
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.sort(null) |
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.value(function(d) { return d.population; }); |
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// Load data |
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// ------------------------------ |
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d3.csv("assets/demo_data/d3/pies/pies_basic.csv", function(error, data) { |
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// Pull out values |
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data.forEach(function(d) { |
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d.population = +d.population; |
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}); |
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// |
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// Append chart elements |
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// |
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// Bind data |
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var g = svg.selectAll(".d3-arc") |
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.data(pie(data)) |
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.enter() |
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.append("g") |
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.attr("class", "d3-arc"); |
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// Add arc path |
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g.append("path") |
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.attr("d", arc) |
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.style("stroke", "#fff") |
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.style("fill", function(d) { return color(d.data.age); }); |
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// Add text labels |
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g.append("text") |
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.attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")"; }) |
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.attr("dy", ".35em") |
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.style("fill", "#fff") |
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.style("font-size", 12) |
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.style("text-anchor", "middle") |
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.text(function(d) { return d.data.age; }); |
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}); |
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} |
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});
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