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146 lines
4.2 KiB
146 lines
4.2 KiB
3 years ago
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/* ------------------------------------------------------------------------------
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*
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* # D3.js - donut chart entry animation
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*
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* Demo d3.js donut chart setup with .csv data source and loading animation
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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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donutEntryAnimation('#d3-donut-entry-animation', 120);
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// Chart setup
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function donutEntryAnimation(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(radius / 1.75);
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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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.transition()
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.ease("linear")
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.duration(1000)
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.attrTween("d", tweenPie);
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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("opacity", 0)
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.style("fill", "#fff")
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.style("text-anchor", "middle")
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.text(function(d) { return d.data.age; })
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.transition()
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.ease("linear")
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.delay(1000)
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.duration(500)
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.style("opacity", 1);
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// Tween
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function tweenPie(b) {
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b.innerRadius = 0;
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var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
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return function(t) { return arc(i(t)); };
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}
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// Animate donut
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// ------------------------------
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$('.donut-animation').on('click', function (b) {
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// Remove old paths
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svg.selectAll("path").remove();
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// 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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.transition()
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.ease("linear")
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.duration(1000)
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.attrTween("d", tweenPie);
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// 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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.style("opacity", 0)
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.style("fill", "#fff")
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.attr("dy", ".35em")
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.style("text-anchor", "middle")
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.text(function(d) { return d.data.age; })
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.transition()
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.ease("linear")
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.delay(1000)
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.duration(500)
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.style("opacity", 1);
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});
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});
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}
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});
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