mirror of
https://github.com/chartjs/Chart.js.git
synced 2025-12-08 20:36:08 +00:00
Pie Chart
This commit is contained in:
Tanner Linsley
parent
7e791e02f2
commit
9be48a73ea
@ -43,10 +43,6 @@
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data: barChartData,
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options: {
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responsive: true,
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hoverMode: 'label',
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scaleBeginAtZero: false,
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hoverAnimationDuration: 400,
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stacked: true,
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}
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});
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};
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@ -24,50 +24,80 @@
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<button id="randomizeData">Randomize Data</button>
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<script>
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var randomScalingFactor = function() {
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return Math.round(Math.random() * 100)
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return Math.round(Math.random() * 100);
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};
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var randomColorFactor = function() {
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return Math.round(Math.random() * 255)
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return Math.round(Math.random() * 255);
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};
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var doughnutData = {
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data: [{
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value: randomScalingFactor(),
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backgroundColor: "#F7464A",
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label: "Red"
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var config = {
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data: {
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datasets: [{
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data: [
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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],
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backgroundColor: [
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"#F7464A",
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"#46BFBD",
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"#FDB45C",
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"#949FB1",
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"#4D5360",
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],
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}, {
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value: randomScalingFactor(),
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backgroundColor: "#46BFBD",
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label: "Green"
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data: [
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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],
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backgroundColor: [
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"#F7464A",
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"#46BFBD",
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"#FDB45C",
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"#949FB1",
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"#4D5360",
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],
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}, {
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value: randomScalingFactor(),
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backgroundColor: "#FDB45C",
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label: "Yellow"
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}, {
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value: randomScalingFactor(),
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backgroundColor: "#949FB1",
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label: "Grey"
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}, {
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value: randomScalingFactor(),
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backgroundColor: "#4D5360",
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label: "Dark Grey"
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}
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]
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data: [
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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randomScalingFactor(),
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],
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backgroundColor: [
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"#F7464A",
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"#46BFBD",
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"#FDB45C",
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"#949FB1",
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"#4D5360",
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],
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}],
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labels: [
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"Red",
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"Green",
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"Yellow",
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"Grey",
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"Dark Grey"
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]
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},
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options: {
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responsive: true
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}
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};
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window.onload = function() {
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var ctx = document.getElementById("chart-area").getContext("2d");
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window.myDoughnut = new Chart(ctx).Doughnut({
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data: doughnutData,
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options: {
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responsive: true
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}
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});
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window.myDoughnut = new Chart(ctx).Doughnut(config);
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};
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$('#randomizeData').click(function() {
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$.each(doughnutData.data, function(i, datapoint) {
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$.each(config.data, function(i, datapoint) {
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datapoint.value = randomScalingFactor();
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datapoint.backgroundColor = 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',.7)';
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});
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121
samples/pie.html
121
samples/pie.html
@ -1,72 +1,69 @@
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<!doctype html>
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<html>
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<head>
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<title>Pie Chart</title>
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<script src="../Chart.js"></script>
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<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
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</head>
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<body>
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<div id="canvas-holder">
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<canvas id="chart-area" width="300" height="300"/>
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</div>
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<button id="randomizeData">Randomize Data</button>
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<script>
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<head>
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<title>Pie Chart</title>
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<script src="../Chart.js"></script>
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<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
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</head>
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var randomScalingFactor = function(){ return Math.round(Math.random()*100)};
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var randomColorFactor = function(){ return Math.round(Math.random()*255)};
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<body>
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<div id="canvas-holder">
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<canvas id="chart-area" width="300" height="300" />
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</div>
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<button id="randomizeData">Randomize Data</button>
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<script>
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var randomScalingFactor = function() {
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return Math.round(Math.random() * 100);
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};
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var randomColorFactor = function() {
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return Math.round(Math.random() * 255);
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};
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var pieData = [
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{
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value: randomScalingFactor(),
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color:"#F7464A",
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highlight: "#FF5A5E",
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label: "Red"
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},
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{
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value: randomScalingFactor(),
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color: "#46BFBD",
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highlight: "#5AD3D1",
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label: "Green"
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},
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{
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value: randomScalingFactor(),
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color: "#FDB45C",
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highlight: "#FFC870",
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label: "Yellow"
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},
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{
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value: randomScalingFactor(),
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color: "#949FB1",
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highlight: "#A8B3C5",
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label: "Grey"
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},
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{
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value: randomScalingFactor(),
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color: "#4D5360",
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highlight: "#616774",
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label: "Dark Grey"
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}
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var pieData = [{
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value: randomScalingFactor(),
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color: "#F7464A",
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highlight: "#FF5A5E",
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label: "Red"
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}, {
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value: randomScalingFactor(),
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color: "#46BFBD",
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highlight: "#5AD3D1",
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label: "Green"
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}, {
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value: randomScalingFactor(),
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color: "#FDB45C",
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highlight: "#FFC870",
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label: "Yellow"
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}, {
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value: randomScalingFactor(),
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color: "#949FB1",
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highlight: "#A8B3C5",
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label: "Grey"
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}, {
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value: randomScalingFactor(),
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color: "#4D5360",
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highlight: "#616774",
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label: "Dark Grey"
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}
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];
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];
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window.onload = function(){
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var ctx = document.getElementById("chart-area").getContext("2d");
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window.myPie = new Chart(ctx).Pie({
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data: pieData
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});
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};
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window.onload = function() {
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var ctx = document.getElementById("chart-area").getContext("2d");
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window.myPie = new Chart(ctx).Pie({
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data: pieData
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});
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};
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$('#randomizeData').click(function(){
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$.each(pieData, function(i, piece){
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pieData[i].value = randomScalingFactor();
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pieData[i].color = 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',.7)';
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});
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window.myPie.update();
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});
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$('#randomizeData').click(function() {
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$.each(pieData, function(i, piece) {
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pieData[i].value = randomScalingFactor();
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pieData[i].color = 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',.7)';
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});
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window.myPie.update();
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});
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</script>
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</body>
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</script>
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</body>
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</html>
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@ -135,6 +135,11 @@
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valueSpacing: 5,
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datasetSpacing: 1,
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},
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slice: {
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backgroundColor: defaultColor,
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borderColor: "#fff",
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borderWidth: 2,
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},
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}
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},
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};
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@ -7,21 +7,6 @@
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helpers = Chart.helpers;
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var defaultConfig = {
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segments: {
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//Boolean - Whether we should show a stroke on each segment
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showStroke: true,
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//String - The colour of each segment stroke
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strokeColor: "#fff",
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//Number - The width of each segment stroke
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borderWidth: 2,
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},
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hover: {
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// The duration of animations triggered by hover events
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animationDuration: 400,
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},
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animation: {
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//Boolean - Whether we animate the rotation of the Doughnut
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@ -32,10 +17,8 @@
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},
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//The percentage of the chart that we cut out of the middle.
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cutoutPercentage: 50,
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//String - A legend template
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legendTemplate: "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].backgroundColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
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cutoutPercentage: 1,
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};
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@ -47,40 +30,21 @@
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//Initialize is fired when the chart is initialized - Data is passed in as a parameter
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//Config is automatically merged by the core of Chart.js, and is available at this.options
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initialize: function() {
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// Slice Type and defaults
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this.Slice = Chart.Arc.extend({
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_chart: this.chart,
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x: this.chart.width / 2,
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y: this.chart.height / 2
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});
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//Set up tooltip events on the chart
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if (this.options.tooltips.enabled) {
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helpers.bindEvents(this, this.options.events, this.onHover);
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}
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helpers.bindEvents(this, this.options.events, this.events);
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// Create new slice for each piece of data
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this.data.metaData = [];
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helpers.each(this.data.data, function(slice, index) {
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var metaSlice = new this.Slice();
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if (typeof slice == 'number') {
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helpers.extend(metaSlice, {
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value: slice
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});
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} else {
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helpers.extend(metaSlice, slice);
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}
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helpers.extend(metaSlice, {
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startAngle: Math.PI * 1.5,
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circumference: (this.options.animation.animateRotate) ? 0 : this.calculateCircumference(metaSlice.value),
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outerRadius: (this.options.animation.animateScale) ? 0 : this.outerRadius,
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innerRadius: (this.options.animation.animateScale) ? 0 : (this.outerRadius / 100) * this.options.percentageInnerCutout,
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});
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if (!metaSlice.backgroundColor) {
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slice.backgroundColor = 'hsl(' + (360 * index / this.data.data.length) + ', 100%, 50%)';
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}
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metaSlice.save();
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this.data.metaData.push(metaSlice);
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//Create a new bar for each piece of data
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helpers.each(this.data.datasets, function(dataset, datasetIndex) {
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dataset.metaData = [];
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helpers.each(dataset.data, function(dataPoint, index) {
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dataset.metaData.push(new Chart.Arc({
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_chart: this.chart,
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_datasetIndex: datasetIndex,
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_index: index,
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_model: {}
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}));
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}, this);
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}, this);
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// Create tooltip instance exclusively for this chart with some defaults.
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@ -90,9 +54,104 @@
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_options: this.options,
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}, this);
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// Update the chart with the latest data.
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this.update();
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},
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onHover: function(e) {
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getSliceAtEvent: function(e) {
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var elements = [];
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var location = helpers.getRelativePosition(e);
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helpers.each(this.data.metaData, function(slice, index) {
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if (slice.inRange(location.x, location.y)) elements.push(slice);
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}, this);
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return elements;
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},
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calculateCircumference: function(dataset, value) {
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if (dataset.total > 0) {
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return (Math.PI * 2) * (value / dataset.total);
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} else {
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return 0;
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}
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},
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update: function() {
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this.outerRadius = (helpers.min([this.chart.width, this.chart.height]) - this.options.elements.slice.borderWidth / 2) / 2;
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this.innerRadius = (this.outerRadius / 100) * this.options.cutoutPercentage;
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this.radiusLength = (this.outerRadius - this.innerRadius) / this.data.datasets.length;
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// Update the points
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helpers.each(this.data.datasets, function(dataset, datasetIndex) {
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dataset.total = 0;
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helpers.each(dataset.data, function(value) {
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dataset.total += Math.abs(value);
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}, this);
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dataset.outerRadius = this.outerRadius - (this.radiusLength * datasetIndex);
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dataset.innerRadius = dataset.outerRadius - this.radiusLength;
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helpers.each(dataset.metaData, function(slice, index) {
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helpers.extend(slice, {
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// Utility
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_chart: this.chart,
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_datasetIndex: datasetIndex,
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_index: index,
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// Desired view properties
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_model: {
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x: this.chart.width / 2,
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y: this.chart.height / 2,
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circumference: this.calculateCircumference(dataset, dataset.data[index]),
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outerRadius: dataset.outerRadius,
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innerRadius: dataset.innerRadius,
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backgroundColor: slice.custom && slice.custom.backgroundColor ? slice.custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, this.options.elements.slice.backgroundColor),
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hoverBackgroundColor: slice.custom && slice.custom.hoverBackgroundColor ? slice.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, this.options.elements.slice.hoverBackgroundColor),
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borderWidth: slice.custom && slice.custom.borderWidth ? slice.custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, this.options.elements.slice.borderWidth),
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borderColor: slice.custom && slice.custom.borderColor ? slice.custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, this.options.elements.slice.borderColor),
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label: helpers.getValueAtIndexOrDefault(dataset.label, index, this.data.labels[index])
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},
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});
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if (index === 0) {
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slice._model.startAngle = Math.PI * 1.5;
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} else {
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slice._model.startAngle = dataset.metaData[index - 1]._model.endAngle;
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}
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slice._model.endAngle = slice._model.startAngle + slice._model.circumference;
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//Check to see if it's the last slice, if not get the next and update its start angle
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if (index < dataset.data.length - 1) {
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dataset.metaData[index + 1]._model.startAngle = slice._model.endAngle;
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}
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slice.pivot();
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}, this);
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}, this);
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this.render();
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},
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draw: function(easeDecimal) {
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easeDecimal = easeDecimal || 1;
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this.clear();
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this.eachElement(function(slice) {
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slice.transition(easeDecimal).draw();
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}, this);
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this.tooltip.transition(easeDecimal).draw();
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},
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events: function(e) {
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// If exiting chart
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if (e.type == 'mouseout') {
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@ -169,83 +228,6 @@
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return this;
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},
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getSliceAtEvent: function(e) {
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var elements = [];
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var location = helpers.getRelativePosition(e);
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helpers.each(this.data.metaData, function(slice, index) {
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if (slice.inRange(location.x, location.y)) elements.push(slice);
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}, this);
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return elements;
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},
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calculateCircumference: function(value) {
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if (this.total > 0) {
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return (Math.PI * 2) * (value / this.total);
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} else {
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return 0;
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}
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},
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update: function() {
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// Calc Total
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this.total = 0;
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helpers.each(this.data.data, function(slice) {
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this.total += Math.abs(slice.value);
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}, this);
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this.outerRadius = (helpers.min([this.chart.width, this.chart.height]) - this.options.segments.borderWidth / 2) / 2;
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// Map new data to data points
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helpers.each(this.data.metaData, function(slice, index) {
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var datapoint = this.data.data[index];
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helpers.extend(slice, {
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_index: index,
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x: this.chart.width / 2,
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y: this.chart.height / 2,
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value: datapoint.value,
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label: datapoint.label,
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circumference: this.calculateCircumference(datapoint.value),
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outerRadius: this.outerRadius,
|
||||
innerRadius: (this.outerRadius / 100) * this.options.cutoutPercentage,
|
||||
|
||||
backgroundColor: datapoint.backgroundColor,
|
||||
hoverBackgroundColor: datapoint.hoverBackgroundColor || datapoint.backgroundColor,
|
||||
borderWidth: this.options.segments.borderWidth,
|
||||
borderColor: this.options.segments.strokeColor,
|
||||
});
|
||||
|
||||
helpers.extend(slice, {
|
||||
endAngle: slice.startAngle + slice.circumference,
|
||||
});
|
||||
|
||||
if (index === 0) {
|
||||
slice.startAngle = Math.PI * 1.5;
|
||||
}
|
||||
|
||||
//Check to see if it's the last slice, if not get the next and update its start angle
|
||||
if (index < this.data.data.length - 1) {
|
||||
this.data.metaData[index + 1].startAngle = slice.endAngle;
|
||||
}
|
||||
|
||||
slice.pivot();
|
||||
|
||||
}, this);
|
||||
|
||||
this.render();
|
||||
},
|
||||
draw: function(easeDecimal) {
|
||||
easeDecimal = easeDecimal || 1;
|
||||
this.clear();
|
||||
|
||||
helpers.each(this.data.metaData, function(slice, index) {
|
||||
slice.transition(easeDecimal).draw();
|
||||
}, this);
|
||||
|
||||
this.tooltip.transition(easeDecimal).draw();
|
||||
}
|
||||
});
|
||||
|
||||
Chart.types.Doughnut.extend({
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user