mirror of
https://github.com/chartjs/Chart.js.git
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99 lines
2.1 KiB
HTML
99 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en-US">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=Edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Scriptable > Polar Area | Chart.js sample</title>
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<link rel="stylesheet" type="text/css" href="../style.css">
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<script src="../../dist/chart.min.js"></script>
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<script src="../utils.js"></script>
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</head>
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<body>
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<div class="content">
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<div class="wrapper"><canvas id="chart-0"></canvas></div>
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<div class="toolbar">
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<button onclick="randomize()">Randomize</button>
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<button onclick="addData()">Add Data</button>
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<button onclick="removeData()">Remove Data</button>
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</div>
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</div>
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<script>
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var DATA_COUNT = 7;
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var utils = Samples.utils;
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utils.srand(110);
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function colorize(opaque, hover, ctx) {
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var v = ctx.dataset.data[ctx.dataIndex];
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var c = v < 35 ? '#D60000'
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: v < 55 ? '#F46300'
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: v < 75 ? '#0358B6'
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: '#44DE28';
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var opacity = hover ? 1 - Math.abs(v / 150) - 0.2 : 1 - Math.abs(v / 150);
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return opaque ? c : utils.transparentize(c, opacity);
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}
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function hoverColorize(ctx) {
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return colorize(false, true, ctx);
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}
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function generateData() {
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return utils.numbers({
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count: DATA_COUNT,
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min: 0,
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max: 100
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});
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}
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var data = {
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datasets: [{
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data: generateData(),
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}]
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};
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var options = {
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legend: false,
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tooltips: false,
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elements: {
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arc: {
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backgroundColor: colorize.bind(null, false, false),
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hoverBackgroundColor: hoverColorize
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}
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}
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};
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var chart = new Chart('chart-0', {
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type: 'polarArea',
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data: data,
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options: options
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});
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// eslint-disable-next-line no-unused-vars
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function randomize() {
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chart.data.datasets.forEach(function(dataset) {
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dataset.data = generateData();
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});
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chart.update();
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}
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// eslint-disable-next-line no-unused-vars
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var addData = function() {
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var newData = Math.round(Math.random() * 100);
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chart.data.datasets[0].data.push(newData);
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chart.update();
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};
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// eslint-disable-next-line no-unused-vars
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function removeData() {
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chart.data.datasets[0].data.pop();
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chart.update();
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}
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</script>
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</body>
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</html>
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