mirror of
https://github.com/chartjs/Chart.js.git
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116 lines
2.4 KiB
HTML
116 lines
2.4 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 > Line | 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(this)">Randomize</button>
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<button onclick="addDataset(this)">Add Dataset</button>
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<button onclick="removeDataset(this)">Remove Dataset</button>
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</div>
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</div>
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<script>
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var DATA_COUNT = 12;
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var utils = Samples.utils;
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utils.srand(110);
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function getLineColor(ctx) {
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return utils.color(ctx.datasetIndex);
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}
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function alternatePointStyles(ctx) {
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var index = ctx.dataIndex;
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return index % 2 === 0 ? 'circle' : 'rect';
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}
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function makeHalfAsOpaque(ctx) {
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return utils.transparentize(getLineColor(ctx));
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}
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function adjustRadiusBasedOnData(ctx) {
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var v = ctx.dataPoint.y;
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return v < 10 ? 5
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: v < 25 ? 7
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: v < 50 ? 9
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: v < 75 ? 11
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: 15;
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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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labels: utils.months({count: DATA_COUNT}),
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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: true,
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elements: {
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line: {
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fill: false,
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backgroundColor: getLineColor,
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borderColor: getLineColor,
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},
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point: {
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backgroundColor: getLineColor,
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hoverBackgroundColor: makeHalfAsOpaque,
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radius: adjustRadiusBasedOnData,
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pointStyle: alternatePointStyles,
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hoverRadius: 15,
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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: 'line',
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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 addDataset() {
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chart.data.datasets.push({
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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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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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function removeDataset() {
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chart.data.datasets.shift();
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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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