2017-09-10 10:54:12 +02:00
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<!doctype html>
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<html>
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<head>
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<title>Line Chart</title>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
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2019-01-06 15:56:58 +01:00
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<script src="../../../dist/Chart.min.js"></script>
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2017-09-10 10:54:12 +02:00
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<script src="../../utils.js"></script>
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<style>
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canvas {
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-moz-user-select: none;
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-webkit-user-select: none;
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-ms-user-select: none;
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}
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</style>
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</head>
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<body>
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<div style="width:1000px">
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<canvas id="chart1"></canvas>
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2018-02-03 13:28:54 +01:00
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</div>
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2017-09-10 10:54:12 +02:00
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<br>
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<br>
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Chart Type:
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<select id="type">
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<option value="line">Line</option>
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<option value="bar">Bar</option>
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</select>
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2019-03-28 07:56:37 +01:00
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<select id="unit">
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<option value="second">Second</option>
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<option value="minute">Minute</option>
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<option value="hour">Hour</option>
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<option value="day" selected>Day</option>
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<option value="month">Month</option>
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<option value="year">Year</option>
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</select>
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2017-09-10 10:54:12 +02:00
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<button id="update">update</button>
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<script>
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2019-03-28 07:56:37 +01:00
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function generateData() {
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function randomNumber(min, max) {
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return Math.random() * (max - min) + min;
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}
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2017-09-10 10:54:12 +02:00
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2019-03-28 07:56:37 +01:00
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function randomBar(date, lastClose) {
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var open = randomNumber(lastClose * 0.95, lastClose * 1.05).toFixed(2);
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var close = randomNumber(open * 0.95, open * 1.05).toFixed(2);
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return {
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t: date.valueOf(),
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y: close
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};
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}
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2017-09-10 10:54:12 +02:00
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2019-03-28 07:56:37 +01:00
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var date = moment('Jan 01 1990', 'MMM DD YYYY');
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var now = moment();
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var data = [randomBar(date, 30)];
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var unit = document.getElementById('unit').value;
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for (; data.length < 60 && date.isBefore(now); date = date.clone().add(1, unit)) {
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if (date.isoWeekday() <= 5) {
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data.push(randomBar(date, data[data.length - 1].y));
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}
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2017-09-10 10:54:12 +02:00
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}
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2019-03-28 07:56:37 +01:00
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return data;
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2017-09-10 10:54:12 +02:00
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}
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2018-02-03 13:28:54 +01:00
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var ctx = document.getElementById('chart1').getContext('2d');
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2017-09-10 10:54:12 +02:00
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ctx.canvas.width = 1000;
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ctx.canvas.height = 300;
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2018-08-08 18:44:53 +02:00
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var color = Chart.helpers.color;
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2017-09-10 10:54:12 +02:00
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var cfg = {
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type: 'bar',
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data: {
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datasets: [{
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2018-02-03 13:28:54 +01:00
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label: 'CHRT - Chart.js Corporation',
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2018-08-08 18:44:53 +02:00
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backgroundColor: color(window.chartColors.red).alpha(0.5).rgbString(),
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borderColor: window.chartColors.red,
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2019-03-28 07:56:37 +01:00
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data: generateData(),
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2017-09-10 10:54:12 +02:00
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type: 'line',
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pointRadius: 0,
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fill: false,
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lineTension: 0,
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borderWidth: 2
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}]
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},
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options: {
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scales: {
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xAxes: [{
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type: 'time',
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distribution: 'series',
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ticks: {
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2019-03-03 15:00:24 +01:00
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source: 'data',
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autoSkip: true
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2017-09-10 10:54:12 +02:00
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}
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}],
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yAxes: [{
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scaleLabel: {
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display: true,
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labelString: 'Closing price ($)'
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}
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}]
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2019-03-03 15:00:24 +01:00
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},
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tooltips: {
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intersect: false,
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mode: 'index',
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callbacks: {
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label: function(tooltipItem, myData) {
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var label = myData.datasets[tooltipItem.datasetIndex].label || '';
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if (label) {
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label += ': ';
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}
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label += parseFloat(tooltipItem.value).toFixed(2);
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return label;
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}
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}
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2017-09-10 10:54:12 +02:00
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}
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}
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};
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2019-03-03 15:00:24 +01:00
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2017-09-10 10:54:12 +02:00
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var chart = new Chart(ctx, cfg);
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document.getElementById('update').addEventListener('click', function() {
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var type = document.getElementById('type').value;
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2019-03-28 07:56:37 +01:00
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var dataset = chart.config.data.datasets[0];
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dataset.type = type;
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dataset.data = generateData();
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2017-09-10 10:54:12 +02:00
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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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