2015-05-23 21:19:30 +02:00
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<!doctype html>
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<html>
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<head>
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2015-05-23 23:50:27 +02:00
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<title>Line Chart Multiple Axes</title>
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2015-05-23 21:19:30 +02:00
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<script src="../Chart.js"></script>
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<script src="../node_modules/jquery/dist/jquery.min.js"></script>
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</head>
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<body>
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2015-06-13 02:50:26 +02:00
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<div style="width:50%;">
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2015-06-12 22:00:48 +02:00
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<canvas id="canvas" style="width:100%;height:100%"></canvas>
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2015-05-23 21:19:30 +02:00
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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 * (Math.random() > 0.5 ? -1 : 1));
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};
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var randomColor = function(opacity) {
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return 'rgba(' + Math.round(Math.random() * 255) + ',' + Math.round(Math.random() * 255) + ',' + Math.round(Math.random() * 255) + ',' + (opacity || '.3') + ')';
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};
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var lineChartData = {
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labels: ["January", "February", "March", "April", "May", "June", "July"],
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datasets: [{
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label: "My First dataset",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
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yAxisID: "y-axis-1",
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}, {
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label: "My Second dataset",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
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yAxisID: "y-axis-2"
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}]
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};
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$.each(lineChartData.datasets, function(i, dataset) {
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dataset.borderColor = randomColor(0.4);
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dataset.backgroundColor = randomColor(1);
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dataset.pointBorderColor = randomColor(0.7);
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dataset.pointBackgroundColor = randomColor(0.5);
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dataset.pointBorderWidth = 1;
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});
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console.log(lineChartData);
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window.onload = function() {
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var ctx = document.getElementById("canvas").getContext("2d");
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window.myLine = new Chart(ctx).Line({
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2015-06-12 22:00:48 +02:00
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data: lineChartData,
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2015-05-23 21:19:30 +02:00
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options: {
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responsive: true,
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hoverMode: 'label',
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stacked: false,
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scales: {
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xAxes: [{
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2015-06-13 02:50:26 +02:00
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display: true,
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2015-05-23 21:19:30 +02:00
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gridLines: {
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offsetGridLines: false
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}
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}],
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yAxes: [{
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2015-06-13 00:24:51 +02:00
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type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
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2015-06-13 02:50:26 +02:00
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display: true,
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2015-05-23 21:19:30 +02:00
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position: "left",
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id: "y-axis-1",
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}, {
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2015-06-13 00:24:51 +02:00
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type: "linear", // only linear but allow scale type registration. This allows extensions to exist solely for log scale for instance
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2015-06-13 02:50:26 +02:00
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display: true,
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2015-05-23 21:19:30 +02:00
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position: "right",
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id: "y-axis-2",
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2015-06-12 22:00:48 +02:00
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2015-05-23 21:19:30 +02:00
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// grid line settings
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gridLines: {
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drawOnChartArea: false, // only want the grid lines for one axis to show up
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},
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}],
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}
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}
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});
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};
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$('#randomizeData').click(function() {
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lineChartData.datasets[0].data = [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()];
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lineChartData.datasets[1].data = [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()];
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window.myLine.update();
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});
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</script>
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</body>
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</html>
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