56 lines
1.1 KiB
HTML
Executable File
56 lines
1.1 KiB
HTML
Executable File
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="UTF-8">
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<script>
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window.onload = function () {
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var dps = [];
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var chart = new CanvasJS.Chart("chartContainer", {
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exportEnabled: true,
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title :{
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text: "Dynamic Spline Chart"
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},
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axisY: {
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includeZero: false
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},
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data: [{
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type: "spline",
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markerSize: 0,
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dataPoints: dps
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}]
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});
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var xVal = 0;
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var yVal = 100;
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var updateInterval = 1000;
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var dataLength = 50; // number of dataPoints visible at any point
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var updateChart = function (count) {
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count = count || 1;
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// count is number of times loop runs to generate random dataPoints.
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for (var j = 0; j < count; j++) {
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yVal = yVal + Math.round(5 + Math.random() *(-5-5));
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dps.push({
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x: xVal,
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y: yVal
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});
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xVal++;
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}
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if (dps.length > dataLength) {
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dps.shift();
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}
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chart.render();
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};
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updateChart(dataLength);
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setInterval(function(){ updateChart() }, updateInterval);
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}
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</script>
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</head>
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<body>
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<div id="chartContainer" style="height: 370px; max-width: 920px; margin: 0px auto;"></div>
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<script src="../../canvasjs.min.js"></script>
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</body>
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</html> |