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Thank you ! But I still got a problem…
<script type="text/javascript"> window.onload = function () { var dps = []; // dataPoints var instance = (new Date()).getTime(); var chart = new CanvasJS.Chart("chartContainer",{ title :{ text: "Live SpO2 Data" }, axisX:{ title: "Time", valueFormatString:"hh:mm:ss" }, axisY:{ title: "%SpO2", }, data: [{ type: "spline", xValueType: "dateTime", dataPoints: dps }] }); var yVal = [0.02, 0.02, 0.02, 0.02, 0.05, 0.07, 0.06, 0.09, 0.06,-0.2, 0.9, 0.5, -0.1, 0.02, 0.02, 0.04, 0.1, 0.08, 0.03, 0.02, 0.02, 0.02, 0.02, 0.02]; var updateInterval = 1000; var dataLength = 50; // number of dataPoints visible at any point var time = (new Date()).getTime(); var updateChart = function (count) { count = count || 1; // count is number of times loop runs to generate random dataPoints. for (var j = 0; j < yVal.length; j++) { dps.push({ x: time, y: yVal[j] }); time++; }; if (dps.length > dataLength) { dps.shift(); } chart.render(); }; // generates first set of dataPoints updateChart(dataLength); // update chart after specified time. seInterval(function(){updateChart()}, updateInterval); }
I can’t shift the frame, looks like it’s getting tighter and I can’t see the signal after few interval. I know the problem comes from if() function but I don’t know how to fix it. Can you try to use my code, you’ll see what I mean, please help me, I’m so close to get the final result !