<!doctype html> <html> <head> <title>Line Chart - Combo Time Scale</title> <script src="../../node_modules/moment/min/moment.min.js"></script> <script src="../../dist/Chart.bundle.js"></script> <script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <style> canvas { -moz-user-select: none; -webkit-user-select: none; -ms-user-select: none; } </style> </head> <body> <div style="width:75%;"> <canvas id="canvas"></canvas> </div> <br> <br> <button id="randomizeData">Randomize Data</button> <button id="addDataset">Add Dataset</button> <button id="removeDataset">Remove Dataset</button> <button id="addData">Add Data</button> <button id="removeData">Remove Data</button> <script> var timeFormat = 'MM/DD/YYYY HH:mm'; function randomScalingFactor() { return Math.round(Math.random() * 100 * (Math.random() > 0.5 ? -1 : 1)); } function randomColorFactor() { return Math.round(Math.random() * 255); } function randomColor(opacity) { return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',' + (opacity || '.3') + ')'; } function newDateString(days) { return moment().add(days, 'd').format(timeFormat); } var config = { type: 'bar', data: { labels: [newDateString(0), newDateString(1), newDateString(2), newDateString(3), newDateString(4), newDateString(5), newDateString(6)], datasets: [{ type: 'bar', label: 'Dataset 1', backgroundColor: "rgba(151,187,205,0.5)", data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()], borderColor: 'white', borderWidth: 2 }, { type: 'bar', label: 'Dataset 2', backgroundColor: "rgba(151,187,205,0.5)", data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()], borderColor: 'white', borderWidth: 2 }, { type: 'line', label: 'Dataset 3', backgroundColor: "rgba(220,220,220,0.5)", data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()] }, ] }, options: { showLines: true, responsive: true, title:{ display:true, text:"Chart.js Combo Time Scale" }, scales: { xAxes: [{ type: "time", display: true, time: { format: timeFormat, // round: 'day' } }], }, } }; $.each(config.data.datasets, function(i, dataset) { dataset.borderColor = randomColor(0.4); dataset.backgroundColor = randomColor(0.5); dataset.pointBorderColor = randomColor(0.7); dataset.pointBackgroundColor = randomColor(0.5); dataset.pointBorderWidth = 1; }); window.onload = function() { var ctx = document.getElementById("canvas").getContext("2d"); window.myLine = new Chart(ctx, config); }; $('#randomizeData').click(function() { $.each(config.data.datasets, function(i, dataset) { dataset.data = dataset.data.map(function() { return randomScalingFactor(); }); }); window.myLine.update(); }); $('#addDataset').click(function() { var newDataset = { label: 'Dataset ' + config.data.datasets.length, borderColor: randomColor(0.4), backgroundColor: randomColor(0.5), pointBorderColor: randomColor(0.7), pointBackgroundColor: randomColor(0.5), pointBorderWidth: 1, data: [], }; for (var index = 0; index < config.data.labels.length; ++index) { newDataset.data.push(randomScalingFactor()); } config.data.datasets.push(newDataset); window.myLine.update(); }); $('#addData').click(function() { if (config.data.datasets.length > 0) { config.data.labels.push(newDateString(config.data.labels.length)); for (var index = 0; index < config.data.datasets.length; ++index) { config.data.datasets[index].data.push(randomScalingFactor()); } window.myLine.update(); } }); $('#removeDataset').click(function() { config.data.datasets.splice(0, 1); window.myLine.update(); }); $('#removeData').click(function() { config.data.labels.splice(-1, 1); // remove the label first config.data.datasets.forEach(function(dataset, datasetIndex) { config.data.datasets[datasetIndex].data.pop(); }); window.myLine.update(); }); </script> </body> </html>