2015-09-18 19:31:25 +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="../Chart.js"></script>
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<script src="../node_modules/jquery/dist/jquery.min.js"></script>
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<style>
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canvas {
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-webkit-box-shadow: 0 0 20px 0 rgba(0, 0, 0, .5);
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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:100%;">
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<canvas id="canvas" style="width:100%;height:100%"></canvas>
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</div>
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<br>
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<br>
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<button id="randomizeData">Randomize Data</button>
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<button id="addDataset">Add Dataset</button>
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<button id="removeDataset">Remove Dataset</button>
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<button id="addData">Add Data</button>
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<button id="removeData">Remove Data</button>
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<div>
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<h3>Legend</h3>
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<div id="legendContainer">
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</div>
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</div>
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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 randomColorFactor = function() {
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return Math.round(Math.random() * 255);
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};
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var randomColor = function(opacity) {
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return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',' + (opacity || '.3') + ')';
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};
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var newDate = function(days) {
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var date = new Date();
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return date.setDate(date.getDate() + days);
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};
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var newTimestamp = function(days) {
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return Date.now() - days * 100000;
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};
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var config = {
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type: 'bar',
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data: {
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//labels: [newTimestamp(0), newTimestamp(1), newTimestamp(2), newTimestamp(3), newTimestamp(4), newTimestamp(5), newTimestamp(6)], // unix timestamps
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// labels: [newDate(0), newDate(1), newDate(2), newDate(3), newDate(4), newDate(5), newDate(6)], // Date Objects
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labels: ["01/01/2015 20:00", "01/02/2015 20:00", "01/03/2015 22:00", "01/05/2015 23:00", "01/07/2015 03:00", "01/08/2015 10:00", "01/10/2015"], // Hours
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// labels: ["01/01/2015", "01/02/2015", "01/03/2015", "01/06/2015", "01/15/2015", "01/17/2015", "01/30/2015"], // Days
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// labels: ["12/25/2014", "01/08/2015", "01/15/2015", "01/22/2015", "01/29/2015", "02/05/2015", "02/12/2015"], // Weeks
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datasets: [{
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2015-09-24 20:07:40 +02:00
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type: 'bar',
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2015-09-18 19:31:25 +02:00
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label: 'Dataset 1',
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backgroundColor: "rgba(151,187,205,0.5)",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
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borderColor: 'white',
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borderWidth: 2
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}, {
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2015-09-24 20:07:40 +02:00
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type: 'bar',
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2015-09-18 19:31:25 +02:00
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label: 'Dataset 2',
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backgroundColor: "rgba(151,187,205,0.5)",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
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borderColor: 'white',
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borderWidth: 2
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}, {
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type: 'line',
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label: 'Dataset 3',
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backgroundColor: "rgba(220,220,220,0.5)",
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data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
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}, ]
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},
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options: {
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responsive: true,
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scales: {
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xAxes: [{
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type: "time",
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display: true,
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tick: {
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format: 'MM/DD/YYYY HH:mm',
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// round: 'day'
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}
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}, ],
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yAxes: [{
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display: true
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}]
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},
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elements: {
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line: {
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2015-09-24 20:07:40 +02:00
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tension: 0.3
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2015-09-18 19:31:25 +02:00
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}
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},
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}
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};
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$.each(config.data.datasets, function(i, dataset) {
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dataset.borderColor = randomColor(0.4);
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dataset.backgroundColor = randomColor(0.5);
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dataset.pointBorderColor = randomColor(0.7);
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dataset.pointBackgroundColor = randomColor(0.5);
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dataset.pointBorderWidth = 1;
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});
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console.log(config.data);
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window.onload = function() {
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var ctx = document.getElementById("canvas").getContext("2d");
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window.myLine = new Chart(ctx, config);
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updateLegend();
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};
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function updateLegend() {
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$legendContainer = $('#legendContainer');
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$legendContainer.empty();
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$legendContainer.append(window.myLine.generateLegend());
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}
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$('#randomizeData').click(function() {
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$.each(config.data.datasets, function(i, dataset) {
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dataset.data = dataset.data.map(function() {
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return randomScalingFactor();
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});
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});
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window.myLine.update();
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updateLegend();
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});
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$('#addDataset').click(function() {
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var newDataset = {
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label: 'Dataset ' + config.data.datasets.length,
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borderColor: randomColor(0.4),
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backgroundColor: randomColor(0.5),
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pointBorderColor: randomColor(0.7),
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pointBackgroundColor: randomColor(0.5),
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pointBorderWidth: 1,
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data: [],
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};
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for (var index = 0; index < config.data.labels.length; ++index) {
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newDataset.data.push(randomScalingFactor());
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}
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window.myLine.addDataset(newDataset);
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updateLegend();
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});
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$('#addData').click(function() {
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if (config.data.datasets.length > 0) {
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config.data.labels.push(
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2015-09-21 19:52:17 +02:00
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myLine.scales['x-axis-0'].labelMoments[myLine.scales['x-axis-0'].labelMoments.length - 1].add(1, 'day')
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2015-09-18 19:31:25 +02:00
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.format('MM/DD/YYYY')
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);
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for (var index = 0; index < config.data.datasets.length; ++index) {
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window.myLine.addData(randomScalingFactor(), index);
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}
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updateLegend();
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}
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});
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$('#removeDataset').click(function() {
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window.myLine.removeDataset(0);
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updateLegend();
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});
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$('#removeData').click(function() {
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config.data.labels.splice(-1, 1); // remove the label first
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config.data.datasets.forEach(function(dataset, datasetIndex) {
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window.myLine.removeData(datasetIndex, -1);
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});
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updateLegend();
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});
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</script>
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</body>
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</html>
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