--- /dev/null
+<!doctype html>
+<html>
+
+<head>
+ <title>Time Scale Point Data</title>
+ <script src="../node_modules/moment/min/moment.min.js"></script>
+ <script src="../Chart.js"></script>
+ <script src="../node_modules/jquery/dist/jquery.min.js"></script>
+ <style>
+ canvas {
+ -webkit-box-shadow: 0 0 20px 0 rgba(0, 0, 0, .5);
+ }
+ </style>
+</head>
+
+<body>
+ <div style="width:100%;">
+ <canvas id="canvas" style="width:100%;height:100%"></canvas>
+ </div>
+ <br>
+ <br>
+ <button id="randomizeData">Randomize Data</button>
+ <button id="addData">Add Data</button>
+ <button id="removeData">Remove Data</button>
+ <div>
+ <h3>Legend</h3>
+ <div id="legendContainer">
+ </div>
+ </div>
+ <script>
+ var randomScalingFactor = function() {
+ return Math.round(Math.random() * 100 * (Math.random() > 0.5 ? -1 : 1));
+ };
+ var randomColorFactor = function() {
+ return Math.round(Math.random() * 255);
+ };
+ var randomColor = function(opacity) {
+ return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',' + (opacity || '.3') + ')';
+ };
+ var newDate = function(days) {
+ var date = new Date();
+ return date.setDate(date.getDate() + days);
+ };
+ var newTimestamp = function(days) {
+ return Date.now() - days * 100000;
+ };
+
+ var config = {
+ type: 'line',
+ data: {
+ datasets: [{
+ label: "Dataset with point data",
+ data: [{
+ x: "12/31/2014 06:00",
+ y: randomScalingFactor()
+ }, {
+ x: "01/04/2015 13:00",
+ y: randomScalingFactor()
+ }, {
+ x: "01/07/2015 01:15",
+ y: randomScalingFactor()
+ }, {
+ x: "01/15/2015 01:15",
+ y: randomScalingFactor()
+ }],
+ fill: false
+ }]
+ },
+ options: {
+ responsive: true,
+ scales: {
+ xAxes: [{
+ type: "time",
+ display: true,
+ time: {
+ format: 'MM/DD/YYYY HH:mm',
+ // round: 'day'
+ },
+ scaleLabel: {
+ show: true,
+ labelString: 'Date'
+ }
+ }, ],
+ yAxes: [{
+ display: true,
+ scaleLabel: {
+ show: true,
+ labelString: 'value'
+ }
+ }]
+ },
+ elements: {
+ line: {
+ tension: 0.3
+ }
+ },
+ }
+ };
+
+ $.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;
+ });
+
+ console.log(config.data);
+
+ window.onload = function() {
+ var ctx = document.getElementById("canvas").getContext("2d");
+ window.myLine = new Chart(ctx, config);
+
+ updateLegend();
+ };
+
+ function updateLegend() {
+ $legendContainer = $('#legendContainer');
+ $legendContainer.empty();
+ $legendContainer.append(window.myLine.generateLegend());
+ }
+
+ $('#randomizeData').click(function() {
+ $.each(config.data.datasets, function(i, dataset) {
+ dataset.data = dataset.data.map(function() {
+ return randomScalingFactor();
+ });
+ });
+
+ window.myLine.update();
+ updateLegend();
+ });
+
+ $('#addData').click(function() {
+ if (config.data.datasets.length > 0) {
+ var newTime = myLine.scales['x-axis-0'].labelMoments[0][myLine.scales['x-axis-0'].labelMoments[0].length - 1]
+ .clone()
+ .add(1, 'day')
+ .format('MM/DD/YYYY HH:mm');
+
+ for (var index = 0; index < config.data.datasets.length; ++index) {
+ config.data.datasets[index].data.push({
+ x: newTime,
+ y: randomScalingFactor()
+ });
+ }
+
+ window.myLine.update();
+ updateLegend();
+ }
+ });
+
+ $('#removeData').click(function() {
+ config.data.datasets.forEach(function(dataset, datasetIndex) {
+ dataset.data.pop();
+ });
+
+ window.myLine.update();
+ updateLegend();
+ });
+ </script>
+</body>
+
+</html>
// Only parse these once. If the dataset does not have data as x,y pairs, we will use
// these
var scaleLabelMoments = [];
- helpers.each(this.data.labels, function(label, index) {
- var labelMoment = this.parseTime(label);
- if (this.options.time.round) {
- labelMoment.startOf(this.options.time.round);
- }
- scaleLabelMoments.push(labelMoment);
- }, this);
+ if (this.data.labels && this.data.labels.length > 0) {
+ helpers.each(this.data.labels, function(label, index) {
+ var labelMoment = this.parseTime(label);
+ if (this.options.time.round) {
+ labelMoment.startOf(this.options.time.round);
+ }
+ scaleLabelMoments.push(labelMoment);
+ }, this);
- this.firstTick = moment.min.call(this, scaleLabelMoments);
- this.lastTick = moment.max.call(this, scaleLabelMoments);
+ this.firstTick = moment.min.call(this, scaleLabelMoments);
+ this.lastTick = moment.max.call(this, scaleLabelMoments);
+ } else {
+ this.firstTick = null;
+ this.lastTick = null;
+ }
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
var momentsForDataset = [];
momentsForDataset.push(labelMoment);
// May have gone outside the scale ranges, make sure we keep the first and last ticks updated
- this.firstTick = moment.min(this.firstTick, labelMoment);
- this.lastTick = moment.max(this.lastTick, labelMoment);
+ this.firstTick = this.firstTick !== null ? moment.min(this.firstTick, labelMoment) : labelMoment;
+ this.lastTick = this.lastTick !== null ? moment.max(this.lastTick, labelMoment) : labelMoment;
}, this);
} else {
// We have no labels. Use the ones from the scale
},
// Get tooltip label
getLabelForIndex: function(index, datasetIndex) {
- var label = this.data.labels[index];
+ var label = this.data.labels && index < this.data.labels.length ? this.data.labels[index] : '';
if (typeof this.data.datasets[datasetIndex].data[0] === 'object') {
label = this.getRightValue(this.data.datasets[datasetIndex].data[index]);
projects / thirdparty / Chart.js.git / commitdiff
