--- /dev/null
+<!doctype html>
+<html>
+
+<head>
+ <title>Line Chart</title>
+ <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="addDataset">Add Dataset</button>
+ <button id="removeDataset">Remove Dataset</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: 'bar',
+ data: {
+ //labels: [newTimestamp(0), newTimestamp(1), newTimestamp(2), newTimestamp(3), newTimestamp(4), newTimestamp(5), newTimestamp(6)], // unix timestamps
+ // labels: [newDate(0), newDate(1), newDate(2), newDate(3), newDate(4), newDate(5), newDate(6)], // Date Objects
+ 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
+ // labels: ["01/01/2015", "01/02/2015", "01/03/2015", "01/06/2015", "01/15/2015", "01/17/2015", "01/30/2015"], // Days
+ // labels: ["12/25/2014", "01/08/2015", "01/15/2015", "01/22/2015", "01/29/2015", "02/05/2015", "02/12/2015"], // Weeks
+ datasets: [{
+ label: 'Dataset 1',
+ backgroundColor: "rgba(151,187,205,0.5)",
+ data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()],
+ borderColor: 'white',
+ borderWidth: 2
+ }, {
+ 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: {
+ responsive: true,
+ scales: {
+ xAxes: [{
+ type: "time",
+ display: true,
+ tick: {
+ format: 'MM/DD/YYYY HH:mm',
+ // round: 'day'
+ }
+ }, ],
+ yAxes: [{
+ display: true
+ }]
+ },
+ elements: {
+ line: {
+ tension: 0
+ }
+ },
+ }
+ };
+
+ $.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();
+ });
+
+ $('#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());
+ }
+
+ window.myLine.addDataset(newDataset);
+ updateLegend();
+ });
+
+ $('#addData').click(function() {
+ if (config.data.datasets.length > 0) {
+ config.data.labels.push(
+ moment(
+ config.data.labels[config.data.labels.length - 1], config.options.scales.xAxes[0].time.format
+ ).add(1, 'day')
+ .format('MM/DD/YYYY')
+ );
+
+ for (var index = 0; index < config.data.datasets.length; ++index) {
+ window.myLine.addData(randomScalingFactor(), index);
+ }
+
+ updateLegend();
+ }
+ });
+
+ $('#removeDataset').click(function() {
+ window.myLine.removeDataset(0);
+ updateLegend();
+ });
+
+ $('#removeData').click(function() {
+ config.data.labels.splice(-1, 1); // remove the label first
+
+ config.data.datasets.forEach(function(dataset, datasetIndex) {
+ window.myLine.removeData(datasetIndex, -1);
+ });
+
+ updateLegend();
+ });
+ </script>
+</body>
+
+</html>
data: {
//labels: [newTimestamp(0), newTimestamp(1), newTimestamp(2), newTimestamp(3), newTimestamp(4), newTimestamp(5), newTimestamp(6)], // unix timestamps
// labels: [newDate(0), newDate(1), newDate(2), newDate(3), newDate(4), newDate(5), newDate(6)], // Date Objects
- labels: ["01/01/2015 20:00", "01/02/2015 21:00", "01/03/2015 22:00", "01/05/2015 23:00", "01/07/2015 03:00", "01/08/2015 10:00", "02/1/2015"], // Hours
+ labels: ["01/01/2015 20:00", "01/02/2015 21:00", "01/03/2015 22:00", "01/05/2015 23:00", "01/07/2015 03:00", "01/08/2015 10:00", "01/10/2015"], // Hours
// labels: ["01/01/2015", "01/02/2015", "01/03/2015", "01/06/2015", "01/15/2015", "01/17/2015", "01/30/2015"], // Days
// labels: ["12/25/2014", "01/08/2015", "01/15/2015", "01/22/2015", "01/29/2015", "02/05/2015", "02/12/2015"], // Weeks
datasets: [{
$('#addData').click(function() {
if (config.data.datasets.length > 0) {
config.data.labels.push(
- moment(
- config.data.labels[config.data.labels.length - 1], config.options.scales.xAxes[0].time.format
- ).add(1, 'day')
- .format('MM/DD/YYYY')
+ myLine.scales['x-axis-0'].labelMoments[myLine.scales['x-axis-0'].labelMoments.length - 1]
+ .clone()
+ .add(1, 'day')
+ .format('MM/DD/YYYY HH:mm')
);
for (var index = 0; index < config.data.datasets.length; ++index) {
this.firstTick.startOf(this.tickUnit);
this.lastTick.endOf(this.tickUnit);
+ this.smallestLabelSeparation = this.width;
+
+ var i = 0;
+
+ for (i = 1; i < this.labelMoments.length; i++) {
+ this.smallestLabelSeparation = Math.min(this.smallestLabelSeparation, this.labelMoments[i].diff(this.labelMoments[i - 1], this.tickUnit, true));
+ }
// Tick displayFormat override
}
// For every unit in between the first and last moment, create a moment and add it to the labels tick
- var i = 0;
if (this.options.labels.userCallback) {
for (; i <= this.tickRange; i++) {
this.ticks.push(
// this.left, this.top, this.right, and this.bottom have been defined
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
- var valueWidth = innerWidth / Math.max((this.ticks.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
+ var valueWidth = innerWidth / Math.max(this.ticks.length - 1, 1);
var valueOffset = (innerWidth * decimal) + this.paddingLeft;
- if (this.options.gridLines.offsetGridLines && includeOffset) {
- valueOffset += (valueWidth / 2);
- }
-
return this.left + Math.round(valueOffset);
} else {
return this.top + (decimal * (this.height / this.ticks.length));
// Functions needed for bar charts
calculateBaseWidth: function() {
- return (this.getPixelForValue(null, this.ticks.length / 100, 0, true) - this.getPixelForValue(null, 0, 0, true)) - (2 * this.options.categorySpacing);
+ return (this.getPixelForValue(null, this.smallestLabelSeparation / this.tickRange, 0, true) - this.getPixelForValue(null, 0, 0, true)) - (2 * this.options.categorySpacing);
},
calculateBarWidth: function(barDatasetCount) {
//The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
calculateBarX: function(barDatasetCount, datasetIndex, elementIndex) {
var xWidth = this.calculateBaseWidth(),
- xAbsolute = this.getPixelForValue(null, elementIndex, datasetIndex, true) - (xWidth / 2),
+ offset = this.labelMoments[elementIndex].diff(this.firstTick, this.tickUnit, true),
+ xAbsolute = this.getPixelForValue(null, offset / this.tickRange, datasetIndex, true) - (xWidth / 2),
barWidth = this.calculateBarWidth(barDatasetCount);
if (this.options.stacked) {
projects / thirdparty / Chart.js.git / commitdiff
