mirror of
https://github.com/chartjs/Chart.js.git
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165 lines
5.1 KiB
HTML
165 lines
5.1 KiB
HTML
<!doctype html>
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<html>
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<head>
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<title>Time Scale Point Data</title>
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<script src="../node_modules/moment/min/moment.min.js"></script>
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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="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: 'line',
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data: {
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datasets: [{
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label: "Dataset with point data",
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data: [{
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x: "12/31/2014 06:00",
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y: randomScalingFactor()
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}, {
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x: "01/04/2015 13:00",
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y: randomScalingFactor()
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}, {
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x: "01/07/2015 01:15",
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y: randomScalingFactor()
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}, {
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x: "01/15/2015 01:15",
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y: randomScalingFactor()
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}],
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fill: false
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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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time: {
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format: 'MM/DD/YYYY HH:mm',
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// round: 'day'
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},
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scaleLabel: {
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show: true,
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labelString: 'Date'
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}
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}, ],
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yAxes: [{
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display: true,
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scaleLabel: {
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show: true,
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labelString: 'value'
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}
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}]
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},
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elements: {
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line: {
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tension: 0.3
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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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$.each(config.data.datasets, function(i, dataset) {
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dataset.data = dataset.data.map(function() {
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return randomScalingFactor();
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});
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});
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window.myLine.update();
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updateLegend();
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});
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$('#addData').click(function() {
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if (config.data.datasets.length > 0) {
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var newTime = myLine.scales['x-axis-0'].labelMoments[0][myLine.scales['x-axis-0'].labelMoments[0].length - 1]
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.clone()
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.add(1, 'day')
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.format('MM/DD/YYYY HH:mm');
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for (var index = 0; index < config.data.datasets.length; ++index) {
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config.data.datasets[index].data.push({
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x: newTime,
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y: 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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});
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$('#removeData').click(function() {
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config.data.datasets.forEach(function(dataset, datasetIndex) {
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dataset.data.pop();
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});
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window.myLine.update();
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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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