chart.js
Version:
Simple HTML5 charts using the canvas element.
130 lines (108 loc) • 2.97 kB
HTML
<html lang="en-US">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Scriptable > Bubble | Chart.js sample</title>
<link rel="stylesheet" type="text/css" href="../style.css">
<script src="../../dist/Chart.js"></script>
<script src="../utils.js"></script>
</head>
<body>
<div class="content">
<div class="wrapper"><canvas id="chart-0"></canvas></div>
<div class="toolbar">
<button onclick="randomize(this)">Randomize</button>
<button onclick="addDataset(this)">Add Dataset</button>
<button onclick="removeDataset(this)">Remove Dataset</button>
</div>
</div>
<script>
var DATA_COUNT = 16;
var MIN_XY = -150;
var MAX_XY = 100;
var presets = window.chartColors;
var utils = Samples.utils;
utils.srand(110);
function colorize(opaque, context) {
var value = context.dataset.data[context.dataIndex];
var x = value.x / 100;
var y = value.y / 100;
var r = x < 0 && y < 0 ? 250 : x < 0 ? 150 : y < 0 ? 50 : 0;
var g = x < 0 && y < 0 ? 0 : x < 0 ? 50 : y < 0 ? 150 : 250;
var b = x < 0 && y < 0 ? 0 : x > 0 && y > 0 ? 250 : 150;
var a = opaque ? 1 : 0.5 * value.v / 1000;
return 'rgba(' + r + ',' + g + ',' + b + ',' + a + ')';
}
function generateData() {
var data = [];
var i;
for (i = 0; i < DATA_COUNT; ++i) {
data.push({
x: utils.rand(MIN_XY, MAX_XY),
y: utils.rand(MIN_XY, MAX_XY),
v: utils.rand(0, 1000)
});
}
return data;
}
var data = {
datasets: [{
data: generateData()
}, {
data: generateData()
}]
};
var options = {
aspectRatio: 1,
legend: false,
tooltips: false,
elements: {
point: {
backgroundColor: colorize.bind(null, false),
borderColor: colorize.bind(null, true),
borderWidth: function(context) {
return Math.min(Math.max(1, context.datasetIndex + 1), 8);
},
hoverBackgroundColor: 'transparent',
hoverBorderColor: function(context) {
return utils.color(context.datasetIndex);
},
hoverBorderWidth: function(context) {
var value = context.dataset.data[context.dataIndex];
return Math.round(8 * value.v / 1000);
},
radius: function(context) {
var value = context.dataset.data[context.dataIndex];
var size = context.chart.width;
var base = Math.abs(value.v) / 1000;
return (size / 24) * base;
}
}
}
};
var chart = new Chart('chart-0', {
type: 'bubble',
data: data,
options: options
});
function randomize() {
chart.data.datasets.forEach(function(dataset) {
dataset.data = generateData()
});
chart.update();
}
function addDataset() {
chart.data.datasets.push({
data: generateData()
});
chart.update();
}
function removeDataset() {
chart.data.datasets.shift();
chart.update();
}
</script>
</body>
</html>