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sample1.html
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sample1.html
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<!DOCTYPE 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">
<link rel="stylesheet" type="text/css" href="style.css">
<title>Chart.js color schemes</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.9.1/chart.js"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-color@3.1.0/dist/d3-color.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-interpolate@3.0.1/dist/d3-interpolate.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-scale-chromatic@3.0.0/dist/d3-scale-chromatic.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/seedrandom/3.0.5/seedrandom.min.js"></script>
<script src="../dist/index.js"></script>
<script>window.ChartColorful || document.write('<script src="https://unpkg.com/chartjs-colorful/dist/index.min.js"><\/script>')</script>
<style>
canvas {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
</style>
</head>
<body>
<div class="content">
<a href="..">Home</a>
<div id="canvas-holder" style="width:100%">
<canvas id="chart" style="max-height: 800px; min-height: 800px;"></canvas>
</div>
<div>
<button class="btn btn-chartjs" id="addDataset">Add Dataset</button>
<button class="btn btn-chartjs" id="changeScheme">Change Scheme</button>
<span id="scheme">default</span>
</div>
<div>
<button class="btn btn-chartjs" id="lineChart">Line Chart</button>
<button class="btn btn-chartjs" id="areaChart">Area Chart</button>
<button class="btn btn-chartjs" id="barChart">Bar Chart</button>
<button class="btn btn-chartjs" id="bubbleChart">Bubble Chart</button>
<button class="btn btn-chartjs" id="scatterChart">Scatter Chart</button>
<button class="btn btn-chartjs" id="pieChart">Pie Chart</button>
<button class="btn btn-chartjs" id="doughnutChart">Doughnut Chart</button>
<button class="btn btn-chartjs" id="polarAreaChart">PolarArea Chart</button>
<button class="btn btn-chartjs" id="radarChart">Rader Chart</button>
</div>
<script>
const { ColorfulPlugin } = ChartColorful;
const { createColors, createRotateLinear, halfTransparent } = ChartColorful.helpers;
const { schemes } = ChartColorful.registries;
Chart.register(ColorfulPlugin);
schemes.add('custom', ['#F00', '#FF0', '#0F0', '#0FF', '#00F', '#F0F']);
const rotateLinear = createRotateLinear('#ff7f7f');
schemes.add('rotate', createColors(rotateLinear, 12, false));
const schemeNames = schemes.names;
function randomScaler() {
return Math.round(Math.random() * 100);
};
function random3d() {
return {
x: randomScaler(),
y: randomScaler(),
r: randomScaler() / 10,
}
}
const labels = ['Data 1', 'Data 2', 'Data 3', 'Data 4'];
function getCreateData(type) {
if (type === 'bubble' || type === 'scatter') return random3d;
return randomScaler
}
function createDataset(i, type) {
return {
label: 'Dataset ' + i,
data: labels.map(getCreateData(type)),
}
}
function createDatasets(count, type) {
const datasets = [];
for (let i = 1; i <= count; i += 1) {
datasets.push(createDataset(i, type));
}
return datasets;
}
var config = {
type: '',
data: {
labels,
datasets: [],
},
options: {
responsive: true,
maintainAspectRatio: false,
title: {
display: false,
},
}
};
function createChart(type) {
Math.seedrandom("ChartColorSchemes");
var ctx = document.getElementById('chart');
config.type = type;
config.data.datasets = createDatasets(2, type);
if(type=='area') {
config.type = 'line';
config.data.datasets.forEach(dataset => dataset.fill = true)
}
const newConfig = JSON.parse(JSON.stringify(config));
window.chart = new Chart(ctx, newConfig);
}
window.onload = () => createChart('line');
document.getElementById('addDataset').addEventListener('click', () => {
const datasets = chart.data.datasets;
datasets.push(createDataset(datasets.length, config.type));
chart.update();
});
let schemeIndex = 0;
document.getElementById('changeScheme').addEventListener('click', () => {
schemeIndex += 1;
if (schemeIndex >= schemeNames.length) {
schemeIndex = 0;
}
const name = schemeNames[schemeIndex];
document.getElementById('scheme').innerText = name;
chart.options.plugins.colorful.colors = name;
chart.update();
});
['line', 'area', 'bar', 'pie', 'bubble', 'doughnut', 'polarArea', 'radar', 'scatter'].forEach((type) => {
document.getElementById(type + 'Chart')?.addEventListener('click', () => {
chart.destroy();
createChart(type);
});
});
</script>
</div>
</body>
</html>