Chart.js/samples/radar.html

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<!doctype html>
<html>
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<head>
<title>Radar Chart</title>
<script src="../Chart.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
</head>
<body>
<div style="width:50%">
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<canvas id="canvas" height="450" width="450"></canvas>
</div>
<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>
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]<div>
<h3>Legend</h3>
<div id="legendContainer">
</div>
</div>
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<script>
var randomScalingFactor = function() {
return Math.round(Math.random() * 100);
};
var randomColorFactor = function() {
return Math.round(Math.random() * 255);
};
var randomColor = function(opacity) {
return 'rgba(' + randomColorFactor() + ',' + randomColorFactor() + ',' + randomColorFactor() + ',' + (opacity || '.3') + ')';
};
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var config = {
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type: 'radar',
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data: {
labels: ["Eating", "Drinking", "Sleeping", "Designing", "Coding", "Cycling", "Running"],
datasets: [{
label: "My First dataset",
backgroundColor: "rgba(220,220,220,0.2)",
pointBackgroundColor: "rgba(220,220,220,1)",
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data: [null, randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
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}, {
label: "My Second dataset",
backgroundColor: "rgba(151,187,205,0.2)",
pointBackgroundColor: "rgba(151,187,205,1)",
hoverPointBackgroundColor: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
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data: [null, randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
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}]
}
};
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function updateLegend() {
$legendContainer = $('#legendContainer');
$legendContainer.empty();
$legendContainer.append(window.myRadar.generateLegend());
}
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window.onload = function() {
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window.myRadar = new Chart(document.getElementById("canvas"), config);
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updateLegend();
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};
$('#randomizeData').click(function() {
$.each(config.data.datasets, function(i, dataset) {
dataset.data = dataset.data.map(function() {
return randomScalingFactor();
});
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});
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window.myRadar.update();
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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.myRadar.addDataset(newDataset);
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updateLegend();
});
$('#addData').click(function() {
if (config.data.datasets.length > 0) {
config.data.labels.push('dataset #' + config.data.labels.length);
for (var index = 0; index < config.data.datasets.length; ++index) {
window.myRadar.addData(randomScalingFactor(), index);
}
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updateLegend();
}
});
$('#removeDataset').click(function() {
window.myRadar.removeDataset(0);
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updateLegend();
});
$('#removeData').click(function() {
config.data.labels.splice(-1, 1); // remove the label first
config.data.datasets.forEach(function(dataset, datasetIndex) {
window.myRadar.removeData(datasetIndex, -1);
});
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updateLegend();
});
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</script>
</body>
</html>