radar-skip-points.html
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<!doctype html>
<html>
<head>
<title>Radar Chart</title>
<script src="../dist/Chart.bundle.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<style>
canvas {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
</style>
</head>
<body>
<div style="width:75%">
<canvas id="canvas"></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>
<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') + ')';
};
var config = {
type: 'radar',
data: {
labels: ["Eating", "Drinking", "Sleeping", "Designing", "Coding", "Cycling", "Running"],
datasets: [{
label: "Skip first dataset",
borderColor: 'rgb(255, 0, 0)',
backgroundColor: "rgba(255,255,0,0.5)",
pointBackgroundColor: "rgba(220,220,220,1)",
data: [NaN, randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
}, {
label: "Skip mid dataset",
borderColor: 'rgb(255, 0, 255)',
backgroundColor: "rgba(0, 255, 0, 0.5)",
pointBackgroundColor: "rgba(151,187,205,1)",
hoverPointBackgroundColor: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [randomScalingFactor(), randomScalingFactor(), NaN, randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
},{
label: "Skip last dataset",
borderColor: 'rgb(0, 255, 255)',
backgroundColor: "rgba(0, 0, 255, 0.5)",
pointBackgroundColor: "rgba(151,187,205,1)",
hoverPointBackgroundColor: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), NaN]
}]
},
options: {
title:{
display:true,
text:"Chart.js Radar Chart - Skip Points"
},
elements: {
line: {
tension: 0.0,
}
},
scale: {
beginAtZero: true,
reverse: false
}
}
};
window.onload = function() {
window.myRadar = new Chart(document.getElementById("canvas"), config);
};
$('#randomizeData').click(function() {
$.each(config.data.datasets, function(i, dataset) {
dataset.data = dataset.data.map(function() {
return randomScalingFactor();
});
});
window.myRadar.update();
});
$('#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());
}
config.data.datasets.push(newDataset);
window.myRadar.update();
});
$('#addData').click(function() {
if (config.data.datasets.length > 0) {
config.data.labels.push('dataset #' + config.data.labels.length);
$.each(config.data.datasets, function (i, dataset) {
dataset.data.push(randomScalingFactor());
});
window.myRadar.update();
}
});
$('#removeDataset').click(function() {
config.data.datasets.splice(0, 1);
window.myRadar.update();
});
$('#removeData').click(function() {
config.data.labels.pop(); // remove the label first
$.each(config.data.datasets, function(i, dataset) {
dataset.data.pop();
});
window.myRadar.update();
});
</script>
</body>
</html>