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Add sample for centered point labels
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# Polar area centered point labels | ||
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```js chart-editor | ||
// <block:actions:2> | ||
const actions = [ | ||
{ | ||
name: 'Randomize', | ||
handler(chart) { | ||
chart.data.datasets.forEach(dataset => { | ||
dataset.data = Utils.numbers({count: chart.data.labels.length, min: 0, max: 100}); | ||
}); | ||
chart.update(); | ||
} | ||
}, | ||
{ | ||
name: 'Add Data', | ||
handler(chart) { | ||
const data = chart.data; | ||
if (data.datasets.length > 0) { | ||
data.labels.push('data #' + (data.labels.length + 1)); | ||
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for (let index = 0; index < data.datasets.length; ++index) { | ||
data.datasets[index].data.push(Utils.rand(0, 100)); | ||
} | ||
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chart.update(); | ||
} | ||
} | ||
}, | ||
{ | ||
name: 'Remove Data', | ||
handler(chart) { | ||
chart.data.labels.splice(-1, 1); // remove the label first | ||
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chart.data.datasets.forEach(dataset => { | ||
dataset.data.pop(); | ||
}); | ||
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chart.update(); | ||
} | ||
} | ||
]; | ||
// </block:actions> | ||
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// <block:setup:1> | ||
const DATA_COUNT = 5; | ||
const NUMBER_CFG = {count: DATA_COUNT, min: 0, max: 100}; | ||
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const labels = ['Red', 'Orange', 'Yellow', 'Green', 'Blue']; | ||
const data = { | ||
labels: labels, | ||
datasets: [ | ||
{ | ||
label: 'Dataset 1', | ||
data: Utils.numbers(NUMBER_CFG), | ||
backgroundColor: [ | ||
Utils.transparentize(Utils.CHART_COLORS.red, 0.5), | ||
Utils.transparentize(Utils.CHART_COLORS.orange, 0.5), | ||
Utils.transparentize(Utils.CHART_COLORS.yellow, 0.5), | ||
Utils.transparentize(Utils.CHART_COLORS.green, 0.5), | ||
Utils.transparentize(Utils.CHART_COLORS.blue, 0.5), | ||
] | ||
} | ||
] | ||
}; | ||
// </block:setup> | ||
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// <block:config:0> | ||
const config = { | ||
type: 'polarArea', | ||
data: data, | ||
options: { | ||
responsive: true, | ||
scales: { | ||
r: { | ||
pointLabels: { | ||
display: true, | ||
centerPointLabels: true, | ||
font: { | ||
size: 18 | ||
} | ||
} | ||
} | ||
}, | ||
plugins: { | ||
legend: { | ||
position: 'top', | ||
}, | ||
title: { | ||
display: true, | ||
text: 'Chart.js Polar Area Chart' | ||
} | ||
} | ||
}, | ||
}; | ||
// </block:config> | ||
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module.exports = { | ||
actions: actions, | ||
config: config, | ||
}; | ||
``` |