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Docs/Add sample for centered point labels (#10013)
* Add sample for centered point labels * update chart title * link to sample for more clarity from property
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| # Polar area centered point labels | ||
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|
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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)); | ||
| } | ||
|
|
||
| chart.update(); | ||
| } | ||
| } | ||
| }, | ||
| { | ||
| name: 'Remove Data', | ||
| handler(chart) { | ||
| chart.data.labels.splice(-1, 1); // remove the label first | ||
|
|
||
| chart.data.datasets.forEach(dataset => { | ||
| dataset.data.pop(); | ||
| }); | ||
|
|
||
| chart.update(); | ||
| } | ||
| } | ||
| ]; | ||
| // </block:actions> | ||
|
|
||
| // <block:setup:1> | ||
| const DATA_COUNT = 5; | ||
| const NUMBER_CFG = {count: DATA_COUNT, min: 0, max: 100}; | ||
|
|
||
| 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> | ||
|
|
||
| // <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 With Centered Point Labels' | ||
| } | ||
| } | ||
| }, | ||
| }; | ||
| // </block:config> | ||
|
|
||
| module.exports = { | ||
| actions: actions, | ||
| config: config, | ||
| }; | ||
| ``` |