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90 lines
2.1 KiB
Markdown
90 lines
2.1 KiB
Markdown
# Point Style
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This sample shows how to use the dataset point style in the tooltip instead of a rectangle to identify each dataset.
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```js chart-editor
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// <block:actions:2>
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const actions = [
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{
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name: 'Toggle Tooltip Point Style',
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handler(chart) {
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chart.options.plugins.tooltip.usePointStyle = !chart.options.plugins.tooltip.usePointStyle;
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chart.update();
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}
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},
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];
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// </block:actions>
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// <block:setup:1>
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const DATA_COUNT = 7;
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const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
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const data = {
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labels: Utils.months({count: DATA_COUNT}),
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datasets: [
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{
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label: 'Triangles',
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data: Utils.numbers(NUMBER_CFG),
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fill: false,
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borderColor: Utils.CHART_COLORS.red,
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backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
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pointStyle: 'triangle',
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pointRadius: 6,
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},
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{
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label: 'Circles',
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data: Utils.numbers(NUMBER_CFG),
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fill: false,
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borderColor: Utils.CHART_COLORS.blue,
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backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
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pointStyle: 'circle',
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pointRadius: 6,
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},
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{
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label: 'Stars',
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data: Utils.numbers(NUMBER_CFG),
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fill: false,
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borderColor: Utils.CHART_COLORS.green,
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backgroundColor: Utils.transparentize(Utils.CHART_COLORS.green, 0.5),
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pointStyle: 'star',
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pointRadius: 6,
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}
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]
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};
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// </block:setup>
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// <block:config:0>
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const config = {
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type: 'line',
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data: data,
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options: {
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interaction: {
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mode: 'index',
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},
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plugins: {
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title: {
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display: true,
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text: (ctx) => 'Tooltip point style: ' + ctx.chart.options.plugins.tooltip.usePointStyle,
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},
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tooltip: {
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usePointStyle: true,
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}
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}
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}
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};
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// </block:config>
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module.exports = {
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actions: actions,
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config: config,
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};
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```
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## Docs
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* [Data structures (`labels`)](../../general/data-structures.html)
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* [Line](../../charts/line.html)
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* [Tooltip](../../configuration/tooltip.html)
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* `usePointStyle`
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* [Elements](../../configuration/elements.html)
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* [Point Styles](../../configuration/elements.html#point-styles)
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