Point Style

This sample show how to use the dataset point style in the legend instead of a rectangle to identify each dataset..

Point Style - 图1

Toggle Point Style

config setup actions

  1. const config = {
  2. type: 'line',
  3. data: data,
  4. options: {
  5. plugins: {
  6. legend: {
  7. labels: {
  8. usePointStyle: true,
  9. },
  10. }
  11. }
  12. }
  13. };
  1. const DATA_COUNT = 7;
  2. const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
  3. const data = {
  4. labels: Utils.months({count: DATA_COUNT}),
  5. datasets: [
  6. {
  7. label: 'Dataset 1',
  8. data: Utils.numbers(NUMBER_CFG),
  9. fill: false,
  10. borderColor: Utils.CHART_COLORS.red,
  11. backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
  12. borderWidth: 1,
  13. pointStyle: 'rectRot',
  14. pointRadius: 5,
  15. pointBorderColor: 'rgb(0, 0, 0)'
  16. },
  17. ]
  18. };
  1. const actions = [
  2. {
  3. name: 'Toggle Point Style',
  4. handler(chart) {
  5. chart.options.plugins.legend.labels.usePointStyle = !chart.options.plugins.legend.labels.usePointStyle;
  6. chart.update();
  7. }
  8. },
  9. ];

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