Point Style

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

const config = { type: 'line', data: data, options: { plugins: { legend: { labels: { usePointStyle: true, }, } } } };

const config = {
  type: 'line',
  data: data,
  options: {
    plugins: {
      legend: {
        labels: {
          usePointStyle: true,
        },
      }
    }
  }
};

const DATA_COUNT = 7; const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100}; const data = { labels: Utils.months({count: DATA_COUNT}), datasets: [ { label: 'Dataset 1', data: Utils.numbers(NUMBER_CFG), fill: false, borderColor: Utils.CHART_COLORS.red, backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5), borderWidth: 1, pointStyle: 'rectRot', pointRadius: 5, pointBorderColor: 'rgb(0, 0, 0)' }, ] };

const DATA_COUNT = 7;
const NUMBER_CFG = {count: DATA_COUNT, min: -100, max: 100};
const data = {
  labels: Utils.months({count: DATA_COUNT}),
  datasets: [
    {
      label: 'Dataset 1',
      data: Utils.numbers(NUMBER_CFG),
      fill: false,
      borderColor: Utils.CHART_COLORS.red,
      backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
      borderWidth: 1,
      pointStyle: 'rectRot',
      pointRadius: 5,
      pointBorderColor: 'rgb(0, 0, 0)'
    },
  ]
};

const actions = [ { name: 'Toggle Point Style', handler(chart) { chart.options.plugins.legend.labels.usePointStyle = !chart.options.plugins.legend.labels.usePointStyle; chart.update(); } }, ];

const actions = [
  {
    name: 'Toggle Point Style',
    handler(chart) {
      chart.options.plugins.legend.labels.usePointStyle = !chart.options.plugins.legend.labels.usePointStyle;
      chart.update();
    }
  },
];

Docs

• Data structures (labels)
• Line
• Legend
  • Legend Label Configuration
    • usePointStyle
• Elements
  • Point Configuration
  • Point Styles