Interpolation Modes

const config = { type: 'line', data: data, options: { responsive: true, plugins: { title: { display: true, text: 'Chart.js Line Chart - Cubic interpolation mode' }, }, interaction: { intersect: false, }, scales: { x: { display: true, title: { display: true } }, y: { display: true, title: { display: true, text: 'Value' }, suggestedMin: -10, suggestedMax: 200 } } }, };

const config = {
  type: 'line',
  data: data,
  options: {
    responsive: true,
    plugins: {
      title: {
        display: true,
        text: 'Chart.js Line Chart - Cubic interpolation mode'
      },
    },
    interaction: {
      intersect: false,
    },
    scales: {
      x: {
        display: true,
        title: {
          display: true
        }
      },
      y: {
        display: true,
        title: {
          display: true,
          text: 'Value'
        },
        suggestedMin: -10,
        suggestedMax: 200
      }
    }
  },
};

const DATA_COUNT = 12; const labels = []; for (let i = 0; i < DATA_COUNT; ++i) { labels.push(i.toString()); } const datapoints = [0, 20, 20, 60, 60, 120, NaN, 180, 120, 125, 105, 110, 170]; const data = { labels: labels, datasets: [ { label: 'Cubic interpolation (monotone)', data: datapoints, borderColor: Utils.CHART_COLORS.red, fill: false, cubicInterpolationMode: 'monotone', tension: 0.4 }, { label: 'Cubic interpolation', data: datapoints, borderColor: Utils.CHART_COLORS.blue, fill: false, tension: 0.4 }, { label: 'Linear interpolation (default)', data: datapoints, borderColor: Utils.CHART_COLORS.green, fill: false } ] };

const DATA_COUNT = 12;
const labels = [];
for (let i = 0; i < DATA_COUNT; ++i) {
  labels.push(i.toString());
}
const datapoints = [0, 20, 20, 60, 60, 120, NaN, 180, 120, 125, 105, 110, 170];
const data = {
  labels: labels,
  datasets: [
    {
      label: 'Cubic interpolation (monotone)',
      data: datapoints,
      borderColor: Utils.CHART_COLORS.red,
      fill: false,
      cubicInterpolationMode: 'monotone',
      tension: 0.4
    }, {
      label: 'Cubic interpolation',
      data: datapoints,
      borderColor: Utils.CHART_COLORS.blue,
      fill: false,
      tension: 0.4
    }, {
      label: 'Linear interpolation (default)',
      data: datapoints,
      borderColor: Utils.CHART_COLORS.green,
      fill: false
    }
  ]
};

Docs

• Line
  • cubicInterpolationMode
  • Line Styling (tension)