Grid Configuration

This sample shows how to use scriptable grid options for an axis to control styling. In this case, the Y axis grid lines are colored based on their value. In addition, booleans are provided to toggle different parts of the X axis grid visibility.

// Change these settings to change the display for different parts of the X axis // grid configuiration const DISPLAY = true; const BORDER = true; const CHART_AREA = true; const TICKS = true; const config = { type: 'line', data: data, options: { responsive: true, plugins: { title: { display: true, text: 'Grid Line Settings' } }, scales: { x: { grid: { display: DISPLAY, drawBorder: BORDER, drawOnChartArea: CHART_AREA, drawTicks: TICKS, } }, y: { grid: { drawBorder: false, color: function(context) { if (context.tick.value > 0) { return Utils.CHART_COLORS.green; } else if (context.tick.value < 0) { return Utils.CHART_COLORS.red; } return '#000000'; }, }, } } }, };

// Change these settings to change the display for different parts of the X axis
// grid configuiration
const DISPLAY = true;
const BORDER = true;
const CHART_AREA = true;
const TICKS = true;
const config = {
  type: 'line',
  data: data,
  options: {
    responsive: true,
    plugins: {
      title: {
        display: true,
        text: 'Grid Line Settings'
      }
    },
    scales: {
      x: {
        grid: {
          display: DISPLAY,
          drawBorder: BORDER,
          drawOnChartArea: CHART_AREA,
          drawTicks: TICKS,
        }
      },
      y: {
        grid: {
          drawBorder: false,
          color: function(context) {
            if (context.tick.value > 0) {
              return Utils.CHART_COLORS.green;
            } else if (context.tick.value < 0) {
              return Utils.CHART_COLORS.red;
            }
            return '#000000';
          },
        },
      }
    }
  },
};

const DATA_COUNT = 7; const data = { labels: Utils.months({count: DATA_COUNT}), datasets: [ { label: 'Dataset 1', data: [10, 30, 39, 20, 25, 34, -10], fill: false, borderColor: Utils.CHART_COLORS.red, backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5), }, { label: 'Dataset 2', data: [18, 33, 22, 19, 11, -39, 30], fill: false, borderColor: Utils.CHART_COLORS.blue, backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5), } ] };

const DATA_COUNT = 7;
const data = {
  labels: Utils.months({count: DATA_COUNT}),
  datasets: [
    {
      label: 'Dataset 1',
      data: [10, 30, 39, 20, 25, 34, -10],
      fill: false,
      borderColor: Utils.CHART_COLORS.red,
      backgroundColor: Utils.transparentize(Utils.CHART_COLORS.red, 0.5),
    },
    {
      label: 'Dataset 2',
      data: [18, 33, 22, 19, 11, -39, 30],
      fill: false,
      borderColor: Utils.CHART_COLORS.blue,
      backgroundColor: Utils.transparentize(Utils.CHART_COLORS.blue, 0.5),
    }
  ]
};

const actions = [ { name: 'Randomize', handler(chart) { chart.data.datasets.forEach(dataset => { dataset.data = Utils.numbers({count: chart.data.labels.length, min: -100, max: 100}); }); chart.update(); } }, ];

const actions = [
  {
    name: 'Randomize',
    handler(chart) {
      chart.data.datasets.forEach(dataset => {
        dataset.data = Utils.numbers({count: chart.data.labels.length, min: -100, max: 100});
      });
      chart.update();
    }
  },
];

Docs

• Line
• Options
  • Scriptable Options
    • Tick Context
• Data structures (labels)
• Axes Styling
  • Grid Line Configuration