'My data array has null values in chart.js. Is there a way to draw a line between the two segments to maintain visual progress?

enter image description here

As shown in the screenshot, there are days where I have a null value... I would like to connect the dataset with a line regardless of a particular day being null. Is this possible in chart.js 2.x?

frontendchart.js


Solution 1:[1]

You can set spangaps to true:

const options = {
  type: 'line',
  data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, null, 2, 3],
        borderColor: 'pink',
        fill: false,
        spanGaps: true
      },
      {
        label: '# of Points',
        data: [7, null, null, 8, 3, 7],
        borderColor: 'orange',
        fill: false,
        spanGaps: true
      }
    ]
  },
  options: {}
}

const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
  <canvas id="chartJSContainer" width="600" height="400"></canvas>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.js"></script>
</body>

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 LeeLenalee

Related Questions