Chartjs-How to add space between two scales in chart-js?

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There are 2 things you can do, increase the canvas height so the chart has physicly more space to display so the axis can display more, you can also change to version 3 of the lib where you can set the stepSize dynamicly with a calculation so it gives less ticks en thus bigger space between them

Example:

var options = {
  type: 'line',
  data: {
    labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, 5, 2, 3],
        borderWidth: 1
      },
      {
        label: '# of Points',
        data: [7, 11, 5, 8, 3, 7],
        borderWidth: 1
      }
    ]
  },
  options: {
    scales: {
      y: {
        ticks: {
          stepSize: (c) => ((Math.max(...c.chart.data.datasets[0].data) - Math.min(...c.chart.data.datasets[0].data)) / 2)
        }
      }
    }
  }
}

var 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/3.3.2/chart.js"></script>
</body>

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