Time data with irregular intervals

author(s): Torstein Hønsi

by maritavindedal

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/accessibility.js"></script>


<div id="container"></div>

JavaScript

Highcharts.chart('container', {

  accessibility: {
  	keyboardNavigation: {
    	seriesNavigation: {
      	skipNullPoints: false
      }
    }
  },
  plotOptions: {
		scatter: {
			marker: {
				radius: 5,
				fillColor: '#cccccc',
				symbol: 'circle'
			}
		}
  },
  series: [{
    type: "spline",
    name: 'A',
    id: 'a',
    data: [
      [Date.UTC(1970, 9, 24), 0],
      [Date.UTC(1971, 0, 3), 0.39],
      [Date.UTC(1971, 1, 3), null],
      [Date.UTC(1971, 4, 30), null]
    ]
  }, {
    type: "spline",
    name: 'C',
    id: 'c',
    data: [
      [Date.UTC(1970, 10, 5), 0],
      [Date.UTC(1971, 0, 1), 0.17],
      [Date.UTC(1971, 1, 2), 0.95],
      [Date.UTC(1971, 4, 3), null]
    ]
  }]
});