Conditional Chart Marker Symbol - Javascript highcharts

Javascript examples for highcharts:spline chart

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Description

Conditional Chart Marker Symbol

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <title>Highcharts Demo</title> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
   </head> 
   <body> 
      <script src="https://code.highcharts.com/highcharts.src.js"></script> 
      <div id="container" style="height: 400px"></div> 
      <script type="text/javascript">
var H = Highcharts;/*  ww  w  . ja  va  2s.  co  m*/
H.wrap(H.Series.prototype, 'drawPoints', function(p) {
  const options = this.options;
  const symbolCallback = options.marker && options.marker.symbolCallback;
  const points = this.points;
  if (symbolCallback && points.length) {
    points.forEach(point => {
      const symbol = symbolCallback.call(point);
      if (symbol) {
        point.update({
          marker: {
            symbol: symbol
          }
        }, false)
      }
    })
  }
  p.call(this);
})
H.chart('container', {
  series: [{
    marker: {
      symbolCallback: function() {
        return this.x > 2 ? this.y > 150 ? 'circle' : 'triangle' : 'square';
      }
    },
    data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
  }]
});

      </script>  
   </body>
</html>

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