score:1

Accepted answer

I can suggest two solutions:

  • add a second yAxis and set heights for both y-axes:

     yAxis: [{
         height: '50%'
     }, {
         height: '50%',
         top: '50%'
     }],
    

Demo: http://jsfiddle.net/BlackLabel/e0zhmyr7/

API: https://api.highcharts.com/highcharts/yAxis.height

  • change the y values for x-range series in the current implementation

Demo: http://jsfiddle.net/BlackLabel/ow1357tq/


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