valueAxis.reverse Boolean (default: false)

If set to true the value axis direction will be reversed. By default categories are listed from left to right and from bottom to top.

Important A reverse value axis is not supported for radar and polar charts.

Example - reverse the value axis

<div id="chart"></div>
  valueAxis:  {
    categories: ["2012", "2013"],
    reverse: true
  series: [
    { data: [1, 2, 3] }
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