Welcome to the Highcharts JS (highcharts) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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colorAxis.gridLineInterpolation

Polar charts only. Whether the grid lines should draw as a polygon with straight lines between categories, or as circles. Can be either circle or polygon. Since v8.0.0 this option is also applicable for X axis (inverted polar).