Sample OPJ to download to try: Polar Graph.opj
(ORG-7889)
Custom Radial axes (ORG-5420, ORG-8184).
To custom radial axis display, go to Radial Axes node and click New Configuration... button, or right click the left panel and select Add/Duplicate/Delete.
Different unit support for Azimuth axis (ORG-2267, ORG-8137)
Flexible Start Angle&Orientation Combination (ORG-1796)
Crop (ORG-5420). To access Crop controls, right-click on the plot and Axis..., then select Miscellaneous in the Axis Dialog box.
New control features in Azimuth grid lines (ORG-1796)
Support From value greater than To in angle axis and show negative labels as positive. (ORG-7892)
Note that when From is greater than To, Major Ticks increment value should also be negative.