How to check if two samples are from the same distribution, when the variable is cyclic?
A simple answer for non-cyclic variable is the Kolmogorov-Smirnov test. What is the equivalent for cyclic variables? Is there other powerful similar tests specific for cyclic variables?
In my specific case I have two samples of an angle in $[0, 2\pi]$. The two distributions are nearly uniform, but not perfectly.