Adjust for NaN values

[shadowfox87]

It would be nice if the functions could be updated to be used for NaN values. There are many times in statistics where vectors have nonrecorded values. I'm currently trying to use the circ_hktest function to do a 2-way ANOVA.

Edit: Nevermind, I just used idx=find(~isnan(var1) & ~isnan(var2)); and then used idx to define the indices in which there are no nan values in both of the variables in which I'm testing. Then it works.