pairwise_nonparametric()

[michalkahle]

Hi, I was looking for non-parametric pairwise tests and only found the parameter parametric=False of the pairwise_ttests() after some time from the flowcharts. This seems confusing to me. I'd suggest adding function pairwise_nonparametric() for this purpose mainly because of discoverability and clarity. Also pls note that the documentation to pairwise_ttests() just says: "Pairwise T-tests.". I'd be happy to prepare PR if that helps.

[raphaelvallat]

Hi @michalkahle,

Thanks for opening the issue. I am more in favor of improving the current documentation rather than creating a whole new function. The reason for that is that the pairwise_ttests function is one of the longest / more complicated function in Pingouin, and I think it would be messy to duplicate 99% of it just to eventually change one line of code related to which lower-level test we're using.

We might also think about a potential function renaming, e.g. pairwise_tests.

Thanks,
Raphael

[michalkahle]

I thought about creating a new function but just calling the old one with
parametric=False. But I like renaming it to pairwise_tests even better.
The pairwise_ttests would be retained but just give a deprecation warning
and call pairwise_tests. Documentation would be updated to reflect the
various tests that could be performed in pairwise fashion. What do you
think?

[raphaelvallat]

That sounds great!

[raphaelvallat]

To implement in the next major release (0.6.0)?

[michalkahle]

Ok, working on the PR.