What are the pupil outputs?

[alexfaul]

Hey, thanks so much for all the work that went into this! This is an incredibly useful tool and our lab appreciates it.

I've dug around the documentation a bit and can't seem to find what some of the outputs are from the proc.npy file are after processing.

Specifically, what are com, axdir, and axlen with respect to pupil? Thanks!

[maxyccc]

If you examine the source code [facemap/facemap/pupil.py](

facemap/facemap/pupil.py

Line 121 in 97ea2aa

mu, sig, u, sv, _, _ = fit_gaussian(

)):

axdir refers to the axis direction.
axlen represents the axis length.
These axes correspond to the eigenvectors of the Gaussian kernel fitted to the pupil.

Additionally, according to the README, com stands for the center of mass.