invalid values detected in nilearn interface

[jdkent]

I also tested a second time with an atlas and lookup table added to see what that output looked like and got a few lines of the error pasted below. I noticed the same error in the sample output on the tutorial pages of the readthedocs site, so maybe these errors can just be ignored? Thanks again for your help!

/opt/miniconda-latest/lib/python3.7/site-packages/nibetaseries/interfaces/nilearn.py:130: RuntimeWarning: invalid value encountered in greater
n_lines = int(np.sum(connmat > 0) / 2)

Originally posted by @sjw42 in #282 (comment)