Clarify the difference between row/col usage #233
Description
How could we improve the documentation?
As @svank pointed out, the tutorial example uses row/col both to refer to the position in the small patches and the position in the full image for the functional PSFs. This is very confusing.
I'd suggest renaming it as i_patch and j_patch versus i_image and j_image removing the row and col nomenclature altogether.