scikit-image/scikit-image — pull request #1146 by blink1073 (2014-09-12 11:22:07+00:00)
Title: Fix swirl docstring to be less confusing about pixel coordinates.

As discussed in #1140, the old nomenclature was confusing. This is the only place a `grep -irn "(x,y)" .` turned up a docstring. There are others found by `grep -irn "(x, y)" .`, but I figured this was a start.