To my horror as Guardian of the Dimensions, I discovered yesterday that we have *no* n-dimensional edge filters in scikit-image! I was preparing to give a workshop and update the 3D image processing example when I found this.

I’ll submit a PR soon but the outcome was clean enough that I wanted to share with you ahead of time my n-dimensional Sobel filter here:

(search for "def sobel”).

I want to allow an axis= kwarg and then replace our 2D implementations with calls to this one. =D Many of our other filters are similarly generalisable.

Juan.