Category "numpy-indexing"

A faster way than "for loop" - Indexing 3d numpy array by 2d array

I have a 3d (3, 2, 3) array and first dimension(3) is flexible it can be any size. arr = np.array( [[[56, 24, 32], [56, 24, 32]], [[51, 27, 72], [51, 27, 7