Hi guys!
In lines 65 and 109 you reshape the data from a 3-dimensional array into a 4-dimensional array with dimensions: [Ly, Lx, nPlanes, nFrames]. Hence, the code crashes if the length of the 3rd dimension is not divisible by nplanes. For example, say you have a tiff file with 2000 frames and you want to sample from 7 planes.