Form a big 2d array from multiple smaller 2d arrays

Question

The question is the inverse of this question. I\'m looking for a generic method to from the original big array from small arrays:

array([[[ 0,  1,  2],
             


        

Answer 1

It works for the images I tested for now. Will if further tests are made. It is however a solution which takes no account about speed and memory usage.

def unblockshaped(blocks, h, w):
    n, nrows, ncols = blocks.shape
    bpc = w/ncols
    bpr = h/nrows

    reconstructed = zeros((h,w))
    t = 0
    for i in arange(bpr):
        for j in arange(bpc):
            reconstructed[i*nrows:i*nrows+nrows,j*ncols:j*ncols+ncols] = blocks[t]
            t = t+1
    return reconstructed