Hi, I use a matrix M of shape (20,25). If I do N=M[18:,18:] I correctly obtain the submatrix of M of shape (2,7). Now, if I do N=M[19:,19:], I expect to have the submatrix of M of shape (1,6) but the shape of N is (6,1). Is there any way to obtain the correct shape in any case ? Thank you very much for your help. Sam