MATLAB: Divide a square matix with given rows or column index

Question

Hi,

I have a square matix of size 10 x 10. I want to partition it by using given index of two rows and columns e.g. 2, 7. In that way, I will have seveal blocks of matrices. How do I get it?

Answer 1

Let's say your matrix is A.

>> blocks = mat2cell(A,[2,8],[2,8])
blocks =
  2×2 cell array
    {2×2 double}    {2×8 double}
    {8×2 double}    {8×8 double}