extract_block_diag

typhon.utils.extract_block_diag(M, n)

Extract diagonal blocks from square Matrix.

Parameters:

• M (np.array) – Square matrix.

• n (int) – Number of blocks to extract.

Example

>>> foo = np.array([[ 1.,  1.,  0.,  0.],
... [ 1.,  1.,  0.,  0.],
... [ 0.,  0.,  2.,  2.],
... [ 0.,  0.,  2.,  2.]])
>>> extract_block_diag(foo, 2)
[array([[ 1.,  1.],
        [ 1.,  1.]]), array([[ 2.,  2.],
        [ 2.,  2.]])]