How can I diagonalize a matrix which consists of matrix?

I have a matrix like this.

[[A]; [B]; [C]],

where, [A], [B], [C] are matrix having arbitral size. Actually, the real matrix I'm handling has much bigger size ([A], [B], [C], [D], [E], ... more than 100)

What I want to get is [[A] [0] [0]; [0] [B] [0]; [0] [0] [C]].

here, each [0] has proper matrix size.

I can do this using for-loop but I'd like to find a simpler and faster way.

Could you guys help me please?

Answer 1

[Steven Lord]

Use blkdiag.

[Sinwoo Jeong]

Thank you for your comment. But that function makes me to type blkdiag(A, B, C, D, E, ...). In my case, I have more than 100 matrices. Could you please tell me how I can avoid typing every single matrix name?

[Steven Lord]

Store your matrices in a cell array instead of in individual variables.

C = {magic(5), ones(4), full(gallery('tridiag', 7))}
D = blkdiag(C{:})