How to create big matrix that the item is small matrix

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DoinK
DoinK 2023-5-27
编辑： Matt J 2023-5-27
I wish to create a 252*252 matrix with 21 row and column
every item have 12*12 matrix.
So 12*12 until 21 column and row =matrix 252*252
the main diagnonal is matrix D (12*12), upper diagonal is matrix T (12*12), and the last main diagonal is matrix F.
Manually, it looks like this
%12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12
D T 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 D T 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
...
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 F

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回答（1 个）

Matt J
Matt J 2023-5-27
编辑：Matt J 2023-5-27
See, How to Generate a Block Toeplitz Matrix.
Then replace the last D block with F,
Matrix(end-11:end,end-11:end)=F;

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