How to partition matrix?

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Ammy
Ammy 2021-8-8
评论： Ammy 2021-8-8
I have four matrices of same order A,B,C,D
I combined them in one as
E=[A B;C D];
Now how can I get back A,B,C,D with the help of E?

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Walter Roberson
Walter Roberson 2021-8-8
[R,C,~] = size(E);
HR = floor(R/2); HC = floor(C/2);
A = E(1:HR, 1:HC, :);
B = E(1:HR, HC+1:C, :);
C = E(HR+1:R, 1:HC, :);
D = E(HR+1:R, HC+1:C, :);

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