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Replicate matrix elements without for loop

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I am trying to take the matrix
base =[1 2; 3 4]
and replicate the elements to give
expn = [ 1 1 2 2; 1 1 2 2; 3 3 4 4; 3 3 4 4]
without using for loops. I would like to use repmat but not sure how to do that elementwise.

Accepted Answer

David Hill
David Hill on 22 Nov 2022
base =[1 2; 3 4];
repelem(base,2,2)
ans = 4×4
1 1 2 2 1 1 2 2 3 3 4 4 3 3 4 4

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