How to insert a column of zero into a 3D matrix?

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Gabrielle Lee
Gabrielle Lee on 30 Mar 2022
Answered: Simon Chan on 30 Mar 2022
A = rand(128,256,36);
B = zeros(128,1);
I would like to concatenate B and A so that C = cat(2,B,A(:,:,1) but for every A(:,:,1), A(:,:,2), ... A(:,:,3).
How can I do this, instead of doing it manually?

Accepted Answer

Simon Chan
Simon Chan on 30 Mar 2022
Try this
C=cat(2,A,repmat(B,1,1,size(A,3)));

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