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

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?

Answer 1

[Simon Chan]

Try this

C=cat(2,A,repmat(B,1,1,size(A,3)));