apply if else condition on 3d array

Hi,

I want to use a simple if else statement to for three matrices A, B, and C of equal dimenstion (11x12x32). Matrix C=zeros(11,12,32) I'm trying to get the following result: If an elements value in matrix A=0 then the respective element in C should be copied from the respective element in matrix B. If not the elemement in matrix C should remain 0.

I tried wo work with the following code. Yet it doesn't work: C=zeros(11,12,32);

if A==0 C=B; else C=0; end

Any advice? Thank you so much in advance.

Answer 1

[Mischa Kim]

Christoph, use

 C = bsxfun(@times,B,A==0)

Answer 2

[Andrei Bobrov]

l = A == 0;
C(t) = B(t);