MATLAB: Index multiple elements in a vector using logical indexing

Question

Hi, I want to use logical indexing to "grap" some elements from a vector. Normally if you're only looking for a single element, you could use the "find" function, for example:

A = [1 2 3 4 5 6];

B = 2;

C = [5 6 7 8 9 0]

D = C(find(A==B));

or use something like: D = C(A==B);

But now I am interested in finding multiple elements in A. So B becomes a vector in this case. For example:

A = [1 2 3 4 5 6];

B = [2 4];

C = [5 6 7 8 9 0]

I thought I could do something simular as in the upper case, by writing something like:

D = C(A==B). But apparently this does noet work.

Can anyone help me? Thanks a lot in advance!

Answer 1

Oleg's way is probably faster, but also:

D = C(any(bsxfun(@eq,A.',B),2))