matrix indexing without loop

Hello,

Suppose I have two matrices, A and B:

 A = [2 3 1 4;
      1 4 1 3];

 B = [1 2 3 4;
      4 3 2 1];

Now I get the max indices for the matrix A:

 [~,ind] = max(A,[],2);

I want to obtain the corresponding values of matrix B with ind:

 for ii = 1:2
  v(ii) = B(ii,ind(ii));
 end

How to get the values of B without a for loop?

Answer 1

[Walter Roberson]

v = B(sub2ind(size(B), 1:size(B,1), ind))

[mcdull hall]

By the way, it should be:

 v = B(sub2ind(size(B), (1:size(B,1))', ind))

Thanks.