Reduce one dimension of a array by using sum

Hello,

Can anyone show me how I can reduce one dimension of the following array without using for loops. Thanks!

A=rand(100,100,100);
for ith = 1:100
    for jth = 1:100
    B(ith,jth) = sum(A(ith,:,jth))
    end
end

Answer 1

[Star Strider]

If you are summing across the second dimension of your three-dimension array A, the easiest way would be to use the ‘dim’ argument of sum:

B = squeeze(sum(A,2))

Does this do what you want?

Answer 2

[Azzi Abdelmalek]

 A=rand(100,100,100);
 out=sum(A,3)