Iterate through two matrices and get the item with the same index

Hello,

I think this is a very simple problem. I have two matrices e.g.

A =

     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4

B =

     5     5     5     5
     6     6     6     6
     7     7     7     7
     9     9     9     9

Now I need for Matrix A the first index and for the Matrix B the same index, then the second index of A and the second index of B and so on. But i dont know how i can solve this in a double for loop.

I need the item at the index not just the index.

Hope u can help me. Thanks

[Sean de Wolski]

What do you mean by "The first index"?

Can you provide the expected results for A and B above?

[Antonio]

for example if i get the item at index one of matrix A i want at the same index the item of matrix B

like this

for index_A = 1:numelo(A)
for index_B = 1:numelo(B)
end
end

But this isnt right.

Answer 1

[Sean de Wolski]

for ii = 1:numel(A)
  Aii = A(ii)
  Bii = B(ii)
  do_whatever_with(Aii,Bii)
end

[Antonio]

Thank u

Answer 2

[Guillaume]

bsxfun(@somefunction, A, B);

Where somefunction is a function that takes two scalars and returns a scalar.

[Sean de Wolski]

No need for bsxfun if A and B are the same size.

somefunction(A,B)

[Guillaume]

You do, if somefunction operates on scalars