MATLAB: How to extract matrix elements using index pairs

MATLABmatrix manipulation

Might be a really basic question: Suppose I have a matrix:
>> A = magic(3)
A =
     8     1     6
     3     5     7
     4     9     2
I want to extract the elements A(1,1) and A(2,2). Is there a command to call the elements all at once by specifying a list of index pairs? Something like:
A((1,1);(2,2))
so that the output would be
ans =
     8
     5
I tried
A([1;2],[1;2])
A([1 1; 2 2])
but they both returned a matrix instead of a vector.

Best Answer

r=[1 2];
c=[1 2];
A(sub2ind(size(A),r,c))
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