MATLAB: Subtracting elements in an array

substracting array elements

hi there,
I have an array lets say
 A=[10 9 10; 1 2 3; 4 5 6]
How can create an array like this?
 B=[10-1 9-2 10-3;10-1-4 9-2-5 10-3-6]
thanks in advance!
Nikolas

Best Answer

If I understand correctly what you are asking, this will work:
A=[10 9 10; 1 2 3; 4 5 6]
B = cumsum(-A(2:end,:))+A(1,:)
A =
    10     9    10
     1     2     3
     4     5     6
B =
     9     7     7
     5     2     1
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