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Cumulative sum for a vector

Asked by Teemu

Teemu (view profile)

on 2 Mar 2013

I have vector 1x5 (1,5,3,2,8) and I like to do cumulative sum of that. So the answer should seems like (6,9,11,19). Can you help me how to do it without loop?

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Teemu

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1 Answer

Answer by Wayne King

Wayne King (view profile)

on 2 Mar 2013
Edited by Wayne King

Wayne King (view profile)

on 2 Mar 2013
Accepted answer
 x =  [1,5,3,2,8];
 cumsum(x)

but the first element is 1, not 6 as you have indicated. Of course, if you don't want that first element, you can do:

 x = [1,5,3,2,8];
 y = cumsum(x);
 y = y(2:end);

1 Comment

Teemu

Teemu (view profile)

on 2 Mar 2013

Thanks, it was simple solution!

Wayne King

Wayne King (view profile)

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