Re: subsums

[Dmitri A. Sergatskov]

Gorazd Brumen wrote:
> Hi,
>
> How do you form a vector of subsums of a certain vector without the for 
> loop?
> Example:
> Let x = [1 2 3 4 5 6 7 8 9 10]
> I want to get a vector that would have as entries
> sum([1 2 3 4 5]) and sum ([6 7 8 9 10])?

octave:1> x = [1 2 3 4 5 6 7 8 9 10]
x =

  1   2   3   4   5   6   7   8   9  10

octave:2> y=reshape(x,5,2)
y =

  1   6
  2   7
  3   8
  4   9
  5  10

octave:3> z=sum(y)
z =

 15  40


> Thanks,
> g.

Regards,

Dmitri.
--



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------