[Scilab-users] row-sum of a hyper-matrix without loop

[Samuel Gougeon]

Le 24/11/2019 à 19:53, fujimoto2005 a écrit :
> Is it posible to get a 2-dimension matrix y(j,k) =Σ_i x(i,j,k) from 3
> dimension hyper- matrix x(i,j,k) without using  k-loop?
> If there is such a way, please teach me.


--> h = grand(4,3,2,"uin",0,3)
  h  =
(:,:,1)
    0.   0.   2.
    2.   3.   3.
    2.   1.   3.
    1.   1.   1.
(:,:,2)
    0.   3.   1.
    2.   0.   1.
    3.   1.   3.
    0.   2.   3.

--> matrix(sum(h,1),-1,size(h,2))
  ans  =
    5.   9.   6.
    5.   5.   8.

Regards

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