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## Re: adding vectors and matrices

**From**: |
Ted Harding |

**Subject**: |
Re: adding vectors and matrices |

**Date**: |
Fri, 22 Aug 1997 10:22:20 +0100 (GMT+0100) |

( Re Message From: Andreas Heitmann )
>* *
>* I'm using octave for some time now, but I'm still wondering if there*
>* is a simple way to add a fixed column vector to a number of other*
>* column vectors stored in a matrix. Currently i'm using a loop like the*
>* following:*
>* *
>* v=[1;2;3];*
>* for i=1:columns(x)*
>* y(:,i)=x(:,i)+v;*
>* endfor*
>* *
>* Is it possible to compute y without a loop statement?*
Hi,
y = x + v*ones(1,columns(x));
will do it. I understand John Eaton plans to incorporate a syntax like
y = x .+ v
for a future release which will do the same thing (and the corresponding
thing if v is a row vector with as many elements as x has columns, i.e.
add v to each row of x).
Best wishes,
Ted. (address@hidden)