Re: A vectorization question

[marco atzeri]

On 12/20/2011 11:07 AM, marco atzeri wrote:
> On 12/20/2011 10:53 AM, wrote:
> > Hi,
> >
> > Is there a way of getting rid of this loop in
> >
> > for j=1:n
> > B(:,j)=c(j) * A(:,j);
> > endfor
> >
> > where c is a n-vector and A is a m by n matrix?
> >
> > Regards,
> > ST
>
> Am I missing something or it is just a standard matrix multiplication ?
>
> B=A*c
>
> or use c' depending if its size is nx1 or 1xn
>
> Marco

No, you are asking for a brodcasting as B is same size of A

B=A.*c
on the latest development,

otherwise on 3.4.x
B=A.*repmat(c,m,1)

Regards
Marco