[R] Multiply each column of array by vector component

[Henrique Dallazuanna]

If i understand your question, you can do:

x <- matrix(1:10, 2)
y <- sample(10,5)
apply(x, 1, function(.x)mapply(y, .x, FUN="*"))


On 15/11/2007, M.T.Charemza at warwick.ac.uk <M.T.Charemza at warwick.ac.uk> wrote:
> Hi,
>
> I've got an array, say with i,jth entry = A_ij, and a vector, say with jth
> entry= v_j. I would like to multiply each column of the array by the
> corresponding vector component, i,e. find the array with i,jth entry
>
> A_ij * v_j
>
> This seems so basic but I can't figure out how to do it without a loop.
> Any suggestions?
>
> Michal.
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O