[R] VERY SIMPLE QUESTION

[Henrique Dallazuanna]

Try this:

sweep(a, 1, b, '/')

On Fri, Apr 16, 2010 at 2:30 PM, Kathie <kathryn.lord2000 at gmail.com> wrote:
>
> Dear R users,
>
> I am looking for more efficient way to compute the followings
>
> --------------------------------------------------------------------------
>
> a <- matrix(c(1,1,1,1,2,2,2,2),4,2)
> b <- matrix(c(1,2,3,4),4,1)
>
> Eventually, I want to get this matrix, `c`.
>
> c <- matrix(c(1/1,1/2,1/3,1/4,2/1,2/2,2/3,2/4),4,2)
>
> --------------------------------------------------------------------------
>
> In fact, #column of `a` is so big..
>
> Is there a more efficient way to compute this instead of using "apply" or
> something? or "apply" is only way..?
>
> Any suggestion will be greatly appreciated.
>
> Regards,
>
> Kathryn Lord
> --
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O