one way would be:
mapply(tapply, iris[,1:4], MoreArgs=list(iris[,5], mean))

K

On Thu, Aug 7, 2008 at 2:01 PM, glaporta <glaporta@freeweb.org> wrote:

>
> Hi folk,
> I tried this and it works just perfectly
> tapply(iris[,1],iris[5],mean)
> but, how to obtain a single table from multiple variables?
> In tapply x is an atomic object so this code doesn't work
> tapply(iris[,1:4],iris[5],mean)
>
> Thanx and great summer holidays
> Gianandrea
> --
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