Try this:
long.prop.table <- function(x) {
x <- as.factor(x)
p = tabulate(x)/length(x)
p[x]
}
Michael Weylandt
On Thu, Sep 22, 2011 at 3:41 PM, Jim Silverton <jim.silver...@gmail.com>wrote:
> >
> > Hi all,
> > I have a vector xm say: xm = c(1,2,3,4,5,5,5,6,6)
> >
> > I want to return a vector with the corresponding probabilities based on
> the
> > amount of times the numbers occurred. For example, I should get the
> > following vector for xm:
> > prob.xm = c(1/9, 1/9, 1/9, 1/9, 3/9, 3/9, 3/9, 2/9, 2/9)
> >
>
> Using prop.table gives:
>
>
> Usage (with table)
>
> > prob.xm <- round( prop.table(table(xm)), digits=3)
> > prob.xm
> xm
> 1 2 3 4 5 6
> 0.111 0.111 0.111 0.111 0.333 0.222
>
> But I want the entire length of probabilities, not just a condensed
> version.
> Any help is greatl appreciated.
>
>
>
> --
> Thanks,
> Jim.
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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>
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