[R] Obtaining replicates numbers of a vector

[Henrique Dallazuanna]

Try this:

replicate <- vector("numeric", len=length(x))
replicate[order(x)] <- unlist(sapply(rle(sort(x))$lengths, seq_len))

On 19/12/2007, Eric Lecoutre <ericlecoutre at gmail.com> wrote:
> Dear R-help,
>
> I am trying to have a generic way to assess the replicates in a character
> vector.
> Say that I have the following vector:
>
> x <- c('A','B','A','C','C','B')
>
> I would like to obtain:
>
> replicates <- c(1,1,2,1,2,2)
>
> each number beeing the time we see the corresponding value in x.
>
> Any clever and generic way to obtain that?
>
> Eric
>
>
>
>
> --
> Eric Lecoutre
> Consultant - Business & Decision
> Business Intelligence & Customer Intelligence
>
>        [[alternative HTML version deleted]]
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O