[R] Obtaining replicates numbers of a vector

[jim holtman]

Here is another way of doing it:

> x <- c('A','B','A','C','C','B')
> ave(rep(1, length(x)), x, FUN=cumsum)
[1] 1 1 2 1 2 2
>


On Dec 19, 2007 5:36 AM, 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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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?