Try this:
merge(data.frame(P1), data.frame(PC), by.x=1, by.y=1)
On 13/02/2008, My Coyne <[EMAIL PROTECTED]> wrote:
> R-newbie question
>
>
>
> I have 2 matrices
>
> (a) P1 has only one column of 32K rows
>
> (b) PC has 2 column {P, C} of 3200 rows
>
>
>
> Every values in P1 matches with a value in PC[,p] (column p). I would like
> to use Which to search for all value in P1 that matchex PC[,p] and get the
> PC[,c]. However because P1 and PC does not have the same number of rows, I
> got lots of 'NA'. Thanks for your help.
>
>
>
> Example..
>
>
>
> P1 <- {'p001', 'p001', 'p002', 'p010'..}
>
> PC <- { c('p001','class a'), c('p002', 'class b'),.. , c('p010', 'class
> 10')}
>
>
>
> Result <- {c('p001', 'class a'), c('p001', 'class a'), c ('p002', 'class
> b'), c('p010', 'class 10')...}
>
>
>
>
>
> My D. Coyne
>
>
>
>
>
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O
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