[R] Unique rows

[Lanre Okusanya]

Thanks! That worked well

On 8/9/06, Dimitrios Rizopoulos <Dimitris.Rizopoulos at med.kuleuven.be> wrote:
> if you want the first row for the unique 'aa' entries, try the following:
>
> cc[!duplicated(cc$aa), ]
>
>
> I hope it helps.
>
> Best,
> Dimitris
>
> ----
> Dimitris Rizopoulos
> Ph.D. Student
> Biostatistical Centre
> School of Public Health
> Catholic University of Leuven
>
> Address: Kapucijnenvoer 35, Leuven, Belgium
> Tel: +32/(0)16/336899
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>       http://www.student.kuleuven.be/~m0390867/dimitris.htm
>
>
>
> Quoting Lanre Okusanya <lanre.okusanya at gmail.com>:
>
> > hello all,
> >
> > I have a dataset where the subjects are duplicated. How do I subset
> > such that I can get only I row/subject.
> >
> > aa<-c(1,1,2,2,3,3,4,4,5,5,6,6)
> > bb<-c(56,56,33,33,53,53,20,20,63,63,9,9)
> > cc<-data.frame(aa,bb)
> >
> > I would like to subset df(cc) such that I can get
> > aa bb
> > 1 56
> > 2 33
> > 3 53
> > 4 20
> > 5 63
> > 6 9
> >
> > I know this should be fairly easy but I can't figure how to do it in a
> > dataframe and keep all my columns
> >
> > Thanks
> >
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