[R] duplicate 'row.names' are not allowed

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 28.04.2009 14:33:44:

> Thank you for your reply :)! Is it possible to solve the problem by 
using A.4,
> A.4a, A.9 and A.91? How one cand do this in R?

Yes but why? If you want to have some names A.whatever which can repeat 
itself then does not use it as row names and put it in separate column 
called e.g. mynames. In this column you can have any number of 
replications - if I am not mistaken somebody suggested it already.

You can imagine row.names more like row numbers and in that case you 
probably do not want to have several row numbers let say 42, do you?

Regards
Petr


>  
> Many thanks
> 
> 
> --- S Ellison <S.Ellison at lgc.co.uk> schrieb am Di, 28.4.2009:
> 
> 
> Von: S Ellison <S.Ellison at lgc.co.uk>
> Betreff: Re: [R] duplicate 'row.names' are not allowed
> An: r-help at stat.math.ethz.ch, "amor Gandhi" <amorigandhi at yahoo.de>
> Datum: Dienstag, 28. April 2009, 14:17
> 
> 
> You have used A.4 and A.9 twice.
> 
> Look at 
> > nam
> # or 
> > duplicated(nam)
> 
> 
> >>> amor Gandhi <amorigandhi at yahoo.de> 28/04/2009 13:04:03 >>>
> Hi everyone,
> *á
> I have got the following problem:
> *á
> x1 <- rnorm(10,5,1)
> x2 <- runif(10,0,1)
> nam1 <- paste("A",1:4,sep=".")
> nam2 <- paste("A",6:9,sep=".")
> nam <- c(nam1,"A.4",nam2,"A.9")
> mydata <- data.frame(x1,x2)
> rownames(mydata) <- nam
> Error in `row.names<-.data.frame`(`*tmp*`, value = c("A.1", "A.2", 
"A.3", : 
> duplicate 'row.names' are not allowed
> In addition: Warning message:
> non-unique values when setting 'row.names': *Ç˙A.4*ÇÖ, *Ç˙A.9*ÇÖ
> *á
> I am very thankful for your help!
> *á
> Amor
> 
> 
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