Tyler,
Tried your solution: levels (Data1$Site <- list(Fw = c("AB"), Est = c("DE")))
but still got a NULL response to str(Data1) and an alternating list of Fw, Est,
Fw, Est under Site when looked at in the Data editor in R console. The use of
the "levels" function would seem to be appropriate but tricky to use. Any
other ideas would be welcome.
Regards,
BJ
________________________________
> From: tyler_rin...@hotmail.com
> To: deel...@hotmail.com; r-help@r-project.org
> Subject: RE: [R] Renaming levels of a factor in a dataframe
> Date: Sun, 14 Aug 2011 13:18:12 -0400
>
> Here's an example of relevel used to relevel and combine groups....
>
> InsectSprays2<-InsectSprays
> levels(InsectSprays2$spray)
> levels(InsectSprays2$spray)<-list(new1=c("A","C"),YEPS=c("B","D","E"),LASTLY="F")
>
> levels(InsectSprays2$spray)
> InsectSprays2
>
> So for you try...
> levels (Data1$Site) <- list(Fw =c( "AB"), Est = c("DE"))
>
> > From: deel...@hotmail.com
> > To: r-help@r-project.org
> > Date: Sun, 14 Aug 2011 12:56:25 -0300
> > Subject: [R] Renaming levels of a factor in a dataframe
> >
> >
> >
> > Dear Helplist:
> >
> >
> >
> > I am trying, unsuccessfully, to rename levels of a factor in a
> dataframe. The dataframe consists of two factor variables and one
> numeric variable as follows:
> >
> > Factor Site has 2 levels AB and DE, factor Fish has 30 levels, 15
> associated with each Site e.g. 1-1, 1-2,.....2-1, 2-2.... I am trying
> to rename the levels of factor Site from AB to Fw and DE to Est while
> keeping them as factors. The following 2 approaches do not work, each
> giving a NULL response and creating a character string.
> >
> >
> >
> > levels (Data1$Site <- c("Fw", "Est")) This simply gives an
> alternating list of Fw, Est, Fw, Est... not the desired 15 concurrent
> rows of Fw followed by 15 of Est.
> >
> >
> >
> > #levels (Data1$Site <- list(Fw = "AB", Est = "DE")) This gives the
> same result. I have tried other approaches to no avail. It seems a
> simple problem but has not been so.
> >
> >
> >
> > Any suggestions for solving this problem would be much appreciated.
> >
> >
> >
> > Regards,
> >
> > BJ
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
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