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.
