Hi R users Imagine this data.frame:>XVar1 Var2 A 22 13 B 5 2 C 12 8 D 1 99 A,B,C,D are the rows names (or index) Is there a way to create a new variable in this data frame which name is Var3 and which contains the rows names: Var1 Var2 Var3 A 22 13 A B 5 2 B C 12 8 C D 1 99 D I tried as.data.frame(array(x, dim(x), dimnames(x))) but it doesn'work Sincerely yours -- View this message in context: http://www.nabble.com/I-want-my-row-name-to-be-a-variable-tp20520180p20520180.html Sent from the R help mailing list archive at Nabble.com.
X$Var3 <- row.names(X) CE.KA wrote:> Hi R users > > Imagine this data.frame: >> X > > Var1 Var2 > A 22 13 > B 5 2 > C 12 8 > D 1 99 > > A,B,C,D are the rows names (or index) > > Is there a way to create a new variable in this data frame > which name is Var3 and which contains the rows names: > > Var1 Var2 Var3 > A 22 13 A > B 5 2 B > C 12 8 C > D 1 99 D > > I tried as.data.frame(array(x, dim(x), dimnames(x))) > but it doesn'work > > Sincerely yours >
#if this doesn't work then swap the rownames... = ... to ...=rownames... a <- data.frame(your.df, rownames(your.df)=Var3) On Sat, Nov 15, 2008 at 5:34 PM, CE.KA <ce.kaya75 at yahoo.fr> wrote:> > Hi R users > > Imagine this data.frame: >>X > > Var1 Var2 > A 22 13 > B 5 2 > C 12 8 > D 1 99 > > A,B,C,D are the rows names (or index) > > Is there a way to create a new variable in this data frame > which name is Var3 and which contains the rows names: > > Var1 Var2 Var3 > A 22 13 A > B 5 2 B > C 12 8 C > D 1 99 D > > I tried as.data.frame(array(x, dim(x), dimnames(x))) > but it doesn'work > > Sincerely yours > > -- > View this message in context: http://www.nabble.com/I-want-my-row-name-to-be-a-variable-tp20520180p20520180.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Stephen Sefick Research Scientist Southeastern Natural Sciences Academy Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis
Dear CE.KA,
Try this:
X=read.table(textConnection("
Var1 Var2
A 22 13
B 5 2
C 12 8
D 1 99"),header=TRUE)
closeAllConnections()
X$Var3<-rownames(X)
X
HTH,
Jorge
On Sat, Nov 15, 2008 at 5:34 PM, CE.KA <ce.kaya75@yahoo.fr> wrote:
>
> Hi R users
>
> Imagine this data.frame:
> >X
>
> Var1 Var2
> A 22 13
> B 5 2
> C 12 8
> D 1 99
>
> A,B,C,D are the rows names (or index)
>
> Is there a way to create a new variable in this data frame
> which name is Var3 and which contains the rows names:
>
> Var1 Var2 Var3
> A 22 13 A
> B 5 2 B
> C 12 8 C
> D 1 99 D
>
> I tried as.data.frame(array(x, dim(x), dimnames(x)))
> but it doesn'work
>
> Sincerely yours
>
> --
> View this message in context:
>
http://www.nabble.com/I-want-my-row-name-to-be-a-variable-tp20520180p20520180.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>
[[alternative HTML version deleted]]