[R] Adding row name to dataframe

[Pedersen Jon]

Tim,
The row names have only one dimension,  so for example
row.names(xy)[11]<-"New rname"
will work
best,
Jon

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Tim Clark
Sent: 27. september 2010 04:41
To: r-help at r-project.org
Cc: tim_clark at nps.gov
Subject: [R] Adding row name to dataframe

Dear all,

I am trying to add a value to a dataframe and name the row with a number.  I 
have tried row.name, rowname, and attr(x,"row.names") but none seem to work.  It 
seems like it should be simple, so not sure why I can't get it to work.  Any 
suggestions?

Thanks,

Tim



x<-seq(1,20,2)
y<-seq(20,1,-2)
xy<-data.frame(x,y)
xy<-rbind(xy,c(0,0))

#Threeattempts that fail
row.names(xy[11,])<-c("12")
rownames(xy[11,])<-c("12")
attr(xy[11,], "row.names")<-c("12")


 Tim Clark

Marine Ecologist
National Park of American Samoa




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