Actually, you appear to have re-assigned your object “colon” (from "c:\\alon.txt") with a character vector of intended row.names.
so use row.names(colon) <-paste("g",c(1:nrow(colon)),sep="") B77S wrote: > > I don't have access to your "alon.txt" file (see ?dput for future posts), > but... > > I'm pretty sure the info you want is not in row.names(colon[1:2]) > > should just be using: > > text(x,y, label = colon[1:20,]) > > ?? > > HTH > > > > baumeist wrote: >> >> Hi, >> I am new to R. >> >> I have a matrix that I have assigned to the object “colon”. >> >>> colon<-read.table("c:\\alon.txt",header=T,row.names=1) >> >> attach(colon) >> names(colon) >> >> The dimenstions are 2000 62. >> >> Each of the 62 columns (titled norm1, norm2, norm3, etc) has 2000 >> different numbers (‘continuous’ values) within it. >> >> I have also assigned a name for each of the 2000 rows of the dataframe >> with a prefix (i.e. g1 …. g2000) using the code (not sure if I did this >> right): >> >>> colon<-paste("g",c(1:nrow(colon)),sep="") >> >> I have plotted the first 20 values from two of the columns(samples). >> >>> x<-c(norm1[1:20]) >> >>> y<-c(norm2[1:20]) >> >>> plot(x,y,type='n',xlab='x norm1 sample',ylab='y norm2 >>> sample',main='Norm1 vs Norm2 - 20 >> genes') >> >>> points(x,y,pch=15,col='blue') >> >> Now I wish to assign labels to each point (above each point (i.e. pos=3) >> in the plot with “g1 to g20 corresponding to each row but I am having >> trouble with this step. >> >> I have tried: >> >>> text(x,y, label = row.names(colon[1:20])) >> >> but nothing happens. >> >> Any suggestions? >> >> Thanks in advance >> MAB >> > -- View this message in context: http://r.789695.n4.nabble.com/adding-labels-to-x-y-points-tp3828461p3828665.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.