I don't have access to your "alon.txt" file (see ?dput for future posts), but...
I'm pretty sure info you want isn't in row.names(colon[1:2]) it should just be 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-tp3828461p3828545.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.