[R] label points on a graph

From: Paul Adams <pma3622_at_yahoo.com>
Date: Sun, 08 Jun 2008 09:45:45 -0700 (PDT)


Hello everyone,
I have a plot and I am wanting to label points as 1 through 20 I have the following code for the plot:
dat<-read.table(file="C:\\Documents and Settings\\Owner\\My Documents\\colon cancer1.txt",header=T,row.names=1) file.show(file="C:\\Documents and Settings\\Owner\\My Documents\\colon cancer1.txt") plot(dat[1:20,1:2],type='p',xlab='normal1',ylab='normal2',main='Two normal samples--first 20 genes',pch=15,col='blue') grid(nx=5,ny=5,col="black",lty="dotted",lwd=2) Do I use the label function text(x,y,names)? If so do I specify to put 1-20 above the points as text(5,5,1:20,pos=3)? Any help would be much appreciated
Paul

      
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