[R] label points on a graph

Paul Adams
2008-06-08T16:45:45Z

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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