"G Ilhamto" <[EMAIL PROTECTED]> wrote in news:[EMAIL PROTECTED]:
> I want to combine several plots in one graph. > I did this: plot(a1); plot(a2, add=TRUE); ...plot(a5, add=TRUE) > The problem is the more plot we put, the more complex the graph. > Is there any way to label each line; or other way just to make sure I > know which one which? > Try: ?legend This is a worked example taken from Seefeld and Kim's monograph: <http://cran.r-project.org/doc/contrib/Seefeld_StatsRBio.pdf> plot(x,dgamma(x,shape=2,scale=1), type='l',xlab="x", ylab="f(x)", main="Gamma pdf's") lines(x,dgamma(x,shape=2,scale=2),lty=2) lines(x,dgamma(x,shape=2,scale=4),lty=3) lines(x,dgamma(x,shape=2,scale=8),lty=4) legend(x=10,y=.3,paste("Scale=",c(1,2,4,8)),lty=1:4) -- David Winsemius ______________________________________________ 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.