> Tom Mulholland has already pointed out that the plotrix package has an > axis.break() function that will draw the break symbol. Your problem is a > combination of plotting two disparate sets of data and getting the > y-axis right. The following is one way to do it, just be careful that > the ylim= and labels= arguments match up. > > y1<-1+rnorm(10)/5 > y2<-3+rnorm(10)/5 > y3<-4+rnorm(10)/5 > y4<-397+rnorm(10)/5 > library(plotrix) > plot(y1,ylim=c(0,10),axes=FALSE,main="Big range plot",ylab="Y values") > points(y2) > points(y3) > box() > axis(2,at=c(1,2,3,4,6,7,8,9),labels=c("1","2","3","4","396","397","398","399")) > axis.break(2,5) > par(new=TRUE) > plot(y4,ylim=c(390,400),axes=FALSE,main="",ylab="",xlab="") >
Thank you very much for the real code. I did almost exactly the same thing. I did not know the new=TRUE option so I used lines(y4-offset, ...). Anyway, the results are the same. The left-right-axes solution is also very interesting. It is actually better if the ranges of lines differ significantly. Thank you again for the help. Bo ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html