Look at: ?axis (try the examples) Further, a nice example I found on this mailing lists archive, from somebody who says this has been asked many times already :)
x <- 1:10 y1 <- 1:10 y2 <- rev(seq(1,1000, length=10)) plot(x,y1,ann=FALSE) axis(2, at=c(2,4,6,8), labels=as.character(c(2,4,6,8))) points(x,y2/100,col="red") axis(4, at=c(2,4,6,8), labels=as.character(c(200, 400, 600, 800))) On Wed, 06 Sep 2006 18:10:33 +0800, gallon li wrote: > Usually the y-axis is shown on the left-hand-side of a graph, is it > possible to artifically creat one more y-axis on the right-hand-side in R? > What is the main reference? Thank you in advance. > > [[alternative HTML version deleted]] > > ______________________________________________ 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 and provide > commented, minimal, self-contained, reproducible code. ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.