Thanks Henrique, that appeared to work, but now I have another issue. If I add a ylim to the plot then when I plot another line it gets plotted on the wrong scale.
#this works as expected plot(iris[,1],col="red",ylim=c(-10,10)) #plot1 lines(iris[,4],col="black") #this does not par(mfrow=c(2,1)) plot(iris[,1],col="red",ylim=c(-10,10)) #plot1 plot(iris[,3],col="blue") #plot2 #goes on plot2 par(mfg = c(2, 1)) lines(iris[,2],col="pink") #goes on plot 1 par(mfg = c(1, 1)) lines(iris[,4],col="black") -- View this message in context: http://r.789695.n4.nabble.com/plot-focus-tp2272699p2274541.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.