Per Bak wrote: >How do I plot using multiple(2) y-axes? >I have two series that use the same x-data, but have very different scales.
I don't know, it that is the only, or even the best way to do it, but I plot with multiple Y-axes using the grid package. The problem I have found is that you have to start using a completely new syntax for plotting Morten example: # ywtext and yrtext are initialized to the text to be plotted at # the 1st and 2nd Y axes grid.newpage() #1st series, scale 0 - 500: push.viewport(viewport(yscale=c(0,500),w=.75,h=.75,xscale=xscale)) grid.points(unit(hillesoy$date,"native"), unit(hillesoy$value,"native"),size=unit(3,"mm"),gp=gp.sw) grid.xaxis(at=c(1990:2003),gp=gp.axis) grid.yaxis(main=FALSE,gp=gp.axis) grid.text(ywtext,x=unit(2004.8,"native"),rot=270, gp=gp.text) #2nd series, scale 0-250 push.viewport(viewport(yscale=c(0,250),xscale=xscale)) grid.lines(unit(sellafield$year,"native"), unit(sellafield$amount,"native"),gp=gp.sella) grid.yaxis(at=c(0,50,100,150,200,250),main=TRUE,gp=gp.axis) grid.text(yrtext,x=unit(1988.3,"native"),rot=270, ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help