One method is to follow correct usage of base graphics and only use the plot function once for each plot. To overlay, use a function like points or lines.
Another approach is to use lattice graphics or ggplot2 and give the data to higher-level plot routines that know how to plot multiple groups of data together. --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. "Yuan, Rebecca" <rebecca.y...@bankofamerica.com> wrote: >Hello all, > >When I tried to plot the following two arrays in one figure with the >following: > >x = c(0,0,0,10,20,30) >y = c(40,50,60,70,80,90) >plot(x, type='o', ylim=c(min(x),max(x))) >par(new=T) >plot(y, type='l', ylim=c(min(y),max(y))) > >Found that the first points and last points from those two arrays are >overlapping together, but the value 30 is not equal to 90. How could I >draw those two arrays in one plot with their real values shown in the >plot? i.e., x is in the lower part of the plot and y is in the upper >part of the plot. > >Thanks very much! > >Cheers, > >Rebecca > > > >---------------------------------------------------------------------- >This message, and any attachments, is for the intended >r...{{dropped:5}} > >______________________________________________ >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. ______________________________________________ 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.