You're going about it the wrong way: plot(p, q1) lines(p, q2)
or points(p, q2) depending on what you want it to look like. Sarah On Sun, Oct 11, 2009 at 8:52 PM, Mehdi Khan <mwk...@ucdavis.edu> wrote: > Hey everybody, I have a matrix with three columns. > > I want to plot two columns (independent variable) against one column (the > defendant). This is my code and the error associated with it: > > plot(p, q, data=columns) > >> plot(pprime,q, add=TRUE) > Warning messages: > 1: In plot.window(...) : "add" is not a graphical parameter > 2: In plot.xy(xy, type, ...) : "add" is not a graphical parameter > 3: In axis(side = side, at = at, labels = labels, ...) : > "add" is not a graphical parameter > 4: In axis(side = side, at = at, labels = labels, ...) : > "add" is not a graphical parameter > 5: In box(...) : "add" is not a graphical parameter > 6: In title(...) : "add" is not a graphical parameter > > How do I resolve this problem? > > thanks! -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
