On Dec 7, 2007 4:28 AM, Roger Levy <[EMAIL PROTECTED]> wrote: > I'm interested in writing a function that constructs a new plot on the > current graphics device if no plot exists there yet, but adds lines to > the existing plot if a plot is already there. How can I do this? It > seems to me that the exists() function might be co-opted to do this, but > it's not obvious how.
You might want to look at the ggplot2 package, http://had.co.nz/ggplot2/, which exposes plots as objects that can be easily manipulated. Hadley -- http://had.co.nz/ ______________________________________________ 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.
