I'm not so sure the original way I stated my issue was clear enough, so I'll attempt to elaborate a little bit.
I'd like to make a function that is passed the name of a plot object, and a lines/point specification, and graphs them all on the same plot. I don't want to redraw the plot each time, and I don't want the code to have any concept of a "first entry" instantiating the plot with plot() in place of lines(). Ideally, I'd like something to the effect of: plot <- createPlot(main = "Hello World", sub = "tiny, little world", xlim = c(-3, 3), ylim = c(-3, 3)) plot <- addElement(plot, lines(col = 'BLUE', x = c(0, 1, 2, 3), y = c(3, 2, 1, 0))) Hopefully this laid my problem out a little better. Thanks in advance for any help you might be able to offer -John Crepezzi On Sep 19, 10:11 am, Duncan Murdoch <[EMAIL PROTECTED]> wrote: > On 9/19/2008 9:32 AM, john crepezzi wrote: > > > Is it possible to see if a plot is already open before I call lines()? > > I don't think so. You can see if a graphics device is open by looking > at dev.cur(), but I don't think there's a test for plot.new(). I'd just > wrap the call in try() if you're not sure it will work. > > Duncan Murdoch > > ______________________________________________ > [EMAIL PROTECTED] mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guidehttp://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.
