You seem to be confusing several issues. First, being object oriented does not mean that it matches C++ syntax or that every object is guarenteed to have specific methods. What lead you to think that a recordedplot would have a metafile method? Nothing else has that method, and the only function I find with metafile is the win.metafile graphics device.
The difference between SavedPlots and recordedPlot is the same as the difference between "flock" and "sheep" when talking about a flock of sheep. A recordedPlot object is a single plot, a SavedPlots object is a group of recordedPlot objects (not the plural vs. singular). Look at the help for "objects" or "ls" (?ls) and look at the 'all.names' argument to see how to find .SavedPlots R does not use object.method for method dispatch, trying that is confusing the parser and that is why you get an error. Try method(object) instead. Also recognize that R follows the philosophy of "Source is Real". For what you are trying to do, it will probably work better to write a script or function that creates your plots, then rerun the code when you want the plots again. The current mechanism is useful for a quick paging through plots, but was not meant for much more. -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Beck, Kenneth (STP) > Sent: Monday, April 21, 2008 4:10 PM > To: r-help@r-project.org > Subject: [R] Use of recordPlot > > I am trying to save plots that I create using calls to > windows() folowed by multiple calls to plot to place several > plots on a page. I want to store the plots as variables to be > able to recall them later. > The documentation states: > "Recorded plot histories are of class "SavedPlots". They have > a print method, and a subset method. > As the individual plots are of class "recordedplot" they can > be replayed by printing them: see recordPlot. > The active plot history is stored in variable .SavedPlots in > the workspace." > > But what does this mean "class SavedPlots"? Is class similar > to a class in C++? > Where are the plot() and metafile(), etc methods for this class? > And if it is saved as a SavedPlots class, then what is a > "recordedplot" > class? > Why the two names? Finally, the .SavedPlots does not appear > in my workspace at all. > Where did it go? > > Here is a code snippet, why does this not work: > windows(); > nf1 <- layout(matrix(1), widths=lcm(6), heights=lcm(6)) > par(mfrow=c(2,2)); par (mfg=c(1,1)); plot( ...some stuff...); > par (mfg=c(1,2); plot(....some more stuff...) par > (mfg=c(2,1); plot(....some more stuff...) par (mfg=c(2,2); > plot(....some more stuff...) > > plot_save=recordPlot(); > > # now some more code, doing other stuff, maybe more plots # > now try to replay the saved plot: > > replayPlot(plot_save) > > This last line gives the following error: > Error in replayPlot(plot_save) : > A clipboard metafile can store only one figure. > > The documentation says that replayPlot() has a print method, > so let's try that: we get the following error: > Error: unexpected symbol in "replayPlot(lm_hr_plot).print" > > Can someone help me understand this, and get routines to save > and replay plots? > > Thanks in advance... > ______________________________________________ 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.