On 3/23/2006 10:34 AM, Peter Ehlers wrote: > Duncan Murdoch wrote: >> On 3/23/2006 7:35 AM, Thomas Steiner wrote: >> >>>a) How can I set the recording of all windows()-history forever to >>>"true"? I want something like windows(record = TRUE) but not just for >>>the window that opens then, but for all windows I will open ever. >> >> >> options(graphics.record=TRUE) >> >> will make that happen for the rest of the session. To really make it >> happen forever, you need to put this line in your Rprofile (see >> ?Rprofile for where that comes from). >> >> Watch out though: the graphics history is stored in your current >> workspace in memory, and it can get big. You might find you're running >> out of memory if you store everything, and you'll find your .RData files >> quite large if you save your workspace. >> >> On my todo list (but not for 2.3.0) is the possibility of setting a >> default history length, perhaps defaulting to saving the last 2 or 3 >> pages. > [snip] > > Duncan, > > This may be asking too much, but would it be possible to consider > implementing selective graph removal from the graph history? > I use graph.record=TRUE frequently for comparing graphs, but often > find that I'd like to kill one of the graphs while keeping others > in memory.
That's probably not too hard to do in R code. You just need to look at the source in src/library/grDevices/R/windows/windows.R for the print.SavedPlots method, and maybe the C level code in src/library/grDevices/src/devWindows.c for a bit more help on the interpretation of the .SavedPlots object, and then it should be fairly straightforward to write a function that deletes an entry in the history. (It's a list with 5 components, the first 4 of which describe the current state and what the user is looking at, and the last of which is a list containing the actual recorded plots.) Duncan Murdoch ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html