MacQueen, Don
2013-Sep-12 22:54 UTC
[R] failure to replayPlot() a recordedplot object saved in a previous session?
I have the following experience. If I use, for example, tmp <- recordPlot() in a session, then immediately the saved plot replays successfully using replayPlot() in the same session. But not in the next R session. See examples below, copy/pasted from my shell window. The first R session is brand new; no saved objects left over from a previous session. I also have the same experience with R 3.0.1 patched on a linux machine (RHEL). Is this a known or expected behavior? Thanks -Don #### R session #1 mydir[42]% R R version 3.0.1 Patched (2013-08-13 r63562) -- "Good Sport" Copyright (C) 2013 The R Foundation for Statistical Computing Platform: x86_64-apple-darwin10.8.0 (64-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. Natural language support but running in an English locale R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R.> > x11() > plot(1:2) > tmp <- recordPlot() > replayPlot(tmp) > q()Save workspace image? [y/n/c]: y #### R session #2 mydir[43]% R R version 3.0.1 Patched (2013-08-13 r63562) -- "Good Sport" Copyright (C) 2013 The R Foundation for Statistical Computing Platform: x86_64-apple-darwin10.8.0 (64-bit) R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details. Natural language support but running in an English locale R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications. Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. [Previously saved workspace restored]> ls()[1] "tmp"> class(tmp)[1] "recordedplot"> x11() > replayPlot(tmp)Error: NULL value passed as symbol address> > sessionInfo()R version 3.0.1 Patched (2013-08-13 r63562) Platform: x86_64-apple-darwin10.8.0 (64-bit) locale: [1] C attached base packages: [1] stats graphics grDevices utils datasets methods base>-- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062
Paul Murrell
2013-Sep-25 00:35 UTC
[R] failure to replayPlot() a recordedplot object saved in a previous session?
Hi Attempting to use a display list snapshot (as created by recordPlot()) between R sessions has always been strongly discouraged, but as of about R 3.0.0 it has become impossible (due to internal changes, which was part of the reason for strongly discouraging this in the first place). Sorry to be the bearer of bad news. Paul On 09/13/13 10:54, MacQueen, Don wrote:> I have the following experience. > > If I use, for example, > tmp <- recordPlot() > in a session, then immediately the saved plot replays successfully using > replayPlot() > in the same session. But not in the next R session. See examples below, > copy/pasted from my shell window. > > The first R session is brand new; no saved objects left over from a > previous session. > > I also have the same experience with R 3.0.1 patched on a linux machine > (RHEL). > > > Is this a known or expected behavior? > > Thanks > -Don > > > #### R session #1 > > mydir[42]% R > > R version 3.0.1 Patched (2013-08-13 r63562) -- "Good Sport" > Copyright (C) 2013 The R Foundation for Statistical Computing > Platform: x86_64-apple-darwin10.8.0 (64-bit) > > R is free software and comes with ABSOLUTELY NO WARRANTY. > You are welcome to redistribute it under certain conditions. > Type 'license()' or 'licence()' for distribution details. > > Natural language support but running in an English locale > > R is a collaborative project with many contributors. > Type 'contributors()' for more information and > 'citation()' on how to cite R or R packages in publications. > > Type 'demo()' for some demos, 'help()' for on-line help, or > 'help.start()' for an HTML browser interface to help. > Type 'q()' to quit R. > >> >> x11() >> plot(1:2) >> tmp <- recordPlot() >> replayPlot(tmp) >> q() > Save workspace image? [y/n/c]: y > > > > > #### R session #2 > > > mydir[43]% R > > R version 3.0.1 Patched (2013-08-13 r63562) -- "Good Sport" > Copyright (C) 2013 The R Foundation for Statistical Computing > Platform: x86_64-apple-darwin10.8.0 (64-bit) > > R is free software and comes with ABSOLUTELY NO WARRANTY. > You are welcome to redistribute it under certain conditions. > Type 'license()' or 'licence()' for distribution details. > > Natural language support but running in an English locale > > R is a collaborative project with many contributors. > Type 'contributors()' for more information and > 'citation()' on how to cite R or R packages in publications. > > Type 'demo()' for some demos, 'help()' for on-line help, or > 'help.start()' for an HTML browser interface to help. > Type 'q()' to quit R. > > [Previously saved workspace restored] > >> ls() > [1] "tmp" >> class(tmp) > [1] "recordedplot" >> x11() >> replayPlot(tmp) > Error: NULL value passed as symbol address >> >> sessionInfo() > R version 3.0.1 Patched (2013-08-13 r63562) > Platform: x86_64-apple-darwin10.8.0 (64-bit) > > locale: > [1] C > > attached base packages: > [1] stats graphics grDevices utils datasets methods base >> > > >-- Dr Paul Murrell Department of Statistics The University of Auckland Private Bag 92019 Auckland New Zealand 64 9 3737599 x85392 paul at stat.auckland.ac.nz http://www.stat.auckland.ac.nz/~paul/