save.image() saves the global workspace: it does not save the environments of executing functions. If you want to save the latter, use the 'envir' argument of save().
On Tue, 8 Jan 2008, Hua Li wrote: > Hi, All > > I'm trying to save the workspace as a Check Point for > possible future come back. The "save.image" function > works if the whole coding is in a main function: > > rm(list=ls()) > t = 1 > t = t+1 > print(paste("before",t)) > # [1] "before 2" > save.image("tt.RData") > > t = t+1 > print(paste("after",t)) > # [1] "after 3" > > load("tt.RData") > print(paste("check",t)) > # [1] "check 2" > > As you can see, the value right before I save the > workspace is restored. > > However, if I run the saving inside a function, it > seems that it restores to the vale outside the > function rather than the one before the save command: > > rm(list=ls()) > test.fcn <- function(t=1){ > t = t+1 > print(paste("before",t)) > save.image("tt.RData") > > t = t+1 > print(paste("after",t)) > > load("tt.RData") > print(paste("check",t)) > > } > > t = 1 > test.fcn(t=t) > # [1] "before 2" > # [1] "after 3" > # [1] "check 1" > > So it restores the value before the program enters the > function (t=1), though what I really want is the value > inside the function(t=2). > > Is there anything wrong with the way I use the > "save.image" function? Or is there other command I can > use to reach my goal? > > Thanks a lot! > > Hua > > > > > ____________________________________________________________________________________ > Never miss a thing. Make Yahoo your home page. > > ______________________________________________ > 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. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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.