[R] Cannot quit R - fame package issue?
dan.slayback at nasa.gov
Tue Nov 18 14:02:09 CET 2008
Thanks very much for the tips. Simply removing .Last did allow me to
exit, and looking at sessionInfo showed that there was a "fame_2.3"
namespace loaded, even without loading the fame package, which I guess
had this remnant code for .Last from a previous version of fame (there
appears to be no .Last in the current version of fame):
R version 2.8.0 (2008-10-20)
attached base packages:
 stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
 "base" "fame" "graphics" "grDevices" "methods" "stats"
So after unloading the namespace fame, and rm(.Last), and re-saving the
workspace, I can now exit without problems - thanks!
Prof Brian Ripley wrote:
> See the help for .Last:
> Immediately _before_ terminating, the function '.Last()' is
> executed if it exists and 'runLast' is true. If in interactive use
> there are errors in the '.Last' function, control will be returned
> to the command prompt, so do test the function thoroughly.
> You can avoid it via arguments to q() (see its help). However, if the
> 'fame' package has been ill-mannered enough to put a .Last in your
> workspace, then you can and should delete it and re-save the workspace.
> I can't see the function "validServerIsRunning" in the current fame
> package, so it may be a legacy of a workspace from an earlier version.
> Packages really should not be using the user's workspace, and in
> particular not setting .Last there. A couple of packages do have
> .Last in their space, but it is not guaranteed that their version will
> be visible: reg.finalizer() is the way to do this in a package.
> On Mon, 17 Nov 2008, Dan Slayback wrote:
>> Hello list member:
>> I've recently had a problem in that I'm unable to quit an R Session.
>> I noticed this after the update to 2.8.0, but I believe I also
>> noticed it on another machine, in the previous version. It occurs on
>> both linux and Mac platforms. It only occurs when I start R in some
>> particular workspaces that have alot of objects in them; it does not
>> occur if I start R in an empty workspace. I dont have to do anything
>> in the workspace after starting R to get this to occur, and no
>> packages are loaded by default. Here's a summary from a Linux
>> $ R
>> R version 2.8.0 (2008-10-20)
>> Copyright (C) 2008 The R Foundation for Statistical Computing
>> ISBN 3-900051-07-0
>> 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]
>>  ".GlobalEnv" "package:stats" "package:graphics"
>>  "package:grDevices" "package:utils" "package:datasets"
>>  "package:methods" "Autoloads" "package:base" > q()
>> Save workspace image? [y/n/c]: n
>> Error in .Last() : could not find function "validServerIsRunning"
>> function ()
>> if (exists("fameRunning") && fameRunning())
>> if (validServerIsRunning())
>> <environment: namespace:fame>
>> As the .Last function is referring to the fame package, I figure it
>> must be something to do with that. There are objects in the workspace
>> that require fame to be loaded, but at this point, I have not loaded
>> the fame package, or accessed those objects. If loaded, the same
>> error occurs when trying to quit.
>> Thanks in advance for any suggestions on how to troubleshoot this.
>> R-help at r-project.org mailing list
>> PLEASE do read the posting guide
>> and provide commented, minimal, self-contained, reproducible code.
Dan Slayback, PhD
Science Systems and Applications, Inc. tel: (301) 614-6687
Biospheric Sciences Branch, Code 614.4 fax: (301) 614-6695
NASA Goddard Space Flight Center dan.slayback at nasa.gov
Greenbelt, MD 20771 or daniel_slayback at ssaihq.com
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