[R] Problem quitting

[peter dalgaard]

On Apr 4, 2013, at 13:33 , Prof Brian Ripley wrote:

> On 04/04/2013 12:17, peter dalgaard wrote:
>> 
>> On Apr 3, 2013, at 23:58 , Julian Wells wrote:
>> 
>>> Can someone explain why all of a sudden I can't quit?
>> 
>> Almost certainly because you have a .Last function that fails. Either get rid of it, or try q("n", runLast=FALSE).
> 
> I don't think so.  This seems to be R.app on a Mac, and that has a custom q() function.  Now q("n") is never valid, but the R.app version does not tell you so.
> 
I never noticed that... However, q("no") should work. I also forgot that q() doesn't use match.arg() (did it ever?).

> As it says, it is a permission issue when trying to save.

Yes, so changing working directory to somewhere non-writable might cause it. That's the more likely scenario, I agree.

(I'm not completely ruling out .Last(). A colleague of mine uses a .Last() to save what goes on in class to his USB stick, but if he accidentally saves his workspace to the hard drive, the unsuspecting next teacher using R on that machine may find himself unable to quit.) 

> 
>> -pd
>> 
>> 
>>> 
>>>> q("n") returns
>>> 
>>> Error in gzfile(file, "wb") : cannot open the connection
>>> In addition: Warning message:
>>> In gzfile(file, "wb") :
>>>  cannot open compressed file '.RDataTmp', probable reason 'Permission denied'
>>> 
>>> I'm running
>>> 
>>> R 2.15.3 GUI 1.53 Leopard build 64-bit
>>> 
>>> on a MacBook Pro
>>> 
>>> Processor  2.3 GHz Intel Core i7
>>> 
>>> Software  Mac OS X Lion 10.7.5 (11G63)
>>> 
>>> 
>>> Julian Wells
> 
> 
> 
> -- 
> Brian D. Ripley,                  ripley at stats.ox.ac.uk
> 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
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com