[R] Interrupt R?

[Prof Brian Ripley]

On Sun, 11 Jul 2010, Spencer Graves wrote:

> Hi, Richard and Duncan:
>
>
>      Thank you both very much.  You provided different but workable 
> solutions.
>
>
>            1.  With Rgui 2.11.1 on Vista x64, the escape worked, but neither 
> ctrl-c nor ctrl-C worked for me.

Why did you expect them too?  Ctrl-C is documented to implement 'Copy' 
(the standard Windows shortcut).  (Did you mean Ctrl-Shift-C by 
'Ctrl-C' as distinct from 'Ctrl-c'?  I don't think that works 
anywhere.)

As Duncan said, Ctrl-C works in Rterm, and in almost all other R 
implementations (the Mac R.app GUI is the only other exception I know: 
it also uses Escape).

This is documented in the README (called something like 
README.R-2.11.1 in the binary distribution) and in the rw-FAQ Q5.1. 
Maybe it would be a good idea to refresh your memory of the basic 
documentation?

>            2.  The TCLTK version works but seems to require either more 
> skill from the programmer or more user training than using escape under Rgui 
> or ctrl-g/c under Emacs.
>
>
>      Best Wishes,
>      Spencer
>
>
> On 7/11/2010 12:02 PM, Duncan Murdoch wrote:
>> On 11/07/2010 2:29 PM, Spencer Graves wrote:
>>>        How can one interrupt the following gracefully:
>>> 
>>> 
>>> while(TRUE){
>>>    Sys.sleep(1)
>>> }
>>> 
>>>
>>>        In R2.11.1 under Emacs+ESS, some sequence of ctrl-g, ctrl-c 
>>> eventually worked for me.  Under Rgui 2.11.1, the only way I've found was 
>>> to kill R.
>>> 
>>>
>>>        Suggestions on something more graceful?
>> 
>> This is an Emacs+ESS bug.  In the Windows GUI or using Rterm, the standard 
>> methods (ESC or Ctrl-C resp.) work fine.
>> 
>> Duncan Murdoch
>> 
>> 
>>>
>>>        Beyond this, what would you suggest to update a real-time report 
>>> when new data arrives in a certain directory?  A generalization of the 
>>> above works, but I'd like something more graceful.
>>> 
>>>
>>>        Thanks,
>>>        Spencer Graves
>>> 
>>> 
>>> sessionInfo()
>>> R version 2.11.1 (2010-05-31)
>>> i386-pc-mingw32
>>> 
>>> locale:
>>> [1] LC_COLLATE=English_United States.1252
>>> [2] LC_CTYPE=English_United States.1252
>>> [3] LC_MONETARY=English_United States.1252
>>> [4] LC_NUMERIC=C
>>> [5] LC_TIME=English_United States.1252
>>> 
>>> attached base packages:
>>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>> 
>>> other attached packages:
>>> [1] SIM_0.5-0      RCurl_1.4-2    bitops_1.0-4.1 R2HTML_2.1     oce_0.1-80
>
> -- 
> Spencer Graves, PE, PhD
> President and Chief Operating Officer
> Structure Inspection and Monitoring, Inc.
> 751 Emerson Ct.
> San José, CA 95126
> ph:  408-655-4567
>
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-- 
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