[R] Tunnelling X for R graphics

[Prof Brian Ripley]

To answer your basic question, you do need to shut down everything 
involivng X, that is X11() devices and the X11 dataeditor.  If you do 
that (and graphics.off() will suffice for the first), you should be 
able to re-open an X11 device on another display (which is what 
presumably a new VNC connection gives you).

The warning comes from any X erorr, and it is not possible to know how 
serious it is without external information.

On Mon, 2 Feb 2009, Adam D. I. Kramer wrote:

>
> On Tue, 3 Feb 2009, Patrick Connolly wrote:
>
>>> 	The problem, and maybe I'm just whining here, is that because the
>>> data sets are large this takes several minutes where I'm basically just
>>> sitting around.  This happens once every other day as the VPN software
>>> I'm using "times out" after about 24 hours and thus the ssh session dies.
>> 
>> Is it possible to do anything about the VPN software?  I use tightVNC to
>> do something similar and it doesn't time out after 24 hours.  Even closing
>> the desktop machine down altogether does not lose the ssh connexion. 
>> Restarting the desktop a week later will still find the X session without
>> loss.
>
> The VPN software is managed and maintained by the company I'm doing
> statistical computing work for...out of my control. Your comments about
> TightVNC are pretty impressive, though--I'm not really sure how that would
> work...though if you set your ssh connection to not push any data towards
> your computer, I gather the server would have no reason to believe you were
> unresponsive?
>
> In any case, this sadly doesn't help me, but many thanks!
>
> For now, I'm just trying my hardest to remeber to dev.off() when I'm done
> using graphics.
>
> --Adam
>
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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