[R] Tunnelling X for R graphics

[Prof Brian Ripley]

On Tue, 3 Feb 2009, Adam D. I. Kramer wrote:

> Thanks very much for the reassurance.
>
> Really, I can just open a new X11 device on the same display, since the
> display (localhost:10) is effectively "reconnected" when I ssh in again.

We are not taiking about the DISPLAY variable, but the X11 structure 
'display'.  It is the latter that needs to be reinitialized.

>
> I'll reply again to this post if I find other parts of R working poorly
> after the disconnection.
>
> --Adam
>
> On Tue, 3 Feb 2009, Prof Brian Ripley wrote:
>
>> 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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>>> 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,                  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
>> 
>

-- 
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