[Rd] X11 image problem in R-2.8.0 Under development / R-2.7

[Prof Brian Ripley]

On Sat, 5 Apr 2008, Martin Morgan wrote:

> Yes, thank you, this fixes the problem for me.
>
> As a follow-up, and again with my ignorance of where processing is
> actually occuring, it seems like the X11 window content is drawn
> directly rather than being drawn to a buffer and then blit on to the
> screen -- the original appearance of the plot is slow, compared to,
> e.g., hiding and then revealing the image once it has been plotted.

That is not so for the default type="cairo".  The problem is likely to be 
that the bitblt is across the network, whereas repaint is a bitblt from a 
local copy.

There are some comments on the X11() help page -- you may want to try type 
= "nbcairo".  Some changes are planned for R 2.8.0 which will improve 
performance, but for now things are tuned for the most common case of a 
local X11 display (although type = "nbcairo" works quite well over my home 
wireless network).

>
> R version 2.8.0 Under development (unstable) (2008-04-05 r45102)
>
> Thank you again for tracking down the original issue.
>
> Martin
>
> Prof Brian Ripley <ripley at stats.ox.ac.uk> writes:
>
>> I think I have found this -- if so, it was an X11 timing issue and we
>> needed to re-read the X11 window size at a later time.  Please try
>> r45102 or later.
>>
>> On Fri, 4 Apr 2008, Prof Brian Ripley wrote:
>>
>>> On Thu, 3 Apr 2008, Martin Morgan wrote:
>>>
>>>> I apologize if this is too obscure to reproduce, or some idiosyncratic
>>>> aspects of my system. If I create a plot, e.g.,
>>>>> plot(1:10)
>>>> I get a graphics device as expected. I then click on the 'zoom' box
>>>> on
>>>> my X11 window, so the window expands to occupy the entire screen. The
>>>> plot is redrawn at the scale of the large window, but is clipped to the
>>>>   'unzoomed' size. I only see the top left portion of the plot,
>>>> occupying the space of the original image.
>>>> Here are the R essentials; I'm using X11 on a recent SuSE,
>>>> connecting
>>>> via a moderately out-of-date cygwin from Windows. I'm happy to provide
>>>> more detail if pointed in the right direction (and will trouble shoot
>>>> myself if this is not a general problem).
>>>
>>> We've seen it, but not all systems do it.  At present it looks like
>>> a cairo bug, but more work is needed on it.  If we haven't found a
>>> workaround by release time, it will be documented on the help page.
>>>
>>>>> sessionInfo()
>>>> R version 2.8.0 Under development (unstable) (2008-04-03 r45066)
>>>> x86_64-unknown-linux-gnu
>>>> locale:
>>>> LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
>>>> attached base packages:
>>>> [1] stats     graphics  grDevices utils     datasets  methods   base
>>>>> capabilities()
>>>>     jpeg      png    tcltk      X11     aqua http/ftp  sockets   libxml
>>>>     TRUE     TRUE     TRUE     TRUE    FALSE     TRUE     TRUE     TRUE
>>>>     fifo   cledit    iconv      NLS  profmem    cairo
>>>>     TRUE     TRUE     TRUE     TRUE     TRUE     TRUE
>>>> Martin
>>>> --
>>>> Martin Morgan
>>>> Computational Biology / Fred Hutchinson Cancer Research Center
>>>> 1100 Fairview Ave. N.
>>>> PO Box 19024 Seattle, WA 98109
>>>> Location: Arnold Building M2 B169
>>>> Phone: (206) 667-2793
>>>> ______________________________________________
>>>> R-devel at r-project.org mailing list
>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>>
>>>
>>> --
>>> 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
>
> --
> Martin Morgan
> Computational Biology / Fred Hutchinson Cancer Research Center
> 1100 Fairview Ave. N.
> PO Box 19024 Seattle, WA 98109
>
> Location: Arnold Building M2 B169
> Phone: (206) 667-2793
>

-- 
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