[Rd] R-GNOME (PR#1503)

[Martyn Plummer]

On 02-May-2002 ripley@stats.ox.ac.uk wrote:
> On Thu, 2 May 2002 gonin@genethon.fr wrote:
> 
>> Hi R colleagues,
>>
>> I don't know whether this is a bug, but something weird happen with R-GNOME.
>> Version 1.5.0.
>> I compiled the stuff under i-686 Linux RH 7.2 using ./configure
>> --with-gnome.
>> R can be started with or without the Gnome interface: fine.
>> However, when I start with Gnome interface, jpeg and a few other
>> things are unavailable (checked using capabilities()), whereas
>> everything is available (except Gnome) when I start R without Gnome.
> 
> Have you actually tried them?  capabilities() can be wrong, as it only
> reports what it is sure about.  For me under RH7.2 jpeg(), png() and X11()
> do all work under R --gui=gnome.  (Well, actually gnome has problems with
> its dialogs as it makes assumptions about the X11 system in use and I am
> not using XFree86.)
> 
> I will try to work out a more definitive algorithm for capabilities, but
> its main use is to test if checks should be run, so it needs to be
> conservative.  And as you note, Gnome is experimental and has a separate
> maintainer ....

jpeg() is available under the GNOME interface and works correctly.

>> Also, some calls seem available with Gnome: system("..") returns nothing.
>> Maybe this is related to the experimental nature of the Gnome interface.
>> Hope that helps.

The GNOME port currently uses the same version of do_system as the unix
command line port of R.  This sends the output of the system call to
the standard output.  So, for example, if you R-GNOME from a terminal,
the output will appear in the terminal and not the R GNOME console.
GNOME needs its own version of do_system.  I will fix this for R 1.5.1.

Martyn
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