Stefano is right.
Rebuilding R with libpng doesn't change anything.
In any case thank you both Stefano and Bill.
I will wait until somebody has a possible solution.
Best wishes
Anestis

On Jul 19, 2005, at 11:05 PM, stefano iacus wrote:

> on Tiger, with R 2.1.1 from CRAN, if you install rgl with
> install.packages("rgl",type="source"), the rgl package builds fine
> (apart for small ld warnings) but the result is as reported by
> Anestis. If you don't have libpng in the system this doesn't hurt
> compilation.
> You can install libpng in your system but this doesn't fix the  
> problem.
>
> Apart for png graphics, it seems to me that the rgl device has
> problems with refreshing (under tiger).
> Points and lines are drawn but afterwards removed by an incomplete
> refresh.
> I don't know if this also happens on 10.3.
> stefano
>
>
> On 19/lug/05, at 14:13, Bill Northcott wrote:
>
>
>> On 18/07/2005, at 8:00 PM, Anestis Antoniadis wrote:
>>
>>
>>> I have upgraded to Tiger 10.4.2 and R 2.1.1.
>>> When launching rgl, everything seems to work OK.
>>> However the demo(rgl) doesn't do what it is supposed to do.
>>> demo(hist3d) works perfectly, but demo(abundance) just produces a
>>> single sphere. demo(regression) doesn't draw the points, demo
>>> (lsystem)
>>> displays the error message
>>> RGL: Pixmap load: file format unsupported
>>> RGL: Pixmap load: failed
>>> and in demo(bivar) once you click and try to move the surface
>>> on the X11 graphics window it disappears.
>>> Any similar behaviour from any of you?
>>> Any hints?
>>>
>>>
>>
>> You are doing better than me.  My attempt to install rgl from source
>> ends thus:
>> g++ -no-cpp-precomp -I/Library/Frameworks/R.framework/Resources/
>> include -I/System/Library/Frameworks/OpenGL.framework/Headers  -I/ 
>> usr/
>> X11R6/include -DDarwin -DNO_GL_PREFIX -I/usr/X11R6/include -I/usr/
>> local/include  -Wall -pedantic -fno-exceptions -fno-rtti -fno-common
>> -g -O2 -c scene.cpp -o scene.o
>> types.h:76: warning: 'class DestroyHandler' has virtual functions but
>> non-virtual destructor
>> gui.h:55: warning: 'class gui::WindowImpl' has virtual functions but
>> non-virtual destructor
>> gui.h:89: warning: 'class gui::GUIFactory' has virtual functions but
>> non-virtual destructor
>> pixmap.h:39: warning: 'class PixmapFormat' has virtual functions but
>> non-virtual destructor
>> scene.cpp: In member function 'void Texture::beginUse
>> (RenderContext*)':
>> scene.cpp:1994: error: invalid conversion from 'int*' to 'GLint*'
>> make: *** [scene.o] Error 1
>>
>> which looks pretty terminal.
>>
>> I fudged up the code in scene.cpp and got it to install. Now I have
>> your problem.  I assume this is because the R binary has been built
>> without libpng.  Mine certainly was.  I will try again with libpng.
>>
>> Bill Northcott
>>
>> PS Rebuilt R with libpng and now it all works.
>>
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>>
>>
>>
>
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====================================================
Prof. Anestis ANTONIADIS
Laboratoire de Modelisation et Calcul(LMC-IMAG)
Universite Joseph Fourier
Tour IRMA
B.P.53
38041 Grenoble CEDEX 9
FRANCE

Tel:(33) (0) 476514306
Fax:(33) (0) 476631263
=======================================================


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