[R-SIG-Mac] Rgraphviz loading problem solved

[William Revelle]

Simon,
   A followup to the Rgraphviz issue and why I think installing X-Code 
solves at least one problem with getting it to work

On a G4 Powerbook I updated R to 2.5.0 patched. I then went to 
bio-conductor and downloaded Rgraphviz and all the associated 
packages.  Then installed graphviz 2.1.2 from 
http://r.research.att.com/.


However,
Without X-Code installed, when I try library(Rgraphviz) I get the 
following error message:


library(Rgraphics)
Error in library(Rgraphics) : there is no package called 'Rgraphics'
Loading required package: graph
Loading required package: geneplotter
Loading required package: annotate
Loading required package: Biobase
Loading required package: tools

Welcome to Bioconductor

   Vignettes contain introductory material. To view, type
   'openVignette()'. To cite Bioconductor, see
   'citation("Biobase")' and for packages 'citation(pkgname)'.

Loading required package: lattice
KernSmooth 2.22 installed
Copyright M. P. Wand 1997
Error in dyn.load(x, as.logical(local), as.logical(now)) :
	unable to load shared library 
'/Library/Frameworks/R.framework/Versions/2.5/
Resources/library/Rgraphviz/libs/ppc/Rgraphviz.so':
 
dlopen(/Library/Frameworks/R.framework/Versions/2.5/Resources/library/Rgraphviz/
libs/ppc/Rgraphviz.so, 6): Library not loaded: /usr/lib/libltdl.3.dylib
   Referenced from: /usr/local/lib/libgvc.3.dylib
   Reason: image not found
Error : .onLoad failed in 'loadNamespace' for 'Rgraphviz'
Error: package/namespace load failed for 'Rgraphviz'

____________________________
Then, once I install X-Code I get this:

>  library(Rgraphviz)
Loading required package: graph
Loading required package: geneplotter
Loading required package: annotate
Loading required package: Biobase
Loading required package: tools

Welcome to Bioconductor

   Vignettes contain introductory material. To view, type
   'openVignette()'. To cite Bioconductor, see
   'citation("Biobase")' and for packages 'citation(pkgname)'.

Loading required package: lattice
KernSmooth 2.22 installed
Copyright M. P. Wand 1997

Attaching package: 'Rgraphviz'


	The following object(s) are masked from package:annotate :

	 toFile


____

At which point any calls to Rgraphviz work perfectly. (And it is well 
worth loading for it makes some very nice graphs).

This was done using R version 2.5.0 Patched (2007-04-25 r41315)
(just installed R 2.5.0 today on the G4 power book that had this problem. )

  As I said yesterday, when my students or I installed X-Code on G4s, 
G5s, or MacBook Pros, then we were able to load Rgraphviz.  Once 
loaded, it works like a charm.

Best wishes,

Bill




-- 
William Revelle		http://personality-project.org/revelle.html
Professor			http://personality-project.org/personality.html
Department of Psychology       http://www.wcas.northwestern.edu/psych/
Northwestern University	http://www.northwestern.edu/
Use R for statistics:                 http://personality-project.org/r