[R-SIG-Mac] rgl on macosx

Simone Gabbriellini simone.gabbriellini at sp.unipi.it
Wed Feb 2 19:19:35 CET 2005

Dear prof. Iacus,
I'm a newbie in R, and I'm interested in rgl package, because of my  
work on social network analysis (I use sna package, but I would like to  
use rgl to plot 3D graphs).
My problem is that I cannot find a way to load it, because the command  
library(rgl) gives me this output:

Error in dyn.load(x, as.logical(local), as.logical(now)) :
	unable to load shared library  
   dlcompat: dyld: /Applications/R.app/Contents/MacOS/R can't open  
library: /usr/local/lib/libpng12.0.dylib  (No such file or directory,  
errno = 2)
Error in library(rgl) : .First.lib failed for 'rgl'
Error in .C(symbol.C("rgl_quit"), success = FALSE, PACKAGE = "rgl") :
	C function name not in DLL for package rgl

I try to change




in rgl's .First.lib function, but still get no results. I see that the  
path it tries to follow doesn't match with the path that I use (which  
is correct), but it's the only clue I can give you.

Can you help me?

thank you in advance,
Simone Gabbriellini

ps: I'm having trouble also with the packages manager, which freeze R  
while it tries to load the package (I think that it's in looking for  
the documentation of the package but could not find it...)
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