[BioC] Rgraphviz load problem

[Rob J Goedman]

Hi Jane,

After the upgrade to R-2.2.0 I got the same error message. Fixed it  
by installing
Rgraphviz (1.8.0) from source. In order to do that you need to  
install a fairly recent version
of graphviz from source (I am using graphviz-2.2.1 at the moment, 2.6  
does not build on
my system).

The PixelGlow version can handle created dot files nicely, but you  
would have to
create the files in R and then open them in PixelGlow.

Let me know off-line if you need help installing graphviz.

Regards,
Rob