Hi,
	I'm trying to learn how a package works but substituting a  
parituclart function with my own (basically the original one with  
some debug statements).
	The package is lattice and the method is "print.trellis" which is a  
S3 method and is not visible.
	To replace this, i sourced a file with the rewritten print.trellis,  
and the old one was replaced.
	However, i get this error when I attempt to print a trellis object  
(e.g an xyplot)
	
	Error in assign("last.object", x, env = .LatticeEnv) :
	object ".LatticeEnv" not found
	
	I notice that .LatticeEnv is defined in zzz.R (in the R folder of  
the lattice source).

	My question, how does one do development on the lattice package  
without having to recompile everything and install a package?

	I read something about emacs and development (i use emacs) in the  
zzz.R file
	"## .First.lib will be used if the NAMESPACE file is missing.  This is
## useful during development, thanks to C-c C-l in Emacs/ESS. It won't
## be used if a NAMESPACE file is present.  Note: Due to registration
## of C functions done in the NAMESPACE file, wireframe (and possibly
## cloud) won't work in this scenario."

	But couldn't quite figure it out.
	Thanks for any help provided.
	Saptarshi


Saptarshi Guha | sapsi@pobox.com | http://www.stat.purdue.edu/~sguha


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