R help - May 2005 - A model package that uses S4 methods and name spaces?

I'd like to try and rewrite my package to take advantage of S4 methods and
name spaces.  I am presuming that S4 methods and name spaces will help me
write and maintain my package.

Can someone suggest a "model" package that uses best practices for
mixing
S3, S4 methods and name spaces?  Preferably a package with multiple R
source files.

-L

rlee at fpcc.net wrote:
> I'd like to try and rewrite my package to take advantage of S4 methods
and
> name spaces.  I am presuming that S4 methods and name spaces will help me
> write and maintain my package.
> 
> Can someone suggest a "model" package that uses best practices
for mixing
> S3, S4 methods and name spaces?  Preferably a package with multiple R
> source files.
It doesn't mix S3 and S4 but the Matrix package is a large package based
on S4 that does show the use of S4 and a NAMESPACE.  On a smaller scale,
the lme4 package also uses S4 and a NAMESPACE.