R devel - Mar 2009 - S4 data dump or?

I am trying to dump some data in a file that I will add to a package.  
The data has an attribute which is a S4 object, and this seems to cause 
problems.   What is the preferred way to write a file with a dataset 
that has some S4 parts, so that it can be included in a package?

Paul Gilbert
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On Mon, 2 Mar 2009, Paul Gilbert wrote:
> I am trying to dump some data in a file that I will add to a package.  The 
> data has an attribute which is a S4 object, and this seems to cause
problems.
> What is the preferred way to write a file with a dataset that has some S4 
> parts, so that it can be included in a package?
Using save() seems almost always preferable to dump(): usually a 
smaller result, avoids representation error changes for numeric types 
and encoding issues for some character vectors, works for almost all 
objects.

I am guessing that the note on ?dump about objects of type S4 is the 
issue here.
> Paul Gilbert
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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