R help - Jul 2003 - namespaces and saved objects

Hi,

While saving (function 'save') a 'lmList' object (pack nlme),
R issues the warning messages:
1: namespaces may not be available when loading 
2: names in persistent strings are currently ignored 
3: namespaces may not be available when loading 
4: names in persistent strings are currently ignored 

Any pitfall I should be aware of ?


L.


PS: I use 
> R.version
         _                
platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
status   Patched          
major    1                
minor    7.1              
year     2003             
month    06               
day      23               
language R

On Tue, 1 Jul 2003, Laurent Gautier wrote:
> Hi,
> 
> While saving (function 'save') a 'lmList' object (pack
nlme),
> R issues the warning messages:
> 1: namespaces may not be available when loading 
> 2: names in persistent strings are currently ignored 
> 3: namespaces may not be available when loading 
> 4: names in persistent strings are currently ignored 
> 
> Any pitfall I should be aware of ?
Only that you will need to have package nlme available to re-load the 
workspace.  I think these warnings have been removed in the development 
version of R.

I've removed the cause of such messages with the MASS function glm.nb() 
recently, and I guess nlme is doing similar things.  The cause was that 
negative.binomial() created a family of functions, which thereby had the 
body of negative.binomial as their environment and hence the MASS 
namespace in its environment.  As the latter was a minor nuisance, I have
manipulated the environments.

-- 
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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595