	Several of us locally are puzzling over the following problem:

	We have a central repository of R packages on our linux system.
Occasionally, we'd like to install a different version of the same
package (such as making updates to the survival package before it is
released to the larger group, or a downloaded beta version).   When
using the library function, it appears that lib.loc is not being used
and instead the central repository is being used.  We've even tried
modifying .libPaths( ) so that our local path is first in the search
list.  Is this a bug or a "feature"?

	For example: 

	>
install.packages('DBI',lib='/data1/bsi/epi/s105816.SNPlinkage/CNV/rlib')
	> library(DBI,
lib.loc='/data1/bsi/epi/s105816.SNPlinkage/CNV/rlib')

	I can look in my directory and see that DBI is version 0.2-5,
but when I use the library command I get the version installed in the
central location instead of in my specified directory.  

	> library(help=DBI)

			Information on package 'DBI'

	Package:       DBI
	Version:       0.2-4
	Title:         R Database Interface
	Author:        R Special Interest Group on Databases (R-SIG-DB)
	Maintainer:    David A. James <daj025@gmail.com>
	Depends:       R (>= 2.3.0), methods
	LazyLoad:      yes
	License:       LGPL (version 2 or later)
	Collate:       DBI.R Util.R zzz.R
	Packaged:      Tue Oct 16 21:43:31 2007; dj
	Built:         R 2.10.0; ; 2009-10-26 17:51:14 UTC; unix

	Further information is available in the following vignettes in
	directory
'/usr/local/biotools/r/R-2.10.0/lib64/R/library/DBI/doc':

> version
               _                            
platform       x86_64-unknown-linux-gnu     
arch           x86_64                       
os             linux-gnu                    
system         x86_64, linux-gnu            
status                                      
major          2                            
minor          10.0                         
year           2009                         
month          10                           
day            26                           
svn rev        50208                        
language       R                            
version.string R version 2.10.0 (2009-10-26)

Beth Atkinson, MS | Statistician III | Division of Biomedical Statistics
& Informatics| Assistant Professor of Biostatistics  
Phone: 507-284-0431 | Admin Assistant: 507-266-4556 | Fax: 507-284-9542
| atkinson@mayo.edu
Mayo Clinic | 200 First Street SW | Rochester, MN 55905 |
www.mayoclinic.org



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