[R-SIG-Mac] Hint: How to upgrade installed packages from R 2.1 to R 2.2

[Simon Urbanek]

Just a hint for those who upgrade to R 2.2.0 and want to (semi-) 
automatically retain all system-wide packages installed before: In  
the R GUI "Package Installer" click on 'Get List' button to obtain  
the list of all available packages. Once it's there, click on the  
'search' icon of the 'Package Search' box (which looks like a  
magnifying glass). If R GUI recognized an older version of R (like R  
2.1.1), there should be a menu item "Select Packages from R 2.1.1" in  
the pop-up menu. That item will select all packages that were (system- 
wide) installed in the previous R version. Now all you have to do is  
to click on the "Install Selected" button...

If you have packages from other repositories (like BioConductor),  
repeat the same steps after selecting the repository from the drop- 
down menu.

Cheers,
Simon