[R-SIG-Mac] Easiest way to install R 2.12.0 on a Mac

[Prof Brian Ripley]

On Mon, 18 Oct 2010, Richard R. Liu wrote:

> Hello,
>
>
> Up to now I've reinstalled all packages when upgrading R.  Is there an easier
> way.  I'm wondering whether just copying the contents of ~/Library/R/2.11 to
> ~/Library/R/2.12 followed by updating in Packages & Date > Package Installer >
> Update All in the R Console (R.app) would do the trick.

I don't believe so.  Running

update.packages(checkBuilt=TRUE, ask=FALSE)

should, though.  (You will find more discussion in the archives or the 
rw-FAQ -- equally relevant for Mac binary packages.)

One thing to watch is that this does not update packages which are no 
longer available or not available in binary form (rather a lot for 
2.12.0 on the Mac), so

summary(packageStatus())

can be useful.

When you have an update from 2.x.y to 2.z.0 with z > x you should 
reinstall all packages -- you don't need to in all cases but only the 
experts know which.  Also, rendering of help improves continuously so 
by updating you get the best available rendering.

> Thanks,
> Richard
>
>
>
> Richard R. Liu
> richard.liu at pueo-owl.ch
>
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>

-- 
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