This is actually an R-sig-mac question so I am responding there.
In general, if you want to install a new version without losing the
previous packages, using the finder, go to Library/Receipts and
remove the R.app and R.Gui receipts. Then install the new version.
That will keep the previous packages. This is not mysterious, this
is R.
Thanks to Simon et al. for the upgrade.
Bill
At 11:00 PM -0400 8/27/08, Charilaos Skiadas wrote:
On Aug 27, 2008, at 10:40 PM, Rolf Turner wrote:
On 28/08/2008, at 2:02 PM, James Milks wrote:
The title says it all. Does anyone know of a way to save your
packages when you upgrade to a new version of R? This may seem
petty, but I'm accumulating enough packages that having to
download and install each of them anew every time I install a new
version of R is rather of a pain. Ideally, I would like the new
version of R to recognize the packages I've installed on the
previous version without needing to reinstall the packages. Is
that possible?
My system: Mac OS 10.5.4.
Current R version: 2.7.1
Mac OS moves in mysterious ways, but apparently your installation
moves in more mysterious
ways than most.
I also (by necessity, not by choice) run Mac OS. But I certainly
don't lose my
packages when I update R. The new version of R certainly
``recognizes'' the packages
that I have installed. No action required.
There may be something funny about *where* you have your packages
installed, and
what environment variables you have set.
To answer your question ``Is that possible?'' --- Yes. Not just possible,
but universal. Except, it would seem, in your case. What have you done
to offend the gods? :-)
Actually have had the same problem as James. By default, unless I'm
mistaken, R will save installed packages within the "R.framework"
framework (system-wide installation). This framework gets completely
replaced when a new version is installed. In my system, the location
of these packages is:
/Library/Frameworks/R.framework/Resources/library
So unless I am mistaken you have to take some action to prevent
packages from being installed there. I do hope I am wrong.
cheers,
Rolf Turner
Haris Skiadas
Department of Mathematics and Computer Science
Hanover College
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