On 28/08/2008, at 3:00 PM, 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.
I'm not sure --- I find Mac OS very confusing. But I have the
***impression*** that
(on my system) by default packages get installed into
~/Library/R/2.7/library
i.e. into a library inside the directory tree rooted in my login
directory.
I don't use this --- I've created my own library ~/Rlib and have
set up an environment variable to point to it.
(This works properly only if you start R from the command line; for
reasons I don't understand if you start R by clicking on the icon
then R doesn't know about the R_LIBS environment variable. But since
all civilized people start R from the command line .....)
I have no idea why youse guys' systems would eschew using ~/Library/
<whatever>.
cheers,
Rolf Turner
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