[R] Installing packages into updated R

Henric Nilsson henric.nilsson at statisticon.se
Tue Dec 20 17:23:59 CET 2005

On Ti, 2005-12-20, 16:11, Michael H. Prager skrev:

> A minor inconvenience in updating an R installation is remembering which
> packages were installed previously.  Has anyone written a script to
> inspect a previous installation, then get & install the same packages
> into the new installation?

If the previous installation is still alive, fire it up and

pS <- packageStatus()
pkgs <- pS$inst$Package[!pS$inst$Priority %in% c("base", "recommended")]
save(pkgs, file = "foo")

In the new installation,



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