This doesn't really have much to do with randomForest, but I run the
following code every few weeks to make sure all my packages are installed
and up to date.  Then you don't have to fiddle with doing it one by one.  In
case you haven't seen this; I got this code from someone else on this list.

x <- packageStatus(repositories="http://cran.r-project.org/src/contrib")
st <- x$avai["Status"]
install.packages(rownames(st)[which(st$Status=="not installed")])



On 4/18/06, Uwe Ligges <ligges@statistik.uni-dortmund.de> wrote:
>
> Ruth Meili wrote:
>
> > Hello
> >
> > I'd like to try out some functions in the package randomForest.
> Therefore,
> > I did install this package. However, it is not possible to load the
> > library, although I have R-Version 2.1.1 (i.e. later than 2.0.0). The
> > commands I used and the Answers/Error from R is as follows:
> >
> >  >
> > install.packages("C://Programme//R//rw2011//library//randomForest_4.5-
> 16.zip",
> > lib="C://Programme//R//rw2011//library//randomForest",repos = NULL)
> > package 'randomForest' successfully unpacked and MD5 sums checked
> > updating HTML package descriptions
> >  > library(randomForest)
> > Fehler in library(randomForest) : 'randomForest' ist kein gültiges Paket
> --
> > vor 2.0.0 installiert?
>
> Where did you get the zip file from?
>
> Most easily, you can install a package by simply saying
>   install.packages("randomForest")
> if you have an active internet connection.
>
> Anyway, you might want to upgrade your version of R to R-2.2.1 or even
> R-2.3.0 beta (to be released next monday) and help testing.
>
> Uwe Ligges
>
>
> > I run in this problem for the first time. Until now, I used to install
> new
> > packages by copying the*.zip-file to the "library"-directory in the
> > rw2011-directory. This seam not to work anymore. So I tried using the
> > function install.package(), but I did not success.
> >
> > Does anybody know the Problem? I did not find any hints in the NEWS.
> > Thanks anyway.
> > Ruth
> >
> >
> >
> >
> >
> >
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