On Fri, 22 Oct 2004, Prof Brian Ripley wrote:
> On Fri, 22 Oct 2004, Thomas Stabla wrote:
>
> > when trying to write an R-file, which automatically installs and updates a
> > given list of packages,
>
> Many of us already have scripts of that sort.
>
> > I had two problems with install.packages()
> >
> > 1) install.packages("<package>") will install <package>, no matter if
> > <package> has already been installed.
> > 2) the readline() at the end of install.packages, which asks the user, if
> > the downloaded files should be deleted, makes it difficult to
> > delete packages automatically after installation (I must admit, I'm not
> > quite familiar with R CMD BATCH)
> >
> >
> > Question/Request:
> > Is the behaviour in 1) intended?
>
> Most definitely. I might want to install it in another library, or to
> reinstall it under the current version of R.
This could be realised by using a (not existing) "force = TRUE" argument
to install.packages().
Thomas Stabla
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