David.
On Nov 16, 2010, at 11:11 AM, Ken Knoblauch wrote:
> Hi,
>
> What's the cleanest way to restore R 2.11.1 without clobbering R
> 2.12?
> I know that pkgutil can be used to forget old receipts in order to
> upgrade
> to a higher version of R while retaining the lower one and then
> Rswitch
> can be used to choose the one to run. But, this didn't seem to work
> in
> the reverse direction, i.e., I have R 2.12 patched installed and I
> tried
> to install R 2.11.1 after running pkgutil. Rswitch did not record
> that
> R 2.11.1 had been installed and the GUI bombed out on startup (I
> probably
> have to install the R 2.11.1 GUI separately).
>
> Do I have to uninstall R 2.12 before reinstalling R 2.11.1 and then do
> use pkgutils, or is there a simpler way?
>
> The reason for wanting to do this is that I need to process some
> documents
> using Sweave that use the cacheSweave package, which currently is not
> working correctly with R 2.12, even though an update has been promised
> imminently.
>
> Thank you.
>
> Ken
>
>
> --
> Ken Knoblauch
> Inserm U846
> Stem-cell and Brain Research Institute
> Department of Integrative Neurosciences
> 18 avenue du Doyen L?pine
> 69500 Bron
> France
> tel: +33 (0)4 72 91 34 77
> fax: +33 (0)4 72 91 34 61
> portable: +33 (0)6 84 10 64 10
> http://www.sbri.fr/members/kenneth-knoblauch.html
>
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David Winsemius, MD
West Hartford, CT