restoring R 2.11.1 while keeping R 2.12
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