Duncan Murdoch, Many thank you for your reply. I did try to download the older versions from CRAN. But I am not quite sure how to compile the source form. I tried using the option "install package(s) from local zip files" in R, but it didn't work. It simply gave the following msg
> utils:::menuInstallLocal() updating HTML package descriptions On Sun, May 24, 2009 at 4:36 PM, Duncan Murdoch <murd...@stats.uwo.ca> wrote: > On 24/05/2009 4:00 PM, Le Wang wrote: >> >> Hi there, >> >> Thanks for your time in advance. >> >> I am using an add-on package from Cran. After I updated this package, >> some of my programs don't work any more. I was wondering if there is >> anything like version control so that I could use the older version of >> that package; or if I could manually install the previous version and >> how I could acheive it? I am not a regular R user; although it is >> supposed to be very easy, after spending many hours on this, I still >> haven't figured out how to proceed. Your help will be greatly >> appreciated. > > CRAN has the older versions of the package available in source form. You > need to download one of those and install it: but watch out for other > packages that depend on the newer one. In the long run, it's probably a > better investment of your time to fix your programs to work with the new > package. (Or possibly report to the package maintainer if they have > introduced a bug.) > > Prior to R 2.9.0, it was possible to install multiple different versions of > packages, but this never worked perfectly, and it has been dropped. > > Duncan Murdoch > > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
