[R] Getting an older version of a package
murdoch at stats.uwo.ca
Sun May 24 22:36:13 CEST 2009
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
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.
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