[R] How to upgrade library from R 1.9.1 to R 2.0.1

[Prof Brian Ripley]

This is both in the NEWS file and in the rw-FAQ (you are on Windows, I 
believe, but have not mentioned it).

You absolutely must install packages properly (with R CMD INSTALL) on R 
2.0.1.   What you did has never to my knowledge been documented, and often 
did not work under 1.9.1, so you were fortunate.

You will find it easier to find the pertinent information if you search 
for the concept `package' (you are talking about a package) under 
`package' not `library'.  See

   3.1 Can I install packages into libraries in this version?

Yes, but you will need a lot of tools to do so, unless the author or the
maintainers of the `bin/windows/contrib' section on CRAN have been kind
enough to provide a pre-compiled version for Windows as a `.zip' file.
...

On Thu, 17 Feb 2005, YiYao_Jiang wrote:

> 	I have a library for R 1.9.1, it is very easy to setup a library in R 1.9.1.
>    For example:
>    I want to setup a library "test" for R1.9.1.
>    1. Create a folder "test" in the direct X:\ R\ rw1091\ library \.
>    2. Create a file "DESCRIPTION" in the direct X:\ R\ rw1091\ library\ test\.
>    3. Modify the "Package:" and "Title:" item to "test" in the file "DESCRIPTION" .
>    4.Create a folder "R" in the direct X:\ R\ rw1091\ library\ test\ .
>    5.Create a file "test" in the direct X:\ R\ rw1091\ library\ test\ R\ .
>    6. Add all the function into the "test" file.
>    Then I can call the "test" using command " library (test) ".
>    I setup the library using the same way in R2.0.1, but the library can't work.
>    The error message is " Error in library(test) : 'test' is not a valid package -- installed < 2.0.0? "
>    I search the help file and document but still can't upgrade the library.
>    Who can tell me how to upgrade library from R 1.9.1 to R 2.0.1 or give me a sample, thanks.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595