R help - Mar 2001 - Windows: updating to R 1.2.2

Forgive me, but while I find the documentation for initially installing R
to be clear, I'm not so happy about updating.

I want to update from R 1.2.1 to R 1.2.2 (mainly so I can get the debugged
version of pictex() ).

Now I have downloaded the base zip files, say to Z:\Program Files and my
existing installation of R 1.2.1 is sitting in 
Z:\Program Files\rw1021. 

Running rwinst.exe I need to nominate an Install directory. I can nominate
a new directory Z:\Program Files\rw1022, but then I will not be able to
access my packages already installed for R 1.2.1.

I can nominate Z:\Program Files\rw1021 to install over the top of the old
version, but I am scared that this might stuff everything up, and I will
have no working version of R. 

I am just looking for some reassurance that the second course of action is
safe, or alternatively to be told the bad news that I must re-install all
of my existing packages under the new version of R.


Murray Jorgensen,  Department of Statistics,  U of Waikato, Hamilton, NZ
-----[+64-7-838-4773]---------------------------[maj at waikato.ac.nz]-----
"Doubt everything or believe everything:these are two equally convenient
strategies. With either we dispense with the need to think."
http://www.stats.waikato.ac.nz/Staff/maj.html          - Henri Poincare'

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On Wed, 7 Mar 2001, Murray Jorgensen wrote:
> Forgive me, but while I find the documentation for initially installing R
> to be clear, I'm not so happy about updating.
>
> I want to update from R 1.2.1 to R 1.2.2 (mainly so I can get the debugged
> version of pictex() ).
>
> Now I have downloaded the base zip files, say to Z:\Program Files and my
> existing installation of R 1.2.1 is sitting in
> Z:\Program Files\rw1021.
>
> Running rwinst.exe I need to nominate an Install directory. I can nominate
> a new directory Z:\Program Files\rw1022, but then I will not be able to
> access my packages already installed for R 1.2.1.
>
> I can nominate Z:\Program Files\rw1021 to install over the top of the old
> version, but I am scared that this might stuff everything up, and I will
> have no working version of R.
>
> I am just looking for some reassurance that the second course of action is
> safe, or alternatively to be told the bad news that I must re-install all
> of my existing packages under the new version of R.
Two ways:
- set .lib.loc also to the library path of the "old" version of R,
e.g.:
  .lib.loc <- c(.lib.loc, "c:/whateverdirectory/library")
- copy the libraries from the library-dir of the old version into the
library-dir of the new version

Suggestion:
For additionally libraries make an independent directory, say "c:/program
files/R-libs" for example. Install all new libraries into this directory
and set .lib.loc as needed. So updating R is not so much work in the
future.


Uwe Ligges

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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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