[R] About upgrade R

csrabak crabak at acm.org
Sun Nov 14 23:42:39 CET 2010

Em 14/11/2010 18:24, Tal Galili escreveu:
> Hi John, thank you for that input.
> It could be that the code I wrote here:
> http://www.r-statistics.com/2010/04/changing-your-r-upgrading-strategy-and-the-r-code-to-do-it-on-windows/
> Should be updated so every time you install a new R version, you run the
> code for it to:
> 1) copy all packages from the old R version to the new R version library
> 2) update all the packages.
> But I have no clue how to do step 1.

I've a clue but not the exact syntax for doing it:

    a) you need to get the library directory path of your current
       installation or if putting it manually;
    b) list.files(path = '<path to your libraries>')
       select the directories with the return of file.info();
    c) save the list for processing in the newer R version;
    d) in the newer version you use the list as argument to

All the aforementioned /caveats/ about packages not in CRAN still apply. . .


Cesar Rabak

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