Em 14/11/2010 20:42, csrabak escreveu:
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();
I've been educated that all above (a - b) can be obtained in a single
object with a call to library().
> libs <- library()
libs$results[,"Package"] will contain the list of installed packages.
c) save the list for processing in the newer R version;
d) in the newer version you use the list as argument to
install.packages().
All the aforementioned /caveats/ about packages not in CRAN still apply.
. .
Regards,
HTH
--
Cesar Rabak
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