[R] Cannot update 2.8.1 packages: unable to access index for repository...
Jeffrey.Marcus at nuance.com
Mon Mar 9 18:06:49 CET 2009
I am having trouble updating packages for R 2.8.1 in Windows XP. Note that I *am* able to update packages for R 2.7.0 (see bottom of posting) so this is not an Internet proxy problem. The steps I took were to
(a) Copy over packages from my existing (2.7.0) library subdiretory to the R 2.8.1 library subdirectory. This included a long list of packages including RODBC, rpart, RGraphViz, ggplot2 and their dependents.
(b) From within Rgui, run update.packages(ask='graphics')
I tried this several times with different repositories and mirrors and each time got messages like:
Warning: unable to access index for repository http://streaming.stat.iastate.edu/CRAN/bin/windows/contrib/2.8
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.
Warning: unable to access index for repository http://www.omegahat.org/R/bin/windows/contrib/2.8
Warning: unable to access index for repository http://cran.fhcrc.org/bin/windows/contrib/2.8
Finally, I noticed that a recent R-help thread http://www.nabble.com/Installing-the-Rstem-package-td22357873.html#a22362058
Includes the following comment (excerpted) from Professor Brian Ripley
a) There seem to be no Windows binaries on Omegahat for R > 2.7.
b) A few are available from CRAN extras (one of the default
repositories on Window), and I've added Rstem. So please try again
Does this mean that I should update 2.8.0 libraries from zip files manually? Or is there a more convenient workaround for updating?
By the way, here is what I see with R 2.7.0
trying URL 'http://streaming.stat.iastate.edu/CRAN/bin/windows/contrib/2.7/RODBC_1.2-4.zip'
Content type 'application/zip' length 195082 bytes (190 Kb)
downloaded 190 Kb
package 'RODBC' successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package 'RODBC'
The downloaded packages are in
C:\Documents and Settings\jmarcus\Local Settings\Temp\Rtmp5QBblK\downloaded_packages
updating HTML package descriptions
Thanks for any help
Manager, Applied Data Analysis
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