Are you using Microsoft OneCare? I had a similar problem accessing CRAN (actually setting a CRAN mirror) several weeks ago with R2.8.1 while R2.6.2 could access CRAN with no difficulties. Even running R as Administrator wouldn't work.
The problem proved to be that OneCare had asked for my permission to let R2.8.1 access the internet, but I missed the request (the window was buried elsewhere). Several days later the request again surfaced, I OKed the internet access and all the problems vanished. Charles Annis, P.E. charles.an...@statisticalengineering.com phone: 561-352-9699 eFax: 614-455-3265 http://www.StatisticalEngineering.com -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Marcus, Jeffrey Sent: Monday, March 09, 2009 1:07 PM To: r-help@r-project.org Subject: [R] Cannot update 2.8.1 packages: unable to access index forrepository... 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 now. 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 > update.packages(ask='graphics') 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) opened URL 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 ____________________________________________ JEFF MARCUS Manager, Applied Data Analysis NUANCE COMMUNICATIONS, INC. One Wayside Road Burlington MA 01803 781 565 5000 Office 781-565 5001 Fax NUANCE.COM The experience speaks for itself (tm) ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
