Thanks for the quick response. I tried to install from R-Forge but it seems that data.table is not currently available?
> install.packages("data.table",repos="http://R-Forge.R-project.org") Warning: unable to access index for repository http://R-Forge.R-project.org/bin/macosx/universal/contrib/2.10 Warning message: In getDependencies(pkgs, dependencies, available, lib) : package ‘data.table’ is not available > -J 2010/4/29 Tom Short <tshort.rli...@gmail.com>: > Johannes, please try the latest version on R-forge (1.4). That error > has been fixed, and it's much faster. We hope to have that to CRAN > reasonably soon. > > To install, use: > > install.packages("data.table",repos="http://R-Forge.R-project.org") > > - Tom > > Tom Short > > On Thu, Apr 29, 2010 at 3:40 PM, johannes rara <johannesr...@gmail.com> wrote: >> I'm trying to learn data.table package but I get a following annoying >> error message: >> >>> install.packages("data.table") >> trying URL >> 'http://www.freestatistics.org/cran/bin/macosx/universal/contrib/2.10/data.table_1.2.tgz' >> Content type 'application/x-gzip' length 66823 bytes (65 Kb) >> opened URL >> ================================================== >> downloaded 65 Kb >> >> >> The downloaded packages are in >> >> /var/folders/n-/n-wPTanPGa4PpVd0bTgCOU+++TI/-Tmp-//RtmppqPptG/downloaded_packages >>> library(data.table) >>> cr <- data.table(cars) >>> cr[speed == 20] >> speed dist >> [1,] 20 32 >> [2,] 20 48 >> [3,] 20 52 >> [4,] 20 56 >> [5,] 20 64 >> Warning messages: >> 1: In `[.data.table`(cr, speed == 20) : >> This R session is < 2.4.0. Please upgrade to 2.4.0+. >> 2: In `[.data.table`(cr, speed == 20) : >> This R session is < 2.4.0. Please upgrade to 2.4.0+. >>> >> >> I'm using R 2.10.1 (see sessioninfo below), so why this error message >> keeps popping up? >> >>> sessionInfo() >> R version 2.10.1 (2009-12-14) >> i386-apple-darwin8.11.1 >> >> locale: >> [1] fi_FI.UTF-8/fi_FI.UTF-8/C/C/fi_FI.UTF-8/fi_FI.UTF-8 >> >> attached base packages: >> [1] stats graphics grDevices utils datasets methods base >> >> other attached packages: >> [1] data.table_1.2 ref_0.97 >> >> loaded via a namespace (and not attached): >> [1] tools_2.10.1 >>> >> >> -J >> >> ______________________________________________ >> 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.