[Rd] Update today broke foreign package (PR#13533)
Hi, I'm running R 2.8.1 on Ubuntu, and today I got updates for a couple of packages, including foreign (r-cran-foreign, now at version 0.8.32). Subsequent to the upgrade, attempts to invoke read.spss produce the following error: Error in inherits(x, "factor") : object "cp" not found and the call to read.spss fails. I forced a downgrade to 0.8.26, and read.spss works again. Cheers, Paul Rubin __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Performing Merge and Duplicated on very large files
Hi, I am working with very large matrices (>1 million records), and need to 1. Join the files (can be achieved with Merge) 2. Find lines that have the same value in some field (after the join) and randomly sample 1 row. I am concerned with the complexity of merge - how (un)efficient is it? I don't have access to the real data, I need to send the script to someone who does, so I can't just try and see what happens. Similarly I am worried about the duplicated function - will it run on the merged matrix? It is expected to be ~500,000 rows long, and have small clusters of duplicated values (1-10 repeats of the same value). ER - - - - - - Eitan Rubin Dept. of Microbiology and Immunology AND National Institute of Biotechnology in the Negev Ben Gurion University Beer Sheva, Israel Phone: 08-6479197 __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] cpu bound cases
I'm considering some things AMD could do to accelerate R using GPU processors. In an internal discussion I was asked "Are there interesting R computations which are currently cpu bound?" I'm sure there are lots but I'd like to be able to name some real world cases. Does any one know of some good examples? Thanks Norm Rubin [[alternative HTML version deleted]] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
