Oh. How can you tell that (that it's for 2.16 and a year away)? For completeness, it'll be a bigger difference (and for more people) using matrix (and objects using matrix) than data.table I'd guess? Since a matrix is really one long vector, a single matrix can then be greater than 16Gb (currently n*m < 2^31-1, iiuc). In data.table (and data.frame) each column can already up to 16Gb, and the data.table/frame as large as RAM. The 2 billion row limit can still bite though and the change is very welcome.
Matthew > Hi, > > Yeah, long vectors are awesome and a welcomed (future) addition to R. > For whatever it's worth, I'm pretty sure that this (R-devel) is for > R-2.16.x (and not 2.15.1), which is still a year away. > > -steve > > On Wed, Apr 18, 2012 at 5:15 AM, Matthew Dowle <[email protected]> > wrote: >> >> Dear datatablers, >> >> Looks like support for long vectors is being added to R : >> >> http://stat.ethz.ch/R-manual/R-devel/doc/html/NEWS.html >> >> Since data.table hooks into R's internals, it is already failing on >> r-devel CRAN checks (as Prof Ripley warning us a while back). >> >> So, I'll see what I can do, but advance warning that we might need to >> soon >> depend on R 2.15.1 (or whichever version of R long vectors makes it >> into). >> However, I'd say there was an 80% chance it'll be compile time switches >> and we can continue to depend on R 2.12.0 in future versions of >> data.table. >> >> Matthew >> >> >> >> _______________________________________________ >> datatable-help mailing list >> [email protected] >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help > > > > -- > Steve Lianoglou > Graduate Student: Computational Systems Biology > | Memorial Sloan-Kettering Cancer Center > | Weill Medical College of Cornell University > Contact Info: http://cbio.mskcc.org/~lianos/contact > _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
