Sounds like you want to use the filehash package which was written for just such problems
http://yusung.blogspot.com/2007/09/dealing-with-large-data-set-in-r.html http://cran.r-project.org/web/packages/filehash/index.html or maybe the ff package http://cran.r-project.org/web/packages/ff/index.html -- View this message in context: http://www.nabble.com/How-to-read-HUGE-data-sets--tp15729830p15746400.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.