> What are you going to do with the data once you have read it in? Are > all the data items numeric? If they are numeric, you would need at > least 8GB to hold one copy and probably a machine with 32GB if you > wanted to do any manipulation on the data.
Well, I will use only sets of variables to analyze, I cant manage the full 500000 variables at a time, of course. So each time I make an analysis I will extract the information I need, so that's why I wanted an easy way to extract parts of the file. Best regards, Jose Lozano ______________________________________________ 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.