> Finally, FWIW, 10000 is not considered "very large" these days; maybe > 10,000,000,000 might be...
It's off topic, but I rather like Mike Driscoll's definition of big data: it's too big to fit on a single machine and must be stored on many (http://www.slideshare.net/dataspora/s-4455027). A small dataset is < 10 gb. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.