David Carlson <dcarlson <at> tamu.edu> writes: > > It may be that single and efficient are opposing goals. Two steps > lets you create the subset and then just order each query. > Alternatively, if the data do not change often, create an ordered > version and query that. >
I don't know the data.table package well, but it seems as though this might be an appropriate job for it. ______________________________________________ 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.
