Mathew - thanks so much for your answer. I had given up after a little white at stackoverflow after the first few answers focused on critiquing my code.
thanks again, david -- View this message in context: http://r.789695.n4.nabble.com/stratified-weighted-means-tp4653556p4653560.html Sent from the datatable-help mailing list archive at Nabble.com. _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
