search for: tp3529825p3529825

...ally manipulate my data in data frames but i know lists are better for R so perhaps the above should be done using lists. Feel free to offer suggestions coming from that angle. Thanks guys JR- -- View this message in context: http://r.789695.n4.nabble.com/Summarize-by-two-or-more-attributes-tp3529825p3529825.html Sent from the R help mailing list archive at Nabble.com.