Thanks, AK. That gets the job done and I learned 2 ways to do it. Much appreciated as always. -- View this message in context: http://r.789695.n4.nabble.com/Add-column-to-DF-based-on-2-columns-in-another-DF-tp4681950p4681969.html Sent from the R help mailing list archive at Nabble.com.