Correction: b$label <- cut(b$timestamp, breaks=bks, labels=lbs, include.lowest = T, right=F) ----- A R learner. -- View this message in context: http://r.789695.n4.nabble.com/Merging-columns-along-time-line-tp2289147p2289401.html Sent from the R help mailing list archive at Nabble.com.