Try this : new.DF <- DF[DF$x > ds,] ----- Christophe Poulet GIGA-Research. Human Genetics Dept. Liège, Belgium. -- View this message in context: http://r.789695.n4.nabble.com/Selecting-rows-that-don-t-match-tp3756382p3756878.html Sent from the datatable-help mailing list archive at Nabble.com.