search for: tp2259721p2259721

...d is to replace all NAs by 0, then rank all the values and then extract the positions with the 50 highest ranks. It is very time-consuming! Is there a simpler way to do this? Thank you, Ulrich -- View this message in context: http://r.789695.n4.nabble.com/Find-the-50-highest-values-in-a-matrix-tp2259721p2259721.html Sent from the R help mailing list archive at Nabble.com.