I found: max.col(matrix(c(1,3,2),nrow=1)) Is there a more concise/elegant way? Thanks, ----- TO GET MORE DETAILS CLICK HERE -- View this message in context: http://r.789695.n4.nabble.com/finding-index-of-maximum-value-in-vector-tp4651663.html Sent from the R help mailing list archive at Nabble.com.