Hello, Why not == ?
x == y which(x == y) Hope this helps, Rui Barradas -- View this message in context: http://r.789695.n4.nabble.com/problem-in-matching-numbers-in-two-variables-tp4594912p4594976.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.