Hi, I'll do something like this (there is probably a nicer way, but this code is what first comes up to my mind)
provided your data is in x pos1 <- which(x %in% val1)[1] pos2 <- which(x %in% val2)[which(x %in% val2) > pos1][1] -- View this message in context: http://r.789695.n4.nabble.com/Selecting-the-first-occurrence-of-a-value-after-an-occurrence-of-a-different-value-tp3217340p3217385.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.