search for: chars_dup

...g numbers. However, for the char 'F' it should be always increasing numbers. Is that possible in R? I used the following code: chars <- c('A', 'B', 'C', 'C', 'D', 'E', 'E', 'E', 'F', 'F', 'F') chars_dup <- duplicated(chars) cumsum(!chars_dup) [1] 1 2 3 3 4 5 5 5 6 6 6 But I do not know how to treat 'F' in the way described above. Regards -- View this message in context: http://r.789695.n4.nabble.com/Derive-pattern-from-vector-tp4379312p4379312.html Sent from the R help maili...