Hello, I need to extract sequences from an ordered vector. For example, if a<-c(1,2,3,6,10,11,13) I need to get the followings 4 vectors (1,2,3),(6),(10,11),(13) Thank You -Bruno ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-mode™ di Wind http://i-mode.wind.it/