Hello everyone, I have a matrix with 8000 rows. If I want to select every 8 rows, (i.e. row1, row2, ..., row8), what should I do? Appriciate for any hints! Thanks a lot! Leo -- View this message in context: http://n4.nabble.com/select-n-rows-tp1693136p1693136.html Sent from the R help mailing list archive at Nabble.com.