Sequenze numeriche

seq(from, to, by, length.out)

seq(from=1, to=5)1 2 3 4 5
seq(from=1, to=10, by=2)1 3 5 7 9
seq(from=5, to=1)5 4 3 2 1
seq(from=10, to=1, by=-2)10 8 6 4 2
seq(from=1, length.out=5)1 2 3 4 5
seq(to=10, length.out=5)6 7 8 9 10

seq_len(...)

seq_len(...)Nel caso seq(from, to, by, length.out)
seq_along(x)Genera gli indici per l’oggetto x.
Come seq(length.out(length(x)))