sequence                package:base                R Documentation

Create A Vector of Sequences

Description:

     For each element of 'nvec' the sequence 'seq_len(nvec[i])' is
     created.  These are concatenated and the result returned.

Usage:

     sequence(nvec)

Arguments:

    nvec: a non-negative integer vector each element of which specifies
          the end point of a sequence.

Details:

     Earlier versions of 'sequence' used to work for 0 or negative
     inputs as 'seq(x) == 1:x'.

     Note that 'sequence <- function(nvec) unlist(lapply(nvec,
     seq_len))' and it mainly exists in reverence to the very early
     history of R.

See Also:

     'gl', 'seq', 'rep'.

Examples:

     sequence(c(3,2))# the concatenated sequences 1:3 and 1:2.
     #> [1] 1 2 3 1 2

