Virtual recycling

repfromto virtually recylcles object x and cuts out positions from .. to

repfromto(x, from, to)

repfromto(x, from, to) <- value

Arguments

x

an object from which to recycle

from

first position to return

to

last position to return

value

value to assign

Value

a vector of length from - to + 1

Details

repfromto is a generalization of rep(), where rep(x, n) == repfromto(x, 1, n). You can see this as an R-side (vector) solution of the mod_iterate macro in arithmetic.c

See also

rep(), ff::ffvecapply()

Author

Jens Oehlschlägel

Examples

  message("a simple example")
#> a simple example
  repfromto(0:9, 11, 20)
#>  [1] 0 1 2 3 4 5 6 7 8 9