Defines modification rules for a two-dimensional iterator in a virtual track

Defines modification rules for a two-dimensional iterator in a virtual track.

gvtrack.iterator.2d(
  vtrack = NULL,
  sshift1 = 0,
  eshift1 = 0,
  sshift2 = 0,
  eshift2 = 0
)

Arguments

vtrack

virtual track name

sshift1

shift of 'start1' coordinate

eshift1

shift of 'end1' coordinate

sshift2

shift of 'start2' coordinate

eshift2

shift of 'end2' coordinate

Value

None.

Details

This function defines modification rules for one-dimensional iterator intervals in a virtual track.

Iterator interval's 'start1' coordinate is modified by adding 'sshift1'. Similarly 'end1', 'start2', 'end2' coordinates are altered by adding 'eshift1', 'sshift2' and 'eshift2' accordingly.

See also

gvtrack.create, gvtrack.iterator

Examples

# \dontshow{
options(gmax.processes = 2)
# }

gdb.init_examples()
gvtrack.create("vtrack1", "rects_track")
gvtrack.iterator.2d("vtrack1", sshift1 = 1000, eshift1 = 2000)
gextract(
    "rects_track", "vtrack1",
    gintervals.2d(1, 0, 5000, 2, 0, 5000)
)
#> NULL