Re-cast intersecting multi-polygons to polygons. Used when combining regulatory zones with closure areas.
Arguments
- grid
Grid file containing regulatory zones.
- closure
Closure file containing closure areas.
- combined
Combined version of grid and closure file.
- id
Character, the name of the zone ID column.
Details
This function is primarily used to extract polygons during
the ID re-labeling process performed by new_zone_id
. If
a polygon from grid
intersected with closure
, it is extracted
from it's multi-polygon and given a unique ID.