Trace closed outlines from slab points given in plane coordinates.
THROWS on invalid options or plane frame (unknown field, non-finite or out-of-range value). Points that are not finite are skipped and counted.
Optional
Trace closed outlines from slab points given in plane coordinates.
THROWS on invalid options or plane frame (unknown field, non-finite or out-of-range value). Points that are not finite are skipped and counted.