- 11.13.2 The OpenGIS Geometry Model
- 11.13.2.1 The Geometry Class Hierarchy
- 11.13.2.2 Class Geometry
- 11.13.2.3 Class Point
- 11.13.2.4 Class Curve
- 11.13.2.5 Class LineString
- 11.13.2.6 Class Surface
- 11.13.2.7 Class Polygon
- 11.13.2.8 Class GeometryCollection
- 11.13.2.9 Class MultiPoint
- 11.13.2.10 Class MultiCurve
- 11.13.2.11 Class MultiLineString
- 11.13.2.12 Class MultiSurface
- 11.13.2.13 Class MultiPolygon
A MultiPolygon is a
MultiSurface object composed of
Polygon elements.
MultiPolygon
Examples
On a region map, a
MultiPolygoncould represent a system of lakes.
MultiPolygon
Assertions
A
MultiPolygonhas no twoPolygonelements with interiors that intersect.A
MultiPolygonhas no twoPolygonelements that cross (crossing is also forbidden by the previous assertion), or that touch at an infinite number of points.A
MultiPolygonmay not have cut lines, spikes, or punctures. AMultiPolygonis a regular, closed point set.A
MultiPolygonthat has more than onePolygonhas an interior that is not connected. The number of connected components of the interior of aMultiPolygonis equal to the number ofPolygonvalues in theMultiPolygon.
MultiPolygon
Properties
A
MultiPolygonis a two-dimensional geometry.A
MultiPolygonboundary is a set of closed curves (LineStringvalues) corresponding to the boundaries of itsPolygonelements.Each
Curvein the boundary of theMultiPolygonis in the boundary of exactly onePolygonelement.Every
Curvein the boundary of anPolygonelement is in the boundary of theMultiPolygon.
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