- 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 GeometryCollection is a geometry that is a
collection of one or more geometries of any class.
All the elements in a GeometryCollection must
be in the same Spatial Reference System (that is, in the same
coordinate system). There are no other constraints on the
elements of a GeometryCollection, although
the subclasses of GeometryCollection
described in the following sections may restrict membership.
Restrictions may be based on:
Element type (for example, a
MultiPointmay contain onlyPointelements)Dimension
Constraints on the degree of spatial overlap between elements
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