OGC Simple Features
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
A collection of individual polygons, used as a single feature. Represented in 2D coordinates by FeatureGeometry.
Multi polygon
2D
Used with SamplingFeatures that don't have a directly specified geospatial geometry, such as a specimen whose geospatial location is inherited from its parent SamplingFeature.
The sampling feature has no applicable geospatial feature type
Not applicable
Non-spatial
2D
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
A collection of individual lines, used as a single feature. Represented in 2D coordinates by FeatureGeometry.
OGC Simple Features
Multi line string
2D
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
A subclass of a Curve using linear interpolation between points. A Curve is a 1-dimensional geometric object usually stored as a sequence of Points. Represented in 2D coordinates by FeatureGeometry.
OGC Simple Features
Line string
Topological 0-dimensional geometric primitive representing a position. Represented in 2D coordinates by FeatureGeometry.
Point
OGC Simple Features
2D
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
2D
OGC Simple Features
Multi point
A collection of individual points, used as a single feature. Represented in 2D coordinates by FeatureGeometry.
A vocabulary for describing the geospatial feature type associated with a SamplingFeature. For example, Site SamplingFeatures are represented as points. In ODM2, each SamplingFeature may have only one geospatial type, but a geospatial types may range from simple points to a complex polygons or even three dimensional volumes.
ODM2 SamplingFeatureGeotype Controlled Vocabulary
ODM2 Working Group
2D
Polygon
Simple Features OGC document (pdf): http://portal.opengeospatial.org/files/?artifact_id=25355 See also this more accessible description of Simple Features Well-Known Text terms: http://en.wikipedia.org/wiki/Well-known_text
A planar Surface defined by 1 exterior boundary and 0 or more interior boundaries. Each interior boundary defines a hole in the Polygon. Polygons are topologically closed. Polygons are a subclass of Surface that is planar. A Surface is a 2-dimensonal geometric object. Represented in 2D coordinates by FeatureGeometry.
OGC Simple Features
A three dimensional space enclosed by some closed boundary.
Volume
Definition adapted from wikipedia
3D