gml:AbstractGeometryType

All geometry elements are derived directly or indirectly from this abstract supertype. A geometry element may have an identifying attribute (gml:id), one or more names (elements identifier and name) and a description (elements description and descriptionReference) . It may be associated with a spatial reference system (attribute group gml:SRSReferenceGroup).
The following rules shall be adhered to:
-	Every geometry type shall derive from this abstract type.
-	Every geometry element (i.e. an element of a geometry type) shall be directly or indirectly in the substitution group of AbstractGeometry.

Complex type information

Namespace: http://www.opengis.net/gml/3.2

Schema document: external/ogc/gml/3.2.1/geometryBasic0d1d.xsd

Properties: Abstract

Content

from type gml:AbstractGMLType

from group gml:StandardObjectProperties

gml:metaDataProperty [0..*]

gml:description [0..1]The value of this property is a text description of the object. gml:description uses gml:StringOrRefType as its content model, so it may contain a simple text string content, or carry a reference to an external description. The use of gml:description to reference an external description has been deprecated and replaced by the gml:descriptionReference property.

gml:descriptionReference [0..1]The value of this property is a remote text description of the object. The xlink:href attribute of the gml:descriptionReference property references the external description.

gml:identifier [0..1]Often, a special identifier is assigned to an object by the maintaining authority with the intention that it is used in references to the object For such cases, the codeSpace shall be provided. That identifier is usually unique either globally or within an application domain. gml:identifier is a pre-defined property for such identifiers.

gml:name [0..*]The gml:name property provides a label or identifier for the object, commonly a descriptive name. An object may have several names, typically assigned by different authorities. gml:name uses the gml:CodeType content model. The authority for a name is indicated by the value of its (optional) codeSpace attribute. The name may or may not be unique, as determined by the rules of the organization responsible for the codeSpace. In common usage there will be one name per authority, so a processing application may select the name from its preferred codeSpace.

Attributes

Name	Occ	Type	Description	Notes
gml:id	[1..1]	xsd:ID	The attribute gml:id supports provision of a handle for the XML element representing a GML Object. Its use is mandatory for all GML objects. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs.	from type gml:AbstractGMLType
srsName	[0..1]	xsd:anyURI		from group gml:SRSReferenceGroup
srsDimension	[0..1]	xsd:positiveInteger		from group gml:SRSReferenceGroup
axisLabels	[0..1]	gml:NCNameList		from group gml:SRSInformationGroup
uomLabels	[0..1]	gml:NCNameList		from group gml:SRSInformationGroup

Used by

Element gml:AbstractGeometry
Element gml:AbstractImplicitGeometry
Element gml:AbstractCurve via derived type gml:AbstractCurveType
Element gml:AbstractGeometricAggregate via derived type gml:AbstractGeometricAggregateType
Element gml:AbstractGeometricPrimitive via derived type gml:AbstractGeometricPrimitiveType
Element gml:AbstractSolid via derived type gml:AbstractSolidType
Element gml:AbstractSurface via derived type gml:AbstractSurfaceType
Element gml:CompositeCurve via derived type gml:CompositeCurveType
Element gml:CompositeSolid via derived type gml:CompositeSolidType
Element gml:CompositeSurface via derived type gml:CompositeSurfaceType
Element gml:Curve via derived type gml:CurveType
Element gml:GeometricComplex via derived type gml:GeometricComplexType
Element gml:Grid via derived type gml:GridType
Element gml:LineString via derived type gml:LineStringType
Element gml:MultiCurve via derived type gml:MultiCurveType
Element gml:MultiGeometry via derived type gml:MultiGeometryType
Element gml:MultiPoint via derived type gml:MultiPointType
Element gml:MultiSolid via derived type gml:MultiSolidType
Element gml:MultiSurface via derived type gml:MultiSurfaceType
Element gml:OrientableCurve via derived type gml:OrientableCurveType
Element gml:OrientableSurface via derived type gml:OrientableSurfaceType
Element gml:Point via derived type gml:PointType
Element gml:Polygon via derived type gml:PolygonType
Element gml:PolyhedralSurface via derived type gml:SurfaceType
Element gml:RectifiedGrid via derived type gml:RectifiedGridType
Element gml:Solid via derived type gml:SolidType
Element gml:Surface via derived type gml:SurfaceType
Element gml:Tin via derived type gml:TinType
Element gml:TriangulatedSurface via derived type gml:SurfaceType
Element xls:Ellipse via derived type xls:EllipseType

Type inheritance chain

gml:AbstractGMLType
- gml:AbstractGeometryType
  - extended by gml:AbstractGeometricAggregateType
    - extended by gml:MultiGeometryType
    - extended by gml:MultiPointType
    - extended by gml:MultiCurveType
    - extended by gml:MultiSurfaceType
    - extended by gml:MultiSolidType
  - extended by gml:AbstractGeometricPrimitiveType
    - extended by gml:PointType
    - extended by gml:AbstractCurveType
      - extended by gml:LineStringType
      - extended by gml:CompositeCurveType
      - extended by gml:CurveType
      - extended by gml:OrientableCurveType
    - extended by gml:AbstractSurfaceType
      - extended by gml:PolygonType
      - extended by gml:CompositeSurfaceType
      - extended by gml:SurfaceType
        extended by gml:TinType
      - extended by gml:OrientableSurfaceType
    - extended by gml:AbstractSolidType
      - extended by gml:CompositeSolidType
      - extended by gml:SolidType
    - extended by xls:EllipseType
  - extended by gml:GeometricComplexType
  - extended by gml:GridType
    - extended by gml:RectifiedGridType