gml:AbstractGeometry

The AbstractGeometry element is the abstract head of the substitution group for all geometry elements of GML. This includes pre-defined and user-defined geometry elements. Any geometry element shall be a direct or indirect extension/restriction of AbstractGeometryType and shall be directly or indirectly in the substitution group of AbstractGeometry.

Element information

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

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

Type: gml:AbstractGeometryType

Properties: Global, Qualified, 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 in

Group gml:Value
Type geo:GeometryType (Elements geo:AreaRegionGeometry, geo:Geometry, geo:LocationGeometry)
Type gml:ArrayAssociationType (Element gml:members)
Type gml:DomainSetType (Elements gml:domainSet, gml:multiPointDomain, gml:multiCurveDomain, gml:multiSurfaceDomain, gml:multiSolidDomain, gml:gridDomain, gml:rectifiedGridDomain)
Type gml:GeometryArrayPropertyType (Element gml:geometryMembers)
Type gml:GeometryPropertyType (Elements gml:position, gml:geometryMember)
Type gml:LocationPropertyType (Element gml:location)
Type gml:PriorityLocationPropertyType via extension of gml:LocationPropertyType (Element gml:priorityLocation)
Type gml:TargetPropertyType (Elements gml:target, gml:subject)
Type gml:ValueArrayPropertyType via reference to gml:Value (Element gml:valueComponents)
Type gml:ValuePropertyType via reference to gml:Value (Elements gml:valueProperty, gml:valueComponent)
Type gss:GM_Object_PropertyType (Element gmd:polygon)

Substitution hierarchy

gml:AbstractObject
- can be substituted with gml:AbstractGML
  - can be substituted with gml:AbstractGeometry
    - can be substituted with gml:AbstractGeometricAggregate
      - can be substituted with gml:MultiGeometry
      - can be substituted with gml:MultiPoint
      - can be substituted with gml:MultiCurve
      - can be substituted with gml:MultiSurface
      - can be substituted with gml:MultiSolid
    - can be substituted with gml:AbstractGeometricPrimitive
      - can be substituted with gml:Point
      - can be substituted with gml:AbstractCurve
        can be substituted with gml:LineString
        can be substituted with gml:CompositeCurve
        can be substituted with gml:Curve
        can be substituted with gml:OrientableCurve
      - can be substituted with gml:AbstractSurface
        can be substituted with gml:Polygon
        can be substituted with gml:CompositeSurface
        can be substituted with gml:Surface
        can be substituted with gml:PolyhedralSurface
        can be substituted with gml:TriangulatedSurface
        can be substituted with gml:Tin
        can be substituted with gml:OrientableSurface
      - can be substituted with gml:AbstractSolid
        can be substituted with gml:CompositeSolid
        can be substituted with gml:Solid
    - can be substituted with gml:GeometricComplex
    - can be substituted with gml:AbstractImplicitGeometry
      - can be substituted with gml:Grid
        can be substituted with gml:RectifiedGrid