gml:AbstractGeometryType
All geometry elements are derived directly or indirectly from this abstract supertype. A geometry element may
have an identifying attribute ("gml:id"), a name (attribute "name") and a description (attribute "description"). It may be associated
with a spatial reference system (attribute "srsName"). The following rules shall be adhered: - 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 _Geometry.Complex type information
Namespace: http://www.opengis.net/gml
Schema document: external/have/1.0/gml-oasis.xsd
Properties: Abstract
Content
- Empty content
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| gml:id | [0..1] | xsd:ID | Database handle for the object. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs. An external identifier for the object in the form of a URI may be constructed using standard XML and XPointer methods. This is done by concatenating the URI for the document, a fragment separator, and the value of the id attribute. | from type gml:AbstractGMLType |
| srsName | [0..1] | xsd:anyURI | In general this reference points to a CRS instance of gml:CoordinateReferenceSystemType (see coordinateReferenceSystems.xsd). For well known references it is not required that the CRS description exists at the location the URI points to. If no srsName attribute is given, the CRS must be specified as part of the larger context this geometry element is part of, e.g. a geometric element like point, curve, etc. It is expected that this attribute will be specified at the direct position level only in rare cases. | from group gml:SRSReferenceGroup |
| srsDimension | [0..1] | xsd:positiveInteger | The "srsDimension" is the length of coordinate sequence (the number of entries in the list). This dimension is specified by the coordinate reference system. When the srsName attribute is omitted, this attribute shall be omitted. | from group gml:SRSReferenceGroup |
| axisLabels | [0..1] | gml:NCNameList | Ordered list of labels for all the axes of this CRS. The gml:axisAbbrev value should be used for these axis labels, after spaces and forbiddden characters are removed. When the srsName attribute is included, this attribute is optional. When the srsName attribute is omitted, this attribute shall also be omitted. | from group gml:SRSInformationGroup |
| uomLabels | [0..1] | gml:NCNameList | Ordered list of unit of measure (uom) labels for all the axes of this CRS. The value of the string in the gml:catalogSymbol should be used for this uom labels, after spaces and forbiddden characters are removed. When the axisLabels attribute is included, this attribute shall also be included. When the axisLabels attribute is omitted, this attribute shall also be omitted. | from group gml:SRSInformationGroup |
Used by
- Element gml:_Geometry
- Element gml:Curve via derived type gml:CurveType
- Element gml:LineString via derived type gml:LineStringType
- Element gml:LinearRing via derived type gml:LinearRingType
- Element gml:Point via derived type gml:PointType
- Element gml:Polygon via derived type gml:PolygonType
- Element gml:_Curve via derived type gml:AbstractCurveType
- Element gml:_GeometricPrimitive via derived type gml:AbstractGeometricPrimitiveType
- Element gml:_Ring via derived type gml:AbstractRingType
- Element gml:_Surface via derived type gml:AbstractSurfaceType
Type inheritance chain
- gml:AbstractGMLType
- gml:AbstractGeometryType
- extended by gml:AbstractGeometricPrimitiveType
- extended by gml:PointType
- extended by gml:AbstractCurveType
- extended by gml:LineStringType
- extended by gml:CurveType
- extended by gml:AbstractSurfaceType
- extended by gml:PolygonType
- extended by gml:AbstractRingType
- extended by gml:LinearRingType
- extended by gml:AbstractGeometricPrimitiveType
- gml:AbstractGeometryType