gml:datumRef

Element information

Content

• Choice [0..1]
  from subst. group gml:AbstractDatum
  gml:GeodeticDatumgml:GeodeticDatum is a geodetic datum defines the precise location and orientation in 3-dimensional space of a defined ellipsoid (or sphere), or of a Cartesian coordinate system centered in this ellipsoid (or sphere).
  from subst. group gml:GeodeticDatum
  gmx:ML_GeodeticDatum
  gml:EngineeringDatumgml:EngineeringDatum defines the origin of an engineering coordinate reference system, and is used in a region around that origin. This origin may be fixed with respect to the earth (such as a defined point at a construction site), or be a defined point on a moving vehicle (such as on a ship or satellite).
  from subst. group gml:EngineeringDatum
  gmx:ML_EngineeringDatum
  gml:ImageDatumgml:ImageDatum defines the origin of an image coordinate reference system, and is used in a local context only. For an image datum, the anchor definition is usually either the centre of the image or the corner of the image. For more information, see ISO 19111 B.3.5.
  from subst. group gml:ImageDatum
  gmx:ML_ImageDatum
  gml:VerticalDatumgml:VerticalDatum is a textual description and/or a set of parameters identifying a particular reference level surface used as a zero-height surface, including its position with respect to the Earth for any of the height types recognized by this International Standard.
  from subst. group gml:VerticalDatum
  gmx:ML_VerticalDatum
  gml:TemporalDatumA gml:TemporalDatum defines the origin of a Temporal Reference System. This type omits the "anchorDefinition" and "realizationEpoch" elements and adds the "origin" element with the dateTime type.
  from subst. group gml:TemporalDatum
  gmx:ML_TemporalDatum

Attributes

Sample instance

<gml:datumRef>
   <gml:GeodeticDatum gml:id="ID">
      <gml:metaDataProperty>
         <gml:GenericMetaData>Any text, intermingled with:
            <!--any element-->
         </gml:GenericMetaData>
      </gml:metaDataProperty>
      <gml:description>string</gml:description>
      <gml:descriptionReference/>
      <gml:identifier codeSpace="http://www.example.com/">string</gml:identifier>
      <gml:name>string</gml:name>
      <gml:remarks>string</gml:remarks>
      <gml:domainOfValidity>
         <gmd:EX_Extent>............
         </gmd:EX_Extent>
      </gml:domainOfValidity>
      <gml:scope>string</gml:scope>
      <gml:anchorDefinition>string</gml:anchorDefinition>
      <gml:realizationEpoch>2000-01-01</gml:realizationEpoch>
      <gml:primeMeridian>
         <gml:PrimeMeridian gml:id="ID">...
         </gml:PrimeMeridian>
      </gml:primeMeridian>
      <gml:ellipsoid>
         <gml:Ellipsoid gml:id="ID">...
         </gml:Ellipsoid>
      </gml:ellipsoid>
   </gml:GeodeticDatum>
</gml:datumRef>