gml:sourceCRS

gml:sourceCRS is an association role to the source CRS (coordinate reference system) of this coordinate operation.

Element information

Content

• Choice [1..1]
  from subst. group gml:AbstractCRS
  from subst. group gml:AbstractSingleCRS
  from subst. group gml:AbstractGeneralDerivedCRS
  gml:ProjectedCRS [0..1]    gml:ProjectedCRS is a 2D coordinate reference system used to approximate the shape of the earth on a planar surface, but in such a way that the distortion that is inherent to the approximation is carefully controlled and known. Distortion correction is commonly applied to calculated bearings and distances to produce values that are a close match to actual field values.
  gml:DerivedCRS [0..1]    gml:DerivedCRS is a single coordinate reference system that is defined by its coordinate conversion from another single coordinate reference system known as the base CRS. The base CRS can be a projected coordinate reference system, if this DerivedCRS is used for a georectified grid coverage as described in ISO 19123, Clause 8.
  gml:GeodeticCRS [0..1]    
  gml:VerticalCRS [0..1]    gml:VerticalCRS is a 1D coordinate reference system used for recording heights or depths. Vertical CRSs make use of the direction of gravity to define the concept of height or depth, but the relationship with gravity may not be straightforward. By implication, ellipsoidal heights (h) cannot be captured in a vertical coordinate reference system. Ellipsoidal heights cannot exist independently, but only as an inseparable part of a 3D coordinate tuple defined in a geographic 3D coordinate reference system.
  gml:EngineeringCRS [0..1]    gml:EngineeringCRS is a contextually local coordinate reference system which can be divided into two broad categories: - earth-fixed systems applied to engineering activities on or near the surface of the earth; - CRSs on moving platforms such as road vehicles, vessels, aircraft, or spacecraft, see ISO 19111 8.3.
  gml:ImageCRS [0..1]    gml:ImageCRS is an engineering coordinate reference system applied to locations in images. Image coordinate reference systems are treated as a separate sub-type because the definition of the associated image datum contains two attributes not relevant to other engineering datums.
  gml:TemporalCRS [0..1]    gml:TemporalCRS is a 1D coordinate reference system used for the recording of time.
  gml:GeographicCRS [0..1]    deprecated
  gml:GeocentricCRS [0..1]    deprecated
  gml:CompoundCRS [0..1]    gml:CompundCRS is a coordinate reference system describing the position of points through two or more independent coordinate reference systems. It is associated with a non-repeating sequence of two or more instances of SingleCRS.

Attributes

Used in

• Type gml:AbstractGeneralTransformationType (Element gml:AbstractGeneralTransformation)
• Type gml:ConcatenatedOperationType via extension of gml:AbstractCoordinateOperationType (Element gml:ConcatenatedOperation)
• Type gml:PassThroughOperationType via extension of gml:AbstractCoordinateOperationType (Element gml:PassThroughOperation)
• Type gml:TransformationType via extension of gml:AbstractGeneralTransformationType (Element gml:Transformation)
• Type gml:AbstractCoordinateOperationType (Elements gml:AbstractCoordinateOperation, gml:AbstractSingleOperation, gml:AbstractOperation)

Sample instance

<gml:sourceCRS>
   <gml:ProjectedCRS gml:id="ID">
      <gml:metaDataProperty>
         <gml:GenericMetaData>Any text, intermingled with:...
         </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:conversion>
         <gml:Conversion gml:id="ID">...
         </gml:Conversion>
      </gml:conversion>
      <gml:baseGeodeticCRS>
         <gml:GeodeticCRS gml:id="ID">...
         </gml:GeodeticCRS>
      </gml:baseGeodeticCRS>
      <gml:cartesianCS>
         <gml:CartesianCS gml:id="ID">...
         </gml:CartesianCS>
      </gml:cartesianCS>
   </gml:ProjectedCRS>
</gml:sourceCRS>