gml:DerivedCRS

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.

Element information

Content

• Sequence [1..1]
  from type gml:DefinitionBaseType
  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 [1..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.
  from type gml:DefinitionType
  gml:remarks [0..1]
  from type gml:AbstractCRSType
  gml:domainOfValidity [0..*]The gml:domainOfValidity property implements an association role to an EX_Extent object as encoded in ISO/TS 19139, either referencing or containing the definition of that extent.
  gml:scope [1..*]The gml:scope property provides a description of the usage, or limitations of usage, for which this CRS-related object is valid. If unknown, enter "not known".
  from type gml:AbstractGeneralDerivedCRSType
  Choice [1..1]
  from subst. group gml:conversion
  gml:conversiongml:conversion is an association role to the coordinate conversion used to define the derived CRS.
  gml:definedByConversion
  1. gml:baseCRS [1..1]gml:baseCRS is an association role to the coordinate reference system used by this derived CRS.
  2. gml:derivedCRSType [1..1]The gml:derivedCRSType property describes the type of a derived coordinate reference system. The required codeSpace attribute shall reference a source of information specifying the values and meanings of all the allowed string values for this property.
  3. Choice [1..1]
     from subst. group gml:coordinateSystem
     gml:coordinateSystemAn association role to the coordinate system used by this CRS.
     gml:usesCS

Attributes

Used in

• Type gml:ArrayAssociationType (Element gml:members)
• Type gml:CRSPropertyType (Elements gml:sourceCRS, gml:targetCRS, gml:referenceSystemRef, gml:crsRef)
• Type gml:DerivedCRSPropertyType (Element gml:derivedCRSRef)
• Type gml:DictionaryEntryType (Elements gml:definitionMember, gml:dictionaryEntry)
• Type gml:SingleCRSPropertyType (Elements gml:componentReferenceSystem, gml:baseCRS, gml:singleCRSRef, gml:includesSingleCRS)
• Type gmx:CT_CRS_PropertyType (Element gmx:crs)
• Type gsr:SC_CRS_PropertyType (Element gmd:verticalCRS)

Substitution hierarchy

• gml:AbstractObject
  • can be substituted with gml:AbstractGML
    • can be substituted with gml:Definition
      • can be substituted with gml:AbstractCRS
        • can be substituted with gml:AbstractSingleCRS
          • can be substituted with gml:AbstractGeneralDerivedCRS
            • can be substituted with gml:DerivedCRS
              • can be substituted with gmx:ML_DerivedCRS

Sample instance

<gml:DerivedCRS 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:description>...
         </gmd:description>
         <gmd:geographicElement>...
         </gmd:geographicElement>
         <gmd:temporalElement>...
         </gmd:temporalElement>
         <gmd:verticalElement>...
         </gmd:verticalElement>
      </gmd:EX_Extent>
   </gml:domainOfValidity>
   <gml:scope>string</gml:scope>
   <gml:conversion>
      <gml:Conversion gml:id="ID">
         <gml:metaDataProperty>...
         </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>...
         </gml:domainOfValidity>
         <gml:scope>string</gml:scope>
         <gml:coordinateOperationAccuracy>...
         </gml:coordinateOperationAccuracy>
         <gml:method>...
         </gml:method>
         <gml:parameterValue>...
         </gml:parameterValue>
      </gml:Conversion>
   </gml:conversion>
   <gml:baseCRS>
      <gml:ProjectedCRS gml:id="ID">
         <gml:metaDataProperty>...
         </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>...
         </gml:domainOfValidity>
         <gml:scope>string</gml:scope>
         <gml:conversion>...
         </gml:conversion>
         <gml:baseGeodeticCRS>...
         </gml:baseGeodeticCRS>
         <gml:cartesianCS>...
         </gml:cartesianCS>
      </gml:ProjectedCRS>
   </gml:baseCRS>
   <gml:derivedCRSType codeSpace="http://www.example.com/">string</gml:derivedCRSType>
   <gml:coordinateSystem>
      <gml:EllipsoidalCS gml:id="ID">
         <gml:metaDataProperty>...
         </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:axis>...
         </gml:axis>
      </gml:EllipsoidalCS>
   </gml:coordinateSystem>
</gml:DerivedCRS>