gml:TransformationType
A concrete operation on coordinates that usually includes a change of datum. The parameters of a coordinate transformation are empirically derived from data containing the coordinates of a series of points in both coordinate reference systems. This computational process is usually "over-determined", allowing derivation of error (or accuracy) estimates for the transformation. Also, the stochastic nature of the parameters may result in multiple (different) versions of the same coordinate transformation. This concrete complexType can be used for all operation methods, without using an Application Schema that defines operation-method-specialized element names and contents, especially for methods with only one Transformation instance.
Complex type information
Namespace: http://niem.gov/niem/external/ogc-gml/3.1.1/dhs-gmo/1.0.0
Schema document: external/ogc-gml/3.1.1/dhs-gmo/1.0.0/gml.xsd
Content
- Sequence [1..1]
- gml:metaDataProperty [0..*] Contains or refers to a metadata package that contains metadata properties.
- gml:coordinateOperationName [1..1] The name by which this coordinate operation is identified.
- gml:coordinateOperationID [0..*] An identification of a coordinate operation.
- gml:remarks [0..1] Information about this object or code. Contains text or refers to external text.
- gml:operationVersion [1..1] Version of the coordinate transformation (i.e., instantiation due to the stochastic nature of the parameters). Mandatory when describing a transformation, and should not be supplied for a conversion.
- gml:validArea [0..1] Area or region in which this CRS object is valid.
- gml:scope [0..1] Description of domain of usage, or limitations of usage, for which this CRS object is valid.
- gml:_positionalAccuracyAbstract [0..*]
- gml:sourceCRS [1..1] Association to the source CRS (coordinate reference system) of this coordinate operation.
- gml:targetCRS [1..1] Association to the target CRS (coordinate reference system) of this coordinate operation. For constraints on multiplicity of "sourceCRS" and "targetCRS", see UML model of Coordinate Operation package in OGC Abstract Specification topic 2.
- gml:usesMethod [1..1] Association to the operation method used by this coordinate operation.
- gml:usesValue [0..*] Unordered set of composition associations to the set of parameter values used by this transformation operation.
from type gml:AbstractGeneralTransformationTypefrom subst. group gml:_positionalAccuracy
Attributes
| Name | Occ | Type | Description | Notes |
|---|---|---|---|---|
| gml:id | [1..1] | xsd:ID | from type gml:AbstractGeneralTransformationType |
Used by
- Element gml:Transformation
- Element gmx:ML_Transformation via derived type gmx:ML_Transformation_Type