Documentation for Geography Markup Language
Definition Type: Element
Name: AbstractGeneralTransformation
Namespace: http://www.opengis.net/gml/3.2
Type: gml:AbstractGeneralTransformationType
Containing Schema: coordinateOperations.xsd
Abstract True
Documentation:
gml:AbstractGeneralTransformation is an abstract 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. The operationVersion, sourceCRS, and targetCRS proeprty elements are mandatory in a coordinate transformation. This abstract complex type is expected to be extended for well-known operation methods with many Transformation instances, in Application Schemas that define operation-method-specialized value element names and contents. This transformation uses an operation method with associated parameter values. However, operation methods and parameter values are directly associated with concrete subtypes, not with this abstract type. All concrete types derived from this type shall extend this type to include a "usesMethod" element that references one "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include one or more elements each named "uses...Value" that each use the type of an element substitutable for the "AbstractGeneralParameterValue" element.
Collapse XSD Schema Diagram:
Drilldown into targetCRS in schema coordinateoperations_xsd Drilldown into sourceCRS in schema coordinateoperations_xsd Drilldown into coordinateOperationAccuracy in schema coordinateoperations_xsd Drilldown into operationVersion in schema coordinateoperations_xsd Drilldown into scope in schema referencesystems_xsd Drilldown into domainOfValidity in schema referencesystems_xsd Drilldown into remarks in schema dictionary_xsd Drilldown into name in schema gmlbase_xsd Drilldown into identifier in schema gmlbase_xsd Drilldown into descriptionReference in schema gmlbase_xsd Drilldown into description in schema gmlbase_xsd Drilldown into metaDataProperty in schema deprecatedtypes_xsd Drilldown into id in schema gmlbase_xsd Drilldown into AbstractGeneralTransformationType in schema coordinateoperations_xsdXSD Diagram of AbstractGeneralTransformation in schema coordinateoperations_xsd (Geography Markup Language)
Collapse XSD Schema Code: 
<element name="AbstractGeneralTransformation" type="gml:AbstractGeneralTransformationType" abstract="true" substitutionGroup="gml:AbstractOperation">
    <annotation>
        <documentation>gml:AbstractGeneralTransformation is an abstract 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. The operationVersion, sourceCRS, and targetCRS proeprty elements are mandatory in a coordinate transformation.
This abstract complex type is expected to be extended for well-known operation methods with many Transformation instances, in Application Schemas that define operation-method-specialized value element names and contents. This transformation uses an operation method with associated parameter values. However, operation methods and parameter values are directly associated with concrete subtypes, not with this abstract type. All concrete types derived from this type shall extend this type to include a "usesMethod" element that references one "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include one or more elements each named "uses...Value" that each use the type of an element substitutable for the "AbstractGeneralParameterValue" element.</documentation>
    </annotation>
</element>
Collapse Child Elements:
Name Type Min Occurs Max Occurs
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
descriptionReference gml:descriptionReference 0 (1)
identifier gml:identifier 0 (1)
name gml:name 0 unbounded
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
descriptionReference gml:descriptionReference 0 (1)
identifier gml:identifier (1) (1)
name gml:name 0 unbounded
remarks gml:remarks 0 (1)
domainOfValidity gml:domainOfValidity 0 (1)
scope gml:scope (1) unbounded
operationVersion gml:operationVersion 0 (1)
coordinateOperationAccuracy gml:coordinateOperationAccuracy 0 unbounded
sourceCRS gml:sourceCRS 0 (1)
targetCRS gml:targetCRS 0 (1)
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
descriptionReference gml:descriptionReference 0 (1)
identifier gml:identifier (1) (1)
name gml:name 0 unbounded
remarks gml:remarks 0 (1)
domainOfValidity gml:domainOfValidity 0 (1)
scope gml:scope (1) unbounded
operationVersion gml:operationVersion (1) (1)
coordinateOperationAccuracy gml:coordinateOperationAccuracy 0 unbounded
sourceCRS gml:sourceCRS (1) (1)
targetCRS gml:targetCRS (1) (1)
<xs:group> gml:StandardObjectProperties (1) (1)
Collapse Child Attributes:
Name Type Default Value Use
id gml:id Required
Collapse Derivation Tree:
Collapse References:
gml:AbstractOperation
Documentation for Geography Markup Language

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