Documentation for Geography Markup Language
Definition Type: ComplexType
Name: AbstractGeneralConversionType
Namespace: http://www.opengis.net/gml
Type: gml:AbstractOperationType
Containing Schema: coordinateOperations.xsd
Abstract True
Documentation:
An abstract operation on coordinates that does not include any change of datum. The best-known example of a coordinate conversion is a map projection. The parameters describing coordinate conversions are defined rather than empirically derived. Note that some conversions have no parameters. This abstract complexType is expected to be extended for well-known operation methods with many Conversion instances, in Application Schemas that define operation-method-specialized element names and contents. This conversion uses an operation method, usually with associated parameter values. However, operation methods and parameters 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 the "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include zero or more elements each named "uses...Value" that each use the type of an element substitutable for the "_generalParameterValue" element.
Collapse XSD Schema Diagram:
Drilldown into targetCRS in schema coordinateoperations_xsd Drilldown into sourceCRS in schema coordinateoperations_xsd Drilldown into _positionalAccuracy in schema dataquality_xsd Drilldown into scope in schema referencesystems_xsd Drilldown into validArea in schema referencesystems_xsd Drilldown into operationVersion in schema coordinateoperations_xsd Drilldown into coordinateOperationID in schema coordinateoperations_xsd Drilldown into coordinateOperationName in schema coordinateoperations_xsd Drilldown into remarks in schema referencesystems_xsd Drilldown into metaDataProperty in schema gmlbase_xsd Drilldown into id in schema gmlbase_xsdXSD Diagram of AbstractGeneralConversionType in schema coordinateoperations_xsd (Geography Markup Language)
Collapse XSD Schema Code: 
<complexType name="AbstractGeneralConversionType" abstract="true">
    <annotation>
        <documentation>An abstract operation on coordinates that does not include any change of datum. The best-known example of a coordinate conversion is a map projection. The parameters describing coordinate conversions are defined rather than empirically derived. Note that some conversions have no parameters.

This abstract complexType is expected to be extended for well-known operation methods with many Conversion instances, in Application Schemas that define operation-method-specialized element names and contents. This conversion uses an operation method, usually with associated parameter values. However, operation methods and parameters 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 the "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include zero or more elements each named "uses...Value" that each use the type of an element substitutable for the "_generalParameterValue" element. </documentation>
    </annotation>
    <complexContent>
        <restriction base="gml:AbstractOperationType">
            <sequence>
                <element ref="gml:metaDataProperty" minOccurs="0" maxOccurs="unbounded" />
                <element ref="gml:remarks" minOccurs="0" />
                <element ref="gml:coordinateOperationName" />
                <element ref="gml:coordinateOperationID" minOccurs="0" maxOccurs="unbounded" />
                <element ref="gml:validArea" minOccurs="0" />
                <element ref="gml:scope" minOccurs="0" />
                <element ref="gml:_positionalAccuracy" minOccurs="0" />
            </sequence>
            <attribute ref="gml:id" use="required" />
        </restriction>
    </complexContent>
</complexType>
Collapse Child Elements:
Name Type Min Occurs Max Occurs
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
name gml:name 0 unbounded
metaDataProperty gml:metaDataProperty 0 unbounded
description gml:description 0 (1)
name gml:name (1) unbounded
metaDataProperty gml:metaDataProperty 0 unbounded
remarks gml:remarks 0 (1)
coordinateOperationName gml:coordinateOperationName (1) (1)
coordinateOperationID gml:coordinateOperationID 0 unbounded
operationVersion gml:operationVersion 0 (1)
validArea gml:validArea 0 (1)
scope gml:scope 0 (1)
_positionalAccuracy gml:_positionalAccuracy 0 (1)
sourceCRS gml:sourceCRS 0 (1)
targetCRS gml:targetCRS 0 (1)
metaDataProperty gml:metaDataProperty 0 unbounded
remarks gml:remarks 0 (1)
coordinateOperationName gml:coordinateOperationName (1) (1)
coordinateOperationID gml:coordinateOperationID 0 unbounded
validArea gml:validArea 0 (1)
scope gml:scope 0 (1)
_positionalAccuracy gml:_positionalAccuracy 0 (1)
Collapse Child Attributes:
Name Type Default Value Use
id gml:id Required
Collapse Derivation Tree:
Collapse References:
gml:_GeneralConversiongml:ConversionType,
Documentation for Geography Markup Language

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