coordinateoperations.xsd

由国外的一个著名的geonetwork修改而来

<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://www.opengis.net/gml" elementFormDefault="qualified" version="3.2.0" xml:lang="en" xmlns:gml="http://www.opengis.net/gml" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns="http://www.w3.org/2001/XMLSchema">
	<annotation>
		<appinfo source="urn:ogc:specification:gml:schema-xsd:coordinateOperations:3.2.0">coordinateOperations.xsd</appinfo>
		<documentation>See ISO/DIS 19136 13.6.
The spatial or temporal coordinate operations schema components can be divided into five logical parts, which define elements and types for XML encoding of the definitions of:
-	Multiple abstract coordinate operations
-	Multiple concrete types of coordinate operations, including Transformations and Conversions
-	Abstract and concrete parameter values and groups
-	Operation methods
-	Abstract and concrete operation parameters and groups
These schema component encodes the Coordinate Operation package of the UML Model for ISO 19111 Clause 11.</documentation>
	</annotation>
	<include schemaLocation="referenceSystems.xsd"/>
	<include schemaLocation="measures.xsd"/>
	<import namespace="http://www.isotc211.org/2005/gmd" schemaLocation="../gmd/gmd.xsd"/>
	<element name="AbstractCoordinateOperation" type="gml:AbstractCoordinateOperationType" abstract="true" substitutionGroup="gml:Definition">
		<annotation>
			<documentation>gml:AbstractCoordinateOperation is a mathematical operation on coordinates that transforms or converts coordinates to another coordinate reference system. Many but not all coordinate operations (from CRS A to CRS B) also uniquely define the inverse operation (from CRS B to CRS A). In some cases, the operation method algorithm for the inverse operation is the same as for the forward algorithm, but the signs of some operation parameter values shall be reversed. In other cases, different algorithms are required for the forward and inverse operations, but the same operation parameter values are used. If (some) entirely different parameter values are needed, a different coordinate operation shall be defined.
The optional coordinateOperationAccuracy property elements provide estimates of the impact of this coordinate operation on point position accuracy.</documentation>
		</annotation>
	</element>
	<complexType name="AbstractCoordinateOperationType" abstract="true">
		<complexContent>
			<extension base="gml:IdentifiedObjectType">
				<sequence>
					<element ref="gml:domainOfValidity" minOccurs="0"/>
					<element ref="gml:scope" maxOccurs="unbounded"/>
					<element ref="gml:operationVersion" minOccurs="0"/>
					<element ref="gml:coordinateOperationAccuracy" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:sourceCRS" minOccurs="0"/>
					<element ref="gml:targetCRS" minOccurs="0"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<element name="operationVersion" type="string">
		<annotation>
			<documentation>gml:operationVersion is the 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.</documentation>
		</annotation>
	</element>
	<element name="coordinateOperationAccuracy">
		<annotation>
			<documentation>gml:coordinateOperationAccuracy is an association role to a DQ_PositionalAccuracy object as encoded in ISO/TS 19139, either referencing or containing the definition of that positional accuracy. That object contains an estimate of the impact of this coordinate operation on point accuracy. That is, it gives position error estimates for the target coordinates of this coordinate operation, assuming no errors in the source coordinates.</documentation>
		</annotation>
		<complexType>
			<sequence minOccurs="0">
				<element ref="gmd:AbstractDQ_PositionalAccuracy"/>
			</sequence>
			<attributeGroup ref="gml:AssociationAttributeGroup"/>
		</complexType>
	</element>
	<element name="sourceCRS" type="gml:CRSPropertyType">
		<annotation>
			<documentation>gml:sourceCRS is an association role to the source CRS (coordinate reference system) of this coordinate operation.</documentation>
		</annotation>
	</element>
	<element name="targetCRS" type="gml:CRSPropertyType">
		<annotation>
			<documentation>gml:targetCRS is an association role to the target CRS (coordinate reference system) of this coordinate operation.</documentation>
		</annotation>
	</element>
	<complexType name="CoordinateOperationPropertyType">
		<annotation>
			<documentation>gml:CoordinateOperationPropertyType is a property type for association roles to a coordinate operation, either referencing or containing the definition of that coordinate operation.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractCoordinateOperation"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<element name="coordinateOperationRef" type="gml:CoordinateOperationPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<element name="AbstractSingleOperation" type="gml:AbstractCoordinateOperationType" abstract="true" substitutionGroup="gml:AbstractCoordinateOperation">
		<annotation>
			<documentation>gml:AbstractSingleOperation is a single (not concatenated) coordinate operation.</documentation>
		</annotation>
	</element>
	<complexType name="SingleOperationPropertyType">
		<annotation>
			<documentation>gml:SingleOperationPropertyType is a property type for association roles to a single operation, either referencing or containing the definition of that single operation.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractSingleOperation"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<element name="singleOperationRef" type="gml:SingleOperationPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<element name="AbstractOperation" type="gml:AbstractCoordinateOperationType" abstract="true" substitutionGroup="gml:AbstractSingleOperation">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<complexType name="OperationPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractOperation"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<element name="operationRef" type="gml:OperationPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<element name="AbstractGeneralConversion" type="gml:AbstractGeneralConversionType" abstract="true" substitutionGroup="gml:AbstractOperation">
		<annotation>
			<documentation>gm:AbstractGeneralConversion is 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. The operationVersion, sourceCRS, and targetCRS elements are omitted in a coordinate conversion.
This abstract complex type is expected to be extended for well-known operation methods with many Conversion instances, in GML 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 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 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 "AbstractGeneralParameterValue" element.</documentation>
		</annotation>
	</element>
	<complexType name="AbstractGeneralConversionType" abstract="true">
		<complexContent>
			<restriction base="gml:AbstractCoordinateOperationType">
				<sequence>
					<element ref="gml:metaDataProperty" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:description" minOccurs="0"/>
					<element ref="gml:descriptionReference" minOccurs="0"/>
					<element ref="gml:identifier"/>
					<element ref="gml:name" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:remarks" minOccurs="0"/>
					<element ref="gml:domainOfValidity" minOccurs="0"/>
					<element ref="gml:scope" maxOccurs="unbounded"/>
					<element ref="gml:coordinateOperationAccuracy" minOccurs="0" maxOccurs="unbounded"/>
				</sequence>
				<attribute ref="gml:id" use="required"/>
			</restriction>
		</complexContent>
	</complexType>
	<complexType name="GeneralConversionPropertyType">
		<annotation>
			<documentation>gml:GeneralConversionPropertyType is a property type for association roles to a general conversion, either referencing or containing the definition of that conversion.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractGeneralConversion"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<element name="generalConversionRef" type="gml:GeneralConversionPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<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>
	<complexType name="AbstractGeneralTransformationType" abstract="true">
		<complexContent>
			<restriction base="gml:AbstractCoordinateOperationType">
				<sequence>
					<element ref="gml:metaDataProperty" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:description" minOccurs="0"/>
					<element ref="gml:descriptionReference" minOccurs="0"/>
					<element ref="gml:identifier"/>
					<element ref="gml:name" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:remarks" minOccurs="0"/>
					<element ref="gml:domainOfValidity" minOccurs="0"/>
					<element ref="gml:scope" maxOccurs="unbounded"/>
					<element ref="gml:operationVersion"/>
					<element ref="gml:coordinateOperationAccuracy" minOccurs="0" maxOccurs="unbounded"/>
					<element ref="gml:sourceCRS"/>
					<element ref="gml:targetCRS"/>
				</sequence>
				<attribute ref="gml:id" use="required"/>
			</restriction>
		</complexContent>
	</complexType>
	<complexType name="GeneralTransformationPropertyType">
		<annotation>
			<documentation>gml:GeneralTransformationPropertyType is a property type for association roles to a general transformation, either referencing or containing the definition of that transformation.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractGeneralTransformation"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<element name="generalTransformationRef" type="gml:GeneralTransformationPropertyType">
		<annotation>
			<appinfo>deprecated</appinfo>
		</annotation>
	</element>
	<element name="ConcatenatedOperation" type="gml:ConcatenatedOperationType" substitutionGroup="gml:AbstractCoordinateOperation"/>
	<complexType name="ConcatenatedOperationType">
		<annotation>
			<documentation>gml:ConcatenatedOperation is an ordered sequence of two or more coordinate operations. This sequence of operations is constrained by the requirement that the source coordinate reference system of step (n+1) must be the same as the target coordinate reference system of step (n). The source coordinate reference system of the first step and the target coordinate reference system of the last step are the source and target coordinate reference system associated with the concatenated operation. Instead of a forward operation, an inverse operation may be used for one or more of the operation steps mentioned above, if the inverse operation is uniquely defined by the forward operation.
The gml:coordOperation property elements are an ordered sequence of associations to the two or more operations used by this concatenated operation. The AggregationAttributeGroup should be used to specify that the coordOperation associations are ordered.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateOperationType">
				<sequence>
					<element ref="gml:coordOperation" minOccurs="2" maxOccurs="unbounded"/>
				</sequence>
				<attributeGroup ref="gml:AggregationAttributeGroup"/>
			</extension>
		</complexContent>
	</complexType>
	<element name="coordOperation" type="gml:CoordinateOperationPropertyType">
		<annotation>
			<documentation>gml:coordOperation is an association role to a coordinate operation.</documentation>
		</annotation>
	</element>
	<element name="usesSingleOperation" type="gml:CoordinateOperationPropertyType" substitutionGroup="gml:coordOperation">