coordinatesystems.xsd

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			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="cartesianCSRef" type="gml:CartesianCSRefType"/>
	<!-- =================================================== -->
	<complexType name="CartesianCSRefType">
		<annotation>
			<documentation>Association to a Cartesian coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:CartesianCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="VerticalCS" type="gml:VerticalCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="VerticalCSType">
		<annotation>
			<documentation>A one-dimensional coordinate system used to record the heights (or depths) of points. Such a coordinate system is usually dependent on the Earth's gravity field, perhaps loosely as when atmospheric pressure is the basis for the vertical coordinate system axis. A VerticalCS shall have one usesAxis association. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="verticalCSRef" type="gml:VerticalCSRefType"/>
	<!-- =================================================== -->
	<complexType name="VerticalCSRefType">
		<annotation>
			<documentation>Association to a vertical coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:VerticalCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="TemporalCS" type="gml:TemporalCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="TemporalCSType">
		<annotation>
			<documentation>A one-dimensional coordinate system containing a single time axis, used to describe the temporal position of a point in the specified time units from a specified time origin. A TemporalCS shall have one usesAxis association. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="temporalCSRef" type="gml:TemporalCSRefType"/>
	<!-- =================================================== -->
	<complexType name="TemporalCSRefType">
		<annotation>
			<documentation>Association to a temporal coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:TemporalCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="LinearCS" type="gml:LinearCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="LinearCSType">
		<annotation>
			<documentation>A one-dimensional coordinate system that consists of the points that lie on the single axis described. The associated ordinate is the distance from the specified origin to the point along the axis. Example: usage of the line feature representing a road to describe points on or along that road. A LinearCS shall have one usesAxis association. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="linearCSRef" type="gml:LinearCSRefType"/>
	<!-- =================================================== -->
	<complexType name="LinearCSRefType">
		<annotation>
			<documentation>Association to a linear coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:LinearCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="UserDefinedCS" type="gml:UserDefinedCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="UserDefinedCSType">
		<annotation>
			<documentation>A two- or three-dimensional coordinate system that consists of any combination of coordinate axes not covered by any other coordinate system type. An example is a multilinear coordinate system which contains one coordinate axis that may have any 1-D shape which has no intersections with itself. This non-straight axis is supplemented by one or two straight axes to complete a 2 or 3 dimensional coordinate system. The non-straight axis is typically incrementally straight or curved. A UserDefinedCS shall have two or three usesAxis associations. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="userDefinedCSRef" type="gml:UserDefinedCSRefType"/>
	<!-- =================================================== -->
	<complexType name="UserDefinedCSRefType">
		<annotation>
			<documentation>Association to a user-defined coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:UserDefinedCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="SphericalCS" type="gml:SphericalCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="SphericalCSType">
		<annotation>
			<documentation>A three-dimensional coordinate system with one distance measured from the origin and two angular coordinates. Not to be confused with an ellipsoidal coordinate system based on an ellipsoid "degenerated" into a sphere. A SphericalCS shall have three usesAxis associations. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="sphericalCSRef" type="gml:SphericalCSRefType"/>
	<!-- =================================================== -->
	<complexType name="SphericalCSRefType">
		<annotation>
			<documentation>Association to a spherical coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:SphericalCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="PolarCS" type="gml:PolarCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="PolarCSType">
		<annotation>
			<documentation>A two-dimensional coordinate system in which position is specified by the distance from the origin and the angle between the line from the origin to a point and a reference direction. A PolarCS shall have two usesAxis associations. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="polarCSRef" type="gml:PolarCSRefType"/>
	<!-- =================================================== -->
	<complexType name="PolarCSRefType">
		<annotation>
			<documentation>Association to a polar coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:PolarCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="CylindricalCS" type="gml:CylindricalCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="CylindricalCSType">
		<annotation>
			<documentation>A three-dimensional coordinate system consisting of a polar coordinate system extended by a straight coordinate axis perpendicular to the plane spanned by the polar coordinate system. A CylindricalCS shall have three usesAxis associations. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="cylindricalCSRef" type="gml:CylindricalCSRefType"/>
	<!-- =================================================== -->
	<complexType name="CylindricalCSRefType">
		<annotation>
			<documentation>Association to a cylindrical coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:CylindricalCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
	<element name="ObliqueCartesianCS" type="gml:ObliqueCartesianCSType" substitutionGroup="gml:_CoordinateSystem"/>
	<!-- =================================================== -->
	<complexType name="ObliqueCartesianCSType">
		<annotation>
			<documentation>A two- or three-dimensional coordinate system with straight axes that are not necessarily orthogonal. An ObliqueCartesianCS shall have two or three usesAxis associations. </documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCoordinateSystemType"/>
		</complexContent>
	</complexType>
	<!-- =================================================== -->
	<element name="obliqueCartesianCSRef" type="gml:ObliqueCartesianCSRefType"/>
	<!-- =================================================== -->
	<complexType name="ObliqueCartesianCSRefType">
		<annotation>
			<documentation>Association to an oblique-Cartesian coordinate system, either referencing or containing the definition of that coordinate system. </documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:ObliqueCartesianCS"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- =================================================== -->
</schema>