geometrybasic0d1d.xsd

由国外的一个著名的geonetwork修改而来

				<sequence>
					<choice>
						<annotation>
							<documentation>GML supports two different ways to specify the direct poisiton of a point. 1. The "pos" element is of type 
							DirectPositionType.</documentation>
						</annotation>
						<element ref="gml:pos"/>
						<element ref="gml:coordinates">
							<annotation>
								<documentation>Deprecated with GML version 3.1.0 for coordinates with ordinate values that are numbers. Use "pos" 
								instead. The "coordinates" element shall only be used for coordinates with ordinates that require a string 
								representation, e.g. DMS representations.</documentation>
							</annotation>
						</element>
						<element ref="gml:coord">
							<annotation>
								<documentation>Deprecated with GML version 3.0. Use "pos" instead. The "coord" element is included for 
								backwards compatibility with GML 2.</documentation>
							</annotation>
						</element>
					</choice>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<!-- ============================================================== -->
	<element name="pointProperty" type="gml:PointPropertyType">
		<annotation>
			<appinfo>
				<sch:pattern name="Check either href or content not both">
					<sch:rule context="gml:pointProperty">
						<sch:extends rule="hrefOrContent"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
			<documentation>This property element either references a point via the XLink-attributes or contains the point element. pointProperty 
			is the predefined property which can be used by GML Application Schemas whenever a GML Feature has a property with a value that 
			is substitutable for Point.</documentation>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<element name="pointRep" type="gml:PointPropertyType">
		<annotation>
			<documentation>Deprecated with GML version 3.1.0. Use "pointProperty" instead. Included for backwards compatibility with GML 3.0.0.</documentation>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="PointPropertyType">
		<annotation>
			<documentation>A property that has a point as its value domain can either be an appropriate geometry element encapsulated in an 
			element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located 
			elsewhere in the same document). Either the reference or the contained element must be given, but neither both nor none.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:Point"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup">
			<annotation>
				<documentation>This attribute group includes the XLink attributes (see xlinks.xsd). XLink is used in GML to reference remote 
				resources (including those elsewhere in the same document). A simple link element can be constructed by including a specific 
				set of XLink attributes. The XML Linking Language (XLink) is currently a Proposed Recommendation of the World Wide Web Consortium. 
				XLink allows elements to be inserted into XML documents so as to create sophisticated links between resources; such links can be 
				used to reference remote properties. A simple link element can be used to implement pointer functionality, and this functionality has 
				been built into various GML 3 elements by including the gml:AssociationAttributeGroup.</documentation>
			</annotation>
		</attributeGroup>
	</complexType>
	<!-- ============================================================== -->
	<element name="pointArrayProperty" type="gml:PointArrayPropertyType"/>
	<!-- =========================================================== -->
	<complexType name="PointArrayPropertyType">
		<annotation>
			<documentation>A container for an array of points. The elements are always contained in the array property, referencing geometry 
			elements or arrays of geometry elements is not supported.</documentation>
		</annotation>
		<sequence>
			<element ref="gml:Point" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
	</complexType>
	<!-- =========================================================== -->
	<!-- primitive geometry objects (1-dimensional) -->
	<!-- ============================================================== -->
	<element name="_Curve" type="gml:AbstractCurveType" abstract="true" substitutionGroup="gml:_GeometricPrimitive">
		<annotation>
			<documentation>The "_Curve" element is the abstract head of the substituition group for all (continuous) curve elements.</documentation>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="AbstractCurveType" abstract="true">
		<annotation>
			<documentation>An abstraction of a curve to support the different levels of complexity. The curve can always be viewed as a geometric 
			primitive, i.e. is continuous.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractGeometricPrimitiveType"/>
		</complexContent>
	</complexType>
	<!-- ============================================================== -->
	<element name="curveProperty" type="gml:CurvePropertyType">
		<annotation>
			<appinfo>
				<sch:pattern name="Check either href or content not both">
					<sch:rule context="gml:curveProperty">
						<sch:extends rule="hrefOrContent"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
			<documentation>This property element either references a curve via the XLink-attributes or contains the curve element. curveProperty is the 
			predefined property which can be used by GML Application Schemas whenever a GML Feature has a property with a value that is 
			substitutable for _Curve.</documentation>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="CurvePropertyType">
		<annotation>
			<documentation>A property that has a curve as its value domain can either be an appropriate geometry element encapsulated in an 
			element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere 
			in the same document). Either the reference or the contained element must be given, but neither both nor none.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:_Curve"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup">
			<annotation>
				<documentation>This attribute group includes the XLink attributes (see xlinks.xsd). XLink is used in GML to reference remote 
				resources (including those elsewhere in the same document). A simple link element can be constructed by including a specific 
				set of XLink attributes. The XML Linking Language (XLink) is currently a Proposed Recommendation of the World Wide Web Consortium. 
				XLink allows elements to be inserted into XML documents so as to create sophisticated links between resources; such links can be used 
				to reference remote properties. A simple link element can be used to implement pointer functionality, and this functionality has been built 
				into various GML 3 elements by including the gml:AssociationAttributeGroup.</documentation>
			</annotation>
		</attributeGroup>
	</complexType>
	<!-- ============================================================== -->
	<element name="curveArrayProperty" type="gml:CurveArrayPropertyType"/>
	<!-- =========================================================== -->
	<complexType name="CurveArrayPropertyType">
		<annotation>
			<documentation>A container for an array of curves. The elements are always contained in the array property, referencing geometry elements 
			or arrays of geometry elements is not supported.</documentation>
		</annotation>
		<sequence>
			<element ref="gml:_Curve" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
	</complexType>
	<!-- =========================================================== -->
	<element name="LineString" type="gml:LineStringType" substitutionGroup="gml:_Curve"/>
	<!-- =========================================================== -->
	<complexType name="LineStringType">
		<annotation>
			<documentation>A LineString is a special curve that consists of a single segment with linear interpolation. It is defined by two or more coordinate 
			tuples, with linear interpolation between them. It is backwards compatible with the LineString of GML 2, GM_LineString of ISO 19107 is 
			implemented by LineStringSegment.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractCurveType">
				<sequence>
					<choice>
						<annotation>
							<documentation>GML supports two different ways to specify the control points of a line string. 1. A sequence of "pos" 
							(DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part 
							of this curve, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference 
							another point defined outside of this curve (reuse of existing points). 2. The "posList" element allows for a compact way to 
							specifiy the coordinates of the control points, if all control points are in the same coordinate reference systems and belong 
							to this curve only. The number of direct positions in the list must be at least two.</documentation>
						</annotation>
						<choice minOccurs="2" maxOccurs="unbounded">
							<element ref="gml:pos"/>
							<element ref="gml:pointProperty"/>
							<element ref="gml:pointRep">
								<annotation>
									<documentation>Deprecated with GML version 3.1.0. Use "pointProperty" instead. Included for backwards compatibility 
									with GML 3.0.0.</documentation>
								</annotation>
							</element>
							<element ref="gml:coord">
								<annotation>
									<documentation>Deprecated with GML version 3.0. Use "pos" instead. The "coord" element is included for backwards 
									compatibility with GML 2.</documentation>
								</annotation>
							</element>
						</choice>
						<element ref="gml:posList"/>
						<element ref="gml:coordinates">
							<annotation>
								<documentation>Deprecated with GML version 3.1.0. Use "posList" instead.</documentation>
							</annotation>
						</element>
					</choice>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<!-- ============================================================== -->
	<!-- positions -->
	<!-- =========================================================== -->
	<element name="pos" type="gml:DirectPositionType">
		<annotation>
			<appinfo>
				<sch:pattern name="Check SRS tags">