geometrybasic0d1d.xsd

由国外的一个著名的geonetwork修改而来

					<sch:rule context="gml:pos">
						<sch:extends rule="CRSLabels"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="DirectPositionType">
		<annotation>
			<documentation>DirectPosition instances hold the coordinates for a position within some coordinate reference system (CRS). Since 
			DirectPositions, as data types, will often be included in larger objects (such as geometry elements) that have references to CRS, the 
			"srsName" attribute will in general be missing, if this particular DirectPosition is included in a larger element with such a reference to a 
			CRS. In this case, the CRS is implicitly assumed to take on the value of the containing object's CRS.</documentation>
		</annotation>
		<simpleContent>
			<extension base="gml:doubleList">
				<attributeGroup ref="gml:SRSReferenceGroup"/>
			</extension>
		</simpleContent>
	</complexType>
	<!-- =========================================================== -->
	<element name="posList" type="gml:DirectPositionListType">
		<annotation>
			<appinfo>
				<sch:pattern name="Check SRS tags">
					<sch:rule context="gml:posList">
						<sch:extends rule="CRSLabels"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
			<appinfo>
				<sch:pattern name="Check Dimension">
					<sch:rule context="gml:posList">
						<sch:extends rule="Count"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="DirectPositionListType">
		<annotation>
			<documentation>DirectPositionList instances hold the coordinates for a sequence of direct positions within the same coordinate 
			reference system (CRS).</documentation>
		</annotation>
		<simpleContent>
			<extension base="gml:doubleList">
				<attributeGroup ref="gml:SRSReferenceGroup"/>
				<attribute name="count" type="positiveInteger" use="optional">
					<annotation>
						<documentation>"count" allows to specify the number of direct positions in the list. If the attribute count is present then 
						the attribute srsDimension shall be present, too.</documentation>
					</annotation>
				</attribute>
			</extension>
		</simpleContent>
	</complexType>
	<!-- ============================================================== -->
	<element name="vector" type="gml:VectorType">
		<annotation>
			<appinfo>
				<sch:pattern name="Check SRS tags">
					<sch:rule context="gml:vector">
						<sch:extends rule="CRSLabels"/>
					</sch:rule>
				</sch:pattern>
			</appinfo>
		</annotation>
	</element>
	<!-- ============================================================== -->
	<complexType name="VectorType">
		<annotation>
			<documentation>Vector instances hold the compoents for a (usually spatial) vector within some coordinate reference system (CRS). 
			Since Vectors will often be included in larger objects that have references to CRS, the "srsName" attribute may be missing. 
			In this case, the CRS is implicitly assumed to take on the value of the containing object's CRS.

			Note that this content model is the same as DirectPositionType, but is defined separately to reflect the distinct semantics, and to avoid validation problems. SJDC 2004-12-02</documentation>
		</annotation>
		<simpleContent>
			<extension base="gml:doubleList">
				<attributeGroup ref="gml:SRSReferenceGroup"/>
			</extension>
		</simpleContent>
	</complexType>
	<!-- ============================================================== -->
	<group name="geometricPositionGroup">
		<annotation>
			<documentation>A geometric position represented either by a DirectPosition or a Point.</documentation>
		</annotation>
		<choice>
			<element ref="gml:pos"/>
			<element ref="gml:pointProperty"/>
		</choice>
	</group>
	<!-- ============================================================== -->
	<group name="geometricPositionListGroup">
		<annotation>
			<documentation>A list of geometric positions represented either by a DirectPosition or a Point.</documentation>
		</annotation>
		<choice>
			<element ref="gml:posList"/>
			<group ref="gml:geometricPositionGroup" maxOccurs="unbounded"/>
		</choice>
	</group>
	<!-- ============================================================== -->
	<element name="coordinates" type="gml:CoordinatesType">
		<annotation>
			<documentation>Deprecated with GML version 3.1.0.</documentation>
		</annotation>
	</element>
	<!-- =========================================================== -->
	<!-- Envelope -->
	<!-- =========================================================== -->
	<element name="Envelope" type="gml:EnvelopeType"/>
	<!-- =========================================================== -->
	<complexType name="EnvelopeType">
		<annotation>
			<documentation>Envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions. The first direct 
			position is the "lower corner" (a coordinate position consisting of all the minimal ordinates for each dimension for all points within the envelope), 
			the second one the "upper corner" (a coordinate position consisting of all the maximal ordinates for each dimension for all points within the 
			envelope).</documentation>
		</annotation>
		<choice>
			<sequence>
				<element name="lowerCorner" type="gml:DirectPositionType"/>
				<element name="upperCorner" type="gml:DirectPositionType"/>
			</sequence>
			<element ref="gml:coord" minOccurs="2" maxOccurs="2">
				<annotation>
					<appinfo>deprecated</appinfo>
					<documentation>deprecated with GML version 3.0</documentation>
				</annotation>
			</element>
			<element ref="gml:pos" minOccurs="2" maxOccurs="2">
				<annotation>
					<appinfo>deprecated</appinfo>
					<documentation>Deprecated with GML version 3.1. Use the explicit properties "lowerCorner" and "upperCorner" instead.</documentation>
				</annotation>
			</element>
			<element ref="gml:coordinates">
				<annotation>
					<documentation>Deprecated with GML version 3.1.0. Use the explicit properties "lowerCorner" and "upperCorner" instead.</documentation>
				</annotation>
			</element>
		</choice>
		<attributeGroup ref="gml:SRSReferenceGroup"/>
	</complexType>
	<!-- =========================================================== -->
	<!-- =========================================================== -->
	<!-- =========================================================== -->
	<!--  	 	The following types and elements are deprecated and should not be used ! 	 	-->
	<element name="coord" type="gml:CoordType">
		<annotation>
			<documentation>Deprecated with GML 3.0 and included for backwards compatibility with GML 2. Use the "pos" element instead.</documentation>
		</annotation>
	</element>
	<complexType name="CoordType">
		<annotation>
			<documentation>Represents a coordinate tuple in one, two, or three dimensions. Deprecated with GML 3.0 and replaced by 
			DirectPositionType.</documentation>
		</annotation>
		<sequence>
			<element name="X" type="decimal"/>
			<element name="Y" type="decimal" minOccurs="0"/>
			<element name="Z" type="decimal" minOccurs="0"/>
		</sequence>
	</complexType>
	<!-- =========================================================== -->
	<element name="lineStringProperty" type="gml:LineStringPropertyType">
		<annotation>
			<documentation>Deprecated with GML 3.0 and included only for backwards compatibility with GML 2.0. Use "curveProperty" instead. This 
			property element either references a line string via the XLink-attributes or contains the line string element.</documentation>
		</annotation>
	</element>
	<!-- =========================================================== -->
	<complexType name="LineStringPropertyType">
		<annotation>
			<documentation>This type is deprecated with GML 3 and shall not be used. It is included for backwards compatibility with GML 2. Use 
			CurvePropertyType instead. A property that has a line string 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:LineString"/>
		</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>
	<!-- =========================================================== -->
</schema>