mirror of https://github.com/tdwg/dwc.git
120 lines
7.0 KiB
XML
120 lines
7.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!-- ==================================================================== -->
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<!-- Introduction -->
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<!-- ==================================================================== -->
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<!-- TDWG Simple GML Profile -->
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<!-- The following schema document contains only those element -->
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<!-- declarations from GML that are required to validate a GML -->
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<!-- application schema that complies with this profile. -->
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<!-- GML application schemas can ensure compliance with this profile by -->
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<!-- importing this schema document rather than schema documents from the -->
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<!-- standard GML 3.1.1 distribution. -->
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<!-- History: -->
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<!-- version 0.5 2007-02-14 P. Dibner, J. Wieczorek, J. de la Torre -->
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<!-- Status: -->
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<!-- Ready for testing. -->
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<!-- CircleByCenterPoint doesn't currently validate importing only -->
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<!-- gml:geometryPrimitives, geometryAggregates, feature. Fix this and -->
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<!-- remove full gml import. -->
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<!-- See http://wiki.tdwg.org for current status of this standard. -->
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<!-- ==================================================================== -->
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<!-- Schema -->
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<!-- JRW: As a profile, this namespace should substitute for gml -->
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<!-- ==================================================================== -->
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<xs:schema
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targetNamespace="http://rs.tdwg.org/dwc/tdwggml"
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xmlns="http://rs.tdwg.org/dwc/tdwggml"
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xmlns:tdwggml="http://rs.tdwg.org/dwc/tdwggml"
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xmlns:gml="http://www.opengis.net/gml"
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xmlns:xs="http://www.w3.org/2001/XMLSchema"
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elementFormDefault="qualified"
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version="0.5">
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<!-- ============================================================== -->
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<!-- Includes -->
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<!-- ============================================================== -->
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<xs:include schemaLocation="http://rs.tdwg.org/dwc/tdwg_basetypes.xsd"/>
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<!-- ============================================================== -->
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<!-- Imports -->
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<!-- ============================================================== -->
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<!-- <xs:import namespace="http://www.opengis.net/gml"
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schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/gml.xsd"/>
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-->
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<!-- JRW: Import only the minimal subset of gml required to support tdwg spatial vocabulary. -->
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<xs:import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/feature.xsd"/>
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<xs:import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/geometryPrimitives.xsd"/>
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<xs:import namespace="http://www.opengis.net/gml" schemaLocation="http://schemas.opengis.net/gml/3.1.1/base/geometryAggregates.xsd"/>
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<!-- ============================================================== -->
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<!-- Elements -->
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<!-- ============================================================== -->
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<!-- Collection Location Geometric Properties -->
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<!-- In the examples below, dimension is assumed to be 2 and the coordinate reference system is assumed to be understood. However, other choices can be made per the GML specification. -->
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<xs:element name="LocationPointRadius" type="pointRadiusType" substitutionGroup="gml:_Feature"
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nillable="true"/>
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<xs:element name="LocationFootprint" type="footprintType" substitutionGroup="gml:_Feature"
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nillable="true"/>
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<xs:element name="OccurrenceFeature" type="OccurrenceFeatureType"/>
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<!-- ============================================================== -->
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<!-- Types -->
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<!-- ============================================================== -->
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<xs:complexType name="pointRadiusType">
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<!-- The point-radius feature type is meant to be able to capture the point-radius
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representation of a place as described in Wieczorek et al. (IJGIS 18:8 pp745-767).
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This representation uses a point for the centroid of the geometry describing the
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place within which an event is thought to have occurred, and a distance from that
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point to the furthest point describing that underlying geometry. -->
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<xs:complexContent>
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<xs:extension base="gml:AbstractFeatureType">
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<xs:sequence>
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<xs:element name="PointRadius" type="gml:CircleByCenterPointType" minOccurs="0"
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maxOccurs="1"/>
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<xs:element name="PointRadiusSpatialFit" type="spatialFitDataType" minOccurs="0"
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maxOccurs="1"/>
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</xs:sequence>
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</xs:extension>
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</xs:complexContent>
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</xs:complexType>
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<xs:complexType name="footprintType">
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<!-- The footprint feature type allows the location to be represented by points, lines,
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polygons, curves, or a collection of any of these geometry types. -->
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<xs:complexContent>
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<xs:extension base="gml:AbstractFeatureType">
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<xs:sequence>
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<xs:element name="FootprintGeometry" type="gml:MultiGeometryPropertyType"
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minOccurs="0" maxOccurs="1"/>
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<!-- The footprint geometry holds the collection of encoded geometry objects used
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to describe the location. This footprint may be different from the original
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spatial representation of the location. For example, the data provider may
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represent point locations as the one-degree grid cell in which the point lies. -->
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<xs:element name="FootprintSpatialFit" type="spatialFitDataType" minOccurs="0"
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maxOccurs="1"/>
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</xs:sequence>
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</xs:extension>
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</xs:complexContent>
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</xs:complexType>
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<!-- OccurrenceLocationType -->
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<xs:complexType name="OccurrenceFeatureType">
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<xs:complexContent>
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<xs:extension base="gml:AbstractFeatureType">
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<xs:sequence>
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<xs:element ref="LocationPointRadius" minOccurs="0"/>
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<xs:element ref="LocationFootprint" minOccurs="0"/>
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<!-- NB: any GML element substitutable for gml:_Geometry can be added to this list or in an extension. -->
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</xs:sequence>
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</xs:extension>
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</xs:complexContent>
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</xs:complexType>
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</xs:schema>
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