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<?xml version="1.0" encoding="UTF-8"?>
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<schema targetNamespace="http://www.opengis.net/gml" xmlns:gml="http://www.opengis.net/gml" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xlink="http://www.w3.org/1999/xlink" elementFormDefault="qualified" version="3.1.1.2">
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<annotation>
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<appinfo source="urn:opengis:specification:gml:schema-xsd:grids:3.1.1">grids.xsd</appinfo>
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<documentation xml:lang="en">Grid geometries
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A subset of implicit geometries
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Designed for use with GML Coverage schema, but maybe useful elsewhere as well.
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GML is an OGC Standard.
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Copyright (c) 2001,2005,2010 Open Geospatial Consortium.
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To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
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</documentation>
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</annotation>
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<!-- ==============================================================
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includes and imports
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============================================================== -->
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<include schemaLocation="gml.xsd"/>
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<include schemaLocation="geometryBasic0d1d.xsd"/>
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<!-- ==============================================================
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global elements
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============================================================== -->
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<element name="_ImplicitGeometry" type="gml:AbstractGeometryType" abstract="true" substitutionGroup="gml:_Geometry"/>
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<!-- =========================================================== -->
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<element name="Grid" type="gml:GridType" substitutionGroup="gml:_ImplicitGeometry"/>
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<!-- =========================================================== -->
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<complexType name="GridType">
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<annotation>
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<documentation>An unrectified grid, which is a network composed of two or more sets of equally spaced parallel lines in which the members of each set intersect the members of the other sets at right angles.</documentation>
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</annotation>
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<complexContent>
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<extension base="gml:AbstractGeometryType">
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<sequence>
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<element name="limits" type="gml:GridLimitsType"/>
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<element name="axisName" type="string" maxOccurs="unbounded"/>
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</sequence>
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<attribute name="dimension" type="positiveInteger" use="required"/>
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</extension>
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</complexContent>
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</complexType>
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<!-- =========================================================== -->
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<complexType name="GridLimitsType">
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<sequence>
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<element name="GridEnvelope" type="gml:GridEnvelopeType"/>
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</sequence>
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</complexType>
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<!-- =========================================================== -->
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<complexType name="GridEnvelopeType">
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<annotation>
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<documentation>Provides grid coordinate values for the diametrically opposed corners of an envelope that bounds a section of grid. The value of a single coordinate is the number of offsets from the origin of the grid in the direction of a specific axis.</documentation>
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</annotation>
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<sequence>
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<element name="low" type="gml:integerList"/>
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<element name="high" type="gml:integerList"/>
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</sequence>
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</complexType>
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<!-- =========================================================== -->
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<element name="RectifiedGrid" type="gml:RectifiedGridType" substitutionGroup="gml:_ImplicitGeometry">
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<annotation>
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<documentation>Should be substitutionGroup="gml:Grid" but changed in order to accomplish Xerces-J schema validation</documentation>
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</annotation>
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</element>
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<!-- =========================================================== -->
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<complexType name="RectifiedGridType">
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<annotation>
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<documentation>A rectified grid has an origin and vectors that define its post locations.</documentation>
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</annotation>
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<complexContent>
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<extension base="gml:GridType">
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<sequence>
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<element name="origin" type="gml:PointPropertyType"/>
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<element name="offsetVector" type="gml:VectorType" maxOccurs="unbounded"/>
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</sequence>
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</extension>
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</complexContent>
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</complexType>
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<!-- =========================================================== -->
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</schema>
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