Java Doc for GMLSchema.java in  » GIS » GeoTools-2.4.1 » org » geotools » gml3 » Java Source Code / Java DocumentationJava Source Code and Java Documentation

 
 <complexType name="AbsoluteExternalPositionalAccuracyType">
 <annotation>
 <documentation>Closeness of reported coordinate values to values accepted as or being true.

 
 <complexType abstract="true" name="AbstractCoordinateOperationBaseType">
 <annotation>
 <documentation>Basic encoding for coordinate operation objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType abstract="true" name="AbstractCoordinateOperationType">
 <annotation>
 <documentation>A mathematical operation on coordinates that transforms or converts coordinates to another coordinate reference system.

 
 <complexType abstract="true" name="AbstractCoordinateSystemBaseType">
 <annotation>
 <documentation>Basic encoding for coordinate system objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType abstract="true" name="AbstractCoordinateSystemType">
 <annotation>
 <documentation>A coordinate system (CS) is the set of coordinate system axes that spans a given coordinate space.

 
 <complexType abstract="true" name="AbstractCoverageType">
 <annotation>
 <documentation>Abstract element which acts as the head of a substitution group for coverages.

 
 <complexType abstract="true" name="AbstractCurveSegmentType">
 <annotation>
 <documentation>Curve segment defines a homogeneous segment of a curve.</documentation>
 </annotation>
 <sequence/>
 <attribute default="0" name="numDerivativesAtStart" type="integer" use="optional">
 <annotation>
 <documentation>The attribute "numDerivativesAtStart" specifies the type of continuity between this curve segment and its predecessor.

 
 <complexType abstract="true" name="AbstractCurveType">
 <annotation>
 <documentation>An abstraction of a curve to support the different levels of complexity.

 
 <complexType abstract="true" name="AbstractDatumBaseType">
 <annotation>
 <documentation>Basic encoding for datum objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType abstract="true" name="AbstractDatumType">
 <annotation>
 <documentation>A datum specifies the relationship of a coordinate system to the earth, thus creating a coordinate reference system.

 
 <complexType abstract="true" name="AbstractDiscreteCoverageType">
 <annotation>
 <documentation>A discrete coverage consists of a domain set, range set and optionally a coverage function.

 
 <complexType abstract="true" name="AbstractFeatureType">
 <annotation>
 <documentation>An abstract feature provides a set of common properties, including id, metaDataProperty, name and description inherited from AbstractGMLType, plus boundedBy.

 
 <complexType abstract="true" name="AbstractGeneralConversionType">
 <annotation>
 <documentation>An abstract operation on coordinates that does not include any change of datum.

 
 <complexType abstract="true" name="AbstractGeneralDerivedCRSType">
 <annotation>
 <documentation>A coordinate reference system that is defined by its coordinate conversion from another coordinate reference system (not by a datum).

 
 <complexType name="AbstractGeneralOperationParameterRefType">
 <annotation>
 <documentation>Association to an operation parameter or group, either referencing or containing the definition of that parameter or group.

 
 <complexType abstract="true" name="AbstractGeneralOperationParameterType">
 <annotation>
 <documentation>Abstract definition of a parameter or group of parameters used by an operation method.

 
 <complexType abstract="true" name="AbstractGeneralParameterValueType">
 <annotation>
 <documentation>Abstract parameter value or group of parameter values.
 This abstract complexType is expected to be extended and restricted for well-known operation methods with many instances, in Application Schemas that define operation-method-specialized element names and contents.

 
 <complexType abstract="true" name="AbstractGeneralTransformationType">
 <annotation>
 <documentation>An abstract operation on coordinates that usually includes a change of Datum.

 
 <complexType abstract="true" name="AbstractGeometricPrimitiveType">
 <annotation>
 <documentation>This is the abstract root type of the geometric primitives.

 
 <complexType abstract="true" name="AbstractGeometryType">
 <annotation>
 <documentation>All geometry elements are derived directly or indirectly from this abstract supertype.

 
 <complexType abstract="true" name="AbstractGMLType">
 <annotation>
 <documentation>All complexContent GML elements are directly or indirectly derived from this abstract supertype
 to establish a hierarchy of GML types that may be distinguished from other XML types by their ancestry.

 
 <complexType name="AbstractGriddedSurfaceType">
 <annotation>
 <documentation>A gridded surface is a parametric curve
 surface derived from a rectangular grid in the parameter
 space.

 
 <complexType abstract="true" name="AbstractPositionalAccuracyType">
 <annotation>
 <documentation>Position error estimate (or accuracy) data.

 
 <complexType abstract="true" name="AbstractReferenceSystemType">
 <annotation>
 <documentation>Description of a spatial and/or temporal reference system used by a dataset.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractReferenceSystemBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:srsID">
 <annotation>
 <documentation>Set of alterative identifications of this reference system.

 
 <complexType name="AbstractSolidType">
 <annotation>
 <documentation>An abstraction of a solid to support the different levels of complexity.

 
 <complexType abstract="true" name="AbstractStyleType">
 <annotation>
 <documentation>[complexType of] The value of the top-level property.

 
 <complexType name="AbstractSurfaceType">
 <annotation>
 <documentation>An abstraction of a surface to support the different levels of complexity.

 
 <complexType abstract="true" name="AbstractTimeGeometricPrimitiveType">
 <annotation>
 <documentation xml:lang="en">The abstract supertype for temporal geometric primitives.
 A temporal geometry must be associated with a temporal reference system via URI.
 The Gregorian calendar with UTC is the default reference system, following ISO
 8601.

 
 <complexType abstract="true" name="AbstractTimeReferenceSystemType">
 <annotation>
 <documentation xml:lang="en">A value in the time domain is measured relative to a temporal reference system.

 
 <complexType abstract="true" name="AbstractTimeSliceType">
 <annotation>
 <documentation xml:lang="en">A timeslice encapsulates the time-varying properties of a dynamic feature--it
 must be extended to represent a timestamped projection of a feature.

 
 <complexType name="AffinePlacementType">
 <annotation>
 <documentation>A placement takes a standard geometric
 construction and places it in geographic space.

 
 <complexType name="AngleType">
 <annotation>
 <documentation>Value of an angle quantity recorded as a single number, with its units.

 
 <complexType name="ArcByBulgeType">
 <annotation>
 <documentation>An ArcByBulge is an arc string with only one arc unit, i.e.

 
 <complexType name="ArcByCenterPointType">
 <annotation>
 <documentation>This variant of the arc requires that the points on the arc have to be computed instead of storing the coordinates directly.

 
 <complexType name="ArcStringByBulgeType">
 <annotation>
 <documentation>This variant of the arc computes the mid points of the arcs instead of storing the coordinates directly.

 
 <complexType name="ArcStringType">
 <annotation>
 <documentation>An ArcString is a curve segment that uses three-point circular arc interpolation.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1.

 
 <complexType name="ArcType">
 <annotation>
 <documentation>An Arc is an arc string with only one arc unit, i.e.

 
 <complexType name="AreaType">
 <annotation>
 <documentation>Value of a spatial area quantity, with its units.

 
 <complexType name="ArrayAssociationType">
 <annotation>
 <documentation>A base for derived types used to specify complex types containing an array of objects, by unspecified UML association - either composition or aggregation.

 
 <complexType name="AssociationType">
 <annotation>
 <documentation>A pattern or base for derived types used to specify complex types corresponding to an  unspecified UML association - either composition or aggregation.

 
 <complexType name="BagType">
 <annotation>
 <documentation>A non-abstract generic collection type that can be used as a document element for a collection of any GML types - Geometries, Topologies, Features ...
 FeatureCollections may only contain Features.

 
 <complexType name="BaseUnitType">
 <annotation>
 <documentation>Definition of a unit of measure which is a base unit from the system of units.

 
 <complexType name="BezierType">
 <annotation>
 <documentation>Bezier curves are polynomial splines that use Bezier or Bernstein polynomials for interpolation purposes.

 
 <simpleType name="booleanList">
 <annotation>
 <documentation>XML List based on XML Schema boolean type.

 
 <simpleType name="booleanOrNullList">
 <annotation>
 <documentation>XML List based on the union type defined above.

 
 <simpleType name="booleanOrNull">
 <annotation>
 <documentation>Union of the XML Schema boolean type and the GML Nulltype.

 
 <complexType name="BSplineType">
 <annotation>
 <documentation>A B-Spline is a piecewise parametric polynomial or rational curve described in terms of control points and basis functions.

 
 <simpleType name="CalDate">
 <annotation>
 <documentation xml:lang="en">Calendar dates may be indicated with varying degrees of precision,
 using year, year-month, date.

 
 <complexType name="CartesianCSRefType">
 <annotation>
 <documentation>Association to a Cartesian coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="CartesianCSType">
 <annotation>
 <documentation>A 1-, 2-, or 3-dimensional coordinate system.

 
 <complexType name="CategoryExtentType">
 <annotation>
 <documentation>Restriction of list type to store a 2-point range of ordinal values.

 
 <complexType name="CircleByCenterPointType">
 <annotation>
 <documentation>A CircleByCenterPoint is an ArcByCenterPoint with identical start and end angle to form a full circle.

 
 <complexType name="CircleType">
 <annotation>
 <documentation>A Circle is an arc whose ends coincide to form a simple closed loop.

 
 <complexType name="ClothoidType">
 <annotation>
 <documentation>A clothoid, or Cornu's spiral, is plane
 curve whose curvature is a fixed function of its length.
 In suitably chosen co-ordinates it is given by Fresnel's
 integrals.
 x(t) = 0-integral-t cos(AT*T/2)dT
 y(t) = 0-integral-t sin(AT*T/2)dT
 This geometry is mainly used as a transition curve between
 curves of type straight line to circular arc or circular arc
 to circular arc.

 
 <complexType name="CodeListType">
 <annotation>
 <documentation>List of values on a uniform nominal scale.

 
 <complexType name="CodeOrNullListType">
 <annotation>
 <documentation>List of values on a uniform nominal scale.

 
 <complexType name="CodeType">
 <annotation>
 <documentation>Name or code with an (optional) authority.

 
 <complexType name="CompositeCurveType">
 <annotation>
 <documentation>A CompositeCurve is defined by a sequence of (orientable) curves such that the each curve in the sequence terminates at the start point of the subsequent curve in the list.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveType">
 <sequence>
 <element maxOccurs="unbounded" ref="gml:curveMember">
 <annotation>
 <documentation>This element references or contains one curve in the composite curve.

 
 <complexType name="CompositeSolidType">
 <annotation>
 <documentation>A composite solid is a geometry type with all the geometric properties of a (primitive) solid.
 Essentially, a composite solid is a collection of solids that join in pairs on common boundary surfaces and which, when considered as a whole, form a single solid.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractSolidType">
 <sequence>
 <element maxOccurs="unbounded" ref="gml:solidMember">
 <annotation>
 <appinfo>
 <sch:pattern name="Check either href or content not both">
 <sch:rule context="gml:solidMember">
 <sch:extends rule="hrefOrContent"/>
 </sch:rule>
 </sch:pattern>
 </appinfo>
 <documentation>This element references or contains one solid in the composite solid.

 
 <complexType name="CompositeSurfaceType">
 <annotation>
 <documentation>A CompositeSurface is defined by a set of orientable surfaces.

 
 <complexType name="CompositeValueType">
 <annotation>
 <documentation>Aggregate value built from other Values using the Composite pattern.

 
 <complexType name="CompoundCRSRefType">
 <annotation>
 <documentation>Association to a compound coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="CompoundCRSType">
 <annotation>
 <documentation>A coordinate reference system describing the position of points through two or more independent coordinate reference systems.

 
 <complexType name="ConcatenatedOperationRefType">
 <annotation>
 <documentation>Association to a concatenated operation, either referencing or containing the definition of that concatenated operation.

 
 <complexType name="ConcatenatedOperationType">
 <annotation>
 <documentation>An ordered sequence of two or more single coordinate operations.

 
 <complexType name="ConeType">
 <annotation>
 <documentation>A cone is a gridded surface given as a
 family of conic sections whose control points vary linearly.
 NOTE! A 5-point ellipse with all defining positions identical
 is a point.

 
 <complexType name="ConventionalUnitType">
 <annotation>
 <documentation>Definition of a unit of measure which is related to a preferred unit for this quantity type through a conversion formula.

 
 <complexType name="ConversionRefType">
 <annotation>
 <documentation>Association to a concrete general-purpose conversion, either referencing or containing the definition of that conversion.

 
 <complexType name="ConversionToPreferredUnitType">
 <annotation>
 <documentation>Relation of a unit to the preferred unit for this quantity type, specified by an arithmetic conversion (scaling and/or offset).

 
 <complexType name="ConversionType">
 <annotation>
 <documentation>A concrete operation on coordinates that does not include any change of Datum.

 
 <complexType name="CoordinateOperationRefType">
 <annotation>
 <documentation>Association to a coordinate operation, either referencing or containing the definition of that coordinate operation.

 
 <complexType name="CoordinateReferenceSystemRefType">
 <annotation>
 <documentation>Association to a coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="CoordinatesType">
 <annotation>
 <documentation>Tables or arrays of tuples.
 May be used for text-encoding of values from a table.
 Actually just a string, but allows the user to indicate which characters are used as separators.
 The value of the 'cs' attribute is the separator for coordinate values,
 and the value of the 'ts' attribute gives the tuple separator (a single space by default);
 the default values may be changed to reflect local usage.
 Defaults to CSV within a tuple, space between tuples.
 However, any string content will be schema-valid.

 
 <complexType abstract="true" name="CoordinateSystemAxisBaseType">
 <annotation>
 <documentation>Basic encoding for coordinate system axis objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType name="CoordinateSystemAxisRefType">
 <annotation>
 <documentation>Association to a coordinate system axis, either referencing or containing the definition of that axis.

 
 <complexType name="CoordinateSystemAxisType">
 <annotation>
 <documentation>Definition of a coordinate system axis.

 
 <complexType name="CoordinateSystemRefType">
 <annotation>
 <documentation>Association to a coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="CoordType">
 <annotation>
 <documentation>Represents a coordinate tuple in one, two, or three dimensions.

 
 <simpleType name="CountExtentType">
 <annotation>
 <documentation>Restriction of list type to store a 2-point range of frequency values.

 
 <complexType name="CovarianceMatrixType">
 <annotation>
 <documentation>Error estimate covariance matrix.

 
 <complexType name="CoverageFunctionType">
 <annotation>
 <documentation>The function or rule which defines the map from members of the domainSet to the range.

 
 <complexType name="CubicSplineType">
 <annotation>
 <documentation>Cubic splines are similar to line strings in that they are a sequence of segments each with its own defining function.

 
 <complexType name="CurveArrayPropertyType">
 <annotation>
 <documentation>A container for an array of curves.

 
 <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).

 
 <complexType name="CurveType">
 <annotation>
 <documentation>Curve is a 1-dimensional primitive.

 
 <complexType name="CylinderType">
 <annotation>
 <documentation>A cylinder is a gridded surface given as a
 family of circles whose positions vary along a set of parallel
 lines, keeping the cross sectional horizontal curves of a
 constant shape.

 
 <complexType name="CylindricalCSRefType">
 <annotation>
 <documentation>Association to a cylindrical coordinate system, either referencing or containing the definition of that coordinate system.

 
 <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.

 
 <complexType name="DatumRefType">
 <annotation>
 <documentation>Association to a datum, either referencing or containing the definition of that datum.

 
 <complexType name="DefaultStylePropertyType">
 <annotation>
 <documentation>[complexType of] Top-level property.

 
 <complexType name="DefinitionProxyType">
 <annotation>
 <documentation>A proxy entry in a dictionary of definitions.

 
 <complexType name="DefinitionType">
 <annotation>
 <documentation>A definition, which can be included in or referenced by a dictionary.

 
 <complexType name="DegreesType">
 <annotation>
 <documentation>Integer number of degrees, plus the angle direction.

 
 <complexType name="DerivationUnitTermType">
 <annotation>
 <documentation>Definition of one unit term for a derived unit of measure.

 
 <complexType name="DerivedCRSRefType">
 <annotation>
 <documentation>Association to a non-projected derived coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="DerivedCRSTypeType">
 <annotation>
 <documentation>Type of a derived coordinate reference system.

 
 <complexType name="DerivedCRSType">
 <annotation>
 <documentation>A coordinate reference system that is defined by its coordinate conversion from another coordinate reference system but is not a projected coordinate reference system.

 
 <complexType name="DerivedUnitType">
 <annotation>
 <documentation>Definition of a unit of measure which is defined through algebraic combination of more primitive units, which are usually base units from a particular system of units.

 
 <complexType name="DictionaryEntryType">
 <annotation>
 <documentation>An entry in a dictionary of definitions.

 
 <complexType name="DictionaryType">
 <annotation>
 <documentation>A non-abstract bag that is specialized for use as a dictionary which contains a set of definitions.

 
 <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.

 
 <complexType name="DirectPositionType">
 <annotation>
 <documentation>DirectPosition instances hold the coordinates for a position within some coordinate reference system (CRS).

 
 <complexType name="DomainSetType">
 <annotation>
 <documentation>The spatiotemporal domain of a coverage.
 Typically
 a geometry collection,
 an implicit geometry (e.g.

 
 <simpleType name="doubleList">
 <annotation>
 <documentation>XML List based on XML Schema double type.

 
 <simpleType name="doubleOrNullList">
 <annotation>
 <documentation>XML List based on the union type defined above.

 
 <simpleType name="doubleOrNull">
 <annotation>
 <documentation>Union of the XML Schema double type and the GML Nulltype.

 
 <complexType name="EdgeType">
 <annotation>
 <documentation>There is precisely one positively directed and one negatively directed node in the boundary of every edge.

 
 <complexType name="EllipsoidalCSRefType">
 <annotation>
 <documentation>Association to an ellipsoidal coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="EllipsoidalCSType">
 <annotation>
 <documentation>A two- or three-dimensional coordinate system in which position is specified by geodetic latitude, geodetic longitude, and (in the three-dimensional case) ellipsoidal height.

 
 <complexType abstract="true" name="EllipsoidBaseType">
 <annotation>
 <documentation>Basic encoding for ellipsoid objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType name="EllipsoidRefType">
 <annotation>
 <documentation>Association to an ellipsoid, either referencing or containing the definition of that ellipsoid.

 
 <complexType name="EllipsoidType">
 <annotation>
 <documentation>An ellipsoid is a geometric figure that can be used to describe the approximate shape of the earth.

 
 <complexType name="EngineeringCRSRefType">
 <annotation>
 <documentation>Association to an engineering coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="EngineeringCRSType">
 <annotation>
 <documentation>A contextually local coordinate reference system; which can be divided into two broad categories:
 - earth-fixed systems applied to engineering activities on or near the surface of the earth;
 - CRSs on moving platforms such as road vehicles, vessels, aircraft, or spacecraft.
 For further information, see OGC Abstract Specification Topic 2.

 
 <complexType name="EngineeringDatumRefType">
 <annotation>
 <documentation>Association to an engineering datum, either referencing or containing the definition of that datum.

 
 <complexType name="EngineeringDatumType">
 <annotation>
 <documentation>An engineering datum defines the origin of an engineering coordinate reference system, and is used in a region around that origin.

 
 <complexType name="EnvelopeType">
 <annotation>
 <documentation>Envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions.

 
 <complexType name="ExtentType">
 <annotation>
 <documentation>Information about the spatial, vertical, and/or temporal extent of a reference system object.

 
 <complexType name="FaceType">
 <annotation>
 <documentation>.

 
 <complexType name="FormulaType">
 <annotation>
 <documentation>Paremeters of a simple formula by which a value using this unit of measure can be converted to the corresponding value using the preferred unit of measure.

 
 <complexType name="GeneralConversionRefType">
 <annotation>
 <documentation>Association to a general conversion, either referencing or containing the definition of that conversion.

 
 <complexType name="GeneralTransformationRefType">
 <annotation>
 <documentation>Association to a general transformation, either referencing or containing the definition of that transformation.

 
 <complexType name="GeocentricCRSRefType">
 <annotation>
 <documentation>Association to a geocentric coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="GeocentricCRSType">
 <annotation>
 <documentation>A 3D coordinate reference system with the origin at the approximate centre of mass of the earth.

 
 <complexType name="GeodesicStringType">
 <annotation>
 <documentation>A GeodesicString consists of sequence of
 geodesic segments.

 
 <complexType name="GeodesicType">
 <annotation>
 <documentation>A Geodesic consists of two distinct
 positions joined by a geodesic curve.

 
 <complexType name="GeodeticDatumRefType">
 <annotation>
 <documentation>Association to a geodetic datum, either referencing or containing the definition of that datum.

 
 <complexType name="GeodeticDatumType">
 <annotation>
 <documentation>A geodetic datum defines the precise location and orientation in 3-dimensional space of a defined ellipsoid (or sphere) that approximates the shape of the earth, or of a Cartesian coordinate system centered in this ellipsoid (or sphere).

 
 <complexType name="GeographicCRSRefType">
 <annotation>
 <documentation>Association to a geographic coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="GeometricComplexPropertyType">
 <annotation>
 <documentation>A property that has a geometric complex 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).

 
 <complexType name="GeometricPrimitivePropertyType">
 <annotation>
 <documentation>A property that has a geometric primitive 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).

 
 <complexType name="GeometryArrayPropertyType">
 <annotation>
 <documentation>A container for an array of geometry elements.

 
 <complexType name="GeometryPropertyType">
 <annotation>
 <documentation>A geometric property can either be any 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).

 
 <complexType name="GeometryStyleType">
 <annotation>
 <documentation>[complexType of] The style descriptor for geometries of a feature.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:BaseStyleDescriptorType">
 <sequence>
 <choice>
 <element ref="gml:symbol"/>
 <element name="style" type="string">
 <annotation>
 <appinfo>deprecated</appinfo>
 <documentation>Deprecated in GML version 3.1.0.

 
 <complexType name="GraphStyleType">
 <annotation>
 <documentation>[complexType of] The style descriptor for a graph consisting of a number of features.

 
 <complexType name="GridEnvelopeType">
 <annotation>
 <documentation>Provides grid coordinate values for the diametrically opposed corners of an envelope that bounds a section of grid.

 
 <complexType name="GridFunctionType">
 <annotation>
 <documentation>Defines how values in the domain are mapped to the range set.

 
 <complexType name="GridLengthType">
 <annotation>
 <documentation>Value of a length (or distance) quantity in a grid, where the grid spacing does not have any associated physical units, or does not have a constant physical spacing.

 
 <complexType name="IdentifierType">
 <annotation>
 <documentation>An identification of a CRS object.

 
 <complexType name="ImageCRSRefType">
 <annotation>
 <documentation>Association to an image coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="ImageCRSType">
 <annotation>
 <documentation>An engineering coordinate reference system applied to locations in images.

 
 <complexType name="ImageDatumRefType">
 <annotation>
 <documentation>Association to an image datum, either referencing or containing the definition of that datum.

 
 <complexType name="ImageDatumType">
 <annotation>
 <documentation>An image datum defines the origin of an image coordinate reference system, and is used in a local context only.

 
 <simpleType name="IncrementOrder">
 <annotation>
 <documentation>The enumeration value here indicates the incrementation order  to be used on the first 2 axes, i.e.

 
 <complexType name="IndexMapType">
 <annotation>
 <documentation>Exends GridFunctionType with a lookUpTable.

 
 <complexType name="IndirectEntryType">
 <annotation>
 <documentation>An entry in a dictionary of definitions that contains a GML object which references a remote definition object.

 
 <simpleType name="integerList">
 <annotation>
 <documentation>XML List based on XML Schema integer type.

 
 <simpleType name="integerOrNullList">
 <annotation>
 <documentation>XML List based on the union type defined above.

 
 <simpleType name="integerOrNull">
 <annotation>
 <documentation>Union of the XML Schema integer type and the GML Nulltype.

 
 <simpleType name="KnotTypesType">
 <annotation>
 <documentation>Defines allowed values for the knots` type.

 
 <complexType name="KnotType">
 <annotation>
 <documentation>A knot is a breakpoint on a piecewise spline curve.</documentation>
 </annotation>
 <sequence>
 <element name="value" type="double">
 <annotation>
 <documentation>The property "value" is the value of the parameter at the knot of the spline.

 
 <complexType name="LengthType">
 <annotation>
 <documentation>Value of a length (or distance) quantity, with its units.

 
 <complexType name="LinearCSRefType">
 <annotation>
 <documentation>Association to a linear coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="LinearCSType">
 <annotation>
 <documentation>A one-dimensional coordinate system that consists of the points that lie on the single axis described.

 
 <complexType name="LinearRingType">
 <annotation>
 <documentation>A LinearRing is defined by four or more coordinate tuples, with linear interpolation between them; the first and last coordinates must be coincident.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractRingType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a linear ring.
 1.

 
 <complexType name="LineStringPropertyType">
 <annotation>
 <documentation>This type is deprecated with GML 3 and shall not be used.

 
 <complexType name="LineStringSegmentType">
 <annotation>
 <documentation>A LineStringSegment is a curve segment that is defined by two or more coordinate tuples, with linear interpolation between them.
 Note: LineStringSegment implements GM_LineString of ISO 19107.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1.

 
 <complexType name="LineStringType">
 <annotation>
 <documentation>A LineString is a special curve that consists of a single segment with linear interpolation.

 
 <complexType name="LocationPropertyType">
 <annotation>
 <documentation>Convenience property for generalised location.

 
 <complexType name="MeasureListType">
 <annotation>
 <documentation>List of numbers with a uniform scale.
 The value of uom (Units Of Measure) attribute is a reference to
 a Reference System for the amount, either a ratio or position scale.

 
 <complexType name="MeasureOrNullListType">
 <annotation>
 <documentation>List of numbers with a uniform scale.
 A member of the list may be a typed null.
 The value of uom (Units Of Measure) attribute is a reference to
 a Reference System for the amount, either a ratio or position scale.

 
 <complexType name="MeasureType">
 <annotation>
 <documentation>Number with a scale.
 The value of uom (Units Of Measure) attribute is a reference to a Reference System for the amount, either a ratio or position scale.

 
 <complexType name="MovingObjectStatusType">
 <annotation>
 <documentation xml:lang="en">This type encapsulates various dynamic properties of moving objects
 (points, lines, regions).

 
 <complexType name="MultiCurvePropertyType">
 <annotation>
 <documentation>A property that has a collection of curves 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).

 
 <complexType name="MultiCurveType">
 <annotation>
 <documentation>A MultiCurve is defined by one or more Curves, referenced through curveMember elements.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricAggregateType">
 <sequence>
 <annotation>
 <documentation>The members of the geometric aggregate can be specified either using the "standard" property or the array property style.

 
 <complexType name="MultiGeometryPropertyType">
 <annotation>
 <documentation>A property that has a geometric aggregate 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).

 
 <complexType name="MultiGeometryType">
 <annotation>
 <documentation>A geometry collection must include one or more geometries, referenced through geometryMember elements.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricAggregateType">
 <sequence>
 <annotation>
 <documentation>The members of the geometric aggregate can be specified either using the "standard" property or the array property style.

 
 <complexType name="MultiLineStringPropertyType">
 <annotation>
 <documentation>This type is deprecated with GML 3 and shall not be used.

 
 <complexType name="MultiLineStringType">
 <annotation>
 <documentation>A MultiLineString is defined by one or more LineStrings, referenced through lineStringMember elements.

 
 <complexType name="MultiPointPropertyType">
 <annotation>
 <documentation>A property that has a collection of points 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).

 
 <complexType name="MultiPointType">
 <annotation>
 <documentation>A MultiPoint is defined by one or more Points, referenced through pointMember elements.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricAggregateType">
 <sequence>
 <annotation>
 <documentation>The members of the geometric aggregate can be specified either using the "standard" property or the array property style.

 
 <complexType name="MultiPolygonPropertyType">
 <annotation>
 <documentation>This type is deprecated with GML 3 and shall not be used.

 
 <complexType name="MultiPolygonType">
 <annotation>
 <documentation>A MultiPolygon is defined by one or more Polygons, referenced through polygonMember elements.

 
 <complexType name="MultiSolidPropertyType">
 <annotation>
 <documentation>A property that has a collection of solids 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).

 
 <complexType name="MultiSolidType">
 <annotation>
 <documentation>A MultiSolid is defined by one or more Solids, referenced through solidMember elements.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricAggregateType">
 <sequence>
 <annotation>
 <documentation>The members of the geometric aggregate can be specified either using the "standard" property or the array property style.

 
 <complexType name="MultiSurfacePropertyType">
 <annotation>
 <documentation>A property that has a collection of surfaces 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).

 
 <complexType name="MultiSurfaceType">
 <annotation>
 <documentation>A MultiSurface is defined by one or more Surfaces, referenced through surfaceMember elements.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricAggregateType">
 <sequence>
 <annotation>
 <documentation>The members of the geometric aggregate can be specified either using the "standard" property or the array property style.

 
 <simpleType name="NameList">
 <annotation>
 <documentation>XML List based on XML Schema Name type.

 
 <simpleType name="NameOrNullList">
 <annotation>
 <documentation>XML List based on the union type defined above.

 
 <simpleType name="NameOrNull">
 <annotation>
 <documentation>Union of the XML Schema Name type and the GML Nulltype.

 
 <simpleType name="NCNameList">
 <annotation>
 <documentation>A set of values, representing a list of token with the lexical value space of NCName.

 
 <complexType name="NodeType">
 <annotation>
 <documentation>Its optional co-boundary is a set of connected directedEdges.

 
 <simpleType name="NullEnumeration">
 <annotation>
 <documentation> Some common reasons for a null value:
 innapplicable - the object does not have a value
 missing - The correct value is not readily available to the sender of this data.

 
 <simpleType name="NullType">
 <annotation>
 <documentation>Utility type for null elements.

 
 <complexType name="ObliqueCartesianCSRefType">
 <annotation>
 <documentation>Association to an oblique-Cartesian coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="ObliqueCartesianCSType">
 <annotation>
 <documentation>A two- or three-dimensional coordinate system with straight axes that are not necessarily orthogonal.

 
 <complexType name="OffsetCurveType">
 <annotation>
 <documentation>An offset curve is a curve at a constant
 distance from the basis curve.

 
 <complexType abstract="true" name="OperationMethodBaseType">
 <annotation>
 <documentation>Basic encoding for operation method objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType name="OperationMethodRefType">
 <annotation>
 <documentation>Association to a concrete general-purpose operation method, either referencing or containing the definition of that method.

 
 <complexType name="OperationMethodType">
 <annotation>
 <documentation>Definition of an algorithm used to perform a coordinate operation.

 
 <complexType abstract="true" name="OperationParameterBaseType">
 <annotation>
 <documentation>Basic encoding for operation parameter objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType abstract="true" name="OperationParameterGroupBaseType">
 <annotation>
 <documentation>Basic encoding for operation parameter group objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType name="OperationParameterGroupRefType">
 <annotation>
 <documentation>Association to an operation parameter, either referencing or containing the definition of that parameter.

 
 <complexType name="OperationParameterGroupType">
 <annotation>
 <documentation>The definition of a group of parameters used by an operation method.

 
 <complexType name="OperationParameterRefType">
 <annotation>
 <documentation>Association to an operation parameter, either referencing or containing the definition of that parameter.

 
 <complexType name="OperationParameterType">
 <annotation>
 <documentation>The definition of a parameter used by an operation method.

 
 <complexType name="OperationRefType">
 <annotation>
 <documentation>Association to an abstract operation, either referencing or containing the definition of that operation.

 
 <complexType name="OrientableCurveType">
 <annotation>
 <documentation>OrientableCurve consists of a curve and an orientation.

 
 <complexType name="OrientableSurfaceType">
 <annotation>
 <documentation>OrientableSurface consists of a surface and an orientation.

 
 <complexType name="ParameterValueGroupType">
 <annotation>
 <documentation>A group of related parameter values.

 
 <complexType name="ParameterValueType">
 <annotation>
 <documentation>A parameter value, ordered sequence of values, or reference to a file of parameter values.

 
 <complexType name="PassThroughOperationRefType">
 <annotation>
 <documentation>Association to a pass through operation, either referencing or containing the definition of that pass through operation.

 
 <complexType name="PassThroughOperationType">
 <annotation>
 <documentation>A pass-through operation specifies that a subset of a coordinate tuple is subject to a specific coordinate operation.

 
 <complexType name="PixelInCellType">
 <annotation>
 <documentation>Specification of the way an image grid is associated with the image data attributes.

 
 <complexType name="PointArrayPropertyType">
 <annotation>
 <documentation>A container for an array of points.

 
 <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).

 
 <complexType name="PointType">
 <annotation>
 <documentation>A Point is defined by a single coordinate tuple.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricPrimitiveType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the direct poisiton of a point.

 
 <complexType name="PolarCSRefType">
 <annotation>
 <documentation>Association to a polar coordinate system, either referencing or containing the definition of that coordinate system.

 
 <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.

 
 <complexType name="PolygonPatchType">
 <annotation>
 <documentation>A PolygonPatch is a surface patch that is defined by a set of boundary curves and an underlying surface to which these curves adhere.

 
 <complexType name="PolygonPropertyType">
 <annotation>
 <documentation>This type is deprecated with GML 3 and shall not be used.

 
 <complexType name="PolygonType">
 <annotation>
 <documentation>A Polygon is a special surface that is defined by a single surface patch.

 
 <complexType name="PolyhedralSurfaceType">
 <annotation>
 <documentation>A polyhedral surface is a surface composed
 of polygon surfaces connected along their common boundary
 curves.

 
 <complexType abstract="true" name="PrimeMeridianBaseType">
 <annotation>
 <documentation>Basic encoding for prime meridian objects, simplifying and restricting the DefinitionType as needed.

 
 <complexType name="PrimeMeridianRefType">
 <annotation>
 <documentation>Association to a prime meridian, either referencing or containing the definition of that meridian.

 
 <complexType name="PrimeMeridianType">
 <annotation>
 <documentation>A prime meridian defines the origin from which longitude values are determined.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:PrimeMeridianBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:meridianID">
 <annotation>
 <documentation>Set of alternative identifications of this prime meridian.

 
 <complexType name="ProjectedCRSRefType">
 <annotation>
 <documentation>Association to a projected coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="ProjectedCRSType">
 <annotation>
 <documentation>A 2D coordinate reference system used to approximate the shape of the earth on a planar surface, but in such a way that the distortion that is inherent to the approximation is carefully controlled and known.

 
 <simpleType name="QNameList">
 <annotation>
 <documentation>A set of values, representing a list of token with the lexical value space of QName.

 
 <complexType name="QuantityExtentType">
 <annotation>
 <documentation>Restriction of list type to store a 2-point range of numeric values.

 
 <complexType name="RangeParametersType">
 <annotation>
 <documentation>Metadata about the rangeSet.

 
 <complexType name="RangeSetType">
 <choice>
 <element maxOccurs="unbounded" ref="gml:ValueArray">
 <annotation>
 <documentation>each member _Value holds a tuple or "row" from the equivalent table</documentation>
 </annotation>
 </element>
 <group maxOccurs="unbounded" ref="gml:ScalarValueList">
 <annotation>
 <documentation>each list holds the complete set of one scalar component from the values - i.e.

 
 <complexType name="RectangleType">
 <annotation>
 <documentation>Represents a rectangle as a surface with an outer boundary consisting of a linear ring.

 
 <complexType name="ReferenceType">
 <annotation>
 <documentation>A pattern or base for derived types used to specify complex types corresponding to a UML aggregation association.

 
 <complexType name="RelativeInternalPositionalAccuracyType">
 <annotation>
 <documentation>Closeness of the relative positions of two or more positions to their respective relative positions accepted as or being true.

 
 <complexType name="RingType">
 <annotation>
 <documentation>A Ring is used to represent a single connected component of a surface boundary.

 
 <complexType name="ScaleType">
 <annotation>
 <documentation>Value of a scale factor (or ratio) that has no physical unit.

 
 <complexType name="SecondDefiningParameterType">
 <annotation>
 <documentation>Definition of the second parameter that defines the shape of an ellipsoid.

 
 <simpleType name="SignType">
 <annotation>
 <documentation>Utility type used in various places
 - e.g.

 
 <complexType name="SingleOperationRefType">
 <annotation>
 <documentation>Association to a single operation, either referencing or containing the definition of that single operation.

 
 <complexType name="SolidArrayPropertyType">
 <annotation>
 <documentation>A container for an array of solids.

 
 <complexType name="SolidPropertyType">
 <annotation>
 <documentation>A property that has a solid 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).

 
 <complexType name="SolidType">
 <annotation>
 <documentation>A solid is the basis for 3-dimensional geometry.

 
 <complexType name="SpeedType">
 <annotation>
 <documentation>Value of a speed, with its units.

 
 <complexType name="SphereType">
 <annotation>
 <documentation>A sphere is a gridded surface given as a
 family of circles whose positions vary linearly along the
 axis of the sphere, and whise radius varies in proportions to
 the cosine function of the central angle.

 
 <complexType name="SphericalCSRefType">
 <annotation>
 <documentation>Association to a spherical coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="SphericalCSType">
 <annotation>
 <documentation>A three-dimensional coordinate system with one distance measured from the origin and two angular coordinates.

 
 <simpleType name="stringOrNull">
 <annotation>
 <documentation>Union of the XML Schema string type and the GML Nulltype.

 
 <complexType name="StringOrRefType">
 <annotation>
 <documentation>This type is available wherever there is a need for a "text" type property.

 
 <complexType name="StyleType">
 <annotation>
 <documentation>[complexType of] Predefined concrete value of the top-level property.

 
 <simpleType name="SuccessionType">
 <annotation>
 <documentation>Feature succession is a semantic relationship derived from evaluation of observer, and
 Feature Substitution, Feature Division and Feature Fusion are defined as associations between
 previous features and next features in the temporal context.

 
 <complexType name="SurfaceArrayPropertyType">
 <annotation>
 <documentation>A container for an array of surfaces.

 
 <complexType name="SurfacePropertyType">
 <annotation>
 <documentation>A property that has a surface 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).

 
 <complexType name="SurfaceType">
 <annotation>
 <documentation>A Surface is a 2-dimensional primitive and is composed of one or more surface patches.

 
 <complexType name="SymbolType">
 <annotation>
 <documentation>[complexType of] The symbol property.

 
 <complexType name="TemporalCRSRefType">
 <annotation>
 <documentation>Association to a temporal coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="TemporalCRSType">
 <annotation>
 <documentation>A 1D coordinate reference system used for the recording of time.

 
 <complexType name="TemporalCSRefType">
 <annotation>
 <documentation>Association to a temporal coordinate system, either referencing or containing the definition of that coordinate system.

 
 <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.

 
 <complexType abstract="true" name="TemporalDatumBaseType">
 <annotation>
 <documentation>Partially defines the origin of a temporal coordinate reference system.

 
 <complexType name="TemporalDatumRefType">
 <annotation>
 <documentation>Association to a temporal datum, either referencing or containing the definition of that datum.

 
 <complexType name="TemporalDatumType">
 <annotation>
 <documentation>Defines the origin of a temporal coordinate reference system.

 
 <complexType name="TimeCalendarEraType">
 <annotation>
 <documentation xml:lang="en">In every calendar, years are numbered relative to the date of a
 reference event that defines a calendar era.

 
 <complexType name="TimeCalendarType">
 <annotation>
 <documentation xml:lang="en">A calendar is a discrete temporal reference system
 that provides a basis for defining temporal position to a resolution of one day.

 
 <complexType final="#all" name="TimeClockType">
 <annotation>
 <documentation xml:lang="en">A clock provides a basis for defining temporal position within a day.
 A clock must be used with a calendar in order to provide a complete description of a temporal position
 within a specific day.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractTimeReferenceSystemType">
 <sequence>
 <element name="referenceEvent" type="gml:StringOrRefType">
 <annotation>
 <documentation>Name or description of an event, such as solar noon or sunrise,
 which fixes the position of the base scale of the clock.</documentation>
 </annotation>
 </element>
 <element name="referenceTime" type="time">
 <annotation>
 <documentation>time of day associated with the reference event expressed as
 a time of day in the given clock.

 
 <complexType name="TimeEdgePropertyType">
 <annotation>
 <documentation>A time edge property can either be any time edge element encapsulated in an element of this type
 or an XLink reference to a remote time edge element (where remote includes elements located elsewhere in the same document).

 
 <complexType final="#all" name="TimeIntervalLengthType">
 <annotation>
 <documentation xml:lang="en">This type extends the built-in xsd:decimal simple type to allow floating-point
 values for temporal length.

 
 <complexType name="TimeNodePropertyType">
 <annotation>
 <documentation>A time node property can either be any time node element encapsulated in an element of this type
 or an XLink reference to a remote time node element (where remote includes elements located elsewhere in the same document).

 
 <complexType name="TimeOrdinalEraType">
 <annotation>
 <documentation xml:lang="en">Ordinal temporal reference systems are often hierarchically structured
 such that an ordinal era at a given level of the hierarchy includes a
 sequence of shorter, coterminous ordinal eras.

 
 <complexType name="TimeOrdinalReferenceSystemType">
 <annotation>
 <documentation xml:lang="en">In an ordinal reference system the order of events in time can be well
 established, but the magnitude of the intervals between them can not be
 accurately determined (e.g.

 
 <complexType final="#all" name="TimePositionType">
 <annotation>
 <documentation xml:lang="en">Direct representation of a temporal position.
 Indeterminate time values are also allowed, as described in ISO 19108.

 
 <simpleType name="TimePositionUnion">
 <annotation>
 <documentation xml:lang="en">The ISO 19108:2002 hierarchy of subtypes for temporal position are collapsed
 by defining a union of XML Schema simple types for indicating temporal position relative
 to a specific reference system.
 Dates and dateTime may be indicated with varying degrees of precision.
 dateTime by itself does not allow right-truncation, except for fractions of seconds.
 When used with non-Gregorian calendars based on years, months, days,
 the same lexical representation should still be used, with leading zeros added if the
 year value would otherwise have fewer than four digits.
 An ordinal position may be referenced via URI identifying the definition of an ordinal era.
 A time coordinate value is indicated as a decimal (e.g.

 
 <complexType name="TimeTopologyComplexPropertyType">
 <annotation>
 <documentation>A time topology complex property can either be any time topology complex element
 encapsulated in an element of this type or an XLink reference to a remote time topology complex element
 (where remote includes elements located elsewhere in the same document).

 
 <complexType name="TimeTopologyPrimitivePropertyType">
 <annotation>
 <documentation>A time topology primitive property can either hold any time topology complex element
 eor carry an XLink reference to a remote time topology complex element
 (where remote includes elements located elsewhere in the same document).

 
 <complexType name="TimeType">
 <annotation>
 <documentation>Value of a time or temporal quantity, with its units.

 
 <complexType name="TinType">
 <annotation>
 <documentation>A tin is a triangulated surface that uses
 the Delauny algorithm or a similar algorithm complemented with
 consideration of breaklines, stoplines, and maximum length of
 triangle sides.

 
 <complexType name="TopoCurveType">
 <annotation>
 <documentation>The end Node of each directedEdge of a TopoCurveType
 is the start Node of the next directedEdge of the TopoCurveType in document order.

 
 <complexType name="TopologyStyleType">
 <annotation>
 <documentation>[complexType of] The style descriptor for topologies of a feature.

 
 <complexType name="TopoPointType">
 <annotation>
 <documentation>The intended use of TopoPoint is to appear within a point feature to express the structural and possibly geometric relationships of this point to other features via shared node definitions.

 
 <complexType name="TopoSolidType">
 <annotation>
 <documentation>The topological boundary of a TopoSolid consists of a set of directed faces.

 
 <complexType name="TopoSurfaceType">
 <annotation>
 <documentation>The TopoSurface type and element represent a homogeneous topological expression, a set of directed faces, which if realised are isomorphic to a geometric surface primitive.

 
 <complexType name="TopoVolumeType">
 <annotation>
 <documentation>The TopoVolume type and element represent a homogeneous topological expression, a set of directed TopoSolids, which if realised are isomorphic to a geometric solid primitive.

 
 <complexType name="TransformationRefType">
 <annotation>
 <documentation>Association to a transformation, either referencing or containing the definition of that transformation.

 
 <complexType name="TransformationType">
 <annotation>
 <documentation>A concrete operation on coordinates that usually includes a change of datum.

 
 <complexType name="TriangleType">
 <annotation>
 <documentation>Represents a triangle as a surface with an outer boundary consisting of a linear ring.

 
 <complexType name="TriangulatedSurfaceType">
 <annotation>
 <documentation>A triangulated surface is a polyhedral
 surface that is composed only of triangles.

 
 <complexType name="UnitDefinitionType">
 <annotation>
 <documentation>Definition of a unit of measure (or uom).

 
 <complexType name="UnitOfMeasureType">
 <annotation>
 <documentation>Reference to a unit of measure definition that applies to all the numerical values described by the element containing this element.

 
 <complexType name="UserDefinedCSRefType">
 <annotation>
 <documentation>Association to a user-defined coordinate system, either referencing or containing the definition of that coordinate system.

 
 <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.

 
 <complexType name="ValueArrayType">
 <annotation>
 <documentation>A Value Array is used for homogeneous arrays of primitive and aggregate values.

 
 <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.

 
 <complexType name="VerticalCRSRefType">
 <annotation>
 <documentation>Association to a vertical coordinate reference system, either referencing or containing the definition of that reference system.

 
 <complexType name="VerticalCRSType">
 <annotation>
 <documentation>A 1D coordinate reference system used for recording heights or depths.

 
 <complexType name="VerticalCSRefType">
 <annotation>
 <documentation>Association to a vertical coordinate system, either referencing or containing the definition of that coordinate system.

 
 <complexType name="VerticalCSType">
 <annotation>
 <documentation>A one-dimensional coordinate system used to record the heights (or depths) of points.

 
 <complexType name="VerticalDatumRefType">
 <annotation>
 <documentation>Association to a vertical datum, either referencing or containing the definition of that datum.

 
 <complexType name="VerticalDatumTypeType">
 <annotation>
 <documentation>Type of a vertical datum.

 
 <complexType name="VerticalDatumType">
 <annotation>
 <documentation>A textual description and/or a set of parameters identifying a particular reference level surface used as a zero-height surface, including its position with respect to the Earth for any of the height types recognized by this standard.

 
 <complexType name="VolumeType">
 <annotation>
 <documentation>Value of a spatial volume quantity, with its units.

 
 <complexType name="AbsoluteExternalPositionalAccuracyType">
 <annotation>
 <documentation>Closeness of reported coordinate values to values accepted as or being true. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractPositionalAccuracyType">
 <sequence>
 <element ref="gml:result"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractContinuousCoverageType">
 <annotation>
 <documentation>A continuous coverage as defined in ISO 19123 is a coverage that can return different values for the same feature attribute at different direct positions within a single spatiotemporal object in its spatiotemporal domain</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCoverageType">
 <sequence>
 <element minOccurs="0" ref="gml:coverageFunction"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCoordinateOperationBaseType">
 <annotation>
 <documentation>Basic encoding for coordinate operation objects, simplifying and restricting the DefinitionType as needed. </documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:DefinitionType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:coordinateOperationName"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCoordinateOperationType">
 <annotation>
 <documentation>A mathematical operation on coordinates that transforms or converts coordinates to another coordinate reference system. Many but not all coordinate operations (from CRS A to CRS B) also uniquely define the inverse operation (from CRS B to CRS A). In some cases, the operation method algorithm for the inverse operation is the same as for the forward algorithm, but the signs of some operation parameter values must be reversed. In other cases, different algorithms are required for the forward and inverse operations, but the same operation parameter values are used. If (some) entirely different parameter values are needed, a different coordinate operation shall be defined.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCoordinateOperationBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:coordinateOperationID">
 <annotation>
 <documentation>Set of alternative identifications of this coordinate operation. The first coordinateOperationID, if any, is normally the primary identification code, and any others are aliases. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:remarks">
 <annotation>
 <documentation>Comments on or information about this coordinate operation, including source information. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:operationVersion"/>
 <element minOccurs="0" ref="gml:validArea"/>
 <element minOccurs="0" ref="gml:scope"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:_positionalAccuracy">
 <annotation>
 <documentation>Unordered set of estimates of the impact of this coordinate operation on point position accuracy. Gives position error estimates for target coordinates of this coordinate operation, assuming no errors in source coordinates. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:sourceCRS"/>
 <element minOccurs="0" ref="gml:targetCRS"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCoordinateSystemBaseType">
 <annotation>
 <documentation>Basic encoding for coordinate system objects, simplifying and restricting the DefinitionType as needed. </documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:DefinitionType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:csName"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCoordinateSystemType">
 <annotation>
 <documentation>A coordinate system (CS) is the set of coordinate system axes that spans a given coordinate space. A CS is derived from a set of (mathematical) rules for specifying how coordinates in a given space are to be assigned to points. The coordinate values in a coordinate tuple shall be recorded in the order in which the coordinate system axes associations are recorded, whenever those coordinates use a coordinate reference system that uses this coordinate system. This abstract complexType shall not be used, extended, or restricted, in an Application Schema, to define a concrete subtype with a meaning equivalent to a concrete subtype specified in this document. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCoordinateSystemBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:csID">
 <annotation>
 <documentation>Set of alternative identifications of this coordinate system. The first csID, if any, is normally the primary identification code, and any others are aliases. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:remarks">
 <annotation>
 <documentation>Comments on or information about this coordinate system, including data source information. </documentation>
 </annotation>
 </element>
 <element maxOccurs="unbounded" ref="gml:usesAxis">
 <annotation>
 <documentation>Ordered sequence of associations to the coordinate system axes included in this coordinate system. </documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCoverageType">
 <annotation>
 <documentation>Abstract element which acts as the head of a substitution group for coverages. Note that a coverage is a GML feature.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractFeatureType">
 <sequence>
 <element ref="gml:domainSet"/>
 <element ref="gml:rangeSet"/>
 </sequence>
 <attribute name="dimension" type="positiveInteger" use="optional"/>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCurveSegmentType">
 <annotation>
 <documentation>Curve segment defines a homogeneous segment of a curve.</documentation>
 </annotation>
 <sequence/>
 <attribute default="0" name="numDerivativesAtStart" type="integer" use="optional">
 <annotation>
 <documentation>The attribute "numDerivativesAtStart" specifies the type of continuity between this curve segment and its predecessor. If this is the first curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
 NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.</documentation>
 </annotation>
 </attribute>
 <attribute default="0" name="numDerivativesAtEnd" type="integer" use="optional">
 <annotation>
 <documentation>The attribute "numDerivativesAtEnd" specifies the type of continuity between this curve segment and its successor. If this is the last curve segment in the curve, one of these values, as appropriate, is ignored. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
 NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.</documentation>
 </annotation>
 </attribute>
 <attribute default="0" name="numDerivativeInterior" type="integer" use="optional">
 <annotation>
 <documentation>The attribute "numDerivativesInterior" specifies the type of continuity that is guaranteed interior to the curve. The default value of "0" means simple continuity, which is a mandatory minimum level of continuity. This level is referred to as "C 0 " in mathematical texts. A value of 1 means that the function and its first derivative are continuous at the appropriate end point: "C 1 " continuity. A value of "n" for any integer means the function and its first n derivatives are continuous: "C n " continuity.
 NOTE: Use of these values is only appropriate when the basic curve definition is an underdetermined system. For example, line string segments cannot support continuity above C 0 , since there is no spare control parameter to adjust the incoming angle at the end points of the segment. Spline functions on the other hand often have extra degrees of freedom on end segments that allow them to adjust the values of the derivatives to support C 1 or higher continuity.</documentation>
 </annotation>
 </attribute>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractCurveType">
 <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>
 
 

 
 <complexType abstract="true" name="AbstractDatumBaseType">
 <annotation>
 <documentation>Basic encoding for datum objects, simplifying and restricting the DefinitionType as needed. </documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:DefinitionType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:datumName"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractDatumType">
 <annotation>
 <documentation>A datum specifies the relationship of a coordinate system to the earth, thus creating a coordinate reference system. A datum uses a parameter or set of parameters that determine the location of the origin of the coordinate reference system. Each datum subtype can be associated with only specific types of coordinate systems. This abstract complexType shall not be used, extended, or restricted, in an Application Schema, to define a concrete subtype with a meaning equivalent to a concrete subtype specified in this document. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractDatumBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:datumID">
 <annotation>
 <documentation>Set of alternative identifications of this datum. The first datumID, if any, is normally the primary identification code, and any others are aliases. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:remarks">
 <annotation>
 <documentation>Comments on this reference system, including source information. </documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:anchorPoint"/>
 <element minOccurs="0" ref="gml:realizationEpoch"/>
 <element minOccurs="0" ref="gml:validArea"/>
 <element minOccurs="0" ref="gml:scope"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractDiscreteCoverageType">
 <annotation>
 <documentation>A discrete coverage consists of a domain set, range set and optionally a coverage function. The domain set consists of either geometry or temporal objects, finite in number. The range set is comprised of a finite number of attribute values each of which is associated to every direct position within any single spatiotemporal object in the domain. In other words, the range values are constant on each spatiotemporal object in the domain. This coverage function maps each element from the coverage domain to an element in its range. This definition conforms to ISO 19123.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCoverageType">
 <sequence>
 <element minOccurs="0" ref="gml:coverageFunction"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractFeatureCollectionType">
 <annotation>
 <documentation>A feature collection contains zero or more features.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractFeatureType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:featureMember"/>
 <element minOccurs="0" ref="gml:featureMembers"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractFeatureType">
 <annotation>
 <documentation>An abstract feature provides a set of common properties, including id, metaDataProperty, name and description inherited from AbstractGMLType, plus boundedBy.    A concrete feature type must derive from this type and specify additional  properties in an application schema. A feature must possess an identifying attribute ('id' - 'fid' has been deprecated).</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element minOccurs="0" ref="gml:boundedBy"/>
 <element minOccurs="0" ref="gml:location">
 <annotation>
 <appinfo>deprecated</appinfo>
 <documentation>deprecated in GML version 3.1</documentation>
 </annotation>
 </element>
 <!-- additional properties must be specified in an application schema -->
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeneralConversionType">
 <annotation>
 <documentation>An abstract operation on coordinates that does not include any change of datum. The best-known example of a coordinate conversion is a map projection. The parameters describing coordinate conversions are defined rather than empirically derived. Note that some conversions have no parameters.
 This abstract complexType is expected to be extended for well-known operation methods with many Conversion instances, in Application Schemas that define operation-method-specialized element names and contents. This conversion uses an operation method, usually with associated parameter values. However, operation methods and parameter values are directly associated with concrete subtypes, not with this abstract type. All concrete types derived from this type shall extend this type to include a "usesMethod" element that references the "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include zero or more elements each named "uses...Value" that each use the type of an element substitutable for the "_generalParameterValue" element. </documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:AbstractCoordinateOperationType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:coordinateOperationName"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:coordinateOperationID"/>
 <element minOccurs="0" ref="gml:remarks"/>
 <element minOccurs="0" ref="gml:validArea"/>
 <element minOccurs="0" ref="gml:scope"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:_positionalAccuracy"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeneralDerivedCRSType">
 <annotation>
 <documentation>A coordinate reference system that is defined by its coordinate conversion from another coordinate reference system (not by a datum). This abstract complexType shall not be used, extended, or restricted, in an Application Schema, to define a concrete subtype with a meaning equivalent to a concrete subtype specified in this document. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractReferenceSystemType">
 <sequence>
 <element ref="gml:baseCRS"/>
 <element ref="gml:definedByConversion"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="AbstractGeneralOperationParameterRefType">
 <annotation>
 <documentation>Association to an operation parameter or group, either referencing or containing the definition of that parameter or group. </documentation>
 </annotation>
 <sequence minOccurs="0">
 <element ref="gml:_GeneralOperationParameter"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeneralOperationParameterType">
 <annotation>
 <documentation>Abstract definition of a parameter or group of parameters used by an operation method. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:DefinitionType">
 <sequence>
 <element minOccurs="0" ref="gml:minimumOccurs"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeneralParameterValueType">
 <annotation>
 <documentation>Abstract parameter value or group of parameter values.
 This abstract complexType is expected to be extended and restricted for well-known operation methods with many instances, in Application Schemas that define operation-method-specialized element names and contents. Specific parameter value elements are directly contained in concrete subtypes, not in this abstract type. All concrete types derived from this type shall extend this type to include one "...Value" element with an appropriate type, which should be one of the element types allowed in the ParameterValueType. In addition, all derived concrete types shall extend this type to include a "valueOfParameter" element that references one element substitutable for the "OperationParameter" element. </documentation>
 </annotation>
 <sequence/>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeneralTransformationType">
 <annotation>
 <documentation>An abstract operation on coordinates that usually includes a change of Datum. The parameters of a coordinate transformation are empirically derived from data containing the coordinates of a series of points in both coordinate reference systems. This computational process is usually "over-determined", allowing derivation of error (or accuracy) estimates for the transformation. Also, the stochastic nature of the parameters may result in multiple (different) versions of the same coordinate transformation.
 This abstract complexType is expected to be extended for well-known operation methods with many Transformation instances, in Application Schemas that define operation-method-specialized value element names and contents. This transformation uses an operation method with associated parameter values. However, operation methods and parameter values are directly associated with concrete subtypes, not with this abstract type. All concrete types derived from this type shall extend this type to include a "usesMethod" element that references one "OperationMethod" element. Similarly, all concrete types derived from this type shall extend this type to include one or more elements each named "uses...Value" that each use the type of an element substitutable for the "_generalParameterValue" element. </documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:AbstractCoordinateOperationType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:coordinateOperationName"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:coordinateOperationID"/>
 <element minOccurs="0" ref="gml:remarks"/>
 <element ref="gml:operationVersion"/>
 <element minOccurs="0" ref="gml:validArea"/>
 <element minOccurs="0" ref="gml:scope"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:_positionalAccuracy"/>
 <element ref="gml:sourceCRS"/>
 <element ref="gml:targetCRS"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeometricAggregateType">
 <annotation>
 <documentation>This is the abstract root type of the geometric aggregates.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometryType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeometricPrimitiveType">
 <annotation>
 <documentation>This is the abstract root type of the geometric primitives. A geometric primitive is a geometric object that is not
 decomposed further into other primitives in the system. All primitives are oriented in the direction implied by the sequence of their
 coordinate tuples.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometryType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGeometryType">
 <annotation>
 <documentation>All geometry elements are derived directly or indirectly from this abstract supertype. A geometry element may
 have an identifying attribute ("gml:id"), a name (attribute "name") and a description (attribute "description"). It may be associated
 with a spatial reference system (attribute "srsName"). The following rules shall be adhered: - Every geometry type shall derive
 from this abstract type. - Every geometry element (i.e. an element of a geometry type) shall be directly or indirectly in the
 substitution group of _Geometry.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <attribute name="gid" type="string" use="optional">
 <annotation>
 <documentation>This attribute is included for backward compatibility with GML 2 and is deprecated with GML 3.
 This identifer is superceded by "gml:id" inherited from AbstractGMLType. The attribute "gid" should not be used
 anymore and may be deleted in future versions of GML without further notice.</documentation>
 </annotation>
 </attribute>
 <attributeGroup ref="gml:SRSReferenceGroup"/>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractGMLType">
 <annotation>
 <documentation>All complexContent GML elements are directly or indirectly derived from this abstract supertype
 to establish a hierarchy of GML types that may be distinguished from other XML types by their ancestry.
 Elements in this hierarchy may have an ID and are thus referenceable.</documentation>
 </annotation>
 <sequence>
 <group ref="gml:StandardObjectProperties"/>
 </sequence>
 <attribute ref="gml:id" use="optional"/>
 </complexType>
 
 

 
 <complexType name="AbstractGriddedSurfaceType">
 <annotation>
 <documentation>A gridded surface is a parametric curve
 surface derived from a rectangular grid in the parameter
 space. The rows from this grid are control points for
 horizontal surface curves; the columns are control points
 for vertical surface curves. The working assumption is that
 for a pair of parametric co-ordinates (s, t) that the
 horizontal curves for each integer offset are calculated
 and evaluated at "s". The defines a sequence of control
 points:
 cn(s) : s  1 .....columns
 From this sequence a vertical curve is calculated for "s",
 and evaluated at "t". In most cases, the order of
 calculation (horizontal-vertical vs. vertical-horizontal)
 does not make a difference. Where it does, the horizontal-
 vertical order shall be the one used.
 Logically, any pair of curve interpolation types can lead
 to a subtype of GriddedSurface. The following clauses
 define some most commonly encountered surfaces that can
 be represented in this manner.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractParametricCurveSurfaceType">
 <sequence>
 <group ref="gml:PointGrid">
 <annotation>
 <documentation>This is the double indexed sequence
 of control points, given in row major form.
 NOTE! There in no assumption made about the shape
 of the grid.
 For example, the positions need not effect a "21/2D"
 surface, consecutive points may be equal in any or all
 of the ordinates. Further, the curves in either or both
 directions may close.</documentation>
 </annotation>
 </group>
 <element minOccurs="0" name="rows" type="integer">
 <annotation>
 <documentation>The attribute rows gives the number
 of rows in the parameter grid.</documentation>
 </annotation>
 </element>
 <element minOccurs="0" name="columns" type="integer">
 <annotation>
 <documentation>The attribute columns gives the number
 of columns in the parameter grid.</documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" mixed="true" name="AbstractMetaDataType">
 <annotation>
 <documentation>An abstract base type for complex metadata types.</documentation>
 </annotation>
 <attribute ref="gml:id" use="optional"/>
 </complexType>
 
 

 
 <complexType name="AbstractParametricCurveSurfaceType">
 <annotation>
 <documentation/>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractSurfacePatchType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractPositionalAccuracyType">
 <annotation>
 <documentation>Position error estimate (or accuracy) data. </documentation>
 </annotation>
 <sequence>
 <element minOccurs="0" ref="gml:measureDescription"/>
 </sequence>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractReferenceSystemBaseType">
 <annotation>
 <documentation>Basic encoding for reference system objects, simplifying and restricting the DefinitionType as needed.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:DefinitionType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:metaDataProperty"/>
 <element ref="gml:srsName"/>
 </sequence>
 <attribute ref="gml:id" use="required"/>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractReferenceSystemType">
 <annotation>
 <documentation>Description of a spatial and/or temporal reference system used by a dataset.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractReferenceSystemBaseType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:srsID">
 <annotation>
 <documentation>Set of alterative identifications of this reference system. The first srsID, if any, is normally the primary identification code, and any others are aliases.</documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:remarks">
 <annotation>
 <documentation>Comments on or information about this reference system, including source information.</documentation>
 </annotation>
 </element>
 <element minOccurs="0" ref="gml:validArea"/>
 <element minOccurs="0" ref="gml:scope"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="AbstractRingPropertyType">
 <annotation>
 <documentation>Encapsulates a ring to represent the surface boundary property of a surface.</documentation>
 </annotation>
 <sequence>
 <element ref="gml:_Ring"/>
 </sequence>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractRingType">
 <annotation>
 <documentation>An abstraction of a ring to support surface boundaries of different complexity.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometryType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="AbstractSolidType">
 <annotation>
 <documentation>An abstraction of a solid to support the different levels of complexity. A solid is always contiguous.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricPrimitiveType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractStyleType">
 <annotation>
 <documentation>[complexType of] The value of the top-level property. It is an abstract element. Used as the head element of the substitution group for extensibility purposes.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractSurfacePatchType">
 <annotation>
 <documentation>A surface patch defines a homogenuous portion of a surface.</documentation>
 </annotation>
 <sequence/>
 </complexType>
 
 

 
 <complexType name="AbstractSurfaceType">
 <annotation>
 <documentation>An abstraction of a surface to support the different levels of complexity. A surface is always a continuous region of a plane.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGeometricPrimitiveType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeComplexType">
 <annotation>
 <documentation xml:lang="en">The abstract supertype for temporal complexes.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractTimeObjectType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeGeometricPrimitiveType">
 <annotation>
 <documentation xml:lang="en">The abstract supertype for temporal geometric primitives.
 A temporal geometry must be associated with a temporal reference system via URI.
 The Gregorian calendar with UTC is the default reference system, following ISO
 8601. Other reference systems in common use include the GPS calendar and the
 Julian calendar.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractTimePrimitiveType">
 <attribute default="#ISO-8601" name="frame" type="anyURI" use="optional"/>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeObjectType">
 <annotation>
 <documentation xml:lang="en">The abstract supertype for temporal objects.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimePrimitiveType">
 <annotation>
 <documentation xml:lang="en">The abstract supertype for temporal primitives.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractTimeObjectType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0"
 name="relatedTime" type="gml:RelatedTimeType"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeReferenceSystemType">
 <annotation>
 <documentation xml:lang="en">A value in the time domain is measured relative to a temporal reference system. Common
 types of reference systems include calendars, ordinal temporal reference systems, and
 temporal coordinate systems (time elapsed since some epoch, e.g. UNIX time).</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:DefinitionType">
 <sequence>
 <element minOccurs="0" name="domainOfValidity" type="string"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeSliceType">
 <annotation>
 <documentation xml:lang="en">A timeslice encapsulates the time-varying properties of a dynamic feature--it
 must be extended to represent a timestamped projection of a feature. The dataSource
 property describes how the temporal data was acquired.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element ref="gml:validTime"/>
 <element minOccurs="0" ref="gml:dataSource"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTimeTopologyPrimitiveType">
 <annotation>
 <documentation xml:lang="en">The element "complex" carries a reference to the complex containing this primitive.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractTimePrimitiveType">
 <sequence>
 <element minOccurs="0" name="complex" type="gml:ReferenceType"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTopologyType">
 <complexContent>
 <extension base="gml:AbstractGMLType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="AbstractTopoPrimitiveType">
 <complexContent>
 <extension base="gml:AbstractTopologyType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:isolated"/>
 <element minOccurs="0" ref="gml:container"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <simpleType name="AesheticCriteriaType">
 <annotation>
 <documentation>Graph-specific styling property.</documentation>
 </annotation>
 <restriction base="string">
 <enumeration value="MIN_CROSSINGS"/>
 <enumeration value="MIN_AREA"/>
 <enumeration value="MIN_BENDS"/>
 <enumeration value="MAX_BENDS"/>
 <enumeration value="UNIFORM_BENDS"/>
 <enumeration value="MIN_SLOPES"/>
 <enumeration value="MIN_EDGE_LENGTH"/>
 <enumeration value="MAX_EDGE_LENGTH"/>
 <enumeration value="UNIFORM_EDGE_LENGTH"/>
 <enumeration value="MAX_ANGULAR_RESOLUTION"/>
 <enumeration value="MIN_ASPECT_RATIO"/>
 <enumeration value="MAX_SYMMETRIES"/>
 </restriction>
 </simpleType>
 
 

 
 <complexType name="AffinePlacementType">
 <annotation>
 <documentation>A placement takes a standard geometric
 construction and places it in geographic space. It defines a
 transformation from a constructive parameter space to the
 co-ordinate space of the co-ordinate reference system being used.
 Parameter spaces in formulae in this International Standard are
 given as (u, v) in 2D and(u, v, w) in 3D. Co-ordinate reference
 systems positions are given in formulae, in this International
 Standard, by either (x, y) in 2D, or (x, y, z) in 3D.
 Affine placements are defined by linear transformations from
 parameter space to the target co-ordiante space. 2-dimensional
 Cartesian parameter space,(u,v) transforms into 3-dimensional co-
 ordinate reference systems,(x,y,z) by using an affine
 transformation,(u,v)->(x,y,z) which is defined :
 x        ux vx          x0
 u
 y =        uy vy   + y0
 v
 x        uz vz        z0
 Then, given this equation, the location element of the
 AffinePlacement is the direct position (x0, y0, z0), which is the
 target position of the origin in (u, v). The two reference
 directions (ux, uy, uz) and (vx, vy, vz) are the target
 directions of the unit vectors at the origin in (u, v).</documentation>
 </annotation>
 <sequence>
 <element name="location" type="gml:DirectPositionType">
 <annotation>
 <documentation>The location property gives
 the target of the parameter space origin. This is the vector
 (x0, y0, z0) in the formulae above.</documentation>
 </annotation>
 </element>
 <element maxOccurs="unbounded" name="refDirection" type="gml:VectorType">
 <annotation>
 <documentation>The attribute refDirection gives the
 target directions for the co-ordinate basis vectors of the
 parameter space. These are the columns of the matrix in the
 formulae given above. The number of directions given shall be
 inDimension. The dimension of the directions shall be
 outDimension.</documentation>
 </annotation>
 </element>
 <element name="inDimension" type="positiveInteger">
 <annotation>
 <documentation>Dimension of the constructive parameter
 space.</documentation>
 </annotation>
 </element>
 <element name="outDimension" type="positiveInteger">
 <annotation>
 <documentation>Dimension of the co-ordinate space.</documentation>
 </annotation>
 </element>
 </sequence>
 </complexType>
 
 

 
 <complexType name="AngleChoiceType">
 <annotation>
 <documentation>Value of an angle quantity provided in either degree-minute-second format or single value format.</documentation>
 </annotation>
 <choice>
 <element ref="gml:angle"/>
 <element ref="gml:dmsAngle"/>
 </choice>
 </complexType>
 
 

 
 <complexType name="AngleType">
 <annotation>
 <documentation>Value of an angle quantity recorded as a single number, with its units. Uses the MeasureType with the restriction that the unit of measure referenced by uom must be suitable for an angle, such as degrees or radians.</documentation>
 </annotation>
 <simpleContent>
 <restriction base="gml:MeasureType"/>
 </simpleContent>
 </complexType>
 
 

 
 <complexType name="ArcByBulgeType">
 <annotation>
 <documentation>An ArcByBulge is an arc string with only one arc unit, i.e. two control points and one bulge.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:ArcStringByBulgeType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only. The number of direct positions in the list must be two.</documentation>
 </annotation>
 <choice maxOccurs="2" minOccurs="2">
 <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>
 </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>
 <element name="bulge" type="double">
 <annotation>
 <documentation>The bulge controls the offset of each arc's midpoint. The "bulge" is the real number multiplier for the normal that determines the offset direction of the midpoint of each arc. The length of the bulge sequence is exactly 1 less than the length of the control point array, since a bulge is needed for each pair of adjacent points in the control point array. The bulge is not given by a distance, since it is simply a multiplier for the normal.
 The midpoint of the resulting arc is given by: midPoint = ((startPoint + endPoint)/2.0) + bulge*normal</documentation>
 </annotation>
 </element>
 <element name="normal" type="gml:VectorType">
 <annotation>
 <documentation>The attribute "normal" is a vector normal (perpendicular) to the chord of the arc, the line joining the first and last
 point of the arc. In a 2D coordinate system, there are only two possible directions for the normal, and it is often given as a signed real, indicating its length, with a positive sign indicating a left turn angle from the chord line, and a negative sign indicating a right turn from the chord. In 3D, the normal determines the plane of the arc, along with the start and endPoint of the arc.
 The normal is usually a unit vector, but this is not absolutely necessary. If the normal is a zero vector, the geometric object becomes equivalent to the straight line between the two end points. The length of the normal sequence is exactly the same as for the bulge sequence, 1 less than the control point sequence length.</documentation>
 </annotation>
 </element>
 </sequence>
 <attribute fixed="1" name="numArc" type="integer" use="optional">
 <annotation>
 <documentation>An arc is an arc string consiting of a single arc, the attribute is fixed to "1".</documentation>
 </annotation>
 </attribute>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="ArcByCenterPointType">
 <annotation>
 <documentation>This variant of the arc requires that the points on the arc have to be computed instead of storing the coordinates directly. The control point is the center point of the arc plus the radius and the bearing at start and end. This represenation can be used only in 2D.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) element. The "pos" element contains a center point that is only part of this curve segment, a "pointProperty" element contains a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (reuse of existing points).
 2. The "posList" element can be used to specifiy the coordinates of the center point, too. The number of direct positions in the list must be one.</documentation>
 </annotation>
 <choice>
 <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>
 </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>
 <element name="radius" type="gml:LengthType">
 <annotation>
 <documentation>The radius of the arc.</documentation>
 </annotation>
 </element>
 <element minOccurs="0" name="startAngle" type="gml:AngleType">
 <annotation>
 <documentation>The bearing of the arc at the start.</documentation>
 </annotation>
 </element>
 <element minOccurs="0" name="endAngle" type="gml:AngleType">
 <annotation>
 <documentation>The bearing of the arc at the end.</documentation>
 </annotation>
 </element>
 </sequence>
 <attribute fixed="circularArcCenterPointWithRadius"
 name="interpolation" type="gml:CurveInterpolationType">
 <annotation>
 <documentation>The attribute "interpolation" specifies the curve interpolation mechanism used for this segment. This mechanism
 uses the control points and control parameters to determine the position of this curve segment. For an ArcByCenterPoint the interpolation is fixed as "circularArcCenterPointWithRadius".</documentation>
 </annotation>
 </attribute>
 <attribute fixed="1" name="numArc" type="integer" use="required">
 <annotation>
 <documentation>Since this type describes always a single arc, the attribute is fixed to "1".</documentation>
 </annotation>
 </attribute>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <simpleType name="ArcMinutesType">
 <annotation>
 <documentation>Integer number of arc-minutes in a degree-minute-second angular value.</documentation>
 </annotation>
 <restriction base="nonNegativeInteger">
 <maxInclusive value="59"/>
 </restriction>
 </simpleType>
 
 

 
 <simpleType name="ArcSecondsType">
 <annotation>
 <documentation>Number of arc-seconds in a degree-minute-second angular value.</documentation>
 </annotation>
 <restriction base="decimal">
 <minInclusive value="0.00"/>
 <maxExclusive value="60.00"/>
 </restriction>
 </simpleType>
 
 

 
 <complexType name="ArcStringByBulgeType">
 <annotation>
 <documentation>This variant of the arc computes the mid points of the arcs instead of storing the coordinates directly. The control point sequence consists of the start and end points of each arc plus the bulge.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only. The number of direct positions in the list must be at least two.</documentation>
 </annotation>
 <choice maxOccurs="unbounded" minOccurs="2">
 <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>
 </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>
 <element maxOccurs="unbounded" name="bulge" type="double">
 <annotation>
 <documentation>The bulge controls the offset of each arc's midpoint. The "bulge" is the real number multiplier for the normal that determines the offset direction of the midpoint of each arc. The length of the bulge sequence is exactly 1 less than the length of the control point array, since a bulge is needed for each pair of adjacent points in the control point array. The bulge is not given by a distance, since it is simply a multiplier for the normal.
 The midpoint of the resulting arc is given by: midPoint = ((startPoint + endPoint)/2.0) + bulge*normal</documentation>
 </annotation>
 </element>
 <element maxOccurs="unbounded" name="normal" type="gml:VectorType">
 <annotation>
 <documentation>The attribute "normal" is a vector normal (perpendicular) to the chord of the arc, the line joining the first and last
 point of the arc. In a 2D coordinate system, there are only two possible directions for the normal, and it is often given as a signed real, indicating its length, with a positive sign indicating a left turn angle from the chord line, and a negative sign indicating a right turn from the chord. In 3D, the normal determines the plane of the arc, along with the start and endPoint of the arc.
 The normal is usually a unit vector, but this is not absolutely necessary. If the normal is a zero vector, the geometric object becomes equivalent to the straight line between the two end points. The length of the normal sequence is exactly the same as for the bulge sequence, 1 less than the control point sequence length.</documentation>
 </annotation>
 </element>
 </sequence>
 <attribute fixed="circularArc2PointWithBulge"
 name="interpolation" type="gml:CurveInterpolationType">
 <annotation>
 <documentation>The attribute "interpolation" specifies the curve interpolation mechanism used for this segment. This mechanism
 uses the control points and control parameters to determine the position of this curve segment. For an ArcStringByBulge the interpolation is fixed as "circularArc2PointWithBulge".</documentation>
 </annotation>
 </attribute>
 <attribute name="numArc" type="integer" use="optional">
 <annotation>
 <documentation>The number of arcs in the arc string can be explicitly stated in this attribute. The number of control points in the arc string must be numArc + 1.</documentation>
 </annotation>
 </attribute>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="ArcStringType">
 <annotation>
 <documentation>An ArcString is a curve segment that uses three-point circular arc interpolation.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only. The number of direct positions in the list must be at least three.</documentation>
 </annotation>
 <choice maxOccurs="unbounded" minOccurs="3">
 <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>
 </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>
 <attribute fixed="circularArc3Points" name="interpolation" type="gml:CurveInterpolationType">
 <annotation>
 <documentation>The attribute "interpolation" specifies the curve interpolation mechanism used for this segment. This mechanism
 uses the control points and control parameters to determine the position of this curve segment. For an ArcString the interpolation is fixed as "circularArc3Points".</documentation>
 </annotation>
 </attribute>
 <attribute name="numArc" type="integer" use="optional">
 <annotation>
 <documentation>The number of arcs in the arc string can be explicitly stated in this attribute. The number of control points in the arc string must be 2 * numArc + 1.</documentation>
 </annotation>
 </attribute>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="ArcType">
 <annotation>
 <documentation>An Arc is an arc string with only one arc unit, i.e. three control points.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:ArcStringType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only. The number of direct positions in the list must be three.</documentation>
 </annotation>
 <choice maxOccurs="3" minOccurs="3">
 <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>
 </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>
 <attribute fixed="1" name="numArc" type="integer" use="optional">
 <annotation>
 <documentation>An arc is an arc string consiting of a single arc, the attribute is fixed to "1".</documentation>
 </annotation>
 </attribute>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="AreaType">
 <annotation>
 <documentation>Value of a spatial area quantity, with its units. Uses the MeasureType with the restriction that the unit of measure referenced by uom must be suitable for an area, such as square metres or square miles.</documentation>
 </annotation>
 <simpleContent>
 <restriction base="gml:MeasureType"/>
 </simpleContent>
 </complexType>
 
 

 
 <complexType name="ArrayAssociationType">
 <annotation>
 <documentation>A base for derived types used to specify complex types containing an array of objects, by unspecified UML association - either composition or aggregation.  An instance of this type contains elements representing Objects.
 Ideally this type would be derived by extension of AssociationType.
 However, this leads to a non-deterministic content model, since both the base and the extension have minOccurs="0", and is thus prohibited in XML Schema.</documentation>
 </annotation>
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:_Object"/>
 </sequence>
 </complexType>
 
 

 
 <complexType name="ArrayType">
 <annotation>
 <documentation>A non-abstract generic collection type that can be used as a document element for a homogeneous collection of any GML types - Geometries, Topologies, Features ...</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element minOccurs="0" ref="gml:members"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="AssociationType">
 <annotation>
 <documentation>A pattern or base for derived types used to specify complex types corresponding to an  unspecified UML association - either composition or aggregation.  Restricts the cardinality of Objects contained in the association to a maximum of one.  An instance of this type can contain an element representing an Object, or serve as a pointer to a remote Object.
 Descendents of this type can be restricted in an application schema to
 allow only specified classes as valid participants in the aggregation
 allow only association by reference (i.e. empty the content model) or by value (i.e. remove the xlinks).
 When used for association by reference, the value of the gml:remoteSchema attribute can be used to locate a schema fragment that constrains the target instance.
 In many cases it is desirable to impose the constraint prohibiting the occurence of both reference and value in the same instance, as that would be ambiguous.  This is accomplished by adding a directive in the annotation element of the element declaration.  This directive can be in the form of normative prose, or can use a Schematron pattern to automatically constrain co-occurrence - see the declaration for _strictAssociation below.
 If co-occurence is not prohibited, then both a link and content may be present.  If this occurs in an instance, then the rule for interpretation is that the instance found by traversing the href provides the normative value of the property, and should be used when possible.  The value(s) included as content may be used if the remote instance cannot be resolved.  This may be considered to be a "cached" version of the value(s).</documentation>
 </annotation>
 <sequence minOccurs="0">
 <element ref="gml:_Object"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType name="BagType">
 <annotation>
 <documentation>A non-abstract generic collection type that can be used as a document element for a collection of any GML types - Geometries, Topologies, Features ...
 FeatureCollections may only contain Features.  GeometryCollections may only contain Geometrys.  Bags are less constrained  they must contain objects that are substitutable for gml:_Object.  This may mix several levels, including Features, Definitions, Dictionaries, Geometries etc.
 The content model would ideally be
 member 0..*
 members 0..1
 member 0..*
 for maximum flexibility in building a collection from both homogeneous and distinct components:
 included "member" elements each contain a single Object
 an included "members" element contains a set of Objects
 However, this is non-deterministic, thus prohibited by XSD.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:member"/>
 <element minOccurs="0" ref="gml:members"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="BaseStyleDescriptorType">
 <annotation>
 <documentation>Base complex type for geometry, topology, label and graph styles.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element minOccurs="0" name="spatialResolution" type="gml:ScaleType"/>
 <element maxOccurs="unbounded" minOccurs="0"
 name="styleVariation" type="gml:StyleVariationType"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="smil20:animate"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="smil20:animateMotion"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="smil20:animateColor"/>
 <element maxOccurs="unbounded" minOccurs="0" ref="smil20:set"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="BaseUnitType">
 <annotation>
 <documentation>Definition of a unit of measure which is a base unit from the system of units.  A base unit cannot be derived by combination of other base units within this system.  Sometimes known as "fundamental unit".</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:UnitDefinitionType">
 <sequence>
 <element name="unitsSystem" type="gml:ReferenceType"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="BezierType">
 <annotation>
 <documentation>Bezier curves are polynomial splines that use Bezier or Bernstein polynomials for interpolation purposes. It is a special case of the B-Spline curve with two knots.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:BSplineType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only.</documentation>
 </annotation>
 <choice maxOccurs="unbounded" minOccurs="0">
 <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>
 </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>
 <element name="degree" type="nonNegativeInteger">
 <annotation>
 <documentation>The attribute "degree" shall be the degree of the polynomial used for interpolation in this spline.</documentation>
 </annotation>
 </element>
 <element maxOccurs="2" minOccurs="2" name="knot" type="gml:KnotPropertyType">
 <annotation>
 <documentation>The property "knot" shall be the sequence of distinct knots used to define the spline basis functions.</documentation>
 </annotation>
 </element>
 </sequence>
 <attribute fixed="polynomialSpline" name="interpolation" type="gml:CurveInterpolationType">
 <annotation>
 <documentation>The attribute "interpolation" specifies the curve interpolation mechanism used for this segment. This mechanism
 uses the control points and control parameters to determine the position of this curve segment. For a Bezier the interpolation is fixed as "polynomialSpline".</documentation>
 </annotation>
 </attribute>
 <attribute fixed="true" name="isPolynomial" type="boolean">
 <annotation>
 <documentation>The attribute isPolynomial is set to true as this is a polynomial spline.</documentation>
 </annotation>
 </attribute>
 <attribute name="knotType" type="gml:KnotTypesType" use="prohibited">
 <annotation>
 <documentation>The property "knotType" is not relevant for Bezier curve segments.</documentation>
 </annotation>
 </attribute>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <simpleType name="booleanList">
 <annotation>
 <documentation>XML List based on XML Schema boolean type.  An element of this type contains a space-separated list of boolean values {0,1,true,false}</documentation>
 </annotation>
 <list itemType="boolean"/>
 </simpleType>
 
 

 
 <simpleType name="booleanOrNullList">
 <annotation>
 <documentation>XML List based on the union type defined above.  An element declared with this type contains a space-separated list of boolean values {0,1,true,false} with null values interspersed as needed</documentation>
 </annotation>
 <list itemType="gml:booleanOrNull"/>
 </simpleType>
 
 

 
 <simpleType name="booleanOrNull">
 <annotation>
 <documentation>Union of the XML Schema boolean type and the GML Nulltype.  An element which uses this type may have content which is either a boolean {0,1,true,false} or a value from Nulltype</documentation>
 </annotation>
 <union memberTypes="gml:NullEnumeration boolean anyURI"/>
 </simpleType>
 
 

 
 <complexType name="BooleanPropertyType">
 <annotation>
 <documentation>Property whose content is a Boolean value.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:ValuePropertyType">
 <sequence minOccurs="0">
 <element ref="gml:Boolean"/>
 </sequence>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType abstract="true" name="BoundedFeatureType">
 <annotation>
 <documentation>Makes boundedBy mandatory</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:AbstractFeatureType">
 <sequence>
 <group ref="gml:StandardObjectProperties"/>
 <element ref="gml:boundedBy"/>
 <element minOccurs="0" ref="gml:location">
 <annotation>
 <appinfo>deprecated</appinfo>
 <documentation>deprecated in GML version 3.1</documentation>
 </annotation>
 </element>
 </sequence>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="BoundingShapeType">
 <annotation>
 <documentation>Bounding shape.</documentation>
 </annotation>
 <sequence>
 <choice>
 <element ref="gml:Envelope"/>
 <element ref="gml:Null"/>
 </choice>
 </sequence>
 </complexType>
 
 

 
 <complexType name="BSplineType">
 <annotation>
 <documentation>A B-Spline is a piecewise parametric polynomial or rational curve described in terms of control points and basis functions. Knots are breakpoints on the curve that connect its pieces. They are given as a non-decreasing sequence of real numbers. If the weights in the knots are equal then it is a polynomial spline. The degree is the algebraic degree of the basis functions.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <choice>
 <annotation>
 <documentation>GML supports two different ways to specify the control points of a curve segment.
 1. A sequence of "pos" (DirectPositionType) or "pointProperty" (PointPropertyType) elements. "pos" elements are control points that are only part of this curve segment, "pointProperty" elements contain a point that may be referenced from other geometry elements or reference another point defined outside of this curve segment (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 segment only.</documentation>
 </annotation>
 <choice maxOccurs="unbounded" minOccurs="0">
 <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>
 </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>
 <element name="degree" type="nonNegativeInteger">
 <annotation>
 <documentation>The attribute "degree" shall be the degree of the polynomial used for interpolation in this spline.</documentation>
 </annotation>
 </element>
 <element maxOccurs="unbounded" minOccurs="2" name="knot" type="gml:KnotPropertyType">
 <annotation>
 <documentation>The property "knot" shall be the sequence of distinct knots used to define the spline basis functions.</documentation>
 </annotation>
 </element>
 </sequence>
 <attribute default="polynomialSpline" name="interpolation" type="gml:CurveInterpolationType">
 <annotation>
 <documentation>The attribute "interpolation" specifies the curve interpolation mechanism used for this segment. This mechanism
 uses the control points and control parameters to determine the position of this curve segment. For a BSpline the interpolation can be either "polynomialSpline" or "rationalSpline", default is "polynomialSpline".</documentation>
 </annotation>
 </attribute>
 <attribute name="isPolynomial" type="boolean" use="optional">
 <annotation>
 <documentation>The attribute isPolynomial is set to true if this is a polynomial spline.</documentation>
 </annotation>
 </attribute>
 <attribute name="knotType" type="gml:KnotTypesType" use="optional">
 <annotation>
 <documentation>The attribute "knotType" gives the type of knot distribution used in defining this spline. This is for information only
 and is set according to the different construction-functions.</documentation>
 </annotation>
 </attribute>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <simpleType name="CalDate">
 <annotation>
 <documentation xml:lang="en">Calendar dates may be indicated with varying degrees of precision,
 using year, year-month, date.
 When used with non-Gregorian calendars based on years, months, days,
 the same lexical representation should still be used, with leading zeros added if the
 year value would otherwise have fewer than four digits.
 time is used for a position that recurs daily (see clause 5.4.4.2 of ISO 19108:2002).</documentation>
 </annotation>
 <union memberTypes="date gYearMonth gYear"/>
 </simpleType>
 
 

 
 <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>
 
 

 
 <complexType name="CartesianCSType">
 <annotation>
 <documentation>A 1-, 2-, or 3-dimensional coordinate system. Gives the position of points relative to orthogonal straight axes in the 2- and 3-dimensional cases. In the 1-dimensional case, it contains a single straight coordinate axis. In the multi-dimensional case, all axes shall have the same length unit of measure. A CartesianCS shall have one, two, or three usesAxis associations. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCoordinateSystemType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CategoryExtentType">
 <annotation>
 <documentation>Restriction of list type to store a 2-point range of ordinal values. If one member is a null, then this is a single ended interval.</documentation>
 </annotation>
 <simpleContent>
 <restriction base="gml:CodeOrNullListType">
 <length value="2"/>
 </restriction>
 </simpleContent>
 </complexType>
 
 

 
 <complexType name="CategoryPropertyType">
 <annotation>
 <documentation>Property whose content is a Category.</documentation>
 </annotation>
 <complexContent>
 <restriction base="gml:ValuePropertyType">
 <sequence minOccurs="0">
 <element ref="gml:Category"/>
 </sequence>
 </restriction>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CircleByCenterPointType">
 <annotation>
 <documentation>A CircleByCenterPoint is an ArcByCenterPoint with identical start and end angle to form a full circle. Again, this represenation can be used only in 2D.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:ArcByCenterPointType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CircleType">
 <annotation>
 <documentation>A Circle is an arc whose ends coincide to form a simple closed loop. The "start" and "end" bearing are equal and shall be the bearing for the first controlPoint listed. The three control points must be distinct non-co-linear points for the Circle to be unambiguously defined. The arc is simply extended past the third control point until the first control point is encountered.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:ArcType"/>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="ClothoidType">
 <annotation>
 <documentation>A clothoid, or Cornu's spiral, is plane
 curve whose curvature is a fixed function of its length.
 In suitably chosen co-ordinates it is given by Fresnel's
 integrals.
 x(t) = 0-integral-t cos(AT*T/2)dT
 y(t) = 0-integral-t sin(AT*T/2)dT
 This geometry is mainly used as a transition curve between
 curves of type straight line to circular arc or circular arc
 to circular arc. With this curve type it is possible to
 achieve a C2-continous transition between the above mentioned
 curve types. One formula for the Clothoid is A*A = R*t where
 A is constant, R is the varying radius of curvature along the
 the curve and t is the length along and given in the Fresnel
 integrals.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveSegmentType">
 <sequence>
 <element name="refLocation">
 <complexType>
 <sequence>
 <element ref="gml:AffinePlacement">
 <annotation>
 <documentation>The "refLocation" is an affine mapping
 that places  the curve defined by the Fresnel Integrals
 into the co-ordinate reference system of this object.</documentation>
 </annotation>
 </element>
 </sequence>
 </complexType>
 </element>
 <element name="scaleFactor" type="decimal">
 <annotation>
 <documentation>The element gives the value for the
 constant in the Fresnel's integrals.</documentation>
 </annotation>
 </element>
 <element name="startParameter" type="double">
 <annotation>
 <documentation>The startParameter is the arc length
 distance from the inflection point that will be the start
 point for this curve segment. This shall be lower limit
 used in the Fresnel integral and is the value of the
 constructive parameter of this curve segment at its start
 point. The startParameter can either be positive or
 negative.
 NOTE! If 0.0 (zero), lies between the startParameter and
 the endParameter of the clothoid, then the curve goes
 through the clothoid's inflection point, and the direction
 of its radius of curvature, given by the second
 derivative vector, changes sides with respect to the
 tangent vector. The term length distance for the</documentation>
 </annotation>
 </element>
 <element name="endParameter" type="double">
 <annotation>
 <documentation>The endParameter is the arc length
 distance from the inflection point that will be the end
 point for this curve segment. This shall be upper limit
 used in the Fresnel integral and is the value of the
 constructive parameter of this curve segment at its
 start point. The startParameter can either be positive
 or negative.</documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CodeListType">
 <annotation>
 <documentation>List of values on a uniform nominal scale.  List of text tokens.
 In a list context a token should not include any spaces, so xsd:Name is used instead of xsd:string.
 If a codeSpace attribute is present, then its value is a reference to
 a Reference System for the value, a dictionary or code list.</documentation>
 </annotation>
 <simpleContent>
 <extension base="gml:NameList">
 <attribute name="codeSpace" type="anyURI" use="optional"/>
 </extension>
 </simpleContent>
 </complexType>
 
 

 
 <complexType name="CodeOrNullListType">
 <annotation>
 <documentation>List of values on a uniform nominal scale.  List of text tokens.
 In a list context a token should not include any spaces, so xsd:Name is used instead of xsd:string.
 A member of the list may be a typed null.
 If a codeSpace attribute is present, then its value is a reference to
 a Reference System for the value, a dictionary or code list.</documentation>
 </annotation>
 <simpleContent>
 <extension base="gml:NameOrNullList">
 <attribute name="codeSpace" type="anyURI" use="optional"/>
 </extension>
 </simpleContent>
 </complexType>
 
 

 
 <complexType name="CodeType">
 <annotation>
 <documentation>Name or code with an (optional) authority.  Text token.
 If the codeSpace attribute is present, then its value should identify a dictionary, thesaurus
 or authority for the term, such as the organisation who assigned the value,
 or the dictionary from which it is taken.
 A text string with an optional codeSpace attribute. </documentation>
 </annotation>
 <simpleContent>
 <extension base="string">
 <attribute name="codeSpace" type="anyURI" use="optional"/>
 </extension>
 </simpleContent>
 </complexType>
 
 

 
 <simpleType name="CompassPointEnumeration">
 <restriction base="string">
 <enumeration value="N"/>
 <enumeration value="NNE"/>
 <enumeration value="NE"/>
 <enumeration value="ENE"/>
 <enumeration value="E"/>
 <enumeration value="ESE"/>
 <enumeration value="SE"/>
 <enumeration value="SSE"/>
 <enumeration value="S"/>
 <enumeration value="SSW"/>
 <enumeration value="SW"/>
 <enumeration value="WSW"/>
 <enumeration value="W"/>
 <enumeration value="WNW"/>
 <enumeration value="NW"/>
 <enumeration value="NNW"/>
 </restriction>
 </simpleType>
 
 

 
 <complexType name="CompositeCurvePropertyType">
 <sequence minOccurs="0">
 <element ref="gml:CompositeCurve"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType name="CompositeCurveType">
 <annotation>
 <documentation>A CompositeCurve is defined by a sequence of (orientable) curves such that the each curve in the sequence terminates at the start point of the subsequent curve in the list.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractCurveType">
 <sequence>
 <element maxOccurs="unbounded" ref="gml:curveMember">
 <annotation>
 <documentation>This element references or contains one curve in the composite curve. The curves are contiguous, the collection of curves is ordered.
 NOTE: This definition allows for a nested structure, i.e. a CompositeCurve may use, for example, another CompositeCurve as a curve member.</documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CompositeSolidPropertyType">
 <sequence minOccurs="0">
 <element ref="gml:CompositeSolid"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType name="CompositeSolidType">
 <annotation>
 <documentation>A composite solid is a geometry type with all the geometric properties of a (primitive) solid.
 Essentially, a composite solid is a collection of solids that join in pairs on common boundary surfaces and which, when considered as a whole, form a single solid.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractSolidType">
 <sequence>
 <element maxOccurs="unbounded" ref="gml:solidMember">
 <annotation>
 <appinfo>
 <sch:pattern name="Check either href or content not both">
 <sch:rule context="gml:solidMember">
 <sch:extends rule="hrefOrContent"/>
 </sch:rule>
 </sch:pattern>
 </appinfo>
 <documentation>This element references or contains one solid in the composite solid. The solids are contiguous.
 NOTE: This definition allows for a nested structure, i.e. a CompositeSolid may use, for example, another CompositeSolid as a member.</documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CompositeSurfacePropertyType">
 <sequence minOccurs="0">
 <element ref="gml:CompositeSurface"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType name="CompositeSurfaceType">
 <annotation>
 <documentation>A CompositeSurface is defined by a set of orientable surfaces. A composite surface is geometry type with all the geometric properties of a (primitive) surface. Essentially, a composite surface is a collection of surfaces that join in pairs on common boundary curves and which, when considered as a whole, form a single surface.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractSurfaceType">
 <sequence>
 <element maxOccurs="unbounded" ref="gml:surfaceMember">
 <annotation>
 <documentation>This element references or contains one surface in the composite surface. The surfaces are contiguous.
 NOTE: This definition allows for a nested structure, i.e. a CompositeSurface may use, for example, another CompositeSurface as a member.</documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CompositeValueType">
 <annotation>
 <documentation>Aggregate value built from other Values using the Composite pattern. It contains zero or an arbitrary number of valueComponent elements, and zero or one valueComponents elements.  It may be used for strongly coupled aggregates (vectors, tensors) or for arbitrary collections of values.</documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractGMLType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="0" ref="gml:valueComponent"/>
 <element minOccurs="0" ref="gml:valueComponents"/>
 </sequence>
 </extension>
 </complexContent>
 </complexType>
 
 

 
 <complexType name="CompoundCRSRefType">
 <annotation>
 <documentation>Association to a compound coordinate reference system, either referencing or containing the definition of that reference system. </documentation>
 </annotation>
 <sequence minOccurs="0">
 <element ref="gml:CompoundCRS"/>
 </sequence>
 <attributeGroup ref="gml:AssociationAttributeGroup"/>
 </complexType>
 
 

 
 <complexType name="CompoundCRSType">
 <annotation>
 <documentation>A coordinate reference system describing the position of points through two or more independent coordinate reference systems. </documentation>
 </annotation>
 <complexContent>
 <extension base="gml:AbstractReferenceSystemType">
 <sequence>
 <element maxOccurs="unbounded" minOccurs="2" ref="gml:includesCRS">
 <annotation>
 <documentation>Ordered sequence of associations to all the component coordinate reference systems included in this compound coordinate reference system. </documentation>
 </annotation>
 </element>
 </sequence>
 </extension>
 </complexContent>
 </complexType>