coverage.xsd Part of GML 3.2.1 Application schema for WCS 2.0. Last updated: 2010-jan-11 Copyright (c) 2010 Open Geospatial Consortium, Inc. All Rights Reserved. To obtain additional rights of use, visit http://www.opengeospatial.org/legal/. Extends gml:AbstractCoverage as needed for WCS 2.0, by adding a rangeStructure property. The gml:coverageFunction property is included here, because it is included in both discrete and continuous coverages. This permits coverages in the gmlwcs:AbstractCoverage substitutionGroup to be used for either discrete and continuous coverages, in preparation for expected future elimination of this distinction. A GridCoverage is a discrete point coverage in which the domain is a geometric grid of points. Note that this is the same as the MultiPointCoverage except that we have a gml:Grid to describe the domain. This simple grid coverage is not geometrically referenced to the earth, and hence no geometric positions are assignable to the points in the grid. Such geometric positioning is introduced in the RectifiedGridCoverage. Redefinition needed in order to benefit from the changes to the abstract ancestor AbstractCoverage. Since this GridCoverage uses the gmlwcs:CoverageType, it can be used for both discrete and continuous coverages. A RectifiedGridCoverage is a discrete point coverage based on a rectified grid. It is similar to the grid coverage except that the points of the grid are geometrically referenced. The rectified grid coverage has a domain that is a gml:RectifiedGrid geometry. Redefinition needed in order to benefit from the changes to the abstract ancestor AbstractCoverage. Since this RectifiedGridCoverage uses the gmlwcs:CoverageType, it can be used for both discrete and continuous coverages. A ReferenceableGridCoverage is an implementation of ISO 19123 CV_DiscreteGridPointCoverage for a CV_ReferenceableGrid domain. It is a coverage based on a referenceable grid and has a domain geometry that is in the substitution group of AbstractReferenceableGrid. This equivalent of this element is being added to GML 3.2.1 by approved Change Request 07-112r3. Since this ReferenceableGridCoverage uses the gmlwcs:CoverageType, it can be used for both discrete and continuous coverages. The rangeStructure property includes or references the RangeStructure, introduced for coverage definitions used by WCS 2.0. The RangeStructure element describes the structure of a coverage's range, introduced for coverage definitions used by WCS 2.0. The RangeField property includes or references one RangeField element. The RangeField element describes the structure of one Field of a coverage's range. The gml:name should be used for the unique identifier of this RangeField. Identifier of the Unit of Measure applicable to values of this RangeField. This element will contain an URN that identifies the datatype of this field. The default gml:Dictionary of allowed values of this dataType is wcsDataTypeIdentifiers.xml. List of the specific values of this RangeField that are used to designate non-valid values.