--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+/******************************************************************************
+ * $Id: gdalvrt.xsd 30648 2015-09-22 15:16:23Z rouault $
+ *
+ * Project: GDAL/OGR
+ * Purpose: XML Schema for GDAL VRT files.
+ * Author: Even Rouault, <even dot rouault at spatialys dot com>
+ *
+ **********************************************************************
+ * Copyright (c) 2015, Even Rouault
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ ****************************************************************************/
+-->
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="1.0">
+ <xs:element name="VRTDataset">
+ <xs:complexType>
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="SRS" type="xs:string"/>
+ <xs:element name="GeoTransform" type="xs:string"/>
+ <xs:element name="GCPList" type="GCPListType"/>
+ <xs:element name="BlockXSize" type="nonNegativeInteger32"/>
+ <xs:element name="BlockYSize" type="nonNegativeInteger32"/>
+ <xs:element name="Metadata" type="MetadataType"/> <!-- may be repeated -->
+ <xs:element name="VRTRasterBand" type="VRTRasterBandType"/> <!-- may be repeated -->
+ <xs:element name="MaskBand" type="MaskBandType"/>
+ <xs:element name="GDALWarpOptions" type="GDALWarpOptionsType"/> <!-- only if subClass="VRTWarpedDataset" -->
+ <xs:element name="PansharpeningOptions" type="PansharpeningOptionsType"/> <!-- only if subClass="VRTPansharpenedDataset" -->
+ </xs:choice>
+ </xs:sequence>
+ <xs:attribute name="subClass" type="xs:string"/>
+ <xs:attribute name="rasterXSize" type="nonNegativeInteger32" use="required"/>
+ <xs:attribute name="rasterYSize" type="nonNegativeInteger32" use="required"/>
+ </xs:complexType>
+ </xs:element>
+
+ <xs:simpleType name="nonNegativeInteger32">
+ <xs:restriction base="xs:nonNegativeInteger">
+ <xs:maxInclusive value="2147483647"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:complexType name="GCPListType">
+ <xs:sequence>
+ <xs:element name="GCP" type="GCPType" minOccurs="0" maxOccurs="unbounded"/>
+ </xs:sequence>
+ <xs:attribute name="Projection" type="xs:string"/>
+ </xs:complexType>
+
+ <xs:complexType name="GCPType">
+ <xs:attribute name="Id" type="xs:string"/>
+ <xs:attribute name="Info" type="xs:string"/>
+ <xs:attribute name="Pixel" type="xs:double" use="required"/>
+ <xs:attribute name="Line" type="xs:double" use="required"/>
+ <xs:attribute name="X" type="xs:double" use="required"/>
+ <xs:attribute name="Y" type="xs:double" use="required"/>
+ <xs:attribute name="Z" type="xs:double"/>
+ <xs:attribute name="GCPZ" type="xs:double"/> <!-- deprecated -->
+ </xs:complexType>
+
+ <xs:complexType name="MetadataType">
+ <xs:sequence>
+ <!--<xs:choice>-->
+ <!--<xs:element name="MDI" type="MDIType" minOccurs="0" maxOccurs="unbounded"/>-->
+ <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
+ <!--</xs:choice>-->
+ </xs:sequence>
+ <xs:attribute name="domain" type="xs:string"/>
+ <xs:attribute name="format" type="xs:string"/>
+ </xs:complexType>
+
+ <xs:complexType name="GDALWarpOptionsType">
+ <xs:sequence>
+ <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="PansharpeningOptionsType">
+ <xs:sequence>
+ <xs:element name="Algorithm" type="xs:string" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="AlgorithmOptions" type="AlgorithmOptionsType" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="Resampling" type="xs:string" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="NumThreads" type="xs:string" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="BitDepth" type="xs:string" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="NoData" type="NoDataOrNoneType" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="SpatialExtentAdjustment" type="xs:string" minOccurs="0" maxOccurs="1"/>
+ <xs:element name="PanchroBand" type="PanchroBandType" minOccurs="1" maxOccurs="1"/>
+ <xs:element name="SpectralBand" type="SpectralBandType" minOccurs="1" maxOccurs="unbounded"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:simpleType name="NoDataOrNoneType">
+ <xs:union memberTypes="xs:double xs:string" />
+ </xs:simpleType>
+
+ <xs:complexType name="PanchroBandType">
+ <xs:sequence>
+ <xs:element name="SourceFilename" type="SourceFilenameType"/>
+ <xs:element name="SourceBand" type="xs:string"/> <!-- should be refined into xs:nonNegativeInteger or mask,xs:nonNegativeInteger -->
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="SpectralBandType">
+ <xs:sequence>
+ <xs:element name="SourceFilename" type="SourceFilenameType"/>
+ <xs:element name="SourceBand" type="xs:string"/> <!-- should be refined into xs:nonNegativeInteger or mask,xs:nonNegativeInteger -->
+ </xs:sequence>
+ <xs:attribute name="dstBand" type="xs:nonNegativeInteger"/>
+ </xs:complexType>
+
+ <xs:complexType name="AlgorithmOptionsType">
+ <xs:sequence>
+ <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="MDIType">
+ <xs:simpleContent>
+ <xs:extension base="xs:string">
+ <xs:attribute name="key" type="xs:string" use="required"/>
+ </xs:extension>
+ </xs:simpleContent>
+ </xs:complexType>
+
+ <xs:complexType name="VRTRasterBandType">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="Description" type="xs:string"/>
+ <xs:element name="UnitType" type="xs:string"/>
+ <xs:element name="Offset" type="xs:double"/>
+ <xs:element name="Scale" type="xs:double"/>
+ <xs:element name="CategoryNames" type="CategoryNamesType"/>
+ <xs:element name="ColorTable" type="ColorTableType"/>
+ <xs:element name="NoDataValue" type="DoubleOrNanType"/>
+ <xs:element name="NodataValue" type="xs:double"/> <!-- typo: deprecated -->
+ <xs:element name="HideNoDataValue" type="ZeroOrOne"/>
+ <xs:element name="Metadata" type="MetadataType"/>
+ <xs:element name="ColorInterp" type="ColorInterpType"/>
+ <xs:element name="Overview" type="OverviewType"/>
+ <xs:element name="MaskBand" type="MaskBandType"/>
+ <xs:element name="Histograms" type="HistogramsType"/>
+
+ <!-- for a VRTSourcedRasterBand. Each element may be repeated -->
+ <xs:element name="SimpleSource" type="SimpleSourceType"/>
+ <xs:element name="ComplexSource" type="ComplexSourceType"/>
+ <xs:element name="AveragedSource" type="SimpleSourceType"/>
+ <xs:element name="KernelFilteredSource" type="KernelFilteredSourceType"/>
+
+ <!-- for a VRTDerivedRasterBand -->
+ <xs:element name="PixelFunctionType" type="xs:string"/>
+ <xs:element name="SourceTransferType" type="DataTypeType"/>
+
+ <!-- for a VRTRawRasterBand -->
+ <xs:element name="SourceFilename" type="SourceFilenameType"/>
+ <xs:element name="ImageOffset" type="xs:integer"/>
+ <xs:element name="PixelOffset" type="xs:integer"/>
+ <xs:element name="LineOffset" type="xs:integer"/>
+ <xs:element name="ByteOrder" type="xs:string"/>
+ </xs:choice>
+ </xs:sequence>
+ <xs:attribute name="dataType" type="DataTypeType"/>
+ <xs:attribute name="band" type="xs:unsignedInt"/>
+ <xs:attribute name="subClass" type="VRTRasterBandSubClassType"/>
+
+ <xs:attribute name="BlockXSize" type="xs:unsignedInt"/> <!-- ignored -->
+ <xs:attribute name="BlockYSize" type="xs:unsignedInt"/> <!-- ignored -->
+ </xs:complexType>
+
+ <xs:simpleType name="ZeroOrOne">
+ <xs:restriction base="xs:integer">
+ <xs:enumeration value="0"/>
+ <xs:enumeration value="1"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:simpleType name="VRTRasterBandSubClassType">
+ <xs:restriction base="xs:string">
+ <xs:enumeration value="VRTWarpedRasterBand"/>
+ <xs:enumeration value="VRTDerivedRasterBand"/>
+ <xs:enumeration value="VRTRawRasterBand"/>
+ <xs:enumeration value="VRTPansharpenedRasterBand"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:complexType name="MaskBandType">
+ <xs:sequence minOccurs="1" maxOccurs="1">
+ <xs:element name="VRTRasterBand" type="VRTRasterBandType"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="HistogramsType">
+ <xs:sequence minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="HistItem" type="HistItemType"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="HistItemType">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="HistMin" type="xs:double"/>
+ <xs:element name="HistMax" type="xs:double"/>
+ <xs:element name="BucketCount" type="xs:integer"/>
+ <xs:element name="IncludeOutOfRange" type="ZeroOrOne"/>
+ <xs:element name="Approximate" type="ZeroOrOne"/>
+ <xs:element name="HistCounts" type="xs:string"/>
+ </xs:choice>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="CategoryNamesType">
+ <xs:sequence minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="Category" type="xs:string"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="ColorTableType">
+ <xs:sequence minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="Entry" type="ColorTableEntryType"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="OverviewType">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="SourceFilename" type="SourceFilenameType"/>
+ <xs:element name="SourceBand" type="xs:string"/> <!-- should be refined into xs:nonNegativeInteger or mask,xs:nonNegativeInteger -->
+ </xs:choice>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="ColorTableEntryType">
+ <xs:attribute name="c1" type="xs:unsignedInt" use="required"/>
+ <xs:attribute name="c2" type="xs:unsignedInt" use="required" />
+ <xs:attribute name="c3" type="xs:unsignedInt" use="required" />
+ <xs:attribute name="c4" type="xs:unsignedInt" />
+ </xs:complexType>
+
+ <xs:simpleType name="DataTypeType">
+ <xs:restriction base="xs:string">
+ <xs:enumeration value="Byte"/>
+ <xs:enumeration value="UInt16"/>
+ <xs:enumeration value="Int16"/>
+ <xs:enumeration value="UInt32"/>
+ <xs:enumeration value="Int32"/>
+ <xs:enumeration value="Float32"/>
+ <xs:enumeration value="Float64"/>
+ <xs:enumeration value="CInt16"/>
+ <xs:enumeration value="CInt32"/>
+ <xs:enumeration value="CFloat32"/>
+ <xs:enumeration value="CFloat64"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:simpleType name="ColorInterpType">
+ <xs:restriction base="xs:string">
+ <xs:enumeration value="Gray"/>
+ <xs:enumeration value="Palette"/>
+ <xs:enumeration value="Red"/>
+ <xs:enumeration value="Green"/>
+ <xs:enumeration value="Blue"/>
+ <xs:enumeration value="Alpha"/>
+ <xs:enumeration value="Hue"/>
+ <xs:enumeration value="Saturation"/>
+ <xs:enumeration value="Lightness"/>
+ <xs:enumeration value="Cyan"/>
+ <xs:enumeration value="Magenta"/>
+ <xs:enumeration value="Yellow"/>
+ <xs:enumeration value="Black"/>
+ <xs:enumeration value="YCbCr_Y"/>
+ <xs:enumeration value="YCbCr_Cb"/>
+ <xs:enumeration value="YCbCr_Cr"/>
+ <xs:enumeration value="Undefined"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:group name="SimpleSourceElementsGroup">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:element name="SourceFilename" type="SourceFilenameType"/>
+ <xs:element name="OpenOptions" type="OpenOptionsType"/>
+ <xs:element name="SourceBand" type="xs:string"/> <!-- should be refined into xs:nonNegativeInteger or mask,xs:nonNegativeInteger -->
+ <xs:element name="SourceProperties" type="SourcePropertiesType"/>
+ <xs:element name="SrcRect" type="RectType"/>
+ <xs:element name="DstRect" type="RectType"/>
+ </xs:choice>
+ </xs:sequence>
+ </xs:group>
+
+ <xs:complexType name="OpenOptionsType">
+ <xs:sequence>
+ <xs:element name="OOI" type="OOIType" minOccurs="0" maxOccurs="unbounded"/>
+ </xs:sequence>
+ </xs:complexType>
+
+ <xs:complexType name="OOIType">
+ <xs:simpleContent>
+ <xs:extension base="xs:string">
+ <xs:attribute name="key" type="xs:string" use="required"/>
+ </xs:extension>
+ </xs:simpleContent>
+ </xs:complexType>
+
+ <xs:complexType name="SimpleSourceType">
+ <xs:group ref="SimpleSourceElementsGroup"/>
+ <xs:attribute name="resampling" type="xs:string"/>
+ </xs:complexType>
+
+ <xs:group name="ComplexSourceElementsGroup">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:group ref="SimpleSourceElementsGroup"/>
+ <xs:element name="ScaleOffset" type="xs:double"/>
+ <xs:element name="ScaleRatio" type="xs:double"/>
+ <xs:element name="ColorTableComponent" type="xs:nonNegativeInteger"/>
+ <xs:element name="Exponent" type="xs:double"/>
+ <xs:element name="SrcMin" type="xs:double"/>
+ <xs:element name="SrcMax" type="xs:double"/>
+ <xs:element name="DstMin" type="xs:double"/>
+ <xs:element name="DstMax" type="xs:double"/>
+ <xs:element name="NODATA" type="DoubleOrNanType"/>
+ <xs:element name="LUT" type="xs:string"/>
+ </xs:choice>
+ </xs:sequence>
+ </xs:group>
+
+ <xs:complexType name="ComplexSourceType">
+ <xs:group ref="ComplexSourceElementsGroup"/>
+ <xs:attribute name="resampling" type="xs:string"/>
+ </xs:complexType>
+
+ <xs:complexType name="KernelFilteredSourceType">
+ <xs:sequence>
+ <xs:choice minOccurs="0" maxOccurs="unbounded">
+ <xs:group ref="ComplexSourceElementsGroup"/>
+ <xs:element name="Kernel" type="KernelType"/>
+ </xs:choice>
+ </xs:sequence>
+ <xs:attribute name="resampling" type="xs:string"/>
+ </xs:complexType>
+
+ <xs:complexType name="KernelType">
+ <xs:all>
+ <xs:element name="Size" type="xs:nonNegativeInteger"/>
+ <xs:element name="Coefs" type="xs:string"/>
+ </xs:all>
+
+ <xs:attribute name="normalized" type="ZeroOrOne"/>
+ </xs:complexType>
+
+ <xs:simpleType name="DoubleOrNanType">
+ <xs:union memberTypes="xs:double NANType" />
+ </xs:simpleType>
+
+ <xs:simpleType name="NANType">
+ <xs:restriction base="xs:string">
+ <xs:enumeration value="nan"/>
+ <xs:enumeration value="NAN"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:complexType name="SourceFilenameType">
+ <xs:simpleContent>
+ <xs:extension base="xs:string">
+ <xs:attribute name="relativeToVRT" type="ZeroOrOne" />
+ <xs:attribute name="relativetoVRT" type="ZeroOrOne" /> <!-- typo: deprecated -->
+ <xs:attribute name="shared" type="OGRBooleanType"/>
+ </xs:extension>
+ </xs:simpleContent>
+ </xs:complexType>
+
+ <xs:simpleType name="OGRBooleanType">
+ <xs:restriction base="xs:string">
+ <xs:enumeration value="1"/>
+ <xs:enumeration value="0"/>
+ <xs:enumeration value="ON"/>
+ <xs:enumeration value="OFF"/>
+ <xs:enumeration value="on"/>
+ <xs:enumeration value="off"/>
+ <xs:enumeration value="YES"/>
+ <xs:enumeration value="NO"/>
+ <xs:enumeration value="yes"/>
+ <xs:enumeration value="no"/>
+ <xs:enumeration value="TRUE"/>
+ <xs:enumeration value="FALSE"/>
+ <xs:enumeration value="true"/>
+ <xs:enumeration value="false"/>
+ <xs:enumeration value="True"/>
+ <xs:enumeration value="False"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+ <xs:complexType name="SourcePropertiesType">
+ <xs:attribute name="RasterXSize" type="nonNegativeInteger32" />
+ <xs:attribute name="RasterYSize" type="nonNegativeInteger32" />
+ <xs:attribute name="DataType" type="DataTypeType" />
+ <xs:attribute name="BlockXSize" type="nonNegativeInteger32" />
+ <xs:attribute name="BlockYSize" type="nonNegativeInteger32" />
+ </xs:complexType>
+
+ <xs:complexType name="RectType">
+ <xs:attribute name="xOff" type="xs:double" />
+ <xs:attribute name="yOff" type="xs:double" />
+ <xs:attribute name="xSize" type="nonNegativeDouble" />
+ <xs:attribute name="ySize" type="nonNegativeDouble" />
+ </xs:complexType>
+
+ <xs:simpleType name="nonNegativeDouble">
+ <xs:restriction base="xs:double">
+ <xs:minExclusive value="0.0"/>
+ </xs:restriction>
+ </xs:simpleType>
+
+</xs:schema>
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