A GeoRaster Metadata XML Schema

This appendix provides the XML schema definition that is used for GeoRaster metadata. The following is the definition of the GeoRaster metadata XML schema. (You can also see this definition by querying the SDO_GEOR_XMLSCHEMA_TABLE table, which is described in Section 2.5.)

<?xml version="1.0" encoding="UTF-8"?>
<!-- Oracle GeoRaster Metadata Schema -->
<xsd:schema targetNamespace="http://xmlns.oracle.com/spatial/georaster" 
   xmlns="http://xmlns.oracle.com/spatial/georaster" 
   xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
    elementFormDefault="qualified" version="0.0">
<xsd:annotation>
<xsd:documentation>======================================== 
   This is the XML schema defining the metadata of Oracle GeoRaster object type.
   It consists of two parts: data type definitions and its element content.
    Part 1: Data Types 
       Part 1.1: Data Types for Object Info 
       Part 1.2: Data Types for Raster Info 
       Part 1.3: Data Types for Spatial-Temporal-Band Reference Systems 
       Part 1.3.1: Data Types for GeoRaster Spatial Reference System
       Part 1.3.2: Data Types for GeoRaster Temporal Reference System
       Part 1.3.3: Data Types for GeoRaster Band Reference System
       Part 1.4: Data Types for Layer Metadata 
    Part 2: Metadata Elements / Content Structure of Oracle GeoRaster Object 
                     =====================================
</xsd:documentation>
</xsd:annotation>
<xsd:annotation>
<xsd:documentation> ==========================
                          Part 1:      Data Types 
         ======================================
 </xsd:documentation>
 </xsd:annotation>
 <xsd:annotation>
 <xsd:documentation> ==============================
          Part 1.1: Data Types for Object Info
          ==============================
 </xsd:documentation>
 </xsd:annotation>
 <xsd:complexType name="objectDescriptionType">
   <xsd:sequence>
      <xsd:element name="rasterType" type="xsd:integer"/>
      <xsd:element name="ID" type="xsd:string" minOccurs="0"/>
      <xsd:element name="description" type="xsd:string" minOccurs="0" 
            maxOccurs="unbounded"/>
      <xsd:element name="majorVersion" type="xsd:string" minOccurs="0"/>
      <xsd:element name="minorVersion" type="xsd:string" minOccurs="0"/>
      <xsd:element name="isBlank" type="xsd:boolean" default="false"/>
      <xsd:element name="blankCellValue" type="xsd:double" minOccurs="0"/>
      <xsd:element name="defaultRed" type="xsd:positiveInteger" minOccurs="0"/>
      <xsd:element name="defaultGreen" type="xsd:positiveInteger" 
              minOccurs="0"/>
      <xsd:element name="defaultBlue" type="xsd:positiveInteger" minOccurs="0"/>
      <xsd:any minOccurs="0" maxOccurs="unbounded"/>
    </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
    <xsd:documentation> ==============================
            Part 1.2: Data Types for Raster Info 
            ==============================
    </xsd:documentation>
   </xsd:annotation>
   <xsd:simpleType name="cellRepresentationType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="POINT"/>
         <xsd:enumeration value="SEGMENT"/>
         <xsd:enumeration value="TRIANGLE"/>
         <xsd:enumeration value="SQUARE"/>
         <xsd:enumeration value="RECTANGLE"/>
         <xsd:enumeration value="CUBE"/>
         <xsd:enumeration value="TETRAHEDRON"/>
         <xsd:enumeration value="HEXAHEDRON"/>
         <xsd:enumeration value="UNDEFINED"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="cellDepthType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="1BIT"/>
         <xsd:enumeration value="2BIT"/>
         <xsd:enumeration value="4BIT"/>
         <xsd:enumeration value="8BIT_U"/>
         <xsd:enumeration value="8BIT_S"/>
         <xsd:enumeration value="16BIT_U"/>
         <xsd:enumeration value="16BIT_S"/>
         <xsd:enumeration value="32BIT_U"/>
         <xsd:enumeration value="32BIT_S"/>
         <xsd:enumeration value="32BIT_REAL"/>
         <xsd:enumeration value="64BIT_REAL"/>
         <xsd:enumeration value="64BIT_COMPLEX"/>
         <xsd:enumeration value="128BIT_COMPLEX"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="supportedDimensionNumber">
      <xsd:restriction base="xsd:integer">
         <xsd:minInclusive value="2"/>
         <xsd:maxInclusive value="3"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="cellDimensionType">
      <xsd:annotation>
         <xsd:documentation> 
         The "Band" dimension can be treated as any other semantic dimension
         or any "Layer" if not remote sensing imagery or photographs.
         </xsd:documentation>
      </xsd:annotation>
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="ROW"/>
         <xsd:enumeration value="COLUMN"/>
         <xsd:enumeration value="VERTICAL"/>
         <xsd:enumeration value="BAND"/>
         <xsd:enumeration value="TEMPORAL"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="cellDimensionSizeType">
      <xsd:sequence>
         <xsd:element name="size" type="xsd:positiveInteger" 
             default="1"/>
      </xsd:sequence>
      <xsd:attribute name="type" type="cellDimensionType" 
             use="required"/>
   </xsd:complexType>
   <xsd:complexType name="cellCoordinateType">
      <xsd:sequence>
         <xsd:element name="row" type="xsd:integer" default="0"/>
         <xsd:element name="column" type="xsd:integer" default="0"/>
         <xsd:element name="vertical" type="xsd:integer" 
                  minOccurs="0"/>
         <xsd:element name="band" type="xsd:integer" 
                   minOccurs="0"/>
         <xsd:element name="temporal" type="xsd:integer" 
                  minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:simpleType name="compressionType">
       <xsd:restriction base="xsd:string">
           <xsd:enumeration value="NONE"/>
           <xsd:enumeration value="RLE"/>
           <xsd:enumeration value="JPEG-B"/>
           <xsd:enumeration value="JPEG-F"/>
           <xsd:enumeration value="DEFLATE"/>
           <xsd:enumeration value="LT-MG2"/>
           <xsd:enumeration value="LT-MG3"/>
           <xsd:enumeration value="LT-JP2"/>
       </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="compressionQuality">
       <xsd:restriction base="xsd:integer">
           <xsd:minInclusive value="0"/>
           <xsd:maxInclusive value="100"/>
       </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="compressionDescriptionType">
       <xsd:sequence>
           <xsd:element name="type" type="compressionType"
             default="NONE"/>
           <xsd:element name="quality" type="compressionQuality"
              minOccurs="0"/>
           <xsd:any minOccurs="0" maxOccurs="unbounded"/>
       </xsd:sequence>
   </xsd:complexType>
   <xsd:simpleType name="blockingType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="NONE"/>
         <xsd:enumeration value="REGULAR"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="blockingDescriptionType">
      <xsd:sequence>
         <xsd:element name="type" type="blockingType" 
                  default="NONE"/>
         <xsd:element name="totalRowBlocks" type="xsd:positiveInteger" 
                  default="1"/>
         <xsd:element name="totalColumnBlocks" type="xsd:positiveInteger" 
                  default="1"/>
         <xsd:element name="totalBandBlocks" type="xsd:positiveInteger" 
                  default="1" minOccurs="0"/>
         <xsd:element name="rowBlockSize" type="xsd:positiveInteger"/>
         <xsd:element name="columnBlockSize" type="xsd:positiveInteger"/>
         <xsd:element name="bandBlockSize" type="xsd:positiveInteger" 
                   minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:simpleType name="cellInterleavingType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="BSQ"/>
         <xsd:enumeration value="BIL"/>
         <xsd:enumeration value="BIP"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="pyramidType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="NONE"/>
         <xsd:enumeration value="DECREASE"/>
         <xsd:enumeration value="INCREASE"/>
         <xsd:enumeration value="BIDIRECTION"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:simpleType name="resamplingType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="NN"/>
         <xsd:enumeration value="BILINEAR"/>
         <xsd:enumeration value="CUBIC"/>
         <xsd:enumeration value="AVERAGE4"/>
         <xsd:enumeration value="AVERAGE16"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="pyramidDescriptionType">
      <xsd:sequence>
         <xsd:element name="type" type="pyramidType" 
                   default="NONE"/>
         <xsd:element name="resampling" type="resamplingType" 
                  default="NN" minOccurs="0"/>
         <xsd:element name="maxLevel" type="xsd:nonNegativeInteger"
                  default="0" minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="rasterDescriptionType">
      <xsd:sequence>
         <xsd:element name="cellRepresentation" 
                  type="cellRepresentationType" default="UNDEFINED"/>
         <xsd:element name="cellDepth" type="cellDepthType" 
                  default="8BIT_U"/>
         <xsd:element name="NODATA" type="xsd:double" 
                   minOccurs="0"/>
         <xsd:element name="totalDimensions" 
                  type="supportedDimensionNumber" default="2"/>
         <xsd:element name="dimensionSize" 
                  type="cellDimensionSizeType" maxOccurs="5"/>
         <xsd:element name="ULTCoordinate" type="cellCoordinateType"/>
         <xsd:element name="blocking" type="blockingDescriptionType"/>
         <xsd:element name="interleaving" type="cellInterleavingType" 
                  default="BSQ"/>
         <xsd:element name="pyramid" type="pyramidDescriptionType"/>
         <xsd:element name="compression" type="compressionDescriptionType"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
      <xsd:documentation>====================
     Part 1.3: Data Types for Spatial-Temporal-Band Reference Systems
       ===============================
             </xsd:documentation>
   </xsd:annotation>
   <xsd:annotation>
      <xsd:documentation>====================
     Part 1.3.1: Data Types for GeoRaster Spatial Reference System
    
     Spatial extent (footprint) is recorded as an attribute of the GeoRaster
     object. Its type is SDO_GEOMETRY, so it is not included in the metadata.
     The cell space coordinates are named as (row, column, vertical).
     The model space coordinates are named as (x, y, z).
     Spatial unit information is stored in the WKT of the specified SRID.
       ===============================
             </xsd:documentation>
   </xsd:annotation>
   <xsd:simpleType name="modelDimensionType">
      <xsd:annotation>
         <xsd:documentation> 
  The following "S" means "Spectral" for remote sensing imagery.
  Any of X, Y and Z can be horizontal or vertical or any other spatial direction
  depending on the user interpretation in "modelDimensionDescription".
         </xsd:documentation>
      </xsd:annotation>
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="X"/>
         <xsd:enumeration value="Y"/>
         <xsd:enumeration value="Z"/>
         <xsd:enumeration value="T"/>
         <xsd:enumeration value="S"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="resolutionType">
      <xsd:sequence>
         <xsd:element name="resolution" type="xsd:double" 
                 default="1"/>
      </xsd:sequence>
      <xsd:attribute name="dimensionType" 
               type="modelDimensionType" use="required"/>
   </xsd:complexType>
   <xsd:simpleType name="doubleNumberListType">
      <xsd:list itemType="xsd:double"/>
   </xsd:simpleType>
   <xsd:complexType name="polynomialType">
      <xsd:sequence>
         <xsd:element name="polynomialCoefficients" 
                  type="doubleNumberListType"/>
      </xsd:sequence>
      <xsd:attribute name="pType" type="xsd:nonNegativeInteger" 
               use="optional" default="1"/>
      <xsd:attribute name="nVars" type="xsd:nonNegativeInteger" 
               use="required"/>
      <xsd:attribute name="order" type="xsd:nonNegativeInteger" 
               use="required"/>
      <xsd:attribute name="nCoefficients" type="xsd:nonNegativeInteger"
               use="required"/>
      <xsd:anyAttribute/>
   </xsd:complexType>
   <xsd:complexType name="rationalPolynomialType">
      <xsd:annotation>
         <xsd:documentation>
         row       =   pPolynomial(x, y, z) / qPolynomial(x, y, z)
         column =   rPolynomial(x, y, z) / sPolynomial(x, y, z)
               </xsd:documentation>
      </xsd:annotation>
      <xsd:sequence>
         <xsd:element name="pPolynomial" type="polynomialType"/>
         <xsd:element name="qPolynomial" type="polynomialType"/>
         <xsd:element name="rPolynomial" type="polynomialType"/>
         <xsd:element name="sPolynomial" type="polynomialType"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="rowOff" type="xsd:double" use="required"/>
      <xsd:attribute name="columnOff" type="xsd:double" use="required"/>
      <xsd:attribute name="xOff" type="xsd:double" use="required"/>
      <xsd:attribute name="yOff" type="xsd:double" use="required"/>
      <xsd:attribute name="zOff" type="xsd:double" use="required"/>
      <xsd:attribute name="rowScale" type="xsd:double" use="required"/>
      <xsd:attribute name="columnScale" type="xsd:double" use="required"/>
      <xsd:attribute name="xScale" type="xsd:double" use="required"/>
      <xsd:attribute name="yScale" type="xsd:double" use="required"/>
      <xsd:attribute name="zScale" type="xsd:double" use="required"/>
      <xsd:attribute name="rowRMS" type="xsd:double" use="optional"/>
      <xsd:attribute name="columnRMS" type="xsd:double" use="optional"/>
      <xsd:attribute name="totalRMS" type="xsd:double" use="optional"/>
      <xsd:anyAttribute/>
   </xsd:complexType>
   <xsd:simpleType name="rasterSpatialReferenceModelType">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="RigorousModel"/>
         <xsd:enumeration value="StoredFunction"/>
         <xsd:enumeration value="FunctionalFitting"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="rasterSpatialReferenceSystemType">
      <xsd:sequence>
         <xsd:element name="isReferenced" type="xsd:boolean" default="false"/>
         <xsd:element name="isRectified" type="xsd:boolean" minOccurs="0"/>
         <xsd:element name="isOrthoRectified" type="xsd:boolean" minOccurs="0"/>
         <xsd:element name="description" type="xsd:string" minOccurs="0"/>
         <xsd:element name="SRID" type="xsd:nonNegativeInteger" default="0"/>
         <xsd:element name="verticalSRID" type="xsd:integer" minOccurs="0"/>
         <xsd:element name="modelDimensionDescription" type="xsd:string" minOccurs="0"/>
         <xsd:element name="spatialResolution" type="resolutionType" minOccurs="0" maxOccurs="3"/>
         <xsd:element name="spatialTolerance" type="xsd:double" minOccurs="0"/>
         <xsd:element name="modelCoordinateLocation" minOccurs="0">
            <xsd:simpleType>
               <xsd:restriction base="xsd:string">
                  <xsd:enumeration value="CENTER"/>
                  <xsd:enumeration value="UPPERLEFT"/>
               </xsd:restriction>
            </xsd:simpleType>
         </xsd:element>
         <xsd:element name="modelType" type="rasterSpatialReferenceModelType" minOccurs="0" maxOccurs="3"/>
         <xsd:element name="polynomialModel" type="rationalPolynomialType" minOccurs="0"/>
         <xsd:element name="gcpTableName" type="xsd:string" minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
      <xsd:documentation> ==========
      Part 1.3.2: Data Types for GeoRaster Temporal Reference System
 
      The TRS will be modeled by formulas in the future.
                                         =======================
      </xsd:documentation>
   </xsd:annotation>
   <xsd:complexType name="rasterTemporalReferenceSystemType">
      <xsd:sequence>
         <xsd:element name="isReferenced" type="xsd:boolean" default="false"/>
         <xsd:element name="description" type="xsd:string" minOccurs="0"/>
         <xsd:element name="beginDateTime" type="xsd:dateTime" minOccurs="0"/>
         <xsd:element name="endDateTime" type="xsd:dateTime" minOccurs="0"/>
         <xsd:element name="temporalResolutionDescription" type="xsd:string" 
                 minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
      <xsd:documentation> ==================
       Part 1.3.3: Data Types for GeoRaster Band Reference System 
       For multispectral remote sensing images, each band is optionally 
       described in the layerDescriptionType.
       The BRS is modeled by formulas for hyperspectral imagery
       (based on number of spectral segments, min and max wavelength,
       and number of bands for each segment).
       Detailed radiometric information will be added in the future.
       =========================
       </xsd:documentation>
   </xsd:annotation>
   <xsd:simpleType name="wavelengthUnit">
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="METER"/>
         <xsd:enumeration value="MILLIMETER"/>
         <xsd:enumeration value="MICROMETER"/>
         <xsd:enumeration value="NANOMETER"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="extentType">
      <xsd:sequence>
         <xsd:element name="min" type="xsd:double"/>
         <xsd:element name="max" type="xsd:double"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="segmentationDataType">
      <xsd:sequence>
         <xsd:element name="totalSegNumber" type="xsd:positiveInteger" 
                 default="1"/>
         <xsd:element name="firstSegNumber" type="xsd:integer" 
                 default="1"/>
         <xsd:element name="extent" type="extentType"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="bandReferenceType">
      <xsd:sequence>
         <xsd:element name="bands" type="segmentationDataType" 
                  minOccurs="0" maxOccurs="unbounded"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="rasterBandReferenceSystemType">
      <xsd:sequence>
         <xsd:element name="isReferenced" type="xsd:boolean" 
                  default="false"/>
         <xsd:element name="description" type="xsd:string" 
                  minOccurs="0"/>
         <xsd:element name="radiometricResolutionDescription" 
                   type="xsd:string" minOccurs="0"/>
         <xsd:element name="spectralUnit" type="wavelengthUnit" 
                  default="MICROMETER"/>
         <xsd:element name="spectralTolerance" type="xsd:double" 
                  minOccurs="0"/>
         <xsd:element name="spectralResolutionDescription" 
                  type="xsd:string" minOccurs="0"/>
         <xsd:element name="minSpectralResolution" 
                  type="resolutionType" minOccurs="0"/>
         <xsd:element name="spectralExtent" type="extentType"/>
         <xsd:element name="bandReference" 
                  type="bandReferenceType" minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
      <xsd:documentation> ===================
       Part 1.4: Data Types for Layer Metadata 
 
For each sublayer the layerNumber is a positive integer; that is, layers are
logically numbered from 1 to n if the size of the specified layerDimension is n.
The layerDimensionOrdinate of each sublayer must be in the range of the 
dimension and must be in the order of band ordinates.
For objectLayer, the layerNumber should be 0 but its layerDimensionOrdinate 
is not used.
=======================
    </xsd:documentation>
   </xsd:annotation>
   <xsd:complexType name="NODATAType">
     <xsd:sequence>
       <xsd:element name="value" type="xsd:double" minOccurs="0" maxOccurs="unbounded"/>
       <xsd:element name="range" type="extentType" minOccurs="0" maxOccurs="unbounded"/>
       <xsd:element name="mask" type="xsd:boolean" minOccurs="0"/>
       <xsd:any minOccurs="0" maxOccurs="unbounded"/>
     </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="scalingFunctionType">
      <xsd:annotation>
         <xsd:documentation> 
          value = (a0 + a1 * cellValue)  /  (b0 + b1 * cellValue)
         </xsd:documentation>
      </xsd:annotation>
      <xsd:sequence>
         <xsd:element name="a0" type="xsd:double" default="1"/>
         <xsd:element name="a1" type="xsd:double" default="0"/>
         <xsd:element name="b0" type="xsd:double" default="1"/>
         <xsd:element name="b1" type="xsd:double" default="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:simpleType name="binType">
      <xsd:annotation>
      <xsd:documentation> 
LINEAR bin function:
binNumber = numbins * (cellValue - min) / (max - min) + firstBinNumber
if (binNumber less than 0) binNumber =  firstBinNumber
if (binNumber greater than or equal to numbins) binNumber = numbins +
     firstBinNumber - 1
LOGARITHM bin function:
binNumber = numbins * (ln (1.0 + ((cellValue - min)/(max - min)))/ ln (2.0)) 
     + firstBinNumber
if (binNumber less than 0) binNumber =  firstBinNumber
if (binNumber greater than or equal to numbins) binNumber = numbins +
      firstBinNumber - 1
EXPLICIT bin function means explicit (or direct) value (or value range) 
for each bin, and it will be stored in a table.
      </xsd:documentation>
      </xsd:annotation>
      <xsd:restriction base="xsd:string">
         <xsd:enumeration value="LINEAR"/>
         <xsd:enumeration value="LOGARITHM"/>
         <xsd:enumeration value="EXPLICIT"/>
      </xsd:restriction>
   </xsd:simpleType>
   <xsd:complexType name="binFunctionType">
      <xsd:annotation>
         <xsd:documentation>
The MAX and MIN in the statistics data set will be used if they are not provided
here. binTableName is used by EXPLICIT type only.
          </xsd:documentation>
      </xsd:annotation>
      <xsd:sequence>
         <xsd:choice>
            <xsd:element name="binFunctionData" type="segmentationDataType"/>
            <xsd:element name="binTableName" type="xsd:string"/>
            <xsd:any minOccurs="0" maxOccurs="unbounded"/>
         </xsd:choice>
      </xsd:sequence>
      <xsd:attribute name="type" type="binType" use="required"/>
   </xsd:complexType>
   <xsd:complexType name="rectangularWindowType">
      <xsd:sequence>
         <xsd:element name="origin" type="cellCoordinateType"/>
         <xsd:element name="rowHeight" type="xsd:positiveInteger"/>
         <xsd:element name="columnWidth" type="xsd:positiveInteger"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="cellCountType">
      <xsd:attribute name="value" type="xsd:double" use="required"/>
      <xsd:attribute name="count" type="xsd:nonNegativeInteger" 
               use="required"/>
      <xsd:anyAttribute/>
   </xsd:complexType>
   <xsd:complexType name="rasterCountType">
      <xsd:sequence>
         <xsd:element name="cell" type="cellCountType" 
                  maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="histogramType">
      <xsd:sequence>
         <xsd:choice>
            <xsd:element name="counts" type="rasterCountType"/>
            <xsd:element name="tableName" type="xsd:string"/>
         </xsd:choice>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="statisticDatasetType">
      <xsd:sequence>
         <xsd:element name="samplingFactor" type="xsd:positiveInteger" 
                 default="1"/>
         <xsd:element name="samplingWindow" 
                  type="rectangularWindowType" minOccurs="0"/>
         <xsd:element name="MIN" type="xsd:double"/>
         <xsd:element name="MAX" type="xsd:double"/>
         <xsd:element name="MEAN" type="xsd:double"/>
         <xsd:element name="MEDIAN" type="xsd:double"/>
         <xsd:element name="MODEVALUE" type="xsd:double"/>
         <xsd:element name="STD" type="xsd:double"/>
         <xsd:element name="histogram" type="histogramType" 
                  minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="cellGrayType">
      <xsd:attribute name="value" type="xsd:double" use="required"/>
      <xsd:attribute name="gray" type="xsd:integer" use="required"/>
      <xsd:anyAttribute/>
   </xsd:complexType>
   <xsd:complexType name="rasterGrayType">
      <xsd:sequence>
         <xsd:element name="cell" type="cellGrayType" 
                  maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="grayScaleType">
      <xsd:sequence>
         <xsd:choice>
            <xsd:element name="grays" type="rasterGrayType"/>
            <xsd:element name="tableName" type="xsd:string"/>
         </xsd:choice>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="cellPseudoColorType">
      <xsd:attribute name="value" type="xsd:double" use="required"/>
      <xsd:attribute name="red" type="xsd:integer" use="required"/>
      <xsd:attribute name="green" type="xsd:integer" use="required"/>
      <xsd:attribute name="blue" type="xsd:integer" use="required"/>
      <xsd:attribute name="alpha" type="xsd:double" use="optional"/>
      <xsd:anyAttribute/>
   </xsd:complexType>
   <xsd:complexType name="rasterPseudoColorType">
      <xsd:sequence>
         <xsd:element name="cell" type="cellPseudoColorType" 
                  maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="colorMapType">
      <xsd:sequence>
         <xsd:choice>
            <xsd:element name="colors" type="rasterPseudoColorType"/>
            <xsd:element name="tableName" type="xsd:string"/>
         </xsd:choice>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="layerType">
      <xsd:sequence>
         <xsd:element name="layerNumber" type="xsd:nonNegativeInteger"/>
         <xsd:element name="layerDimensionOrdinate" type="xsd:integer"/>
         <xsd:element name="layerID" type="xsd:string"/>
         <xsd:element name="description" type="xsd:string" minOccurs="0" 
                 maxOccurs="unbounded"/>
         <xsd:element name="bitmapMask" type="xsd:boolean" minOccurs="0" default="false"/>
         <xsd:element name="NODATA" type="NODATAType" minOccurs="0"/>
         <xsd:element name="scalingFunction" type="scalingFunctionType" 
                 minOccurs="0"/>
         <xsd:element name="binFunction" type="binFunctionType" 
                  minOccurs="0"/>
         <xsd:element name="statisticDataset" 
                  type="statisticDatasetType" minOccurs="0"/>
         <xsd:element name="grayScale" type="grayScaleType" minOccurs="0"/>
         <xsd:element name="colorMap" type="colorMapType" minOccurs="0"/>
         <xsd:element name="vatTableName" type="xsd:string" minOccurs="0"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="layerDescriptionType">
      <xsd:sequence>
         <xsd:element name="layerDimension" 
                  type="cellDimensionType" default="BAND"/>
         <xsd:element name="objectLayer" type="layerType" minOccurs="0"/>
         <xsd:element name="subLayer" type="layerType" 
                  minOccurs="0" maxOccurs="unbounded"/>
         <xsd:any minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
   </xsd:complexType>
   <xsd:annotation>
      <xsd:documentation> =================
Part 2: Metadata Elements / Content Structure of Oracle GeoRaster Object 
==============================
    </xsd:documentation>
   </xsd:annotation>
   <xsd:element name="georasterMetadata">
      <xsd:complexType>
         <xsd:sequence>
            <xsd:element name="objectInfo" type="objectDescriptionType"/>
            <xsd:element name="rasterInfo" type="rasterDescriptionType"/>
            <xsd:element name="spatialReferenceInfo"
                  type="rasterSpatialReferenceSystemType" minOccurs="0"/>
            <xsd:element name="temporalReferenceInfo" 
                  type="rasterTemporalReferenceSystemType" minOccurs="0"/>
            <xsd:element name="bandReferenceInfo" 
                  type="rasterBandReferenceSystemType" minOccurs="0"/>
            <xsd:element name="layerInfo" type="layerDescriptionType" 
                  maxOccurs="unbounded"/>
            <xsd:element name="sourceInfo" type="xsd:string" 
                  minOccurs="0" maxOccurs="unbounded"/>
            <xsd:any minOccurs="0" maxOccurs="unbounded"/>
         </xsd:sequence>
      </xsd:complexType>
   </xsd:element>
</xsd:schema>