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org.geotools.gce.geotiff
Class GeoTiffIIOMetadataAdapter

java.lang.Object
  extended byorg.geotools.gce.geotiff.GeoTiffIIOMetadataAdapter
public class GeoTiffIIOMetadataAdapter
extends java.lang.Object

This class provides an abstraction from the details of TIFF data access for the purpose of retrieving GeoTIFF metadata from an image.

All of the GeoKey values are included here as constants, and the portions of the GeoTIFF specification pertaining to each have been copied for easy access.

The majority of the possible GeoKey values and their meanings are NOT reproduced here. Only the most important GeoKey code values have been copied, for others see the specification.

Convenience methods have been included to retrieve the various TIFFFields that are not part of the GeoKey directory, such as the Model Transformation and Model TiePoints. Retrieving a GeoKey from the GeoKey directory is a bit more specialized and requires knowledge of the correct key code.

Making use of the geographic metadata still requires some basic understanding of the GeoKey values that is not provided here.

For more information see the GeoTIFF specification at http://www.remotesensing.org/geotiff/spec/geotiffhome.html

Author:
Mike Nidel

Nested Class Summary
 class GeoTiffIIOMetadataAdapter.GeoKeyRecord
          This class is a holder for a GeoKey record containing four short values.
 
Field Summary
static int Angular_Arc_Minute
           
static int Angular_Arc_Second
           
static int Angular_Degree
           
static int Angular_DMS
           
static int Angular_DMS_Hemisphere
           
static int Angular_Gon
           
static int Angular_Grad
           
static int Angular_Radian
          6.3.1.4 Angular Units Codes These codes shall be used for any key that requires specification of an angular unit of measurement.
static int GCS_NAD27
          6.3.2.1 Geographic CS Type Codes Note: A Geographic coordinate system consists of both a datum and a Prime Meridian.
static int GCS_NAD83
           
static int GCS_WGS_72
           
static int GCS_WGS_72BE
           
static int GCS_WGS_84
           
static int GCSE_WGS84
           
static int GEO_KEY_DIRECTORY_VERSION_INDEX
          An index into the geoKey directory for the directory version number
static int GEO_KEY_MINOR_REVISION_INDEX
          An index into the geoKey directory for the geoKey minor revision number
static int GEO_KEY_NUM_KEYS_INDEX
          An index into the geoKey directory for the number of geoKeys
static int GEO_KEY_REVISION_INDEX
          An index into the geoKey directory for the geoKey revision number
static int GeogAngularUnitsGeoKey
          GeogAngularUnitsGeoKey Key ID = 2054 Type = SHORT (code) Values = Section 6.3.1.4 Codes Allows the definition of geocentric CS Linear units for user-defined GCS and for ellipsoids.
static int GeogAngularUnitSizeGeoKey
          GeogAngularUnitSizeGeoKey Key ID = 2055 Type = DOUBLE Units: radians Allows the definition of user-defined angular geographic units, as measured in radians.
static int GeogAzimuthUnitsGeoKey
          GeogAzimuthUnitsGeoKey Key ID = 2060 Type = SHORT (code) Values = Section 6.3.1.4 Codes This key may be used to specify the angular units of measurement used to defining azimuths, in geographic coordinate systems.
static int GeogCitationGeoKey
          GeogCitationGeoKey Key ID = 2049 Type = ASCII Values = text General citation and reference for all Geographic CS parameters.
static int GeogEllipsoidGeoKey
          GeogEllipsoidGeoKey Key ID = 2056 Type = SHORT (code) Values = Section 6.3.2.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.3 This key may be used to specify the coded ellipsoid used in the geodetic datum of the Geographic Coordinate System.
static int GeogGeodeticDatumGeoKey
          GeogGeodeticDatumGeoKey Key ID = 2050 Type = SHORT (code) Values = Section 6.3.2.2 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.2 This key may be used to specify the horizontal datum, defining the size, position and orientation of the reference ellipsoid used in user-defined geographic coordinate systems.
static int GeogInvFlatteningGeoKey
          GeogInvFlatteningGeoKey Key ID = 2059 Type = DOUBLE Units: none.
static int GeogLinearUnitsGeoKey
          GeogLinearUnitsGeoKey Key ID = 2052 Type = SHORT Values: Section 6.3.1.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.1.3 Allows the definition of geocentric CS linear units for user-defined GCS.
static int GeogLinearUnitSizeGeoKey
          GeogLinearUnitSizeGeoKey Key ID = 2053 Type = DOUBLE Units: meters Allows the definition of user-defined linear geocentric units, as measured in meters.
static int GeogPrimeMeridianGeoKey
          GeogPrimeMeridianGeoKey Key ID = 2051 Type = SHORT (code) Units: Section 6.3.2.4 code http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.4 Allows specification of the location of the Prime meridian for user-defined geographic coordinate systems.
static int GeogPrimeMeridianLongGeoKey
          GeogPrimeMeridianLongGeoKey Key ID = 2061 Type = DOUBLE Units = GeogAngularUnits This key allows definition of user-defined Prime Meridians, the location of which is defined by its longitude relative to Greenwich.
static int GeographicTypeGeoKey
          GeographicTypeGeoKey Key ID = 2048 Type = SHORT (code) Values = Section 6.3.2.1 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.1 This key may be used to specify the code for the geographic coordinate system used to map lat-long to a specific ellipsoid over the earth.
static int GeogSemiMajorAxisGeoKey
          GeogSemiMajorAxisGeoKey Key ID = 2057 Type = DOUBLE Units: Geocentric CS Linear Units Allows the specification of user-defined Ellipsoid Semi-Major Axis (a).
static int GeogSemiMinorAxisGeoKey
          GeogSemiMinorAxisGeoKey Key ID = 2058 Type = DOUBLE Units: Geocentric CS Linear Units Allows the specification of user-defined Ellipsoid Semi-Minor Axis (b).
static int GTCitationGeoKey
          GTCitationGeoKey Key ID = 1026 Type = ASCII As with all the "Citation" GeoKeys, this is provided to give an ASCII reference to published documentation on the overall configuration of this GeoTIFF file.
static int GTModelTypeGeoKey
          GTModelTypeGeoKey Key ID = 1024 Type: SHORT (code) Values: Section 6.3.1.1 Codes This GeoKey defines the general type of model Coordinate system used, and to which the raster space will be transformed: unknown, Geocentric (rarely used), Geographic, Projected Coordinate System, or user-defined.
static int GTRasterTypeGeoKey
          GTRasterTypeGeoKey Key ID = 1025 Type = Section 6.3.1.2 codes This establishes the Raster Space coordinate system used; there are currently only two, namely RasterPixelIsPoint and RasterPixelIsArea.
static int Linear_Chain_Benoit
           
static int Linear_Chain_Sears
           
static int Linear_Fathom
           
static int Linear_Foot
           
static int Linear_Foot_Clarke
           
static int Linear_Foot_Indian
           
static int Linear_Foot_Modified_American
           
static int Linear_Foot_US_Survey
           
static int Linear_Link
           
static int Linear_Link_Benoit
           
static int Linear_Link_Sears
           
static int Linear_Meter
          6.3.1.3 Linear Units Codes There are several different kinds of units that may be used in geographically related raster data: linear units, angular units, units of time (e.g. for radar-return), CCD-voltages, etc.
static int Linear_Mile_International_Nautical
           
static int Linear_Yard_Indian
           
static int Linear_Yard_Sears
           
static int ModelTypeGeocentric
           
static int ModelTypeGeographic
           
static int ModelTypeProjected
          6.3.1.1 Model Type Codes Ranges: 0 = undefined [ 1, 32766] = GeoTIFF Reserved Codes 32767 = user-defined [32768, 65535] = Private User Implementations GeoTIFF defined CS Model Type Codes: ModelTypeProjected = 1 Projection Coordinate System ModelTypeGeographic = 2 Geographic latitude-longitude System ModelTypeGeocentric = 3 Geocentric (X,Y,Z) Coordinate System Notes: 1.
static java.lang.String NUMBER_ATTR
          The DOM attribute name for a TIFF Field Tag (number)
static int PCS_WGS72_UTM_zone_1N
          6.3.3.1 Projected CS Type Codes Ranges: [ 1, 1000] = Obsolete EPSG/POSC Projection System Codes [20000, 32760] = EPSG Projection System codes 32767 = user-defined [32768, 65535] = Private User Implementations Special Ranges: 1.
static int PCS_WGS72_UTM_zone_1S
           
static int PCS_WGS72_UTM_zone_60N
           
static int PCS_WGS72_UTM_zone_60S
           
static int PCS_WGS72BE_UTM_zone_1N
           
static int PCS_WGS72BE_UTM_zone_1S
           
static int PCS_WGS72BE_UTM_zone_60S
           
static int PCS_WGS84_UTM_zone_1N
           
static int PCS_WGS84_UTM_zone_1S
           
static int PCS_WGS84_UTM_zone_60N
           
static int PCS_WGS84_UTM_zone_60S
           
static int PCSCitationGeoKey
          PCSCitationGeoKey Key ID = 3073 Type = ASCII As with all the "Citation" GeoKeys, this is provided to give an ASCII reference to published documentation on the Projected Coordinate System particularly if this is a "user-defined" PCS.
static int ProjAzimuthAngleGeoKey
          ProjAzimuthAngleGeoKey Key ID = 3094 Type = DOUBLE Units: GeogAzimuthUnit Azimuth angle east of true north of the central line passing through the projection center (for elliptical (Hotine) Oblique Mercator).
static int ProjCenterEastingGeoKey
          ProjCenterEastingGeoKey Key ID = 3090 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the center.
static int ProjCenterLatGeoKey
          ProjCenterLatGeoKey Key ID = 3089 Type = DOUBLE Units: GeogAngularUnit Latitude of Center of Projection.
static int ProjCenterLongGeoKey
          ProjCenterLongGeoKey Key ID = 3088 Type = DOUBLE Units: GeogAngularUnit Longitude of Center of Projection.
static int ProjCenterNorthingGeoKey
          ProjCenterNorthingGeoKey Key ID = 3091 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the center.
static int ProjCoordTransGeoKey
          ProjCoordTransGeoKey Key ID = 3075 Type = SHORT (code) Values: Section 6.3.3.3 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.3.3 Allows specification of the coordinate transformation method used.
static int ProjectedCSTypeGeoKey
          ProjectedCSTypeGeoKey Key ID = 3072 Type = SHORT (codes) Values: Section 6.3.3.1 codes This code is provided to specify the projected coordinate system.
static int ProjectionGeoKey
          ProjectionGeoKey Key ID = 3074 Type = SHORT (code) Values: Section 6.3.3.2 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.3.2 Allows specification of the coordinate transformation method and projection zone parameters.
static int ProjFalseEastingGeoKey
          ProjFalseEastingGeoKey Key ID = 3082 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the map projection Natural origin.
static int ProjFalseNorthingGeoKey
          ProjFalseNorthingGeoKey Key ID = 3083 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the map projection Natural origin.
static int ProjFalseOriginEastingGeoKey
          ProjFalseOriginEastingGeoKey Key ID = 3086 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the false origin.
static int ProjFalseOriginLatGeoKey
          ProjFalseOriginLatGeoKey Key ID = 3085 Type = DOUBLE Units: GeogAngularUnit Gives the latitude of the False origin.
static int ProjFalseOriginLongGeoKey
          ProjFalseOriginLongGeoKey Key ID = 3084 Type = DOUBLE Units: GeogAngularUnit Gives the longitude of the False origin.
static int ProjFalseOriginNorthingGeoKey
          ProjFalseOriginNorthingGeoKey Key ID = 3087 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the False origin.
static int ProjLinearUnitsGeoKey
          ProjLinearUnitsGeoKey Key ID = 3076 Type = SHORT (code) Values: Section 6.3.1.3 codes Defines linear units used by this projection.
static int ProjLinearUnitSizeGeoKey
          ProjLinearUnitSizeGeoKey Key ID = 3077 Type = DOUBLE Units: meters Defines size of user-defined linear units in meters.
static int ProjNatOriginLatGeoKey
          ProjNatOriginLatGeoKey Key ID = 3081 Type = DOUBLE Units: GeogAngularUnit Alias: ProjOriginLatGeoKey Latitude of map-projection Natural origin.
static int ProjNatOriginLongGeoKey
          ProjNatOriginLongGeoKey Key ID = 3080 Type = DOUBLE Units: GeogAngularUnit Alias: ProjOriginLongGeoKey Longitude of map-projection Natural origin.
static int ProjScaleAtCenterGeoKey
          ProjScaleAtCenterGeoKey Key ID = 3093 Type = DOUBLE Units: none Scale at Center.
static int ProjScaleAtNatOriginGeoKey
          ProjScaleAtNatOriginGeoKey Key ID = 3092 Type = DOUBLE Units: none Alias: ProjScaleAtOriginGeoKey (Rev. 0.2) Scale at Natural Origin.
static int ProjStdParallel1GeoKey
          ProjStdParallel1GeoKey Key ID = 3078 Type = DOUBLE Units: GeogAngularUnit Alias: ProjStdParallelGeoKey (from Rev 0.2) Latitude of primary Standard Parallel.
static int ProjStdParallel2GeoKey
          ProjStdParallel2GeoKey Key ID = 3079 Type = DOUBLE Units: GeogAngularUnit Latitude of second Standard Parallel.
static int ProjStraightVertPoleLongGeoKey
          ProjStraightVertPoleLongGeoKey Key ID = 3095 Type = DOUBLE Units: GeogAngularUnit Longitude at Straight Vertical Pole.
static int RasterPixelIsArea
          6.3.1.2 Raster Type Codes Ranges: 0 = undefined [ 1, 1023] = Raster Type Codes (GeoTIFF Defined) [1024, 32766] = Reserved 32767 = user-defined [32768, 65535]= Private User Implementations Note: Use of "user-defined" or "undefined" raster codes is not recommended.
static int RasterPixelIsPoint
           
static java.lang.String TIFF_ASCII_TAG
          The DOM element ID (tag) for a single TIFF Ascii value
static java.lang.String TIFF_ASCIIS_TAG
          The DOM element ID (tag) for a set of TIFF Ascii values
static java.lang.String TIFF_DOUBLE_TAG
          The DOM element ID (tag) for a single TIFF double.
static java.lang.String TIFF_DOUBLES_TAG
          The DOM element ID (tag) for a set of TIFF Double values
static java.lang.String TIFF_FIELD_TAG
          The DOM element ID (tag) for a TIFF Field
static java.lang.String TIFF_IFD_TAG
          The DOM element ID (tag) for a TIFF Image File Directory
static java.lang.String TIFF_SHORT_TAG
          The DOM element ID (tag) for a single TIFF Short value.
static java.lang.String TIFF_SHORTS_TAG
          The DOM element ID (tag) for a set of TIFF Short values
static java.lang.String VALUE_ATTR
          The DOM attribute name for a TIFF Entry value (whether Short, Double, or Ascii)
static int VerticalCitationGeoKey
          VerticalCitationGeoKey Key ID = 4097 Type = ASCII Values = text This key may be used to document the vertical coordinate system used, and its parameters.
static int VerticalCSTypeGeoKey
          VerticalCSTypeGeoKey Key ID = 4096 Type = SHORT (code) Values = Section 6.3.4.1 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.4.1 This key may be used to specify the vertical coordinate system.
static int VerticalDatumGeoKey
          VerticalDatumGeoKey Key ID = 4098 Type = SHORT (code) Values = Section 6.3.4.2 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.4.2 This key may be used to specify the vertical datum for the vertical coordinate system.
static int VerticalUnitsGeoKey
          VerticalUnitsGeoKey Key ID = 4099 Type = SHORT (code) Values = Section 6.3.1.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.1.3 This key may be used to specify the vertical units of measurement used in the geographic coordinate system, in cases where geographic CS's need to reference the vertical coordinate.
 
Constructor Summary
GeoTiffIIOMetadataAdapter(javax.imageio.metadata.IIOMetadata imageMetadata)
          The constructor builds a metadata adapter for the image metadata root IIOMetadataNode.
 
Method Summary
 java.lang.String getGeoKey(int keyID)
          Gets a GeoKey value as a String.
 int getGeoKeyDirectoryVersion()
          Gets the version of the GeoKey directory.
 int getGeoKeyMinorRevision()
          Gets the minor revision number of the GeoKeys in this metadata.
 GeoTiffIIOMetadataAdapter.GeoKeyRecord getGeoKeyRecord(int keyID)
          Gets a record containing the four TIFFShort values for a geokey entry.
 GeoTiffIIOMetadataAdapter.GeoKeyRecord getGeoKeyRecordByIndex(int index)
          Gets a record containing the four TIFFShort values for a geokey entry.
 int getGeoKeyRevision()
          Gets the revision number of the GeoKeys in this metadata.
 double[] getModelPixelScales()
          Gets the model pixel scales from the correct TIFFField
 double[] getModelTiePoints()
          Gets the model tie points from the appropriate TIFFField
 double[] getModelTransformation()
          Gets the model tie points from the appropriate TIFFField
 int getNumGeoKeys()
          Gets the number of GeoKeys in the geokeys directory.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

GTModelTypeGeoKey

public static final int GTModelTypeGeoKey
GTModelTypeGeoKey Key ID = 1024 Type: SHORT (code) Values: Section 6.3.1.1 Codes This GeoKey defines the general type of model Coordinate system used, and to which the raster space will be transformed: unknown, Geocentric (rarely used), Geographic, Projected Coordinate System, or user-defined. If the coordinate system is a PCS, then only the PCS code need be specified. If the coordinate system does not fit into one of the standard registered PCS'S, but it uses one of the standard projections and datums, then its should be documented as a PCS model with "user-defined" type, requiring the specification of projection parameters, etc. GeoKey requirements for User-Defined Model Type (not advisable): GTCitationGeoKey

See Also:
Constant Field Values

GTRasterTypeGeoKey

public static final int GTRasterTypeGeoKey
GTRasterTypeGeoKey Key ID = 1025 Type = Section 6.3.1.2 codes This establishes the Raster Space coordinate system used; there are currently only two, namely RasterPixelIsPoint and RasterPixelIsArea. No user-defined raster spaces are currently supported. For variance in imaging display parameters, such as pixel aspect-ratios, use the standard TIFF 6.0 device-space tags instead.

See Also:
Constant Field Values

GTCitationGeoKey

public static final int GTCitationGeoKey
GTCitationGeoKey Key ID = 1026 Type = ASCII As with all the "Citation" GeoKeys, this is provided to give an ASCII reference to published documentation on the overall configuration of this GeoTIFF file.

See Also:
Constant Field Values

GeographicTypeGeoKey

public static final int GeographicTypeGeoKey
GeographicTypeGeoKey Key ID = 2048 Type = SHORT (code) Values = Section 6.3.2.1 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.1 This key may be used to specify the code for the geographic coordinate system used to map lat-long to a specific ellipsoid over the earth. GeoKey Requirements for User-Defined geographic CS: GeogCitationGeoKey GeogGeodeticDatumGeoKey GeogAngularUnitsGeoKey (if not degrees) GeogPrimeMeridianGeoKey (if not Greenwich)

See Also:
Constant Field Values

GeogCitationGeoKey

public static final int GeogCitationGeoKey
GeogCitationGeoKey Key ID = 2049 Type = ASCII Values = text General citation and reference for all Geographic CS parameters.

See Also:
Constant Field Values

GeogGeodeticDatumGeoKey

public static final int GeogGeodeticDatumGeoKey
GeogGeodeticDatumGeoKey Key ID = 2050 Type = SHORT (code) Values = Section 6.3.2.2 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.2 This key may be used to specify the horizontal datum, defining the size, position and orientation of the reference ellipsoid used in user-defined geographic coordinate systems. GeoKey Requirements for User-Defined Horizontal Datum: GeogCitationGeoKey GeogEllipsoidGeoKey

See Also:
Constant Field Values

GeogPrimeMeridianGeoKey

public static final int GeogPrimeMeridianGeoKey
GeogPrimeMeridianGeoKey Key ID = 2051 Type = SHORT (code) Units: Section 6.3.2.4 code http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.4 Allows specification of the location of the Prime meridian for user-defined geographic coordinate systems. The default standard is Greenwich, England.

See Also:
Constant Field Values

GeogPrimeMeridianLongGeoKey

public static final int GeogPrimeMeridianLongGeoKey
GeogPrimeMeridianLongGeoKey Key ID = 2061 Type = DOUBLE Units = GeogAngularUnits This key allows definition of user-defined Prime Meridians, the location of which is defined by its longitude relative to Greenwich.

See Also:
Constant Field Values

GeogLinearUnitsGeoKey

public static final int GeogLinearUnitsGeoKey
GeogLinearUnitsGeoKey Key ID = 2052 Type = SHORT Values: Section 6.3.1.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.1.3 Allows the definition of geocentric CS linear units for user-defined GCS.

See Also:
Constant Field Values

GeogLinearUnitSizeGeoKey

public static final int GeogLinearUnitSizeGeoKey
GeogLinearUnitSizeGeoKey Key ID = 2053 Type = DOUBLE Units: meters Allows the definition of user-defined linear geocentric units, as measured in meters.

See Also:
Constant Field Values

GeogAngularUnitsGeoKey

public static final int GeogAngularUnitsGeoKey
GeogAngularUnitsGeoKey Key ID = 2054 Type = SHORT (code) Values = Section 6.3.1.4 Codes Allows the definition of geocentric CS Linear units for user-defined GCS and for ellipsoids. GeoKey Requirements for "user-defined" units: GeogCitationGeoKey GeogAngularUnitSizeGeoKey

See Also:
Constant Field Values

GeogAngularUnitSizeGeoKey

public static final int GeogAngularUnitSizeGeoKey
GeogAngularUnitSizeGeoKey Key ID = 2055 Type = DOUBLE Units: radians Allows the definition of user-defined angular geographic units, as measured in radians.

See Also:
Constant Field Values

GeogEllipsoidGeoKey

public static final int GeogEllipsoidGeoKey
GeogEllipsoidGeoKey Key ID = 2056 Type = SHORT (code) Values = Section 6.3.2.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.2.3 This key may be used to specify the coded ellipsoid used in the geodetic datum of the Geographic Coordinate System. GeoKey Requirements for User-Defined Ellipsoid: GeogCitationGeoKey [GeogSemiMajorAxisGeoKey, [GeogSemiMinorAxisGeoKey | GeogInvFlatteningGeoKey] ]

See Also:
Constant Field Values

GeogSemiMajorAxisGeoKey

public static final int GeogSemiMajorAxisGeoKey
GeogSemiMajorAxisGeoKey Key ID = 2057 Type = DOUBLE Units: Geocentric CS Linear Units Allows the specification of user-defined Ellipsoid Semi-Major Axis (a).

See Also:
Constant Field Values

GeogSemiMinorAxisGeoKey

public static final int GeogSemiMinorAxisGeoKey
GeogSemiMinorAxisGeoKey Key ID = 2058 Type = DOUBLE Units: Geocentric CS Linear Units Allows the specification of user-defined Ellipsoid Semi-Minor Axis (b).

See Also:
Constant Field Values

GeogInvFlatteningGeoKey

public static final int GeogInvFlatteningGeoKey
GeogInvFlatteningGeoKey Key ID = 2059 Type = DOUBLE Units: none. Allows the specification of the inverse of user-defined Ellipsoid's flattening parameter (f). The eccentricity-squared e^2 of the ellipsoid is related to the non-inverted f by: e^2 = 2f - f^2 Note: if the ellipsoid is spherical the inverse-flattening becomes infinite; use the GeogSemiMinorAxisGeoKey instead, and set it equal to the semi-major axis length.

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Constant Field Values

GeogAzimuthUnitsGeoKey

public static final int GeogAzimuthUnitsGeoKey
GeogAzimuthUnitsGeoKey Key ID = 2060 Type = SHORT (code) Values = Section 6.3.1.4 Codes This key may be used to specify the angular units of measurement used to defining azimuths, in geographic coordinate systems. These may be used for defining azimuthal parameters for some projection algorithms, and may not necessarily be the same angular units used for lat-long.

See Also:
Constant Field Values

ProjectedCSTypeGeoKey

public static final int ProjectedCSTypeGeoKey
ProjectedCSTypeGeoKey Key ID = 3072 Type = SHORT (codes) Values: Section 6.3.3.1 codes This code is provided to specify the projected coordinate system. GeoKey requirements for "user-defined" PCS families: PCSCitationGeoKey ProjectionGeoKey

See Also:
Constant Field Values

PCSCitationGeoKey

public static final int PCSCitationGeoKey
PCSCitationGeoKey Key ID = 3073 Type = ASCII As with all the "Citation" GeoKeys, this is provided to give an ASCII reference to published documentation on the Projected Coordinate System particularly if this is a "user-defined" PCS.

See Also:
Constant Field Values

ProjectionGeoKey

public static final int ProjectionGeoKey
ProjectionGeoKey Key ID = 3074 Type = SHORT (code) Values: Section 6.3.3.2 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.3.2 Allows specification of the coordinate transformation method and projection zone parameters. Note : when associated with an appropriate Geographic Coordinate System, this forms a Projected Coordinate System. GeoKeys Required for "user-defined" Projections: PCSCitationGeoKey ProjCoordTransGeoKey ProjLinearUnitsGeoKey (additional parameters depending on ProjCoordTransGeoKey).

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Constant Field Values

ProjCoordTransGeoKey

public static final int ProjCoordTransGeoKey
ProjCoordTransGeoKey Key ID = 3075 Type = SHORT (code) Values: Section 6.3.3.3 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.3.3 Allows specification of the coordinate transformation method used. Note: this does not include the definition of the corresponding Geographic Coordinate System to which the projected CS is related; only the transformation method is defined here. GeoKeys Required for "user-defined" Coordinate Transformations: PCSCitationGeoKey (additional parameter geokeys depending on the Coord. Trans. specified).

See Also:
Constant Field Values

ProjLinearUnitsGeoKey

public static final int ProjLinearUnitsGeoKey
ProjLinearUnitsGeoKey Key ID = 3076 Type = SHORT (code) Values: Section 6.3.1.3 codes Defines linear units used by this projection. http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.1.3

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Constant Field Values

ProjLinearUnitSizeGeoKey

public static final int ProjLinearUnitSizeGeoKey
ProjLinearUnitSizeGeoKey Key ID = 3077 Type = DOUBLE Units: meters Defines size of user-defined linear units in meters.

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Constant Field Values

ProjStdParallel1GeoKey

public static final int ProjStdParallel1GeoKey
ProjStdParallel1GeoKey Key ID = 3078 Type = DOUBLE Units: GeogAngularUnit Alias: ProjStdParallelGeoKey (from Rev 0.2) Latitude of primary Standard Parallel.

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ProjStdParallel2GeoKey

public static final int ProjStdParallel2GeoKey
ProjStdParallel2GeoKey Key ID = 3079 Type = DOUBLE Units: GeogAngularUnit Latitude of second Standard Parallel.

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Constant Field Values

ProjNatOriginLongGeoKey

public static final int ProjNatOriginLongGeoKey
ProjNatOriginLongGeoKey Key ID = 3080 Type = DOUBLE Units: GeogAngularUnit Alias: ProjOriginLongGeoKey Longitude of map-projection Natural origin.

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ProjNatOriginLatGeoKey

public static final int ProjNatOriginLatGeoKey
ProjNatOriginLatGeoKey Key ID = 3081 Type = DOUBLE Units: GeogAngularUnit Alias: ProjOriginLatGeoKey Latitude of map-projection Natural origin.

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ProjFalseEastingGeoKey

public static final int ProjFalseEastingGeoKey
ProjFalseEastingGeoKey Key ID = 3082 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the map projection Natural origin.

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ProjFalseNorthingGeoKey

public static final int ProjFalseNorthingGeoKey
ProjFalseNorthingGeoKey Key ID = 3083 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the map projection Natural origin.

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ProjFalseOriginLongGeoKey

public static final int ProjFalseOriginLongGeoKey
ProjFalseOriginLongGeoKey Key ID = 3084 Type = DOUBLE Units: GeogAngularUnit Gives the longitude of the False origin.

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ProjFalseOriginLatGeoKey

public static final int ProjFalseOriginLatGeoKey
ProjFalseOriginLatGeoKey Key ID = 3085 Type = DOUBLE Units: GeogAngularUnit Gives the latitude of the False origin.

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ProjFalseOriginEastingGeoKey

public static final int ProjFalseOriginEastingGeoKey
ProjFalseOriginEastingGeoKey Key ID = 3086 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the false origin. This is NOT the False Easting, which is the easting attached to the Natural origin.

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ProjFalseOriginNorthingGeoKey

public static final int ProjFalseOriginNorthingGeoKey
ProjFalseOriginNorthingGeoKey Key ID = 3087 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the False origin. This is NOT the False Northing, which is the northing attached to the Natural origin.

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Constant Field Values

ProjCenterLongGeoKey

public static final int ProjCenterLongGeoKey
ProjCenterLongGeoKey Key ID = 3088 Type = DOUBLE Units: GeogAngularUnit Longitude of Center of Projection. Note that this is not necessarily the origin of the projection.

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Constant Field Values

ProjCenterLatGeoKey

public static final int ProjCenterLatGeoKey
ProjCenterLatGeoKey Key ID = 3089 Type = DOUBLE Units: GeogAngularUnit Latitude of Center of Projection. Note that this is not necessarily the origin of the projection.

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Constant Field Values

ProjCenterEastingGeoKey

public static final int ProjCenterEastingGeoKey
ProjCenterEastingGeoKey Key ID = 3090 Type = DOUBLE Units: ProjLinearUnit Gives the easting coordinate of the center. This is NOT the False Easting.

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Constant Field Values

ProjCenterNorthingGeoKey

public static final int ProjCenterNorthingGeoKey
ProjCenterNorthingGeoKey Key ID = 3091 Type = DOUBLE Units: ProjLinearUnit Gives the northing coordinate of the center. This is NOT the False Northing. NOTE this value is incorrectly named at http://www.remotesensing.org/geotiff/spec/geotiff2.7.html#2.7

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Constant Field Values

ProjScaleAtNatOriginGeoKey

public static final int ProjScaleAtNatOriginGeoKey
ProjScaleAtNatOriginGeoKey Key ID = 3092 Type = DOUBLE Units: none Alias: ProjScaleAtOriginGeoKey (Rev. 0.2) Scale at Natural Origin. This is a ratio, so no units are required.

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ProjScaleAtCenterGeoKey

public static final int ProjScaleAtCenterGeoKey
ProjScaleAtCenterGeoKey Key ID = 3093 Type = DOUBLE Units: none Scale at Center. This is a ratio, so no units are required.

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ProjAzimuthAngleGeoKey

public static final int ProjAzimuthAngleGeoKey
ProjAzimuthAngleGeoKey Key ID = 3094 Type = DOUBLE Units: GeogAzimuthUnit Azimuth angle east of true north of the central line passing through the projection center (for elliptical (Hotine) Oblique Mercator). Note that this is the standard method of measuring azimuth, but is opposite the usual mathematical convention of positive indicating counter-clockwise.

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Constant Field Values

ProjStraightVertPoleLongGeoKey

public static final int ProjStraightVertPoleLongGeoKey
ProjStraightVertPoleLongGeoKey Key ID = 3095 Type = DOUBLE Units: GeogAngularUnit Longitude at Straight Vertical Pole. For polar stereographic.

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Constant Field Values

VerticalCSTypeGeoKey

public static final int VerticalCSTypeGeoKey
VerticalCSTypeGeoKey Key ID = 4096 Type = SHORT (code) Values = Section 6.3.4.1 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.4.1 This key may be used to specify the vertical coordinate system.

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VerticalCitationGeoKey

public static final int VerticalCitationGeoKey
VerticalCitationGeoKey Key ID = 4097 Type = ASCII Values = text This key may be used to document the vertical coordinate system used, and its parameters.

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VerticalDatumGeoKey

public static final int VerticalDatumGeoKey
VerticalDatumGeoKey Key ID = 4098 Type = SHORT (code) Values = Section 6.3.4.2 codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.4.2 This key may be used to specify the vertical datum for the vertical coordinate system.

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Constant Field Values

VerticalUnitsGeoKey

public static final int VerticalUnitsGeoKey
VerticalUnitsGeoKey Key ID = 4099 Type = SHORT (code) Values = Section 6.3.1.3 Codes http://www.remotesensing.org/geotiff/spec/geotiff6.html#6.3.1.3 This key may be used to specify the vertical units of measurement used in the geographic coordinate system, in cases where geographic CS's need to reference the vertical coordinate. This, together with the Citation key, comprise the only fully implemented keys in this section, at present.

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Constant Field Values

ModelTypeProjected

public static final int ModelTypeProjected
6.3.1.1 Model Type Codes Ranges: 0 = undefined [ 1, 32766] = GeoTIFF Reserved Codes 32767 = user-defined [32768, 65535] = Private User Implementations GeoTIFF defined CS Model Type Codes: ModelTypeProjected = 1 Projection Coordinate System ModelTypeGeographic = 2 Geographic latitude-longitude System ModelTypeGeocentric = 3 Geocentric (X,Y,Z) Coordinate System Notes: 1. ModelTypeGeographic and ModelTypeProjected correspond to the FGDC metadata Geographic and Planar-Projected coordinate system types.

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ModelTypeGeographic

public static final int ModelTypeGeographic
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ModelTypeGeocentric

public static final int ModelTypeGeocentric
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RasterPixelIsArea

public static final int RasterPixelIsArea
6.3.1.2 Raster Type Codes Ranges: 0 = undefined [ 1, 1023] = Raster Type Codes (GeoTIFF Defined) [1024, 32766] = Reserved 32767 = user-defined [32768, 65535]= Private User Implementations Note: Use of "user-defined" or "undefined" raster codes is not recommended.

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RasterPixelIsPoint

public static final int RasterPixelIsPoint
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Linear_Meter

public static final int Linear_Meter
6.3.1.3 Linear Units Codes There are several different kinds of units that may be used in geographically related raster data: linear units, angular units, units of time (e.g. for radar-return), CCD-voltages, etc. For this reason there will be a single, unique range for each kind of unit, broken down into the following currently defined ranges: Ranges: 0 = undefined [ 1, 2000] = Obsolete GeoTIFF codes [2001, 8999] = Reserved by GeoTIFF [9000, 9099] = EPSG Linear Units. [9100, 9199] = EPSG Angular Units. 32767 = user-defined unit [32768, 65535]= Private User Implementations

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Constant Field Values

Linear_Foot

public static final int Linear_Foot
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Linear_Foot_US_Survey

public static final int Linear_Foot_US_Survey
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Linear_Foot_Modified_American

public static final int Linear_Foot_Modified_American
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Linear_Foot_Clarke

public static final int Linear_Foot_Clarke
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Linear_Foot_Indian

public static final int Linear_Foot_Indian
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Linear_Link

public static final int Linear_Link
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Linear_Link_Benoit

public static final int Linear_Link_Benoit
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Linear_Link_Sears

public static final int Linear_Link_Sears
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Linear_Chain_Benoit

public static final int Linear_Chain_Benoit
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Linear_Chain_Sears

public static final int Linear_Chain_Sears
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Linear_Yard_Sears

public static final int Linear_Yard_Sears
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Linear_Yard_Indian

public static final int Linear_Yard_Indian
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Linear_Fathom

public static final int Linear_Fathom
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Linear_Mile_International_Nautical

public static final int Linear_Mile_International_Nautical
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Angular_Radian

public static final int Angular_Radian
6.3.1.4 Angular Units Codes These codes shall be used for any key that requires specification of an angular unit of measurement.

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Angular_Degree

public static final int Angular_Degree
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Angular_Arc_Minute

public static final int Angular_Arc_Minute
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Angular_Arc_Second

public static final int Angular_Arc_Second
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Angular_Grad

public static final int Angular_Grad
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Angular_Gon

public static final int Angular_Gon
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Angular_DMS

public static final int Angular_DMS
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Angular_DMS_Hemisphere

public static final int Angular_DMS_Hemisphere
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GCS_NAD27

public static final int GCS_NAD27
6.3.2.1 Geographic CS Type Codes Note: A Geographic coordinate system consists of both a datum and a Prime Meridian. Some of the names are very similar, and differ only in the Prime Meridian, so be sure to use the correct one. The codes beginning with GCSE_xxx are unspecified GCS which use ellipsoid (xxx); it is recommended that only the codes beginning with GCS_ be used if possible. Ranges: 0 = undefined [ 1, 1000] = Obsolete EPSG/POSC Geographic Codes [ 1001, 3999] = Reserved by GeoTIFF [ 4000, 4199] = EPSG GCS Based on Ellipsoid only [ 4200, 4999] = EPSG GCS Based on EPSG Datum [ 5000, 32766] = Reserved by GeoTIFF 32767 = user-defined GCS [32768, 65535] = Private User Implementations Values: Note: Geodetic datum using Greenwich PM have codes equal to the corresponding Datum code - 2000. Ellipsoid-Only GCS: Note: the numeric code is equal to the code of the correspoding EPSG ellipsoid, minus 3000. Note: Only a handful of values have been reproduced here, for the remainder see the GeoTIFF specification.

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GCS_NAD83

public static final int GCS_NAD83
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GCS_WGS_72

public static final int GCS_WGS_72
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GCS_WGS_72BE

public static final int GCS_WGS_72BE
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GCS_WGS_84

public static final int GCS_WGS_84
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GCSE_WGS84

public static final int GCSE_WGS84
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PCS_WGS72_UTM_zone_1N

public static final int PCS_WGS72_UTM_zone_1N
6.3.3.1 Projected CS Type Codes Ranges: [ 1, 1000] = Obsolete EPSG/POSC Projection System Codes [20000, 32760] = EPSG Projection System codes 32767 = user-defined [32768, 65535] = Private User Implementations Special Ranges: 1. For PCS utilizing GeogCS with code in range 4201 through 4321: As far as is possible the PCS code will be of the format gggzz where ggg is (geodetic datum code -4000) and zz is zone. 2. For PCS utilizing GeogCS with code out of range 4201 through 4321 (i.e. geodetic datum code 6201 through 6319). PCS code 20xxx where xxx is a sequential number. 3. Other: WGS72 / UTM northern hemisphere: 322zz where zz is UTM zone number WGS72 / UTM southern hemisphere: 323zz where zz is UTM zone number WGS72BE / UTM northern hemisphere: 324zz where zz is UTM zone number WGS72BE / UTM southern hemisphere: 325zz where zz is UTM zone number WGS84 / UTM northern hemisphere: 326zz where zz is UTM zone number WGS84 / UTM southern hemisphere: 327zz where zz is UTM zone number US State Plane (NAD27): 267xx/320xx US State Plane (NAD83): 269xx/321xx Note: These are only a subset of the possible values

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PCS_WGS72_UTM_zone_60N

public static final int PCS_WGS72_UTM_zone_60N
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PCS_WGS72_UTM_zone_1S

public static final int PCS_WGS72_UTM_zone_1S
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PCS_WGS72_UTM_zone_60S

public static final int PCS_WGS72_UTM_zone_60S
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PCS_WGS72BE_UTM_zone_1N

public static final int PCS_WGS72BE_UTM_zone_1N
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PCS_WGS72BE_UTM_zone_1S

public static final int PCS_WGS72BE_UTM_zone_1S
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PCS_WGS72BE_UTM_zone_60S

public static final int PCS_WGS72BE_UTM_zone_60S
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PCS_WGS84_UTM_zone_1N

public static final int PCS_WGS84_UTM_zone_1N
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PCS_WGS84_UTM_zone_60N

public static final int PCS_WGS84_UTM_zone_60N
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PCS_WGS84_UTM_zone_1S

public static final int PCS_WGS84_UTM_zone_1S
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PCS_WGS84_UTM_zone_60S

public static final int PCS_WGS84_UTM_zone_60S
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GEO_KEY_DIRECTORY_VERSION_INDEX

public static final int GEO_KEY_DIRECTORY_VERSION_INDEX
An index into the geoKey directory for the directory version number

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GEO_KEY_REVISION_INDEX

public static final int GEO_KEY_REVISION_INDEX
An index into the geoKey directory for the geoKey revision number

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GEO_KEY_MINOR_REVISION_INDEX

public static final int GEO_KEY_MINOR_REVISION_INDEX
An index into the geoKey directory for the geoKey minor revision number

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GEO_KEY_NUM_KEYS_INDEX

public static final int GEO_KEY_NUM_KEYS_INDEX
An index into the geoKey directory for the number of geoKeys

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TIFF_IFD_TAG

public static final java.lang.String TIFF_IFD_TAG
The DOM element ID (tag) for a TIFF Image File Directory

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TIFF_FIELD_TAG

public static final java.lang.String TIFF_FIELD_TAG
The DOM element ID (tag) for a TIFF Field

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TIFF_DOUBLES_TAG

public static final java.lang.String TIFF_DOUBLES_TAG
The DOM element ID (tag) for a set of TIFF Double values

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TIFF_DOUBLE_TAG

public static final java.lang.String TIFF_DOUBLE_TAG
The DOM element ID (tag) for a single TIFF double. The value is stored in an attribute named "value"

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TIFF_SHORTS_TAG

public static final java.lang.String TIFF_SHORTS_TAG
The DOM element ID (tag) for a set of TIFF Short values

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TIFF_SHORT_TAG

public static final java.lang.String TIFF_SHORT_TAG
The DOM element ID (tag) for a single TIFF Short value. The value is stored in an attribute named "value"

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TIFF_ASCIIS_TAG

public static final java.lang.String TIFF_ASCIIS_TAG
The DOM element ID (tag) for a set of TIFF Ascii values

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TIFF_ASCII_TAG

public static final java.lang.String TIFF_ASCII_TAG
The DOM element ID (tag) for a single TIFF Ascii value

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NUMBER_ATTR

public static final java.lang.String NUMBER_ATTR
The DOM attribute name for a TIFF Field Tag (number)

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VALUE_ATTR

public static final java.lang.String VALUE_ATTR
The DOM attribute name for a TIFF Entry value (whether Short, Double, or Ascii)

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Constructor Detail

GeoTiffIIOMetadataAdapter

public GeoTiffIIOMetadataAdapter(javax.imageio.metadata.IIOMetadata imageMetadata)
The constructor builds a metadata adapter for the image metadata root IIOMetadataNode.

Parameters:
imageMetadata - The image metadata
Method Detail

getGeoKeyDirectoryVersion

public int getGeoKeyDirectoryVersion()
Gets the version of the GeoKey directory. This is typically a value of 1 and can be used to check that the data is of a valid format.

Returns:
DOCUMENT ME!
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getGeoKeyRevision

public int getGeoKeyRevision()
Gets the revision number of the GeoKeys in this metadata.

Returns:
DOCUMENT ME!
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getGeoKeyMinorRevision

public int getGeoKeyMinorRevision()
Gets the minor revision number of the GeoKeys in this metadata.

Returns:
DOCUMENT ME!
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getNumGeoKeys

public int getNumGeoKeys()
Gets the number of GeoKeys in the geokeys directory.

Returns:
DOCUMENT ME!
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getGeoKey

public java.lang.String getGeoKey(int keyID)
Gets a GeoKey value as a String. This implementation should be "quiet" in the sense that it should not throw any exceptions but only return null in the event that the data organization is not as expected.

Parameters:
keyID - The numeric ID of the GeoKey
Returns:
A string representing the value, or null if the key was not found.

getGeoKeyRecord

public GeoTiffIIOMetadataAdapter.GeoKeyRecord getGeoKeyRecord(int keyID)
Gets a record containing the four TIFFShort values for a geokey entry. For more information see the GeoTIFF specification.

Parameters:
keyID - DOCUMENT ME!
Returns:
the record with the given keyID, or null if none is found
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getGeoKeyRecordByIndex

public GeoTiffIIOMetadataAdapter.GeoKeyRecord getGeoKeyRecordByIndex(int index)
Gets a record containing the four TIFFShort values for a geokey entry. For more information see the GeoTIFF specification.

Parameters:
index - DOCUMENT ME!
Returns:
the record with the given keyID, or null if none is found
Throws:
java.lang.UnsupportedOperationException - DOCUMENT ME!

getModelPixelScales

public double[] getModelPixelScales()
Gets the model pixel scales from the correct TIFFField

Returns:
DOCUMENT ME!

getModelTiePoints

public double[] getModelTiePoints()
Gets the model tie points from the appropriate TIFFField

Returns:
the tie points, or null if not found

getModelTransformation

public double[] getModelTransformation()
Gets the model tie points from the appropriate TIFFField

Returns:
the tie points, or null if not found
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