org.geotools.gce.geotiff
Class GeoTiffCoordinateSystemAdapter

java.lang.Object
  org.geotools.gce.geotiff.GeoTiffCoordinateSystemAdapter

public class GeoTiffCoordinateSystemAdapter

extends java.lang.Object

The GeoTiffCoordinateSystemAdapter is responsible for interpreting the metadata provided by the GeoTiffIIOMetadataAdapter for the purposes of constructing a CoordinateSystem object representative of the information found in the tags.

This class implements the flow indicated by the following diagram:

To use this class, the GeoTiffReader should create an instance with the CoordinateSystemAuthorityFactory specified by the GeoTiffFormat instance which created the reader. The image specific metadata should then be set with the appropriate accessor methods. Finally, the createCoordinateSystem() method is called to produce the CoordinateReferenceSystem object specified by the metadata.

Author:

Bryce Nordgren / USDA Forest Service

Field Summary

static short	CT_AlbersEqualArea
static short	CT_AzimuthalEquidistant
static short	CT_CassiniSoldner
static short	CT_EquidistantConic
static short	CT_Equirectangular
static short	CT_Gnomonic
static short	CT_LambertAzimEqualArea
static short	CT_LambertConfConic_2SP
static short	CT_LambertConfConic_Helmert
static short	CT_Mercator
static short	CT_MillerCylindrical
static short	CT_NewZealandMapGrid
static short	CT_ObliqueMercator
static short	CT_ObliqueMercator_Laborde
static short	CT_ObliqueMercator_Rosenmund
static short	CT_ObliqueMercator_Spherical
static short	CT_ObliqueStereographic
static short	CT_Orthographic
static short	CT_PolarStereographic
static short	CT_Polyconic
static short	CT_Robinson
static short	CT_Sinusoidal
static short	CT_Stereographic
static short	CT_TransverseMercator
static short	CT_TransverseMercator_Modified_Alaska
static short	CT_TransvMercator_SouthOriented
static short	CT_VanDerGrinten

Constructor Summary

GeoTiffCoordinateSystemAdapter(Hints hints)
Creates a new instance of GeoTiffCoordinateSystemAdapter

Method Summary

org.opengis.referencing.crs.CoordinateReferenceSystem	createCoordinateSystem() This method creates a CoordinateReferenceSystem object from the metadata which has been set earlier.
org.opengis.referencing.crs.CRSAuthorityFactory	getCRSFactory() Returns the CRSAuthorityFactory instance used by this object.
org.opengis.referencing.cs.CSAuthorityFactory	getCSFactory() Returns the CSAuthorityFactory instance used by this object.
org.opengis.referencing.datum.DatumAuthorityFactory	getDatumFactory() Returns the DatumAuthorityFactory instance used by this object.
GeoTiffIIOMetadataAdapter	getMetadata() Getter for property metadata.
void	setMetadata(GeoTiffIIOMetadataAdapter metadata) Setter for property metadata.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CT_TransverseMercator

public static final short CT_TransverseMercator

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Constant Field Values

CT_TransverseMercator_Modified_Alaska

public static final short CT_TransverseMercator_Modified_Alaska

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CT_ObliqueMercator

public static final short CT_ObliqueMercator

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CT_ObliqueMercator_Laborde

public static final short CT_ObliqueMercator_Laborde

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CT_ObliqueMercator_Rosenmund

public static final short CT_ObliqueMercator_Rosenmund

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CT_ObliqueMercator_Spherical

public static final short CT_ObliqueMercator_Spherical

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CT_Mercator

public static final short CT_Mercator

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CT_LambertConfConic_2SP

public static final short CT_LambertConfConic_2SP

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CT_LambertConfConic_Helmert

public static final short CT_LambertConfConic_Helmert

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Constant Field Values

CT_LambertAzimEqualArea

public static final short CT_LambertAzimEqualArea

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CT_AlbersEqualArea

public static final short CT_AlbersEqualArea

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CT_AzimuthalEquidistant

public static final short CT_AzimuthalEquidistant

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CT_EquidistantConic

public static final short CT_EquidistantConic

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CT_Stereographic

public static final short CT_Stereographic

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CT_PolarStereographic

public static final short CT_PolarStereographic

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CT_ObliqueStereographic

public static final short CT_ObliqueStereographic

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CT_Equirectangular

public static final short CT_Equirectangular

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CT_CassiniSoldner

public static final short CT_CassiniSoldner

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Constant Field Values

CT_Gnomonic

public static final short CT_Gnomonic

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CT_MillerCylindrical

public static final short CT_MillerCylindrical

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CT_Orthographic

public static final short CT_Orthographic

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CT_Polyconic

public static final short CT_Polyconic

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CT_Robinson

public static final short CT_Robinson

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CT_Sinusoidal

public static final short CT_Sinusoidal

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CT_VanDerGrinten

public static final short CT_VanDerGrinten

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CT_NewZealandMapGrid

public static final short CT_NewZealandMapGrid

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Constant Field Values

CT_TransvMercator_SouthOriented

public static final short CT_TransvMercator_SouthOriented

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Constant Field Values

Constructor Detail

GeoTiffCoordinateSystemAdapter

public GeoTiffCoordinateSystemAdapter(Hints hints)

Creates a new instance of GeoTiffCoordinateSystemAdapter

Parameters:

hints - a map of hints to locate the authority and object factories. (can be null)

Method Detail

getCSFactory

public org.opengis.referencing.cs.CSAuthorityFactory getCSFactory()

Returns the CSAuthorityFactory instance used by this object.

Returns:

CSAuthorityFactory in use.

getCRSFactory

public org.opengis.referencing.crs.CRSAuthorityFactory getCRSFactory()

Returns the CRSAuthorityFactory instance used by this object.

Returns:

CRSAuthorityFactory in use.

getDatumFactory

public org.opengis.referencing.datum.DatumAuthorityFactory getDatumFactory()

Returns the DatumAuthorityFactory instance used by this object.

Returns:

DatumAuthorityFactory in use.

createCoordinateSystem

public org.opengis.referencing.crs.CoordinateReferenceSystem createCoordinateSystem()
                                                                             throws java.io.IOException

This method creates a CoordinateReferenceSystem object from the metadata which has been set earlier. If it cannot create the CoordinateReferenceSystem, then one of three exceptions is thrown to indicate the error.

Returns:

the CoordinateReferenceSystem object representing the file data

Throws:

java.io.IOException - if there is unexpected data in the GeoKey tags.

java.lang.NullPointerException - if the crsFactory or metadata are uninitialized

java.lang.UnsupportedOperationException - if the coordinate system specified by the GeoTiff file is not supported.

getMetadata

public GeoTiffIIOMetadataAdapter getMetadata()

Getter for property metadata.

Returns:

Value of property metadata.

setMetadata

public void setMetadata(GeoTiffIIOMetadataAdapter metadata)

Setter for property metadata.

Parameters:

metadata - New value of property metadata.