org.tinfour.gis.las

Class GeoTiffData

java.lang.Object

org.tinfour.gis.las.GeoTiffData

public class GeoTiffData
extends Object

Provides the main data collection for accessing data from the embedded GeoTIFF tags in a LAS file.

Field Summary

Fields

Modifier and Type	Field and Description
static int	GeoCitationGeoKey Key code for the GeoCitationGeoKey specification
static int	GeoDoubleParamsTag The code for a TIFF tag containing floating point parameters (doubles) for the GeoTIFF specification
static int	GeoKeyDirectoryTag The code for a TIFF tag containing integer specifications for GeoTIFF tags.
static int	GtModelTypeGeoKey Key code for the GtModelTypeGeoKey specification
static int	LinearUnitCodeFeet Linear Unit Code for feet, from GeoTiff spec 6.3.1.3
static int	LinearUnitCodeFeetUS Linear Unit Code for feet, from GeoTiff spec 6.3.1.3
static int	LinearUnitCodeMeter Linear Unit Code for feet, from GeoTiff spec 6.3.1.3
static int	PCSCitationGeoKey Key code for the PCSCitationGeoKey specification
static int	ProjLinearUnitsGeoKey Key code for the ProjLinearUnitsGeoKey specification
static int	VerticalUnitsGeoKey Key code for the VerticalLinearUnitsGeoKey specification

Constructor Summary

Constructors

Constructor and Description
GeoTiffData(List<GeoTiffKey> keyList, double[] fpData, char[] asciiData)

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(int keyCode) Indicates whether the GeoTiffData collection contains an entry for the specified key code.
double[]	getDouble(int keyCode) Gets an array of one or more doubles containing the value or values associated with the specified key code.
int	getInteger(int keyCode) Gets the single integer value associated with the GeoTIFF keycode.
List<GeoTiffKey>	getKeyList() Gets a list of the keys defined by this GeoTiffData collection
String	getString(int keyCode) Gets the single String value associated with the GeoTIFF keycode.
boolean	usesGeographicCoordinates() Indicates whether the GeoTIFF data specifies a geographic coordinate system
boolean	usesProjectedCoordinates() Indicates whether the GeoTIFF data specifies a projected coordinate system

Methods inherited from class java.lang.Object

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

Field Detail

GeoKeyDirectoryTag

public static final int GeoKeyDirectoryTag

The code for a TIFF tag containing integer specifications for GeoTIFF tags. This is the primary GeoTIFF tag and provides an entry point for accessing other values stored in tags GeoDoubleParamsTag (34736) or GeoAsciiParamsTags (34737). A valid GeoTIFF specification will also include a GeoKeyDirectoryTag, but the other tags are optional (unless specifically referenced within the content of the GeoKeyDirectoryTag).

See Also:

Constant Field Values

GeoDoubleParamsTag

public static final int GeoDoubleParamsTag

The code for a TIFF tag containing floating point parameters (doubles) for the GeoTIFF specification

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Constant Field Values

GtModelTypeGeoKey

public static final int GtModelTypeGeoKey

Key code for the GtModelTypeGeoKey specification

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Constant Field Values

GeoCitationGeoKey

public static final int GeoCitationGeoKey

Key code for the GeoCitationGeoKey specification

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Constant Field Values

PCSCitationGeoKey

public static final int PCSCitationGeoKey

Key code for the PCSCitationGeoKey specification

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Constant Field Values

ProjLinearUnitsGeoKey

public static final int ProjLinearUnitsGeoKey

Key code for the ProjLinearUnitsGeoKey specification

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Constant Field Values

VerticalUnitsGeoKey

public static final int VerticalUnitsGeoKey

Key code for the VerticalLinearUnitsGeoKey specification

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Constant Field Values

LinearUnitCodeMeter

public static final int LinearUnitCodeMeter

Linear Unit Code for feet, from GeoTiff spec 6.3.1.3

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Constant Field Values

LinearUnitCodeFeet

public static final int LinearUnitCodeFeet

Linear Unit Code for feet, from GeoTiff spec 6.3.1.3

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Constant Field Values

LinearUnitCodeFeetUS

public static final int LinearUnitCodeFeetUS

Linear Unit Code for feet, from GeoTiff spec 6.3.1.3

See Also:

Constant Field Values

Constructor Detail

GeoTiffData

public GeoTiffData(List<GeoTiffKey> keyList,
                   double[] fpData,
                   char[] asciiData)

Method Detail

containsKey

public boolean containsKey(int keyCode)

Indicates whether the GeoTiffData collection contains an entry for the specified key code. This method does not indicate whether the specified code is a valid value, only whether it is available in the data set.

Parameters:

keyCode - an integer key code

Returns:

true if the collection includes an entry for the code, otherwise false.

getInteger

public int getInteger(int keyCode)
               throws IOException

Gets the single integer value associated with the GeoTIFF keycode.

Parameters:

keyCode - a valid GeoTIFF key

Returns:

a positive integer value in the range 0 to 65535 (the range of an unsigned short integer)

Throws:

IOException - in the event of a TIFF format exception or the key code is not found.

getDouble

public double[] getDouble(int keyCode)
                   throws IOException

Gets an array of one or more doubles containing the value or values associated with the specified key code.

Parameters:

keyCode - a valid GeoTIFF key

Returns:

a valid array

Throws:

IOException - in the event of a TIFF format exception

getString

public String getString(int keyCode)
                 throws IOException

Gets the single String value associated with the GeoTIFF keycode.

Parameters:

keyCode - a valid GeoTIFF key

Returns:

a positive integer value in the range 0 to 65535 (the range of an unsigned short integer)

Throws:

IOException - in the event of a TIFF format exception

getKeyList

public List<GeoTiffKey> getKeyList()

Gets a list of the keys defined by this GeoTiffData collection

Returns:

a safe copy of the key list from this collection.

usesGeographicCoordinates

public boolean usesGeographicCoordinates()

Indicates whether the GeoTIFF data specifies a geographic coordinate system

Returns:

true if geographic coordinates are used; otherwise, false.

usesProjectedCoordinates

public boolean usesProjectedCoordinates()

Indicates whether the GeoTIFF data specifies a projected coordinate system

Returns:

true if projected coordinates are used; otherwise, false.