Package com.luciad.geodesy

Class TLcdGeoidGeodeticDatumFactory

java.lang.Object

com.luciad.geodesy.TLcdGeoidGeodeticDatumFactory

All Implemented Interfaces:

ILcdGeodeticDatumFactory

public class TLcdGeoidGeodeticDatumFactory
extends Object
implements ILcdGeodeticDatumFactory

Creates geodetic datums combining horizontal and vertical datums. The horizontal datums define ellipsoids, for interpreting geodetic coordinates. The vertical datums define non-zero geoid reference heights on top of these ellipsoids, for interpreting elevations and altitudes.

Since:

9.0

Field Summary

Fields

Modifier and Type	Field	Description
static final int	AHD	Constant used to create a geodetic datum for Australia combining the Geocentric Datum of Australia 1994 (GDA 94) and the Australian Height Datum (AHD).
static final int	CGVD2013	Constant used to create a geodetic datum for Canada combining the North American Datum 1983 Canadian Spatial Reference System (NAD 83 CSRS) and the Canadian Geodetic Vertical Datum of 2013 (CGVD2013).
static final int	CGVD28	Constant used to create a geodetic datum for Canada combining the North American Datum 1983 Canadian Spatial Reference System (NAD 83 CSRS) and the Canadian Geodetic Vertical Datum 1928 (CGVD 28).
static final int	EGM2008_GRID_TWO_AND_HALF_MINUTE	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 2008 (EGM 2008).
static final int	EGM84_GRID	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1984 (EGM 84).
static final int	EGM84_MODEL	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1984 (EGM 84).
static final int	EGM96_GRID_BICUBIC	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96).
static final int	EGM96_GRID_BILINEAR	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96).
static final int	EGM96_MODEL	Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96).
static final int	NAVD88_AL	Constant used to create a geodetic datum for the Territory of Alaska combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NAVD88_AS	Constant used to create a geodetic datum for the Territory of American Samoa combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NAVD88_GU	Constant used to create a geodetic datum for the Territory of Guam and the Northern Marianas Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NAVD88_HW	Constant used to create a geodetic datum for the Territory of the Hawaiian Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NAVD88_PR	Constant used to create a geodetic datum for the Territory of Puerto Rico and the Virgin Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NAVD88_US	Constant used to create a geodetic datum for the conterminous United States combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88).
static final int	NGVD29_US	Constant used to create a geodetic datum for the conterminous United States combining the North American Datum 1927 (NAD 27) and the National Geodetic Vertical Datum 1927 (NGVD 29).
static final int	RD_NAP	Constant used to create a geodetic datum based on the quasi-geoid model NLGEO2018 adapted to EPSG:28992.
static final int	SWEN08_RH2000	Constant used to create a geodetic datum based on the Swedish geoid model KTH08 adapted to SWEREF 99 and RH 2000.
static final int	SWEN08_RH70	Constant used to create a geodetic datum based on the Swedish geoid model KTH08 adapted to SWEREF 99 and RH 70.

Constructor Summary

Constructors

Constructor	Description
TLcdGeoidGeodeticDatumFactory()	Constructs a new geodetic datum factory.

Method Summary

Modifier and Type	Method	Description
ILcdGeodeticDatum	createGeodeticDatum(int aID)	Returns a TLcdGeodeticDatum for the specified identification code.
ILcdGeodeticDatum	createGeodeticDatum(String aPrefix, Properties aProperties)	Creates a ILcdGeodeticDatum from a Properties Object.

Methods inherited from class java.lang.Object

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

Field Details

EGM84_MODEL

public static final int EGM84_MODEL

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1984 (EGM 84). It computes geoid heights with the potential coefficient model EGM 84 and a set of spherical harmonic coefficients of a correction term, complete to degree and order 180. Its accuracy is 0.005 m, relative to the reference implementation of the model provided by the National Geospatial-Intelligence Agency (NGA), at the expense of being computationally intensive.

The readable name of the geodetic datum is "WGS84 + EGM84 (Model)".

See Also:

• Constant Field Values

EGM84_GRID

public static final int EGM84_GRID

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1984 (EGM 84). It computes geoid heights with a 30'x30' spaced grid in combination with a bilinear interpolation algorithm. Its accuracy is 0.015 m, relative to the reference implementation of the interpolation algorithm provided by the National Geospatial-Intelligence Agency (NGA).

The readable name of the geodetic datum is "WGS84 + EGM84 (Grid)", "WGS84 + EGM84" or "EGM84".

See Also:

• Constant Field Values

EGM96_MODEL

public static final int EGM96_MODEL

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96). It computes geoid heights with the potential coefficient model EGM 84 and a set of spherical harmonic coefficients of a correction term, complete to degree and order 360. Its accuracy is 0.001 m, relative to the reference implementation of the model provided by the National Geospatial-Intelligence Agency (NGA), at the expense of being computationally intensive.

The readable name of the geodetic datum is "WGS84 + EGM96 (Model)".

See Also:

• Constant Field Values

EGM96_GRID_BILINEAR

public static final int EGM96_GRID_BILINEAR

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96). It computes geoid heights based on a 15'x15' spaced grid, with a bilinear interpolation algorithm. Its worst-case accuracy is 1.25 m, relative to the reference implementation of the interpolation algorithm provided by the National Geospatial-Intelligence Agency (NGA). In practice, its accuracy is better than 0.45 m in 99%, and better than 0.20 m in 95% of the continental regions.

The readable name of the geodetic datum is "WGS84 + EGM96 (Grid bilinear)", "WGS84 + EGM96" or "EGM96".

See Also:

• Constant Field Values

EGM96_GRID_BICUBIC

public static final int EGM96_GRID_BICUBIC

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 1996 (EGM 96). It computes geoid heights based on a 15'x15' spaced grid, with a bicubic interpolation algorithm. Its worst-case accuracy is 0.21 m, relative to the reference implementation of the interpolation algorithm provided by the National Geospatial-Intelligence Agency (NGA). In practice, its accuracy is better than 0.08 m in 99%, and better than 0.04 m in 95% of the continental regions.

The readable name of the geodetic datum is "WGS84 + EGM96 (Grid bicubic)".

See Also:

• Constant Field Values

NAVD88_US

public static final int NAVD88_US

Constant used to create a geodetic datum for the conterminous United States combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (Conterminous United States)", "NAD83 + NAVD88" or "NAVD88".

See Also:

• Constant Field Values

NAVD88_AL

public static final int NAVD88_AL

Constant used to create a geodetic datum for the Territory of Alaska combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (Alaska)".

See Also:

• Constant Field Values

NAVD88_HW

public static final int NAVD88_HW

Constant used to create a geodetic datum for the Territory of the Hawaiian Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (Hawaiian Islands)".

See Also:

• Constant Field Values

NAVD88_PR

public static final int NAVD88_PR

Constant used to create a geodetic datum for the Territory of Puerto Rico and the Virgin Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (Puerto Rico and Virgin Islands)".

See Also:

• Constant Field Values

NAVD88_GU

public static final int NAVD88_GU

Constant used to create a geodetic datum for the Territory of Guam and the Northern Marianas Islands combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (Guam and Northern Marianas Islands)".

See Also:

• Constant Field Values

NAVD88_AS

public static final int NAVD88_AS

Constant used to create a geodetic datum for the Territory of American Samoa combining the North American Datum 1983 (NAD 83) and the North American Vertical Datum 1988 (NAVD 88). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NAVD88 (American Samoa)".

See Also:

• Constant Field Values

NGVD29_US

public static final int NGVD29_US

Constant used to create a geodetic datum for the conterminous United States combining the North American Datum 1927 (NAD 27) and the National Geodetic Vertical Datum 1927 (NGVD 29). It computes geoid heights based on a 1'x1' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.01 m, relative to the reference implementation of the interpolation algorithm provided by the National Geodetic Survey (NGS).

The readable name of the geodetic datum is "NAD83 + NGVD29 (Conterminous United States)", "NAD83 + NGVD29" or "NGVD29".

See Also:

• Constant Field Values

AHD

public static final int AHD

Constant used to create a geodetic datum for Australia combining the Geocentric Datum of Australia 1994 (GDA 94) and the Australian Height Datum (AHD). It computes geoid heights based on a 2'x2' spaced grid, with a bilinear interpolation algorithm.

The readable name of the geodetic datum is "ITRF97 + AHD".

See Also:

• Constant Field Values

CGVD28

public static final int CGVD28

Constant used to create a geodetic datum for Canada combining the North American Datum 1983 Canadian Spatial Reference System (NAD 83 CSRS) and the Canadian Geodetic Vertical Datum 1928 (CGVD 28). It computes geoid heights based on a 2'x2' spaced grid, with a bilinear interpolation algorithm. Its accuracy is 0.02 m, relative to the reference implementation of the interpolation algorithm provided by the Geodetic Survey Division (GSD).

The readable name of the geodetic datum is "NAD83 (CSRS) + CGVD28".

See Also:

• Constant Field Values

SWEN08_RH2000

public static final int SWEN08_RH2000

Constant used to create a geodetic datum based on the Swedish geoid model KTH08 adapted to SWEREF 99 and RH 2000. Includes corrections for the land uplift and residual interpolation. It computes geoid heights based on a 0.04° x 0.02° spaced grid, with a linear interpolation algorithm.

The readable name of the geodetic datum is "SWEN08_RH2000".

See Also:

• Constant Field Values

SWEN08_RH70

public static final int SWEN08_RH70

Constant used to create a geodetic datum based on the Swedish geoid model KTH08 adapted to SWEREF 99 and RH 70. Includes corrections for the land uplift and residual interpolation. It computes geoid heights based on a 0.04° x 0.02° spaced grid, with a linear interpolation algorithm.

The readable name of the geodetic datum is "SWEN08_RH70".

See Also:

• Constant Field Values

EGM2008_GRID_TWO_AND_HALF_MINUTE

public static final int EGM2008_GRID_TWO_AND_HALF_MINUTE

Constant used to create a geodetic datum combining the World Geodetic System 1984 (WGS 84) and the Earth Gravitational Model 2008 (EGM 2008). It computes geoid heights based on a 2.5'x2.5' spaced grid, with an interpolation algorithm. Its worst-case accuracy is 1 cm, relative to the reference implementation of the harmonic synthesis algorithm of the National Geospatial-Intelligence Agency (NGA).

The readable name of the geodetic datum is "WGS84 + EGM2008 (Grid 2.5\' by 2.5\')".

Since:

2017.1

See Also:

• Constant Field Values

RD_NAP

public static final int RD_NAP

Constant used to create a geodetic datum based on the quasi-geoid model NLGEO2018 adapted to EPSG:28992. It computes geoid heights based on a 0.0125° x 0.02° spaced grid, with a linear interpolation algorithm.

The readable name of the geodetic datum is "Normaal Amsterdams Peil".

Since:

2021.0

See Also:

• Constant Field Values

CGVD2013

public static final int CGVD2013

Constant used to create a geodetic datum for Canada combining the North American Datum 1983 Canadian Spatial Reference System (NAD 83 CSRS) and the Canadian Geodetic Vertical Datum of 2013 (CGVD2013). The vertical datum is realized by CGG2013a: the Canadian gravimetric geoid model of 2013 – Version A.

It computes geoid heights based on a 2'x2' spaced grid, with a bilinear interpolation algorithm.

The readable name of the geodetic datum is "NAD83 (CSRS) + CGVD2013".

Since:

2022.1

See Also:

• Constant Field Values

Constructor Details

TLcdGeoidGeodeticDatumFactory

public TLcdGeoidGeodeticDatumFactory()

Constructs a new geodetic datum factory.

Method Details

createGeodeticDatum

public ILcdGeodeticDatum createGeodeticDatum(String aPrefix,
 Properties aProperties)
                                      throws IllegalArgumentException

Creates a ILcdGeodeticDatum from a Properties Object.

This implementation will look for the key "<aPrefix>"TLcdGeoidGeodeticDatumFactory.geodeticDatumName"". The property should hold the name or the ID of the geodetic datum which should be created. If no geodetic datum can be created, null shall be returned.

Specified by:

createGeodeticDatum in interface ILcdGeodeticDatumFactory

Parameters:

aPrefix - prefix for property names.

aProperties - Properties object from which to derive the geodetic datum.

Returns:

ILcdGeodeticDatum associated to the combination aPrefix and aProperties.

Throws:

IllegalArgumentException - if no geodetic datum can be associated to the combination aPrefix and aProperties.

createGeodeticDatum

public ILcdGeodeticDatum createGeodeticDatum(int aID)

Returns a TLcdGeodeticDatum for the specified identification code. The supported identification codes are defined as constants in this class. If no geodetic datum can be created, null shall be returned.

Parameters:

aID - the identification code. one of the constants.

Returns:

a TLcdGeodeticDatum for the specified identification code.