Package ucar.unidata.geoloc

Class Earth

java.lang.Object

ucar.unidata.geoloc.Earth

Direct Known Subclasses:

EarthEllipsoid

@Immutable
public class Earth
extends Object

Defines the shape of the earth ellipsoid.

Field Summary

Fields

Modifier and Type	Field	Description
static Earth	DEFAULT
static double	WGS84_EARTH_RADIUS_KM	Get canonical radius of the spherical earth in km from "WGS 84"
static double	WGS84_EARTH_RADIUS_METERS	Get canonical radius of the spherical earth in meters from "WGS 84"

Constructor Summary

Constructors

Constructor	Description
Earth()	Spherical earth with canonical radius.
Earth(double radius)	Assume a spherical cow, I mean earth.
Earth(double equatorRadius, double poleRadius, double reciprocalFlattening)	Create an ellipsoidal earth.
Earth(double equatorRadius, double poleRadius, double reciprocalFlattening, String name)	Create an ellipsoidal earth with a name.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
double	getEccentricity()	Get the Eccentricity .
double	getEccentricitySquared()	Get the Eccentricity squared.
double	getEquatorRadius()	Get the Equatorial Radius in meters.
double	getFlattening()	Get the Flattening.
double	getMajor()	Get the equatorial radius (semimajor axis) of the earth, in meters.
double	getMinor()	Get the polar radius (semiminor axis) of the earth, in meters.
String	getName()	Get the Name.
double	getPoleRadius()	Get the Polar Radius in meters.
int	hashCode()
boolean	isSpherical()	Is this a spherical earth?
String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT

public static final Earth DEFAULT

WGS84_EARTH_RADIUS_METERS

public static final double WGS84_EARTH_RADIUS_METERS

Get canonical radius of the spherical earth in meters from "WGS 84"

See Also:

Constant Field Values

WGS84_EARTH_RADIUS_KM

public static final double WGS84_EARTH_RADIUS_KM

Get canonical radius of the spherical earth in km from "WGS 84"

See Also:

Constant Field Values

Constructor Detail

Earth

public Earth()

Spherical earth with canonical radius.

Earth

public Earth(double radius)

Assume a spherical cow, I mean earth.

Parameters:

radius - radius of spherical earth.

Earth

public Earth(double equatorRadius,
             double poleRadius,
             double reciprocalFlattening)

Create an ellipsoidal earth. The reciprocalFlattening is used if not zero, else the poleRadius is used.

Parameters:

equatorRadius - equatorial radius (semimajor axis) in meters, must be specified

poleRadius - polar radius (semiminor axis) in meters

reciprocalFlattening - inverse flattening = 1/flattening = a / (a-b)

Earth

public Earth(double equatorRadius,
             double poleRadius,
             double reciprocalFlattening,
             String name)

Create an ellipsoidal earth with a name.

Parameters:

equatorRadius - equatorial radius (semimajor axis) in meters, must be specified

poleRadius - polar radius (semiminor axis) in meters; if reciprocalFlattening != 0 then this is ignored

reciprocalFlattening - inverse flattening = 1/flattening = a / (a-b); if 0 use the poleRadius to calculate

name - name of the Earth

Method Detail

isSpherical

public boolean isSpherical()

Is this a spherical earth?

getMajor

public double getMajor()

Get the equatorial radius (semimajor axis) of the earth, in meters.

getMinor

public double getMinor()

Get the polar radius (semiminor axis) of the earth, in meters.

getName

public String getName()

Get the Name.

getEccentricity

public double getEccentricity()

Get the Eccentricity .

getEccentricitySquared

public double getEccentricitySquared()

Get the Eccentricity squared.

getEquatorRadius

public double getEquatorRadius()

Get the Equatorial Radius in meters.

getPoleRadius

public double getPoleRadius()

Get the Polar Radius in meters.

getFlattening

public double getFlattening()

Get the Flattening.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object