java.lang.Object
- org.meteoinfo.projection.proj4j.datum.Ellipsoid

所有已实现的接口:

java.lang.Cloneable
```
public class Ellipsoid
extends java.lang.Object
implements java.lang.Cloneable
```
A class representing a geographic reference ellipsoid (or more correctly an oblate spheroid), used to model the shape of the surface of the earth.
An oblate spheroid is a geometric surface formed by the rotation of an ellipse about its minor axis. In geodesy this is used as a convenient approximation to the geoid, the true shape of the earth's surface.
An ellipsoid is defined by the following parameters:
- a, the equatorial radius or semi-major axis (see getA())
and one of:
- b, the polar radius or semi-minor axis (see getB())
- f, the reciprocal flattening (f = (a - b) / a)
In order to be used as a model of the geoid, the exact positioning of an ellipsoid relative to the geoid surface needs to be specified. This is provided by means of a geodetic Datum.
Notable ellipsoids in common use include CLARKE_1866, GRS80, and WGS84.
另请参阅:

Datum

字段概要

字段
修饰符和类型	字段	说明
`static Ellipsoid`	`AIRY`
`static Ellipsoid`	`ANDRAE`
`static Ellipsoid`	`APL4_9`
`static Ellipsoid`	`AUST_SA`
`static Ellipsoid`	`AUSTRALIAN`
`static Ellipsoid`	`BESS_NAM`
`static Ellipsoid`	`BESSEL`
`static Ellipsoid`	`CLARKE_1866`
`static Ellipsoid`	`CLARKE_1880`
`static Ellipsoid`	`CPM`
`static Ellipsoid`	`DELMBR`
`double`	`eccentricity`
`double`	`eccentricity2`
`static Ellipsoid[]`	`ellipsoids`
`static Ellipsoid`	`ENGELIS`
`double`	`equatorRadius`
`static Ellipsoid`	`EVEREST`
`static Ellipsoid`	`EVRST48`
`static Ellipsoid`	`EVRST56`
`static Ellipsoid`	`EVRTS69`
`static Ellipsoid`	`EVRTSTSS`
`static Ellipsoid`	`FRSCH60`
`static Ellipsoid`	`FSCHR68`
`static Ellipsoid`	`FSRCH60M`
`static Ellipsoid`	`GRS67`
`static Ellipsoid`	`GRS80`
`static Ellipsoid`	`HELMERT`
`static Ellipsoid`	`HOUGH`
`static Ellipsoid`	`IAU76`
`static Ellipsoid`	`INTERNATIONAL`
`static Ellipsoid`	`INTERNATIONAL_1967`
`static Ellipsoid`	`INTL`
`static Ellipsoid`	`KAULA`
`static Ellipsoid`	`KRASSOVSKY`
`static Ellipsoid`	`LERCH`
`static Ellipsoid`	`MERIT`
`static Ellipsoid`	`MOD_AIRY`
`static Ellipsoid`	`MPRTS`
`static Ellipsoid`	`NAD27`
`static Ellipsoid`	`NAD83`
`java.lang.String`	`name`
`static Ellipsoid`	`NWL9D`
`static Ellipsoid`	`PLESSIS`
`double`	`poleRadius`
`static Ellipsoid`	`SEASIA`
`static Ellipsoid`	`SGS85`
`java.lang.String`	`shortName`
`static Ellipsoid`	`SPHERE`
`static Ellipsoid`	`WALBECK`
`static Ellipsoid`	`WGS60`
`static Ellipsoid`	`WGS66`
`static Ellipsoid`	`WGS72`
`static Ellipsoid`	`WGS84`

构造器概要

构造器
构造器	说明
`Ellipsoid()`
`Ellipsoid(java.lang.String shortName, double equatorRadius, double poleRadius, double reciprocalFlattening, java.lang.String name)`	Creates a new Ellipsoid.
`Ellipsoid(java.lang.String shortName, double equatorRadius, double eccentricity2, java.lang.String name)`

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`java.lang.Object`	`clone()`
`double`	`getA()`
`double`	`getB()`
`double`	`getEccentricitySquared()`
`double`	`getEquatorRadius()`
`double`	`getInverseFlattening()`	Calculates the inverse of the flattening factor, commonly saved to ESRI projections, or else provided as the "rf" parameter for Proj4 strings.
`java.lang.String`	`getName()`
`java.lang.String`	`getShortName()`
`boolean`	`isEqual(Ellipsoid e)`
`boolean`	`isEqual(Ellipsoid e, double e2Tolerance)`
`void`	`readEsriString(java.lang.String esriString)`	Reads the ESRI string to define the spheroid, which controls how flattened the earth's radius is
`void`	`setEccentricitySquared(double eccentricity2)`
`void`	`setEquatorRadius(double equatorRadius)`
`void`	`setInverseFlattening(double value)`	Sets the value by using the current semi-major axis (Equatorial Radius) in order to calculate the semi-minor axis (Polar Radius).
`void`	`setName(java.lang.String name)`
`void`	`setShortName(java.lang.String shortName)`
`java.lang.String`	`toEsriString()`	To Esri string of ellipsoid part
`java.lang.String`	`toString()`

从类继承的方法 java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

字段详细资料

name
```
public java.lang.String name
```

shortName
```
public java.lang.String shortName
```

equatorRadius
```
public double equatorRadius
```

poleRadius
```
public double poleRadius
```

eccentricity
```
public double eccentricity
```

eccentricity2
```
public double eccentricity2
```

INTERNATIONAL

public static final Ellipsoid INTERNATIONAL

BESSEL
```
public static final Ellipsoid BESSEL
```

CLARKE_1866

public static final Ellipsoid CLARKE_1866

CLARKE_1880

public static final Ellipsoid CLARKE_1880

AIRY
```
public static final Ellipsoid AIRY
```

WGS60
```
public static final Ellipsoid WGS60
```

WGS66
```
public static final Ellipsoid WGS66
```

WGS72
```
public static final Ellipsoid WGS72
```

WGS84
```
public static final Ellipsoid WGS84
```

KRASSOVSKY

public static final Ellipsoid KRASSOVSKY

EVEREST
```
public static final Ellipsoid EVEREST
```

INTERNATIONAL_1967

public static final Ellipsoid INTERNATIONAL_1967

GRS80
```
public static final Ellipsoid GRS80
```

AUSTRALIAN

public static final Ellipsoid AUSTRALIAN

MERIT
```
public static final Ellipsoid MERIT
```

SGS85
```
public static final Ellipsoid SGS85
```

IAU76
```
public static final Ellipsoid IAU76
```

APL4_9
```
public static final Ellipsoid APL4_9
```

NWL9D
```
public static final Ellipsoid NWL9D
```

MOD_AIRY
```
public static final Ellipsoid MOD_AIRY
```

ANDRAE
```
public static final Ellipsoid ANDRAE
```

AUST_SA
```
public static final Ellipsoid AUST_SA
```

GRS67
```
public static final Ellipsoid GRS67
```

BESS_NAM
```
public static final Ellipsoid BESS_NAM
```

CPM
```
public static final Ellipsoid CPM
```

DELMBR
```
public static final Ellipsoid DELMBR
```

ENGELIS
```
public static final Ellipsoid ENGELIS
```

EVRST48
```
public static final Ellipsoid EVRST48
```

EVRST56
```
public static final Ellipsoid EVRST56
```

EVRTS69
```
public static final Ellipsoid EVRTS69
```

EVRTSTSS
```
public static final Ellipsoid EVRTSTSS
```

FRSCH60
```
public static final Ellipsoid FRSCH60
```

FSRCH60M
```
public static final Ellipsoid FSRCH60M
```

FSCHR68
```
public static final Ellipsoid FSCHR68
```

HELMERT
```
public static final Ellipsoid HELMERT
```

HOUGH
```
public static final Ellipsoid HOUGH
```

INTL
```
public static final Ellipsoid INTL
```

KAULA
```
public static final Ellipsoid KAULA
```

LERCH
```
public static final Ellipsoid LERCH
```

MPRTS
```
public static final Ellipsoid MPRTS
```

PLESSIS
```
public static final Ellipsoid PLESSIS
```

SEASIA
```
public static final Ellipsoid SEASIA
```

WALBECK
```
public static final Ellipsoid WALBECK
```

NAD27
```
public static final Ellipsoid NAD27
```

NAD83
```
public static final Ellipsoid NAD83
```

SPHERE
```
public static final Ellipsoid SPHERE
```

ellipsoids

public static final Ellipsoid[] ellipsoids

构造器详细资料

Ellipsoid
```
public Ellipsoid()
```

Ellipsoid

public Ellipsoid(java.lang.String shortName,
                 double equatorRadius,
                 double poleRadius,
                 double reciprocalFlattening,
                 java.lang.String name)

Creates a new Ellipsoid. One of of poleRadius or reciprocalFlattening must be specified, the other must be zero

Ellipsoid

public Ellipsoid(java.lang.String shortName,
                 double equatorRadius,
                 double eccentricity2,
                 java.lang.String name)

方法详细资料
- clone
```
public java.lang.Object clone()
```
  覆盖:
  
  clone 在类中 java.lang.Object
- setName
```
public void setName(java.lang.String name)
```
- getName
```
public java.lang.String getName()
```
- setShortName
```
public void setShortName(java.lang.String shortName)
```
- getShortName
```
public java.lang.String getShortName()
```
- setEquatorRadius
```
public void setEquatorRadius(double equatorRadius)
```
- getEquatorRadius
```
public double getEquatorRadius()
```
- getA
```
public double getA()
```
- getB
```
public double getB()
```
- setEccentricitySquared
```
public void setEccentricitySquared(double eccentricity2)
```
- getEccentricitySquared
```
public double getEccentricitySquared()
```
- isEqual
```
public boolean isEqual(Ellipsoid e)
```
- isEqual
```
public boolean isEqual(Ellipsoid e,
                       double e2Tolerance)
```
- toString
```
public java.lang.String toString()
```
  覆盖:
  
  toString 在类中 java.lang.Object
- readEsriString
```
public void readEsriString(java.lang.String esriString)
```
  Reads the ESRI string to define the spheroid, which controls how flattened the earth's radius is
  
  参数:
  
  esriString -
- setInverseFlattening
```
public void setInverseFlattening(double value)
```
  Sets the value by using the current semi-major axis (Equatorial Radius) in order to calculate the semi-minor axis (Polar Radius).
  
  参数:
  
  value - Value
- getInverseFlattening
```
public double getInverseFlattening()
```
  Calculates the inverse of the flattening factor, commonly saved to ESRI projections, or else provided as the "rf" parameter for Proj4 strings. This is simply calculated as a / (a - b) where a is the semi-major axis and b is the semi-minor axis.
  
  返回:
  
  Inverse flatting
- toEsriString
```
public java.lang.String toEsriString()
```
  To Esri string of ellipsoid part
  
  返回:
  
  Esri string of ellipsoid part

类 Ellipsoid

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

name

shortName

equatorRadius

poleRadius

eccentricity

eccentricity2

INTERNATIONAL

BESSEL

CLARKE_1866

CLARKE_1880

AIRY

WGS60

WGS66

WGS72

WGS84

KRASSOVSKY

EVEREST

INTERNATIONAL_1967

GRS80

AUSTRALIAN

MERIT

SGS85

IAU76

APL4_9

NWL9D

MOD_AIRY

ANDRAE

AUST_SA

GRS67

BESS_NAM

CPM

DELMBR

ENGELIS

EVRST48

EVRST56

EVRTS69

EVRTSTSS

FRSCH60

FSRCH60M

FSCHR68

HELMERT

HOUGH

INTL

KAULA

LERCH

MPRTS

PLESSIS

SEASIA

WALBECK

NAD27

NAD83

SPHERE

ellipsoids

构造器详细资料

Ellipsoid

Ellipsoid

Ellipsoid

方法详细资料

clone

setName

getName

setShortName

getShortName

setEquatorRadius

getEquatorRadius

getA

getB

setEccentricitySquared

getEccentricitySquared

isEqual

isEqual

toString

readEsriString

setInverseFlattening