Ellipsoid Class

Initializes a new instance of the Ellipsoid class.

public Ellipsoid(string name, double semiMajorAxis, double inverseFlattening)

Parameters

name string: The name of the ellipsoid.
semiMajorAxis double: The radius at the equator, in meters.
inverseFlattening double: The inverse of the flattening, a / (a - b), or 0 for a sphere.

Exceptions

ArgumentOutOfRangeException: semiMajorAxis is not a positive number, or inverseFlattening is not 0 or a number greater than 1.

Properties

Name	Description
Airy1830	Gets the ellipsoid Airy 1830, used by the OSGB36 datum of Great Britain.
Bessel1841	Gets the ellipsoid Bessel 1841, used by the DHDN datum of Germany.
Clarke1866	Gets the ellipsoid Clarke 1866, used by NAD27.
Clarke1880Ign	Gets the ellipsoid Clarke 1880 (IGN), used by the NTF datum of France.
Eccentricity	Gets the first eccentricity.
EccentricitySquared	Gets the square of the first eccentricity.
Flattening	Gets the flattening, `(a - b) / a`.
Grs80	Gets the ellipsoid GRS 1980, used by ETRS89, RGF93 and NAD83.
International1924	Gets the International 1924 (Hayford) ellipsoid, used by ED50.
InverseFlattening	Gets the inverse of the flattening, or 0 for a sphere.
Name	Gets the name of the ellipsoid.
SemiMajorAxis	Gets the radius at the equator, in meters.
SemiMinorAxis	Gets the radius at the poles, in meters.
Wgs84	Gets the ellipsoid of WGS 84, used by GPS devices, GeoJSON and web maps.

Airy1830

Gets the ellipsoid Airy 1830, used by the OSGB36 datum of Great Britain.

public static Ellipsoid Airy1830 { get; }

Property value

Bessel1841

Gets the ellipsoid Bessel 1841, used by the DHDN datum of Germany.

public static Ellipsoid Bessel1841 { get; }

Property value

Clarke1866

Gets the ellipsoid Clarke 1866, used by NAD27.

public static Ellipsoid Clarke1866 { get; }

Property value

Clarke1880Ign

Gets the ellipsoid Clarke 1880 (IGN), used by the NTF datum of France.

public static Ellipsoid Clarke1880Ign { get; }

Property value

Eccentricity

Gets the first eccentricity.

public double Eccentricity { get; }

Property value

EccentricitySquared

Gets the square of the first eccentricity.

public double EccentricitySquared { get; }

Property value

Flattening

Gets the flattening, (a - b) / a.

public double Flattening { get; }

Property value

Grs80

Gets the ellipsoid GRS 1980, used by ETRS89, RGF93 and NAD83.

public static Ellipsoid Grs80 { get; }

Property value

International1924

Gets the International 1924 (Hayford) ellipsoid, used by ED50.

public static Ellipsoid International1924 { get; }

Property value

InverseFlattening

Gets the inverse of the flattening, or 0 for a sphere.

public double InverseFlattening { get; }

Property value

Name

Gets the name of the ellipsoid.

public string Name { get; }

Property value

string

SemiMajorAxis

Gets the radius at the equator, in meters.

public double SemiMajorAxis { get; }

Property value

SemiMinorAxis

Gets the radius at the poles, in meters.

public double SemiMinorAxis { get; }

Property value

Wgs84

Gets the ellipsoid of WGS 84, used by GPS devices, GeoJSON and web maps.

public static Ellipsoid Wgs84 { get; }

Property value

Methods

Name	Description
ToString()	Returns a string that represents the current object.

ToString()