ISpheroidEdit Interface

Provides access to members that control the properties of a spheroid.

Members

	Name	Description
	Define	Defines the properties of a spheroid.
	DefineEx	Defines the properties of a spheroid.

ISpheroidEdit.Define Method

Defines the properties of a spheroid.

Public Sub Define ( _
    [ByRef Name As Object], _
    [ByRef Alias As Object], _
    [ByRef Abbreviation As Object], _
    [ByRef Remarks As Object], _
    [ByRef majorAxis As Object], _
    [ByRef Flattening As Object] _
)

public void Define (
    ref object Name,
    ref object Alias,
    ref object Abbreviation,
    ref object Remarks,
    ref object majorAxis,
    ref object Flattening
);

Description

The majorAxis parameter represents the semimajor axis. For example, the semimajor axis of the WGS 1984 spheroid is 6378137.0 meters. The flattening value is a small number, such as 0.003352811 (WGS 1984). Often the inverse flattening value is used instead, 298.257223563, and that is what is reported in a well-known text (WKT) version of spheroid. The Define method expects the true flattening value.

public ISpheroid DefineSpheroid()

    {            ISpheroid spheroid = new SpheroidClass();

        //cast interface to ISpheroidEdit             

        ISpheroidEdit spheroidEdit = spheroid as ISpheroidEdit;            

        //Define the properties of the spheroid             

        object name = "GRS_1980";            

        object alias = "GRS_1980";            

        object abbreviation = "GRS80";            

        object remarks = "Thespheroid is GRS_1980";            

        object majorAxis = 6378137; ;            

        object flattening = 1 / 298.257222101;            

        spheroidEdit.Define(ref name,                                

            ref alias,                                

            ref abbreviation,                                

            ref remarks,                                

            ref majorAxis,                                

            ref flattening                                

            );            

        return spheroidEdit as ISpheroid;        

    }

ISpheroidEdit.DefineEx Method

Defines the properties of a spheroid.

Public Sub DefineEx ( _
    ByVal Name As String, _
    ByVal Alias As String, _
    ByVal Abbreviation As String, _
    ByVal Remarks As String, _
    ByRef majorAxis As Double, _
    ByRef Flattening As Double _
)

public void DefineEx (
    string Name,
    string Alias,
    string Abbreviation,
    string Remarks,
    ref double majorAxis,
    ref double Flattening
);

Description

The majorAxis parameter represents the semimajor axis. For example, the semimajor axis of the WGS 1984 spheroid is 6378137.0 meters. The flattening value is a small number, such as 0.003352811 (WGS 1984). Often the inverse flattening value is used instead, 298.257223563, and that is what is reported in a well-known text (WKT) version of spheroid. The Define method expects the true flattening value.

Classes that implement ISpheroidEdit

Classes	Description
Spheroid	Creates a spheroid.