IProjectionGEN Interface

OLE compatibility for providing access to members that control the properties of all map projections.

Members

	Name	Description
	Abbreviation	The abbreviated name of this spatial reference component.
	Alias	The alias of this spatial reference component.
	Classification	The classification of a map projection.
	FactoryCode	The factory code (WKID) of the spatial reference.
	GetDefaultParameters	Safearray wrapper for returning the set of default parameters needed for this projection.
	Name	The name of this spatial reference component.
	Remarks	The comment string of this spatial reference component.
	Usage	The usage notes of a map projection.

IProjectionGEN.Classification Property

The classification of a map projection.

Public ReadOnly Property Classification As String

public string Classification {get;}

IProjectionGEN.GetDefaultParameters Method

Safearray wrapper for returning the set of default parameters needed for this projection.

Public Function GetDefaultParameters ( _
) As IParameter[]

public IParameter[] GetDefaultParameters (
);

Description

Each map projection has a particular set of parameters that it expects. Use GetDefaultParameters to return a list of the parameters. Every map projection supports FalseEasting and FalseNorthing. The other parameters are listed below.

AitoffCentralMeridian

AlbersCentralMeridianStandardParallel1StandardParallel2LatitudeOfOrigin

Azimuthal_EquidistantCentralMeridianLatitudeOfOrigin

BehrmannCentralMeridian

BonneCentralMeridianStandardParallel1

CassiniCentralMeridianScaleFactorLatitudeOfOrigin

Craster_ParabolicCentralMeridian

Cylindrical_Equal_AreaCentralMeridianStandardParallel1

Double_StereographicCentralMeridianScaleFactorLatitudeOfOrigin

Eckert_ICentralMeridian

Eckert_IICentralMeridian

Eckert_IIICentralMeridian

Eckert_IVCentralMeridian

Eckert_VCentralMeridian

Eckert_VICentralMeridian

Equidistant_ConicCentralMeridianStandardParallel1StandardParallel2LatitudeOfOrigin

Equidistant_CylindricalCentralMeridianStandardParallel1

Flat_Polar_QuarticCentralMeridian

Gall_StereographicCentralMeridian

Gauss_KrugerCentralMeridianScaleFactorLatitudeOfOrigin

GnomonicLongitudeOfCenterLatitudeOfCenter

Hammer_AitoffCentralMeridian

Hotine_Oblique_Mercator_Azimuth_CenterScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenter

Hotine_Oblique_Mercator_Azimuth_Natural_OriginScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenter

Hotine_Oblique_Mercator_Two_Point_CenterLatitudeOf1stLatitudeOf2ndScaleFactorLongitudeOf1stLongitudeOf2ndLatitudeOfCenter

Hotine_Oblique_Mercator_Two_Point_Natural_OriginLatitudeOf1stLatitudeOf2ndScaleFactorLongitudeOf1stLongitudeOf2ndLatitudeOfCenter

KrovakPseudoStandardParallel1ScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenterXScaleFactorYScaleFactorRotation

Lambert_Azimuthal_Equal_AreaCentralMeridianLatitudeOfOrigin

Lambert_Conformal_ConicCentralMeridianStandardParallel1StandardParallel2ScaleFactorLatitudeOfOrigin

LocalScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenter

LoximuthalCentralMeridianCentralParallel

MercatorCentralMeridianStandardParallel1

Miller_CylindricalCentralMeridian

MollweideCentralMeridian

New_Zealand_Map_GridLongitudeOfOriginLatitudeOfOrigin

OrthographicLongitudeOfCenterLatitudeOfCenter

Plate_CarreeCentralMeridian

PolyconicCentralMeridianLatitudeOfOrigin

Quartic_AuthalicCentralMeridian

Rectified_Skew_Orthomorphic_CenterScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenterRotation

Rectified_Skew_Orthomorphic_Natural_OriginScaleFactorAzimuthLongitudeOfCenterLatitudeOfCenterRotation

RobinsonCentralMeridian

Robinson_ARC_INFOCentralMeridian

SinusoidalCentralMeridian

StereographicCentralMeridianScaleFactorLatitudeOfOrigin

Stereographic_North_PoleCentralMeridianStandardParallel1

Stereographic_South_PoleCentralMeridianStandardParallel1

TimesCentralMeridian

Transverse_MercatorCentralMeridianScaleFactorLatitudeOfOrigin

Transverse_Mercator_ComplexCentralMeridianScaleFactorLatitudeOfOrigin

Two_Point_EquidistantLatitudeOf1stLatitudeOf2ndLongitudeOf1stLongitudeOf2nd

Van_der_Grinten_ICentralMeridian

Vertical_Near_Side_PerspectiveLongitudeOfCenterLatitudeOfCenterHeight

Winkel_ICentralMeridianStandardParallel1

Winkel_IICentralMeridianStandardParallel1

Winkel_TripelCentralMeridianStandardParallel1

private void PrintProjectionParameters()

    {

        // use activator class with SpatialReferenceEnvironment singleton

        Type factoryType = Type.GetTypeFromProgID("esriGeometry.SpatialReferenceEnvironment");

        System.Object obj = Activator.CreateInstance(factoryType);

        ISpatialReferenceFactory spatialReferenceFactory = obj as ISpatialReferenceFactory;

        //IProjection does not work under .NET so use IProjectionGEN

        IProjectionGEN projection = spatialReferenceFactory.CreateProjection((int)esriSRProjectionType.esriSRProjection_Albers) as IProjectionGEN;

        IParameter[] paramters = projection.GetDefaultParameters();

        //Return Albers parameters

        for (int i = 0; i < paramters.Length; i++)

        {

            System.Windows.Forms.MessageBox.Show(paramters[i].Name);

        }

    }

IProjectionGEN.Usage Property

The usage notes of a map projection.

Public ReadOnly Property Usage As String

public string Usage {get;}

Inherited Interfaces

Interfaces	Description
ISpatialReferenceInfo	Provides access to members that control the properties common to all components of a spatial reference system.

Classes that implement IProjectionGEN

Classes	Description
Projection	Creates a map projection.