ArcObjects Library Reference (Geometry)  

IProjectionGEN.GetDefaultParameters Method

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

[Visual Basic .NET]
Public Function GetDefaultParameters ( _
) As IParameter[]
[C#]
public IParameter[] GetDefaultParameters (
);
[C++]
HRESULT GetDefaultParameters(
  Array* parameters
);
[C++]

Parameters

parameters [out, retval]
  parameters is a parameter of type Array

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

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.

Aitoff
CentralMeridian

Albers
CentralMeridian
StandardParallel1
StandardParallel2
LatitudeOfOrigin

Azimuthal_Equidistant
CentralMeridian
LatitudeOfOrigin

Behrmann
CentralMeridian

Bonne
CentralMeridian
StandardParallel1

Cassini
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Craster_Parabolic
CentralMeridian

Cylindrical_Equal_Area
CentralMeridian
StandardParallel1

Double_Stereographic
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Eckert_I
CentralMeridian

Eckert_II
CentralMeridian

Eckert_III
CentralMeridian

Eckert_IV
CentralMeridian

Eckert_V
CentralMeridian

Eckert_VI
CentralMeridian

Equidistant_Conic
CentralMeridian
StandardParallel1
StandardParallel2
LatitudeOfOrigin

Equidistant_Cylindrical
CentralMeridian
StandardParallel1

Flat_Polar_Quartic
CentralMeridian

Gall_Stereographic
CentralMeridian

Gauss_Kruger
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Gnomonic
LongitudeOfCenter
LatitudeOfCenter

Hammer_Aitoff
CentralMeridian

Hotine_Oblique_Mercator_Azimuth_Center
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter

Hotine_Oblique_Mercator_Azimuth_Natural_Origin
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter

Hotine_Oblique_Mercator_Two_Point_Center
LatitudeOf1st
LatitudeOf2nd
ScaleFactor
LongitudeOf1st
LongitudeOf2nd
LatitudeOfCenter

Hotine_Oblique_Mercator_Two_Point_Natural_Origin
LatitudeOf1st
LatitudeOf2nd
ScaleFactor
LongitudeOf1st
LongitudeOf2nd
LatitudeOfCenter

Krovak
PseudoStandardParallel1
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter
XScaleFactor
YScaleFactor
Rotation

Lambert_Azimuthal_Equal_Area
CentralMeridian
LatitudeOfOrigin

Lambert_Conformal_Conic
CentralMeridian
StandardParallel1
StandardParallel2
ScaleFactor
LatitudeOfOrigin

Local
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter

Loximuthal
CentralMeridian
CentralParallel

Mercator
CentralMeridian
StandardParallel1

Miller_Cylindrical
CentralMeridian

Mollweide
CentralMeridian

New_Zealand_Map_Grid
LongitudeOfOrigin
LatitudeOfOrigin

Orthographic
LongitudeOfCenter
LatitudeOfCenter

Plate_Carree
CentralMeridian

Polyconic
CentralMeridian
LatitudeOfOrigin

Quartic_Authalic
CentralMeridian

Rectified_Skew_Orthomorphic_Center
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter
Rotation

Rectified_Skew_Orthomorphic_Natural_Origin
ScaleFactor
Azimuth
LongitudeOfCenter
LatitudeOfCenter
Rotation

Robinson
CentralMeridian

Robinson_ARC_INFO
CentralMeridian

Sinusoidal
CentralMeridian

Stereographic
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Stereographic_North_Pole
CentralMeridian
StandardParallel1

Stereographic_South_Pole
CentralMeridian
StandardParallel1

Times
CentralMeridian

Transverse_Mercator
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Transverse_Mercator_Complex
CentralMeridian
ScaleFactor
LatitudeOfOrigin

Two_Point_Equidistant
LatitudeOf1st
LatitudeOf2nd
LongitudeOf1st
LongitudeOf2nd

Van_der_Grinten_I
CentralMeridian

Vertical_Near_Side_Perspective
LongitudeOfCenter
LatitudeOfCenter
Height

Winkel_I
CentralMeridian
StandardParallel1

Winkel_II
CentralMeridian
StandardParallel1

Winkel_Tripel
CentralMeridian
StandardParallel1

[C#]

    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);
        }
    }

See Also

IProjectionGEN Interface

.NET Related Topics

Creating a custom projected coordinate system