IRPCXform Interface

Provides access to members that control a RPC transform.

Members

	Name	Description
	DefineFromCoefficients	Defines a RPC transform from 90 coefficients.
	Domains	The domains in output space.
	ForwardXform	The forward transformation from native to GCS WGS84.
	GetCoefficients	Gets the rational polynomial coefficients.
	IsIdentity	Indicates if this geodata transform is an identity transform.
	PutCoefficients	Puts the rational polynomial coefficients.
	QueryCoefficients	Queries the rational polynomial coefficients.
	SpatialReference	The output spatial reference after applying this transform.
	Transform	Transforms a set of points in a given direction.
	TransformCellsize	Transforms a cellsize in a given direction.
	TransformExtent	Transforms an extent in a given direction.
	TransformPoints	Transforms a point collection in a given direction

IRPCXform.DefineFromCoefficients Method

Defines a RPC transform from 90 coefficients.

Public Sub DefineFromCoefficients ( _
    ByRef pRPC As Object _
)

public void DefineFromCoefficients (
    ref object pRPC
);

Description

The argument is a variant type with 92 RPC parameters. This method is easy to use in VB. For C++ type of programming, use PutCoefficients method.

IRPCXform.ForwardXform Property

The forward transformation from native to GCS WGS84.

Public Property ForwardXform As IGeodataXform

public IGeodataXform ForwardXform {get; set;}

IRPCXform.GetCoefficients Method

Gets the rational polynomial coefficients.

Public Function GetCoefficients ( _
) As Object

public object GetCoefficients (
);

Remarks

The return is a variant type with 92 RPC parameters. This method is for VB users. For C++ type of programming, use QueryCoefficients method.

IRPCXform.PutCoefficients Method

Puts the rational polynomial coefficients.

Public Sub PutCoefficients ( _
    ByRef RPC As Double _
)

public void PutCoefficients (
    ref double RPC
);

Remarks

Set RPC coefficient, used for C++ type of programming.

IRPCXform.QueryCoefficients Method

Queries the rational polynomial coefficients.

Public Sub QueryCoefficients ( _
    ByRef RPC As Double _
)

public void QueryCoefficients (
    ref double RPC
);

Remarks

Get RPC coefficients (92 parameters), used for C++ type of programming. For VB users, GetCoefficients can be used.

Inherited Interfaces

Interfaces	Description
IGeodataXform	Provides access to members that control geodata transformation.

Classes that implement IRPCXform

Classes	Description
RPCXform	A Rational Polynomial Coefficient (RPC) transform class.

Remarks

The IRPCXform interface is used to create a RPCXform object.

The PPC parameters only define a reverse transformation. To create a RPCXform object to work with raster data, the forward transformation must also be set.