EDN: ESRI Developer Network
Creates a Coordinate Frame transformation.
A coordinate frame transformation is a seven parameter geographic (datum) transformation. The seven parameters are three translations in meters, three rotations in arc seconds, and a scale factor in parts per million.
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
| Interfaces | Description |
|---|---|
| IClone (esriSystem) | Provides access to members that control cloning of objects. |
| ICoordinateFrameTransformation | Provides access to members that control the 3D frame transformation with rotation, translation and scaling. |
| IGeoTransformation | Provides access to members that define a geographic (datum) transformation. |
| IPersist | Defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. IPersist is the base interface for three other interfaces: IPersistStorage, IPersistStream, and IPersistFile. |
| IPersistStream (esriSystem) | |
| ISupportErrorInfo | Indicates whether a specific interface can return Automation error objects. |
| ITransformation | Provides access to members that apply a function (or its inverse) to a set of points or measures. The suffix of each method indicates the type of parameters operated on. |
| ITransformationGEN | Provides access to members that apply a function (or its inverse) to a set of points or measures. The suffix of each method indicates the type of parameters operated on. ITransformationGEN is generic version of ITransformation. |
The position vector transformation is the same method but with rotations defined in the opposite direction. Make sure you know which method to use. If you change the signs of the rotation values, you can use the other method and get the same results.
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