ArcObjects Library Reference (Geometry)  

UnitChangeTransformation CoClass

Creates a unit change transformation.

Product Availability

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

Description

The UnitChangeTransformation coclass implements a unit change method. It has no parameters but will convert the units in two different geographic coordinate systems (datums), for instance, between degrees and grads.

Extended Error Information

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

Interfaces Description
IClone (esriSystem) Provides access to members that control cloning of objects.
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)
ISpatialReferenceAuthority Provides access to the authority-related metadata for a spatial reference object.
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.
IUnitChangeTransformation indicator interface for a unit change geotransformation (units are obtained from the constituent gcss.
IXMLSerialize (esriSystem) Provides access to members that XML serialize and deserialize an object to/from XML.
IXMLVersionSupport (esriSystem) Provides access to members that help in serializing an object to different namespaces (versions).