Public Function New( _
   ByVal in_dataset As Object, _
   ByVal coor_system As Object _
)

Visual Basic (Usage)	Copy Code
Dim in_dataset As Object Dim coor_system As Object   Dim instance As DefineProjection(in_dataset, coor_system)

public DefineProjection( 
   object in_dataset,
   object coor_system
)

Parameters

in_dataset

Dataset or feature class whose projection is to be defined. (In, Required)

coor_system

Valid values are a file with a .prj extension (.prj files shipped with ArcGIS are available at the ArcGIS installation directory in the Coordinate System folder) or a string representation of a coordinate system. This string representation can be generated by adding a coordinate system variable to ModelBuilder, setting the variable's value as desired, then exporting the model to a Python script. The string can then be copied from the Python script. (In, Required)

Reference