The well-known ID of the spatial reference that you are projecting from.
The well-known text of the spatial reference that you are projecting from. This is ignored if fromWkid is also specified.
The well-known ID of the spatial reference that you are projecting to.
The well-known text of the spatial reference that you are projecting to. This is ignored if toWkid is also specified.
The well-known ID of the datum transform to use.
The well-known text of the datum transform to use. This is ignored if transformWkid is also specified.
Describes an object that represents a datum transform for projecting between different spatial references. A valid datum tranform requires a parameter of each type (transform, from, and to).