Hi again! Is there any way to implement a user defined type of projection when using the idlgrview object. I am thinking of overloading the particular method. Since i cant look inside the object, i dont no the projection mechanism. I want to implement fisheye view and other projection models. I am able to project 3d points using arbitrary projection models. But instead of projecting points i want to make use of idl's grid-framework to project whole grid models. Regards