GS⁺ 2D Surface Map

GS⁺ produces 2D surface maps in addition to 3D maps.   The lower right Mouse Location panel reports the location of the mouse when it is moved over the image.   Zooming is performed by setting a Mouse Action and outlining part the image with the mouse. The Edit Graph button allows the projection to be changed to 3D, axes to be rescaled, labels and backgrounds to be changed, and titles added.