Syntax:
set surface
set nosurface
show surface
The surface is drawn with the style specifed by with, or else the appropriate style, data or function.
Whenever set nosurface is issued, splot will not draw points or lines corresponding to the function or data file points. Contours may be still be drawn on the surface, depending on the set contour option. set nosurface; set contour base is useful for displaying contours on the grid base. See also set contour.