2.21.60 surface

The command surface controls the display of surfaces by `splot`.

Syntax:

      set surface
      unset surface
      show surface

The surface is drawn with the style specified by with, or else the appropriate style, data or function.

Whenever surface is issued, `splot` will not draw points or lines corresponding to the function or data file points. Contours may still be drawn on the surface, depending on the contour option. `unset surface; set contour base` is useful for displaying contours on the grid base. See also contour.