The styles splot with lines and splot with surface both generate a surface
made from a grid of lines. Solid surfaces can be generated using the style
splot with pm3d. Usually the surface is displayed at some convenient viewing
angle, such that it clearly represents a 3D surface. See set view (p.
).
In this case the X, Y, and Z axes are all visible in the plot.
The illusion of 3D is enhanced by choosing hidden line removal or depth-sorted
surface elements. See hidden3d (p.
) and the depthorder (p.
) option of set pm3d (p.
).
The splot command can also calculate and draw contour lines corresponding
to constant Z values. These contour lines may be drawn onto the surface
itself, or projected onto the XY plane. See set contour (p.
).
Build Daemon
2017-11-09