plot3dc: Magnitude colored plot surface with contour.

plot3dc (x, y, z, nx, ny, opt, clevel, nlevel);

Identical to plot3d but with extra functionalities: the surface mesh can be colored accordingly to the current z value being plotted, a contour plot can be drawn at the base XY plane, and a curtain can be drawn between the plotted function border and the base XY plane. The arguments are identical to plmeshc. The only difference between plmeshc and plot3dc is that plmeshc draws the bottom side of the surface, while plot3dc only draws the surface as viewed from the top.

Redacted form:

This function is used in example 21.