8.12.3 Belt (Pure C)

C function: void mgl_belt_xy (HMGL gr, const HMDT x, const HMDT y, const HMDT z, const char *sch)

The function draws belts for surface specified parametrically {x[i,j], y[i,j], z[i,j]}. This plot can be used as 3d generalization of Plot(). String sch sets the color scheme (see section Color scheme). Previous color scheme is used by default. If sch contain ‘x’ then belts are drawn along x-direction else (by default) belts are drawn along y-direction. The minor dimensions of arrays x, y, z should be equal x.nx=z.nx && y.nx=z.ny or x.nx=y.nx=z.nx && x.ny=y.ny=z.ny. Arrays x and y can be vectors (not matrices as z). Belts are plotted for each z slice of the data. See also Fall(), Surf(), Plot(), NeshNum. See section Belt sample, for sample code and picture.

C function: void mgl_belt (HMGL gr, const HMDT z, const char *sch)

The same as previous with x, y equidistantly distributed in interval [Min, Max].