void graf3d (xorig, xstep, xmax, yorig, ystep, ymax, zorig, zstep, zmax) D3PLT.C Level 2
float ?orig Value at axis origin.
float ?step Interval between tick marks in user units. It must be positive.
float ?max Value at end of axis. It must be greater than the origin.
graf3d() determines the scaling and labeling of the axes. GraphiC will always choose rounded values for the tick marks to avoid clutter on the 3-D plot. The 3-D axes are always placed at the edges of the plot area to enhance legibility.