The LAYOUT OVERLAY3D Statement

GTL has one layout for 3D graphics: the LAYOUT OVERLAY3D statement. Two 3D plot statements can be placed within this layout: BIHISTO3DPARM and SURFACEPLOTPARM. No 2D plot statements can be used in this layout, although text statements such as ENTRY can be used.
Typical applications of OVERLAY3D layout are to create a 3D representation of a surface or a bi-variate histogram (possibly overlaid together). The 3D layout has features that 2D layouts do not have. For example, it can do each of the following:
  • generate axes for three independent variables (X, Y,and Z)
  • set a viewpoint of the graph (TILT=, ROTATE=, and ZOOM= options)
  • display lines that represent the intersection of axis walls (CUBE= option).
The following figure shows the basic anatomy of a 3D graph:
Anatomy of a 3D Graph
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