plw3d: Set up window for 3-d plotting

Sets up a window for a three-dimensional surface plot within the currently defined two-dimensional window. The enclosing box for the surface plot defined by xmin, xmax, ymin, ymax, zmin and zmax in user-coordinate space is mapped into a box of world coordinate size basex by basey by height so that xmin maps to -basex/2, xmax maps to basex/2, ymin maps to -basey/2, ymax maps to basey/2, zmin maps to 0 and zmax maps to height. The resulting world-coordinate box is then viewed by an observer at altitude alt and azimuth az. This routine must be called before plbox3 or plot3d. For a more complete description of three-dimensional plotting see the Section called Three Dimensional Surface Plots in Chapter 3.

basex (PLFLT, input) The x coordinate size of the world-coordinate box. basey (PLFLT, input) The y coordinate size of the world-coordinate box. height (PLFLT, input) The z coordinate size of the world-coordinate box. xmin (PLFLT, input) The minimum user x coordinate value. xmax (PLFLT, input) The maximum user x coordinate value. ymin (PLFLT, input) The minimum user y coordinate value. ymax (PLFLT, input) The maximum user y coordinate value. zmin (PLFLT, input) The minimum user z coordinate value. zmax (PLFLT, input) The maximum user z coordinate value. alt (PLFLT, input) The viewing altitude in degrees above the xy plane. az (PLFLT, input) The viewing azimuth in degrees. When az=0, the observer is looking face onto the zx plane, and as az is increased, the observer moves clockwise around the box when viewed from above the xy plane.