A simple BASIC program for constructing three-dimensional graphs.

This report describes a simple program for plotting three-dimensional curves and thus allowing a visual representation of the simultaneous interaction of three variables. Graphs can be displayed on the screen or printed using a graphics printer. The original data can be stored, printed, recalled and edited, as can the graph parameters. Completed graphs can also be stored for later review or printing. The program as outlined can accommodate up to 10 curves of up to 50 points each, but these limits can be easily increased. The program is written in BASIC, thus allowing it to be readily modified. As listed, the complete source code has 357 lines and occupies about 12 kilobytes when saved in compressed binary format.