Plot is a package of programs written in Shang language for creating scientific graphs and mathematical illustrations. These graphs and drawings can be 2D or 3D, black and white or colored. The graphs are saved as postcript files which can be easily viewed or converted to other image formats.
The original purpose of plot is to test the OOP related features of Shang. Currently it has a number of limitations to overcome. These include problems related to text alignment, non-ascii text printing, legend, hidden surface removal, and better treatment of intersection of surfaces, etc.