Graphis

Graphis is a graph plotting program for 2D  (one independent variable) and 3D (two independent variables) data. Graph plotting can be performed using both tabular and scripted curves. Tabular curves can be used to plot data held in tabular form, while scripted curves can be used to plot mathematical expressions using the VBScript scripting language. High quality OpenGL graphics is used for all 3D graphs, and 3D graph quantities such as viewing position and scaling can be manipulated interactively. Scripted and tabular curves can be plotted on the same graph allowing comparison of empirical and analytical data.