Mplot++ is a(nother !!!) math plotter for Unix(R), Microsoft Windows(R) and 
MacOS X(R)  similar to Gnuplot. 
Mplot++ is not as powerfull as Gnuplot, because it
can only display up to 10 functions in bidimensional graphic, and
only one curve or surface at time in tridimensional graphic.
Moreover, it can use at most 12010 nodes in the first case, 4001
to represent a 3D curve and 5001 for a surface (the curves
are approximated by polygonals, every surface is approximated by a
certain number of polygonals which form polygonal faces).
However, Mplot++ has some features that Gnuplot or other plotters do not:
1) With Mplot++ you can move at once the figures of a bi- or tri-dimensional
   graph;
2) You can increase and decrease in a flash the magnification of the view;
3) You can change the point of view of the observer in a tridimensional
   scene;
4) You can use a fog effect to improve the look of a figure in a 3D graph
   ( yes, just as with OpenGL !!!);
5) You can export easily a graph in the form of Postscript(R) document.
At end, Mplot++ is less powerfull than Gnuplot but it is also more
intuitive ( but you must not believe that i do not like Gnuplot: I love
Gnuplot and Mplot++ has just been a funny thing for me ) and it comes
with a very complete user guide.
