> > >I also used gnuplot (http://gnuplot-py.sourceforge.net/) but I don't know if >it runs on windows. > >Fedor > > Yes, it runs on windows. http://www.cs.uni.edu/Help/gnuplot/windows.html It also has useful patches: http://www.sci.muni.cz/~mikulik/gnuplot.html#pm3d Laci 1.0