The GGG library, whose authors are, what the ODE community calls, the "Geneva Group", permits the creation of PostScript files from a FORTRAN program, and the automatic insertion into a LaTeX text.
Copy this tar file, unfold the directories with the command tar xvf GGGraphics.tar, follow the instructions in "Readme", .... and "enjoy your winning, Polly" ...
A similar package, based on C++, but much less funny, is Martin's.