(I doubt it's the ideal forum for this question, but I found no better. Mentors, feel free to move it if you think it will get better answers somewhere else) Hi, I use a computer to submit Math and Physics homework and work with a LaTeX editor called LyX. The problem is that I don't have a very good method of drawing graphics (ie. schematic things like a function plot or a mechanical system). Do any of you happen to know a good software for drawing such things and combining them in a LaTeX file? If possible, work with UNIX and draw graphs as vectors (output as svg, eps, etc.) Thanks in advance.