Hi all, I'm glad to inform you about new, 4th OpenOpt Suite module: SpaceFuncs - a tool for 2D, 3D, N-dimensional geometric modeling with possibilities of parametrized calculations, numerical optimization and solving systems of geometrical equations with automatic differentiation. The module is written in Python + NumPy, requires FuncDesigner (and OpenOpt, DerApproximator for some operations). It has completely free license: BSD. For details see its home page http://openopt.org/SpaceFuncs and documentation http://openopt.org/SpaceFuncsDoc Also, you can try it online via our Sage-server http://sage.openopt.org/welcome Regards, Dmitrey.