VFGEN VFGEN - A Vector Field File Generator for differential equation solvers and other computational tools
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define field vector define vector field differential equation solver export vector field

VFGEN Description

VFGEN - A Vector Field File Generator for differential equation solvers and other computational tools There are many excellent programs available for solving differential equations and computing bifurcations of vector fields. However, each has its own format for specifying the vector field that defines the differential equation. VFGEN will allow you to define your vector field once (using XML), and export the vector field in several formats. VFGEN uses a C++ symbolic algebra library (GiNaC) to generate Jacobians and higher derivatives automatically.Here are some key features of "VFGEN":· Specify your equations once, and export to multiple file formats.· Generate analytical expressions for Jacobians and higher derivatives automatically.· Available export formats include MATLAB, Scilab, AUTO, GNU Scientific Library (GSL), SciPy, PyDSTool, XPP and more.What's New in This Release:· New commands: Added the octave, pydstool and radau5 commands.· The demo program created by the cvode command outputs each point that it computes, instead of a set of 201 evenly spaced points.· The parstyle option was removed from the matcont command. (Each parameter must be given as a separate argument in the vector field function and its derivatives.)· Added brief docstrings to the vector field functions created by the pygsl and scipy commands.

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