If you have access to Matlab, you could try the PottersWheel ODE modeling and fitting toolbox available at www.potterswheel.de. Greetings, Thomas -- View this message in context: http://old.nabble.com/Fitting-a-system-of-ODEs-to-data-tp25384199p31451555.html Sent from the Scipy-User mailing list archive at Nabble.com.