Scipy optimization

Hey Folks!! I'm new to the Forum world. I looked for a topic on optimization, but didn't see one, so sorry if I'm duplicating...

I'm using scipy.optimize.fmin_slsqp  to solve a non-linear function but it only returns the function value with the initial guess values... Can you please help???

attached is my program... I'm struggling with this problem for over 3 months now, asking for advice with no success!!

I want to minimize the function "changevars(self.gibbs)" within the constraints "changevars(self.atombalance)".

The optimization program only returns the function value with the initial guess values... And i don't know why.
When I run the program, I can see the minimum value graphically, but the optimization can't calculate it...

Can you please help??

Regards

Last edited by Hendrik (January 11, 2012 15:00)