[SciPy-user] Estimation of parameters while fitting data

Rob Clewley rob.clewley@gmail....
Wed Apr 2 09:30:19 CDT 2008


Hi Doreen,

>  def residuals(p,y,t):
>     return [V - S(t,p) for i in xrange(len(t))]
>

Minpack expects an array type to be returned. You're returning a
python list. So try this:

def residuals(p,y,t):
    return array([V - S(t_val,p) for t_val in t])

Here I've also removed the unnecessary i index variable -- Python lets
you iterate directly over the contents of the list t.

-Rob

-- 
Robert H. Clewley, Ph. D.
Assistant Professor
Department of Mathematics and Statistics
Georgia State University
720 COE, 30 Pryor St
Atlanta, GA 30303, USA

tel: 404-413-6420 fax: 404-651-2246
http://www.mathstat.gsu.edu/~matrhc
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