On Thu, Mar 1, 2012 at 10:39 AM, Olivier Delalleau <sh...@keba.be> wrote: > Sorry I can't help, but I'd just suggest to post this on the scipy mailing > list as you may get more replies there. > > -=- Olivier > > Le 1 mars 2012 10:24, Pierre Barthelemy <bart...@gmail.com> a écrit : >> >> Dear all, >> >> i am writing a program for data analysis. One of the functions of this >> program gives the possibility to fit the functions. I followed the recipe >> described in : hMailScanner soupçonne le lien suivant d'être une tentative >> de fraude de la part de "www.scipy.org" >> ttp://www.scipy.org/Cookbook/FittingData under the section "Simplifying the >> syntax".
http://translate.google.com/#auto|en|MailScanner%20soup%C3%A7onne%20le%20lien%20suivant%20d'%C3%AAtre%20une%20tentative%20de%20fraude%20de%20la%20part%20de%20%22www.scipy.org%22 :) Josef >> >> To fit, i use the function: >> >> out=optimize.leastsq(f, p, full_output=1) >> >> where f is my function and p a list of parameters. >> >> One thing that i would like to know is how can i get the error on the >> parameters ? From what i understood from the "Cookbook" page, and from the >> scipy manual >> (http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.leastsq.html#scipy.optimize.leastsq), >> the second argument returned by the leastsq function gives access to these >> errors. >> std_error=std(y-function(x)) >> param_error=sqrt(diagonal(out[1])*std_error) >> >> The param_errors that i get in this case are extremely small. Much smaller >> than what i expected, and much smaller than what i can get fitting the >> function with matlab. So i guess i made an error here. >> >> Can someone tell me how i should do to retrieve the parameter errors ? >> >> Bests, >> >> Pierre >> >> PS: i got the impression something went wrong with my previous message, >> sorry for that. >> >> >> _______________________________________________ >> NumPy-Discussion mailing list >> NumPy-Discussion@scipy.org >> http://mail.scipy.org/mailman/listinfo/numpy-discussion >> > > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
