[SciPy-user] optimize.leastsq fit errors?
gazzar at email.com
Sun Apr 18 08:17:49 CDT 2004
I seem to remember you offered this for integration into scipy a while back and it was put on the backburner for some reason. Licensing or something? If my memory is correct, I'd just like to say to the scipy overlords that I think it would be nice to see it integrated.
----- Original Message -----
From: Robert Kern <rkern at ucsd.edu>
Date: Sun, 18 Apr 2004 03:35:07 -0700
To: SciPy Users List <scipy-user at scipy.net>
Subject: Re: [SciPy-user] optimize.leastsq fit errors?
> Scott Ransom wrote:
> > Hi all,
> > Is it possible (or does anyone have any add-on functions available) to get
> > error estimates on the fit parameters using optimize.leastq? (or
> > alternatively, the resulting covariance matrix from the fit?)
> If your problem is nonlinear, you can try my bindings to ODRPACK. It's
> main purpose for existence is to do orthogonal distance regression
> (errors in both input and output variables), but it can do ordinary
> least squares just fine. Just a quick note: the standard errors that are
> reported are scaled by the reduced chi-square value as is sometimes
> recommended. The full covariance matrix, however, is unscaled.
> > Thanks,
> > Scott
> Robert Kern
> rkern at ucsd.edu
> "In the fields of hell where the grass grows high
> Are the graves of dreams allowed to die."
> -- Richard Harter
> SciPy-user mailing list
> SciPy-user at scipy.net
Sign-up for Ads Free at Mail.com
More information about the SciPy-user