Re: How to do a Nonlinear Complex Fit ?
- To: mathgroup at smc.vnet.net
- Subject: [mg22466] Re: How to do a Nonlinear Complex Fit ?
- From: "Robert Nowak" <robert.nowak at ims.co.at>
- Date: Sun, 5 Mar 2000 00:23:59 -0500 (EST)
- Organization: telecom.at (Vienna, Austria)
- References: <89ibb1$mu4@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
have tried this too, but seems to be not supported by NonlinearFit.
possible solution is to set up your problem with FindMinimum. this way you
must secify your own minimum criterium e.g. least square.
if only the definition range of your function is complex but the function
values are real you can still use NonlinearFit, just look at your complex
data as 2D data. split your complex x values into 2D vektor {Re[x], Im[x]}
Robert
--
---
Robert Nowak (robert.nowak at ims.co.at)
Ionen Mikrofabrikations Systeme GmbH
A-1020 Wien, Schreygasse 3, Austria
Phone: (+43 1)2144894-32, Fax: (+43 1)2144894-99
Ronald Sastrawan <sastra at fmf.uni-freiburg.de> wrote in message
news:89ibb1$mu4 at smc.vnet.net...
> Hello!
>
> I am trying to fit a complex function to real data. The data consists of
> real and imaginary part.
> Now, I can fit both real and imaginary parts seperately using the
> NonlinearFit. Can someone explain how to fit both components with the
> same set of parameters, i.e complex fitting?
>
> Thank you,
>
> --
> Ronald Sastrawan
>
> Freiburg Materials Research Center
> Stefan-Meier-Str. 21
> D-79104 Freiburg
> Germany
> Tel: ++49/761/203-4802
> FAX: ++49/761/203-4801
> EMAIL: sastra at fmf.uni-freiburg.de
> http://www.fmf.uni-freiburg.de/~biomed/FSZ/forschung-FSZ.html
>
>
>