Re: NonLinearRegress and constraint parameters
- To: mathgroup at smc.vnet.net
- Subject: [mg57200] Re: [mg57148] NonLinearRegress and constraint parameters
- From: Chris Chiasson <chris.chiasson at gmail.com>
- Date: Fri, 20 May 2005 04:44:04 -0400 (EDT)
- References: <200505190708.DAA13073@smc.vnet.net>
- Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
- Sender: owner-wri-mathgroup at wolfram.com
http://forums.wolfram.com/mathgroup/archive/2003/Sep/msg00184.html On 5/19/05, Frank Küster <frank at kuesterei.ch> wrote: > Hi, > > I have been using Mathematica for a short while, and one application is > curve fitting to a set of measured data. However, I have one problem > with this. If I want to describe my data by a function model[x_] with > parameters a, b, c,.., how can I constrain the parameters to certain > ranges? > > I came across a case where the function model[x_] is not defined (or > yields complex values) with certain combinations of parameters a,b,c,.. > However, much more important would be cases where the function is well > defined (and might fit the data well), but the resulting values for the > parameters are unphysical. I'd like NonLinearRegress to keep the > parameters in the "allowed" region (and rather give a bad or no fit, > indicating my model is wrong). How can I accomplish this? > > Thanks in advance, Frank > -- > Frank Küster > Inst. f. Biochemie der Univ. Zürich > Debian Developer > > -- Chris Chiasson http://chrischiasson.com/ 1 (810) 265-3161
- References:
- NonLinearRegress and constraint parameters
- From: frank@kuesterei.ch (Frank Küster)
- NonLinearRegress and constraint parameters