NonlinearFit
- To: mathgroup at smc.vnet.net
- Subject: [mg49846] NonlinearFit
- From: Andrew_Pollock at rcomext.com
- Date: Wed, 4 Aug 2004 10:46:23 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello,
I was hoping someone could help me with a problem I'm having with
NonlinearFit.
I'm trying to fit an exponential function to a set of data using the
following command:
<< Statistics`NonlinearFit`
NonlinearFit[Data,theta1 Exp[theta2 x],x,{theta1,theta2}]
Data is the following table, where the right column is 3*Exp[.2*x]
(Embedded image moved to file: pic13984.pcx)
[contact the author to get the file - moderator]
NonlinearFit returns (Embedded image moved to file: pic03027.pcx), which is
clearly not 3*Exp[.2*x].
I only have this problem when trying to fit exponential functions. Any
suggestions?
Thanks,
Andy
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- From: Yasvir Tesiram <yat@omrf.ouhsc.edu>
- Re: NonlinearFit