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MathGroup Archive 2000

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Re: Fitting a function to a list (newbie)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg21883] Re: [mg21851] Fitting a function to a list (newbie)
  • From: "Mark Harder" <harderm at ucs.orst.edu>
  • Date: Wed, 2 Feb 2000 22:54:38 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Dear Mathprof;
See the Function NonlinearFit[] in the Help browser under Add-ons>Standard
Packages>Statistics>NonlinearFit.
-mark
harderm at ucs.orst.edu

-----Original Message-----
From: mathprof at bigfoot.com <mathprof at bigfoot.com>
To: mathgroup at smc.vnet.net
Subject: [mg21883] [mg21851] Fitting a function to a list (newbie)


>I'm new to Mathematica 4.0, so I apologize if this question is overly
>trivial (and please let me know if there's a place for trivial
>question).
>
>I have a list that I'd like to fit to the function:
>
>A + B*Sin[C*x+D]
>
>In other words, I'd like to find the (approximate numeric) values of
>A,B,C,D that yield the best fit to my data.
>
>I tried using Fit[], but it only applies to linear combinations of
>functions, and couldn't optomize the values of C and D.
>
>For this specific problem, I'm guessing some sort of Fourier transform
>might work, but I'm interested in a more general solution -- for example
>if Sin[] were replaced with a more complicated function.
>
>Any help appreciated!
>
>
>Sent via Deja.com http://www.deja.com/
>Before you buy.
>



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