Re: Fitting a function to a list (newbie)
- To: mathgroup at smc.vnet.net
- Subject: [mg21864] Re: Fitting a function to a list (newbie)
- From: Harald Giese <giese at ifm.uni-hamburg.de>
- Date: Wed, 2 Feb 2000 22:54:21 -0500 (EST)
- Organization: Institut fuer Meereskunde, Universitaet Hamburg
- References: <872jej$civ@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
mathprof at bigfoot.com wrote: > > 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! > Hi "mathprof" (?!) Have a look at the Mathematica standard package "NumericalMath`TrigFit`". Regards, /Harald