From:	Walter Polkosnik <walt -AatT- panix.com>
Date:	Fri, 18 Oct 1996 17:05:12 -0400 (EDT)
Subject:	Re: CCL:curve fit?

On Fri, 18 Oct 1996 lawson %! at !% argus.cem.msu.edu wrote:

>
> 	Hello,
>  		I am looking for a program (fortran or C) that will fit
> 	a function (Morse like or n-order polynomial) to data (potential
>         curve).  Does anyone know of any free programs available.  I
>         checked the net and could not readily locate anything.  I will
> 	summarize results.
>
> 	Thanks
> 	Dan Lawson
> 	lawson' at \`argus.cem.msu.edu
> 	Graduate Student
> 	Michigan State University

The best routines I've found at lmdif and nl2sol, both from netlib
(netlib.att.com). They are very robust nonlinear curve fitting routines. I
have looked through quite a lot that is available on the net, and I have
been very impressed with performance of both these routines. You will have
to write the driving program, since they are Fortran subroutines. I believe
lmdif is part of the 'matfit' package in netlib and nl2sol is part of the
TOMS collection of software.

--
Walter Polkosnik                             walt[ AT ]panix.com
Physics Department                           http://www.physics.qc.edu/~walt
Queens College, City University of New York  (718)-997-3364 voice
Credo quia absurdum est.                     (718)-997-3349 fax




Similar Messages
10/18/1996:  curve fit?
10/22/1996:  Summary of curve fitting
10/19/1996:  Re: CCL:curve fit?
10/18/1996:  Re: CCL:curve fit?


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