Program Wanted: Nonlinear, Two Parameter, Least Squares Fit.

Article View: sci.math.num-analysis

Article #580

Back to sci.math.num-analysis Previous Next

#580

From: noring
Date: Thu, 03 Jan 1991 21:02

18 lines
1088 bytes

Hello,

I'm trying to curve fit a set of measured (x,y) pairs to a non-linear
equation, the general form (sparing you the nasty details) being:

   y= f(x,a,b),

where 'a' and 'b' are two parameters that need to be determined (that
is, which will best fit the equation to the data).

I'm sure I could go to a numerical analysis book, and write a program
to determine these parameters, but I'd like to first see if anybody has
already written a self-contained program (preferably in FORTRAN) that
will do this.  Your help is appreciated.

Thanks,

Jon Noring

Technical Details

Message-ID: <1991Jan3.140221.1@vaxr.llnl.gov>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!spool2.mu.edu!sol.ctr.columbia.edu!lll-winken!vaxr.llnl.gov!noring

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!spool2.mu.edu!sol.ctr.columbia.edu!lll-winken!vaxr.llnl.gov!noring
From: noring@vaxr.llnl.gov
Newsgroups: sci.math.num-analysis,sci.misc,comp.misc
Subject: Program Wanted: Nonlinear, Two Parameter, Least Squares Fit.
Message-ID: <1991Jan3.140221.1@vaxr.llnl.gov>
Date: 3 Jan 91 21:02:21 GMT
Sender: usenet@lll-winken.LLNL.GOV
Followup-To: sci.math.num-analysis
Organization: LLNL_LIS
Lines: 18
Nntp-Posting-Host: vaxr.llnl.gov