Re: Find a function that fits two dimensional data
- To: mathgroup at smc.vnet.net
- Subject: [mg67282] Re: Find a function that fits two dimensional data
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Thu, 15 Jun 2006 03:26:46 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <e6op8s$s2m$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Raj wrote:
> hi!
>
> Could somebody help me find a function that fits some two dimensional
> data that I have..the data is of the form {x,y,f(x,y)} and so far the
> function aa/(bb+cc Exp[-dd xy]) (where aa,bb,cc,dd are constants) seems
> to fit the data best but it is not quite accurate fit. I have used
> findfit to find this function. Is there a better way to find an exact
> function or should I keep experimenting? :-)
>
> Thanks,
>
> Raj
>
You could check and do some experiments with the standard packages
Statistics`NonlinearFit` [1] and NumericalMath`TrigFit` [2].
HTH,
Jean-Marc
1.
http://documents.wolfram.com/mathematica/Add-onsLinks/StandardPackages/Statistics/NonlinearFit.html
2.
http://documents.wolfram.com/mathematica/Add-onsLinks/StandardPackages/NumericalMath/TrigFit.html