[Help-gsl] Re: 2 dim data fitting

[Harroun, Thad - NRC]

> Hello,
> 
> I wish to fit a 2 dimensional data set with at least 8 parameters on 
> cosin and sin functions.
> I'm wondering whether GSL privides such tool.
> Has someone already performed  such kind of calculation?
> Thanks in advance,
> Regards,
> 
>                         Eric.
> -- 

With considerable help from the GSL community, I have put together a testing
framework for fitting data using the GSL. It was designed a) for multiple
fitting functions, and b) for functions with unknown analytical derivatives.
It also fits using nonlinear least squares, or multidimensional
minimization, or simmulated annealing.

It might be overkill for you Eric, but it's not that many lines of code, so
it still may be helpfull.

http://neutron.nrc-cnrc.gc.ca/people/harroun/documents/test-gsl.tar.gz

Thad
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