Re: [Help-gsl] simple nonlinear fit

[Tuomo Keskitalo]

Hi,

On 08/28/2009 06:00 AM, Long Vu wrote:

> I am new to GSL and new to nonlinear fit as well. I would like to use
> the nonlinear fit of GSL, could you please help?

You should familiarize yourself with the basics of non-linear regression 
/ non-linear least squares first. You should be able to use the GSL 
example as a starting point. Please post your code to the list so that 
people can see what might be wrong.

To get initial values, you can try different values of a, b and c and 
see what f(x) values they give you. Try different values until you get 
something that resembles your f(x) data. Then use them as the initial 
values.

Regards,
Tuomo

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