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[Help-gsl] Nonlinear Least-Squares Fitting

From: Marcelo Vargas dos Santos
Subject: [Help-gsl] Nonlinear Least-Squares Fitting
Date: Tue, 12 Jul 2011 15:35:37 -0300

Hi, I'm a Msc Student and i'm using the gsl to develop a program of
statistical analisys. There are some numeriacl routines to Nonlinear
Least-Squares Fitting which i can use to constrais parameters using a
functions like:

f_i = (Y(x, t_i) - y_i) / \sigma_i

and a Jacobian:

J_{ij} =(1 / \sigma_i)  d Y_i / d x_j

but I need to constrain a funcion which \sigma_i depends on some free
parameters to, how can I use this routines in this case?

Thanks for your atention

Marcelo Vargas dos Santos

Sala A 318-05
Tel.: (21) 2562-7276
E-mails: address@hidden,  address@hidden
Departamento de Física Matemática
Instituto de Física
Universidade Federal do Rio de Janeiro

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