#include <min_fit.h>
This can be useful for fitting problems which might be better handled by more complex minimizers than those that are used in gsl_fit. For problems with many local minima near the global minimum, using a sim_anneal object with this class can sometimes produce better results than gsl_fit.
Definition at line 53 of file min_fit.h.
Data Structures | |
struct | func_par |
A structure for passing information to the GSL functions for the min_fit class. More... | |
Public Member Functions | |
virtual int | fit (size_t ndat, vec_t &xdat, vec_t &ydat, vec_t &yerr, size_t npar, vec_t &par, mat_t &covar, double &chi2, param_t &pa, func_t &fitfun) |
Fit the data specified in (xdat,ydat) to the function fitfun with the parameters in par . | |
int | set_multi_min (multi_min< func_par *, multi_funct< func_par *, vec_t > > &mm) |
Set the multi_min object to use (default is gsl_mmin_nmsimplex). | |
virtual const char * | type () |
Return string denoting type ("min_fit"). | |
Data Fields | |
gsl_mmin_simp< func_par *, multi_funct< func_par *, vec_t > > | def_multi_min |
The default minimizer. | |
Protected Member Functions | |
double | min_func (size_t np, const vec_t &xp, func_par *&fp) |
The function to minimize. | |
Static Protected Member Functions | |
static int | func (const gsl_vector *x, void *pa, gsl_vector *f) |
Evaluate the function. | |
static int | dfunc (const gsl_vector *x, void *pa, gsl_matrix *jac) |
Evaluate the jacobian. | |
static int | fdfunc (const gsl_vector *x, void *pa, gsl_vector *f, gsl_matrix *jac) |
Evaluate the function and the jacobian. | |
Protected Attributes | |
multi_min< func_par *, multi_funct< func_par *, vec_t > > * | mmp |
The minimizer. | |
bool | min_set |
True if the minimizer has been set by the user. |
virtual int fit | ( | size_t | ndat, | |
vec_t & | xdat, | |||
vec_t & | ydat, | |||
vec_t & | yerr, | |||
size_t | npar, | |||
vec_t & | par, | |||
mat_t & | covar, | |||
double & | chi2, | |||
param_t & | pa, | |||
func_t & | fitfun | |||
) | [inline, virtual] |
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