Public Member Functions | List of all members

#include <fitting.h>

Inheritance diagram for FunctionFitDownhillSimplex:
Inheritance graph

Public Member Functions

 FunctionFitDownhillSimplex ()
 ~FunctionFitDownhillSimplex ()
bool init (ModelFunction &model_func, unsigned int nvals)
bool fit (const Array< float, 1 > &yvals, const Array< float, 1 > &ysigma=defaultArray, const Array< float, 1 > &xvals=defaultArray, unsigned int max_iterations=DEFAULT_MAX_ITER, double tolerance=DEFAULT_TOLERANCE)
unsigned int numof_fitpars () const
float evaluate (const fvector &pars) const

Detailed Description

Class for downhill-simplex-based fitting of functions.

Definition at line 501 of file fitting.h.

Constructor & Destructor Documentation

§ FunctionFitDownhillSimplex()

FunctionFitDownhillSimplex::FunctionFitDownhillSimplex ( )

Constructs uninitialized function fit

§ ~FunctionFitDownhillSimplex()

FunctionFitDownhillSimplex::~FunctionFitDownhillSimplex ( )


Member Function Documentation

§ evaluate()

float FunctionFitDownhillSimplex::evaluate ( const fvector ) const

Multi-dimensional function to be minimized

Implements MinimizationFunction.

§ fit()

bool FunctionFitDownhillSimplex::fit ( const Array< float, 1 > &  yvals,
const Array< float, 1 > &  ysigma = defaultArray,
const Array< float, 1 > &  xvals = defaultArray,
unsigned int  max_iterations = DEFAULT_MAX_ITER,
double  tolerance = DEFAULT_TOLERANCE 

The fitting routine that takes the starting values from the model function, y-values 'yvals', and optionally the corresponding y-error bars 'ysigma' and x-vals 'xvals'. If no error-bars are given, they are all set to 0.1 and if no x-vals are given equidistant points with an increment of one are chosen, i.e. xvals(i)=i; A maximum of 'max_iterations' iterations and the given 'tolerance' is used during the fit. Returns true on success.

Implements FunctionFitInterface.

§ init()

bool FunctionFitDownhillSimplex::init ( ModelFunction model_func,
unsigned int  nvals 

Prepare a non-linear least-square fit of function 'model_func' for 'nvals' values

Implements FunctionFitInterface.

§ numof_fitpars()

unsigned int FunctionFitDownhillSimplex::numof_fitpars ( ) const

Returns the number of independent fitting parameters

Implements MinimizationFunction.

The documentation for this class was generated from the following file: