GammaVariateFunction Struct Reference

#include <fitting.h>

Inheritance diagram for GammaVariateFunction:

Public Member Functions
void	set_pars (float alphaval, float xmax, float ymax)
float	evaluate_f (float x) const
fvector	evaluate_df (float x) const
unsigned int	numof_fitpars () const
fitpar &	get_fitpar (unsigned int i)
Public Member Functions inherited from ModelFunction
Array< float, 1 >	get_function (const Array< float, 1 > &xvals) const

Detailed Description

Class for fitting gamma variate function to a 1D curve

y= A*x^alpha*exp(-x/beta)

Definition at line 288 of file fitting.h.

Member Function Documentation

evaluate_df()

fvector GammaVariateFunction::evaluate_df ( float  x ) const

virtual

Returns the first derivatives at position 'x'.

Implements ModelFunction.

evaluate_f()

float GammaVariateFunction::evaluate_f ( float  x ) const

virtual

Returns the function value at position 'x'.

Implements ModelFunction.

get_fitpar()

fitpar& GammaVariateFunction::get_fitpar ( unsigned int  i )

virtual

Returns reference to the i'th fitting parameter.

Implements ModelFunction.

numof_fitpars()

unsigned int GammaVariateFunction::numof_fitpars ( ) const

virtual

Returns the number of independent fitting parameters.

Implements ModelFunction.

set_pars()

void GammaVariateFunction::set_pars	(	float	alphaval,
		float	xmax,
		float	ymax
	)

Set parameters from a simplified set of parameters: xmax and ymax are the x- and y-values of the maximum (see Madsen, Phys. Med. Biol. 37, 1992)

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

• fitting.h