ROOT::Math::MultiDimParamFunctionAdapter Class Reference

MultiDimParamFunctionAdapter class to wrap a one-dimensional parametric function in a multi dimensional parameteric function interface This is used typically in fitting where internally the function is stored as multidimension.

To wrap a non-parametric one-dim function in a multi-dim interface one can use simply a ROOT::Math::WrappedFunction<ROOT::Math::IGenFunction> or ROOT::Math::Functor and ROOT::Math::GradFunctor for gradient functions

This class differs from WrappedParamFunction in the fact that the parameters are not stored in the adapter class and optionally it keeps a cloned and managed copy of the adapter class.

Definition at line 49 of file MultiDimParamFunctionAdapter.h.

Public Types
typedef IParamMultiFunction::BaseFunc	BaseFunc
Public Types inherited from ROOT::Math::IParametricFunctionMultiDim
typedef IBaseFunctionMultiDim	BaseFunc
Public Types inherited from ROOT::Math::IBaseFunctionMultiDim
typedef IBaseFunctionMultiDim	BaseFunc

Public Member Functions
	MultiDimParamFunctionAdapter (const IParamFunction &f)
	Constructor from a parametric one dim function interface from a const reference Own the function in this case. More...
	MultiDimParamFunctionAdapter (IParamFunction &f)
	Constructor from a parametric one dim function interface from a non-const reference Do not own the function in this case. More...
	MultiDimParamFunctionAdapter (const MultiDimParamFunctionAdapter &rhs)
	Copy constructor. More...
virtual	~MultiDimParamFunctionAdapter ()
	Destructor (no operations) More...
MultiDimParamFunctionAdapter &	operator= (const MultiDimParamFunctionAdapter &rhs)
	Assignment operator. More...
virtual BaseFunc *	Clone () const
	clone More...
const double *	Parameters () const
	Access the parameter values. More...
void	SetParameters (const double *p)
	Set the parameter values. More...
unsigned int	NPar () const
	Return the number of Parameters. More...
unsigned int	NDim () const
	Retrieve the dimension of the function. More...
Public Member Functions inherited from ROOT::Math::IParametricFunctionMultiDim
double	operator() (const double *x, const double *p) const
	Evaluate function at a point x and for given parameters p. More...
Public Member Functions inherited from ROOT::Math::IBaseFunctionMultiDim
	IBaseFunctionMultiDim ()
virtual	~IBaseFunctionMultiDim ()
	virtual destructor More...
double	operator() (const double *x) const
	Evaluate the function at a point x[]. More...
Public Member Functions inherited from ROOT::Math::IBaseParam
virtual	~IBaseParam ()
	Virtual Destructor (no operations) More...
virtual std::string	ParameterName (unsigned int i) const
	Return the name of the i-th parameter (starting from zero) Overwrite if want to avoid the default name ("Par_0, Par_1, ...") More...

Private Member Functions
double	DoEvalPar (const double *x, const double *p) const
	needed by the interface More...

Private Attributes
bool	fOwn
IParamFunction *	fFunc

#include <Math/MultiDimParamFunctionAdapter.h>

Inheritance diagram for ROOT::Math::MultiDimParamFunctionAdapter:

Collaboration diagram for ROOT::Math::MultiDimParamFunctionAdapter:

Member Typedef Documentation

typedef IParamMultiFunction::BaseFunc ROOT::Math::MultiDimParamFunctionAdapter::BaseFunc

Definition at line 53 of file MultiDimParamFunctionAdapter.h.

Constructor & Destructor Documentation

ROOT::Math::MultiDimParamFunctionAdapter::MultiDimParamFunctionAdapter ( const IParamFunction &  f )

inline

Constructor from a parametric one dim function interface from a const reference Own the function in this case.

Definition at line 60 of file MultiDimParamFunctionAdapter.h.

Referenced by Clone().

ROOT::Math::MultiDimParamFunctionAdapter::MultiDimParamFunctionAdapter ( IParamFunction &  f )

inline

Constructor from a parametric one dim function interface from a non-const reference Do not own the function in this case.

Definition at line 70 of file MultiDimParamFunctionAdapter.h.

ROOT::Math::MultiDimParamFunctionAdapter::MultiDimParamFunctionAdapter ( const MultiDimParamFunctionAdapter &  rhs )

inline

Copy constructor.

Different behaviour according if function is owned or not

Definition at line 79 of file MultiDimParamFunctionAdapter.h.

virtual ROOT::Math::MultiDimParamFunctionAdapter::~MultiDimParamFunctionAdapter ( )

inlinevirtual

Destructor (no operations)

Definition at line 92 of file MultiDimParamFunctionAdapter.h.

Member Function Documentation

virtual BaseFunc* ROOT::Math::MultiDimParamFunctionAdapter::Clone ( ) const

inlinevirtual

clone

Implements ROOT::Math::IBaseFunctionMultiDim.

Definition at line 115 of file MultiDimParamFunctionAdapter.h.

Referenced by MultiDimParamFunctionAdapter(), and operator=().

double ROOT::Math::MultiDimParamFunctionAdapter::DoEvalPar ( const double *  x, const double *  p  ) const

inlineprivatevirtual

needed by the interface

Implements ROOT::Math::IParametricFunctionMultiDim.

Definition at line 134 of file MultiDimParamFunctionAdapter.h.

unsigned int ROOT::Math::MultiDimParamFunctionAdapter::NDim ( ) const

inlinevirtual

Retrieve the dimension of the function.

Implements ROOT::Math::IBaseFunctionMultiDim.

Definition at line 128 of file MultiDimParamFunctionAdapter.h.

unsigned int ROOT::Math::MultiDimParamFunctionAdapter::NPar ( ) const

inlinevirtual

Return the number of Parameters.

Implements ROOT::Math::IBaseParam.

Definition at line 126 of file MultiDimParamFunctionAdapter.h.

MultiDimParamFunctionAdapter& ROOT::Math::MultiDimParamFunctionAdapter::operator= ( const MultiDimParamFunctionAdapter &  rhs )

inline

Assignment operator.

Definition at line 100 of file MultiDimParamFunctionAdapter.h.

const double* ROOT::Math::MultiDimParamFunctionAdapter::Parameters ( ) const

inlinevirtual

Access the parameter values.

Implements ROOT::Math::IBaseParam.

Definition at line 122 of file MultiDimParamFunctionAdapter.h.

void ROOT::Math::MultiDimParamFunctionAdapter::SetParameters ( const double *  p )

inlinevirtual

Set the parameter values.

Parameters

p	vector of doubles containing the parameter values.

to be defined: can user change number of params ? At the moment no.

Implements ROOT::Math::IBaseParam.

Definition at line 124 of file MultiDimParamFunctionAdapter.h.

Member Data Documentation

IParamFunction* ROOT::Math::MultiDimParamFunctionAdapter::fFunc

private

Definition at line 142 of file MultiDimParamFunctionAdapter.h.

Referenced by DoEvalPar(), MultiDimParamFunctionAdapter(), NPar(), operator=(), Parameters(), SetParameters(), and ~MultiDimParamFunctionAdapter().

bool ROOT::Math::MultiDimParamFunctionAdapter::fOwn

private

Definition at line 141 of file MultiDimParamFunctionAdapter.h.

Referenced by MultiDimParamFunctionAdapter(), operator=(), and ~MultiDimParamFunctionAdapter().

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

• math/mathcore/inc/Math/MultiDimParamFunctionAdapter.h