ROOT 6.10/09 Reference Guide |
Interface (abstract class) for parametric gradient multi-dimensional functions providing in addition to function evaluation with respect to the coordinates also the gradient with respect to the parameters, via the method ParameterGradient.
It is a derived class from ROOT::Math::IParametricFunctionMultiDim.
The pure private virtual method DoParameterGradient must be implemented by the derived classes in addition to those inherited by the base abstract classes.
Definition at line 219 of file IParamFunction.h.
Public Types | |
using | BaseFunc = typename IParametricFunctionMultiDimTempl< T >::BaseFunc |
using | BaseGradFunc = IGradientFunctionMultiDim |
using | BaseParamFunc = IParametricFunctionMultiDimTempl< T > |
Public Types inherited from ROOT::Math::IParametricFunctionMultiDimTempl< T > | |
typedef IBaseFunctionMultiDimTempl< T > | BaseFunc |
Public Types inherited from ROOT::Math::IBaseFunctionMultiDimTempl< T > | |
typedef IBaseFunctionMultiDimTempl< T > | BaseFunc |
Public Member Functions | |
virtual | ~IParametricGradFunctionMultiDimTempl () |
Virtual Destructor (no operations) More... | |
double | ParameterDerivative (const double *x, const double *p, unsigned int ipar=0) const |
Evaluate the partial derivative w.r.t a parameter ipar from values and parameters. More... | |
double | ParameterDerivative (const double *x, unsigned int ipar=0) const |
Evaluate partial derivative using cached parameter values. More... | |
virtual void | ParameterGradient (const double *x, const double *p, double *grad) const |
Evaluate the all the derivatives (gradient vector) of the function with respect to the parameters at a point x. More... | |
void | ParameterGradient (const double *x, double *grad) const |
Evaluate all derivatives using cached parameter values. More... | |
Public Member Functions inherited from ROOT::Math::IParametricFunctionMultiDimTempl< T > | |
T | operator() (const T *x, const double *p) const |
Evaluate function at a point x and for given parameters p. More... | |
Public Member Functions inherited from ROOT::Math::IBaseFunctionMultiDimTempl< T > | |
IBaseFunctionMultiDimTempl () | |
virtual | ~IBaseFunctionMultiDimTempl () |
virtual destructor More... | |
virtual IBaseFunctionMultiDimTempl< T > * | Clone () const =0 |
Clone a function. More... | |
virtual unsigned int | NDim () const =0 |
Retrieve the dimension of the function. More... | |
T | operator() (const T *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 unsigned int | NPar () const =0 |
Return the number of Parameters. 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... | |
virtual const double * | Parameters () const =0 |
Access the parameter values. More... | |
virtual void | SetParameters (const double *p)=0 |
Set the parameter values. More... | |
Private Member Functions | |
virtual double | DoParameterDerivative (const double *x, const double *p, unsigned int ipar) const =0 |
Evaluate the partial derivative w.r.t a parameter ipar , to be implemented by the derived classes. More... | |
#include <Math/IParamFunction.h>
using ROOT::Math::IParametricGradFunctionMultiDimTempl< T >::BaseFunc = typename IParametricFunctionMultiDimTempl<T>::BaseFunc |
Definition at line 224 of file IParamFunction.h.
using ROOT::Math::IParametricGradFunctionMultiDimTempl< T >::BaseGradFunc = IGradientFunctionMultiDim |
Definition at line 223 of file IParamFunction.h.
using ROOT::Math::IParametricGradFunctionMultiDimTempl< T >::BaseParamFunc = IParametricFunctionMultiDimTempl<T> |
Definition at line 222 of file IParamFunction.h.
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inlinevirtual |
Virtual Destructor (no operations)
Definition at line 230 of file IParamFunction.h.
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privatepure virtual |
Evaluate the partial derivative w.r.t a parameter ipar , to be implemented by the derived classes.
Implemented in ROOT::Math::MultiDimParamGradFunctionAdapter, ROOT::Math::WrappedMultiTF1Templ< T >, and GaussFunction.
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inline |
Evaluate the partial derivative w.r.t a parameter ipar from values and parameters.
Definition at line 250 of file IParamFunction.h.
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inline |
Evaluate partial derivative using cached parameter values.
Definition at line 265 of file IParamFunction.h.
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inlinevirtual |
Evaluate the all the derivatives (gradient vector) of the function with respect to the parameters at a point x.
It is optional to be implemented by the derived classes for better efficiency
Reimplemented in ROOT::Math::MultiDimParamGradFunctionAdapter, ROOT::Math::WrappedMultiTF1Templ< T >, and GaussFunction.
Definition at line 240 of file IParamFunction.h.
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inline |
Evaluate all derivatives using cached parameter values.
Definition at line 258 of file IParamFunction.h.