ROOT 6.10/09 Reference Guide |
Interface (abstract class) for parametric one-dimensional gradient functions providing in addition to function evaluation with respect the coordinates also the gradient with respect to the parameters, via the method ParameterGradient.
It is a derived class from ROOT::Math::IParametricFunctionOneDim.
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 293 of file IParamFunction.h.
Public Types | |
typedef IParametricFunctionOneDim::BaseFunc | BaseFunc |
typedef IGradientFunctionOneDim | BaseGradFunc |
typedef IParametricFunctionOneDim | BaseParamFunc |
Public Types inherited from ROOT::Math::IParametricFunctionOneDim | |
typedef IBaseFunctionOneDim | BaseFunc |
Public Types inherited from ROOT::Math::IBaseFunctionOneDim | |
typedef IBaseFunctionOneDim | BaseFunc |
Public Member Functions | |
virtual | ~IParametricGradFunctionOneDim () |
Virtual Destructor (no operations) More... | |
double | ParameterDerivative (double x, const double *p, unsigned int ipar=0) const |
Partial derivative with respect a parameter. More... | |
double | ParameterDerivative (double x, unsigned int ipar=0) const |
Evaluate partial derivative using cached parameter values. More... | |
double | ParameterDerivative (const double *x, const double *p, unsigned int ipar=0) const |
Partial derivative with respect a parameter Compatibility interface with multi-dimensional functions. More... | |
double | ParameterDerivative (const double *x, unsigned int ipar=0) const |
Evaluate partial derivative using cached parameter values (multi-dim like interface) More... | |
virtual void | ParameterGradient (double x, const double *p, double *grad) const |
Evaluate the derivatives of the function with respect to the parameters at a point x. More... | |
void | ParameterGradient (double x, double *grad) const |
Evaluate all derivatives using cached parameter values. More... | |
void | ParameterGradient (const double *x, const double *p, double *grad) const |
Compatibility interface with multi-dimensional functions. More... | |
void | ParameterGradient (const double *x, double *grad) const |
Evaluate all derivatives using cached parameter values (multi-dim like interface) More... | |
Public Member Functions inherited from ROOT::Math::IParametricFunctionOneDim | |
double | operator() (double x, const double *p) const |
Evaluate function at a point x and for given parameters p. More... | |
double | operator() (const double *x, const double *p) const |
multidim-like interface More... | |
Public Member Functions inherited from ROOT::Math::IBaseFunctionOneDim | |
IBaseFunctionOneDim () | |
virtual | ~IBaseFunctionOneDim () |
virtual destructor More... | |
virtual IBaseFunctionOneDim * | Clone () const =0 |
Clone a function. More... | |
double | operator() (double x) const |
Evaluate the function at a point x Use the a pure virtual private method DoEval which must be implemented by sub-classes. 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 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 (double x, const double *p, unsigned int ipar) const =0 |
Evaluate the gradient, to be implemented by the derived classes. More... | |
#include <Math/IParamFunction.h>
Definition at line 302 of file IParamFunction.h.
Definition at line 301 of file IParamFunction.h.
Definition at line 300 of file IParamFunction.h.
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inlinevirtual |
Virtual Destructor (no operations)
Definition at line 308 of file IParamFunction.h.
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privatepure virtual |
Evaluate the gradient, to be implemented by the derived classes.
Implemented in ROOT::Math::Polynomial, and ROOT::Math::WrappedTF1.
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inline |
Partial derivative with respect a parameter.
Definition at line 352 of file IParamFunction.h.
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inline |
Evaluate partial derivative using cached parameter values.
Definition at line 360 of file IParamFunction.h.
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inline |
Partial derivative with respect a parameter Compatibility interface with multi-dimensional functions.
Definition at line 369 of file IParamFunction.h.
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inline |
Evaluate partial derivative using cached parameter values (multi-dim like interface)
Definition at line 378 of file IParamFunction.h.
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inlinevirtual |
Evaluate the derivatives 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 if needed
Reimplemented in ROOT::Math::WrappedTF1.
Definition at line 317 of file IParamFunction.h.
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inline |
Evaluate all derivatives using cached parameter values.
Definition at line 327 of file IParamFunction.h.
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inline |
Compatibility interface with multi-dimensional functions.
Definition at line 335 of file IParamFunction.h.
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inline |
Evaluate all derivatives using cached parameter values (multi-dim like interface)
Definition at line 343 of file IParamFunction.h.