class ROOT::Minuit2::FCNGradientBase: public ROOT::Minuit2::FCNBase

 Extension of the FCNBase for providing the analytical Gradient of the
function. The user-Gradient is checked at the beginning of the
minimization against the Minuit internal numerical Gradient in order to
spot problems in the analytical Gradient calculation. This can be turned
off by overriding CheckGradient() to make it return "false".
The size of the output Gradient vector must be equal to the size of the
input Parameter vector.
Minuit does a check of the user Gradient at the beginning, if this is not
wanted the method "CheckGradient()" has to be overridden to return

Function Members (Methods)

    This is an abstract class, constructors will not be documented.
    Look at the header to check for available constructors.

virtual boolCheckGradient() const
virtual doubleROOT::Minuit2::FCNBase::ErrorDef() const
virtual vector<double>Gradient(const vector<double>&) const
virtual doubleROOT::Minuit2::FCNBase::operator()(const vector<double>& x) const
ROOT::Minuit2::FCNGradientBase&operator=(const ROOT::Minuit2::FCNGradientBase&)
virtual voidROOT::Minuit2::FCNBase::SetErrorDef(double)
virtual doubleROOT::Minuit2::FCNBase::Up() const

Class Charts

Inheritance Inherited Members Includes Libraries
Class Charts

Function documentation

virtual ~FCNGradientBase()
std::vector<double> Gradient(const vector<double>& ) const
bool CheckGradient()
{return true;}

Last update: root/minuit2:$Id: FCNGradientBase.h 21530 2007-12-20 11:14:35Z moneta $
Copyright (c) 2005 LCG ROOT Math team, CERN/PH-SFT *

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