MnMigrad.h

Go to the documentation of this file.

// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
 
/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/
 
#ifndef ROOT_Minuit2_MnMigrad
#define ROOT_Minuit2_MnMigrad
 
#include "Minuit2/MnApplication.h"
#include "Minuit2/VariableMetricMinimizer.h"
 
namespace ROOT {
 
   namespace Minuit2 {
 
 
class FCNBase;
 
//_____________________________________________________________________________
/**
   API class for minimization using Variable Metric technology ("MIGRAD");
    allows for user interaction: set/change parameters, do minimization,
    change parameters, re-do minimization etc.;
    also used by MnMinos and MnContours;
 */
 
class MnMigrad : public MnApplication {
 
public:
 
   /// construct from FCNBase + std::vector for parameters and errors
   MnMigrad(const FCNBase& fcn, const std::vector<double>& par, const std::vector<double>& err, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par,err), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNBase + std::vector for parameters and covariance
   MnMigrad(const FCNBase& fcn, const std::vector<double>& par,  unsigned int nrow, const std::vector<double>& cov, unsigned int stra = 1 ) : MnApplication(fcn, MnUserParameterState(par, cov, nrow), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNBase + std::vector for parameters and MnUserCovariance
   MnMigrad(const FCNBase& fcn, const std::vector<double>& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNBase + MnUserParameters
   MnMigrad(const FCNBase& fcn, const MnUserParameters& par, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNBase + MnUserParameters + MnUserCovariance
   MnMigrad(const FCNBase& fcn, const MnUserParameters& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNBase + MnUserParameterState + MnStrategy
   MnMigrad(const FCNBase& fcn, const MnUserParameterState& par, const MnStrategy& str) : MnApplication(fcn, MnUserParameterState(par), str), fMinimizer(VariableMetricMinimizer()) {}
 
   // constructs from gradient FCN
 
   /// construct from FCNGradientBase + std::vector for parameters and errors
   MnMigrad(const FCNGradientBase& fcn, const std::vector<double>& par, const std::vector<double>& err, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par,err), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNGradientBase + std::vector for parameters and covariance
   MnMigrad(const FCNGradientBase& fcn, const std::vector<double>& par,  unsigned int nrow, const std::vector<double>& cov, unsigned int stra = 1 ) : MnApplication(fcn, MnUserParameterState(par, cov, nrow), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNGradientBase + std::vector for parameters and MnUserCovariance
   MnMigrad(const FCNGradientBase& fcn, const std::vector<double>& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNGradientBase + MnUserParameters
   MnMigrad(const FCNGradientBase& fcn, const MnUserParameters& par, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNGradientBase + MnUserParameters + MnUserCovariance
   MnMigrad(const FCNGradientBase& fcn, const MnUserParameters& par, const MnUserCovariance& cov, unsigned int stra = 1) : MnApplication(fcn, MnUserParameterState(par, cov), MnStrategy(stra)), fMinimizer(VariableMetricMinimizer()) {}
 
   /// construct from FCNGradientBase + MnUserParameterState + MnStrategy
   MnMigrad(const FCNGradientBase& fcn, const MnUserParameterState& par, const MnStrategy& str) : MnApplication(fcn, MnUserParameterState(par), str), fMinimizer(VariableMetricMinimizer()) {}
 
   MnMigrad(const MnMigrad& migr) : MnApplication(migr.Fcnbase(), migr.State(), migr.Strategy(), migr.NumOfCalls()), fMinimizer(migr.fMinimizer) {}
 
   ~MnMigrad() {}
 
   ModularFunctionMinimizer& Minimizer() {return fMinimizer;}
   const ModularFunctionMinimizer& Minimizer() const {return fMinimizer;}
 
private:
 
   VariableMetricMinimizer fMinimizer;
 
private:
 
   //forbidden assignment of migrad (const FCNBase& = )
   MnMigrad& operator=(const MnMigrad&) {return *this;}
};
 
  }  // namespace Minuit2
 
}  // namespace ROOT
 
#endif  // ROOT_Minuit2_MnMigrad