TGo4FitMinuit Class Reference

Minuit minimization action Now only TGo4FitMinuit class, provided general minimization routine, is available. More...

#include <TGo4FitMinuit.h>

Inheritance diagram for TGo4FitMinuit:

List of all members.

Public Member Functions
	TGo4FitMinuit ()
	Default constructor.
	TGo4FitMinuit (const char *Name)
	Create TGo4FitMinuit object (action) with given name.
virtual	~TGo4FitMinuit ()
	Destroys TGo4FitMinuit object.
void	AddCommand (const char *iCommand)
	Add Minuit command to command list.
Int_t	GetNumCommands ()
	Returns number of commands in list.
const char *	GetCommand (Int_t n)
	Return command with given index.
void	ClearCommands ()
	Clear Minuit commands list.
Int_t	GetNumResults ()
	Returns number of result objects.
TGo4FitMinuitResult *	GetResult (Int_t indx)
	Get TGo4FitMinuitResult object with given index.
TGo4FitMinuitResult *	FindResult (const char *ResName)
	Find result object with provided name.
void	AddResult (TGo4FitMinuitResult *res)
	Add result object to results list.
void	RemoveResult (TGo4FitMinuitResult *res)
	Remove result from results list and delete it.
void	ClearResults ()
	Delete all results objects.
virtual Bool_t	NeedBuffers () const
virtual void	DoAction (TGo4FitterAbstract *Fitter)
	Execute all Minuit commands.
virtual void	Print (Option_t *option) const
	Print information on standard output.
Protected Attributes
TObjArray	fxCommands
	List of minuit commands, presented by array of TObjString.
TObjArray	fxResults
	List of TGo4FitMinuitResult objects.

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Detailed Description

Minuit minimization action Now only TGo4FitMinuit class, provided general minimization routine, is available.

It uses standard ROOT TMinuit class [3]. TGo4FitMinuit class includes Minuit commands list, which will be executed during minimizatione. There are several methods of TGo4FitMinuit class to operate with command list: AddCommand() - add command to commands list; GetNumCommands() - get number of commands in list; GetCommand() - get command from list; ClearCommands() - clear commands list. To get full description of Minuit commands, see Minuit reference manual [4]. In additional to standard Minuit commands, one adds result command, which get status and results values from Minuit and store them as TGo4FitMinuitResult objects in TGo4FitMinuit results list. The syntax of command is

result [xxxx [result_name]]

where "result"- identifier of this command, "xxxx" - flags field (default - "1000"), "result_name"- optional name of result object (default - "Result"). The each "x" in flags field can be: "0" - option switched off or "1" - switched on. The meanings of flags are: 1. Storing of current parameters values and errors (ParValues and ParError arrays of doubles, TArrayD class). 2. Storing result of Minos error analysis (EPLUS, EMINUS, EPARAB & GLOBCC arrays of doubles). Normally should be used after "MINOs" command of Minuit. 3. Storing error matrice estimations to ERRORMATRIX (TMatrix class). Columns and strings in matrix, corresponds to fixed elements, will be set to 0. 4. Storing contour plot in CONTOX, CONTOY (both are arrays of doubles) and CONTOCH (array of char, TArrayC). Normally should be switched on after "MNContour" command of Minuit. Result object always store status values of Minuit (see MNSTAT command in Minuit reference manual [4]): FMIN - the best function value found so far; FEDM - the estimated vertical distance remaining to minimum; ERRDEF - the value of UP defining parameter uncertainties; NPARI - number of currently variable parameters; NPARX - the highest (external) parameter number defined by user; ISTAT - a status integer indicating how good is the covariance matrix. Several result commands can be present in Minuit command list and the same number of TGo4FitMinuitResult object will be present in TGo4FitMinuit object after minimization is finished. Results can be accessed via index, using GetNumResults() and GetResult() methods or via result name, using FindResult() method. The results objects always owned by TGo4FitMinuit object and stored together with it. Thus, if TGo4FitMinuit object will be saved together with fitter, the TGo4FitMinuitResult objects also will be stored and can be accessed later, then fitter will be loaded.

Definition at line 51 of file TGo4FitMinuit.h.

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Constructor & Destructor Documentation

TGo4FitMinuit::TGo4FitMinuit (   )

Default constructor. Definition at line 56 of file TGo4FitMinuit.cxx.

TGo4FitMinuit::TGo4FitMinuit (  const char *  Name  )

Create TGo4FitMinuit object (action) with given name. Definition at line 59 of file TGo4FitMinuit.cxx. References fxCommands, and fxResults.

TGo4FitMinuit::~TGo4FitMinuit (   )  [virtual]

Destroys TGo4FitMinuit object. Definition at line 65 of file TGo4FitMinuit.cxx.

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Member Function Documentation

void TGo4FitMinuit::AddCommand (  const char *  iCommand  )

Add Minuit command to command list. To get a full description of possible Minuit commands, see Minuit documentation. Definition at line 68 of file TGo4FitMinuit.cxx. References fxCommands. Referenced by TGo4FitterAbstract::AddSimpleMinuit(), and BuildFitter().

Int_t TGo4FitMinuit::GetNumCommands (   )  [inline]

Returns number of commands in list. Definition at line 78 of file TGo4FitMinuit.h. References fxCommands.

const char * TGo4FitMinuit::GetCommand (  Int_t  n  )

Return command with given index. Definition at line 73 of file TGo4FitMinuit.cxx. References fxCommands.

void TGo4FitMinuit::ClearCommands (   )  [inline]

Clear Minuit commands list. Definition at line 88 of file TGo4FitMinuit.h. References fxCommands.

Int_t TGo4FitMinuit::GetNumResults (   )  [inline]

Returns number of result objects. Definition at line 93 of file TGo4FitMinuit.h. References fxResults.

TGo4FitMinuitResult * TGo4FitMinuit::GetResult (  Int_t  indx  )

Get TGo4FitMinuitResult object with given index. Definition at line 135 of file TGo4FitMinuit.cxx. References fxResults.

TGo4FitMinuitResult * TGo4FitMinuit::FindResult (  const char *  ResName  )

Find result object with provided name. Definition at line 140 of file TGo4FitMinuit.cxx. References fxResults.

void TGo4FitMinuit::AddResult (  TGo4FitMinuitResult *  res  )

Add result object to results list. Definition at line 145 of file TGo4FitMinuit.cxx. References fxResults.

void TGo4FitMinuit::RemoveResult (  TGo4FitMinuitResult *  res  )

Remove result from results list and delete it. Definition at line 150 of file TGo4FitMinuit.cxx. References fxResults.

void TGo4FitMinuit::ClearResults (   )  [inline]

Delete all results objects. Definition at line 118 of file TGo4FitMinuit.h. References fxResults.

virtual Bool_t TGo4FitMinuit::NeedBuffers (   )  const [inline, virtual]

Reimplemented from TGo4FitterAction. Definition at line 120 of file TGo4FitMinuit.h.

void TGo4FitMinuit::DoAction (  TGo4FitterAbstract *  Fitter  )  [virtual]

Execute all Minuit commands. Implements TGo4FitterAction. Definition at line 78 of file TGo4FitMinuit.cxx. References TGo4FitMinuitResult::CallMNEMAT(), TGo4FitMinuitResult::CallMNERRS(), TGo4FitMinuitResult::CallMNPOUT(), TGo4FitMinuitResult::CallMNSTAT(), fxCommands, fxResults, and TGo4FitMinuitResult::GetContourPlot().

void TGo4FitMinuit::Print (  Option_t *  option  )  const [virtual]

Print information on standard output. Reimplemented from TGo4FitNamed. Definition at line 156 of file TGo4FitMinuit.cxx. References fxCommands, fxResults, and TGo4FitNamed::Print().

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Member Data Documentation

TObjArray TGo4FitMinuit::fxCommands [protected]

List of minuit commands, presented by array of TObjString. Definition at line 137 of file TGo4FitMinuit.h. Referenced by AddCommand(), ClearCommands(), DoAction(), GetCommand(), GetNumCommands(), Print(), and TGo4FitMinuit().

TObjArray TGo4FitMinuit::fxResults [protected]

List of TGo4FitMinuitResult objects. Definition at line 142 of file TGo4FitMinuit.h. Referenced by AddResult(), ClearResults(), DoAction(), FindResult(), GetNumResults(), GetResult(), Print(), RemoveResult(), and TGo4FitMinuit().

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

• Go4Fit/TGo4FitMinuit.h
• Go4Fit/TGo4FitMinuit.cxx

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