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Reference Guide
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TFumili Class Reference

Definition at line 19 of file TFumili.h.

Public Member Functions

 TFumili (Int_t maxpar=25)
 
virtual ~TFumili ()
 TFumili destructor. More...
 
void BuildArrays ()
 Allocates memory for internal arrays. More...
 
virtual Double_t Chisquare (Int_t npar, Double_t *params) const
 return a chisquare equivalent More...
 
virtual void Clear (Option_t *opt="")
 Resets all parameter names, values and errors to zero. More...
 
void DeleteArrays ()
 Deallocates memory. More...
 
void Derivatives (Double_t *, Double_t *)
 Calculates partial derivatives of theoretical function. More...
 
Int_t Eval (Int_t &npar, Double_t *grad, Double_t &fval, Double_t *par, Int_t flag)
 Evaluate the minimisation function Input parameters: npar: number of currently variable parameters par: array of (constant and variable) parameters flag: Indicates what is to be calculated grad: array of gradients Output parameters: fval: The calculated function value. More...
 
Double_t EvalTFN (Double_t *, Double_t *)
 Evaluate theoretical function df: array of partial derivatives X: vector of theoretical function argument. More...
 
virtual Int_t ExecuteCommand (const char *command, Double_t *args, Int_t nargs)
 Execute MINUIT commands. More...
 
Int_t ExecuteSetCommand (Int_t)
 Called from TFumili::ExecuteCommand in case of "SET xxx" and "SHOW xxx". More...
 
virtual void FitChisquare (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 Minimization function for H1s using a Chisquare method Default method (function evaluated at center of bin) for each point the cache contains the following info -1D : bc,e,xc (bin content, error, x of center of bin) -2D : bc,e,xc,yc -3D : bc,e,xc,yc,zc. More...
 
virtual void FitChisquareI (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 Minimization function for H1s using a Chisquare method The "I"ntegral method is used for each point the cache contains the following info -1D : bc,e,xc,xw (bin content, error, x of center of bin, x bin width of bin) -2D : bc,e,xc,xw,yc,yw -3D : bc,e,xc,xw,yc,yw,zc,zw. More...
 
virtual void FitLikelihood (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 Minimization function for H1s using a Likelihood method*-*-*-*-*-* Basically, it forms the likelihood by determining the Poisson probability that given a number of entries in a particular bin, the fit would predict it's value. More...
 
virtual void FitLikelihoodI (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 Minimization function for H1s using a Likelihood method*-*-*-*-*-* Basically, it forms the likelihood by determining the Poisson probability that given a number of entries in a particular bin, the fit would predict it's value. More...
 
virtual void FixParameter (Int_t ipar)
 Fixes parameter number ipar. More...
 
virtual Double_tGetCovarianceMatrix () const
 return a pointer to the covariance matrix More...
 
virtual Double_t GetCovarianceMatrixElement (Int_t i, Int_t j) const
 return element i,j from the covariance matrix More...
 
virtual Int_t GetErrors (Int_t ipar, Double_t &eplus, Double_t &eminus, Double_t &eparab, Double_t &globcc) const
 Return errors after MINOs not implemented. More...
 
virtual Int_t GetNumberFreeParameters () const
 return the number of free parameters More...
 
virtual Int_t GetNumberTotalParameters () const
 return the total number of parameters (free + fixed) More...
 
virtual Double_t GetParameter (Int_t ipar) const
 return current value of parameter ipar More...
 
virtual Int_t GetParameter (Int_t ipar, char *name, Double_t &value, Double_t &verr, Double_t &vlow, Double_t &vhigh) const
 Get various ipar parameter attributs: More...
 
virtual Double_t GetParError (Int_t ipar) const
 return error of parameter ipar More...
 
virtual const char * GetParName (Int_t ipar) const
 return name of parameter ipar More...
 
Double_tGetPL0 () const
 
virtual Int_t GetStats (Double_t &amin, Double_t &edm, Double_t &errdef, Int_t &nvpar, Int_t &nparx) const
 return global fit parameters amin : chisquare edm : estimated distance to minimum errdef nvpar : number of variable parameters nparx : total number of parameters More...
 
virtual Double_t GetSumLog (Int_t)
 return Sum(log(i) i=0,n used by log likelihood fits More...
 
Double_tGetZ () const
 
void InvertZ (Int_t)
 Inverts packed diagonal matrix Z by square-root method. More...
 
virtual Bool_t IsFixed (Int_t ipar) const
 return kTRUE if parameter ipar is fixed, kFALSE othersise) More...
 
Int_t Minimize ()
 
virtual void PrintResults (Int_t k, Double_t p) const
 Prints fit results. More...
 
virtual void ReleaseParameter (Int_t ipar)
 Releases parameter number ipar. More...
 
void SetData (Double_t *, Int_t, Int_t)
 Sets pointer to data array provided by user. More...
 
virtual void SetFitMethod (const char *name)
 ret fit method (chisquare or loglikelihood) More...
 
virtual Int_t SetParameter (Int_t ipar, const char *parname, Double_t value, Double_t verr, Double_t vlow, Double_t vhigh)
 Sets for prameter number ipar initial parameter value, name parname, initial error verr and limits vlow and vhigh If vlow = vhigh but not equil to zero, parameter will be fixed. More...
 
void SetParNumber (Int_t ParNum)
 
Int_t SGZ ()
 Evaluates objective function ( chi-square ), gradients and Z-matrix using data provided by user via TFumili::SetData. More...
 
- Public Member Functions inherited from TVirtualFitter
 TVirtualFitter ()
 Default constructor. More...
 
virtual ~TVirtualFitter ()
 Cleanup virtual fitter. More...
 
virtual void GetConfidenceIntervals (Int_t n, Int_t ndim, const Double_t *x, Double_t *ci, Double_t cl=0.95)
 return confidence intervals in array x of dimension ndim implemented in TFitter and TLinearFitter More...
 
virtual void GetConfidenceIntervals (TObject *obj, Double_t cl=0.95)
 return confidence intervals in TObject obj implemented in TFitter and TLinearFitter More...
 
virtual FCNFunc_t GetFCN ()
 
virtual Foption_t GetFitOption () const
 
TMethodCallGetMethodCall () const
 
virtual TObjectGetObjectFit () const
 
virtual TObjectGetUserFunc () const
 
virtual Int_t GetXfirst () const
 
virtual Int_t GetXlast () const
 
virtual Int_t GetYfirst () const
 
virtual Int_t GetYlast () const
 
virtual Int_t GetZfirst () const
 
virtual Int_t GetZlast () const
 
virtual Double_tSetCache (Int_t npoints, Int_t psize)
 Initialize the cache array npoints is the number of points to be stored (or already stored) in the cache psize is the number of elements per point. More...
 
virtual void SetFCN (void(*fcn)(Int_t &, Double_t *, Double_t &f, Double_t *, Int_t))
 To set the address of the minimization objective function called by the native compiler (see function below when called by CINT) More...
 
virtual void SetFitOption (Foption_t option)
 
virtual void SetObjectFit (TObject *obj)
 
virtual void SetUserFunc (TObject *userfunc)
 
virtual void SetXfirst (Int_t first)
 
virtual void SetXlast (Int_t last)
 
virtual void SetYfirst (Int_t first)
 
virtual void SetYlast (Int_t last)
 
virtual void SetZfirst (Int_t first)
 
virtual void SetZlast (Int_t last)
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TString &name, const TString &title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
virtual ~TNamed ()
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual void Print (Option_t *option="") const
 Print TNamed name and title. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
Bool_t IsOnHeap () const
 
Bool_t IsZombie () const
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
void SetBit (UInt_t f)
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Private Attributes

Double_tfA
 
Double_t fAKAPPA
 
Double_tfAMN
 
Double_tfAMX
 
TStringfANames
 
Double_tfCmPar
 
TString fCword
 
Double_tfDA
 
Bool_t fDEBUG
 
Double_tfDF
 
Int_t fENDFLG
 
Double_t fEPS
 
Double_tfEXDA
 
Double_tfGr
 
Bool_t fGRAD
 
Double_t fGT
 
Int_t fINDFLG [5]
 
Int_t fLastFixed
 
Bool_t fLogLike
 
Int_t fMaxParam
 
Int_t fNED1
 
Int_t fNED12
 
Int_t fNED2
 
Int_t fNfcn
 
Int_t fNlimMul
 
Int_t fNlog
 
Int_t fNmaxIter
 
Int_t fNpar
 
Int_t fNstepDec
 
Bool_t fNumericDerivatives
 
Double_tfParamError
 
Double_tfPL
 
Double_tfPL0
 
Double_tfR
 
Double_t fRP
 
Double_t fS
 
Double_tfSumLog
 
Bool_t fWARN
 
Double_tfZ
 
Double_tfZ0
 

Additional Inherited Members

- Public Types inherited from TVirtualFitter
typedef void(* FCNFunc_t) (Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 
- Public Types inherited from TObject
enum  { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4),
  kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 
- Static Public Member Functions inherited from TVirtualFitter
static TVirtualFitterFitter (TObject *obj, Int_t maxpar=25)
 Static function returning a pointer to the current fitter. More...
 
static const char * GetDefaultFitter ()
 static: return the name of the default fitter More...
 
static Double_t GetErrorDef ()
 static: Return the Error Definition More...
 
static TVirtualFitterGetFitter ()
 static: return the current Fitter More...
 
static Int_t GetMaxIterations ()
 static: Return the maximum number of iterations actually max number of function calls More...
 
static Double_t GetPrecision ()
 static: Return the fit relative precision More...
 
static void SetDefaultFitter (const char *name="")
 static: set name of default fitter More...
 
static void SetErrorDef (Double_t errdef=1)
 static: Set the Error Definition (default=1) For Minuit this is the value passed with the "SET ERR" command (see https://cern-tex.web.cern.ch/cern-tex/minuit/node18.html) More...
 
static void SetFitter (TVirtualFitter *fitter, Int_t maxpar=25)
 Static function to set an alternative fitter. More...
 
static void SetMaxIterations (Int_t niter=5000)
 static: Set the maximum number of function calls for the minimization algorithm For example for MIGRAD this is the maxcalls value passed as first argument (see https://cern-tex.web.cern.ch/cern-tex/minuit/node18.html ) More...
 
static void SetPrecision (Double_t prec=1e-6)
 static: Set the tolerance used in the minimization algorithm For example for MIGRAD this is tolerance value passed as second argument (see https://cern-tex.web.cern.ch/cern-tex/minuit/node18.html ) More...
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Protected Member Functions inherited from TVirtualFitter
 TVirtualFitter (const TVirtualFitter &tvf)
 copy constructor More...
 
TVirtualFitteroperator= (const TVirtualFitter &tvf)
 assignment operator More...
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 
- Protected Attributes inherited from TVirtualFitter
Double_tfCache
 
Int_t fCacheSize
 
void(* fFCN )(Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag)
 
TMethodCallfMethodCall
 
Int_t fNpoints
 
TObjectfObjectFit
 
Foption_t fOption
 
Int_t fPointSize
 
TObjectfUserFunc
 
Int_t fXfirst
 
Int_t fXlast
 
Int_t fYfirst
 
Int_t fYlast
 
Int_t fZfirst
 
Int_t fZlast
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 

#include <TFumili.h>

Inheritance diagram for TFumili:
[legend]

Constructor & Destructor Documentation

◆ TFumili()

TFumili::TFumili ( Int_t  maxpar = 25)

Definition at line 129 of file TFumili.cxx.

◆ ~TFumili()

TFumili::~TFumili ( )
virtual

TFumili destructor.

Definition at line 212 of file TFumili.cxx.

Member Function Documentation

◆ BuildArrays()

void TFumili::BuildArrays ( )

Allocates memory for internal arrays.

Called by TFumili::TFumili

Definition at line 174 of file TFumili.cxx.

◆ Chisquare()

Double_t TFumili::Chisquare ( Int_t  npar,
Double_t params 
) const
virtual

return a chisquare equivalent

Implements TVirtualFitter.

Definition at line 222 of file TFumili.cxx.

◆ Clear()

void TFumili::Clear ( Option_t opt = "")
virtual

Resets all parameter names, values and errors to zero.

Argument opt is ignored

NB: this procedure doesn't reset parameter limits

Implements TVirtualFitter.

Definition at line 239 of file TFumili.cxx.

◆ DeleteArrays()

void TFumili::DeleteArrays ( )

Deallocates memory.

Called from destructor TFumili::~TFumili

Definition at line 261 of file TFumili.cxx.

◆ Derivatives()

void TFumili::Derivatives ( Double_t df,
Double_t fX 
)

Calculates partial derivatives of theoretical function.

Input: fX - vector of data point Output: DF - array of derivatives

ARITHM.F Converted from CERNLIB

Definition at line 293 of file TFumili.cxx.

◆ Eval()

Int_t TFumili::Eval ( Int_t npar,
Double_t grad,
Double_t fval,
Double_t par,
Int_t  flag 
)

Evaluate the minimisation function Input parameters: npar: number of currently variable parameters par: array of (constant and variable) parameters flag: Indicates what is to be calculated grad: array of gradients Output parameters: fval: The calculated function value.

grad: The vector of first derivatives.

The meaning of the parameters par is of course defined by the user, who uses the values of those parameters to calculate their function value. The starting values must be specified by the user. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Inside FCN user has to define Z-matrix by means TFumili::GetZ and TFumili::Derivatives, set theoretical function by means of TFumili::SetUserFunc, but first - pass number of parameters by TFumili::SetParNumber !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Later values are determined by Fumili as it searches for the minimum or performs whatever analysis is requested by the user.

The default function calls the function specified in SetFCN

Definition at line 352 of file TFumili.cxx.

◆ EvalTFN()

Double_t TFumili::EvalTFN ( Double_t ,
Double_t X 
)

Evaluate theoretical function df: array of partial derivatives X: vector of theoretical function argument.

Definition at line 364 of file TFumili.cxx.

◆ ExecuteCommand()

Int_t TFumili::ExecuteCommand ( const char *  command,
Double_t args,
Int_t  nargs 
)
virtual

Execute MINUIT commands.

MINImize, SIMplex, MIGrad and FUMili all will call TFumili::Minimize method.

For full command list see MINUIT. Reference Manual. CERN Program Library Long Writeup D506.

Improvement and errors calculation are not yet implemented as well as Monte-Carlo seeking and minimization. Contour commands are also unsupported.

command : command string args : array of arguments nargs : number of arguments

Implements TVirtualFitter.

Definition at line 394 of file TFumili.cxx.

◆ ExecuteSetCommand()

Int_t TFumili::ExecuteSetCommand ( Int_t  nargs)

Called from TFumili::ExecuteCommand in case of "SET xxx" and "SHOW xxx".

Definition at line 565 of file TFumili.cxx.

◆ FitChisquare()

void TFumili::FitChisquare ( Int_t npar,
Double_t gin,
Double_t f,
Double_t u,
Int_t  flag 
)
virtual

Minimization function for H1s using a Chisquare method Default method (function evaluated at center of bin) for each point the cache contains the following info -1D : bc,e,xc (bin content, error, x of center of bin) -2D : bc,e,xc,yc -3D : bc,e,xc,yc,zc.

Definition at line 1770 of file TFumili.cxx.

◆ FitChisquareI()

void TFumili::FitChisquareI ( Int_t npar,
Double_t gin,
Double_t f,
Double_t u,
Int_t  flag 
)
virtual

Minimization function for H1s using a Chisquare method The "I"ntegral method is used for each point the cache contains the following info -1D : bc,e,xc,xw (bin content, error, x of center of bin, x bin width of bin) -2D : bc,e,xc,xw,yc,yw -3D : bc,e,xc,xw,yc,yw,zc,zw.

Definition at line 1842 of file TFumili.cxx.

◆ FitLikelihood()

void TFumili::FitLikelihood ( Int_t npar,
Double_t gin,
Double_t f,
Double_t u,
Int_t  flag 
)
virtual

Minimization function for H1s using a Likelihood method*-*-*-*-*-* Basically, it forms the likelihood by determining the Poisson probability that given a number of entries in a particular bin, the fit would predict it's value.

This is then done for each bin, and the sum of the logs is taken as the likelihood. Default method (function evaluated at center of bin) for each point the cache contains the following info -1D : bc,e,xc (bin content, error, x of center of bin) -2D : bc,e,xc,yc -3D : bc,e,xc,yc,zc

Definition at line 1917 of file TFumili.cxx.

◆ FitLikelihoodI()

void TFumili::FitLikelihoodI ( Int_t npar,
Double_t gin,
Double_t f,
Double_t u,
Int_t  flag 
)
virtual

Minimization function for H1s using a Likelihood method*-*-*-*-*-* Basically, it forms the likelihood by determining the Poisson probability that given a number of entries in a particular bin, the fit would predict it's value.

This is then done for each bin, and the sum of the logs is taken as the likelihood. The "I"ntegral method is used for each point the cache contains the following info -1D : bc,e,xc,xw (bin content, error, x of center of bin, x bin width of bin) -2D : bc,e,xc,xw,yc,yw -3D : bc,e,xc,xw,yc,yw,zc,zw

Definition at line 2005 of file TFumili.cxx.

◆ FixParameter()

void TFumili::FixParameter ( Int_t  ipar)
virtual

Fixes parameter number ipar.

Implements TVirtualFitter.

Definition at line 781 of file TFumili.cxx.

◆ GetCovarianceMatrix()

Double_t * TFumili::GetCovarianceMatrix ( ) const
virtual

return a pointer to the covariance matrix

Implements TVirtualFitter.

Definition at line 791 of file TFumili.cxx.

◆ GetCovarianceMatrixElement()

Double_t TFumili::GetCovarianceMatrixElement ( Int_t  i,
Int_t  j 
) const
virtual

return element i,j from the covariance matrix

Implements TVirtualFitter.

Definition at line 800 of file TFumili.cxx.

◆ GetErrors()

Int_t TFumili::GetErrors ( Int_t  ipar,
Double_t eplus,
Double_t eminus,
Double_t eparab,
Double_t globcc 
) const
virtual

Return errors after MINOs not implemented.

Implements TVirtualFitter.

Definition at line 890 of file TFumili.cxx.

◆ GetNumberFreeParameters()

Int_t TFumili::GetNumberFreeParameters ( ) const
virtual

return the number of free parameters

Implements TVirtualFitter.

Definition at line 822 of file TFumili.cxx.

◆ GetNumberTotalParameters()

Int_t TFumili::GetNumberTotalParameters ( ) const
virtual

return the total number of parameters (free + fixed)

Implements TVirtualFitter.

Definition at line 814 of file TFumili.cxx.

◆ GetParameter() [1/2]

Double_t TFumili::GetParameter ( Int_t  ipar) const
virtual

return current value of parameter ipar

Implements TVirtualFitter.

Definition at line 843 of file TFumili.cxx.

◆ GetParameter() [2/2]

Int_t TFumili::GetParameter ( Int_t  ipar,
char *  cname,
Double_t value,
Double_t verr,
Double_t vlow,
Double_t vhigh 
) const
virtual

Get various ipar parameter attributs:

cname: parameter name value: parameter value verr: parameter error vlow: lower limit vhigh: upper limit WARNING! parname must be suitably dimensionned in the calling function.

Implements TVirtualFitter.

Definition at line 860 of file TFumili.cxx.

◆ GetParError()

Double_t TFumili::GetParError ( Int_t  ipar) const
virtual

return error of parameter ipar

Implements TVirtualFitter.

Definition at line 834 of file TFumili.cxx.

◆ GetParName()

const char * TFumili::GetParName ( Int_t  ipar) const
virtual

return name of parameter ipar

Implements TVirtualFitter.

Definition at line 880 of file TFumili.cxx.

◆ GetPL0()

Double_t* TFumili::GetPL0 ( ) const
inline

Definition at line 103 of file TFumili.h.

◆ GetStats()

Int_t TFumili::GetStats ( Double_t amin,
Double_t edm,
Double_t errdef,
Int_t nvpar,
Int_t nparx 
) const
virtual

return global fit parameters amin : chisquare edm : estimated distance to minimum errdef nvpar : number of variable parameters nparx : total number of parameters

Implements TVirtualFitter.

Definition at line 912 of file TFumili.cxx.

◆ GetSumLog()

Double_t TFumili::GetSumLog ( Int_t  n)
virtual

return Sum(log(i) i=0,n used by log likelihood fits

Implements TVirtualFitter.

Definition at line 931 of file TFumili.cxx.

◆ GetZ()

Double_t* TFumili::GetZ ( ) const
inline

Definition at line 110 of file TFumili.h.

◆ InvertZ()

void TFumili::InvertZ ( Int_t  n)

Inverts packed diagonal matrix Z by square-root method.

Matrix elements corresponding to fix parameters are removed.

n: number of variable parameters

Definition at line 958 of file TFumili.cxx.

◆ IsFixed()

Bool_t TFumili::IsFixed ( Int_t  ipar) const
virtual

return kTRUE if parameter ipar is fixed, kFALSE othersise)

Implements TVirtualFitter.

Definition at line 1076 of file TFumili.cxx.

◆ Minimize()

Int_t TFumili::Minimize ( )

Definition at line 1089 of file TFumili.cxx.

◆ PrintResults()

void TFumili::PrintResults ( Int_t  ikode,
Double_t  p 
) const
virtual

Prints fit results.

ikode is the type of printing parameters p is function value

ikode = 1 - print values, errors and limits ikode = 2 - print values, errors and steps ikode = 3 - print values, errors, steps and derivatives ikode = 4 - print only values and errors

Implements TVirtualFitter.

Definition at line 1509 of file TFumili.cxx.

◆ ReleaseParameter()

void TFumili::ReleaseParameter ( Int_t  ipar)
virtual

Releases parameter number ipar.

Implements TVirtualFitter.

Definition at line 1613 of file TFumili.cxx.

◆ SetData()

void TFumili::SetData ( Double_t exdata,
Int_t  numpoints,
Int_t  vecsize 
)

Sets pointer to data array provided by user.

Necessary if SetFCN is not called.

numpoints: number of experimental points vecsize: size of data point vector + 2 (for N-dimensional fit vecsize=N+2) exdata: data array with following format

exdata[0] = ExpValue_0 - experimental data value number 0 exdata[1] = ExpSigma_0 - error of value number 0 exdata[2] = X_0[0] exdata[3] = X_0[1] ......... exdata[vecsize-1] = X_0[vecsize-3] exdata[vecsize] = ExpValue_1 exdata[vecsize+1] = ExpSigma_1 exdata[vecsize+2] = X_1[0] ......... exdata[vecsize*(numpoints-1)] = ExpValue_(numpoints-1) ......... exdata[vecsize*numpoints-1] = X_(numpoints-1)[vecsize-3]

Definition at line 1645 of file TFumili.cxx.

◆ SetFitMethod()

void TFumili::SetFitMethod ( const char *  name)
virtual

ret fit method (chisquare or loglikelihood)

Implements TVirtualFitter.

Definition at line 1657 of file TFumili.cxx.

◆ SetParameter()

Int_t TFumili::SetParameter ( Int_t  ipar,
const char *  parname,
Double_t  value,
Double_t  verr,
Double_t  vlow,
Double_t  vhigh 
)
virtual

Sets for prameter number ipar initial parameter value, name parname, initial error verr and limits vlow and vhigh If vlow = vhigh but not equil to zero, parameter will be fixed.

If vlow = vhigh = 0, parameter is released and its limits are discarded

Implements TVirtualFitter.

Definition at line 1672 of file TFumili.cxx.

◆ SetParNumber()

void TFumili::SetParNumber ( Int_t  ParNum)
inline

Definition at line 120 of file TFumili.h.

◆ SGZ()

Int_t TFumili::SGZ ( )

Evaluates objective function ( chi-square ), gradients and Z-matrix using data provided by user via TFumili::SetData.

Definition at line 1702 of file TFumili.cxx.

Member Data Documentation

◆ fA

Double_t* TFumili::fA
private

Definition at line 52 of file TFumili.h.

◆ fAKAPPA

Double_t TFumili::fAKAPPA
private

Definition at line 68 of file TFumili.h.

◆ fAMN

Double_t* TFumili::fAMN
private

Definition at line 59 of file TFumili.h.

◆ fAMX

Double_t* TFumili::fAMX
private

Definition at line 58 of file TFumili.h.

◆ fANames

TString* TFumili::fANames
private

Definition at line 70 of file TFumili.h.

◆ fCmPar

Double_t* TFumili::fCmPar
private

Definition at line 63 of file TFumili.h.

◆ fCword

TString TFumili::fCword
private

Definition at line 71 of file TFumili.h.

◆ fDA

Double_t* TFumili::fDA
private

Definition at line 57 of file TFumili.h.

◆ fDEBUG

Bool_t TFumili::fDEBUG
private

Definition at line 38 of file TFumili.h.

◆ fDF

Double_t* TFumili::fDF
private

Definition at line 62 of file TFumili.h.

◆ fENDFLG

Int_t TFumili::fENDFLG
private

Definition at line 32 of file TFumili.h.

◆ fEPS

Double_t TFumili::fEPS
private

Definition at line 66 of file TFumili.h.

◆ fEXDA

Double_t* TFumili::fEXDA
private

Definition at line 49 of file TFumili.h.

◆ fGr

Double_t* TFumili::fGr
private

Definition at line 46 of file TFumili.h.

◆ fGRAD

Bool_t TFumili::fGRAD
private

Definition at line 36 of file TFumili.h.

◆ fGT

Double_t TFumili::fGT
private

Definition at line 69 of file TFumili.h.

◆ fINDFLG

Int_t TFumili::fINDFLG[5]
private

Definition at line 33 of file TFumili.h.

◆ fLastFixed

Int_t TFumili::fLastFixed
private

Definition at line 31 of file TFumili.h.

◆ fLogLike

Bool_t TFumili::fLogLike
private

Definition at line 39 of file TFumili.h.

◆ fMaxParam

Int_t TFumili::fMaxParam
private

Definition at line 21 of file TFumili.h.

◆ fNED1

Int_t TFumili::fNED1
private

Definition at line 24 of file TFumili.h.

◆ fNED12

Int_t TFumili::fNED12
private

Definition at line 26 of file TFumili.h.

◆ fNED2

Int_t TFumili::fNED2
private

Definition at line 25 of file TFumili.h.

◆ fNfcn

Int_t TFumili::fNfcn
private

Definition at line 23 of file TFumili.h.

◆ fNlimMul

Int_t TFumili::fNlimMul
private

Definition at line 29 of file TFumili.h.

◆ fNlog

Int_t TFumili::fNlog
private

Definition at line 22 of file TFumili.h.

◆ fNmaxIter

Int_t TFumili::fNmaxIter
private

Definition at line 30 of file TFumili.h.

◆ fNpar

Int_t TFumili::fNpar
private

Definition at line 27 of file TFumili.h.

◆ fNstepDec

Int_t TFumili::fNstepDec
private

Definition at line 28 of file TFumili.h.

◆ fNumericDerivatives

Bool_t TFumili::fNumericDerivatives
private

Definition at line 40 of file TFumili.h.

◆ fParamError

Double_t* TFumili::fParamError
private

Definition at line 47 of file TFumili.h.

◆ fPL

Double_t* TFumili::fPL
private

Definition at line 54 of file TFumili.h.

◆ fPL0

Double_t* TFumili::fPL0
private

Definition at line 53 of file TFumili.h.

◆ fR

Double_t* TFumili::fR
private

Definition at line 60 of file TFumili.h.

◆ fRP

Double_t TFumili::fRP
private

Definition at line 67 of file TFumili.h.

◆ fS

Double_t TFumili::fS
private

Definition at line 65 of file TFumili.h.

◆ fSumLog

Double_t* TFumili::fSumLog
private

Definition at line 48 of file TFumili.h.

◆ fWARN

Bool_t TFumili::fWARN
private

Definition at line 37 of file TFumili.h.

◆ fZ

Double_t* TFumili::fZ
private

Definition at line 45 of file TFumili.h.

◆ fZ0

Double_t* TFumili::fZ0
private

Definition at line 42 of file TFumili.h.


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