ROOT 6.14/05 Reference Guide |
Public Member Functions | |
TFitter (Int_t maxpar=25) | |
Default constructor. More... | |
virtual | ~TFitter () |
Default destructor. More... | |
virtual Double_t | Chisquare (Int_t npar, Double_t *params) const |
virtual void | Clear (Option_t *option="") |
reset the fitter environment More... | |
virtual Int_t | ExecuteCommand (const char *command, Double_t *args, Int_t nargs) |
Execute a fitter command; command : command string args : list of nargs command arguments. More... | |
virtual void | FixParameter (Int_t ipar) |
Fix parameter ipar. More... | |
virtual void | GetConfidenceIntervals (Int_t n, Int_t ndim, const Double_t *x, Double_t *ci, Double_t cl=0.95) |
Computes point-by-point confidence intervals for the fitted function Parameters: n - number of points ndim - dimensions of points x - points, at which to compute the intervals, for ndim > 1 should be in order: (x0,y0, x1, y1, ... More... | |
virtual void | GetConfidenceIntervals (TObject *obj, Double_t cl=0.95) |
Computes confidence intervals at level cl. More... | |
virtual Double_t * | GetCovarianceMatrix () 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 current errors for a parameter ipar : parameter number eplus : upper error eminus : lower error eparab : parabolic error globcc : global correlation coefficient More... | |
TMinuit * | GetMinuit () const |
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 |
return current values for a parameter ipar : parameter number parname : parameter name value : initial parameter value verr : initial error for this parameter vlow : lower value for the parameter vhigh : upper value for the parameter WARNING! parname must be suitably dimensionned in the calling function. 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... | |
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 i) |
return Sum(log(i) i=0,n used by log likelihood fits More... | |
virtual Bool_t | IsFixed (Int_t ipar) const |
return kTRUE if parameter ipar is fixed, kFALSE othersise) More... | |
virtual void | PrintResults (Int_t level, Double_t amin) const |
Print fit results. More... | |
virtual void | ReleaseParameter (Int_t ipar) |
Release parameter ipar. More... | |
virtual void | SetFCN (void(*fcn)(Int_t &, Double_t *, Double_t &f, Double_t *, Int_t)) |
Specify the address of the fitting algorithm. 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) |
set initial values for a parameter ipar : parameter number parname : parameter name value : initial parameter value verr : initial error for this parameter vlow : lower value for the parameter vhigh : upper value for the parameter More... | |
Public Member Functions inherited from TVirtualFitter | |
TVirtualFitter () | |
Default constructor. More... | |
virtual | ~TVirtualFitter () |
Cleanup virtual fitter. More... | |
virtual FCNFunc_t | GetFCN () |
virtual Foption_t | GetFitOption () const |
TMethodCall * | GetMethodCall () const |
virtual TObject * | GetObjectFit () const |
virtual TObject * | GetUserFunc () 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_t * | SetCache (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 | 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 () |
TNamed destructor. More... | |
virtual TObject * | Clone (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... | |
TNamed & | operator= (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... | |
ULong_t | CheckedHash () |
Checked and record whether for this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. 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 TObject * | DrawClone (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 TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () 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_t * | GetOption () 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... | |
Bool_t | HasInconsistentHash () const |
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. 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... | |
R__ALWAYS_INLINE Bool_t | IsOnHeap () const |
R__ALWAYS_INLINE 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... | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (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... | |
R__ALWAYS_INLINE 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 Member Functions | |
TFitter (const TFitter &) | |
TFitter & | operator= (const TFitter &) |
Private Attributes | |
Double_t * | fCovar |
TMinuit * | fMinuit |
Int_t | fNlog |
Double_t * | fSumLog |
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, kInconsistent = 0x08000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EDeprecatedStatusBits { kObjInCanvas = BIT(3) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = 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 TVirtualFitter * | Fitter (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 TVirtualFitter * | GetFitter () |
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... | |
TVirtualFitter & | operator= (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_t * | fCache |
Int_t | fCacheSize |
void(* | fFCN )(Int_t &npar, Double_t *gin, Double_t &f, Double_t *u, Int_t flag) |
TMethodCall * | fMethodCall |
Int_t | fNpoints |
TObject * | fObjectFit |
Foption_t | fOption |
Int_t | fPointSize |
TObject * | fUserFunc |
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 <TFitter.h>
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private |
TFitter::TFitter | ( | Int_t | maxpar = 25 | ) |
Default constructor.
Definition at line 36 of file TFitter.cxx.
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virtual |
Default destructor.
Definition at line 48 of file TFitter.cxx.
Implements TVirtualFitter.
Definition at line 58 of file TFitter.cxx.
Execute a fitter command; command : command string args : list of nargs command arguments.
Implements TVirtualFitter.
Definition at line 85 of file TFitter.cxx.
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virtual |
Computes point-by-point confidence intervals for the fitted function Parameters: n - number of points ndim - dimensions of points x - points, at which to compute the intervals, for ndim > 1 should be in order: (x0,y0, x1, y1, ...
xn, yn) ci - computed intervals are returned in this array cl - confidence level, default=0.95 NOTE, that the intervals are approximate for nonlinear(in parameters) models
Reimplemented from TVirtualFitter.
Definition at line 113 of file TFitter.cxx.
Computes confidence intervals at level cl.
Default is 0.95 The TObject parameter can be a TGraphErrors, a TGraph2DErrors or a TH1,2,3. For Graphs, confidence intervals are computed for each point, the value of the graph at that point is set to the function value at that point, and the graph y-errors (or z-errors) are set to the value of the confidence interval at that point. For Histograms, confidence intervals are computed for each bin center The bin content of this bin is then set to the function value at the bin center, and the bin error is set to the confidence interval value. NOTE: confidence intervals are approximate for nonlinear models!
Allowed combinations: Fitted object Passed object TGraph TGraphErrors, TH1 TGraphErrors, AsymmErrors TGraphErrors, TH1 TH1 TGraphErrors, TH1 TGraph2D TGraph2DErrors, TH2 TGraph2DErrors TGraph2DErrors, TH2 TH2 TGraph2DErrors, TH2 TH3 TH3
Reimplemented from TVirtualFitter.
Definition at line 221 of file TFitter.cxx.
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virtual |
return a pointer to the covariance matrix
Implements TVirtualFitter.
Definition at line 371 of file TFitter.cxx.
return element i,j from the covariance matrix
Implements TVirtualFitter.
Definition at line 383 of file TFitter.cxx.
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virtual |
return current errors for a parameter ipar : parameter number eplus : upper error eminus : lower error eparab : parabolic error globcc : global correlation coefficient
Implements TVirtualFitter.
Definition at line 402 of file TFitter.cxx.
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virtual |
return the number of free parameters
Implements TVirtualFitter.
Definition at line 422 of file TFitter.cxx.
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virtual |
return the total number of parameters (free + fixed)
Implements TVirtualFitter.
Definition at line 414 of file TFitter.cxx.
return current value of parameter ipar
Implements TVirtualFitter.
Definition at line 445 of file TFitter.cxx.
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virtual |
return current values for a parameter ipar : parameter number parname : parameter name value : initial parameter value verr : initial error for this parameter vlow : lower value for the parameter vhigh : upper value for the parameter WARNING! parname must be suitably dimensionned in the calling function.
Implements TVirtualFitter.
Definition at line 465 of file TFitter.cxx.
return error of parameter ipar
Implements TVirtualFitter.
Definition at line 431 of file TFitter.cxx.
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virtual |
return name of parameter ipar
Implements TVirtualFitter.
Definition at line 477 of file TFitter.cxx.
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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 491 of file TFitter.cxx.
return Sum(log(i) i=0,n used by log likelihood fits
Implements TVirtualFitter.
Definition at line 502 of file TFitter.cxx.
return kTRUE if parameter ipar is fixed, kFALSE othersise)
Implements TVirtualFitter.
Definition at line 523 of file TFitter.cxx.
Specify the address of the fitting algorithm.
Reimplemented from TVirtualFitter.
Definition at line 550 of file TFitter.cxx.
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virtual |
ret fit method (chisquare or loglikelihood)
Implements TVirtualFitter.
Definition at line 560 of file TFitter.cxx.
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virtual |
set initial values for a parameter ipar : parameter number parname : parameter name value : initial parameter value verr : initial error for this parameter vlow : lower value for the parameter vhigh : upper value for the parameter
Implements TVirtualFitter.
Definition at line 581 of file TFitter.cxx.