RooFitResult is a container class to hold the input and output of a PDF fit to a dataset.

It contains:

Values of all constant parameters
Initial and final values of floating parameters with error
Correlation matrix and global correlation coefficients
NLL and EDM at mininum

No references to the fitted PDF and dataset are stored

Definition at line 40 of file RooFitResult.h.

Public Member Functions
	RooFitResult (const char name=0, const char title=0)
	Constructor with name and title.

	RooFitResult (const RooFitResult &other)
	Copy constructor.

virtual	~RooFitResult ()
	Destructor.

virtual TObject *	clone () const

virtual TObject *	Clone (const char *newname=0) const
	Make a clone of an object using the Streamer facility.

TMatrixDSym	conditionalCovarianceMatrix (const RooArgList &params) const
	Return a reduced covariance matrix, which is calculated as.

const RooArgList &	constPars () const
	Return list of constant parameters.

const RooArgList *	correlation (const char *parname) const
	Return the set of correlation coefficients of parameter 'par' with all other floating parameters.

Double_t	correlation (const char parname1, const char parname2) const
	Return the correlation between parameters 'par1' and 'par2'.

const RooArgList *	correlation (const RooAbsArg &par) const
	Return pointer to list of correlations of all parameters with par.

Double_t	correlation (const RooAbsArg &par1, const RooAbsArg &par2) const
	Return correlation between par1 and par2.

TH2 *	correlationHist (const char *name="correlation_matrix") const
	Return TH2D of correlation matrix.

const TMatrixDSym &	correlationMatrix () const
	Return correlation matrix ;.

const TMatrixDSym &	covarianceMatrix () const
	Return covariance matrix.

Int_t	covQual () const
	Return MINUIT quality code of covariance matrix.

RooAbsPdf *	createHessePdf (const RooArgSet &params) const
	Return a p.d.f that represents the fit result as a multi-variate probability densisty function on the floating fit parameters, including correlations.

virtual Int_t	defaultPrintContents (Option_t *opt) const
	Configure default contents to be printed.

virtual StyleOption	defaultPrintStyle (Option_t *opt) const
	Configure mapping of Print() arguments to RooPrintable print styles.

Double_t	edm () const
	Return estimated distance to minimum.

const RooArgList &	floatParsFinal () const
	Return list of floarting parameters after fit.

const RooArgList &	floatParsInit () const

const RooArgList *	globalCorr ()
	Return the list of all global correlations.

Double_t	globalCorr (const char *parname)
	Return the global correlation of the named parameter.

Double_t	globalCorr (const RooAbsArg &par)

bool	isIdentical (const RooFitResult &other, double tol=1e-6, double tolCorr=1e-4, bool verbose=true) const
	Return true if this fit result is identical to other within tolerances.

bool	isIdenticalNoCov (const RooFitResult &other, double tol=1e-6, bool verbose=true) const
	Return true if this fit result is identical to other within tolerances, ignoring the correlation matrix.

Double_t	minNll () const
	Return minimized -log(L) value.

Int_t	numInvalidNLL () const
	Return number of NLL evaluations with problems.

UInt_t	numStatusHistory () const

RooPlot *	plotOn (RooPlot frame, const RooAbsArg &par1, const RooAbsArg &par2, const char options="ME") const
	Add objects to a 2D plot.

RooPlot *	plotOn (RooPlot plot, const char parName1, const char parName2, const char options="ME") const
	Add objects to a 2D plot that represent the fit results for the two named parameters.

virtual void	Print (Option_t *options=0) const
	Print TNamed name and title.

virtual void	printArgs (std::ostream &os) const
	Print arguments of fit result, i.e. the parameters of the fit.

virtual void	printClassName (std::ostream &os) const
	Print class name of fit result.

void	printMultiline (std::ostream &os, Int_t contents, Bool_t verbose=kFALSE, TString indent="") const
	Print fit result to stream 'os'.

virtual void	printName (std::ostream &os) const
	Print name of fit result.

virtual void	printTitle (std::ostream &os) const
	Print title of fit result.

virtual void	printValue (std::ostream &os) const
	Print the value of the fit result, i.e.g the status, minimized FCN, edm and covariance quality code.

const RooArgList &	randomizePars () const
	Generate random perturbations of the final parameters using the covariance matrix.

TMatrixDSym	reducedCovarianceMatrix (const RooArgList &params) const
	Return a reduced covariance matrix (Note that Vred is a simple sub-matrix of V, row/columns are ordered to matched the convention given in input argument 'params'.

void	SetName (const char *name)
	Change name of RooFitResult object.

void	SetNameTitle (const char name, const char title)
	Change name and title of RooFitResult object.

Int_t	status () const
	Return MINUIT status code.

Int_t	statusCodeHistory (UInt_t icycle) const

const char *	statusLabelHistory (UInt_t icycle) const

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

virtual void	Clear (Option_t *option="")
	Set name and title to empty strings ("").

virtual Int_t	Compare (const TObject *obj) const
	Compare two TNamed objects.

virtual void	Copy (TObject &named) const
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

virtual const char *	GetName () const
	Returns name of object.

virtual const char *	GetTitle () const
	Returns title of object.

virtual ULong_t	Hash () const
	Return hash value for this object.

virtual Bool_t	IsSortable () const

virtual void	ls (Option_t *option="") const
	List TNamed name and title.

TNamed &	operator= (const TNamed &rhs)
	TNamed assignment operator.

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual void	Delete (Option_t *option="")
	Delete this object.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

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.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

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.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

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).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification.

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete[] (void *ptr)
	Operator delete [].

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.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

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.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Public Member Functions inherited from RooPrintable
	RooPrintable ()

virtual	~RooPrintable ()

virtual void	printAddress (std::ostream &os) const
	Print class name of object.

virtual void	printExtras (std::ostream &os) const
	Interface to print extras of object.

virtual void	printStream (std::ostream &os, Int_t contents, StyleOption style, TString indent="") const
	Print description of object on ostream, printing contents set by contents integer, which is interpreted as an OR of 'enum ContentsOptions' values and in the style given by 'enum StyleOption'.

virtual void	printTree (std::ostream &os, TString indent="") const
	Interface for tree structure printing of object.

Public Member Functions inherited from RooDirItem
	RooDirItem ()

	RooDirItem (const RooDirItem &)

virtual	~RooDirItem ()

Static Public Member Functions
static RooFitResult *	lastMinuitFit (const RooArgList &varList=RooArgList())
	Import the results of the last fit performed by gMinuit, interpreting the fit parameters as the given varList of parameters.

static RooFitResult *	prefitResult (const RooArgList &paramList)
	Import the results of the last fit performed by gMinuit, interpreting the fit parameters as the given varList of parameters.

Static Public Member Functions inherited from TObject
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Static Public Member Functions inherited from RooPrintable
static std::ostream &	defaultPrintStream (std::ostream *os=0)
	Return a reference to the current default stream to use in Print().

static void	nameFieldLength (Int_t newLen)
	Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount.

Protected Member Functions
Double_t	correlation (Int_t row, Int_t col) const
	Return a correlation matrix element addressed with numeric indices.

Double_t	covariance (Int_t row, Int_t col) const
	Return the covariance matrix element addressed with numeric indices.

void	fillCorrMatrix ()
	Internal utility method to extract the correlation matrix and the global correlation coefficients from the MINUIT memory buffer and fill the internal arrays.

void	fillCorrMatrix (const std::vector< double > &globalCC, const TMatrixDSym &corrs, const TMatrixDSym &covs)
	Function called by RooMinimizer.

void	fillLegacyCorrMatrix () const
	Sanity check.

void	fillPrefitCorrMatrix ()

void	setConstParList (const RooArgList &list)
	Fill the list of constant parameters.

void	setCovarianceMatrix (TMatrixDSym &V)
	Store externally provided correlation matrix in this RooFitResult ;.

void	setCovQual (Int_t val)

void	setEDM (Double_t val)

void	setFinalParList (const RooArgList &list)
	Fill the list of final values of the floating parameters.

void	setInitParList (const RooArgList &list)
	Fill the list of initial values of the floating parameters.

void	setMinNLL (Double_t val)

void	setNumInvalidNLL (Int_t val)

void	setStatus (Int_t val)

void	setStatusHistory (std::vector< std::pair< std::string, int > > &hist)

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).

void	MakeZombie ()

Protected Member Functions inherited from RooDirItem
void	appendToDir (TObject *obj, Bool_t forceMemoryResident=kFALSE)
	Append object to directory.

void	removeFromDir (TObject *obj)
	Remove object from directory it was added to.

Protected Attributes
TMatrixDSym *	_CM
	triangular matrix used for generate random perturbations

RooArgList *	_constPars

TList	_corrMatrix
	List of global correlation coefficients.

Int_t	_covQual

Double_t	_edm

RooArgList *	_finalPars

TVectorD *	_GC

RooArgList *	_globalCorr

RooArgList *	_initPars

TMatrixF *	_Lt
	List of floating parameters with most recent random perturbation applied.

Double_t	_minNLL

Int_t	_numBadNLL

RooArgList *	_randomPars
	Correlation matrix (list of RooArgLists)

Int_t	_status

std::vector< std::pair< std::string, int > >	_statusHistory

TMatrixDSym *	_VM

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from RooDirItem
TDirectory *	_dir {nullptr}

Friends
class	RooAbsPdf

class	RooMinimizer

class	RooMinuit

Additional Inherited Members
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) }

Public Types inherited from RooPrintable
enum	ContentsOption { kName =1 , kClassName =2 , kValue =4 , kArgs =8 , kExtras =16 , kAddress =32 , kTitle =64 , kCollectionHeader =128 }

enum	StyleOption { kInline =1 , kSingleLine =2 , kStandard =3 , kVerbose =4 , kTreeStructure =5 }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

Static Protected Attributes inherited from RooPrintable
static Int_t	_nameLength

#include <RooFitResult.h>

Inheritance diagram for RooFitResult:

[legend]

Constructor & Destructor Documentation

◆ RooFitResult() [1/2]

RooFitResult::RooFitResult	(	const char *	name = `0`,
		const char *	title = `0`
	)

Constructor with name and title.

Definition at line 69 of file RooFitResult.cxx.

◆ RooFitResult() [2/2]

RooFitResult::RooFitResult ( const RooFitResult & other )

Copy constructor.

Definition at line 80 of file RooFitResult.cxx.

◆ ~RooFitResult()

RooFitResult::~RooFitResult ( )

virtual

Destructor.

Definition at line 115 of file RooFitResult.cxx.

Member Function Documentation

◆ clone()

virtual TObject * RooFitResult::clone ( ) const

inlinevirtual

Definition at line 51 of file RooFitResult.h.

◆ Clone()

virtual TObject * RooFitResult::Clone ( const char * newname = 0 ) const

inlinevirtual

Make a clone of an object using the Streamer facility.

If newname is specified, this will be the name of the new object.

Reimplemented from TNamed.

Definition at line 46 of file RooFitResult.h.

◆ conditionalCovarianceMatrix()

TMatrixDSym RooFitResult::conditionalCovarianceMatrix ( const RooArgList & params ) const

Return a reduced covariance matrix, which is calculated as.

\[ V_\mathrm{red} = \bar{V_{22}} = V_{11} - V_{12} \cdot V_{22}^{-1} \cdot V_{21}, \]

where \( V_{11},V_{12},V_{21},V_{22} \) represent a block decomposition of the covariance matrix into observables that are propagated (labeled by index '1') and that are not propagated (labeled by index '2'), and \( \bar{V_{22}} \) is the Shur complement of \( V_{22} \), calculated as shown above.

(Note that \( V_\mathrm{red} \) is not a simple sub-matrix of \( V \))

Definition at line 1188 of file RooFitResult.cxx.

◆ constPars()

const RooArgList & RooFitResult::constPars ( ) const

inline

Return list of constant parameters.

Definition at line 103 of file RooFitResult.h.

◆ correlation() [1/5]

const RooArgList * RooFitResult::correlation ( const char * parname ) const

Return the set of correlation coefficients of parameter 'par' with all other floating parameters.

Definition at line 423 of file RooFitResult.cxx.

◆ correlation() [2/5]

Double_t RooFitResult::correlation	(	const char *	parname1,
		const char *	parname2
	)		const

Return the correlation between parameters 'par1' and 'par2'.

Definition at line 402 of file RooFitResult.cxx.

◆ correlation() [3/5]

const RooArgList * RooFitResult::correlation ( const RooAbsArg & par ) const

inline

Return pointer to list of correlations of all parameters with par.

Definition at line 122 of file RooFitResult.h.

◆ correlation() [4/5]

Double_t RooFitResult::correlation	(	const RooAbsArg &	par1,
		const RooAbsArg &	par2
	)		const

inline

Return correlation between par1 and par2.

Definition at line 118 of file RooFitResult.h.

◆ correlation() [5/5]

Double_t RooFitResult::correlation	(	Int_t	row,
		Int_t	col
	)		const

protected

Return a correlation matrix element addressed with numeric indices.

Definition at line 480 of file RooFitResult.cxx.

◆ correlationHist()

TH2 * RooFitResult::correlationHist ( const char * name = "correlation_matrix" ) const

Return TH2D of correlation matrix.

Definition at line 1101 of file RooFitResult.cxx.

◆ correlationMatrix()

const TMatrixDSym & RooFitResult::correlationMatrix ( ) const

Return correlation matrix ;.

Definition at line 1269 of file RooFitResult.cxx.

◆ covariance()

Double_t RooFitResult::covariance	(	Int_t	row,
		Int_t	col
	)		const

protected

Return the covariance matrix element addressed with numeric indices.

Definition at line 489 of file RooFitResult.cxx.

◆ covarianceMatrix()

const TMatrixDSym & RooFitResult::covarianceMatrix ( ) const

Return covariance matrix.

Definition at line 1127 of file RooFitResult.cxx.

◆ covQual()

Int_t RooFitResult::covQual ( ) const

inline

Return MINUIT quality code of covariance matrix.

Definition at line 87 of file RooFitResult.h.

◆ createHessePdf()

RooAbsPdf * RooFitResult::createHessePdf ( const RooArgSet & params ) const

Return a p.d.f that represents the fit result as a multi-variate probability densisty function on the floating fit parameters, including correlations.

Definition at line 1280 of file RooFitResult.cxx.

◆ defaultPrintContents()

Int_t RooFitResult::defaultPrintContents ( Option_t * opt ) const

virtual

Configure default contents to be printed.

Reimplemented from RooPrintable.

Definition at line 1459 of file RooFitResult.cxx.

◆ defaultPrintStyle()

RooPrintable::StyleOption RooFitResult::defaultPrintStyle ( Option_t * opt ) const

virtual

Configure mapping of Print() arguments to RooPrintable print styles.

Reimplemented from RooPrintable.

Definition at line 1468 of file RooFitResult.cxx.

◆ edm()

Double_t RooFitResult::edm ( ) const

inline

Return estimated distance to minimum.

Definition at line 95 of file RooFitResult.h.

◆ fillCorrMatrix() [1/2]

void RooFitResult::fillCorrMatrix ( )

protected

Internal utility method to extract the correlation matrix and the global correlation coefficients from the MINUIT memory buffer and fill the internal arrays.

Definition at line 714 of file RooFitResult.cxx.

◆ fillCorrMatrix() [2/2]

void RooFitResult::fillCorrMatrix	(	const std::vector< double > &	globalCC,
		const TMatrixDSym &	corrs,
		const TMatrixDSym &	covs
	)

protected

Function called by RooMinimizer.

Definition at line 596 of file RooFitResult.cxx.

◆ fillLegacyCorrMatrix()

void RooFitResult::fillLegacyCorrMatrix ( ) const

protected

Sanity check.

Definition at line 631 of file RooFitResult.cxx.

◆ fillPrefitCorrMatrix()

void RooFitResult::fillPrefitCorrMatrix ( )

protected

Definition at line 770 of file RooFitResult.cxx.

◆ floatParsFinal()

const RooArgList & RooFitResult::floatParsFinal ( ) const

inline

Return list of floarting parameters after fit.

Definition at line 111 of file RooFitResult.h.

◆ floatParsInit()

const RooArgList & RooFitResult::floatParsInit ( ) const

inline

Definition at line 107 of file RooFitResult.h.

◆ globalCorr() [1/3]

const RooArgList * RooFitResult::globalCorr ( )

Return the list of all global correlations.

Definition at line 466 of file RooFitResult.cxx.

◆ globalCorr() [2/3]

Double_t RooFitResult::globalCorr ( const char * parname )

Return the global correlation of the named parameter.

Definition at line 442 of file RooFitResult.cxx.

◆ globalCorr() [3/3]

Double_t RooFitResult::globalCorr ( const RooAbsArg & par )

inline

Definition at line 137 of file RooFitResult.h.

◆ isIdentical()

bool RooFitResult::isIdentical	(	const RooFitResult &	other,
		double	tol = `1e-6`,
		double	tolCorr = `1e-4`,
		bool	verbose = `true`
	)		const

Return true if this fit result is identical to other within tolerances.

Parameters

[in]	other	Fit result to test against.
[in]	tol	Relative tolerance for parameters and NLL.
[in]	tolCorr	absolute tolerance for correlation coefficients.
[in]	verbose	If this function will log to the standard output when comparisions fail.

Definition at line 877 of file RooFitResult.cxx.

◆ isIdenticalNoCov()

bool RooFitResult::isIdenticalNoCov	(	const RooFitResult &	other,
		double	tol = `1e-6`,
		bool	verbose = `true`
	)		const

Return true if this fit result is identical to other within tolerances, ignoring the correlation matrix.

Parameters

[in]	other	Fit result to test against.
[in]	tol	Relative tolerance for parameters and NLL.
[in]	verbose	If this function will log to the standard output when comparisions fail.

Definition at line 812 of file RooFitResult.cxx.

◆ lastMinuitFit()

RooFitResult * RooFitResult::lastMinuitFit ( const RooArgList & varList = RooArgList() )

static

Import the results of the last fit performed by gMinuit, interpreting the fit parameters as the given varList of parameters.

Definition at line 931 of file RooFitResult.cxx.

◆ minNll()

Double_t RooFitResult::minNll ( ) const

inline

Return minimized -log(L) value.

Definition at line 99 of file RooFitResult.h.

◆ numInvalidNLL()

Int_t RooFitResult::numInvalidNLL ( ) const

inline

Return number of NLL evaluations with problems.

Definition at line 91 of file RooFitResult.h.

◆ numStatusHistory()

UInt_t RooFitResult::numStatusHistory ( ) const

inline

Definition at line 82 of file RooFitResult.h.

◆ plotOn() [1/2]

RooPlot * RooFitResult::plotOn	(	RooPlot *	frame,
		const RooAbsArg &	par1,
		const RooAbsArg &	par2,
		const char *	options = `"ME"`
	)		const

inline

Add objects to a 2D plot.

Plot error ellipse in par1 and par2 on frame.

Definition at line 144 of file RooFitResult.h.

◆ plotOn() [2/2]

RooPlot * RooFitResult::plotOn	(	RooPlot *	frame,
		const char *	parName1,
		const char *	parName2,
		const char *	options = `"ME"`
	)		const

Add objects to a 2D plot that represent the fit results for the two named parameters.

The input frame with the objects added is returned, or zero in case of an error. Which objects are added are determined by the options string which should be a concatenation of the following (not case sensitive):

M - a marker at the best fit result
E - an error ellipse calculated at 1-sigma using the error matrix at the minimum
1 - the 1-sigma error bar for parameter 1
2 - the 1-sigma error bar for parameter 2
B - the bounding box for the error ellipse
H - a line and horizontal axis for reading off the correlation coefficient
V - a line and vertical axis for reading off the correlation coefficient
A - draw axes for reading off the correlation coefficients with the H or V options

You can change the attributes of objects in the returned RooPlot using the various RooPlot::getAttXxx(name) member functions, e.g.

plot->getAttLine("contour")->SetLineStyle(kDashed);

kDashed

@ kDashed

Definition TAttLine.h:48

Use plot->Print() for a list of all objects and their names (unfortunately most of the ROOT builtin graphics objects like TLine are unnamed). Drag the left mouse button along the labels of either axis button to interactively zoom in a plot.

Definition at line 248 of file RooFitResult.cxx.

◆ prefitResult()

RooFitResult * RooFitResult::prefitResult ( const RooArgList & paramList )

static

Import the results of the last fit performed by gMinuit, interpreting the fit parameters as the given varList of parameters.

Definition at line 1023 of file RooFitResult.cxx.

◆ Print()

virtual void RooFitResult::Print ( Option_t * option = 0 ) const

inlinevirtual

Print TNamed name and title.

Reimplemented from TNamed.

Definition at line 66 of file RooFitResult.h.

◆ printArgs()

void RooFitResult::printArgs ( std::ostream & os ) const

virtual

Print arguments of fit result, i.e. the parameters of the fit.

Reimplemented from RooPrintable.

Definition at line 1440 of file RooFitResult.cxx.

◆ printClassName()

void RooFitResult::printClassName ( std::ostream & os ) const

virtual

Print class name of fit result.

Reimplemented from RooPrintable.

Definition at line 1431 of file RooFitResult.cxx.

◆ printMultiline()

void RooFitResult::printMultiline	(	std::ostream &	os,
		Int_t	contents,
		Bool_t	verbose = `kFALSE`,
		TString	indent = `""`
	)		const

virtual

Print fit result to stream 'os'.

In Verbose mode, the constant parameters and the initial and final values of the floating parameters are printed. Standard mode only the final values of the floating parameters are printed

Reimplemented from RooPrintable.

Definition at line 501 of file RooFitResult.cxx.

◆ printName()

void RooFitResult::printName ( std::ostream & os ) const

virtual

Print name of fit result.

Reimplemented from RooPrintable.

Definition at line 1413 of file RooFitResult.cxx.

◆ printTitle()

void RooFitResult::printTitle ( std::ostream & os ) const

virtual

Print title of fit result.

Reimplemented from RooPrintable.

Definition at line 1422 of file RooFitResult.cxx.

◆ printValue()

void RooFitResult::printValue ( std::ostream & os ) const

virtual

Print the value of the fit result, i.e.g the status, minimized FCN, edm and covariance quality code.

Reimplemented from RooPrintable.

Definition at line 1450 of file RooFitResult.cxx.

◆ randomizePars()

const RooArgList & RooFitResult::randomizePars ( ) const

Generate random perturbations of the final parameters using the covariance matrix.

Return a list of floating parameter values that are perturbed from the final fit values by random amounts sampled from the covariance matrix.

The returned object is overwritten with each call and belongs to the RooFitResult. Uses the "square root method" to decompose the covariance matrix, which makes inverting it unnecessary.

Definition at line 346 of file RooFitResult.cxx.

◆ reducedCovarianceMatrix()

TMatrixDSym RooFitResult::reducedCovarianceMatrix ( const RooArgList & params ) const

Return a reduced covariance matrix (Note that Vred is a simple sub-matrix of V, row/columns are ordered to matched the convention given in input argument 'params'.

Definition at line 1139 of file RooFitResult.cxx.

◆ setConstParList()

void RooFitResult::setConstParList ( const RooArgList & list )

protected

Fill the list of constant parameters.

Definition at line 137 of file RooFitResult.cxx.

◆ setCovarianceMatrix()

void RooFitResult::setCovarianceMatrix ( TMatrixDSym & V )

protected

Store externally provided correlation matrix in this RooFitResult ;.

Definition at line 1067 of file RooFitResult.cxx.

◆ setCovQual()

void RooFitResult::setCovQual ( Int_t val )

inlineprotected

Definition at line 172 of file RooFitResult.h.

◆ setEDM()

void RooFitResult::setEDM ( Double_t val )

inlineprotected

Definition at line 170 of file RooFitResult.h.

◆ setFinalParList()

void RooFitResult::setFinalParList ( const RooArgList & list )

protected

Fill the list of final values of the floating parameters.

Definition at line 177 of file RooFitResult.cxx.

◆ setInitParList()

void RooFitResult::setInitParList ( const RooArgList & list )

protected

Fill the list of initial values of the floating parameters.

Definition at line 157 of file RooFitResult.cxx.

◆ setMinNLL()

void RooFitResult::setMinNLL ( Double_t val )

inlineprotected

Definition at line 169 of file RooFitResult.h.

◆ SetName()

void RooFitResult::SetName ( const char * name )

virtual

Change name of RooFitResult object.

Reimplemented from TNamed.

Definition at line 1391 of file RooFitResult.cxx.

◆ SetNameTitle()

void RooFitResult::SetNameTitle	(	const char *	name,
		const char *	title
	)

virtual

Change name and title of RooFitResult object.

Reimplemented from TNamed.

Definition at line 1402 of file RooFitResult.cxx.

◆ setNumInvalidNLL()

void RooFitResult::setNumInvalidNLL ( Int_t val )

inlineprotected

Definition at line 173 of file RooFitResult.h.

◆ setStatus()

void RooFitResult::setStatus ( Int_t val )

inlineprotected

Definition at line 171 of file RooFitResult.h.

◆ setStatusHistory()

void RooFitResult::setStatusHistory ( std::vector< std::pair< std::string, int > > & hist )

inlineprotected

Definition at line 178 of file RooFitResult.h.

◆ status()

Int_t RooFitResult::status ( ) const

inline

Return MINUIT status code.

Definition at line 78 of file RooFitResult.h.

◆ statusCodeHistory()

Int_t RooFitResult::statusCodeHistory ( UInt_t icycle ) const

Definition at line 197 of file RooFitResult.cxx.

◆ statusLabelHistory()

const char * RooFitResult::statusLabelHistory ( UInt_t icycle ) const

Definition at line 211 of file RooFitResult.cxx.

Friends And Related Symbol Documentation

◆ RooAbsPdf

friend class RooAbsPdf

friend

Definition at line 162 of file RooFitResult.h.

◆ RooMinimizer

friend class RooMinimizer

friend

Definition at line 164 of file RooFitResult.h.

◆ RooMinuit

friend class RooMinuit

friend

Definition at line 163 of file RooFitResult.h.

Member Data Documentation

◆ _CM

TMatrixDSym* RooFitResult::_CM

protected

triangular matrix used for generate random perturbations

Definition at line 198 of file RooFitResult.h.

◆ _constPars

RooArgList* RooFitResult::_constPars

protected

Definition at line 188 of file RooFitResult.h.

◆ _corrMatrix

TList RooFitResult::_corrMatrix

mutableprotected

List of global correlation coefficients.

Definition at line 193 of file RooFitResult.h.

◆ _covQual

Int_t RooFitResult::_covQual

protected

Definition at line 184 of file RooFitResult.h.

◆ _edm

Double_t RooFitResult::_edm

protected

Definition at line 187 of file RooFitResult.h.

◆ _finalPars

RooArgList* RooFitResult::_finalPars

protected

Definition at line 190 of file RooFitResult.h.

◆ _GC

TVectorD* RooFitResult::_GC

protected

Definition at line 200 of file RooFitResult.h.

◆ _globalCorr

RooArgList* RooFitResult::_globalCorr

mutableprotected

Definition at line 192 of file RooFitResult.h.

◆ _initPars

RooArgList* RooFitResult::_initPars

protected

Definition at line 189 of file RooFitResult.h.

◆ _Lt

TMatrixF* RooFitResult::_Lt

mutableprotected

List of floating parameters with most recent random perturbation applied.

Definition at line 196 of file RooFitResult.h.

◆ _minNLL

Double_t RooFitResult::_minNLL

protected

Definition at line 186 of file RooFitResult.h.

◆ _numBadNLL

Int_t RooFitResult::_numBadNLL

protected

Definition at line 185 of file RooFitResult.h.

◆ _randomPars

RooArgList* RooFitResult::_randomPars

mutableprotected

Correlation matrix (list of RooArgLists)

Definition at line 195 of file RooFitResult.h.

◆ _status

Int_t RooFitResult::_status

protected

Definition at line 183 of file RooFitResult.h.

◆ _statusHistory

std::vector<std::pair<std::string,int> > RooFitResult::_statusHistory

protected

Definition at line 202 of file RooFitResult.h.

◆ _VM

TMatrixDSym* RooFitResult::_VM

protected

Definition at line 199 of file RooFitResult.h.

Libraries for RooFitResult:

[legend]

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

roofit/roofitcore/inc/RooFitResult.h
roofit/roofitcore/src/RooFitResult.cxx

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Constructor & Destructor Documentation

◆ RooFitResult() [1/2]

◆ RooFitResult() [2/2]

◆ ~RooFitResult()

Member Function Documentation

◆ clone()

◆ Clone()

◆ conditionalCovarianceMatrix()

◆ constPars()

◆ correlation() [1/5]

◆ correlation() [2/5]

◆ correlation() [3/5]

◆ correlation() [4/5]

◆ correlation() [5/5]

◆ correlationHist()

◆ correlationMatrix()

◆ covariance()

◆ covarianceMatrix()

◆ covQual()

◆ createHessePdf()

◆ defaultPrintContents()

◆ defaultPrintStyle()

◆ edm()

◆ fillCorrMatrix() [1/2]

◆ fillCorrMatrix() [2/2]

◆ fillLegacyCorrMatrix()

◆ fillPrefitCorrMatrix()

◆ floatParsFinal()

◆ floatParsInit()

◆ globalCorr() [1/3]

◆ globalCorr() [2/3]

◆ globalCorr() [3/3]

◆ isIdentical()

◆ isIdenticalNoCov()

◆ lastMinuitFit()

◆ minNll()

◆ numInvalidNLL()

◆ numStatusHistory()

◆ plotOn() [1/2]

◆ plotOn() [2/2]

◆ prefitResult()

◆ Print()

◆ printArgs()

◆ printClassName()

◆ printMultiline()

◆ printName()

◆ printTitle()

◆ printValue()

◆ randomizePars()

◆ reducedCovarianceMatrix()

◆ setConstParList()

◆ setCovarianceMatrix()

◆ setCovQual()

◆ setEDM()

◆ setFinalParList()

◆ setInitParList()

◆ setMinNLL()

◆ SetName()

◆ SetNameTitle()

◆ setNumInvalidNLL()

◆ setStatus()

◆ setStatusHistory()

◆ status()

◆ statusCodeHistory()

◆ statusLabelHistory()

Friends And Related Symbol Documentation

◆ RooAbsPdf

◆ RooMinimizer

◆ RooMinuit

Member Data Documentation

◆ _CM

◆ _constPars

◆ _corrMatrix

◆ _covQual