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=nullptr, const char title=nullptr)
	Constructor with name and title.

	RooFitResult (const RooFitResult &other)
	Copy constructor.

	~RooFitResult () override
	Destructor.

virtual TObject *	clone () const

TObject *	Clone (const char *newname=nullptr) const override
	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	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	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.

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

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

double	edm () const
	Return estimated distance to minimum.

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

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

const RooArgList &	floatParsInit () const
	Return list of floating parameters before fit.

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

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

double	globalCorr (const RooAbsArg &par)

TClass *	IsA () const override

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, double tolErr=1e-3, bool verbose=true) const
	Return true if this fit result is identical to other within tolerances, ignoring the correlation matrix.

double	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.

void	Print (Option_t *options=nullptr) const override
	This method must be overridden when a class wants to print itself.

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

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

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

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

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

void	printValue (std::ostream &os) const override
	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	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 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 val)

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

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

void	setNumInvalidNLL (Int_t val)

void	setStatus (Int_t val)

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

Int_t	status () const
	Return MINUIT status code.

Int_t	statusCodeHistory (UInt_t icycle) const

const char *	statusLabelHistory (UInt_t icycle) const

void	Streamer (TBuffer &) override
	Stream an object of class RooFitResult.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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.

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

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

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

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

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

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

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

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

TClass *	IsA () const override

Bool_t	IsSortable () const override

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

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

void	Print (Option_t *option="") const override
	Print TNamed name and title.

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.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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 with: `gROOT->SetSelectedPad(c1)`.

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=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	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.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=nullptr, 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.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from RooDirItem
	RooDirItem ()

	RooDirItem (const RooDirItem &)

virtual	~RooDirItem ()

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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 TNamed
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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 TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

static std::ostream &	defaultPrintStream (std::ostream *os=nullptr)
	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.

Static Public Member Functions inherited from RooDirItem
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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

double	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	fillLegacyCorrMatrix () const
	Sanity check.

void	fillPrefitCorrMatrix ()

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 forceMemoryResident=false)
	Append object to directory.

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

Protected Attributes
TMatrixDSym *	_CM = nullptr
	Correlation matrix.

RooArgList *	_constPars = nullptr
	List of constant parameters.

TList	_corrMatrix
	! Correlation matrix (list of RooArgLists)

Int_t	_covQual
	MINUIT quality code of covariance matrix.

double	_edm
	Estimated distance to minimum.

RooArgList *	_finalPars = nullptr
	List of floating parameters with final values.

TVectorD *	_GC = nullptr
	Global correlation coefficients.

RooArgList *	_globalCorr = nullptr
	! List of global correlation coefficients

RooArgList *	_initPars = nullptr
	List of floating parameters with initial values.

TMatrixF *	_Lt = nullptr
	! triangular matrix used for generate random perturbations

double	_minNLL
	NLL at minimum.

Int_t	_numBadNLL
	Number calls with bad (zero,negative) likelihood.

RooArgList *	_randomPars = nullptr
	! List of floating parameters with most recent random perturbation applied

Int_t	_status
	MINUIT status code.

std::vector< std::pair< std::string, int > >	_statusHistory
	History of status codes.

TMatrixDSym *	_VM = nullptr
	Covariance matrix.

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from RooDirItem
TDirectory *	_dir {nullptr}
	! Associated directory

Friends
class	RooMinuit

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 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 = (1ULL << ( 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 = `nullptr`,
		const char *	title = `nullptr`
	)

Constructor with name and title.

Definition at line 66 of file RooFitResult.cxx.

◆ RooFitResult() [2/2]

RooFitResult::RooFitResult ( const RooFitResult & other )

Copy constructor.

Definition at line 77 of file RooFitResult.cxx.

◆ ~RooFitResult()

RooFitResult::~RooFitResult ( )

override

Destructor.

Definition at line 112 of file RooFitResult.cxx.

Member Function Documentation

◆ Class()

static TClass * RooFitResult::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * RooFitResult::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t RooFitResult::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 204 of file RooFitResult.h.

◆ clone()

virtual TObject * RooFitResult::clone ( ) const

inlinevirtual

Definition at line 51 of file RooFitResult.h.

◆ Clone()

TObject * RooFitResult::Clone ( const char * newname = nullptr ) const

inlineoverridevirtual

Make a clone of an object using the Streamer facility.

If the object derives from TNamed, this function is called by TNamed::Clone. TNamed::Clone uses the optional argument to set a new name to the newly created object.

If the object class has a DirectoryAutoAdd function, it will be called at the end of the function with the parameter gDirectory. This usually means that the object will be appended to the current ROOT directory.

Reimplemented from TObject.

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 1155 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 405 of file RooFitResult.cxx.

◆ correlation() [2/5]

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

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

Definition at line 384 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 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 RooFitResult::correlation	(	Int_t	row,
		Int_t	col
	)		const

protected

Return a correlation matrix element addressed with numeric indices.

Definition at line 462 of file RooFitResult.cxx.

◆ correlationHist()

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

Return TH2D of correlation matrix.

Definition at line 1071 of file RooFitResult.cxx.

◆ correlationMatrix()

const TMatrixDSym & RooFitResult::correlationMatrix ( ) const

Return correlation matrix ;.

Definition at line 1231 of file RooFitResult.cxx.

◆ covariance()

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

protected

Return the covariance matrix element addressed with numeric indices.

Definition at line 471 of file RooFitResult.cxx.

◆ covarianceMatrix()

const TMatrixDSym & RooFitResult::covarianceMatrix ( ) const

Return covariance matrix.

Definition at line 1097 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 1242 of file RooFitResult.cxx.

◆ DeclFileName()

static const char * RooFitResult::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 204 of file RooFitResult.h.

◆ defaultPrintContents()

Int_t RooFitResult::defaultPrintContents ( Option_t * opt ) const

overridevirtual

Configure default contents to be printed.

Reimplemented from RooPrintable.

Definition at line 1416 of file RooFitResult.cxx.

◆ defaultPrintStyle()

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

overridevirtual

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

Reimplemented from RooPrintable.

Definition at line 1425 of file RooFitResult.cxx.

◆ edm()

double 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 684 of file RooFitResult.cxx.

◆ fillCorrMatrix() [2/2]

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

Function called by RooMinimizer.

Definition at line 582 of file RooFitResult.cxx.

◆ fillLegacyCorrMatrix()

void RooFitResult::fillLegacyCorrMatrix ( ) const

protected

Sanity check.

Definition at line 617 of file RooFitResult.cxx.

◆ fillPrefitCorrMatrix()

void RooFitResult::fillPrefitCorrMatrix ( )

protected

Definition at line 740 of file RooFitResult.cxx.

◆ floatParsFinal()

const RooArgList & RooFitResult::floatParsFinal ( ) const

inline

Return list of floating parameters after fit.

Definition at line 111 of file RooFitResult.h.

◆ floatParsInit()

const RooArgList & RooFitResult::floatParsInit ( ) const

inline

Return list of floating parameters before fit.

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 448 of file RooFitResult.cxx.

◆ globalCorr() [2/3]

double RooFitResult::globalCorr ( const char * parname )

Return the global correlation of the named parameter.

Definition at line 424 of file RooFitResult.cxx.

◆ globalCorr() [3/3]

double RooFitResult::globalCorr ( const RooAbsArg & par )

inline

Definition at line 137 of file RooFitResult.h.

◆ IsA()

TClass * RooFitResult::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TObject.

Definition at line 204 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.

As the relative tolerance for the parameter errors, the default value of 1e-3 will be used.

Definition at line 852 of file RooFitResult.cxx.

◆ isIdenticalNoCov()

bool RooFitResult::isIdenticalNoCov	(	const RooFitResult &	other,
		double	tol = `1e-6`,
		double	tolErr = `1e-3`,
		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]	tolErr	Relative tolerance for parameter errors.
[in]	verbose	If this function will log to the standard output when comparisions fail.

Definition at line 790 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 906 of file RooFitResult.cxx.

◆ minNll()

double 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

plot

winID h TVirtualViewer3D TVirtualGLPainter char TVirtualGLPainter plot

Definition TGWin32VirtualGLProxy.cxx:53

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 233 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 996 of file RooFitResult.cxx.

◆ Print()

void RooFitResult::Print ( Option_t * option = nullptr ) const

inlineoverridevirtual

This method must be overridden when a class wants to print itself.

Reimplemented from TObject.

Definition at line 66 of file RooFitResult.h.

◆ printArgs()

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

overridevirtual

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

Reimplemented from RooPrintable.

Definition at line 1397 of file RooFitResult.cxx.

◆ printClassName()

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

overridevirtual

Print class name of fit result.

Reimplemented from RooPrintable.

Definition at line 1388 of file RooFitResult.cxx.

◆ printMultiline()

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

overridevirtual

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 483 of file RooFitResult.cxx.

◆ printName()

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

overridevirtual

Print name of fit result.

Reimplemented from RooPrintable.

Definition at line 1370 of file RooFitResult.cxx.

◆ printTitle()

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

overridevirtual

Print title of fit result.

Reimplemented from RooPrintable.

Definition at line 1379 of file RooFitResult.cxx.

◆ printValue()

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

overridevirtual

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 1407 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 331 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 1109 of file RooFitResult.cxx.

◆ setConstParList()

void RooFitResult::setConstParList ( const RooArgList & list )

Fill the list of constant parameters.

Definition at line 134 of file RooFitResult.cxx.

◆ setCovarianceMatrix()

void RooFitResult::setCovarianceMatrix ( TMatrixDSym & V )

Store externally provided correlation matrix in this RooFitResult ;.

Definition at line 1037 of file RooFitResult.cxx.

◆ setCovQual()

void RooFitResult::setCovQual ( Int_t val )

inline

Definition at line 169 of file RooFitResult.h.

◆ setEDM()

void RooFitResult::setEDM ( double val )

inline

Definition at line 167 of file RooFitResult.h.

◆ setFinalParList()

void RooFitResult::setFinalParList ( const RooArgList & list )

Fill the list of final values of the floating parameters.

Definition at line 166 of file RooFitResult.cxx.

◆ setInitParList()

void RooFitResult::setInitParList ( const RooArgList & list )

Fill the list of initial values of the floating parameters.

Definition at line 150 of file RooFitResult.cxx.

◆ setMinNLL()

void RooFitResult::setMinNLL ( double val )

inline

Definition at line 166 of file RooFitResult.h.

◆ SetName()

void RooFitResult::SetName ( const char * name )

overridevirtual

Change name of RooFitResult object.

Reimplemented from TNamed.

Definition at line 1348 of file RooFitResult.cxx.

◆ SetNameTitle()

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

overridevirtual

Change name and title of RooFitResult object.

Reimplemented from TNamed.

Definition at line 1359 of file RooFitResult.cxx.

◆ setNumInvalidNLL()

void RooFitResult::setNumInvalidNLL ( Int_t val )

inline

Definition at line 170 of file RooFitResult.h.

◆ setStatus()

void RooFitResult::setStatus ( Int_t val )

inline

Definition at line 168 of file RooFitResult.h.

◆ setStatusHistory()

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

inline

Definition at line 171 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 182 of file RooFitResult.cxx.

◆ statusLabelHistory()

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

Definition at line 196 of file RooFitResult.cxx.

◆ Streamer()

void RooFitResult::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class RooFitResult.

Reimplemented from TObject.

Definition at line 1437 of file RooFitResult.cxx.

◆ StreamerNVirtual()

void RooFitResult::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 204 of file RooFitResult.h.

Friends And Related Symbol Documentation

◆ RooMinuit

friend class RooMinuit

friend

Definition at line 176 of file RooFitResult.h.

Member Data Documentation

◆ _CM

TMatrixDSym* RooFitResult::_CM = nullptr

protected

Correlation matrix.

Definition at line 198 of file RooFitResult.h.

◆ _constPars

RooArgList* RooFitResult::_constPars = nullptr

protected

List of constant parameters.

Definition at line 188 of file RooFitResult.h.

◆ _corrMatrix

TList RooFitResult::_corrMatrix

mutableprotected

! Correlation matrix (list of RooArgLists)

Definition at line 193 of file RooFitResult.h.

◆ _covQual

Int_t RooFitResult::_covQual

protected

MINUIT quality code of covariance matrix.

Definition at line 184 of file RooFitResult.h.

◆ _edm

double RooFitResult::_edm

protected

Estimated distance to minimum.

Definition at line 187 of file RooFitResult.h.

◆ _finalPars

RooArgList* RooFitResult::_finalPars = nullptr

protected

List of floating parameters with final values.

Definition at line 190 of file RooFitResult.h.

◆ _GC

TVectorD* RooFitResult::_GC = nullptr

protected

Global correlation coefficients.

Definition at line 200 of file RooFitResult.h.

◆ _globalCorr

RooArgList* RooFitResult::_globalCorr = nullptr

mutableprotected

! List of global correlation coefficients

Definition at line 192 of file RooFitResult.h.

◆ _initPars

RooArgList* RooFitResult::_initPars = nullptr

protected

List of floating parameters with initial values.

Definition at line 189 of file RooFitResult.h.

◆ _Lt

TMatrixF* RooFitResult::_Lt = nullptr

mutableprotected

! triangular matrix used for generate random perturbations

Definition at line 196 of file RooFitResult.h.

◆ _minNLL

double RooFitResult::_minNLL

protected

NLL at minimum.

Definition at line 186 of file RooFitResult.h.

◆ _numBadNLL

Int_t RooFitResult::_numBadNLL

protected

Number calls with bad (zero,negative) likelihood.

Definition at line 185 of file RooFitResult.h.

◆ _randomPars

RooArgList* RooFitResult::_randomPars = nullptr

mutableprotected

! List of floating parameters with most recent random perturbation applied

Definition at line 195 of file RooFitResult.h.

◆ _status

Int_t RooFitResult::_status

protected

MINUIT status code.

Definition at line 183 of file RooFitResult.h.

◆ _statusHistory

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

protected

History of status codes.

Definition at line 202 of file RooFitResult.h.

◆ _VM

TMatrixDSym* RooFitResult::_VM = nullptr

protected

Covariance matrix.

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

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ 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()

◆ DeclFileName()

◆ defaultPrintContents()

◆ defaultPrintStyle()

◆ edm()

◆ fillCorrMatrix() [1/2]

◆ fillCorrMatrix() [2/2]

◆ fillLegacyCorrMatrix()

◆ fillPrefitCorrMatrix()

◆ floatParsFinal()

◆ floatParsInit()

◆ globalCorr() [1/3]

◆ globalCorr() [2/3]

◆ globalCorr() [3/3]

◆ IsA()

◆ 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()

◆ Streamer()

◆ StreamerNVirtual()

Friends And Related Symbol Documentation

◆ RooMinuit