TTreeFormula Class Reference

Used to pass a selection expression to the Tree drawing routine.

See TTree::Draw

A TreeFormula can contain any arithmetic expression including standard operators and mathematical functions separated by operators. Examples of valid expression:

"x<y && sqrt(z)>3.2"

TTreeFormula now relies on a variety of TFormLeafInfo classes to handle the reading of the information. Here is the list of theses classes:

• TFormLeafInfo
• TFormLeafInfoDirect
• TFormLeafInfoNumerical
• TFormLeafInfoClones
• TFormLeafInfoCollection
• TFormLeafInfoPointer
• TFormLeafInfoMethod
• TFormLeafInfoMultiVarDim
• TFormLeafInfoMultiVarDimDirect
• TFormLeafInfoCast

The following method are available from the TFormLeafInfo interface:

• AddOffset(Int_t offset, TStreamerElement* element)
• GetCounterValue(TLeaf* leaf) : return the size of the array pointed to.
• GetObjectAddress(TLeafElement* leaf) : Returns the location of the object pointed to.
• GetMultiplicity() : Returns info on the variability of the number of elements
• GetNdata(TLeaf* leaf) : Returns the number of elements
• GetNdata() : Used by GetNdata(TLeaf* leaf)
• GetValue(TLeaf *leaf, Int_t instance = 0) : Return the value
• GetValuePointer(TLeaf *leaf, Int_t instance = 0) : Returns the address of the value
• GetLocalValuePointer(TLeaf *leaf, Int_t instance = 0) : Returns the address of the value of 'this' LeafInfo
• IsString()
• ReadValue(char *where, Int_t instance = 0) : Internal function to interpret the location 'where'
• Update() : react to the possible loading of a shared library.

Definition at line 58 of file TTreeFormula.h.

Classes
struct	RealInstanceCache

Public Types
enum	{ kSingleKey = (1ULL << (0)) , kOverwrite = (1ULL << (1)) , kWriteDelete = (1ULL << (2)) }
enum	{   kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,   kBitMask = 0x00ffffff }
enum	{ kNotGlobal = (1ULL << (10)) , kNormalized = (1ULL << (14)) , kLinear = (1ULL << (16)) }
enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << (3)) }

Public Member Functions
	TTreeFormula ()=delete
	TTreeFormula (const char *name, const char *formula, TTree *tree)
	Normal TTree Formula Constructor.
	TTreeFormula (TRootIOCtor *)
	TreeFormula constructor only valid for ROOT I/O purposes.
	~TTreeFormula () override
	Tree Formula default destructor.
void	AbstractMethod (const char *method) const
	Call this function within a function that you don't want to define as purely virtual, in order not to force all users deriving from that class to implement that maybe (on their side) unused function; but at the same time, emit a run-time warning if they try to call it, telling that it is not implemented in the derived class: action must thus be taken on the user side to override it.
virtual void	Analyze (const char *schain, Int_t &err, Int_t offset=0)
	Analyze a sub-expression in one formula.
virtual Bool_t	AnalyzeFunction (TString &chaine, Int_t &err, Int_t offset=0)
	Check if the chain as function call.
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.
void	Clear (Option_t *option="") override
	Resets the objects.
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.
virtual Int_t	Compile (const char *expression="")
	Compile expression already stored in fTitle.
void	Copy (TObject &formula) const override
	Copy this formula.
virtual char *	DefinedString (Int_t code)
	Return address of string corresponding to special code.
virtual Double_t	DefinedValue (Int_t code)
	Return value corresponding to special code.
Int_t	DefinedVariable (TString &variable, Int_t &action) override
	Check if name is in the list of Tree/Branch leaves.
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 Double_t	Eval (Double_t x, Double_t y=0, Double_t z=0, Double_t t=0) const
	Evaluate this formula.
virtual TClass *	EvalClass () const
	Evaluate the class of this treeformula.
virtual Double_t	EvalInstance (Int_t i=0, const char *stringStack[]=nullptr)
	Double_t template specialization of EvalInstance.
template<typename T>
T	EvalInstance (Int_t i=0, const char *stringStack[]=nullptr)
	Evaluate this treeformula.
virtual Long64_t	EvalInstance64 (Int_t i=0, const char *stringStack[]=nullptr)
	Long64_t template specialization of EvalInstance.
virtual LongDouble_t	EvalInstanceLD (Int_t i=0, const char *stringStack[]=nullptr)
	LongDouble_t template specialization of EvalInstance.
virtual void *	EvalObject (Int_t i=0)
	Evaluate this treeformula.
virtual Double_t	EvalPar (const Double_t *x, const Double_t *params=nullptr)
virtual Double_t	EvalParOld (const Double_t *x, const Double_t *params=nullptr)
	Evaluate this formula.
virtual const char *	EvalStringInstance (Int_t i=0)
	Eval the instance as a string.
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 void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.
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.
template<>
Long64_t	GetConstant (Int_t k)
template<>
LongDouble_t	GetConstant (Int_t k)
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.
virtual TString	GetExpFormula (Option_t *option="") const
	Reconstruct the formula expression from the internal TFormula member variables.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual TLeaf *	GetLeaf (Int_t n) const
	Return leaf corresponding to serial number n.
TFormLeafInfo *	GetLeafInfo (Int_t code) const
	Return DataMember corresponding to code.
virtual const TObject *	GetLinearPart (Int_t i)
	Return linear part.
TTreeFormulaManager *	GetManager () const
TMethodCall *	GetMethodCall (Int_t code) const
	Return methodcall corresponding to code.
virtual Int_t	GetMultiplicity () const
const char *	GetName () const override
	Returns name of object.
virtual Int_t	GetNcodes () const
virtual Int_t	GetNdata ()
	Return number of available instances in the formula.
virtual Int_t	GetNdim () const
virtual Int_t	GetNpar () const
virtual Int_t	GetNumber () const
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
Double_t	GetParameter (const char *name) const
	Return value of parameter named parName.
Double_t	GetParameter (Int_t ipar) const
	Return value of parameter number ipar.
virtual Double_t *	GetParameters () const
virtual void	GetParameters (Double_t *params)
virtual const char *	GetParName (Int_t ipar) const
	Return name of one parameter.
virtual Int_t	GetParNumber (const char *name) const
	Return parameter number by name.
const char *	GetTitle () const override
	Returns title of object.
virtual TTree *	GetTree () 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.
ULong_t	Hash () const override
	Return hash value for this object.
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)
TClass *	IsA () const override
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).
virtual bool	IsInteger (bool fast=true) const
	Return TRUE if the formula corresponds to one single Tree leaf and this leaf is short, int or unsigned short, int When a leaf is of type integer or string, the generated histogram is forced to have an integer bin width.
virtual Bool_t	IsLinear () const
virtual Bool_t	IsNormalized () const
Bool_t	IsOnHeap () const
bool	IsQuickLoad () const
Bool_t	IsSortable () const override
virtual bool	IsString () const
	Return TRUE if the formula is a string.
Bool_t	IsZombie () const
void	ls (Option_t *option="") const override
	List TNamed name and title.
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).
bool	Notify () override
	This method must be overridden to handle object notification (the base implementation is no-op).
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.
void	operator delete (void *, size_t)
	Operator delete for sized deallocation.
void	operator delete (void *ptr)
	Operator delete.
void	operator delete (void *ptr, void *vp)
	Only called by placement new when throwing an exception.
void	operator delete[] (void *, size_t)
	Operator delete [] for sized deallocation.
void	operator delete[] (void *ptr)
	Operator delete [].
void	operator delete[] (void *ptr, void *vp)
	Only called by placement new[] when throwing an exception.
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)
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.
void	Print (Option_t *option="") const override
	Dump this formula with its attributes.
virtual char *	PrintValue (Int_t mode, Int_t instance, const char *decform="9.9") const
	Return value of variable as a string.
virtual char *	PrintValue (Int_t mode=0) const
	Return value of variable as a string.
virtual void	ProcessLinear (TString &replaceformula)
	If the formula is for linear fitting, change the title to normal and fill the LinearParts array.
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	ResetLoading ()
	Tell the formula that we are going to request a new entry.
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".
virtual void	SetAxis (TAxis *axis=nullptr)
	Set the axis (in particular get the type).
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	SetName (const char *name)
	Set the name of the TNamed.
virtual void	SetNameTitle (const char *name, const char *title)
	Set all the TNamed parameters (name and title).
virtual void	SetNumber (Int_t number)
virtual void	SetParameter (const char *name, Double_t parvalue)
	Initialize parameter number ipar.
virtual void	SetParameter (Int_t ipar, Double_t parvalue)
	Initialize parameter number ipar.
virtual void	SetParameters (const Double_t *params)
	Initialize array of all parameters.
virtual void	SetParameters (Double_t p0, Double_t p1, Double_t p2=0, Double_t p3=0, Double_t p4=0, Double_t p5=0, Double_t p6=0, Double_t p7=0, Double_t p8=0, Double_t p9=0, Double_t p10=0)
	Initialize up to 11 parameters All arguments except THE FIRST TWO are optional In case of a function with only one parameter, call this function with p1=0.
virtual void	SetParName (Int_t ipar, const char *name)
	Set name of parameter number ipar.
virtual void	SetParNames (const char *name0="p0", const char *name1="p1", const char *name2="p2", const char *name3="p3", const char *name4="p4", const char *name5="p5", const char *name6="p6", const char *name7="p7", const char *name8="p8", const char *name9="p9", const char *name10="p10")
	Set up to 11 parameter names.
void	SetQuickLoad (bool quick)
virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.
virtual void	SetTree (TTree *tree)
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.
virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.
void	Streamer (TBuffer &b, const TClass *onfile_class)
	Stream a class object.
void	Streamer (TBuffer &b, Int_t version, UInt_t start, UInt_t count, const TClass *onfile_class=nullptr)
	specialized streamer function being able to read old TF1 versions as TF1Old in memory
void	Streamer (TBuffer &) override
	Stream an object of class TTreeFormula.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
virtual void	SysError (const char *method, const char *msgfmt,...) const
	Issue system error message.
Bool_t	TestBit (UInt_t f) const
Int_t	TestBits (UInt_t f) const
virtual void	Update ()
virtual void	UpdateFormulaLeaves ()
	This function is called TTreePlayer::UpdateFormulaLeaves, itself called by TChain::LoadTree when a new Tree is loaded.
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.

Static Public Member Functions
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 void	GetMaxima (Int_t &maxop, Int_t &maxpar, Int_t &maxconst)
	static function to get the maximum value of 3 parameters -maxop : maximum number of operations -maxpar : maximum number of parameters -maxconst : maximum number of constants
static Bool_t	GetObjectStat ()
	Get status of object stat flag.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetMaxima (Int_t maxop=1000, Int_t maxpar=1000, Int_t maxconst=1000)
	static function to set the maximum value of 3 parameters
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Types
enum	{   kEnd = 0 , kAdd = 1 , kSubstract = 2 , kMultiply = 3 ,   kDivide = 4 , kModulo = 5 , kcos = 10 , ksin = 11 ,   ktan = 12 , kacos = 13 , kasin = 14 , katan = 15 ,   katan2 = 16 , kfmod = 17 , kpow = 20 , ksq = 21 ,   ksqrt = 22 , kstrstr = 23 , kmin = 24 , kmax = 25 ,   klog = 30 , kexp = 31 , klog10 = 32 , kpi = 40 ,   kabs = 41 , ksign = 42 , kint = 43 , kSignInv = 44 ,   krndm = 50 , kAnd = 60 , kOr = 61 , kEqual = 62 ,   kNotEqual = 63 , kLess = 64 , kGreater = 65 , kLessThan = 66 ,   kGreaterThan = 67 , kNot = 68 , kcosh = 70 , ksinh = 71 ,   ktanh = 72 , kacosh = 73 , kasinh = 74 , katanh = 75 ,   kStringEqual = 76 , kStringNotEqual = 77 , kBitAnd = 78 , kBitOr = 79 ,   kLeftShift = 80 , kRightShift = 81 , kJumpIf = 82 , kJump = 83 ,   kexpo = 100 , kxexpo = 100 , kyexpo = 101 , kzexpo = 102 ,   kxyexpo = 105 , kgaus = 110 , kxgaus = 110 , kygaus = 111 ,   kzgaus = 112 , kxygaus = 115 , klandau = 120 , kxlandau = 120 ,   kylandau = 121 , kzlandau = 122 , kxylandau = 125 , kpol = 130 ,   kxpol = 130 , kypol = 131 , kzpol = 132 , kParameter = 140 ,   kConstant = 141 , kBoolOptimize = 142 , kStringConst = 143 , kVariable = 144 ,   kFunctionCall = 145 , kData = 146 , kUnary = 147 , kBinary = 148 ,   kThree = 149 , kDefinedVariable = 150 , kDefinedString = 151 , kPlusD = 152 ,   kPlusDD = 153 , kMultD = 154 , kMultDD = 155 , kBoolOptimizeOr = 156 ,   kBoolOptimizeAnd = 157 , kBoolSet = 158 , kFDM = 159 , kFD0 = 160 ,   kFD1 = 161 , kFD2 = 162 , kFD3 = 163 }
enum	{   kDirect , kDataMember , kMethod , kIndexOfEntry ,   kEntries , kLength , kIteration , kLengthFunc ,   kSum , kEntryList , kTreeMember , kIndexOfLocalEntry ,   kMin , kMax , kLocalEntries }
enum	{ kOnlyPrepStep = (1ULL << (3)) }
enum	{   kAlias = 200 , kAliasString = 201 , kAlternate = 202 , kAlternateString = 203 ,   kMinIf = 204 , kMaxIf = 205 }
enum	EStatusBits { kIsCharacter = (1ULL << (12)) , kMissingLeaf = (1ULL << (15)) , kIsInteger = (1ULL << (17)) , kNeedEntries = (1ULL << (18)) }
typedef Double_t(TObject::*	TFuncG) (const Double_t *, const Double_t *) const

Protected Member Functions
	TTreeFormula (const char *name, const char *formula, TTree *tree, const std::vector< std::string > &aliases)
	Constructor used during the expansion of an alias.
Bool_t	AnalyzePrimitive (TString &chain, TObjArray &args, Int_t &err, Int_t offset) override
	Check if the given string matches a defined function primitive.
bool	BranchHasMethod (TLeaf *leaf, TBranch *branch, const char *method, const char *params, Long64_t readentry) const
	Return the leaf (if any) of the tree with contains an object of a class having a method which has the name provided in the argument.
virtual Bool_t	CheckOperands (Int_t leftoperand, Int_t rightoperartion, Int_t &err)
	Check whether the operands at 'leftoper' and 'oper-1' are compatible with the operation at 'oper'.
virtual Bool_t	CheckOperands (Int_t operation, Int_t &err)
	Check whether the operand at 'oper-1' is compatible with the operation at 'oper'.
void	ClearFormula (Option_t *option="")
	Resets the objects.
void	Convert (UInt_t fromVersion) override
Int_t	DefineAlternate (const char *expression)
	This method check for treat the case where expression contains Alt$( and load up both fAliases and fExpr.
void	DefineDimensions (Int_t code, Int_t size, TFormLeafInfoMultiVarDim *info, Int_t &virt_dim)
	This method is used internally to decode the dimensions of the variables.
virtual void	DoError (int level, const char *location, const char *fmt, va_list va) const
	Interface to ErrorHandler (protected).
virtual TClass *	EvalClass (Int_t oper) const
	Evaluate the class of the operation oper.
Double_t	EvalParFast (const Double_t *x, const Double_t *params)
	Evaluate this formula.
Double_t	EvalPrimitive (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Double_t	EvalPrimitive0 (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Double_t	EvalPrimitive1 (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Double_t	EvalPrimitive2 (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Double_t	EvalPrimitive3 (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Double_t	EvalPrimitive4 (const Double_t *x, const Double_t *params)
	Evaluate primitive formula.
Int_t	FindLeafForExpression (const char *expression, TLeaf *&leaf, TString &leftover, bool &final, UInt_t &paran_level, TObjArray &castqueue, std::vector< std::string > &aliasUsed, bool &useLeafCollectionObject, const char *fullExpression)
	Look for the leaf corresponding to the start of expression.
Short_t	GetAction (Int_t code) const
Short_t	GetActionOptimized (Int_t code) const
Int_t	GetActionParam (Int_t code) const
Int_t	GetActionParamOptimized (Int_t code) const
TLeaf *	GetLeafWithDatamember (const char *topchoice, const char *nextchice, Long64_t readentry) const
	Return the leaf (if any) which contains an object containing a data member which has the name provided in the arguments.
Int_t *	GetOper () const
Int_t *	GetOperOptimized () const
Int_t	GetRealInstance (Int_t instance, Int_t codeindex)
	Now let calculate what physical instance we really need.
virtual Double_t	GetValueFromMethod (Int_t i, TLeaf *leaf) const
	Return result of a leafobject method.
virtual void *	GetValuePointerFromMethod (Int_t i, TLeaf *leaf) const
	Return result of a leafobject method.
void	Init (const char *name, const char *formula)
	Initialization called from the constructors.
virtual bool	IsLeafInteger (Int_t code) const
	Return TRUE if the leaf corresponding to code is short, int or unsigned short, int When a leaf is of type integer, the generated histogram is forced to have an integer bin width.
virtual bool	IsLeafString (Int_t code) const
	Return TRUE if the leaf or data member corresponding to code is a string.
bool	IsString (Int_t oper) const override
	Return true if the expression at the index 'oper' is to be treated as as string.
void	LoadBranches ()
	Make sure that all the branches have been loaded properly.
bool	LoadCurrentDim ()
	Calculate the actual dimension for the current entry.
void	MakePrimitive (const char *expr, Int_t pos)
	MakePrimitive find TFormulaPrimitive replacement for some operands.
void	MakeZombie ()
void	Optimize () override
	MI include.
Int_t	ParseWithLeaf (TLeaf *leaf, const char *expression, bool final, UInt_t paran_level, TObjArray &castqueue, bool useLeafCollectionObject, const char *fullExpression)
	Decompose 'expression' as pointing to something inside the leaf Returns:
Int_t	PreCompile ()
	Pre compile function.
Int_t	RegisterDimensions (const char *size, Int_t code)
	This method is used internally to decode the dimensions of the variables.
Int_t	RegisterDimensions (Int_t code, Int_t size, TFormLeafInfoMultiVarDim *multidim=nullptr)
	This method stores the dimension information for later usage.
Int_t	RegisterDimensions (Int_t code, TBranchElement *branch)
	This method is used internally to decode the dimensions of the variables.
Int_t	RegisterDimensions (Int_t code, TFormLeafInfo *info, TFormLeafInfo *maininfo, bool useCollectionObject)
	This method is used internally to decode the dimensions of the variables.
Int_t	RegisterDimensions (Int_t code, TLeaf *leaf)
	This method is used internally to decode the dimensions of the variables.
void	ResetDimensions ()
	Populate the TTreeFormulaManager with the dimension information.
void	SavePrimitiveNameTitle (std::ostream &out, const char *variable_name)
	Save object name and title into the output stream "out".
void	SetAction (Int_t code, Int_t value, Int_t param=0)
void	SetActionOptimized (Int_t code, Int_t value, Int_t param=0)
bool	StringToNumber (Int_t code) override
	Try to 'demote' a string into an array bytes.
virtual bool	SwitchToFormLeafInfo (Int_t code)
	Convert the underlying lookup method from the direct technique (dereferencing the address held by the branch) to the method using TFormLeafInfo.

Static Protected Member Functions
static void	SavePrimitiveConstructor (std::ostream &out, TClass *cl, const char *variable_name, const char *constructor_agrs="", Bool_t empty_line=kTRUE)
	Save object constructor in the output stream "out".
static void	SavePrimitiveDraw (std::ostream &out, const char *variable_name, Option_t *option=nullptr)
	Save invocation of primitive Draw() method Skipped if option contains "nodraw" string.
static TString	SavePrimitiveVector (std::ostream &out, const char *prefix, Int_t len, Double_t *arr, Int_t flag=0)
	Save array in the output stream "out" as vector.

Protected Attributes
TObjArray	fAliases
	! List of TTreeFormula for each alias used.
std::vector< std::string >	fAliasesUsed
	! List of aliases used during the parsing of the expression.
TBits	fAlreadyFound
	! cache for information
TAxis *	fAxis
	! pointer to histogram axis if this is a string
TObjArray	fBranches
	! List of branches to read. Similar to fLeaves but duplicates are zeroed out.
Int_t	fCodes [kMAXCODES]
	List of leaf numbers referenced in formula.
Double_t *	fConst
LongDouble_t *	fConstLD
	! local version of fConsts able to store bigger numbers
Int_t	fCumulSizes [kMAXCODES][kMAXFORMDIM]
	Accumulated sizes of lower dimensions for each leaf after variable dimensions has been calculated.
TObjArray	fDataMembers
	! List of leaf data members
bool	fDidBooleanOptimization
	! True if we executed one boolean optimization since the last time instance number 0 was evaluated
TList *	fDimensionSetup
	! list of dimension setups, for delayed creation of the dimension information.
TString *	fExpr
TString *	fExprOptimized
	![fNOperOptimized] List of expressions
TObjArray	fExternalCuts
	! List of TCutG and TEntryList used in the formula
Int_t	fFixedSizes [kMAXCODES][kMAXFORMDIM]
	Physical sizes of lower dimensions for each leaf.
TObjArray	fFunctions
bool	fHasCast
	Record whether the formula contain a cast operation or not.
UChar_t	fHasMultipleVarDim [kMAXCODES]
	True if the corresponding variable is an array with more than one variable dimension.
Int_t	fIndexes [kMAXCODES][kMAXFORMDIM]
	Index of array selected by user for each leaf.
TObjArray	fLeafNames
	List of TNamed describing leaves.
TObjArray	fLeaves
	! List of leaf used in this formula.
TObjArray	fLinearParts
Int_t *	fLookupType
	[fNindex] Array indicating how each leaf should be looked-up
TTreeFormulaManager *	fManager
	! The dimension coordinator.
TObjArray	fMethods
	! List of leaf method calls
Int_t	fMultiplicity
	Indicator of the variability of the formula.
TString	fName
TString *	fNames
Int_t	fNcodes
	Number of leaves referenced in formula.
Int_t	fNconst
Int_t	fNdata [kMAXCODES]
	! This caches the physical number of element in the leaf or data member.
Int_t	fNdim
Int_t	fNdimensions [kMAXCODES]
	Number of array dimensions in each leaf.
bool	fNeedLoading
	! If true, the current entry has not been loaded yet.
Int_t	fNindex
	Size of fIndex.
Int_t	fNoper
Int_t	fNOperOptimized
	!Number of operators after optimization
Int_t	fNpar
Int_t	fNstring
Int_t	fNumber
Int_t	fNval
TOperOffset *	fOperOffset
	![fNOperOptimized] Offsets of operrands
Int_t *	fOperOptimized
	![fNOperOptimized] List of operators. (See documentation for changes made at version 7)
TFuncG	fOptimal
	!pointer to optimal function
Double_t *	fParams
TFormulaPrimitive **	fPredefined
	![fNPar] predefined function
bool	fQuickLoad
	! If true, branch GetEntry is only called when the entry number changes.
RealInstanceCache	fRealInstanceCache
	! Cache accelerating the GetRealInstance function
TString	fTitle
TTree *	fTree
	! Pointer to Tree
TTreeFormula *	fVarIndexes [kMAXCODES][kMAXFORMDIM]
	Pointer to a variable index.

Private Member Functions
	TTreeFormula (const TTreeFormula &)=delete
template<typename T>
T	GetConstant (Int_t k)
TTreeFormula &	operator= (const TTreeFormula &)=delete

Static Private Member Functions
static void	AddToTObjectTable (TObject *)
	Private helper function which will dispatch to TObjectTable::AddObj.

Private Attributes
UInt_t	fBits
	bit field status word
Int_t *	fOper
UInt_t	fUniqueID
	object unique identifier

Static Private Attributes
static Longptr_t	fgDtorOnly = 0
	object for which to call dtor only (i.e. no delete)
static Bool_t	fgObjectStat = kTRUE
	if true keep track of objects in TObjectTable

Friends
class	TTreeFormulaManager

#include <TTreeFormula.h>

Inheritance diagram for TTreeFormula:

Member Typedef Documentation

TFuncG

typedef Double_t(TObject::* ROOT::v5::TFormula::TFuncG) (const Double_t *, const Double_t *) const

protectedinherited

Definition at line 69 of file TFormula.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

protectedinherited

Enumerator
kEnd
kAdd
kSubstract
kMultiply
kDivide
kModulo
kcos
ksin
ktan
kacos
kasin
katan
katan2
kfmod
kpow
ksq
ksqrt
kstrstr
kmin
kmax
klog
kexp
klog10
kpi
kabs
ksign
kint
kSignInv
krndm
kAnd
kOr
kEqual
kNotEqual
kLess
kGreater
kLessThan
kGreaterThan
kNot
kcosh
ksinh
ktanh
kacosh
kasinh
katanh
kStringEqual
kStringNotEqual
kBitAnd
kBitOr
kLeftShift
kRightShift
kJumpIf
kJump
kexpo
kxexpo
kyexpo
kzexpo
kxyexpo
kgaus
kxgaus
kygaus
kzgaus
kxygaus
klandau
kxlandau
kylandau
kzlandau
kxylandau
kpol
kxpol
kypol
kzpol
kParameter
kConstant
kBoolOptimize
kStringConst
kVariable
kFunctionCall
kData
kUnary
kBinary
kThree
kDefinedVariable
kDefinedString
kPlusD
kPlusDD
kMultD
kMultDD
kBoolOptimizeOr
kBoolOptimizeAnd
kBoolSet
kFDM
kFD0
kFD1
kFD2
kFD3

Definition at line 136 of file TFormula.h.

anonymous enum

anonymous enum

protected

Enumerator
kDirect
kDataMember
kMethod
kIndexOfEntry
kEntries
kLength
kIteration
kLengthFunc
kSum
kEntryList
kTreeMember
kIndexOfLocalEntry
kMin
kMax
kLocalEntries

Definition at line 69 of file TTreeFormula.h.

anonymous enum

anonymous enum

protectedinherited

Enumerator

kOnlyPrepStep

Used to request that the class specific implementation of TObject::Write just prepare the objects to be ready to be written but do not actually write them into the TBuffer. This is just for example by TBufferMerger to request that the TTree inside the file calls TTree::FlushBaskets (outside of the merging lock) and TBufferMerger will later ask for the write (inside the merging lock). To take advantage of this feature the class needs to overload TObject::Write and use this enum value accordingly. (See TTree::Write and TObject::Write) Do not use, this feature will be migrate to the Merge function (See TClass and TTree::Merge)

Definition at line 106 of file TObject.h.

anonymous enum

anonymous enum

inherited

Enumerator
kSingleKey	write collection with single key
kOverwrite	overwrite existing object with same name
kWriteDelete	write object, then delete previous key with same name

Definition at line 99 of file TObject.h.

anonymous enum

anonymous enum

inherited

Enumerator
kIsOnHeap	object is on heap
kNotDeleted	object has not been deleted
kZombie	object ctor failed
kInconsistent	class overload Hash but does call RecursiveRemove in destructor
kBitMask

Definition at line 89 of file TObject.h.

anonymous enum

anonymous enum

protected

Enumerator
kAlias
kAliasString
kAlternate
kAlternateString
kMinIf
kMaxIf

Definition at line 78 of file TTreeFormula.h.

anonymous enum

anonymous enum

inherited

Enumerator
kNotGlobal
kNormalized
kLinear

Definition at line 212 of file TFormula.h.

EDeprecatedStatusBits

enum TObject::EDeprecatedStatusBits

inherited

Enumerator
kObjInCanvas	for backward compatibility only, use kMustCleanup

Definition at line 84 of file TObject.h.

EStatusBits

enum TTreeFormula::EStatusBits

protected

Enumerator
kIsCharacter
kMissingLeaf
kIsInteger
kNeedEntries

Definition at line 63 of file TTreeFormula.h.

Constructor & Destructor Documentation

TTreeFormula() [1/5]

TTreeFormula::TTreeFormula ( const char * name, const char * formula, TTree * tree, const std::vector< std::string > & aliases )

protected

Constructor used during the expansion of an alias.

Definition at line 184 of file TTreeFormula.cxx.

TTreeFormula() [2/5]

TTreeFormula::TTreeFormula ( const TTreeFormula & )

privatedelete

TTreeFormula() [3/5]

TTreeFormula::TTreeFormula ( )

delete

TTreeFormula() [4/5]

TTreeFormula::TTreeFormula

(

TRootIOCtor *

)

TreeFormula constructor only valid for ROOT I/O purposes.

Definition at line 143 of file TTreeFormula.cxx.

TTreeFormula() [5/5]

TTreeFormula::TTreeFormula	(	const char *	name,
		const char *	formula,
		TTree *	tree )

Normal TTree Formula Constructor.

Definition at line 174 of file TTreeFormula.cxx.

~TTreeFormula()

TTreeFormula::~TTreeFormula ( )

override

Tree Formula default destructor.

Definition at line 341 of file TTreeFormula.cxx.

Member Function Documentation

AbstractMethod()

void TObject::AbstractMethod ( const char * method ) const

inherited

Call this function within a function that you don't want to define as purely virtual, in order not to force all users deriving from that class to implement that maybe (on their side) unused function; but at the same time, emit a run-time warning if they try to call it, telling that it is not implemented in the derived class: action must thus be taken on the user side to override it.

In other word, this method acts as a "runtime purely virtual" warning instead of a "compiler purely virtual" error.

Warning

This interface is a legacy function that is no longer recommended to be used by new development code.

Note

The name "AbstractMethod" does not imply that it's an abstract method in the strict C++ sense.

Definition at line 1149 of file TObject.cxx.

AddToTObjectTable()

void TObject::AddToTObjectTable ( TObject * op )

staticprivateinherited

Private helper function which will dispatch to TObjectTable::AddObj.

Included here to avoid circular dependency between header files.

Definition at line 195 of file TObject.cxx.

Analyze()

void TFormula::Analyze ( const char * schain, Int_t & err, Int_t offset = 0 )

virtualinherited

Analyze a sub-expression in one formula.

Expressions in one formula are recursively analyzed. Result of analysis is stored in the object tables.

Table of function codes and errors

* functions :
 
  +           1                   pow          20
  -           2                   sq           21
  *           3                   sqrt         22
  /           4                   strstr       23
  %           5                   min          24
                                  max          25
                                  log          30
  cos         10                  exp          31
  sin         11                  log10        32
  tan         12
  acos        13                  abs          41
  asin        14                  sign         42
  atan        15                  int          43
  atan2       16
  fmod        17                  rndm         50
 
  cosh        70                  acosh        73
  sinh        71                  asinh        74
  tanh        72                  atanh        75
 
  expo       100                  gaus        110     gausn  (see note below)
  expo(0)    100 0                gaus(0)     110 0   gausn(0)
  expo(1)    100 1                gaus(1)     110 1   gausn(1)
  xexpo      100 x                xgaus       110 x   xgausn
  yexpo      101 x                ygaus       111 x   ygausn
  zexpo      102 x                zgaus       112 x   zgausn
  xyexpo     105 x                xygaus      115 x   xygausn
  yexpo(5)   102 5                ygaus(5)    111 5   ygausn(5)
  xyexpo(2)  105 2                xygaus(2)   115 2   xygausn(2)
 
  landau      120 x   landaun (see note below)
  landau(0)   120 0   landaun(0)
  landau(1)   120 1   landaun(1)
  xlandau     120 x   xlandaun
  ylandau     121 x   ylandaun
  zlandau     122 x   zlandaun
  xylandau    125 x   xylandaun
  ylandau(5)  121 5   ylandaun(5)
  xylandau(2) 125 2   xylandaun(2)
 
  pol0        130 x               pol1        130 1xx
  pol0(0)     130 0               pol1(0)     130 100
  pol0(1)     130 1               pol1(1)     130 101
  xpol0       130 x               xpol1       130 101
  ypol0       131 x               ypol1       131 101
  zpol0       132 x               zpol1       132 1xx
  ypol0(5)    131 5               ypol1(5)    131 105
 
  pi          40
 
  &&          60                  <            64
  ||          61                  >            65
  ==          62                  <=           66
  !=          63                  =>           67
  !           68
  ==(string)  76                  &            78
  !=(string)  77                  |            79
  <<(shift)   80                  >>(shift)    81
  ? :         82
 
* constants (kConstants) :
 
 c0  141 1      c1  141 2  etc..
 
* strings (kStringConst):
 
 sX  143 x
 
* variables (kFormulaVar) :
 
  x    144 0      y    144 1      z    144 2      t    144 3
 
* parameters :
 
  [1]        140 1
  [2]        140 2
  etc.

Special cases for normalized gaussian or landau distributions

the expression "gaus" is a substitute for

[0]*exp(-0.5*((x-[1])/[2])**2)

to obtain a standard normalized gaussian, use "gausn" instead of "gaus" the expression "gausn" is a substitute for

[0]*exp(-0.5*((x-[1])/[2])**2)/(sqrt(2*pi)*[2]))

WARNING: gaus and gausn are mutually exclusive in the same expression.

In the same way the expression "landau" is a substitute for

[0]*TMath::Landau(x,[1],[2],kFALSE)

to obtain a standard normalized landau, use "landaun" instead of "landau" the expression "landaun" is a substitute for

[0]*TMath::Landau(x,[1],[2],kTRUE)

WARNING: landau and landaun are mutually exclusive in the same expression.

Boolean optimization (kBoolOptmize) :

Those pseudo operation are used to implement lazy evaluation of && and ||. When the left hand of the expression if false (respectively true), the evaluation of the right is entirely skipped (since it would not change the value of the expression).

&& 142 11 (one operation on right) 142 21 (2 operations on right) || 142 12 (one operation on right) 142 22 (2 operations on right)

• functions calls (kFunctionCall) :

  f0 145 0 f1 145 1 etc..

Errors :

1   : Division By Zero
2   : Invalid Floating Point Operation
4   : Empty String
5   : invalid syntax
6   : Too many operators
7   : Too many parameters
10  : z specified but not x and y
11  : z and y specified but not x
12  : y specified but not x
13  : z and x specified but not y
20  : non integer value for parameter number
21  : atan2 requires two arguments
22  : pow requires two arguments
23  : degree of polynomial not specified
24  : Degree of polynomial must be positive
25  : Degree of polynomial must be less than 20
26  : Unknown name
27  : Too many constants in expression
28  : strstr requires two arguments
29  : interpreted or compiled function have to return a numerical type
30  : Bad numerical expression
31  : Part of the variable exist but some of it is not accessible or useable
40  : '(' is expected
41  : ')' is expected
42  : '[' is expected
43  : ']' is expected

Special functions

By default, the formula is assigned fNumber=0. However, the following formula built with simple functions are assigned fNumber:

 "gaus"      100  (or gausn)
 "xygaus"    110
 "expo"      200
 "polN"      300+N
 "landau"    400
 "xylandau"  410

Note that expressions like gaus(0), expo(1) will force fNumber=0

Warning when deriving a class from TFormula

If you overload this member function, you also HAVE TO never call the constructor:

TFormula::TFormula(const char *name,const char *expression)

and write your own constructor

MyClass::MyClass(const char *name,const char *expression) : TFormula()

which has to call the TFormula default constructor and whose implementation should be similar to the implementation of the normal TFormula constructor

This is necessary because the normal TFormula constructor call indirectly the virtual member functions Analyze, DefaultString, DefaultValue and DefaultVariable.

Definition at line 718 of file TFormula_v5.cxx.

AnalyzeFunction()

Bool_t TFormula::AnalyzeFunction ( TString & chaine, Int_t & err, Int_t offset = 0 )

virtualinherited

Check if the chain as function call.

If you overload this member function, you also HAVE TO never call the constructor:

TFormula::TFormula(const char *name,const char *expression)

and write your own constructor

MyClass::MyClass(const char *name,const char *expression) : TFormula()

which has to call the TFormula default constructor and whose implementation should be similar to the implementation of the normal TFormula constructor

This is necessary because the normal TFormula constructor call indirectly the virtual member functions Analyze, DefaultString, DefaultValue and DefaultVariable.

Definition at line 343 of file TFormula_v5.cxx.

AnalyzePrimitive()

Bool_t TTreeFormula::AnalyzePrimitive ( TString & chain, TObjArray & argArr, Int_t & err, Int_t offset )

overrideprotectedvirtual

Check if the given string matches a defined function primitive.

See also

TFormula::AnalyzeFunction

Reimplemented from ROOT::v5::TFormula.

Definition at line 5963 of file TTreeFormula.cxx.

AppendPad()

void TObject::AppendPad ( Option_t * option = "" )

virtualinherited

Append graphics object to current pad.

In case no current pad is set yet, create a default canvas with the name "c1".

Definition at line 204 of file TObject.cxx.

BranchHasMethod()

bool TTreeFormula::BranchHasMethod ( TLeaf * leaf, TBranch * branch, const char * method, const char * params, Long64_t readentry ) const

protected

Return the leaf (if any) of the tree with contains an object of a class having a method which has the name provided in the argument.

Definition at line 3306 of file TTreeFormula.cxx.

Browse()

void TObject::Browse ( TBrowser * b )

virtualinherited

Browse object. May be overridden for another default action.

Reimplemented in RooPlot, ROOT::Experimental::XRooFit::xRooNode, ROOT::Internal::THnBaseBrowsable, TApplicationRemote, TASImage, TAxis3D, TBaseClass, TBranch, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, TBrowserObject, TCanvas, TChain, TClass, TCollection, TCollectionPropertyBrowsable, TDatabasePDG, TDirectory, TDirectoryFile, TEfficiency, TF1, TFolder, TGenerator, TGeoManager, TGeometry, TGeoNode, TGeoOverlap, TGeoTrack, TGeoVolume, TGraph2D, TGraph, TH1, THbookBranch, THbookFile, THbookKey, THnBase, THStack, TKey, TKeyMapFile, TLeaf, TMacro, TMapFile, TMultiDimFit, TMultiGraph, TNode, TNtuple, TNtupleD, TPad, TPair, TParticleClassPDG, TPrincipal, TRecorder, TRemoteObject, TROOT, TRootIconList, TSPlot, TStyle, TSystemDirectory, TSystemFile, TTask, TTree, TTreePerfStats, and TVirtualBranchBrowsable.

Definition at line 218 of file TObject.cxx.

CheckedHash()

ULong_t TObject::CheckedHash ( )

inlineinherited

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

The intent is for this routine to be called instead of directly calling the function Hash during "insert" operations. See TObject::HasInconsistenTObjectHash();

(*) The setup is consistent when all classes in the class hierarchy that overload TObject::Hash do call ROOT::CallRecursiveRemoveIfNeeded in their destructor. i.e. it is safe to call the Hash virtual function during the RecursiveRemove operation.

Definition at line 332 of file TObject.h.

CheckOperands() [1/2]

Bool_t TFormula::CheckOperands ( Int_t leftoperand, Int_t rightoperartion, Int_t & err )

protectedvirtualinherited

Check whether the operands at 'leftoper' and 'oper-1' are compatible with the operation at 'oper'.

Definition at line 2194 of file TFormula_v5.cxx.

CheckOperands() [2/2]

Bool_t TFormula::CheckOperands ( Int_t operation, Int_t & err )

protectedvirtualinherited

Check whether the operand at 'oper-1' is compatible with the operation at 'oper'.

Definition at line 2180 of file TFormula_v5.cxx.

Class()

TClass * TTreeFormula::Class ( )

static

Returns

TClass describing this class

Class_Name()

const char * TTreeFormula::Class_Name ( )

static

Returns

Name of this class

Class_Version()

constexpr Version_t TTreeFormula::Class_Version ( )

inlinestaticconstexpr

Returns

Version of this class

Definition at line 219 of file TTreeFormula.h.

ClassName()

const char * TObject::ClassName ( ) const

virtualinherited

Returns name of class to which the object belongs.

Definition at line 227 of file TObject.cxx.

Clear()

void TFormula::Clear ( Option_t * option = "" )

overridevirtualinherited

Resets the objects.

Resets the object to its state before compilation.

Reimplemented from TObject.

Definition at line 2225 of file TFormula_v5.cxx.

ClearFormula()

void TFormula::ClearFormula ( Option_t * option = "" )

protectedinherited

Resets the objects.

Resets the object to its state before compilation.

Definition at line 2235 of file TFormula_v5.cxx.

Clone()

TObject * TNamed::Clone ( const char * newname = "" ) const

overridevirtualinherited

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 TObject.

Reimplemented in TStreamerInfo, and TTreeIndex.

Definition at line 73 of file TNamed.cxx.

Compare()

Int_t TNamed::Compare ( const TObject * obj ) const

overridevirtualinherited

Compare two TNamed objects.

Returns 0 when equal, -1 when this is smaller and +1 when bigger (like strcmp).

Reimplemented from TObject.

Reimplemented in TStructNodeProperty.

Definition at line 84 of file TNamed.cxx.

Compile()

Int_t TFormula::Compile ( const char * expression = "" )

virtualinherited

Compile expression already stored in fTitle.

Loop on all subexpressions of formula stored in fTitle

If you overload this member function, you also HAVE TO never call the constructor:

TFormula::TFormula(const char *name,const char *expression)

and write your own constructor

MyClass::MyClass(const char *name,const char *expression) : TFormula()

which has to call the TFormula default constructor and whose implementation should be similar to the implementation of the normal TFormula constructor

This is necessary because the normal TFormula constructor call indirectly the virtual member functions Analyze, DefaultString, DefaultValue and DefaultVariable.

Definition at line 2303 of file TFormula_v5.cxx.

Convert()

void TTreeFormula::Convert ( UInt_t fromVersion )

overrideprotectedvirtual

Reimplemented from ROOT::v5::TFormula.

Definition at line 5848 of file TTreeFormula.cxx.

Copy()

void TFormula::Copy ( TObject & formula ) const

overridevirtualinherited

Copy this formula.

Reimplemented from TObject.

Definition at line 2473 of file TFormula_v5.cxx.

DeclFileName()

const char * TTreeFormula::DeclFileName ( )

inlinestatic

Returns

Name of the file containing the class declaration

Definition at line 219 of file TTreeFormula.h.

DefineAlternate()

Int_t TTreeFormula::DefineAlternate ( const char * expression )

protected

This method check for treat the case where expression contains Alt$( and load up both fAliases and fExpr.

It also checks for MinIf$( and MaxIf$( We return:

• -1 in case of failure
• 0 in case we did not find any of Alt$(, MinIf$(, or MaxIf$(
• the action number in case of success. (kAlternate, kMinIf or kMaxIf)

Definition at line 677 of file TTreeFormula.cxx.

DefineDimensions()

void TTreeFormula::DefineDimensions ( Int_t code, Int_t size, TFormLeafInfoMultiVarDim * info, Int_t & virt_dim )

protected

This method is used internally to decode the dimensions of the variables.

Definition at line 373 of file TTreeFormula.cxx.

DefinedString()

char * TFormula::DefinedString ( Int_t code )

virtualinherited

Return address of string corresponding to special code.

This member function is inactive in the TFormula class. It may be redefined in derived classes.

If you overload this member function, you also HAVE TO never call the constructor:

TFormula::TFormula(const char *name,const char *expression)

and write your own constructor

MyClass::MyClass(const char *name,const char *expression) : TFormula()

which has to call the TFormula default constructor and whose implementation should be similar to the implementation of the normal TFormula constructor

This is necessary because the normal TFormula constructor call indirectly the virtual member functions Analyze, DefaultString, DefaultValue and DefaultVariable.

Definition at line 2564 of file TFormula_v5.cxx.

DefinedValue()

Double_t TFormula::DefinedValue ( Int_t code )

virtualinherited

Return value corresponding to special code.

This member function is inactive in the TFormula class. It may be redefined in derived classes.

If you overload this member function, you also HAVE TO never call the constructor:

TFormula::TFormula(const char *name,const char *expression)

and write your own constructor

MyClass::MyClass(const char *name,const char *expression) : TFormula()

which has to call the TFormula default constructor and whose implementation should be similar to the implementation of the normal TFormula constructor

This is necessary because the normal TFormula constructor call indirectly the virtual member functions Analyze, DefaultString, DefaultValue and DefaultVariable.

Definition at line 2595 of file TFormula_v5.cxx.

DefinedVariable()

Int_t TTreeFormula::DefinedVariable ( TString & name, Int_t & action )

overridevirtual

Check if name is in the list of Tree/Branch leaves.

This member function redefines the function in ROOT::v5::TFormula If a leaf has a name corresponding to the argument name, then returns a new code.

A TTreeFormula may contain more than one variable. For each variable referenced, the pointers to the corresponding branch and leaf is stored in the object arrays fBranches and fLeaves.

name can be :

• Leaf_Name (simple variable or data member of a ClonesArray)
• Branch_Name.Leaf_Name
• Branch_Name.Method_Name
• Leaf_Name[index]
• Branch_Name.Leaf_Name[index]
• Branch_Name.Leaf_Name[index1]
• Branch_Name.Leaf_Name[][index2]
• Branch_Name.Leaf_Name[index1][index2]

New additions:

• Branch_Name.Leaf_Name[OtherLeaf_Name]
• Branch_Name.Datamember_Name

• '.' can be replaced by '->'

  and

• Branch_Name[index1].Leaf_Name[index2]
• Leaf_name[index].Action().OtherAction(param)
• Leaf_name[index].Action()[val].OtherAction(param)

The expected returned values are

• -2 : the name has been recognized but won't be usable
• -1 : the name has not been recognized, or is too long, or tree does not exist.
• >=0 : the name has been recognized, return the internal code for this name.

Reimplemented from ROOT::v5::TFormula.

Definition at line 2751 of file TTreeFormula.cxx.

Delete()

void TObject::Delete ( Option_t * option = "" )

virtualinherited

Delete this object.

Typically called as a command via the interpreter. Normally use "delete" operator when object has been allocated on the heap.

Reimplemented in RooLinkedList, TAxis, TBtree, TCanvas, TClonesArray, TCollection, TDirectory, TDirectoryFile, TExMap, TFile, TGFrame, TGItemContext, TGTextEdit, THashList, THashTable, TKey, TKeySQL, TKeyXML, TList, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TMap, TMVA::Results, TObjArray, TObjectTable, TOrdCollection, TProtoClass, TQCommand, TRefArray, TSystemDirectory, TSystemFile, TThread, TTree, TTreeViewer, TViewPubDataMembers, and TViewPubFunctions.

Definition at line 268 of file TObject.cxx.

DistancetoPrimitive()

Int_t TObject::DistancetoPrimitive ( Int_t px, Int_t py )

virtualinherited

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

This member function must be implemented for each graphics primitive. This default function returns a big number (999999).

Reimplemented in TASImage, TAxis3D, TAxis, TBox, TBRIK, TColorWheel, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEfficiency, TEllipse, TF1, TF2, TF3, TFileDrawMap, TGenerator, TGeoBBox, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoEltu, TGeoHalfSpace, TGeoHype, TGeoNode, TGeoOverlap, TGeoParaboloid, TGeoPcon, TGeoPgon, TGeoScaledShape, TGeoShape, TGeoShapeAssembly, TGeoSphere, TGeoTessellated, TGeoTorus, TGeoTrack, TGeoTube, TGeoTubeSeg, TGeoVGShape, TGeoVolume, TGeoXtru, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLScenePad, TGLTH3Composition, TGLViewer, TGraph2D, TGraph, TGraphEdge, TGraphNode, TGraphPolargram, TH1, THistPainter, THStack, TLine, TMarker3DBox, TMarker, TMultiGraph, TNode, TPad, TPaletteAxis, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TParticle, TPave, TPCON, TPie, TPieSlice, TPoints3DABC, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TPrimary, TScatter2D, TScatter, TSPHE, TSpider, TSpline, TStyle, TText, TTreePerfStats, TTUBE, TTUBS, TVirtualHistPainter, and TXTRU.

Definition at line 284 of file TObject.cxx.

DoError()

void TObject::DoError ( int level, const char * location, const char * fmt, va_list va ) const

protectedvirtualinherited

Interface to ErrorHandler (protected).

Reimplemented in TThread, and TTreeViewer.

Definition at line 1059 of file TObject.cxx.

Draw()

void TObject::Draw ( Option_t * option = "" )

virtualinherited

Default Draw method for all objects.

Reimplemented in RooAbsData, RooPlot, RooStats::HypoTestInverterPlot, RooStats::SamplingDistPlot, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoPoint, ROOT::Experimental::XRooFit::xRooNLLVar::xRooHypoSpace, ROOT::Experimental::XRooFit::xRooNode, ROOT::RGeoPainter, TArrow, TASImage, TBox, TBrowser, TButton, TCanvas, TChain, TClass, TClassTree, TCollection, TColorWheel, TDiamond, TDirectory, TEfficiency, TEllipse, TEveGeoNode, TEveGeoTopNode, TF1, TF2, TF3, TFile, TFITSHDU, TFrame, TGenerator, TGeoBatemanSol, TGeometry, TGeoNode, TGeoOverlap, TGeoPainter, TGeoParallelWorld, TGeoPhysicalNode, TGeoPolygon, TGeoShape, TGeoTrack, TGeoVGShape, TGeoVolume, TGItemContext, TGListTree, TGPicture, TGraph2D, TGraph, TGraphPolar, TGraphPolargram, TGraphStruct, TGraphTime, TH1, THelix, THStack, TLegend, TMarker, TMatrixTBase< Element >, TMatrixTBase< Double_t >, TMatrixTBase< Float_t >, TMultiDimFit, TMultiGraph, TMultiLayerPerceptron, TNode, TNodeDiv, TPad, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TPave, TPaveLabel, TPavesText, TPaveText, TPie, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TRatioPlot, TSpider, TSpline, TStructViewer, TStructViewerGUI, TTree, TTreePerfStats, TVectorT< Element >, TVectorT< Double_t >, TVectorT< Float_t >, TVirtualPad, and TWbox.

Definition at line 293 of file TObject.cxx.

DrawClass()

void TObject::DrawClass ( ) const

virtualinherited

Draw class inheritance tree of the class to which this object belongs.

If a class B inherits from a class A, description of B is drawn on the right side of description of A. Member functions overridden by B are shown in class A with a blue line crossing-out the corresponding member function. The following picture is the class inheritance tree of class TPaveLabel:

Reimplemented in TGFrame, TSystemDirectory, and TSystemFile.

Definition at line 308 of file TObject.cxx.

DrawClone()

TObject * TObject::DrawClone ( Option_t * option = "" ) const

virtualinherited

Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).

If pad was not selected - gPad will be used.

Note

For histograms, use the more specialised TH1::DrawCopy().

Reimplemented in TAxis, TCanvas, TGFrame, TSystemDirectory, and TSystemFile.

Definition at line 319 of file TObject.cxx.

Dump()

void TObject::Dump ( ) const

virtualinherited

Dump contents of object on stdout.

Using the information in the object dictionary (class TClass) each data member is interpreted. If a data member is a pointer, the pointer value is printed

The following output is the Dump of a TArrow object:

fAngle                   0           Arrow opening angle (degrees)
fArrowSize               0.2         Arrow Size
fOption.*fData
fX1                      0.1         X of 1st point
fY1                      0.15        Y of 1st point
fX2                      0.67        X of 2nd point
fY2                      0.83        Y of 2nd point
fUniqueID                0           object unique identifier
fBits                    50331648    bit field status word
fLineColor               1           line color
fLineStyle               1           line style
fLineWidth               1           line width
fFillColor               19          fill area color
fFillStyle               1001        fill area style

Reimplemented in TClass, TCollection, TGFrame, TGPack, and TSystemFile.

Definition at line 367 of file TObject.cxx.

Error()

void TObject::Error ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue error message.

Use "location" to specify the method where the error occurred. Accepts standard printf formatting arguments.

Reimplemented in TFitResult.

Definition at line 1098 of file TObject.cxx.

Eval()

Double_t TFormula::Eval ( Double_t x, Double_t y = 0, Double_t z = 0, Double_t t = 0 ) const

virtualinherited

Evaluate this formula.

The current value of variables x,y,z,t is passed through x, y, z and t. The parameters used will be the ones in the array params if params is given otherwise parameters will be taken from the stored data members fParams

Definition at line 2675 of file TFormula_v5.cxx.

EvalClass() [1/2]

TClass * TTreeFormula::EvalClass ( ) const

virtual

Evaluate the class of this treeformula.

If the 'value' of this formula is a simple pointer to an object, this function returns the TClass corresponding to its type.

Definition at line 3668 of file TTreeFormula.cxx.

EvalClass() [2/2]

TClass * TTreeFormula::EvalClass ( Int_t oper ) const

protectedvirtual

Evaluate the class of the operation oper.

If the 'value' in the requested operation is a simple pointer to an object, this function returns the TClass corresponding to its type.

Definition at line 3681 of file TTreeFormula.cxx.

EvalInstance() [1/2]

virtual Double_t TTreeFormula::EvalInstance ( Int_t i = 0, const char * stringStack[] = nullptr )

inlinevirtual

Double_t template specialization of EvalInstance.

Definition at line 185 of file TTreeFormula.h.

EvalInstance() [2/2]

template<typename T>

T TTreeFormula::EvalInstance	(	Int_t	instance = 0,
		const char *	stringStackArg[] = nullptr )

Evaluate this treeformula.

Template Parameters

T	The type used to interpret the numbers then used for the operations

Parameters

instance	iteration instance
stringStackArg	formula as string

Returns

the result of the evaluation, or a signaling NaN if out of bounds

Warning

Care has to be taken before calling this function with std::vector or dynamically sized objects, rather than plain fixed-size arrays. For example, this works without problems:

TTree t("t", "t");
Float_t x[2]{};
t.Branch("xa", &x, "x[2]/F");
x[1] = 1;
t.Fill();
x[1] = 2;
t.Fill();
t.Scan();
TTreeFormula tfx("tfx", "xa[1]", &t);
t.GetEntry(0);
tfx.EvalInstance()
t.GetEntry(1);
tfx.EvalInstance()

But the following fails (independently on whether the size changed or not between entries):

TTree t("t", "t");
vector<Short_t> v;
t.Branch("vec", &v);
v.push_back(2);
v.push_back(3);
t.Fill();
v.clear();
v.push_back(4);
v.push_back(5);
t.Fill();
t.Scan();
TTreeFormula tfv1("tfv1", "vec[1]", &t);
TTreeFormula tfv("tfv", "vec", &t);
t.GetEntry(0);
tfv1.EvalInstance()
tfv.EvalInstance(1)
t.GetEntry(1);
tfv1.EvalInstance()
tfv.EvalInstance(1)

To prevent this, when working with objects with dynamic size for each entry, one needs to mimick what TTree::Scan does, i.e. to check the value of GetNdata() before calling EvalInstance():

t.GetEntry(0);
if (tfv1.GetNdata() > 0)
   tfv1.EvalInstance()
if (tfv.GetNdata() > 1)
   tfv.EvalInstance(1)
t.GetEntry(1);
if (tfv1.GetNdata() > 0)
   tfv1.EvalInstance()
if (tfv.GetNdata() > 1)
   tfv.EvalInstance(1)

Note that for tfv1, even if the index is fixed in the formula and even if each entry had the same std::vector size, since the formula contains a branch with theoretically variable size, one must check GetNData() as there might 0 or 1 answers. Since even with fixed index, the collection might be too small to fulfill it. TTreeFormula::GetMultiplicity tells you (indirectly) whether you need to call GetNData or not for a given formula.

Definition at line 4124 of file TTreeFormula.cxx.

EvalInstance64()

virtual Long64_t TTreeFormula::EvalInstance64 ( Int_t i = 0, const char * stringStack[] = nullptr )

inlinevirtual

Long64_t template specialization of EvalInstance.

Definition at line 187 of file TTreeFormula.h.

EvalInstanceLD()

virtual LongDouble_t TTreeFormula::EvalInstanceLD ( Int_t i = 0, const char * stringStack[] = nullptr )

inlinevirtual

LongDouble_t template specialization of EvalInstance.

Definition at line 189 of file TTreeFormula.h.

EvalObject()

void * TTreeFormula::EvalObject ( Int_t i = 0 )

virtual

Evaluate this treeformula.

Return the address of the object pointed to by the formula. Return 0 if the formula is not a single object The object type can be retrieved using by call EvalClass();

Definition at line 3730 of file TTreeFormula.cxx.

EvalPar()

virtual Double_t ROOT::v5::TFormula::EvalPar ( const Double_t * x, const Double_t * params = nullptr )

inlinevirtualinherited

Definition at line 236 of file TFormula.h.

EvalParFast()

Double_t TFormula::EvalParFast ( const Double_t * x, const Double_t * uparams )

protectedinherited

Evaluate this formula.

The current value of variables x,y,z,t is passed through the pointer x. The parameters used will be the ones in the array params if params is given otherwise parameters will be taken from the stored data members fParams

Definition at line 4198 of file TFormula_v5.cxx.

EvalParOld()

Double_t TFormula::EvalParOld ( const Double_t * x, const Double_t * uparams = nullptr )

virtualinherited

Evaluate this formula.

The current value of variables x,y,z,t is passed through the pointer x. The parameters used will be the ones in the array params if params is given otherwise parameters will be taken from the stored data members fParams

Definition at line 2694 of file TFormula_v5.cxx.

EvalPrimitive()

Double_t TFormula::EvalPrimitive ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4123 of file TFormula_v5.cxx.

EvalPrimitive0()

Double_t TFormula::EvalPrimitive0 ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4144 of file TFormula_v5.cxx.

EvalPrimitive1()

Double_t TFormula::EvalPrimitive1 ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4153 of file TFormula_v5.cxx.

EvalPrimitive2()

Double_t TFormula::EvalPrimitive2 ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4162 of file TFormula_v5.cxx.

EvalPrimitive3()

Double_t TFormula::EvalPrimitive3 ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4172 of file TFormula_v5.cxx.

EvalPrimitive4()

Double_t TFormula::EvalPrimitive4 ( const Double_t * x, const Double_t * params )

protectedinherited

Evaluate primitive formula.

Definition at line 4182 of file TFormula_v5.cxx.

EvalStringInstance()

const char * TTreeFormula::EvalStringInstance ( Int_t i = 0 )

virtual

Eval the instance as a string.

Definition at line 3785 of file TTreeFormula.cxx.

Execute() [1/2]

void TObject::Execute ( const char * method, const char * params, Int_t * error = nullptr )

virtualinherited

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

"3.14,1,\"text\"".

Reimplemented in ROOT::R::TRInterface, TCling, TContextMenu, TInterpreter, and TMethodCall.

Definition at line 378 of file TObject.cxx.

Execute() [2/2]

void TObject::Execute ( TMethod * method, TObjArray * params, Int_t * error = nullptr )

virtualinherited

Execute method on this object with parameters stored in the TObjArray.

The TObjArray should contain an argv vector like:

argv[0] ... argv[n] = the list of TObjString parameters

Reimplemented in ROOT::R::TRInterface, TCling, TContextMenu, TInterpreter, and TMethodCall.

Definition at line 398 of file TObject.cxx.

ExecuteEvent()

void TObject::ExecuteEvent ( Int_t event, Int_t px, Int_t py )

virtualinherited

Execute action corresponding to an event at (px,py).

This method must be overridden if an object can react to graphics events.

Reimplemented in TASImage, TASPaletteEditor::LimitLine, TAxis3D, TAxis, TBox, TButton, TCanvas, TCrown, TCurlyArc, TCurlyLine, TDiamond, TEfficiency, TEllipse, TF1, TF2, TF3, TFrame, TGenerator, TGeoManager, TGeoNode, TGeoOverlap, TGeoShape, TGeoTrack, TGeoVolume, TGL5DDataSet, TGLEventHandler, TGLHistPainter, TGLParametricEquation, TGLScenePad, TGLTH3Composition, TGLViewer, TGraph2D, TGraph, TGraphEdge, TGraphNode, TGraphPolargram, TGroupButton, TH1, THistPainter, TLine, TLink, TMarker3DBox, TMarker, TNode, TPad, TPaletteAxis, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TParticle, TPave, TPie, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TPrimary, TScatter2D, TScatter, TSliderBox, TSpider, TSpline, TText, TTreePerfStats, TView3D, TView, TVirtualHistPainter, and TWbox.

Definition at line 415 of file TObject.cxx.

Fatal()

void TObject::Fatal ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue fatal error message.

Use "location" to specify the method where the fatal error occurred. Accepts standard printf formatting arguments.

Definition at line 1126 of file TObject.cxx.

FillBuffer()

void TNamed::FillBuffer ( char *& buffer )

virtualinherited

Encode TNamed into output buffer.

Reimplemented in TDirectoryFile, TFile, TKey, TKeySQL, TKeyXML, TSQLFile, and TXMLFile.

Definition at line 103 of file TNamed.cxx.

FindLeafForExpression()

Int_t TTreeFormula::FindLeafForExpression ( const char * expression, TLeaf *& leaf, TString & leftover, bool & final, UInt_t & paran_level, TObjArray & castqueue, std::vector< std::string > & aliasUsed, bool & useLeafCollectionObject, const char * fullExpression )

protected

Look for the leaf corresponding to the start of expression.

It returns the corresponding leaf if any. It also modify the following arguments:

• leftover: contain from expression that was not used to determine the leaf
• final:
  • paran_level: number of un-matched open parenthesis
  • cast_queue: list of cast to be done
  • aliases: list of aliases used
• Return <0 in case of failure
• Return 0 if a leaf has been found
• Return 2 if info about the TTree itself has been requested.

Definition at line 2240 of file TTreeFormula.cxx.

FindObject() [1/2]

TObject * TObject::FindObject ( const char * name ) const

virtualinherited

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object by name inside this object.

Reimplemented in RooAbsCollection, RooLinkedList, TBtree, TCollection, TDirectory, TFolder, TGeometry, TGraph2D, TGraph, TH1, THashList, THashTable, THbookFile, TList, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TListOfTypes, TMap, TObjArray, TPad, TROOT, TViewPubDataMembers, and TViewPubFunctions.

Definition at line 425 of file TObject.cxx.

FindObject() [2/2]

TObject * TObject::FindObject ( const TObject * obj ) const

virtualinherited

Must be redefined in derived classes.

This function is typically used with TCollections, but can also be used to find an object inside this object.

Reimplemented in RooAbsCollection, RooLinkedList, TBtree, TCollection, TDirectory, TFolder, TGeometry, TGraph2D, TGraph, TH1, THashList, THashTable, THbookFile, TList, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TListOfTypes, TMap, TObjArray, TPad, TROOT, TViewPubDataMembers, and TViewPubFunctions.

Definition at line 435 of file TObject.cxx.

GetAction()

Short_t ROOT::v5::TFormula::GetAction ( Int_t code ) const

inlineprotectedinherited

Definition at line 105 of file TFormula.h.

GetActionOptimized()

Short_t ROOT::v5::TFormula::GetActionOptimized ( Int_t code ) const

inlineprotectedinherited

Definition at line 113 of file TFormula.h.

GetActionParam()

Int_t ROOT::v5::TFormula::GetActionParam ( Int_t code ) const

inlineprotectedinherited

Definition at line 106 of file TFormula.h.

GetActionParamOptimized()

Int_t ROOT::v5::TFormula::GetActionParamOptimized ( Int_t code ) const

inlineprotectedinherited

Definition at line 114 of file TFormula.h.

GetConstant() [1/3]

template<typename T>

T TTreeFormula::GetConstant ( Int_t k )

inlineprivate

Definition at line 4032 of file TTreeFormula.cxx.

GetConstant() [2/3]

template<>

Long64_t TTreeFormula::GetConstant ( Int_t k )

inline

Definition at line 4053 of file TTreeFormula.cxx.

GetConstant() [3/3]

template<>

LongDouble_t TTreeFormula::GetConstant ( Int_t k )

inline

Definition at line 4033 of file TTreeFormula.cxx.

GetDrawOption()

Option_t * TObject::GetDrawOption ( ) const

virtualinherited

Get option used by the graphics system to draw this object.

Note that before calling object.GetDrawOption(), you must have called object.Draw(..) before in the current pad.

Reimplemented in TBrowser, TFitEditor, TGedFrame, TGFileBrowser, TRootBrowser, and TRootBrowserLite.

Definition at line 445 of file TObject.cxx.

GetDtorOnly()

Longptr_t TObject::GetDtorOnly ( )

staticinherited

Return destructor only flag.

Definition at line 1196 of file TObject.cxx.

GetExpFormula()

TString TFormula::GetExpFormula ( Option_t * option = "" ) const

virtualinherited

Reconstruct the formula expression from the internal TFormula member variables.

This function uses the internal member variables of TFormula to construct the mathematical expression associated with the TFormula instance. This function can be used to get an expanded version of the expression originally assigned to the TFormula instance, i.e. that the string returned by GetExpFormula() doesn't depend on other TFormula object names.

if option contains "p" the returned string will contain the formula expression with symbolic parameters, eg [0] replaced by the actual value of the parameter. Example: if expression in formula is: "[0]*(x>-[1])+[2]*exp(-[3]*x)" and parameters are 3.25,-4.01,4.44,-0.04, GetExpFormula("p") will return: "(3.25*(x>+4.01))+(4.44*exp(+0.04*x))"

Note

Floats when option contains "p" are printed with g (6 decimals); if you need more precision, use instead the non-v5 version of this class.

See also

https://cplusplus.com/reference/cstdio/printf/

Definition at line 3032 of file TFormula_v5.cxx.

GetIconName()

const char * TObject::GetIconName ( ) const

virtualinherited

Returns mime type name of object.

Used by the TBrowser (via TGMimeTypes class). Override for class of which you would like to have different icons for objects of the same class.

Reimplemented in ROOT::Experimental::XRooFit::xRooNode, TASImage, TBranch, TBranchElement, TGeoVolume, TGMainFrame, TKey, TMethodBrowsable, TSystemFile, and TVirtualBranchBrowsable.

Definition at line 472 of file TObject.cxx.

GetLeaf()

TLeaf * TTreeFormula::GetLeaf ( Int_t n ) const

virtual

Return leaf corresponding to serial number n.

Definition at line 4620 of file TTreeFormula.cxx.

GetLeafInfo()

TFormLeafInfo * TTreeFormula::GetLeafInfo

(

Int_t

code

)

const

Return DataMember corresponding to code.

function called by TLeafObject::GetValue with the value of fLookupType computed in TTreeFormula::DefinedVariable

Definition at line 4611 of file TTreeFormula.cxx.

GetLeafWithDatamember()

TLeaf * TTreeFormula::GetLeafWithDatamember ( const char * topchoice, const char * nextchice, Long64_t readentry ) const

protected

Return the leaf (if any) which contains an object containing a data member which has the name provided in the arguments.

Definition at line 3132 of file TTreeFormula.cxx.

GetLinearPart()

const TObject * TFormula::GetLinearPart ( Int_t i )

virtualinherited

Return linear part.

Definition at line 3222 of file TFormula_v5.cxx.

GetManager()

TTreeFormulaManager * TTreeFormula::GetManager ( ) const

inline

Definition at line 195 of file TTreeFormula.h.

GetMaxima()

void TFormula::GetMaxima ( Int_t & maxop, Int_t & maxpar, Int_t & maxconst )

staticinherited

static function to get the maximum value of 3 parameters -maxop : maximum number of operations -maxpar : maximum number of parameters -maxconst : maximum number of constants

Definition at line 4549 of file TFormula_v5.cxx.

GetMethodCall()

TMethodCall * TTreeFormula::GetMethodCall

(

Int_t

code

)

const

Return methodcall corresponding to code.

function called by TLeafObject::GetValue with the value of fLookupType computed in TTreeFormula::DefinedVariable

Definition at line 4631 of file TTreeFormula.cxx.

GetMultiplicity()

virtual Int_t TTreeFormula::GetMultiplicity ( ) const

inlinevirtual

Definition at line 197 of file TTreeFormula.h.

GetName()

const char * TNamed::GetName ( ) const

inlineoverridevirtualinherited

Returns name of object.

This default method returns the class name. Classes that give objects a name should override this method.

Reimplemented from TObject.

Definition at line 49 of file TNamed.h.

GetNcodes()

virtual Int_t TTreeFormula::GetNcodes ( ) const

inlinevirtual

Definition at line 199 of file TTreeFormula.h.

GetNdata()

Int_t TTreeFormula::GetNdata ( )

virtual

Return number of available instances in the formula.

Definition at line 4640 of file TTreeFormula.cxx.

GetNdim()

virtual Int_t ROOT::v5::TFormula::GetNdim ( ) const

inlinevirtualinherited

Definition at line 238 of file TFormula.h.

GetNpar()

virtual Int_t ROOT::v5::TFormula::GetNpar ( ) const

inlinevirtualinherited

Definition at line 239 of file TFormula.h.

GetNumber()

virtual Int_t ROOT::v5::TFormula::GetNumber ( ) const

inlinevirtualinherited

Definition at line 240 of file TFormula.h.

GetObjectInfo()

char * TObject::GetObjectInfo ( Int_t px, Int_t py ) const

virtualinherited

Returns string containing info about the object at position (px,py).

This method is typically overridden by classes of which the objects can report peculiarities for different positions. Returned string will be re-used (lock in MT environment).

Reimplemented in TASImage, TAxis3D, TColorWheel, TF1, TF2, TFileDrawMap, TGeoNode, TGeoTrack, TGeoVolume, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGraph, TH1, THistPainter, TNode, TPaletteAxis, TParallelCoordVar, and TVirtualHistPainter.

Definition at line 491 of file TObject.cxx.

GetObjectStat()

Bool_t TObject::GetObjectStat ( )

staticinherited

Get status of object stat flag.

Definition at line 1181 of file TObject.cxx.

GetOper()

Int_t * ROOT::v5::TFormula::GetOper ( ) const

inlineprotectedinherited

Definition at line 104 of file TFormula.h.

GetOperOptimized()

Int_t * ROOT::v5::TFormula::GetOperOptimized ( ) const

inlineprotectedinherited

Definition at line 112 of file TFormula.h.

GetOption()

virtual Option_t * TObject::GetOption ( ) const

inlinevirtualinherited

Reimplemented in TArrow, TAxis3D, TFile, TGaxis, TGeoVolume, TH1, THelix, TLegendEntry, TMapFile, TNode, TPave, TPoints3DABC, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TPSocket, TSelector, TSocket, and TUDPSocket.

Definition at line 147 of file TObject.h.

GetParameter() [1/2]

Double_t TFormula::GetParameter ( const char * name ) const

inherited

Return value of parameter named parName.

Definition at line 3241 of file TFormula_v5.cxx.

GetParameter() [2/2]

Double_t TFormula::GetParameter ( Int_t ipar ) const

inherited

Return value of parameter number ipar.

Definition at line 3232 of file TFormula_v5.cxx.

GetParameters() [1/2]

virtual Double_t * ROOT::v5::TFormula::GetParameters ( ) const

inlinevirtualinherited

Definition at line 244 of file TFormula.h.

GetParameters() [2/2]

virtual void ROOT::v5::TFormula::GetParameters ( Double_t * params )

inlinevirtualinherited

Definition at line 245 of file TFormula.h.

GetParName()

const char * TFormula::GetParName ( Int_t ipar ) const

virtualinherited

Return name of one parameter.

Definition at line 3255 of file TFormula_v5.cxx.

GetParNumber()

Int_t TFormula::GetParNumber ( const char * name ) const

virtualinherited

Return parameter number by name.

Definition at line 3265 of file TFormula_v5.cxx.

GetRealInstance()

Int_t TTreeFormula::GetRealInstance ( Int_t instance, Int_t codeindex )

protected

Now let calculate what physical instance we really need.

Some redundant code is used to speed up the cases where they are no dimensions.

We know that instance is less that fCumulUsedSize[0] so we can skip the modulo when virt_dim is 0.

Definition at line 3433 of file TTreeFormula.cxx.

GetTitle()

const char * TNamed::GetTitle ( ) const

inlineoverridevirtualinherited

Returns title of object.

This default method returns the class title (i.e. description). Classes that give objects a title should override this method.

Reimplemented from TObject.

Definition at line 50 of file TNamed.h.

GetTree()

virtual TTree * TTreeFormula::GetTree ( ) const

inlinevirtual

Definition at line 216 of file TTreeFormula.h.

GetUniqueID()

UInt_t TObject::GetUniqueID ( ) const

virtualinherited

Return the unique object id.

Definition at line 480 of file TObject.cxx.

GetValueFromMethod()

Double_t TTreeFormula::GetValueFromMethod ( Int_t i, TLeaf * leaf ) const

protectedvirtual

Return result of a leafobject method.

Definition at line 4648 of file TTreeFormula.cxx.

GetValuePointerFromMethod()

void * TTreeFormula::GetValuePointerFromMethod ( Int_t i, TLeaf * leaf ) const

protectedvirtual

Return result of a leafobject method.

Definition at line 4709 of file TTreeFormula.cxx.

HandleTimer()

Bool_t TObject::HandleTimer ( TTimer * timer )

virtualinherited

Execute action in response of a timer timing out.

This method must be overridden if an object has to react to timers.

Reimplemented in TGCommandPlugin, TGDNDManager, TGFileContainer, TGHtml, TGLEventHandler, TGPopupMenu, TGraphTime, TGScrollBar, TGShutter, TGTextEdit, TGTextEditor, TGTextEntry, TGTextView, TGToolTip, TGuiBldDragManager, TGWindow, and TTreeViewer.

Definition at line 516 of file TObject.cxx.

Hash()

ULong_t TNamed::Hash ( ) const

inlineoverridevirtualinherited

Return hash value for this object.

Note: If this routine is overloaded in a derived class, this derived class should also add

ROOT::CallRecursiveRemoveIfNeeded(*this)

Otherwise, when RecursiveRemove is called (by ~TObject or example) for this type of object, the transversal of THashList and THashTable containers will will have to be done without call Hash (and hence be linear rather than logarithmic complexity). You will also see warnings like

Error in <ROOT::Internal::TCheckHashRecursiveRemoveConsistency::CheckRecursiveRemove>: The class SomeName overrides
TObject::Hash but does not call TROOT::RecursiveRemove in its destructor.

Reimplemented from TObject.

Definition at line 51 of file TNamed.h.

HasInconsistentHash()

Bool_t TObject::HasInconsistentHash ( ) const

inlineinherited

Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

missing call to RecursiveRemove in destructor).

Note: Since the consistency is only tested for during inserts, this routine will return true for object that have never been inserted whether or not they have a consistent setup. This has no negative side-effect as searching for the object with the right or wrong Hash will always yield a not-found answer (Since anyway no hash can be guaranteed unique, there is always a check)

Definition at line 366 of file TObject.h.

Info()

void TObject::Info ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue info message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 1072 of file TObject.cxx.

InheritsFrom() [1/2]

Bool_t TObject::InheritsFrom ( const char * classname ) const

virtualinherited

Returns kTRUE if object inherits from class "classname".

Reimplemented in TClass.

Definition at line 549 of file TObject.cxx.

InheritsFrom() [2/2]

Bool_t TObject::InheritsFrom ( const TClass * cl ) const

virtualinherited

Returns kTRUE if object inherits from TClass cl.

Reimplemented in TClass.

Definition at line 557 of file TObject.cxx.

Init()

void TTreeFormula::Init ( const char * name, const char * formula )

protected

Initialization called from the constructors.

Definition at line 195 of file TTreeFormula.cxx.

Inspect()

void TObject::Inspect ( ) const

virtualinherited

Dump contents of this object in a graphics canvas.

Same action as Dump but in a graphical form. In addition pointers to other objects can be followed.

The following picture is the Inspect of a histogram object:

Reimplemented in ROOT::Experimental::XRooFit::xRooNode, TGFrame, TInspectorObject, and TSystemFile.

Definition at line 570 of file TObject.cxx.

InvertBit()

void TObject::InvertBit ( UInt_t f )

inlineinherited

Definition at line 206 of file TObject.h.

IsA()

TClass * TTreeFormula::IsA ( ) const

inlineoverridevirtual

Returns

TClass describing current object

Reimplemented from ROOT::v5::TFormula.

Definition at line 219 of file TTreeFormula.h.

IsDestructed()

Bool_t TObject::IsDestructed ( ) const

inlineinherited

IsDestructed.

Note

This function must be non-virtual as it can be used on destructed (but not yet modified) memory. This is used for example in TClonesArray to record the element that have been destructed but not deleted and thus are ready for re-use (by operator new with placement).

Returns

true if this object's destructor has been run.

Definition at line 186 of file TObject.h.

IsEqual()

Bool_t TObject::IsEqual ( const TObject * obj ) const

virtualinherited

Default equal comparison (objects are equal if they have the same address in memory).

More complicated classes might want to override this function.

Reimplemented in TGObject, TObjString, TPair, and TQCommand.

Definition at line 589 of file TObject.cxx.

IsFolder()

Bool_t TObject::IsFolder ( ) const

virtualinherited

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

Reimplemented in ROOT::Experimental::XRooFit::xRooNode, ROOT::Internal::THnBaseBrowsable, TApplicationRemote, TAxis3D, TBaseClass, TBranch, TBranchClones, TBranchElement, TBranchObject, TBranchSTL, TBrowserObject, TCanvas, TClass, TCollection, TDatabasePDG, TDirectory, TFolder, TGeoManager, TGeometry, TGeoNode, TGeoNodeMatrix, TGeoOverlap, TGeoTrack, TGeoVolume, THbookFile, THbookKey, THnBase, TKey, TMapFile, TMultiDimFit, TNode, TPad, TPair, TParticleClassPDG, TPrincipal, TRemoteObject, TROOT, TRootIconList, TSPlot, TSystemDirectory, TTask, TTree, and TVirtualBranchBrowsable.

Definition at line 579 of file TObject.cxx.

IsInteger()

bool TTreeFormula::IsInteger ( bool fast = true ) const

virtual

Return TRUE if the formula corresponds to one single Tree leaf and this leaf is short, int or unsigned short, int When a leaf is of type integer or string, the generated histogram is forced to have an integer bin width.

Definition at line 4778 of file TTreeFormula.cxx.

IsLeafInteger()

bool TTreeFormula::IsLeafInteger ( Int_t code ) const

protectedvirtual

Return TRUE if the leaf corresponding to code is short, int or unsigned short, int When a leaf is of type integer, the generated histogram is forced to have an integer bin width.

Definition at line 4833 of file TTreeFormula.cxx.

IsLeafString()

bool TTreeFormula::IsLeafString ( Int_t code ) const

protectedvirtual

Return TRUE if the leaf or data member corresponding to code is a string.

Definition at line 4903 of file TTreeFormula.cxx.

IsLinear()

virtual Bool_t ROOT::v5::TFormula::IsLinear ( ) const

inlinevirtualinherited

Definition at line 248 of file TFormula.h.

IsNormalized()

virtual Bool_t ROOT::v5::TFormula::IsNormalized ( ) const

inlinevirtualinherited

Definition at line 249 of file TFormula.h.

IsOnHeap()

Bool_t TObject::IsOnHeap ( ) const

inlineinherited

Definition at line 160 of file TObject.h.

IsQuickLoad()

bool TTreeFormula::IsQuickLoad ( ) const

inline

Definition at line 207 of file TTreeFormula.h.

IsSortable()

Bool_t TNamed::IsSortable ( ) const

inlineoverridevirtualinherited

Reimplemented from TObject.

Reimplemented in TStructNodeProperty.

Definition at line 52 of file TNamed.h.

IsString() [1/2]

bool TTreeFormula::IsString ( ) const

virtual

Return TRUE if the formula is a string.

Definition at line 4881 of file TTreeFormula.cxx.

IsString() [2/2]

bool TTreeFormula::IsString ( Int_t oper ) const

overrideprotectedvirtual

Return true if the expression at the index 'oper' is to be treated as as string.

Reimplemented from ROOT::v5::TFormula.

Definition at line 4891 of file TTreeFormula.cxx.

IsZombie()

Bool_t TObject::IsZombie ( ) const

inlineinherited

Definition at line 161 of file TObject.h.

LoadBranches()

void TTreeFormula::LoadBranches ( )

protected

Make sure that all the branches have been loaded properly.

Definition at line 5528 of file TTreeFormula.cxx.

LoadCurrentDim()

bool TTreeFormula::LoadCurrentDim ( )

protected

Calculate the actual dimension for the current entry.

Definition at line 5556 of file TTreeFormula.cxx.

ls()

void TNamed::ls ( Option_t * option = "" ) const

overridevirtualinherited

List TNamed name and title.

Reimplemented from TObject.

Reimplemented in ROOT::Experimental::XRooFit::xRooBrowser, TNode, TROOT, TStreamerBase, TStreamerElement, TStreamerInfo, TStreamerSTL, TTask, TText, and TVirtualStreamerInfo.

Definition at line 112 of file TNamed.cxx.

MakePrimitive()

void TFormula::MakePrimitive ( const char * expr, Int_t pos )

protectedinherited

MakePrimitive find TFormulaPrimitive replacement for some operands.

Definition at line 3755 of file TFormula_v5.cxx.

MakeZombie()

void TObject::MakeZombie ( )

inlineprotectedinherited

Definition at line 55 of file TObject.h.

MayNotUse()

void TObject::MayNotUse ( const char * method ) const

inherited

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).

Definition at line 1160 of file TObject.cxx.

Notify()

bool TTreeFormula::Notify ( )

inlineoverridevirtual

This method must be overridden to handle object notification (the base implementation is no-op).

Different objects in ROOT use the Notify method for different purposes, in coordination with other objects that call this method at the appropriate time.

For example, TLeaf uses it to load class information; TBranchRef to load contents of referenced branches TBranchRef; most notably, based on Notify, TChain implements a callback mechanism to inform interested parties when it switches to a new sub-tree.

Reimplemented from TObject.

Definition at line 209 of file TTreeFormula.h.

Obsolete()

void TObject::Obsolete ( const char * method, const char * asOfVers, const char * removedFromVers ) const

inherited

Use this method to declare a method obsolete.

Specify as of which version the method is obsolete and as from which version it will be removed.

Definition at line 1169 of file TObject.cxx.

operator delete() [1/3]

void TObject::operator delete ( void * ptr, size_t size )

inherited

Operator delete for sized deallocation.

Definition at line 1234 of file TObject.cxx.

operator delete() [2/3]

void TObject::operator delete ( void * ptr )

inherited

Operator delete.

Definition at line 1212 of file TObject.cxx.

operator delete() [3/3]

void TObject::operator delete ( void * ptr, void * vp )

inherited

Only called by placement new when throwing an exception.

Definition at line 1266 of file TObject.cxx.

operator delete[]() [1/3]

void TObject::operator delete[] ( void * ptr, size_t size )

inherited

Operator delete [] for sized deallocation.

Definition at line 1245 of file TObject.cxx.

operator delete[]() [2/3]

void TObject::operator delete[] ( void * ptr )

inherited

Operator delete [].

Definition at line 1223 of file TObject.cxx.

operator delete[]() [3/3]

void TObject::operator delete[] ( void * ptr, void * vp )

inherited

Only called by placement new[] when throwing an exception.

Definition at line 1274 of file TObject.cxx.

operator new() [1/2]

void * TObject::operator new ( size_t sz )

inlineinherited

Definition at line 189 of file TObject.h.

operator new() [2/2]

void * TObject::operator new ( size_t sz, void * vp )

inlineinherited

Definition at line 191 of file TObject.h.

operator new[]() [1/2]

void * TObject::operator new[] ( size_t sz )

inlineinherited

Definition at line 190 of file TObject.h.

operator new[]() [2/2]

void * TObject::operator new[] ( size_t sz, void * vp )

inlineinherited

Definition at line 192 of file TObject.h.

operator=()

TTreeFormula & TTreeFormula::operator= ( const TTreeFormula & )

privatedelete

Optimize()

void TTreeFormula::Optimize ( )

overrideprotectedvirtual

MI include.

Optimize formula

• Minimize the number of operands
  1. several operands are glued together
  2. some primitive functions glued together - exemp. (x+y) => PlusXY(x,y)
  3. maximize number of standard calls minimizing number of jumps in Eval cases
  4. variables, parameters and constants are mapped - using fOperOfssets0 Eval procedure use direct acces to data (only one corresponding case statement in eval procedure)

     pdata[operand={Var,Par,Const}][offset]
     pdata[fOperOffsets0[i]][fOperOffset1[i+1]]

• The fastest evaluation function is chosen at the end
  1. fOptimal := pointer to the fastest function for given evaluation string

     switch(GetActionOptimized(0)){
       case kData : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive0; break;}
       case kUnary : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive1; break;}
       case kBinary : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive2; break;}
       case kThree : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive3; break;}
       case kFDM : {fOptimal= (TFormulaPrimitive::TFuncG)&TFormula::EvalPrimitive4; break;}
     }

  2. ex.
     • fOptimal = TFormula::EvalPrimitive0 - if it return only variable, constant or parameter
     • = TFormula::EvalPrimitive1 - if only one unary operation
     • = TFormula::EvalPrimitive2 - if only one binary operation

Reimplemented from ROOT::v5::TFormula.

Definition at line 5972 of file TTreeFormula.cxx.

Paint()

void TObject::Paint ( Option_t * option = "" )

virtualinherited

This method must be overridden if a class wants to paint itself.

The difference between Paint() and Draw() is that when a object draws itself it is added to the display list of the pad in which it is drawn (and automatically redrawn whenever the pad is redrawn). While paint just draws the object without adding it to the pad display list.

Reimplemented in ROOT::Experimental::RTreeMapPainter, ROOT::RGeoPainter, TAnnotation, TArrow, TASImage, TASPaletteEditor::LimitLine, TASPaletteEditor::PaintPalette, TAxis3D, TBits, TBox, TButton, TCanvas, TClassTree, TCollection, TColorWheel, TCrown, TDiamond, TDirectory, TEfficiency, TEllipse, TEveArrow, TEveCaloViz, TEveDigitSet, TEveGeoShape, TEveGeoTopNode, TEvePlot3D, TEvePointSet, TEveProjectionAxes, TEveScene, TEveShape, TEveStraightLineSet, TEveText, TEveTriangleSet, TExec, TF1, TF2, TF3, TFile, TFileDrawMap, TFrame, TGaxis, TGenerator, TGeoBoolNode, TGeoIntersection, TGeoNode, TGeoOverlap, TGeoPainter, TGeoPhysicalNode, TGeoShape, TGeoSubtraction, TGeoTrack, TGeoUnion, TGeoVGShape, TGeoVolume, TGL5DDataSet, TGLHistPainter, TGLParametricEquation, TGLTH3Composition, TGraph2D, TGraph2DPainter, TGraph, TGraphEdge, TGraphNode, TGraphPolargram, TGraphTime, TH1, THistPainter, THStack, TLatex, TLegend, TLine, TMacro, TMarker3DBox, TMarker, TMathText, TMultiGraph, TNode, TNodeDiv, TPad, TPaletteAxis, TParallelCoord, TParallelCoordRange, TParallelCoordVar, TParticle, TPave, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPie, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TPrimary, TRatioPlot, TScatter2D, TScatter, TShape, TSpectrum2Painter, TSpider, TSpline, TSQLFile, TStyle, TText, TTreePerfStats, TVirtualGeoPainter, TVirtualGeoTrack, TVirtualHistPainter, TVirtualPad, TWbox, and TXMLFile.

Definition at line 631 of file TObject.cxx.

ParseWithLeaf()

Int_t TTreeFormula::ParseWithLeaf ( TLeaf * leaf, const char * subExpression, bool final, UInt_t paran_level, TObjArray & castqueue, bool useLeafCollectionObject, const char * fullExpression )

protected

Decompose 'expression' as pointing to something inside the leaf Returns:

• -2 Error: some information is missing (message already printed)
• -1 Error: Syntax is incorrect (message already printed)
• 0
• >0 the value returns is the action code.

Definition at line 784 of file TTreeFormula.cxx.

Pop()

void TObject::Pop ( )

virtualinherited

Pop on object drawn in a pad to the top of the display list.

I.e. it will be drawn last and on top of all other primitives.

Reimplemented in TFrame, TPad, and TVirtualPad.

Definition at line 640 of file TObject.cxx.

PreCompile()

Int_t TFormula::PreCompile ( )

protectedinherited

Pre compile function.

Definition at line 4490 of file TFormula_v5.cxx.

Print()

void TFormula::Print ( Option_t * option = "" ) const

overridevirtualinherited

Dump this formula with its attributes.

Reimplemented from TObject.

Definition at line 3287 of file TFormula_v5.cxx.

PrintValue() [1/2]

char * TTreeFormula::PrintValue ( Int_t mode, Int_t instance, const char * decform = "9.9" ) const

virtual

Return value of variable as a string.

• mode = -2 : Print line with ***
• mode = -1 : Print column names

• mode = 0 : Print column values

  decform contains the requested format (with the same convention as printf).

Definition at line 4995 of file TTreeFormula.cxx.

PrintValue() [2/2]

char * TTreeFormula::PrintValue ( Int_t mode = 0 ) const

virtual

Return value of variable as a string.

• mode = -2 : Print line with ***
• mode = -1 : Print column names
• mode = 0 : Print column values

Definition at line 4981 of file TTreeFormula.cxx.

ProcessLinear()

void TFormula::ProcessLinear ( TString & replaceformula )

virtualinherited

If the formula is for linear fitting, change the title to normal and fill the LinearParts array.

Definition at line 3315 of file TFormula_v5.cxx.

Read()

Int_t TObject::Read ( const char * name )

virtualinherited

Read contents of object with specified name from the current directory.

First the key with the given name is searched in the current directory, next the key buffer is deserialized into the object. The object must have been created before via the default constructor. See TObject::Write().

Reimplemented in TBuffer, TKey, TKeySQL, and TKeyXML.

Definition at line 673 of file TObject.cxx.

RecursiveRemove()

void TObject::RecursiveRemove ( TObject * obj )

virtualinherited

Recursively remove this object from a list.

Typically implemented by classes that can contain multiple references to a same object.

Reimplemented in RooAbsCollection, RooAbsData, RooLinkedList, RooMCStudy, ROOT::Internal::TCheckHashRecursiveRemoveConsistency, ROOT::RBrowserDataCleanup, RooWorkspace, TBrowser, TChain, TCling, TCollection, TDialogCanvas, TDirectory, TEfficiency, TFileMerger, TFitEditor, TFolder, TFriendElement, TGedEditor, TGeometry, TGFileBrowser, TGraph2D, TGraph, TH1, TH1Editor, TH2Editor, THashList, THistPainter, THStack, TInspectCanvas, TLegend, TList, TListOfDataMembers, TListOfEnums, TListOfEnumsWithLock, TListOfFunctions, TListOfFunctionTemplates, TMultiGraph, TNode, TObjArray, TObjectRefSpy, TObjectSpy, TPad, TProcessID, TROOT, TRootBrowser, TRootBrowserHistory, TRootBrowserLite, TRootContextMenu, TTree, TTreePlayer, TViewPubDataMembers, TViewPubFunctions, and TVirtualPad.

Definition at line 684 of file TObject.cxx.

RegisterDimensions() [1/5]

Int_t TTreeFormula::RegisterDimensions ( const char * size, Int_t code )

protected

This method is used internally to decode the dimensions of the variables.

Definition at line 419 of file TTreeFormula.cxx.

RegisterDimensions() [2/5]

Int_t TTreeFormula::RegisterDimensions ( Int_t code, Int_t size, TFormLeafInfoMultiVarDim * multidim = nullptr )

protected

This method stores the dimension information for later usage.

Definition at line 456 of file TTreeFormula.cxx.

RegisterDimensions() [3/5]

Int_t TTreeFormula::RegisterDimensions ( Int_t code, TBranchElement * branch )

protected

This method is used internally to decode the dimensions of the variables.

Definition at line 572 of file TTreeFormula.cxx.

RegisterDimensions() [4/5]

Int_t TTreeFormula::RegisterDimensions ( Int_t code, TFormLeafInfo * info, TFormLeafInfo * maininfo, bool useCollectionObject )

protected

This method is used internally to decode the dimensions of the variables.

Definition at line 467 of file TTreeFormula.cxx.

RegisterDimensions() [5/5]

Int_t TTreeFormula::RegisterDimensions ( Int_t code, TLeaf * leaf )

protected

This method is used internally to decode the dimensions of the variables.

Definition at line 600 of file TTreeFormula.cxx.

ResetBit()

void TObject::ResetBit ( UInt_t f )

inlineinherited

Definition at line 203 of file TObject.h.

ResetDimensions()

void TTreeFormula::ResetDimensions ( )

protected

Populate the TTreeFormulaManager with the dimension information.

Definition at line 5346 of file TTreeFormula.cxx.

ResetLoading()

void TTreeFormula::ResetLoading ( )

virtual

Tell the formula that we are going to request a new entry.

Definition at line 5140 of file TTreeFormula.cxx.

SaveAs()

void TObject::SaveAs ( const char * filename = "", Option_t * option = "" ) const

virtualinherited

Save this object in the file specified by filename.

• if "filename" contains ".root" the object is saved in filename as root binary file.
• if "filename" contains ".xml" the object is saved in filename as a xml ascii file.
• if "filename" contains ".cc" the object is saved in filename as C code independent from ROOT. The code is generated via SavePrimitive(). Specific code should be implemented in each object to handle this option. Like in TF1::SavePrimitive().

• otherwise the object is written to filename as a CINT/C++ script. The C++ code to rebuild this object is generated via SavePrimitive(). The "option" parameter is passed to SavePrimitive. By default it is an empty string. It can be used to specify the Draw option in the code generated by SavePrimitive.

  The function is available via the object context menu.

Reimplemented in ROOT::Experimental::XRooFit::xRooNode, TClassTree, TFolder, TGeoVolume, TGObject, TGraph, TH1, TPad, TPaveClass, TSpline3, TSpline5, TSpline, TTreePerfStats, and TVirtualPad.

Definition at line 708 of file TObject.cxx.

SavePrimitive()

void TObject::SavePrimitive ( std::ostream & out, Option_t * option = "" )

virtualinherited

Save a primitive as a C++ statement(s) on output stream "out".

Reimplemented in TAnnotation, TArc, TArrow, TASImage, TAxis3D, TBox, TButton, TCanvas, TChain, TCrown, TCurlyArc, TCurlyLine, TCutG, TDiamond, TEfficiency, TEllipse, TExec, TF12, TF1, TF2, TF3, TFrame, TGaxis, TGButton, TGButtonGroup, TGCanvas, TGCheckButton, TGColorSelect, TGColumnLayout, TGComboBox, TGCompositeFrame, TGContainer, TGDockableFrame, TGDoubleHSlider, TGDoubleVSlider, TGedMarkerSelect, TGedPatternSelect, TGeoArb8, TGeoBBox, TGeoBoolNode, TGeoCombiTrans, TGeoCompositeShape, TGeoCone, TGeoConeSeg, TGeoCtub, TGeoDecayChannel, TGeoElementRN, TGeoEltu, TGeoGtra, TGeoHalfSpace, TGeoHMatrix, TGeoHype, TGeoIdentity, TGeoIntersection, TGeoMaterial, TGeoMedium, TGeoMixture, TGeoPara, TGeoParaboloid, TGeoPatternCylPhi, TGeoPatternCylR, TGeoPatternParaX, TGeoPatternParaY, TGeoPatternParaZ, TGeoPatternSphPhi, TGeoPatternSphR, TGeoPatternSphTheta, TGeoPatternTrapZ, TGeoPatternX, TGeoPatternY, TGeoPatternZ, TGeoPcon, TGeoPgon, TGeoRotation, TGeoScaledShape, TGeoShapeAssembly, TGeoSphere, TGeoSubtraction, TGeoTessellated, TGeoTorus, TGeoTranslation, TGeoTrap, TGeoTrd1, TGeoTrd2, TGeoTube, TGeoTubeSeg, TGeoUnion, TGeoVolume, TGeoXtru, TGFileContainer, TGFont, TGFrame, TGFSComboBox, TGGC, TGGroupFrame, TGHButtonGroup, TGHorizontal3DLine, TGHorizontalFrame, TGHorizontalLayout, TGHProgressBar, TGHScrollBar, TGHSlider, TGHSplitter, TGHtml, TGIcon, TGLabel, TGLayoutHints, TGLineStyleComboBox, TGLineWidthComboBox, TGListBox, TGListDetailsLayout, TGListLayout, TGListTree, TGListView, TGLVContainer, TGMainFrame, TGMatrixLayout, TGMdiFrame, TGMdiMainFrame, TGMdiMenuBar, TGMenuBar, TGMenuTitle, TGNumberEntry, TGNumberEntryField, TGPictureButton, TGPopupMenu, TGProgressBar, TGRadioButton, TGraph2D, TGraph2DAsymmErrors, TGraph2DErrors, TGraph, TGraphAsymmErrors, TGraphBentErrors, TGraphEdge, TGraphErrors, TGraphMultiErrors, TGraphNode, TGraphPolar, TGraphPolargram, TGraphStruct, TGroupButton, TGRowLayout, TGShapedFrame, TGShutter, TGShutterItem, TGSplitFrame, TGStatusBar, TGTab, TGTabLayout, TGTableLayout, TGTableLayoutHints, TGTextButton, TGTextEdit, TGTextEntry, TGTextLBEntry, TGTextView, TGTileLayout, TGToolBar, TGTransientFrame, TGTripleHSlider, TGTripleVSlider, TGVButtonGroup, TGVertical3DLine, TGVerticalFrame, TGVerticalLayout, TGVFileSplitter, TGVProgressBar, TGVScrollBar, TGVSlider, TGVSplitter, TGXYLayout, TGXYLayoutHints, TH1, TH2Poly, THelix, THStack, TLatex, TLegend, TLine, TMacro, TMarker3DBox, TMarker, TMathText, TMultiGraph, TPad, TPaletteAxis, TParallelCoord, TParallelCoordVar, TPave, TPaveClass, TPaveLabel, TPaveStats, TPavesText, TPaveText, TPie, TPieSlice, TPolyLine3D, TPolyLine, TPolyMarker3D, TPolyMarker, TProfile2D, TProfile3D, TProfile, TRootContainer, TRootEmbeddedCanvas, TScatter2D, TScatter, TSlider, TSliderBox, TSpline3, TSpline5, TStyle, TText, TTreePerfStats, and TWbox.

Definition at line 858 of file TObject.cxx.

SavePrimitiveConstructor()

void TObject::SavePrimitiveConstructor ( std::ostream & out, TClass * cl, const char * variable_name, const char * constructor_agrs = "", Bool_t empty_line = kTRUE )

staticprotectedinherited

Save object constructor in the output stream "out".

Can be used as first statement when implementing SavePrimitive() method for the object

Definition at line 777 of file TObject.cxx.

SavePrimitiveDraw()

void TObject::SavePrimitiveDraw ( std::ostream & out, const char * variable_name, Option_t * option = nullptr )

staticprotectedinherited

Save invocation of primitive Draw() method Skipped if option contains "nodraw" string.

Definition at line 845 of file TObject.cxx.

SavePrimitiveNameTitle()

void TNamed::SavePrimitiveNameTitle ( std::ostream & out, const char * variable_name )

protectedinherited

Save object name and title into the output stream "out".

Definition at line 135 of file TNamed.cxx.

SavePrimitiveVector()

TString TObject::SavePrimitiveVector ( std::ostream & out, const char * prefix, Int_t len, Double_t * arr, Int_t flag = 0 )

staticprotectedinherited

Save array in the output stream "out" as vector.

Create unique variable name based on prefix value Returns name of vector which can be used in constructor or in other places of C++ code If flag === kTRUE, just add empty line If flag === 111, check if array is empty and return nullptr or <vectorname>.data()

Definition at line 796 of file TObject.cxx.

SetAction()

void ROOT::v5::TFormula::SetAction ( Int_t code, Int_t value, Int_t param = 0 )

inlineprotectedinherited

Definition at line 108 of file TFormula.h.

SetActionOptimized()

void ROOT::v5::TFormula::SetActionOptimized ( Int_t code, Int_t value, Int_t param = 0 )

inlineprotectedinherited

Definition at line 116 of file TFormula.h.

SetAxis()

void TTreeFormula::SetAxis ( TAxis * axis = nullptr )

virtual

Set the axis (in particular get the type).

Definition at line 5178 of file TTreeFormula.cxx.

SetBit() [1/2]

void TObject::SetBit ( UInt_t f )

inlineinherited

Definition at line 202 of file TObject.h.

SetBit() [2/2]

void TObject::SetBit ( UInt_t f, Bool_t set )

inherited

Set or unset the user status bits as specified in f.

Definition at line 888 of file TObject.cxx.

SetDrawOption()

void TObject::SetDrawOption ( Option_t * option = "" )

virtualinherited

Set drawing option for object.

This option only affects the drawing style and is stored in the option field of the TObjOptLink supporting a TPad's primitive list (TList). Note that it does not make sense to call object.SetDrawOption(option) before having called object.Draw().

Reimplemented in RooPlot, TAxis, TBrowser, TGedFrame, TGFrame, TPad, TPaveStats, TRootBrowserLite, TSystemDirectory, and TSystemFile.

Definition at line 871 of file TObject.cxx.

SetDtorOnly()

void TObject::SetDtorOnly ( void * obj )

staticinherited

Set destructor only flag.

Definition at line 1204 of file TObject.cxx.

SetMaxima()

void TFormula::SetMaxima ( Int_t maxop = 1000, Int_t maxpar = 1000, Int_t maxconst = 1000 )

staticinherited

static function to set the maximum value of 3 parameters

• maxop : maximum number of operations
• maxpar : maximum number of parameters
• maxconst : maximum number of constants

None of these parameters cannot be less than 10 (default is 1000) call this function to increase one or all maxima when processing very complex formula, eg TFormula::SetMaxima(100000,1000,1000000); If you process many functions with a small number of operations/parameters you may gain some memory and performance by decreasing these values.

Definition at line 4536 of file TFormula_v5.cxx.

SetName()

void TNamed::SetName ( const char * name )

virtualinherited

Set the name of the TNamed.

WARNING: if the object is a member of a THashTable or THashList container the container must be Rehash()'ed after SetName(). For example the list of objects in the current directory is a THashList.

Reimplemented in RooAbsArg, RooAbsData, RooDataHist, RooDataSet, RooFitResult, RooPlot, ROOT::Experimental::XRooFit::xRooNode, TChain, TColor, TDirectory, TEfficiency, TEventList, TEveScene, TFormula, TGraph2D, TGraph, TH1, TNode, TRotMatrix, TShape, TSystemDirectory, TSystemFile, and TTree.

Definition at line 149 of file TNamed.cxx.

SetNameTitle()

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

virtualinherited

Set all the TNamed parameters (name and title).

WARNING: if the name is changed and the object is a member of a THashTable or THashList container the container must be Rehash()'ed after SetName(). For example the list of objects in the current directory is a THashList.

Reimplemented in RooAbsArg, RooAbsData, RooDataHist, RooDataSet, RooFitResult, RooPlot, TContextMenu, TGraph2D, TGraph, TH1, and TNode.

Definition at line 163 of file TNamed.cxx.

SetNumber()

virtual void ROOT::v5::TFormula::SetNumber ( Int_t number )

inlinevirtualinherited

Definition at line 252 of file TFormula.h.

SetObjectStat()

void TObject::SetObjectStat ( Bool_t stat )

staticinherited

Turn on/off tracking of objects in the TObjectTable.

Definition at line 1188 of file TObject.cxx.

SetParameter() [1/2]

void TFormula::SetParameter ( const char * name, Double_t parvalue )

virtualinherited

Initialize parameter number ipar.

Definition at line 3384 of file TFormula_v5.cxx.

SetParameter() [2/2]

void TFormula::SetParameter ( Int_t ipar, Double_t parvalue )

virtualinherited

Initialize parameter number ipar.

Definition at line 3395 of file TFormula_v5.cxx.

SetParameters() [1/2]

void TFormula::SetParameters ( const Double_t * params )

virtualinherited

Initialize array of all parameters.

See also the next function with the same name.

Definition at line 3406 of file TFormula_v5.cxx.

SetParameters() [2/2]

void TFormula::SetParameters ( Double_t p0, Double_t p1, Double_t p2 = 0, Double_t p3 = 0, Double_t p4 = 0, Double_t p5 = 0, Double_t p6 = 0, Double_t p7 = 0, Double_t p8 = 0, Double_t p9 = 0, Double_t p10 = 0 )

virtualinherited

Initialize up to 11 parameters All arguments except THE FIRST TWO are optional In case of a function with only one parameter, call this function with p1=0.

Minimum two arguments are required to differentiate this function from the SetParameters(cont Double_t *params)

Definition at line 3421 of file TFormula_v5.cxx.

SetParName()

void TFormula::SetParName ( Int_t ipar, const char * name )

virtualinherited

Set name of parameter number ipar.

Definition at line 3441 of file TFormula_v5.cxx.

SetParNames()

void TFormula::SetParNames ( const char * name0 = "p0", const char * name1 = "p1", const char * name2 = "p2", const char * name3 = "p3", const char * name4 = "p4", const char * name5 = "p5", const char * name6 = "p6", const char * name7 = "p7", const char * name8 = "p8", const char * name9 = "p9", const char * name10 = "p10" )

virtualinherited

Set up to 11 parameter names.

Definition at line 3450 of file TFormula_v5.cxx.

SetQuickLoad()

void TTreeFormula::SetQuickLoad ( bool quick )

inline

Definition at line 213 of file TTreeFormula.h.

SetTitle()

void TNamed::SetTitle ( const char * title = "" )

virtualinherited

Set the title of the TNamed.

Reimplemented in Axis2, RooPlot, ROOT::Experimental::XRooFit::xRooNode, ROOT::TSchemaRule::TSources, TASImage, TEfficiency, TF1, TGraph2D, TGraph, TH1, THnBase, TParallelCoordVar, TSystemDirectory, and TSystemFile.

Definition at line 173 of file TNamed.cxx.

SetTree()

virtual void TTreeFormula::SetTree ( TTree * tree )

inlinevirtual

Definition at line 214 of file TTreeFormula.h.

SetUniqueID()

void TObject::SetUniqueID ( UInt_t uid )

virtualinherited

Set the unique object id.

Definition at line 899 of file TObject.cxx.

Sizeof()

Int_t TNamed::Sizeof ( ) const

virtualinherited

Return size of the TNamed part of the TObject.

Reimplemented in TDirectory, TDirectoryFile, TFile, TKey, TSQLFile, and TXMLFile.

Definition at line 182 of file TNamed.cxx.

Streamer() [1/3]

void TFormula::Streamer ( TBuffer & b, const TClass * onfile_class )

inherited

Stream a class object.

Definition at line 3469 of file TFormula_v5.cxx.

Streamer() [2/3]

void TFormula::Streamer ( TBuffer & b, Int_t version, UInt_t start, UInt_t count, const TClass * onfile_class = nullptr )

inherited

specialized streamer function being able to read old TF1 versions as TF1Old in memory

Definition at line 3507 of file TFormula_v5.cxx.

Streamer() [3/3]

void TTreeFormula::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TTreeFormula.

Reimplemented from ROOT::v5::TFormula.

Definition at line 5203 of file TTreeFormula.cxx.

StreamerNVirtual()

void TTreeFormula::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 219 of file TTreeFormula.h.

StringToNumber()

bool TTreeFormula::StringToNumber ( Int_t oper )

overrideprotectedvirtual

Try to 'demote' a string into an array bytes.

If this is not possible, return false.

Reimplemented from ROOT::v5::TFormula.

Definition at line 5237 of file TTreeFormula.cxx.

SwitchToFormLeafInfo()

bool TTreeFormula::SwitchToFormLeafInfo ( Int_t code )

protectedvirtual

Convert the underlying lookup method from the direct technique (dereferencing the address held by the branch) to the method using TFormLeafInfo.

This is in particular useful in the case where we need to append an additional TFormLeafInfo (for example to call a method). Return false if the switch was unsuccessful (basically in the case of an old style split tree).

Definition at line 5896 of file TTreeFormula.cxx.

SysError()

void TObject::SysError ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue system error message.

Use "location" to specify the method where the system error occurred. Accepts standard printf formatting arguments.

Definition at line 1112 of file TObject.cxx.

TestBit()

Bool_t TObject::TestBit ( UInt_t f ) const

inlineinherited

Definition at line 204 of file TObject.h.

TestBits()

Int_t TObject::TestBits ( UInt_t f ) const

inlineinherited

Definition at line 205 of file TObject.h.

Update()

virtual void ROOT::v5::TFormula::Update ( )

inlinevirtualinherited

Definition at line 264 of file TFormula.h.

UpdateFormulaLeaves()

void TTreeFormula::UpdateFormulaLeaves ( )

virtual

This function is called TTreePlayer::UpdateFormulaLeaves, itself called by TChain::LoadTree when a new Tree is loaded.

Because Trees in a TChain may have a different list of leaves, one must update the leaves numbers in the TTreeFormula used by the TreePlayer.

A safer alternative would be to recompile the whole thing .... However currently compile HAS TO be called from the constructor!

Definition at line 5266 of file TTreeFormula.cxx.

UseCurrentStyle()

void TObject::UseCurrentStyle ( )

virtualinherited

Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

Reimplemented in TAxis3D, TCanvas, TFrame, TGraph, TH1, TPad, TPaveStats, TPaveText, and TTree.

Definition at line 909 of file TObject.cxx.

Warning()

void TObject::Warning ( const char * location, const char * fmt, ... ) const

virtualinherited

Issue warning message.

Use "location" to specify the method where the warning occurred. Accepts standard printf formatting arguments.

Definition at line 1084 of file TObject.cxx.

Write() [1/2]

Int_t TObject::Write ( const char * name = nullptr, Int_t option = 0, Int_t bufsize = 0 )

virtualinherited

Write this object to the current directory.

For more see the const version of this method.

Reimplemented in ROOT::TBufferMergerFile, TBuffer, TCollection, TDirectory, TDirectoryFile, TFile, TMap, TParallelMergingFile, TSQLFile, TTree, and TXMLFile.

Definition at line 989 of file TObject.cxx.

Write() [2/2]

Int_t TObject::Write ( const char * name = nullptr, Int_t option = 0, Int_t bufsize = 0 ) const

virtualinherited

Write this object to the current directory.

The data structure corresponding to this object is serialized. The corresponding buffer is written to the current directory with an associated key with name "name".

Writing an object to a file involves the following steps:

• Creation of a support TKey object in the current directory. The TKey object creates a TBuffer object.
• The TBuffer object is filled via the class::Streamer function.
• If the file is compressed (default) a second buffer is created to hold the compressed buffer.
• Reservation of the corresponding space in the file by looking in the TFree list of free blocks of the file.
• The buffer is written to the file.

Bufsize can be given to force a given buffer size to write this object. By default, the buffersize will be taken from the average buffer size of all objects written to the current file so far.

If a name is specified, it will be the name of the key. If name is not given, the name of the key will be the name as returned by GetName().

The option can be a combination of: kSingleKey, kOverwrite or kWriteDelete Using the kOverwrite option a previous key with the same name is overwritten. The previous key is deleted before writing the new object. Using the kWriteDelete option a previous key with the same name is deleted only after the new object has been written. This option is safer than kOverwrite but it is slower. NOTE: Neither kOverwrite nor kWriteDelete reduces the size of a TFile– the space is simply freed up to be overwritten; in the case of a TTree, it is more complicated. If one opens a TTree, appends some entries, then writes it out, the behaviour is effectively the same. If, however, one creates a new TTree and writes it out in this way, only the metadata is replaced, effectively making the old data invisible without deleting it. TTree::Delete() can be used to mark all disk space occupied by a TTree as free before overwriting its metadata this way. The kSingleKey option is only used by TCollection::Write() to write a container with a single key instead of each object in the container with its own key.

An object is read from the file into memory via TKey::Read() or via TObject::Read().

The function returns the total number of bytes written to the file. It returns 0 if the object cannot be written.

Reimplemented in TBuffer, TCollection, TDirectory, TDirectoryFile, TFile, TMap, TParallelMergingFile, TSQLFile, TTree, and TXMLFile.

Definition at line 964 of file TObject.cxx.

Friends And Related Symbol Documentation

TTreeFormulaManager

friend class TTreeFormulaManager

friend

Definition at line 60 of file TTreeFormula.h.

Member Data Documentation

fAliases

TObjArray TTreeFormula::fAliases

protected

! List of TTreeFormula for each alias used.

Definition at line 107 of file TTreeFormula.h.

fAliasesUsed

std::vector<std::string> TTreeFormula::fAliasesUsed

protected

! List of aliases used during the parsing of the expression.

Definition at line 128 of file TTreeFormula.h.

fAlreadyFound

TBits ROOT::v5::TFormula::fAlreadyFound

protectedinherited

! cache for information

Definition at line 88 of file TFormula.h.

fAxis

TAxis* TTreeFormula::fAxis

protected

! pointer to histogram axis if this is a string

Definition at line 122 of file TTreeFormula.h.

fBits

UInt_t TObject::fBits

privateinherited

bit field status word

Definition at line 47 of file TObject.h.

fBranches

TObjArray TTreeFormula::fBranches

protected

! List of branches to read. Similar to fLeaves but duplicates are zeroed out.

Definition at line 109 of file TTreeFormula.h.

fCodes

Int_t TTreeFormula::fCodes[kMAXCODES]

protected

List of leaf numbers referenced in formula.

Definition at line 96 of file TTreeFormula.h.

fConst

Double_t* ROOT::v5::TFormula::fConst

protectedinherited

Definition at line 82 of file TFormula.h.

fConstLD

LongDouble_t* TTreeFormula::fConstLD

protected

! local version of fConsts able to store bigger numbers

Definition at line 130 of file TTreeFormula.h.

fCumulSizes

Int_t TTreeFormula::fCumulSizes[kMAXCODES][kMAXFORMDIM]

protected

Accumulated sizes of lower dimensions for each leaf after variable dimensions has been calculated.

Definition at line 118 of file TTreeFormula.h.

fDataMembers

TObjArray TTreeFormula::fDataMembers

protected

! List of leaf data members

Definition at line 104 of file TTreeFormula.h.

fDidBooleanOptimization

bool TTreeFormula::fDidBooleanOptimization

protected

! True if we executed one boolean optimization since the last time instance number 0 was evaluated

Definition at line 123 of file TTreeFormula.h.

fDimensionSetup

TList* TTreeFormula::fDimensionSetup

protected

! list of dimension setups, for delayed creation of the dimension information.

Definition at line 127 of file TTreeFormula.h.

fExpr

TString* ROOT::v5::TFormula::fExpr

protectedinherited

Definition at line 78 of file TFormula.h.

fExprOptimized

TString* ROOT::v5::TFormula::fExprOptimized

protectedinherited

![fNOperOptimized] List of expressions

Definition at line 92 of file TFormula.h.

fExternalCuts

TObjArray TTreeFormula::fExternalCuts

protected

! List of TCutG and TEntryList used in the formula

Definition at line 106 of file TTreeFormula.h.

fFixedSizes

Int_t TTreeFormula::fFixedSizes[kMAXCODES][kMAXFORMDIM]

protected

Physical sizes of lower dimensions for each leaf.

Definition at line 114 of file TTreeFormula.h.

fFunctions

TObjArray ROOT::v5::TFormula::fFunctions

protectedinherited

Definition at line 85 of file TFormula.h.

fgDtorOnly

Longptr_t TObject::fgDtorOnly = 0

staticprivateinherited

object for which to call dtor only (i.e. no delete)

Definition at line 49 of file TObject.h.

fgObjectStat

Bool_t TObject::fgObjectStat = kTRUE

staticprivateinherited

if true keep track of objects in TObjectTable

Definition at line 50 of file TObject.h.

fHasCast

bool TTreeFormula::fHasCast

protected

Record whether the formula contain a cast operation or not.

Definition at line 99 of file TTreeFormula.h.

fHasMultipleVarDim

UChar_t TTreeFormula::fHasMultipleVarDim[kMAXCODES]

protected

True if the corresponding variable is an array with more than one variable dimension.

Definition at line 115 of file TTreeFormula.h.

fIndexes

Int_t TTreeFormula::fIndexes[kMAXCODES][kMAXFORMDIM]

protected

Index of array selected by user for each leaf.

Definition at line 119 of file TTreeFormula.h.

fLeafNames

TObjArray TTreeFormula::fLeafNames

protected

List of TNamed describing leaves.

Definition at line 108 of file TTreeFormula.h.

fLeaves

TObjArray TTreeFormula::fLeaves

protected

! List of leaf used in this formula.

Definition at line 103 of file TTreeFormula.h.

fLinearParts

TObjArray ROOT::v5::TFormula::fLinearParts

protectedinherited

Definition at line 86 of file TFormula.h.

fLookupType

Int_t* TTreeFormula::fLookupType

protected

[fNindex] Array indicating how each leaf should be looked-up

Definition at line 102 of file TTreeFormula.h.

fManager

TTreeFormulaManager* TTreeFormula::fManager

protected

! The dimension coordinator.

Definition at line 124 of file TTreeFormula.h.

fMethods

TObjArray TTreeFormula::fMethods

protected

! List of leaf method calls

Definition at line 105 of file TTreeFormula.h.

fMultiplicity

Int_t TTreeFormula::fMultiplicity

protected

Indicator of the variability of the formula.

Definition at line 100 of file TTreeFormula.h.

fName

TString TNamed::fName

protectedinherited

Definition at line 32 of file TNamed.h.

fNames

TString* ROOT::v5::TFormula::fNames

protectedinherited

Definition at line 84 of file TFormula.h.

fNcodes

Int_t TTreeFormula::fNcodes

protected

Number of leaves referenced in formula.

Definition at line 98 of file TTreeFormula.h.

fNconst

Int_t ROOT::v5::TFormula::fNconst

protectedinherited

Definition at line 74 of file TFormula.h.

fNdata

Int_t TTreeFormula::fNdata[kMAXCODES]

protected

! This caches the physical number of element in the leaf or data member.

Definition at line 97 of file TTreeFormula.h.

fNdim

Int_t ROOT::v5::TFormula::fNdim

protectedinherited

Definition at line 71 of file TFormula.h.

fNdimensions

Int_t TTreeFormula::fNdimensions[kMAXCODES]

protected

Number of array dimensions in each leaf.

Definition at line 113 of file TTreeFormula.h.

fNeedLoading

bool TTreeFormula::fNeedLoading

protected

! If true, the current entry has not been loaded yet.

Definition at line 111 of file TTreeFormula.h.

fNindex

Int_t TTreeFormula::fNindex

protected

Size of fIndex.

Definition at line 101 of file TTreeFormula.h.

fNoper

Int_t ROOT::v5::TFormula::fNoper

protectedinherited

Definition at line 73 of file TFormula.h.

fNOperOptimized

Int_t ROOT::v5::TFormula::fNOperOptimized

protectedinherited

!Number of operators after optimization

Definition at line 91 of file TFormula.h.

fNpar

Int_t ROOT::v5::TFormula::fNpar

protectedinherited

Definition at line 72 of file TFormula.h.

fNstring

Int_t ROOT::v5::TFormula::fNstring

protectedinherited

Definition at line 77 of file TFormula.h.

fNumber

Int_t ROOT::v5::TFormula::fNumber

protectedinherited

Definition at line 75 of file TFormula.h.

fNval

Int_t ROOT::v5::TFormula::fNval

protectedinherited

Definition at line 76 of file TFormula.h.

fOper

Int_t* ROOT::v5::TFormula::fOper

privateinherited

Definition at line 80 of file TFormula.h.

fOperOffset

TOperOffset* ROOT::v5::TFormula::fOperOffset

protectedinherited

![fNOperOptimized] Offsets of operrands

Definition at line 94 of file TFormula.h.

fOperOptimized

Int_t* ROOT::v5::TFormula::fOperOptimized

protectedinherited

![fNOperOptimized] List of operators. (See documentation for changes made at version 7)

Definition at line 93 of file TFormula.h.

fOptimal

TFuncG ROOT::v5::TFormula::fOptimal

protectedinherited

!pointer to optimal function

Definition at line 96 of file TFormula.h.

fParams

Double_t* ROOT::v5::TFormula::fParams

protectedinherited

Definition at line 83 of file TFormula.h.

fPredefined

TFormulaPrimitive** ROOT::v5::TFormula::fPredefined

protectedinherited

![fNPar] predefined function

Definition at line 95 of file TFormula.h.

fQuickLoad

bool TTreeFormula::fQuickLoad

protected

! If true, branch GetEntry is only called when the entry number changes.

Definition at line 110 of file TTreeFormula.h.

fRealInstanceCache

RealInstanceCache TTreeFormula::fRealInstanceCache

protected

! Cache accelerating the GetRealInstance function

Definition at line 132 of file TTreeFormula.h.

fTitle

TString TNamed::fTitle

protectedinherited

Definition at line 33 of file TNamed.h.

fTree

TTree* TTreeFormula::fTree

protected

! Pointer to Tree

Definition at line 95 of file TTreeFormula.h.

fUniqueID

UInt_t TObject::fUniqueID

privateinherited

object unique identifier

Definition at line 46 of file TObject.h.

fVarIndexes

TTreeFormula* TTreeFormula::fVarIndexes[kMAXCODES][kMAXFORMDIM]

protected

Pointer to a variable index.

Definition at line 120 of file TTreeFormula.h.

---

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

• tree/treeplayer/inc/TTreeFormula.h
• tree/treeplayer/src/TTreeFormula.cxx