General purpose analysis class for TTree containing KVEvent objects.

Use this TSelector to analyse data in TTrees containing a branch with KVEvent-derived objects:

my_tree->Process("KVEventSelector", "[options]");

where "[options]" is the list of options in the form "BranchName=toto, ...".

The following options MUST be given:

BranchName: name of branch containing the events

The following are optional options:

EventsReadInterval:     print info on analysis every N events instead of default value
AuxFiles:               list of files containing "friend" TTrees to be made available during analysis. Separate filenames with '|'.
AuxDir:                 directory in which to find AuxFiles
AuxTreeName:            name of tree in AuxFiles containing KVEvent objects
AuxBranchName:          name of branch in AuxFiles containing KVEvent objects

When AuxFiles is used, the user can access the events in these files in her Analysis() method by doing the following:

GetFriendTreeEntry(entry_number);

KVEvent* friend_event = GetFriendEvent();

KVEventSelector::GetFriendTreeEntry

Int_t GetFriendTreeEntry(Long64_t entry, Int_t getall=0)

Definition: KVEventSelector.h:266

KVEventSelector::GetFriendEvent

KVEvent * GetFriendEvent() const

Definition: KVEventSelector.h:270

Any other options can be defined by the user and parsed in her analysis class with methods IsOptGiven() and GetOpt()

Usage

Global Variables

Global variables for the analysis should be declared in InitAnalysis() using method AddGV(). These variables are calculated automatically for each event before user's Analysis() method is called.

If the user needs to define new reference frames for the data which must exist before global variables are automatically calculated in the analysis loop, she can do so by overriding the method SetAnalysisFrame(), like so:

MyAnalysis::SetAnalysisFrame()
{
    static TVector3 cmvelocity(0,0,3.0);
    GetEvent()->SetFrame("CM", cmvelocity);
}

Note that the global variables are only calculated using particles which have their "OK" status set, for example because they correspond to the global particle selection criteria given to SetParticleConditions(). Any further particle selections applied to individual global variables will then select from among these "OK" particles.

If one or more global variables have event selection conditions defined (i.e. cuts on the values of the global variables) - see KVVarGlob::SetEventSelection() and KVGVList - then for each event which does not satisfy all conditions the Analysis() method will not be called.

Use with PROOF(lite)

In order to use a KVEventSelector with PROOF:

declare any histograms with method AddHisto(TH1*) e.g. in InitAnalysis() do:

void MySelector::InitAnalysis()
{
    AddHisto( new TH2F("toto", "tata", 100, 0, 0, 500, 0, 0) );
}

Histograms can also be declared 'on the fly' in the Analysis() method in the same way;

for TTrees, first call CreateTreeFile() with name of file for TTree(s) (by default, histograms and TTrees are written in different files - but see below), then declare all trees using method AddTree(TTree*) e.g. in InitAnalysis() do:

void MySelector::InitAnalysis()
{
    CreateTreeFile("MyTrees.root");
    TTree* aTree = new TTree("t1", "Some Tree");
    aTree->Branch(...) etc.
    AddTree(aTree);
}

if you want (not obligatory), you can use methods FillHisto() and FillTree() in your Analysis() method;
to save histograms to file in EndAnalysis(), call method SaveHistos() in EndAnalysis() with the name of the file to be created
the file declared with CreateTreeFile() will be automatically written to disk at the end of the analysis.

Histograms & TTrees in the same output file

If you want all results of your analysis to be written in a single file containing both histos and trees, call method SetJobOutputFileName() with the required filename in your InitAnalysis() method;

do not call SaveHistos() in EndAnalysis(), and make sure you call CreateTreeFile() without giving a name (the resulting intermediate file will have a default name allowing it to be found at the end of the analysis)

Generating & saving profiles, divided histograms, etc.

If, at the end of processing, you want to generate a histogram from one or more histograms filled in your analysis, for example generate a TProfile from a 2D histogram, or store the result of dividing one histogram by the other, you need to do the following:

do the processing in the EndRun() method, not in EndAnalysis() - by the time EndAnalysis() is called it is too late, the output file has been closed and written to disk
add the resulting histogram to the output list like so:

MyEventSelector::EndRun()
{
   TProfile* my_profile = ((TH2*)GetHisto("my_histo_2D"))->ProfileX("name_of_my_profile");
   GetOutputList()->Add(my_profile);
}

Examples: ExampleFilteredSimDataAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 153 of file KVEventSelector.h.

Public Member Functions
	KVEventSelector (TTree *=0)

virtual	~KVEventSelector ()

KVVarGlob *	AddGV (const Char_t class_name, const Char_t name)

void	AddGV (KVVarGlob *vg)

template<typename HistoType , typename... Args>
HistoType *	AddHisto (Args &&... args)

void	AddHisto (TH1 *histo)

TTree *	AddTree (const TString &name, const TString &title="", Int_t splitLevel=99, TDirectory *=gDirectory)
	Add TTree with given name and title to list of TTree to be filled by user's analysis. More...

void	AddTree (TTree *tree)

virtual Bool_t	Analysis ()

Bool_t	AtEndOfRun (void)

virtual void	Begin (TTree *tree)

virtual void	CheckEndOfRun ()
	Testing whether EndRun() should be called. More...

Bool_t	CreateTreeFile (const Char_t *filename="")

virtual void	EndAnalysis ()

virtual void	EndRun ()

void	FillHisto (const Char_t sname, const Char_t label, Double_t weight=1)
	Fill 1D histogram with named bins. More...

void	FillHisto (const Char_t *sname, Double_t one, Double_t two=1, Double_t three=1, Double_t four=1)

void	FillTree (const Char_t *sname="")

const Char_t *	GetBranchName () const

virtual Int_t	GetEntry (Long64_t entry, Int_t getall=0)

KVEvent *	GetEvent () const

Int_t	GetEventNumber () const

KVEvent *	GetFriendEvent () const

Int_t	GetFriendTreeEntry (Long64_t entry, Int_t getall=0)

KVVarGlob *	GetGV (const Char_t *name) const

KVGVList *	GetGVList (void)

const KVGVList *	GetGVList (void) const

TH1 *	GetHisto (const Char_t *name) const

const KVHashList *	GetHistoList () const
	return the list of created trees More...

virtual TString	GetOpt (const Char_t *option) const

virtual TList *	GetOutputList () const

TTree *	GetTree (const Char_t *name) const
	return the tree named tree_name More...

const KVHashList *	GetTreeList () const
	return the list of created trees More...

virtual void	Init (TTree *tree)

virtual void	InitAnalysis ()

void	InitFriendTree (TTree *tree, const TString &branchname)

virtual void	InitRun ()

virtual Bool_t	IsOptGiven (const Char_t *option)
	Returns kTRUE if the option 'opt' has been set. More...

virtual Bool_t	Notify ()

virtual void	ParseOptions ()

virtual Bool_t	Process (Long64_t entry)

virtual void	RecalculateGlobalVariables ()

virtual void	SaveHistos (const Char_t filename="", Option_t option="recreate", Bool_t onlyfilled=kFALSE)

virtual void	SetAdditionalBranchAddress ()

virtual void	SetAnalysisFrame ()

void	SetBranchName (const Char_t *n)

virtual void	SetCurrentRun (KVDBRun *)

void	SetEvent (KVEvent *e)

void	SetEventsReadInterval (Long64_t N)

virtual void	SetInputList (TList *input)

void	SetJobOutputFileName (const TString &filename)

virtual void	SetObject (TObject *obj)

virtual void	SetOpt (const Char_t option, const Char_t value)
	Set a value for an option. More...

void	SetParticleConditions (const KVParticleCondition &, const KVString &="")

void	SetParticleConditionsParticleClassName (const KVString &t)

void	SetTriggerConditionsForRun (int)

virtual void	SlaveBegin (TTree *tree)

virtual void	SlaveTerminate ()

virtual void	Terminate ()

virtual void	UnsetOpt (const Char_t *opt)
	Removes the option 'opt' from the internal lists, as if it had never been set. More...

virtual Int_t	Version () const

Public Member Functions inherited from TSelector
	TSelector ()

virtual	~TSelector ()

virtual void	Abort (const char *why, EAbort what=kAbortProcess)

virtual EAbort	GetAbort () const

virtual TList *	GetInputList () const

virtual const char *	GetOption () const

virtual Long64_t	GetStatus () const

virtual void	ImportOutput (TList *output)

virtual Bool_t	ProcessCut (Long64_t)

virtual void	ProcessFill (Long64_t)

virtual void	ResetAbort ()

virtual void	SetOption (const char *option)

virtual void	SetStatus (Long64_t status)

Public Member Functions inherited from TObject
	TObject ()

	TObject (const TObject &object)

virtual	~TObject ()

void	AbstractMethod (const char *method) const

virtual void	AppendPad (Option_t *option="")

virtual void	Browse (TBrowser *b)

ULong_t	CheckedHash ()

virtual const char *	ClassName () const

virtual void	Clear (Option_t *="")

virtual TObject *	Clone (const char *newname="") const

virtual Int_t	Compare (const TObject *obj) const

virtual void	Copy (TObject &object) const

virtual void	Delete (Option_t *option="")

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)

virtual void	Draw (Option_t *option="")

virtual void	DrawClass () const

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

virtual void	Dump () const

virtual void	Error (const char method, const char msgfmt,...) const

virtual void	Execute (const char method, const char params, Int_t *error=0)

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)

virtual void	Fatal (const char method, const char msgfmt,...) const

virtual TObject *	FindObject (const char *name) const

virtual TObject *	FindObject (const TObject *obj) const

virtual Option_t *	GetDrawOption () const

virtual const char *	GetIconName () const

virtual const char *	GetName () const

virtual char *	GetObjectInfo (Int_t px, Int_t py) const

virtual const char *	GetTitle () const

virtual UInt_t	GetUniqueID () const

virtual Bool_t	HandleTimer (TTimer *timer)

virtual ULong_t	Hash () const

Bool_t	HasInconsistentHash () const

virtual void	Info (const char method, const char msgfmt,...) const

virtual Bool_t	InheritsFrom (const char *classname) const

virtual Bool_t	InheritsFrom (const TClass *cl) const

virtual void	Inspect () const

void	InvertBit (UInt_t f)

virtual Bool_t	IsEqual (const TObject *obj) const

virtual Bool_t	IsFolder () const

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const

void	MayNotUse (const char *method) const

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

void	operator delete (void *ptr)

void	operator delete[] (void *ptr)

void *	operator new (size_t sz)

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

void *	operator new[] (size_t sz)

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

TObject &	operator= (const TObject &rhs)

virtual void	Paint (Option_t *option="")

virtual void	Pop ()

virtual void	Print (Option_t *option="") const

virtual Int_t	Read (const char *name)

virtual void	RecursiveRemove (TObject *obj)

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const

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

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)

virtual void	SetDrawOption (Option_t *option="")

virtual void	SetUniqueID (UInt_t uid)

virtual void	SysError (const char method, const char msgfmt,...) const

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()

virtual void	Warning (const char method, const char msgfmt,...) const

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const

Public Attributes
TProofOutputFile *	mergeFile
	for merging with PROOF More...

TFile *	writeFile

Public Attributes inherited from TSelector
	kAbortFile

	kAbortProcess

	kContinue

Public Attributes inherited from TObject
	kBitMask

	kCanDelete

	kCannotPick

	kHasUUID

	kInconsistent

	kInvalidObject

	kIsOnHeap

	kIsReferenced

	kMustCleanup

	kNoContextMenu

	kNotDeleted

	kObjInCanvas

	kOverwrite

	kSingleKey

	kWriteDelete

	kZombie

Protected Member Functions
void	add_histo (TH1 *histo)

void	add_tree (TTree *tree)

void	FillTH1 (TH1 *h1, Double_t one, Double_t two)

void	FillTH2 (TH2 *h2, Double_t one, Double_t two, Double_t three)

void	FillTH3 (TH3 *h3, Double_t one, Double_t two, Double_t three, Double_t four)

void	FillTProfile (TProfile *h1, Double_t one, Double_t two, Double_t three)

void	FillTProfile2D (TProfile2D *h2, Double_t one, Double_t two, Double_t three, Double_t four)

void	SetCombinedOutputFile (const TString &filename)

void	SetUpAuxEventChain ()

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const

void	MakeZombie ()

Protected Attributes
KVEvent *	AuxEvent
	[optional] events in fAuxChain More...

TBranch *	b_Event
	List of branches. More...

KVEvent *	Event
	Declaration of leaf types. More...

TTree *	fAuxChain
	[optional] pointer to another TTree or TChain which may be used during analysis More...

KVString	fBranchName
	name of branch which contains events to analyse More...

TTree *	fChain
	pointer to the analyzed TTree or TChain More...

KVString	fCombinedOutputFile
	optional name for single results file with trees and histos More...

Bool_t	fDisableCreateTreeFile
	used with PROOF More...

Long64_t	fEventsRead
	number of events read More...

Long64_t	fEventsReadInterval
	interval at which to print number of events read More...

Bool_t	fFirstEvent
	set to kFALSE after first event is read More...

Bool_t	fNotifyCalled
	avoid multiple calls to Notify/InitRun More...

KVNameValueList	fOptionList
	parsed list of options given to TTree::Process More...

KVParticleCondition	fPartCond
	(optional) conditions for selecting particles More...

KVString	fPartName
	(optional) classname for upcasting in KVParticleCondition::Optimize More...

Long64_t	fTreeEntry
	current tree entry number More...

KVGVList	gvlist
	List of global variables. More...

KVHashList *	lhisto
	! More...

KVHashList *	ltree
	! More...

Protected Attributes inherited from TSelector
EAbort	fAbort

TList *	fInput

TObject *	fObject

TString	fOption

TSelectorList *	fOutput

Long64_t	fStatus

Protected Attributes inherited from TObject
	kOnlyPrepStep

Additional Inherited Members
Public Types inherited from TSelector
enum	EAbort

Public Types inherited from TObject
enum	EDeprecatedStatusBits

enum	EStatusBits

Static Public Member Functions inherited from TSelector
static TSelector *	GetSelector (const char *filename)

static Bool_t	IsStandardDraw (const char *selec)

Static Public Member Functions inherited from TObject
static Longptr_t	GetDtorOnly ()

static Bool_t	GetObjectStat ()

static void	SetDtorOnly (void *obj)

static void	SetObjectStat (Bool_t stat)

#include <KVEventSelector.h>

Inheritance diagram for KVEventSelector:

[legend]

Constructor & Destructor Documentation

◆ KVEventSelector()

KVEventSelector::KVEventSelector ( TTree * = 0 )

inline

Definition at line 232 of file KVEventSelector.h.

◆ ~KVEventSelector()

virtual KVEventSelector::~KVEventSelector ( )

inlinevirtual

Definition at line 238 of file KVEventSelector.h.

Member Function Documentation

◆ add_histo()

void KVEventSelector::add_histo ( TH1 * histo )

protected

Declare a histogram to be used in analysis. This method must be called when using PROOF.

Definition at line 576 of file KVEventSelector.cpp.

◆ add_tree()

void KVEventSelector::add_tree ( TTree * tree )

inlineprotected

Declare a TTree to be used in analysis. This method must be called when using PROOF.

Definition at line 192 of file KVEventSelector.h.

◆ AddGV() [1/2]

KVVarGlob * KVEventSelector::AddGV	(	const Char_t *	class_name,
		const Char_t *	name
	)

Add a global variable to the list of variables for the analysis.

"class_name" must be the name of a valid class inheriting from KVVarGlob, e.g. any of the default global variable classes defined as part of the standard KaliVeda package (see the global variables module), or the name of a user-defined class (see below).

"name" is a unique name for the new global variable object which will be created and added to the internal list of global variables. This name can be used to retrieve the object (see GetGV()) in the user's analysis.

Returns pointer to new global variable object in case more than the usual default initialisation is necessary.

User-defined global variables

The user may use her own global variables in an analysis class, without having to add them to the main libraries. If the given class name is not known, it is assumed to be a user-defined class and we attempt to compile and load the class from the user's source code. For this to work, the user must:

add to the ROOT macro path the directory where her class's source code is kept, e.g. in $HOME/.rootrc add the following line:

+Unix.*.Root.MacroPath: $(HOME)/myVarGlobs

for each user-defined class, add a line to $HOME/.kvrootrc to define a "plugin". E.g. for a class called MyNewVarGlob,

+Plugin.KVVarGlob: MyNewVarGlob MyNewVarGlob MyNewVarGlob.cpp+ "MyNewVarGlob()"

It is assumed that MyNewVarGlob.h and MyNewVarGlob.cpp will be found in $HOME/myVarGlobs (in this example).

Definition at line 442 of file KVEventSelector.cpp.

◆ AddGV() [2/2]

void KVEventSelector::AddGV ( KVVarGlob * vg )

inline

Add the global variable "vg" to the list of variables for the analysis. This is equivalent to GetGVList()->Add( vg ).

Definition at line 356 of file KVEventSelector.h.

◆ AddHisto() [1/2]

template<typename HistoType , typename... Args>

HistoType* KVEventSelector::AddHisto ( Args &&... args )

inline

Add a user histogram to the analysis. The name of the histogram can later be used in calls to FillHisto().

To use, supply a specific histogram type, HistoType, and all necessary arguments for the appropriate constructor. The method returns the address of the newly-created histogram as a pointer of type HistoType*:

// th1 is a pointer to TH1F
auto th1 = AddHisto<TH1F>("h1", "A 1-D histogram", 100, -50., 50.);
 
// th2 is a pointer to TH2F
auto th2 = AddHisto<TH2F>("h2", "A 2-D histogram", 100, -50., 50., 100, -10., 10.);

Definition at line 395 of file KVEventSelector.h.

◆ AddHisto() [2/2]

void KVEventSelector::AddHisto ( TH1 * histo )

inline

Definition at line 387 of file KVEventSelector.h.

◆ AddTree() [1/2]

TTree * KVEventSelector::AddTree	(	const TString &	name,
		const TString &	title = `""`,
		Int_t	splitLevel = `99`,
		TDirectory *	dir = `gDirectory`
	)

Add TTree with given name and title to list of TTree to be filled by user's analysis.

Definition at line 593 of file KVEventSelector.cpp.

◆ AddTree() [2/2]

void KVEventSelector::AddTree ( TTree * tree )

inline

Definition at line 415 of file KVEventSelector.h.

◆ Analysis()

virtual Bool_t KVEventSelector::Analysis ( void )

inlinevirtual

AbstractMethod("Analysis");

Reimplemented in KVEventFiltering.

Examples: ExampleE789ReconAnalysis.cpp, ExampleFilteredSimDataAnalysis.cpp, ExampleINDRAAnalysis.cpp, ExampleReconAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 333 of file KVEventSelector.h.

◆ AtEndOfRun()

Bool_t KVEventSelector::AtEndOfRun ( void )

inline

Check whether the end of run is reached for the current tree

Definition at line 375 of file KVEventSelector.h.

◆ Begin()

void KVEventSelector::Begin ( TTree * tree )

virtual

Need to parse options here for use in Terminate Also, on PROOF, any KVDataAnalyser instance has to be passed to the workers via the TSelector input list.

Reimplemented from TSelector.

Definition at line 25 of file KVEventSelector.cpp.

◆ CheckEndOfRun()

void KVEventSelector::CheckEndOfRun ( )

virtual

Testing whether EndRun() should be called.

Reimplemented in KVFAZIASelector.

Definition at line 291 of file KVEventSelector.cpp.

◆ CreateTreeFile()

Bool_t KVEventSelector::CreateTreeFile ( const Char_t * filename = "" )

For PROOF: This method must be called before creating any user TTree in InitAnalysis(). If no filename is given, default name="TreeFileFrom[name of selector class].root"

Definition at line 165 of file KVEventSelector.cpp.

◆ EndAnalysis()

virtual void KVEventSelector::EndAnalysis ( )

inlinevirtual

Reimplemented in KVEventFiltering.

Examples: ExampleE789ReconAnalysis.cpp, ExampleFilteredSimDataAnalysis.cpp, ExampleINDRAAnalysis.cpp, ExampleReconAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 342 of file KVEventSelector.h.

◆ EndRun()

virtual void KVEventSelector::EndRun ( )

inlinevirtual

Reimplemented in KVEventFiltering.

Examples: ExampleE789ReconAnalysis.cpp, ExampleFilteredSimDataAnalysis.cpp, ExampleINDRAAnalysis.cpp, ExampleReconAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 338 of file KVEventSelector.h.

◆ FillHisto() [1/2]

void KVEventSelector::FillHisto	(	const Char_t *	sname,
		const Char_t *	label,
		Double_t	weight = `1`
	)

Fill 1D histogram with named bins.

Definition at line 644 of file KVEventSelector.cpp.

◆ FillHisto() [2/2]

void KVEventSelector::FillHisto	(	const Char_t *	histo_name,
		Double_t	one,
		Double_t	two = `1`,
		Double_t	three = `1`,
		Double_t	four = `1`
	)

Find in the list, if there is an histogram named "sname" If not print an error message If yes redirect to the right method according to its closest mother class to fill it

Definition at line 611 of file KVEventSelector.cpp.

◆ FillTH1()

void KVEventSelector::FillTH1	(	TH1 *	h1,
		Double_t	one,
		Double_t	two
	)

protected

Definition at line 662 of file KVEventSelector.cpp.

◆ FillTH2()

void KVEventSelector::FillTH2	(	TH2 *	h2,
		Double_t	one,
		Double_t	two,
		Double_t	three
	)

protected

Definition at line 686 of file KVEventSelector.cpp.

◆ FillTH3()

void KVEventSelector::FillTH3	(	TH3 *	h3,
		Double_t	one,
		Double_t	two,
		Double_t	three,
		Double_t	four
	)

protected

Definition at line 709 of file KVEventSelector.cpp.

◆ FillTProfile()

void KVEventSelector::FillTProfile	(	TProfile *	h1,
		Double_t	one,
		Double_t	two,
		Double_t	three
	)

protected

Definition at line 674 of file KVEventSelector.cpp.

◆ FillTProfile2D()

void KVEventSelector::FillTProfile2D	(	TProfile2D *	h2,
		Double_t	one,
		Double_t	two,
		Double_t	three,
		Double_t	four
	)

protected

Definition at line 698 of file KVEventSelector.cpp.

◆ FillTree()

void KVEventSelector::FillTree ( const Char_t * tree_name = "" )

Filltree method, the tree named tree_name has to be declared with AddTTree(TTree*) method

if no sname="", all trees in the list is filled

Definition at line 863 of file KVEventSelector.cpp.

◆ GetBranchName()

const Char_t* KVEventSelector::GetBranchName ( ) const

inline

Definition at line 293 of file KVEventSelector.h.

◆ GetEntry()

virtual Int_t KVEventSelector::GetEntry	(	Long64_t	entry,
		Int_t	getall = `0`
	)

inlinevirtual

Reimplemented from TSelector.

Reimplemented in KVFAZIASelector.

Definition at line 262 of file KVEventSelector.h.

◆ GetEvent()

KVEvent* KVEventSelector::GetEvent ( ) const

inline

Examples: ExampleFilteredSimDataAnalysis.cpp.

Definition at line 307 of file KVEventSelector.h.

◆ GetEventNumber()

Int_t KVEventSelector::GetEventNumber ( ) const

inline

Definition at line 315 of file KVEventSelector.h.

◆ GetFriendEvent()

KVEvent* KVEventSelector::GetFriendEvent ( ) const

inline

Definition at line 270 of file KVEventSelector.h.

◆ GetFriendTreeEntry()

Int_t KVEventSelector::GetFriendTreeEntry	(	Long64_t	entry,
		Int_t	getall = `0`
	)

inline

Definition at line 266 of file KVEventSelector.h.

◆ GetGV()

KVVarGlob* KVEventSelector::GetGV ( const Char_t * name ) const

inline

Access the global variable with name "name" in the list of variables for the analysis. This is equivalent to GetGVList()->GetGV( name ).

Definition at line 366 of file KVEventSelector.h.

◆ GetGVList() [1/2]

KVGVList* KVEventSelector::GetGVList ( void )

inline

Access to the internal list of global variables

Definition at line 346 of file KVEventSelector.h.

◆ GetGVList() [2/2]

const KVGVList* KVEventSelector::GetGVList ( void ) const

inline

Access to the internal list of global variables

Definition at line 351 of file KVEventSelector.h.

◆ GetHisto()

TH1 * KVEventSelector::GetHisto ( const Char_t * name ) const

Definition at line 562 of file KVEventSelector.cpp.

◆ GetHistoList()

const KVHashList * KVEventSelector::GetHistoList ( ) const

return the list of created trees

Definition at line 549 of file KVEventSelector.cpp.

◆ GetOpt()

TString KVEventSelector::GetOpt ( const Char_t * opt ) const

virtual

Returns the value of the option

Only use after checking existence of option with IsOptGiven(const Char_t* opt)

Definition at line 918 of file KVEventSelector.cpp.

◆ GetOutputList()

virtual TList* KVEventSelector::GetOutputList ( ) const

inlinevirtual

Reimplemented from TSelector.

Definition at line 282 of file KVEventSelector.h.

◆ GetTree()

TTree * KVEventSelector::GetTree ( const Char_t * name ) const

return the tree named tree_name

Definition at line 845 of file KVEventSelector.cpp.

◆ GetTreeList()

const KVHashList * KVEventSelector::GetTreeList ( ) const

return the list of created trees

Definition at line 832 of file KVEventSelector.cpp.

◆ Init()

void KVEventSelector::Init ( TTree * tree )

virtual

The Init() function is called when the selector needs to initialize a new tree or chain. Typically here the branch addresses and branch pointers of the tree will be set. It is normally not necessary to make changes to the generated code, but the routine can be extended by the user if needed. Init() will be called many times when running on PROOF (once per file to be processed). Set object pointer

Reimplemented from TSelector.

Reimplemented in KVReconEventSelector, KVINDRAEventSelector, and KVFAZIASelector.

Definition at line 1018 of file KVEventSelector.cpp.

◆ InitAnalysis()

virtual void KVEventSelector::InitAnalysis ( )

inlinevirtual

Reimplemented in KVEventFiltering.

Examples: ExampleE789ReconAnalysis.cpp, ExampleFilteredSimDataAnalysis.cpp, ExampleINDRAAnalysis.cpp, ExampleReconAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 325 of file KVEventSelector.h.

◆ InitFriendTree()

void KVEventSelector::InitFriendTree	(	TTree *	tree,
		const TString &	branchname
	)

Set up a "friend" TTree/TChain containing KVEvent-derived objects in branch 'branchname' N.B. this is not a "friend" in the sense of TTree::AddFriend, the main TTree and the "friend" TTree can have different numbers of entries

After calling this method at the beginning of the analysis, you can access any of the events stored in the "friend" by doing:

GetFriendTreeEntry(entry_number);

KVEvent* friend_event = GetFriendEvent();

Definition at line 1064 of file KVEventSelector.cpp.

◆ InitRun()

virtual void KVEventSelector::InitRun ( )

inlinevirtual

Reimplemented in KVEventFiltering.

Examples: ExampleE789ReconAnalysis.cpp, ExampleFilteredSimDataAnalysis.cpp, ExampleINDRAAnalysis.cpp, ExampleReconAnalysis.cpp, and ExampleSimDataAnalysis.cpp.

Definition at line 329 of file KVEventSelector.h.

◆ IsOptGiven()

Bool_t KVEventSelector::IsOptGiven ( const Char_t * option )

virtual

Returns kTRUE if the option 'opt' has been set.

Definition at line 903 of file KVEventSelector.cpp.

◆ Notify()

Bool_t KVEventSelector::Notify ( )

virtual

The Notify() function is called when a new file is opened. This can be either for a new TTree in a TChain or when when a new TTree is started when using PROOF. It is normally not necessary to make changes to the generated code, but the routine can be extended by the user if needed. The return value is currently not used.

Reimplemented from TSelector.

Reimplemented in KVFAZIASelector.

Definition at line 1095 of file KVEventSelector.cpp.

◆ ParseOptions()

void KVEventSelector::ParseOptions ( )

virtual

Analyse comma-separated list of options given to TTree::Process and store all "option=value" pairs in fOptionList. Options can then be accessed using IsOptGiven(), GetOptString(), etc.

BranchName=xxxx : change name of branch in TTree containing data

EventsReadInterval=N: print "+++ 12345 events processed +++" every N events

This method is called by SlaveBegin

Reimplemented in KVFAZIASelector.

Definition at line 968 of file KVEventSelector.cpp.

◆ Process()

Bool_t KVEventSelector::Process ( Long64_t entry )

virtual

The Process() function is called for each entry in the tree (or possibly keyed object in the case of PROOF) to be processed. The entry argument specifies which entry in the currently loaded tree is to be processed. It can be passed to either KVEventSelector::GetEntry() or TBranch::GetEntry() to read either all or the required parts of the data. When processing keyed objects with PROOF, the object is already loaded and is available via the fObject pointer.

This function should contain the "body" of the analysis. It can contain simple or elaborate selection criteria, run algorithms on the data of the event and typically fill histograms.

Processing will abort cleanly if static flag fCleanAbort has been set by some external controlling process.

Use fStatus to set the return value of TTree::Process().

The return value is currently not used.

Reimplemented from TSelector.

Definition at line 218 of file KVEventSelector.cpp.

◆ RecalculateGlobalVariables()

void KVEventSelector::RecalculateGlobalVariables ( )

virtual

Use this method if you change e.g. the particle selection criteria in your Analysis() method and want to recalculate the values of all global variables for your new selection.

WARNING: the global variables are calculated automatically for you for each event before method Analysis() is called. In order for the correct particles to be included in this calculation, make sure that at the END of Analysis() you reset the selection criteria.

Definition at line 492 of file KVEventSelector.cpp.

◆ SaveHistos()

void KVEventSelector::SaveHistos	(	const Char_t *	filename = `""`,
		Option_t *	option = `"recreate"`,
		Bool_t	onlyfilled = `kFALSE`
	)

virtual

Write in file all histograms declared with AddHisto(TH1*) This method works with PROOF.

If no filename is specified, set default name : HistoFileFrom[KVEvenSelector::GetName()].root

If a filename is specified, search in gROOT->GetListOfFiles() if this file has been already opened

if yes write in it
if not, create it with the corresponding option, write in it and close it just after

onlyfilled flag allow to write all (onlyfilled=kFALSE, default) or only histograms (onlyfilled=kTRUE) those have been filled

Definition at line 772 of file KVEventSelector.cpp.

◆ SetAdditionalBranchAddress()

virtual void KVEventSelector::SetAdditionalBranchAddress ( )

inlinevirtual

if user wants to read additional branches of the tree

Definition at line 440 of file KVEventSelector.h.

◆ SetAnalysisFrame()

virtual void KVEventSelector::SetAnalysisFrame ( )

inlinevirtual

If this analysis class is used in a context where the events correspond to a known reaction for which the kinematics have been defined, we can define the centre of mass ("CM") frame for the particles in the event.

Examples: ExampleFilteredSimDataAnalysis.cpp.

Definition at line 297 of file KVEventSelector.h.

◆ SetBranchName()

void KVEventSelector::SetBranchName ( const Char_t * n )

inline

Definition at line 289 of file KVEventSelector.h.

◆ SetCombinedOutputFile()

void KVEventSelector::SetCombinedOutputFile ( const TString & filename )

inlineprotected

Call in InitAnalysis() to set the name of the single output file containing all histograms and TTrees produced by analysis (but see also SetJobOutputFileName).

This is equivalent to running the analysis with option

CombinedOutputFile=[filename]

but setting this option in InitAnalysis() will not work.

Note that if this method is not called/the option is not given, histograms and TTrees will be written in separate files.

Definition at line 207 of file KVEventSelector.h.

◆ SetCurrentRun()

virtual void KVEventSelector::SetCurrentRun ( KVDBRun * )

inlinevirtual

Reimplemented in KVReconEventSelector, and KVINDRAEventSelector.

Definition at line 305 of file KVEventSelector.h.

◆ SetEvent()

void KVEventSelector::SetEvent ( KVEvent * e )

inline

Definition at line 311 of file KVEventSelector.h.

◆ SetEventsReadInterval()

void KVEventSelector::SetEventsReadInterval ( Long64_t N )

inline

Definition at line 247 of file KVEventSelector.h.

◆ SetInputList()

virtual void KVEventSelector::SetInputList ( TList * input )

inlinevirtual

Reimplemented from TSelector.

Definition at line 278 of file KVEventSelector.h.

◆ SetJobOutputFileName()

void KVEventSelector::SetJobOutputFileName ( const TString & filename )

inline

Call in InitAnalysis() to set the name of the single output file containing all histograms and TTrees produced by analysis.

For interactive jobs or jos using PROOF, filename will be used for the ROOT file. For jobs using a batch system to execute many jobs in parallel, we use the job name with the '.root' extension.

Definition at line 446 of file KVEventSelector.h.

◆ SetObject()

virtual void KVEventSelector::SetObject ( TObject * obj )

inlinevirtual

Reimplemented from TSelector.

Definition at line 274 of file KVEventSelector.h.

◆ SetOpt()

void KVEventSelector::SetOpt	(	const Char_t *	option,
		const Char_t *	value
	)

virtual

Set a value for an option.

Definition at line 890 of file KVEventSelector.cpp.

◆ SetParticleConditions()

void KVEventSelector::SetParticleConditions	(	const KVParticleCondition &	cond,
		const KVString &	upcast_class = `""`
	)

Use this method to set criteria for selecting particles to include in analysis. The criteria defined in the KVParticleCondition object will be applied to every particle and if they are not satisfied the particle's "OK" flag will be set to false, i.e. the particle's IsOK() method will return kFALSE, and the particle will not be included in iterations such as GetEvent()->GetNextParticle("OK"). Neither will the particle be included in the evaluation of any global variables.

This method must be called in the user's InitAnalysis() or InitRun() method.

If the methods used in the condition are not defined for KVNucleus, you can give the name of the class to which the methods refer (upcast_class), or you can set it before hand (SetParticleConditionsParticleClassName)

Definition at line 523 of file KVEventSelector.cpp.

◆ SetParticleConditionsParticleClassName()

void KVEventSelector::SetParticleConditionsParticleClassName ( const KVString & t )

inline

Definition at line 382 of file KVEventSelector.h.

◆ SetTriggerConditionsForRun()

void KVEventSelector::SetTriggerConditionsForRun ( int run )

Call this method in your InitRun() method with the current run number in order to automatically reject events which are not consistent with the acquisition trigger.

Definition at line 946 of file KVEventSelector.cpp.

◆ SetUpAuxEventChain()

void KVEventSelector::SetUpAuxEventChain ( )

protected

Called by SlaveBegin() when user gives the following options:

AuxFiles: list of files containing "friend" TTrees to be made available during analysis
AuxDir: directory in which to find AuxFiles
AuxTreeName: name of tree in AuxFiles containing KVEvent objects
AuxBranchName: name of branch in AuxFiles containing KVEvent objects

Definition at line 727 of file KVEventSelector.cpp.

◆ SlaveBegin()

void KVEventSelector::SlaveBegin ( TTree * tree )

virtual

The SlaveBegin() function is called after the Begin() function. When running with PROOF SlaveBegin() is called on each slave server. The tree argument is deprecated (on PROOF 0 is passed).

ParseOptions : Manage options passed as arguments

Called user method InitAnalysis where users can create trees or histos using the appropiate methods : CreateTrees and CreateMethods

Test the presence or not of such histo or tree to manage it properly

Reimplemented from TSelector.

Reimplemented in KVFAZIASelector.

Definition at line 79 of file KVEventSelector.cpp.

◆ SlaveTerminate()

void KVEventSelector::SlaveTerminate ( )

virtual

The SlaveTerminate() function is called after all entries or objects have been processed. When running with PROOF SlaveTerminate() is called on each slave server. if tree have been defined in the CreateTrees method manage the merge of them in ProofLite session

Reimplemented from TSelector.

Definition at line 314 of file KVEventSelector.cpp.

◆ Terminate()

void KVEventSelector::Terminate ( )

virtual

The Terminate() function is the last function to be called during a query. It always runs on the client, it can be used to present the results graphically or save the results to file.

This method call the user defined EndAnalysis where user can do what she wants

Reimplemented from TSelector.

Definition at line 361 of file KVEventSelector.cpp.

◆ UnsetOpt()

void KVEventSelector::UnsetOpt ( const Char_t * opt )

virtual

Removes the option 'opt' from the internal lists, as if it had never been set.

Definition at line 933 of file KVEventSelector.cpp.

◆ Version()

virtual Int_t KVEventSelector::Version ( ) const

inlinevirtual

Reimplemented from TSelector.

Definition at line 251 of file KVEventSelector.h.

Member Data Documentation

◆ AuxEvent

KVEvent* KVEventSelector::AuxEvent

protected

[optional] events in fAuxChain

Definition at line 161 of file KVEventSelector.h.

◆ b_Event

TBranch* KVEventSelector::b_Event

protected

List of branches.

Definition at line 164 of file KVEventSelector.h.

◆ Event

KVEvent* KVEventSelector::Event

protected

Declaration of leaf types.

the events to be analysed

Definition at line 160 of file KVEventSelector.h.

◆ fAuxChain

TTree* KVEventSelector::fAuxChain

protected

[optional] pointer to another TTree or TChain which may be used during analysis

Definition at line 157 of file KVEventSelector.h.

◆ fBranchName

KVString KVEventSelector::fBranchName

protected

name of branch which contains events to analyse

Definition at line 169 of file KVEventSelector.h.

◆ fChain

TTree* KVEventSelector::fChain

protected

pointer to the analyzed TTree or TChain

Definition at line 156 of file KVEventSelector.h.

◆ fCombinedOutputFile

KVString KVEventSelector::fCombinedOutputFile

protected

optional name for single results file with trees and histos

Definition at line 184 of file KVEventSelector.h.

◆ fDisableCreateTreeFile

Bool_t KVEventSelector::fDisableCreateTreeFile

protected

used with PROOF

Definition at line 189 of file KVEventSelector.h.

◆ fEventsRead

Long64_t KVEventSelector::fEventsRead

protected

number of events read

Definition at line 176 of file KVEventSelector.h.

◆ fEventsReadInterval

Long64_t KVEventSelector::fEventsReadInterval

protected

interval at which to print number of events read

Definition at line 177 of file KVEventSelector.h.

◆ fFirstEvent

Bool_t KVEventSelector::fFirstEvent

protected

set to kFALSE after first event is read

Definition at line 174 of file KVEventSelector.h.

◆ fNotifyCalled

Bool_t KVEventSelector::fNotifyCalled

protected

avoid multiple calls to Notify/InitRun

Definition at line 183 of file KVEventSelector.h.

◆ fOptionList

KVNameValueList KVEventSelector::fOptionList

protected

parsed list of options given to TTree::Process

Definition at line 187 of file KVEventSelector.h.

◆ fPartCond

KVParticleCondition KVEventSelector::fPartCond

protected

(optional) conditions for selecting particles

Definition at line 171 of file KVEventSelector.h.

◆ fPartName

KVString KVEventSelector::fPartName

protected

(optional) classname for upcasting in KVParticleCondition::Optimize

Definition at line 172 of file KVEventSelector.h.

◆ fTreeEntry

Long64_t KVEventSelector::fTreeEntry

protected

current tree entry number

Definition at line 178 of file KVEventSelector.h.

◆ gvlist

KVGVList KVEventSelector::gvlist

protected

List of global variables.

Definition at line 167 of file KVEventSelector.h.

◆ lhisto

KVHashList* KVEventSelector::lhisto

protected

!

Definition at line 180 of file KVEventSelector.h.

◆ ltree

KVHashList* KVEventSelector::ltree

protected

!

Definition at line 181 of file KVEventSelector.h.

◆ mergeFile

TProofOutputFile* KVEventSelector::mergeFile

for merging with PROOF

Definition at line 227 of file KVEventSelector.h.

◆ writeFile

TFile* KVEventSelector::writeFile

Definition at line 226 of file KVEventSelector.h.

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

kaliveda.doxygen/KVMultiDet/analysis/KVEventSelector.h
kaliveda.doxygen/KVMultiDet/analysis/KVEventSelector.cpp

Usage

Global Variables

Use with PROOF(lite)

Histograms & TTrees in the same output file

Generating & saving profiles, divided histograms, etc.

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ KVEventSelector()

◆ ~KVEventSelector()

Member Function Documentation

◆ add_histo()

◆ add_tree()

◆ AddGV() [1/2]

User-defined global variables

◆ AddGV() [2/2]

◆ AddHisto() [1/2]

◆ AddHisto() [2/2]

◆ AddTree() [1/2]

◆ AddTree() [2/2]

◆ Analysis()

◆ AtEndOfRun()

◆ Begin()

◆ CheckEndOfRun()

◆ CreateTreeFile()

◆ EndAnalysis()

◆ EndRun()

◆ FillHisto() [1/2]

◆ FillHisto() [2/2]

◆ FillTH1()

◆ FillTH2()

◆ FillTH3()

◆ FillTProfile()

◆ FillTProfile2D()

◆ FillTree()

◆ GetBranchName()

◆ GetEntry()

◆ GetEvent()

◆ GetEventNumber()

◆ GetFriendEvent()

◆ GetFriendTreeEntry()

◆ GetGV()

◆ GetGVList() [1/2]

◆ GetGVList() [2/2]

◆ GetHisto()

◆ GetHistoList()

◆ GetOpt()

◆ GetOutputList()

◆ GetTree()

◆ GetTreeList()

◆ Init()

◆ InitAnalysis()

◆ InitFriendTree()

◆ InitRun()

◆ IsOptGiven()

◆ Notify()

◆ ParseOptions()

◆ Process()

◆ RecalculateGlobalVariables()

◆ SaveHistos()

◆ SetAdditionalBranchAddress()

◆ SetAnalysisFrame()

◆ SetBranchName()

◆ SetCombinedOutputFile()

◆ SetCurrentRun()

◆ SetEvent()

◆ SetEventsReadInterval()

◆ SetInputList()

◆ SetJobOutputFileName()

◆ SetObject()

◆ SetOpt()

◆ SetParticleConditions()

◆ SetParticleConditionsParticleClassName()

◆ SetTriggerConditionsForRun()

◆ SetUpAuxEventChain()

◆ SlaveBegin()

◆ SlaveTerminate()