python.MuonSegmentFilter.MuonSegmentFilter Class Reference

Inheritance diagram for python.MuonSegmentFilter.MuonSegmentFilter:

Collaboration diagram for python.MuonSegmentFilter.MuonSegmentFilter:

Public Member Functions
def	__init__ (self, name="MuonSegmentFilter", **kw)
def	initialize (self)
def	execute (self)
def	finalize (self)

Public Attributes
	muonSegmentContainerName
	initialize base class More...
	muonSegmentContainerType
	passAll
	minNumberSegments
	maxNumberSegments
	sgSvc
	retrieve a handle to the event store More...
	containerNames
	nProcessed
	Also, declare some counters and initialize them to zero. More...
	nMuonSegments
	nEventPassed

Detailed Description

This class is a short algorithm to select events that contain some 
number of muon segments (probably zero).

Definition at line 23 of file MuonSegmentFilter.py.

Constructor & Destructor Documentation

__init__()

def python.MuonSegmentFilter.MuonSegmentFilter.__init__	(		self,
			name = "MuonSegmentFilter",
		**	kw
	)

Definition at line 31 of file MuonSegmentFilter.py.

    def __init__ ( self, name = "MuonSegmentFilter", **kw ):
        
        kw['name'] = name
        super(MuonSegmentFilter, self).__init__(**kw)
        
        
        self.muonSegmentContainerName = kw.get('muonSegmentContainers', "MooreSegments")
        self.muonSegmentContainerType = kw.get('muonSegmentContainerType', "Trk::SegmentCollection")         
        self.passAll            = kw.get('passAll', False)
        self.minNumberSegments    = kw.get('minNumberSegments', 0)
        self.maxNumberSegments    = kw.get('maxNumberSegments', 0)        
 
        #handle to storegate
        self.sgSvc = None
        self.containerNames = []
 
        return
 

Member Function Documentation

execute()

def python.MuonSegmentFilter.MuonSegmentFilter.execute

(

self

)

Definition at line 71 of file MuonSegmentFilter.py.

    def execute(self):
        self.nProcessed+=1
        self.msg.debug( '==> execute %s on %r. event...', self.name(), self.nProcessed )
        
        
        if self.passAll :
            self.msg.debug( '%s event passed because passAll is true', self.name() )
            self.setFilterPassed(True)
            return StatusCode.Success
 
        _retrieve = self.sgSvc.retrieve
 
        try :
            muSegCollection = _retrieve (self.muonSegmentContainerType, self.muonSegmentContainerName)            
        except LookupError :
            self.msg.warning('%s container not found in StoreGate ', self.muonSegmentContainerName)
   
        
        if muSegCollection.__len__() >=  self.minNumberSegments and \
             muSegCollection.__len__()<=  self.maxNumberSegments  :
            self.nEventPassed += 1
            self.msg.debug( '%s event passed', self.name() )
            self.setFilterPassed(True)
        else :
            self.msg.debug( '%s event failed', self.name() )
            self.setFilterPassed(False)
 
        return StatusCode.Success
 
 
 

finalize()

def python.MuonSegmentFilter.MuonSegmentFilter.finalize

(

self

)

Definition at line 102 of file MuonSegmentFilter.py.

    def finalize(self):
        
        import math
 
        effiNumPassed = 0.0
        effiErrNumPassed = 0.0        
        try :
            # Efficiencies
            effiNumPassed = self.nEventPassed / float(self.nProcessed)
            # Error on efficiencies, use binomial errors
            effiErrNumPassed = 100.0 * math.sqrt( effiNumPassed*(1.0 - effiNumPassed) / float(self.nProcessed) )
            effiNumPassed *= 100.0
 
        except ZeroDivisionError :
            self.msg.warning( 'Division by zero error when calculating the uncertainties on the pass efficiencies...' )
 
        
        self.msg.info( '==> finalize %s...', self.name() )
        self.msg.info( '***************************************************************' )
        self.msg.info( 'Cut-flow table of %s skimming algorithm:', self.name() )
        self.msg.info( '-------------' )
        self.msg.info( ' Number of processed events: %r', self.nProcessed )
        self.msg.info( ' Events after numberPassed %r and resulting efficiency = (%3.3f +/- %3.3f)%%', self.nEventPassed, effiNumPassed, effiErrNumPassed )
        self.msg.info( '***************************************************************' )
 
        return StatusCode.Success
 
 

initialize()

def python.MuonSegmentFilter.MuonSegmentFilter.initialize

(

self

)

Definition at line 49 of file MuonSegmentFilter.py.

    def initialize(self):
        self.msg.info( '************************************' )
        self.msg.info( '===> initialize %s...', self.name() )
        self.msg.info( 'Will apply the following cuts:' )
        self.msg.info( 'Minimum number of segments = %r',str(self.minNumberSegments) )
        self.msg.info( 'Maximum number of segments = %r',str(self.maxNumberSegments) )
 
        
        self.nProcessed            = 0
        self.nMuonSegments         = 0
        self.nEventPassed          = 0
 
        
        self.sgSvc = PyAthena.py_svc('StoreGateSvc')
        if not self.sgSvc :
            self.msg.error("could not retrieve a handle to the event store !")
            return StatusCode.Failure
 
        return StatusCode.Success
 
 
 

Member Data Documentation

containerNames

python.MuonSegmentFilter.MuonSegmentFilter.containerNames

Definition at line 45 of file MuonSegmentFilter.py.

maxNumberSegments

python.MuonSegmentFilter.MuonSegmentFilter.maxNumberSegments

Definition at line 41 of file MuonSegmentFilter.py.

minNumberSegments

python.MuonSegmentFilter.MuonSegmentFilter.minNumberSegments

Definition at line 40 of file MuonSegmentFilter.py.

muonSegmentContainerName

python.MuonSegmentFilter.MuonSegmentFilter.muonSegmentContainerName

initialize base class

Define the cuts

Definition at line 37 of file MuonSegmentFilter.py.

muonSegmentContainerType

python.MuonSegmentFilter.MuonSegmentFilter.muonSegmentContainerType

Definition at line 38 of file MuonSegmentFilter.py.

nEventPassed

python.MuonSegmentFilter.MuonSegmentFilter.nEventPassed

Definition at line 59 of file MuonSegmentFilter.py.

nMuonSegments

python.MuonSegmentFilter.MuonSegmentFilter.nMuonSegments

Definition at line 58 of file MuonSegmentFilter.py.

nProcessed

python.MuonSegmentFilter.MuonSegmentFilter.nProcessed

Also, declare some counters and initialize them to zero.

Definition at line 57 of file MuonSegmentFilter.py.

passAll

python.MuonSegmentFilter.MuonSegmentFilter.passAll

Definition at line 39 of file MuonSegmentFilter.py.

sgSvc

python.MuonSegmentFilter.MuonSegmentFilter.sgSvc

retrieve a handle to the event store

Definition at line 44 of file MuonSegmentFilter.py.

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

• MuonSegmentFilter.py