JetReCalibrator.JetReCalibrator Class Reference

Public Member Functions
def	__init__
def	correct
def	correctAll

Public Attributes
	JetCorrector
	JetUncertainty
	L1JetPar
	L2JetPar
	L3JetPar
	ResJetPar
	vPar

Detailed Description

Definition at line 6 of file JetReCalibrator.py.

Constructor & Destructor Documentation

def JetReCalibrator.JetReCalibrator.__init__	(		self,
			globalTag,
			jetFlavour,
			doResidualJECs,
			jecPath,
			upToLevel = 3
	)

Create a corrector object that reads the payloads from the text dumps of a global tag under
    CMGTools/RootTools/data/jec  (see the getJec.py there to make the dumps).
   It will apply the L1,L2,L3 and possibly the residual corrections to the jets.

Definition at line 7 of file JetReCalibrator.py.

    def __init__(self,globalTag,jetFlavour,doResidualJECs,jecPath,upToLevel=3):
        """Create a corrector object that reads the payloads from the text dumps of a global tag under
            CMGTools/RootTools/data/jec  (see the getJec.py there to make the dumps).
           It will apply the L1,L2,L3 and possibly the residual corrections to the jets."""
        # Make base corrections
        path = jecPath #"%s/src/CMGTools/RootTools/data/jec" % os.environ['CMSSW_BASE'];
        self.L1JetPar  = ROOT.JetCorrectorParameters("%s/%s_L1FastJet_%s.txt" % (path,globalTag,jetFlavour),"");
        self.L2JetPar  = ROOT.JetCorrectorParameters("%s/%s_L2Relative_%s.txt" % (path,globalTag,jetFlavour),"");
        self.L3JetPar  = ROOT.JetCorrectorParameters("%s/%s_L3Absolute_%s.txt" % (path,globalTag,jetFlavour),"");
        self.vPar = ROOT.vector(ROOT.JetCorrectorParameters)()
        self.vPar.push_back(self.L1JetPar);
        if upToLevel >= 2: self.vPar.push_back(self.L2JetPar);
        if upToLevel >= 3: self.vPar.push_back(self.L3JetPar);
        # Add residuals if needed
        if doResidualJECs : 
            self.ResJetPar = ROOT.JetCorrectorParameters("%s/%s_L2L3Residual_%s.txt" % (path,globalTag,jetFlavour))
            self.vPar.push_back(self.ResJetPar);
        #Step3 (Construct a FactorizedJetCorrector object) 
        self.JetCorrector = ROOT.FactorizedJetCorrector(self.vPar)
        if os.path.exists("%s/%s_Uncertainty_%s.txt" % (path,globalTag,jetFlavour)):
            self.JetUncertainty = ROOT.JetCorrectionUncertainty("%s/%s_Uncertainty_%s.txt" % (path,globalTag,jetFlavour));
        else:
            print 'Missing JEC uncertainty file "%s/%s_Uncertainty_%s.txt", so jet energy uncertainties will not be available' % (path,globalTag,jetFlavour)