fitResidual Namespace Reference

Functions
def	fitResidual (histo, nSigmas=2, verbose=False)

Function Documentation

def fitResidual.fitResidual	(		histo,
			nSigmas = 2,
			verbose = False
	)

Definition at line 3 of file fitResidual.py.

def fitResidual(histo,nSigmas=2,verbose=False):
    option = "R0"
    if not verbose: option += "Q"

    minFit = histo.GetMean() - histo.GetRMS()
    maxFit = histo.GetMean() + histo.GetRMS()

    funcName = histo.GetName() + "_gaus"
    fitFunc = ROOT.TF1(funcName,"gaus",minFit,maxFit)
    histo.Fit(fitFunc,option)

    minFit = fitFunc.GetParameter(1) - nSigmas*fitFunc.GetParameter(2)
    maxFit = fitFunc.GetParameter(1) + nSigmas*fitFunc.GetParameter(2)
    fitFunc.SetRange(minFit,maxFit)
    histo.Fit(fitFunc,option)

    return (histo,fitFunc)

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