def getHistogram(plot,runRange,backgrounds,region):
path = locations[runRange.era].dataSetPath
treesEE = readTrees(path,"EE")
treesEM = readTrees(path,"EMu")
treesMM = readTrees(path,"MuMu")
eventCounts = totalNumberOfGeneratedEvents(path)
processes = []
for background in backgrounds:
processes.append(Process(getattr(Backgrounds[runRange.era],background),eventCounts))
triggerSF_EE,_ = getTriggerScaleFactor("EE", region, runRange)
triggerSF_MM,_ = getTriggerScaleFactor("MuMu", region, runRange)
triggerSF_EM,_ = getTriggerScaleFactor("EMu", region, runRange)
histoEE = TheStack(processes,runRange.lumi,plot,treesEE,"None",1.0,triggerSF_EE,1.0,useTriggerEmulation=True).theHistogram
histoMM = TheStack(processes,runRange.lumi,plot,treesMM,"None",1.0,triggerSF_MM,1.0,useTriggerEmulation=True).theHistogram
histoEM = TheStack(processes,runRange.lumi,plot,treesEM,"None",1.0,triggerSF_EM,1.0,useTriggerEmulation=True).theHistogram
histSF = histoEE.Clone()
histSF.Add(histoMM.Clone(), 1)
histSF.Add(histoEM.Clone(), -1)
return histSF
treesEE = readTrees(path,"EE")
treesEM = readTrees(path,"EMu")
treesMM = readTrees(path,"MuMu")
histoEE = TheStack(processes,runRange.lumi,plot,treesEE,"None",1.0,1.0,1.0).theHistogram
histoMM = TheStack(processes,runRange.lumi,plot,treesMM,"None",1.0,1.0,1.0).theHistogram
histoEM = TheStack(processes,runRange.lumi,plot,treesEM,"None",1.0,1.0,1.0).theHistogram
#~ histoEE.Scale(getattr(triggerEffs,"central").effEE.valMC)
#~ histoMM.Scale(getattr(triggerEffs,"central").effMM.valMC)
#~ histoEM.Scale(getattr(triggerEffs,"central").effEM.valMC)
histoSF = histoEE.Clone()
histoSF.Add(histoMM)
hCanvas = TCanvas("hCanvas", "Distribution", 800,800)
plotPad = ROOT.TPad("plotPad","plotPad",0,0.3,1,1)
ratioPad = ROOT.TPad("ratioPad","ratioPad",0,0.,1,0.3)
setTDRStyle()
plotPad.UseCurrentStyle()
ratioPad.UseCurrentStyle()
plotPad.Draw()
ratioPad.Draw()
plotPad.cd()
legend = TLegend(0.7, 0.55, 0.95, 0.95)
