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#ifndef HANDLEHISTS
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#define HANDLEHISTS
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#include <string>
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#include <vector>
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#include <map>
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class TH1;
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class TGraph;
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class ConfigFile;
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class handleHists
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{
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public:
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handleHists( ConfigFile* );
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~handleHists();
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void PlotStackedBackground(const std::string out);
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void PlotAllSystematics(const std::string out);
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void PlotHistograms(const std::string out);
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void Print();
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private:
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TH1 * GetHist(const std::string file, const std::string hist, const std::string treename="", const std::string uncertainty="", const std::string direction="");
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TH1 * GetSyst(const std::string, const TH1*h1, const TH1*h2=0, const TH1*h3=0);
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TGraph * MakeBand(const TH1*h1, const TH1*h2);
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std::vector<TH1*> _qcd_hists;
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std::vector<TH1*> _ttbar_hists;
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std::vector<TH1*> _znunu_hists;
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std::vector<TH1*> _signal_hists;
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std::vector<TH1*> _data_hists;
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std::map<const TH1*, std::vector<TH1*> > _syst_up_corr; //uncertainties for the
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std::map<const TH1*, std::vector<TH1*> > _syst_dn_corr; //histogram "key", e.g.
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std::map<const TH1*, std::vector<TH1*> > _syst_up_uncorr; //_backgd_hists[0]
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std::map<const TH1*, std::vector<TH1*> > _syst_dn_uncorr;
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std::string ndata, nsignal, nznunu, nttbar, nqcd;
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std::vector<std::string> vars, corr_unc, uncorr_unc;
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int _plotindex; //internal counter to make internal hist names unique
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bool _plotSystematics; //switch to plot all systematic uncertainties
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bool _showSignalBand; //switch to show the signal uncert
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bool _showDiff;
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double _SumOfDiffs;
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};
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#endif
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