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#include <iostream>
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#include "TString.h"
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#include "TH1.h"
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#include "TTree.h"
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#include "PlotUtil.h"
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using namespace std;
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PlotUtil::PlotUtil(HistHolder* hh) :
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hh_(hh),
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debug_(false),
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lastVarname_("MET")
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{
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}
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PlotUtil::~PlotUtil() {}
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Double_t PlotUtil::ErrorOnIntegral(const TH1D* h, const Int_t lowbin, Int_t highbin) {
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if ( highbin == 0) highbin = h->GetNbinsX();
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Double_t err=0;
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Double_t thisbin=0;
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for ( int i = lowbin; i<=highbin ; i++) {
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thisbin = h->GetBinError(i);
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err += thisbin*thisbin;
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}
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return sqrt( err );
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}
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void PlotUtil::createHistos(TString varname,int nbins, float hmin, float hmax) {
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if (varname=="") varname = lastVarname_;
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for ( map<TString,TTree*>::const_iterator isamp=samples_.begin() ; isamp!=samples_.end() ; ++isamp) {
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TString fullname;
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fullname.Form("H%s_%s",varname.Data(),isamp->first.Data());
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hh_->make(fullname.Data(),varname.Data(),nbins,hmin,hmax);
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}
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lastVarname_=varname;
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}
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void PlotUtil::fillHistos(TString varname,TString cut, TString drawcommand) {
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if (varname=="") varname = lastVarname_;
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if (drawcommand=="") drawcommand=varname;
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for ( map<TString,TTree*>::const_iterator i=samples_.begin() ; i!=samples_.end() ; ++i) {
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i->second->Project(getFullName(varname,i->first),drawcommand,cut);
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}
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lastVarname_=varname;
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}
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TString PlotUtil::getFullName(TString varname,TString sampleid) {
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TString fullname;
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fullname.Form("H%s_%s",varname.Data(),sampleid.Data());
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return fullname;
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}
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void PlotUtil::addQCD(TString varname) {
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if (varname=="") varname = lastVarname_;
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const TString qcdhist="H"+varname+"_qcd";
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TH1D* hbase=hh_->find(qcdhist);
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if (hbase==0) {
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cout<<"Could not find the _qcd histogram!"<<endl;
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return;
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}
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for ( map<TString,TTree*>::const_iterator i=samples_.begin() ; i!=samples_.end() ; ++i) {
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TString fullname=getFullName(varname,i->first);
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if ( fullname!= qcdhist && fullname.Contains("_qcd") ) {
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if (debug_) cout<<"Adding to base qcd histo: "<<fullname<<endl;
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TH1D* htoadd=hh_->find(fullname);
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hbase->Add(htoadd);
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}
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}
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lastVarname_=varname;
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}
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void PlotUtil::setLineColors(TString varname) {
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if (varname=="") varname = lastVarname_;
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for ( map<TString,UInt_t>::const_iterator i=sampleColors_.begin() ; i!=sampleColors_.end() ; ++i) {
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TString fullname=getFullName(varname,i->first);
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if (debug_) {
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cout<<fullname<<endl;
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cout<<hh_->find(fullname)<<endl;
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}
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hh_->find(fullname)->SetLineColor(i->second);
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}
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lastVarname_=varname;
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}
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void PlotUtil::drawPlots(TString varname) {
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if (varname=="") varname = lastVarname_;
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//want to exclude the secondary qcd histos
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const TString qcdhist="H"+varname+"_qcd";
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//find the "tallest" histogram
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TH1D* firsttodraw=0;
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double max=0;
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for ( map<TString,TTree*>::const_iterator i=samples_.begin() ; i!=samples_.end() ; ++i) {
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TString fullname=getFullName(varname,i->first);
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if ( (!fullname.Contains("_qcd")) || (fullname ==qcdhist) ) {
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double mymax= hh_->find(fullname)->GetMaximum();
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if (mymax>max) {
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max=mymax;
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firsttodraw = hh_->find(fullname);
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}
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}
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}
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firsttodraw->Draw();
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//draw the rest
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for ( map<TString,TTree*>::const_iterator i=samples_.begin() ; i!=samples_.end() ; ++i) {
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TString fullname=getFullName(varname,i->first);
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if ( (!fullname.Contains("_qcd")) || (fullname ==qcdhist) ) {
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TH1D* hist= hh_->find(fullname);
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if (hist!= firsttodraw) hist->Draw("SAME");
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}
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}
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lastVarname_=varname;
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}
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void PlotUtil::fillLegend(TLegend * leg, TString varname) {
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if (varname=="") varname = lastVarname_;
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if (debug_) cout<<"[fillLegend]"<<endl;
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setLineColors(varname);
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if (debug_) cout<<"[done with setLineColors()]"<<endl;
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//want to exclude the secondary qcd histos
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const TString qcdhist="H"+varname+"_qcd";
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for ( map<TString,TTree*>::const_iterator i=samples_.begin() ; i!=samples_.end() ; ++i) {
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TString fullname=getFullName(varname,i->first);
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if ( (!fullname.Contains("_qcd")) || (fullname ==qcdhist) ) {
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leg->AddEntry(hh_->find(fullname), sampleNames_[i->first]);
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}
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}
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lastVarname_=varname;
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}
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void PlotUtil::addSample(TString sampleid,TTree* sampletree,TString sampleName,UInt_t kcolor) {
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samples_[sampleid]=sampletree;
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if (sampleName=="") sampleName=sampleid;
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sampleNames_[sampleid]=sampleName;
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sampleColors_[sampleid]=kcolor;
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}
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