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#include <memory>
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#include <TROOT.h>
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#include <TString.h>
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#include <TStyle.h>
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#include <TH1.h>
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#include <TCanvas.h>
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#include <TLegend.h>
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#include <TFile.h>
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#include <TTree.h>
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#include <Riostream.h>
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// #include "TLorentzVector.h"
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// #include <map>
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// #include <vector>
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// #include <iostream>
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using namespace std;
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void comparePDF(){
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gROOT->SetStyle("CMS");
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// gStyle->SetOptStat("n");
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// gStyle->SetOptTitle(1);
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// gStyle->SetOptFit(11111);
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gStyle->SetPadTopMargin(0.11);
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gStyle->SetPadRightMargin(0.05);
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gStyle->SetPadLeftMargin(0.11);
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gStyle->SetPadBottomMargin(0.11);
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const double wttbar = 0.0081;
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const int nmembers = 45;
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TH1D *h1 = new TH1D[nmembers];
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TH1D *h2 = new TH1D[nmembers];
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TH1D *hm3 = new TH1D[nmembers-1];
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TH1D *hm3prime = new TH1D[nmembers-1];
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double ratio[2] = {0.,0.};
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double systMax1 = 0.,systMax2 = 0.;
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TFile *f0=TFile::Open("TopAnalysis_TTJets-madgraph_Fall08_all_all_pdf.root");
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TCanvas *cv = new TCanvas("cv","M3 & M3' systematics",1000,800);
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cv->Divide(2,2,0.001,0.001);
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cv->cd(1);
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for(int i=0; i < nmembers; i++){
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TString suffix="PDF_";
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suffix+=i;
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h1[i] = (TH1D*)f0->Get(TString("Mass/HadronicTop_mass_M3_")+suffix);
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h1[i].SetLineColor(i+1);
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h1[i].Scale(wttbar);
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if(i==0){
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h1[i].GetXaxis()->SetTitle("M3 [GeV/c^{2}]");
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h1[i].GetXaxis()->SetLabelFont(42);
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h1[i].GetXaxis()->SetLabelSize(0.04);
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h1[i].GetXaxis()->SetTitleFont(42);
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h1[i].GetXaxis()->SetTitleSize(0.04);
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h1[i].GetXaxis()->SetTitleOffset(1.2);
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h1[i].GetXaxis()->SetRangeUser(100.,450.);
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h1[i].GetYaxis()->SetTitle("Events ( L_{Int}= 20 pb^{-1} )");
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h1[i].SetMaximum(50.);
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h1[i].GetYaxis()->SetLabelFont(42);
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h1[i].GetYaxis()->SetLabelSize(0.04);
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h1[i].GetYaxis()->SetTitleFont(42);
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h1[i].GetYaxis()->SetTitleSize(0.04);
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h1[i].GetYaxis()->SetTitleOffset(1.2);
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h1[i].Draw();
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}
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else
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h1[i].SetLineWidth(0.5);
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h1[i].Draw("same");
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}
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cv->cd(2);
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for(int i=0; i < nmembers; i++){
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TString suffix="PDF_";
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suffix+=i;
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h2[i] = (TH1D*)f0->Get(TString("Mass/HadronicTop_mass_M3prime_")+suffix);
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h2[i].SetLineColor(i+1);
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h2[i].Scale(wttbar);
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if(i==0){
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h2[i].GetXaxis()->SetTitle("M3' (#chi^{2}) [GeV/c^{2}]");
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h2[i].GetXaxis()->SetLabelFont(42);
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h2[i].GetXaxis()->SetLabelSize(0.04);
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h2[i].GetXaxis()->SetTitleFont(42);
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h2[i].GetXaxis()->SetTitleSize(0.04);
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h2[i].GetXaxis()->SetTitleOffset(1.2);
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h2[i].GetXaxis()->SetRangeUser(100.,450.);
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h2[i].GetYaxis()->SetTitle("Events ( L_{Int}= 20 pb^{-1} )");
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h2[i].SetMaximum(100.);
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h2[i].GetYaxis()->SetLabelFont(42);
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h2[i].GetYaxis()->SetLabelSize(0.04);
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h2[i].GetYaxis()->SetTitleFont(42);
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h2[i].GetYaxis()->SetTitleSize(0.04);
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h2[i].GetYaxis()->SetTitleOffset(1.2);
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h2[i].Draw();
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}
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else
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h2[i].SetLineWidth(0.5);
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h2[i].Draw("same");
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}
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int nbin = h1[0].GetXaxis()->FindBin(500.)-1;
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// cout<<"nbin = "<<nbin<<endl;
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const int nbin1 = nbin+1;
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double xMax=500.;
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double xMin=100.;
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double delta1[nbin1];
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double delta2[nbin1];
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double delta3[nbin1];
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double delta4[nbin1];
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for (int i=1;i<nmembers;i++){
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TString name1 = "hm3_";
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TString name2 = "hm3prime_";
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name1+=i;
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name2+=i;
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hm3[i] = new TH1D(name1,"M3 [GeV/c^{2}]",nbin,xMin,xMax);
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hm3prime[i] = new TH1D(name2,"M3' (#chi^{2}) [GeV/c^{2}]",nbin,xMin,xMax);
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for (int j=1;j<=nbin;j++){ // exclude over/underflow bins
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ratio[0] = h1[i].GetBinContent(j)/h1[0].GetBinContent(j);
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ratio[1] = h2[i].GetBinContent(j)/h2[0].GetBinContent(j);
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hm3[i].SetBinContent(j,ratio[0]);
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hm3prime[i].SetBinContent(j,ratio[1]);
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}
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cv->cd(3);
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if (i==1){
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hm3[i].GetXaxis()->SetTitle("M3 [GeV/c^{2}]");
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hm3[i].GetXaxis()->SetTitleSize(0.04);
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hm3[i].GetXaxis()->SetTitleOffset(1.2);
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hm3[i].GetXaxis()->SetRangeUser(100.,450.);
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hm3[i].GetYaxis()->SetTitle("Ratio");
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hm3[i].GetYaxis()->SetTitleSize(0.04);
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hm3[i].GetYaxis()->SetTitleOffset(1.2);
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hm3[i].SetMaximum(1.2);
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hm3[i].SetMinimum(0.8);
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hm3[i].Draw();
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}
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else{
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hm3[i].SetLineWidth(0.5);
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hm3[i].SetLineColor(i+1);
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hm3[i].Draw("same");
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}
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cv->cd(4);
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if (i==1){
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hm3prime[i].GetXaxis()->SetTitle("M3' (#chi^{2}) [GeV/c^{2}]");
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hm3prime[i].GetXaxis()->SetTitleSize(0.04);
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hm3prime[i].GetXaxis()->SetTitleOffset(1.2);
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hm3prime[i].GetXaxis()->SetRangeUser(100.,450.);
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hm3prime[i].GetYaxis()->SetTitle("Ratio");
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hm3prime[i].GetYaxis()->SetTitleSize(0.04);
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hm3prime[i].GetYaxis()->SetTitleOffset(1.2);
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hm3prime[i].SetMaximum(1.2);
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hm3prime[i].SetMinimum(0.8);
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hm3prime[i].Draw();
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}
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else{
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hm3prime[i].SetLineWidth(0.5);
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hm3prime[i].SetLineColor(i+1);
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hm3prime[i].Draw("same");
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}
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}
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TH1D* hm3SystP = new TH1D("M3SystP","M3 [GeV/c^{2}]",nbin,xMin,xMax);
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TH1D* hm3SystM = new TH1D("M3SystM","M3 [GeV/c^{2}]",nbin,xMin,xMax);
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TH1D* hm3primeSystP = new TH1D("M3primeSystP","M3' (#chi^{2}) [GeV/c^{2}]",nbin,xMin,xMax);
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TH1D* hm3primeSystM = new TH1D("M3primeSystM","M3' (#chi^{2}) [GeV/c^{2}]",nbin,xMin,xMax);
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// Calculate syst. errors
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for (int i=1;i <= nbin;i++){
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for (int j=1;j<nmembers;j++){
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delta1[i-1] += (hm3[j].GetBinContent(i)>1)?pow(hm3[j].GetBinContent(i)-1,2):0;
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delta2[i-1] += (hm3[j].GetBinContent(i)<1)?pow(hm3[j].GetBinContent(i)-1,2):0;
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}
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delta1[i-1] = sqrt(delta1[i-1]);
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hm3SystP->SetBinContent(i,1+delta1[i-1]);
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delta2[i-1] = sqrt(delta2[i-1]);
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hm3SystM->SetBinContent(i,1-delta2[i-1]);
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}
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cv->cd(3);
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hm3SystP->SetLineWidth(2);
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hm3SystP->Draw("same");
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hm3SystM->SetLineWidth(2);
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hm3SystM->Draw("same");
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for (int i=1;i <= nbin;i++){
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for (int j=1;j<nmembers;j++){
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delta3[i-1] += (hm3prime[j].GetBinContent(i)>1)?pow(hm3prime[j].GetBinContent(i)-1,2):0;
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delta4[i-1] += (hm3prime[j].GetBinContent(i)<1)?pow(hm3prime[j].GetBinContent(i)-1,2):0;
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}
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delta3[i-1] = sqrt(delta3[i-1]);
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hm3primeSystP->SetBinContent(i,1+delta3[i-1]);
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delta4[i-1] = sqrt(delta4[i-1]);
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hm3primeSystM->SetBinContent(i,1-delta4[i-1]);
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}
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cv->cd(4);
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hm3primeSystP->SetLineWidth(2);
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hm3primeSystP->Draw("same");
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hm3primeSystM->SetLineWidth(2);
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hm3primeSystM->Draw("same");
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}
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