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hist_fit.C
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// You should know how many cuts are placed on Elong and Eshort. This value will be used as **** nE1E2Cuts ***.
#include<iostream>
#include<iomanip>
#include"TH1.h"
#include"TROOT.h"
#include"TH2.h"
#include"TFile.h"
#include"TDirectory.h"
#include"TTree.h"
#include"TBrowser.h"
#include"TF1.h"
#include<string>
#include<vector>
#include"TGraphErrors.h"
#include"TGraph.h"
using namespace std;
int nietaHF=26,niphiHF=36,minEntryPerBin=20;
vector<double> E1,E2,dE1,dE2;
int fitlinecolor=kRed;
void hist_fit(const char* ipfname){
// ********************************** nE1E2Cuts **************************************
int nE1E2Cuts=5;
//*************************************************************************************
void hist1D(TH1D*);
void ProfileFit(TProfile*);
char name[100],oDirName[100],iDirName[100],iDirNameRatio[100],title[100];
TFile *f = new TFile(ipfname);
sprintf(name,"fit_%s",ipfname);
TFile *fout = new TFile(name,"RECREATE");
// fout->mkdir("Cut0");
TObjArray Hlist(0);
TH1D *h=(TH1D*)f->FindObjectAny("nHFREcHits");
Hlist.Add(h);
h=(TH1D*)f->FindObjectAny("HFRecHitEnergy");
hist1D(h);
Hlist.Add(h);
TProfile *p=(TProfile*)f->FindObjectAny("P_EshortvsElong");
Hlist.Add(p);
TH2D *h2=(TH2D*)f->FindObjectAny("EshortvsElong");
Hlist.Add(h2);
// TObjArray Hlist2(0);
// use this if you are raeding files obtained from ED Analyzer(no trees) TDirectory *demo = (TDirectory*) f->FindObjectAny("demo");
for(int i=0;i<nE1E2Cuts;i++){
TObjArray Hlist2(0),HlistRatio(0);
char name_pdf[100];
sprintf(oDirName,"E1E2Cut%iIeta",i);
fout->mkdir(oDirName);
sprintf(oDirName,"RatiovsE1_ECut%iIeta",i);
fout->mkdir(oDirName);
// use this if you are reading files obtained from ED Analyzer(no trees) demo->cd();
sprintf(iDirName,"E1E2Cut%iIeta",i); //for E2 vs E1 plots
TDirectory *dir = (TDirectory*) f->FindObjectAny(iDirName);
dir->cd();
sprintf(name,"P_E2vsE1Cut%i",i);
TProfile *p1=(TProfile*)dir->FindObjectAny(name);
sprintf(name,"E2vsE1Cut%i",i);
h2=(TH2D*)dir->FindObjectAny(name);
Hlist2.Add(p1);
Hlist2.Add(h2);
TCanvas *c_ieta=new TCanvas(iDirName,iDirName,1000,1000);
h2->Draw("colz");
h2->GetXaxis()->SetTitle("E in long(GeV)");
h2->GetYaxis()->SetTitle("E in short(GeV)");
c_ieta->SetLogz();
sprintf(name_pdf,"%s.pdf(",iDirName);
sprintf(title,"Title:2D_E2vsE1");
c_ieta->Print(name_pdf,title);
p1->Draw();
p1->GetXaxis()->SetTitle("E in long(GeV)");
p1->GetYaxis()->SetTitle("E in short(GeV)");
sprintf(name_pdf,"%s.pdf",iDirName);
sprintf(title,"Title:P_E2vsE1");
c_ieta->Print(name_pdf,title);
for(int j=0;j<nietaHF;j++){
//for(int j=16;j<17;j++){
int ieta;
if(j<13)
ieta=j+29;
else
ieta=-(j+16);
if(ieta<0){sprintf(name,"E2E1_ietaN%i",abs(ieta));}
else{sprintf(name,"E2E1_ietaP%i",ieta);}
h2=(TH2D*)dir->FindObjectAny(name);
Hlist2.Add(h2);
if(ieta<0){sprintf(name,"E2E1Prof_ietaN%i",abs(ieta));}
else{sprintf(name,"E2E1Prof_ietaP%i",ieta);}
p1=(TProfile*)dir->FindObjectAny(name);
Hlist2.Add(p1);
ProfileFit(p1);
TGraphErrors *GrError=new TGraphErrors(E1.size(),&(E1[0]),&(E2[0]),&(dE1[0]),&(dE2[0]));
sprintf(title,"E2vsE1 for ieta=%i",ieta);
GrError->SetTitle(title);
TF1 *ft=new TF1("ft","pol1");
ft->SetLineColor(fitlinecolor);
GrError->Fit("ft");
gStyle->SetOptFit(101);
GrError->SetLineColor(fitlinecolor);
sprintf(name,"E2vsE1_ieta_%i",ieta);
GrError->Draw("AP");
//ft->SetLineColor(fitlinecolor);
GrError->GetXaxis()->SetTitle("E in long(GeV)");
GrError->GetYaxis()->SetTitle("E in short(GeV)");
sprintf(title,"Title:ieta:%i iphi INC",ieta);
if(j<(nietaHF-1)){
sprintf(name_pdf,"%s.pdf",iDirName);
c_ieta->Print(name_pdf,title);
}
else if(j==(nietaHF-1)){
sprintf(name_pdf,"%s.pdf)",iDirName);
c_ieta->Print(name_pdf,title);
}
Hlist2.Add(GrError);
// Ratio vs Elong Plots------------------------------------------
sprintf(iDirNameRatio,"E1E2Cut%iRatio",i);
TDirectory *dirRatio = (TDirectory*) f->FindObjectAny(iDirNameRatio);
if(ieta<0){sprintf(name,"P_RatiovsElong_ietaN%i",abs(ieta));}
else{sprintf(name,"P_RatiovsElong_ietaP%i",ieta);}
TProfile *p_ratio=(TProfile*)dirRatio->FindObjectAny(name);
//TCanvas *canva=new TCanvas("ratio","ratio",500,500);
//p_ratio->Draw();
ProfileFit(p_ratio);
TGraphErrors *GrErrorRatio=new TGraphErrors(E1.size(),&(E1[0]),&(E2[0]),&(dE1[0]),&(dE2[0]));
sprintf(title,"RatiovsE1 for ieta=%i",ieta);
GrErrorRatio->SetTitle(title);
TF1 *ft_ratio=new TF1("ft_ratio","pol0");
ft_ratio->SetLineColor(fitlinecolor);
GrErrorRatio->Fit("ft_ratio");
GrErrorRatio->Draw();
GrErrorRatio->GetXaxis()->SetTitle("E in long(GeV)");
GrErrorRatio->GetYaxis()->SetTitle("Ratio");
gStyle->SetOptFit(101);
HlistRatio.Add(GrErrorRatio);
//---------------------------------------------------------------
//TF1 *ft = new TF1("ft","[0]+[1]*x");
// p1->Fit("ft");
// }
for(int k=0;k<niphiHF;k++){
}
// cout<<"************************************************************************"<<endl;
}
sprintf(oDirName,"E1E2Cut%iIeta",i);
fout->cd(oDirName);
Hlist2.Write();
sprintf(oDirName,"RatiovsE1_ECut%iIeta",i);
fout->cd(oDirName);
HlistRatio.Write();
}
fout->cd();
Hlist.Write();
}
void ProfileFit(TProfile *p){
//TF1 *f1 = new TF1("f1","[0]+[1]*x");
//p->Fit("f1");
//cout<<endl<<"chi2:"<<f1->GetChisquare();
//vector<double> E1,E2,dE1,dE2;
E1.resize(0);
E2.resize(0);
dE1.resize(0);
dE2.resize(0);
int nbins=p->GetNbinsX();
//cout<<"**************\n size:"<<E1.size()<<E2.size()<<dE1.size()<<dE2.size()<<endl;
for(int i=0;i<nbins;i++){
if((p->GetBinEntries(i))>=minEntryPerBin){
E1.push_back(p->GetBinCenter(i));
E2.push_back(p->GetBinContent(i));
dE1.push_back((p->GetBinWidth(i))/2);
dE2.push_back(p->GetBinError(i));
// if(ieta==-32)
//cout<<"p->GetBinEntries(i):"<<p->GetBinEntries(i)<<" p->GetBinCenter(i):"<<p->GetBinCenter(i)<<" p->GetBinContent(i)):"<<p->GetBinContent(i)<<" p->GetBinWidth(i):"<<p->GetBinWidth(i)<<" p->GetBinError(i):"<<p->GetBinError(i)<<endl;
}
}
//cout<<"**************\n size later:"<<E1.size()<<E2.size()<<dE1.size()<<dE2.size()<<endl;
}
void hist1D(TH1D *h){
}
/* if(ieta==41 && iphi==47){
// ProfileFit(p1);
Hlist.Add(p1);
ssh -Y [email protected]
exit
rm crab.log
logout
exit
cout<<"***********"<<p1->GetNbinsX()<<endl;
cout<<"bin entries:"<<endl<<endl<<endl<<p1->GetBinEntries(76)<<endl<<p1->GetBinEntries(103)<<endl<<p1->GetBinEntries(104)<<endl<<"------\n\n\n\n"<<p1->GetBinContent(76)<<endl<<p1->GetBinContent(103)<<endl<<p1->GetBinContent(104)<<endl<<p1->GetBinError(104)<<"\t";
for(int k=1;k<=p1->GetNbinsX();k++){
if(p1->GetBinEntries(k)<5){
p1->SetBinEntries(k,0);
}
}
}*/