00001 #include <iostream>
00002 #include <fstream>
00003 #include <iomanip>
00004 #include <cstring>
00005 #include <string>
00006 #include <vector>
00007 #include <TFile.h>
00008 #include <TTree.h>
00009 #include <TString.h>
00010 #include <TH1F.h>
00011 #include <TKey.h>
00012
00013 using namespace std;
00014
00015 int main(int argc, char *argv[]){
00016 if(argc<3){
00017 cout << "please append a root file name and threshod numbers" << endl;
00018 cout << "Ex. check_hist_ent.exe test.root 1000" << endl;
00019 return 1;
00020 }
00021
00022 TString str_root_file(argv[1]);
00023 TFile f(str_root_file);
00024 TList *l = f.GetListOfKeys();
00025 double m_min(99999), m_max(0), m_total(0), m_ave(0), m_size(0);
00026 Int_t m_temp;
00027 Int_t m_thres;
00028 TH1F *h(0);
00029 sscanf(argv[2], "%d", &m_thres);
00030 TIter next(l);
00031 TKey *obj(0);
00032 while ((obj = (TKey*)next())){
00033 TString str_temp(obj->GetClassName());
00034 if(str_temp.Contains("TTree")) continue;
00035 m_size += 1;
00036 h = (TH1F*)f.Get(obj->GetName());
00037 m_temp = h->GetEntries();
00038 m_total += m_temp;
00039 if(m_temp<m_min) m_min = m_temp;
00040 if(m_temp>m_max) m_max = m_temp;
00041 if(m_temp<m_thres) cout << h->GetName() << " has entries " << m_temp << " less than threshod" << endl;
00042 }
00043 m_ave = m_total/m_size;
00044 cout << "min: " << m_min << " max: " << m_max << " ave: " << m_ave << " size: " << m_size << endl;
00045 return 0;
00046 }
