JTestChi2_Bin.hh

Go to the documentation of this file.

#ifndef __JTESTCHI2_BIN__
#define __JTESTCHI2_BIN__

#include <iostream>
#include "JTest_t.hh"
#include "JTestChi2_t.hh"

using namespace std;

/*
 * \author rgruiz
 */

/*
 * Bin-by-Bin chi2 test.
 */
class JTestChi2_Bin: 
  public JTest_t,
  public JTestChi2_t
{ 
public:  
  /*
   * Default constructor.
   */
  JTestChi2_Bin(){}
  
  /*
   * Read test parameters from input.
   *
   * \param  in            input stream
   * \return               input stream
   */
  std::istream& read(std::istream& in) { 
    return in >> outliersThreshold >> chi2Threshold;
  };

  /*
   * Write test result to output.
   *
   * \param  out           output stream
   * \return               output stream
   */
  std::ostream& write(std::ostream& out) {
    for (vector<JTestResult>::const_iterator r = results.begin() ; r != results.end() ; ++r) {
      out << scientific << setprecision(2) << (r->passed ? GREEN : RED) << r->message << endl;
    }
    return out;
  };

  /*
   * Tests the statistical compatibility of two ROOT 2D histograms
   * 
   * \param o1 First histogram
   * \param o2 Second histogram
   *
   * \return Test result
   */
  void test(TObject* o1, TObject* o2) {    
    
    if (!(dynamic_cast<TH2*>(o1) == NULL) && !(dynamic_cast<TH2*>(o2) == NULL)) {
                  
      TH2D* h1 = dynamic_cast<TH2D*>(o1);
      TH2D* h2 = dynamic_cast<TH2D*>(o2);
      
      JTestResult r = JChi2TestBin_2D(h1, h2, outliersThreshold, chi2Threshold);
      results.push_back(r);
    }
  };
  
  /*
   * Writes the result to root file
   * \param f The file 
   * \param path Path in root file.
   */
  virtual void save(TFile* f , string path){
    
    for (vector<JTestResult>::const_iterator r = results.begin() ; r != results.end() ; ++r){
            
      if (f -> GetDirectory(path.c_str())==0) f->mkdir(path.c_str());
      f->cd(path.c_str());
      r->obj->Write();
    }
  }

  /*
   * Clear results
   */
  void clear(){
    results.clear();
  }

private:
  double chi2Threshold;     //!< threshold p-value to decide if test is passed for a bin.
  double outliersThreshold; //!< number of bins allowed to fail the test.
}; 
  
#endif