JTestSignificance_1D.hh

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#ifndef __JCOMPAREHISTOGRAMS__JTESTSIGNIFICANCE_1D__
#define __JCOMPAREHISTOGRAMS__JTESTSIGNIFICANCE_1D__

#include <istream>
#include <ostream>
#include "JCompareHistograms/JTest_t.hh"
#include "JCompareHistograms/JTestSignificance_t.hh"


/**
 * \author bofearraigh
 * \author rgruiz
 */
namespace JCOMPAREHISTOGRAMS {

  /**
   * Significance test applied to 1D histograms
   */
  class JTestSignificance_1D: 
    public JTest_t, 
    public JTestSignificance_t
  { 
  public:  

    /**
     * Default constructor.
     */
    JTestSignificance_1D() :
      JTest_t("Significance_1D", "Significance"),
      JTestSignificance_t()
    {}

    /**
     * Read test parameters from input.
     *
     * \param  in            input stream
     * \return               input stream
     */
    std::istream& read(std::istream& in) override{ 
      return in >> threshold >> K;
    };
    
    /**
     * Applies Significance test for two ROOT TH1 histograms.
     * 
     * \param o1 First histogram
     * \param o2 Second histogram
     */
    void test(TObject* o1, TObject* o2) override{    

      using namespace std;
    
      if (!(dynamic_cast<TH2*>(o1) == NULL) || !(dynamic_cast<TH2*>(o2) == NULL)) {
        ERROR("For 2D histograms call JTestSignificance_2D: " << o1->GetName() << endl);
    
      } else if (!(dynamic_cast<TH1*>(o1) == NULL) && !(dynamic_cast<TH1*>(o2) == NULL)) {
                  
        TH1D* h1 =  dynamic_cast<TH1D*>(o1);
        TH1D* h2 =  dynamic_cast<TH1D*>(o2);
  
        if (h1 -> GetNbinsX() != h2 -> GetNbinsX())
          ERROR("Histograms with different bining. The objects: " << h1 -> GetName() << " can not be compared." << endl);

        if (K<0)
          K = h2->GetEntries()/h1->GetEntries();
      
        JTestResult r = JSignificanceTest<TH1D>(h1, h2, threshold, K, testName, resultType);
     
        results.push_back(r);
      }
    };
  
  private:
    double threshold;                        //!< threshold p-value to decide if test is passed.
    double K;                                //!< normalization factor between histograms.
  };
}

#endif