TFCS2DFunctionHistogram.cxx File Reference

#include "ISF_FastCaloSimEvent/TFCS2DFunctionHistogram.h"
#include <algorithm>
#include <iostream>
#include "TMath.h"
#include "TCanvas.h"
#include "TH2F.h"
#include "TRandom.h"
#include "TFile.h"

Include dependency graph for TFCS2DFunctionHistogram.cxx:

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Functions
void TFCS2DFunctionHistogram::unit_test	ATLAS_NOT_THREAD_SAFE (TH2 *hist)

Function Documentation

ATLAS_NOT_THREAD_SAFE()

void TFCS2DFunctionHistogram::unit_test ATLAS_NOT_THREAD_SAFE

(

TH2 *

hist

)

Definition at line 102 of file TFCS2DFunctionHistogram.cxx.

                                                                       {
  ISF_FCS::MLogging logger;
  int nbinsx;
  int nbinsy;
  if (hist == nullptr) {
    //    hist=new TH2F("test2D","test2D",5,0,5,5,0,10);
    nbinsx = 64;
    nbinsy = 64;
    hist = new TH2F("test2D", "test2D", nbinsx, 0, 1, nbinsy, 0, 1);
    hist->Sumw2();
    for (int ix = 1; ix <= nbinsx; ++ix) {
      for (int iy = 1; iy <= nbinsy; ++iy) {
        hist->SetBinContent(ix, iy,
                            (0.5 + gRandom->Rndm()) * (nbinsx + ix) *
                                (nbinsy * nbinsy / 2 + iy * iy));
        if (gRandom->Rndm() < 0.1)
          hist->SetBinContent(ix, iy, 0);
        hist->SetBinError(ix, iy, 0);
      }
    }
  }
  TFCS2DFunctionHistogram rtof(hist);
  nbinsx = hist->GetNbinsX();
  nbinsy = hist->GetNbinsY();
 
  float value[2];
  float rnd[2];
  //cppcheck-suppress uninitvar
  for (rnd[0] = 0; rnd[0] < 0.9999; rnd[0] += 0.25) {
    for (rnd[1] = 0; rnd[1] < 0.9999; rnd[1] += 0.25) {
      rtof.rnd_to_fct(value, rnd);
      ATH_MSG_NOCLASS(logger, "rnd0=" << rnd[0] << " rnd1=" << rnd[1]
                                      << " -> x=" << value[0]
                                      << " y=" << value[1]);
    }
  }
 
  //  TH2F* hist_val=new
  //  TH2F("val2D","val2D",16,hist->GetXaxis()->GetXmin(),hist->GetXaxis()->GetXmax(),
  //                                          16,hist->GetYaxis()->GetXmin(),hist->GetYaxis()->GetXmax());
  TH2F *hist_val = (TH2F *)hist->Clone("hist_val");
  hist_val->Reset();
  int nrnd = 100000000;
  float weight = hist->Integral() / nrnd;
  hist_val->Sumw2();
  for (int i = 0; i < nrnd; ++i) {
    rnd[0] = gRandom->Rndm();
    rnd[1] = gRandom->Rndm();
    rtof.rnd_to_fct(value, rnd);
    hist_val->Fill(value[0], value[1], weight);
  }
  hist_val->Add(hist, -1);
 
  TH1F *hist_pull = new TH1F("pull", "pull", 80, -4, 4);
  for (int ix = 1; ix <= nbinsx; ++ix) {
    for (int iy = 1; iy <= nbinsy; ++iy) {
      float val = hist_val->GetBinContent(ix, iy);
      float err = hist_val->GetBinError(ix, iy);
      if (err > 0)
        hist_pull->Fill(val / err);
      ATH_MSG_NOCLASS(logger, "val=" << val << " err=" << err);
    }
  }
 
  std::unique_ptr<TFile> outputfile(
      TFile::Open("TFCS2DFunctionHistogram_unit_test.root", "RECREATE"));
  if (outputfile != nullptr) {
    hist->Write();
    hist_val->Write();
    hist_pull->Write();
    outputfile->ls();
    outputfile->Close();
  }
 
// Screen output in athena won't make sense and would require linking of
// additional libraries
#if defined(__FastCaloSimStandAlone__)
  new TCanvas("input", "Input");
  hist->Draw("colz");
 
  new TCanvas("validation", "Validation");
  hist_val->Draw("colz");
 
  new TCanvas("pull", "Pull");
  hist_pull->Draw();
#endif
}