TFCS1DFunction.cxx File Reference

#include "ISF_FastCaloSimEvent/TFCS1DFunction.h"
#include "TH1.h"
#include "TCanvas.h"
#include "TRandom.h"
#include <string>
#include <iostream>
#include <cmath>

Include dependency graph for TFCS1DFunction.cxx:

Go to the source code of this file.

Functions
TH1 *TFCS1DFunction::generate_histogram_random_slope	ATLAS_NOT_THREAD_SAFE (int nbinsx, double xmin, double xmax, double zerothreshold)
TH1 *TFCS1DFunction::generate_histogram_random_gauss	ATLAS_NOT_THREAD_SAFE (int nbinsx, int ntoy, double xmin, double xmax, double xpeak, double sigma)
void TFCS1DFunction::unit_test	ATLAS_NOT_THREAD_SAFE (TH1 *hist, TFCS1DFunction *rtof, int nrnd, TH1 *histfine)

Function Documentation

ATLAS_NOT_THREAD_SAFE() [1/3]

TH1 *TFCS1DFunction::generate_histogram_random_slope ATLAS_NOT_THREAD_SAFE	(	int	nbinsx,
		double	xmin,
		double	xmax,
		double	zerothreshold )

Definition at line 98 of file TFCS1DFunction.cxx.

                                            {
  TH1 *hist = new TH1D("test_slope1D", "test_slope1D", nbinsx, xmin, xmax);
  hist->Sumw2();
  for (int ix = 1; ix <= nbinsx; ++ix) {
    double val = (0.5 + gRandom->Rndm()) * (nbinsx + ix);
    if (gRandom->Rndm() < zerothreshold)
      val = 0;
    hist->SetBinContent(ix, val);
    hist->SetBinError(ix, 0);
  }
  return hist;
}

ATLAS_NOT_THREAD_SAFE() [2/3]

TH1 *TFCS1DFunction::generate_histogram_random_gauss ATLAS_NOT_THREAD_SAFE	(	int	nbinsx,
		int	ntoy,
		double	xmin,
		double	xmax,
		double	xpeak,
		double	sigma )

Definition at line 113 of file TFCS1DFunction.cxx.

                                                  {
  TH1 *hist = new TH1D("test_gauss1D", "test_gauss1D", nbinsx, xmin, xmax);
  hist->Sumw2();
  for (int i = 1; i <= ntoy; ++i) {
    double x = gRandom->Gaus(xpeak, sigma);
    if (x >= xmin && x < xmax)
      hist->Fill(x);
  }
  return hist;
}

ATLAS_NOT_THREAD_SAFE() [3/3]

void TFCS1DFunction::unit_test ATLAS_NOT_THREAD_SAFE	(	TH1 *	hist,
		TFCS1DFunction *	rtof,
		int	nrnd,
		TH1 *	histfine )

Definition at line 125 of file TFCS1DFunction.cxx.

                                                                              {
  ISF_FCS::MLogging logger;
  ATH_MSG_NOCLASS(logger, "========= " << hist->GetName() << " funcsize="
                                       << rtof->MemorySize() << " ========");
  int nbinsx = hist->GetNbinsX();
  double integral = hist->Integral();
 
  float value[2];
  float rnd[2];
  //cppcheck-suppress uninitvar
  for (rnd[0] = 0; rnd[0] < 0.9999; rnd[0] += 0.25) {
    rtof->rnd_to_fct(value, rnd);
    ATH_MSG_NOCLASS(logger, "rnd0=" << rnd[0] << " -> x=" << value[0]);
  }
 
  TH1 *hist_val = nullptr;
  if (histfine)
    hist_val = (TH1 *)histfine->Clone(TString(hist->GetName()) + "hist_val");
  else
    hist_val = (TH1 *)hist->Clone(TString(hist->GetName()) + "hist_val");
  double weightfine = hist_val->Integral() / nrnd;
  hist_val->SetTitle("toy simulation");
  hist_val->Reset();
  hist_val->SetLineColor(2);
  hist_val->Sumw2();
 
  TH1 *hist_diff = (TH1 *)hist->Clone(TString(hist->GetName()) + "_difference");
  hist_diff->SetTitle("cut efficiency difference");
  hist_diff->Reset();
  hist_diff->Sumw2();
 
  double weight = integral / nrnd;
  for (int i = 0; i < nrnd; ++i) {
    rnd[0] = gRandom->Rndm();
    rtof->rnd_to_fct(value, rnd);
    hist_val->Fill(value[0], weightfine);
    hist_diff->Fill(value[0], weight);
  }
  hist_diff->Add(hist, -1);
  hist_diff->Scale(1.0 / integral);
 
  TH1F *hist_pull =
      new TH1F(TString(hist->GetName()) + "_pull", "pull", 200, -10, 10);
  for (int ix = 1; ix <= nbinsx; ++ix) {
    float val = hist_diff->GetBinContent(ix);
    float err = hist_diff->GetBinError(ix);
    if (err > 0)
      hist_pull->Fill(val / err);
  }
 
// Screen output in athena won't make sense and would require linking of
// additional libraries
#if defined(__FastCaloSimStandAlone__)
  TCanvas *c = new TCanvas(hist->GetName(), hist->GetName());
  c->Divide(2, 2);
 
  c->cd(1);
  if (histfine) {
    histfine->SetLineColor(kGray);
    histfine->DrawClone("hist");
    hist->DrawClone("same");
  } else {
    hist->DrawClone();
  }
  hist_val->DrawClone("sameshist");
 
  c->cd(2);
  if (histfine) {
    histfine->SetLineColor(kGray);
    histfine->DrawClone("hist");
    hist->DrawClone("same");
  } else {
    hist->DrawClone();
  }
  hist_val->DrawClone("sameshist");
  gPad->SetLogy();
 
  c->cd(3);
  hist_diff->Draw();
 
  c->cd(4);
  hist_pull->Draw();
 
  c->SaveAs(".png");
#endif
}