1 | /* ======================================================================== *\
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2 | !
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3 | ! *
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4 | ! * This file is part of MARS, the MAGIC Analysis and Reconstruction
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5 | ! * Software. It is distributed to you in the hope that it can be a useful
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6 | ! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
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7 | ! * It is distributed WITHOUT ANY WARRANTY.
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8 | ! *
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9 | ! * Permission to use, copy, modify and distribute this software and its
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10 | ! * documentation for any purpose is hereby granted without fee,
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11 | ! * provided that the above copyright notice appear in all copies and
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12 | ! * that both that copyright notice and this permission notice appear
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13 | ! * in supporting documentation. It is provided "as is" without express
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14 | ! * or implied warranty.
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15 | ! *
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16 | !
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17 | !
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18 | ! Author(s): Thomas Bretz, 5/2002 <mailto:tbretz@astro.uni-wuerzburg.de>
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19 | ! Author(s): Abelardo Moralejo <mailto:moralejo@pd.infn.it>
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20 | !
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21 | ! Copyright: MAGIC Software Development, 2000-2003
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22 | !
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23 | !
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24 | \* ======================================================================== */
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25 |
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26 | /////////////////////////////////////////////////////////////////////////////
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27 | //
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28 | // MHHadronness
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29 | //
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30 | // This is histogram is a way to evaluate the quality of a gamma/hadron
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31 | // seperation method. It is filled from a MHadronness container, which
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32 | // stores a hadroness for the current event. The Value must be in the
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33 | // range [0,1]. To fill the histograms correctly the information
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34 | // whether it is a gamma or hadron (not a gamma) must be available from
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35 | // a MMcEvt container.
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36 | //
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37 | // In the constructor you can change the number of used bns for the
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38 | // evaluation.
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39 | //
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40 | // The meaning of the histograms (Draw, DrawClone) are the following:
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41 | // * Upper Left Corner:
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42 | // - black: histogram of all hadronesses for gammas
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43 | // - red: histogram of all hadronesses for non gammas
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44 | // * Upper Right Corner:
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45 | // - black: acceptance of gammas (Ag) vs. the hadroness
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46 | // - red: acceptance of non gammas (Ah) vs. the hadroness
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47 | // * Bottom Left Corner:
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48 | // Naive quality factor: Ag/sqrt(Ah)
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49 | // * Bottom Right Corner:
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50 | // - black: Acceprtance Gammas vs. Acceptance Hadrons
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51 | // - blue cross: minimum of distance to (0, 1)
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52 | //
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53 | // As a default MHHadronness searches for the container "MHadronness".
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54 | // This can be overwritten by a different pointer specified in the
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55 | // Fill function (No type check is done!) Use a different name in
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56 | // MFillH.
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57 | //
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58 | ////////////////////////////////////////////////////////////////////////////
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59 | #include "MHHadronness.h"
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60 |
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61 | #include <TPad.h>
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62 | #include <TGraph.h>
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63 | #include <TStyle.h>
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64 | #include <TCanvas.h>
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65 | #include <TMarker.h>
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66 |
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67 | #include "MLog.h"
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68 | #include "MLogManip.h"
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69 |
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70 | #include "MParList.h"
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71 | #include "MBinning.h"
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72 | #include "MHadronness.h"
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73 |
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74 | #include "MMcEvt.hxx"
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75 |
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76 | ClassImp(MHHadronness);
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77 |
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78 | // --------------------------------------------------------------------------
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79 | //
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80 | // Setup histograms, nbins is the number of bins used for the evaluation.
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81 | // The default is 100 bins.
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82 | //
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83 | MHHadronness::MHHadronness(Int_t nbins, const char *name, const char *title)
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84 | {
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85 | //
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86 | // set the name and title of this object
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87 | //
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88 | fName = name ? name : "MHHadronness";
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89 | fTitle = title ? title : "Gamma/Hadron Separation Quality Histograms";
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90 |
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91 | fGraph = new TGraph;
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92 | fGraph->SetTitle("Acceptance Gammas vs. Hadrons");
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93 | fGraph->SetMaximum(1);
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94 |
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95 | fGhness = new TH1D("Ghness", "Hadronness", nbins, 0, 1);
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96 | fPhness = new TH1D("Phness", "Hadronness", nbins, 0, 1);
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97 | fGhness->SetXTitle("Hadronness");
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98 | fPhness->SetXTitle("Hadronness");
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99 | fGhness->SetYTitle("Counts");
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100 | fPhness->SetYTitle("Counts");
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101 |
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102 | fIntGhness = new TH1D("AccGammas", "Acceptance", nbins, 0, 1);
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103 | fIntPhness = new TH1D("AccHadrons", "Acceptance", nbins, 0, 1);
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104 | fIntGhness->SetXTitle("Hadronness");
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105 | fIntPhness->SetXTitle("Hadronness");
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106 | fIntGhness->SetYTitle("Acceptance");
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107 | fIntPhness->SetYTitle("Acceptance");
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108 |
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109 | fQfac = new TGraph;
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110 | fQfac->SetTitle(" Naive Quality factor ");
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111 |
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112 | fGhness->SetDirectory(NULL);
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113 | fPhness->SetDirectory(NULL);
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114 | fIntGhness->SetDirectory(NULL);
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115 | fIntPhness->SetDirectory(NULL);
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116 | }
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117 |
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118 | // --------------------------------------------------------------------------
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119 | //
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120 | // Delete the histograms.
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121 | //
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122 | MHHadronness::~MHHadronness()
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123 | {
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124 | delete fGhness;
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125 | delete fIntGhness;
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126 | delete fPhness;
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127 | delete fIntPhness;
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128 | delete fQfac;
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129 | delete fGraph;
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130 | }
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131 |
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132 | // --------------------------------------------------------------------------
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133 | //
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134 | // Setup Filling of the histograms. It needs:
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135 | // MMcEvt and MHadronness
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136 | //
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137 | Bool_t MHHadronness::SetupFill(const MParList *plist)
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138 | {
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139 | fMcEvt = (MMcEvt*)plist->FindObject("MMcEvt");
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140 | if (!fMcEvt)
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141 | {
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142 | *fLog << err << dbginf << "MMcEvt not found... aborting." << endl;
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143 | return kFALSE;
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144 | }
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145 |
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146 | fHadronness = (MHadronness*)plist->FindObject("MHadronness");
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147 |
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148 | /*
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149 | MBinning* bins = (MBinning*)plist->FindObject("BinningHadronness");
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150 | if (!bins)
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151 | {
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152 | *fLog << err << dbginf << "BinningHadronness [MBinning] not found... aborting." << endl;
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153 | return kFALSE;
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154 | }
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155 |
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156 | SetBinning(&fHist, binsalpha, binsenergy, binstheta);
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157 |
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158 | fHist.Sumw2();
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159 | */
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160 |
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161 | return kTRUE;
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162 | }
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163 |
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164 | // --------------------------------------------------------------------------
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165 | //
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166 | // Fill the Hadronness from a MHadronness container into the corresponding
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167 | // histogram dependant on the particle id.
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168 | //
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169 | // Every particle Id different than kGAMMA is considered a hadron.
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170 | //
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171 | // If you call Fill with a pointer (eg. from MFillH) this container is
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172 | // used as a hadronness (Warning: No type check is done!) otherwise
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173 | // the default is used ("MHadronness")
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174 | //
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175 | // Sometimes a distance is calculated as NaN (not a number). Such events
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176 | // are skipped at the moment.
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177 | //
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178 | Bool_t MHHadronness::Fill(const MParContainer *par)
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179 | {
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180 | // Preliminary Workaround: FIXME!
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181 | if (!par && !fHadronness)
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182 | {
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183 | *fLog << err << "MHHadronness::Fill: No MHadronness container specified!" << endl;
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184 | return kFALSE;
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185 | }
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186 |
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187 | const MHadronness &had = par ? *(MHadronness*)par : *fHadronness;
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188 |
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189 | const Double_t h = had.GetHadronness();
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190 |
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191 | if (TMath::IsNaN(h))
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192 | return kCONTINUE;
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193 |
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194 | if (fMcEvt->GetPartId()==kGAMMA)
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195 | fGhness->Fill(h);
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196 | else
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197 | fPhness->Fill(h);
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198 |
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199 | return kTRUE;
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200 | }
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201 |
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202 | Float_t MHHadronness::GetQ05() const
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203 | {
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204 | Int_t n = fQfac->GetN();
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205 |
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206 | Double_t val1x=0;
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207 | Double_t val2x=1;
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208 |
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209 | Double_t val1y=0;
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210 | Double_t val2y=0;
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211 |
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212 | for (Int_t i=1; i<=n; i++)
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213 | {
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214 | Double_t x, y;
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215 |
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216 | fQfac->GetPoint(i, x, y);
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217 |
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218 | if (x<0.5 && x>val1x)
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219 | {
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220 | val1x = x;
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221 | val1y = y;
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222 | }
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223 |
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224 | if (x>0.5 && x<val2x)
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225 | {
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226 | val2x = x;
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227 | val2y = y;
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228 | }
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229 | }
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230 |
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231 | return val2x-val1x == 0 ? 0 : val1y - (val2y-val1y)/(val2x-val1x) * (val1x-0.5);
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232 | }
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233 |
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234 | // --------------------------------------------------------------------------
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235 | //
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236 | // Finalize the histograms:
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237 | // - integrate the hadroness histograms --> acceptance
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238 | // - fill the Minimum Distance histogram (formular see class description)
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239 | // - fill the Quality histogram (formular see class description)
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240 | //
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241 | Bool_t MHHadronness::Finalize()
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242 | {
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243 | Int_t n = fGhness->GetNbinsX();
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244 |
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245 | fGraph->Set(n);
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246 | fQfac->Set(n);
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247 |
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248 | const Stat_t sumg = fGhness->Integral();
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249 | const Stat_t sump = fPhness->Integral();
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250 |
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251 | *fLog << inf << "MHHadronness::Finalize - Sum Hadronness: gammas=" << sumg << " hadrons=" << sump << endl;
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252 |
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253 | if (sumg==0 || sump==0)
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254 | *fLog << warn << "MHHadronness::Finalize: Cannot calculate hadronness." << endl;
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255 |
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256 |
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257 | // Normalize photon distribution
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258 | if (sumg>0)
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259 | fGhness->Scale(1./sumg);
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260 |
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261 | // Normalize hadron distribution
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262 | if (sump>0)
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263 | fGhness->Scale(1./sump);
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264 |
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265 | // Calculate acceptances
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266 | Float_t max=0;
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267 |
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268 | for (Int_t i=1; i<=n; i++)
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269 | {
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270 | const Stat_t ip = sump!=0 ? fPhness->Integral(1, i)/sump : 0;
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271 | const Stat_t ig = sumg!=0 ? fGhness->Integral(1, i)/sumg : 0;
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272 |
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273 | fIntPhness->SetBinContent(i, ip);
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274 | fIntGhness->SetBinContent(i, ig);
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275 |
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276 | fGraph->SetPoint(i, ip, ig);
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277 |
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278 | if (ip<=0)
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279 | continue;
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280 |
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281 | const Double_t val = ig/sqrt(ip);
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282 | fQfac->SetPoint(i, ig, val);
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283 |
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284 | if (val>max)
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285 | max = val;
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286 | }
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287 |
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288 | fQfac->SetMaximum(max*1.05);
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289 |
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290 | return kTRUE;
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291 | }
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292 |
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293 | // --------------------------------------------------------------------------
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294 | //
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295 | // Search the corresponding points for the given hadron acceptance (acchad)
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296 | // and interpolate the tow points (linear)
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297 | //
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298 | Double_t MHHadronness::GetGammaAcceptance(Double_t acchad) const
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299 | {
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300 | const Int_t n = fGraph->GetN();
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301 | const Double_t *x = fGraph->GetX();
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302 | const Double_t *y = fGraph->GetY();
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303 |
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304 | Int_t i = 0;
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305 | while (i<n && x[i]<acchad)
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306 | i++;
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307 |
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308 | if (i==0 || i==n)
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309 | return 0;
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310 |
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311 | if (i==n-1)
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312 | i--;
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313 |
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314 | const Double_t x1 = x[i-1];
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315 | const Double_t y1 = y[i-1];
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316 |
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317 | const Double_t x2 = x[i];
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318 | const Double_t y2 = y[i];
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319 |
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320 | return (y2-y1)/(x2-x1) * (acchad-x2) + y2;
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321 | }
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322 |
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323 | // --------------------------------------------------------------------------
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324 | //
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325 | // Search the corresponding points for the given gamma acceptance (accgam)
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326 | // and interpolate the tow points (linear)
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327 | //
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328 | Double_t MHHadronness::GetHadronAcceptance(Double_t accgam) const
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329 | {
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330 | const Int_t n = fGraph->GetN();
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331 | const Double_t *x = fGraph->GetX();
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332 | const Double_t *y = fGraph->GetY();
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333 |
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334 | Int_t i = 0;
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335 | while (i<n && y[i]<accgam)
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336 | i++;
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337 |
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338 | if (i==0 || i==n)
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339 | return 0;
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340 |
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341 | if (i==n-1)
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342 | i--;
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343 |
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344 | const Double_t x1 = y[i-1];
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345 | const Double_t y1 = x[i-1];
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346 |
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347 | const Double_t x2 = y[i];
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348 | const Double_t y2 = x[i];
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349 |
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350 | return (y2-y1)/(x2-x1) * (accgam-x2) + y2;
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351 | }
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352 |
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353 | // --------------------------------------------------------------------------
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354 | //
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355 | // Print the corresponding Gammas Acceptance for a hadron acceptance of
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356 | // 10%, 20%, 30%, 40% and 50%. Also the minimum distance to the optimum
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357 | // acceptance and the corresponding acceptances and hadroness value is
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358 | // printed, together with the maximum Q-factor.
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359 | //
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360 | void MHHadronness::Print(Option_t *) const
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361 | {
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362 | *fLog << all;
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363 | *fLog << "Hadronness histograms:" << endl;
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364 | *fLog << "---------------------" << endl;
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365 |
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366 | if (fGraph->GetN()==0)
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367 | {
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368 | *fLog << " <No Entries>" << endl;
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369 | return;
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370 | }
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371 |
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372 | *fLog << "Used " << fGhness->GetEntries() << " Gammas and " << fPhness->GetEntries() << " Hadrons." << endl;
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373 | *fLog << "acc(hadron) acc(gamma) acc(g)/acc(h)" << endl <<endl;
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374 |
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375 | *fLog << " 0.005 " << Form("%6.3f", GetGammaAcceptance(0.005)) << " " << Form("%6.3f", GetGammaAcceptance(0.005)/0.005) << endl;
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376 | *fLog << " 0.02 " << Form("%6.3f", GetGammaAcceptance(0.02)) << " " << Form("%6.3f", GetGammaAcceptance(0.02)/0.02) << endl;
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377 | *fLog << " 0.05 " << Form("%6.3f", GetGammaAcceptance(0.05)) << " " << Form("%6.3f", GetGammaAcceptance(0.05)/0.05) << endl;
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378 | *fLog << " 0.1 " << Form("%6.3f", GetGammaAcceptance(0.1 )) << " " << Form("%6.3f", GetGammaAcceptance(0.1)/0.1) << endl;
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379 | *fLog << " 0.2 " << Form("%6.3f", GetGammaAcceptance(0.2 )) << " " << Form("%6.3f", GetGammaAcceptance(0.2)/0.2) << endl;
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380 | *fLog << " 0.3 " << Form("%6.3f", GetGammaAcceptance(0.3 )) << " " << Form("%6.3f", GetGammaAcceptance(0.3)/0.3) << endl;
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381 | *fLog << Form("%6.3f", GetHadronAcceptance(0.1)) << " 0.1 " << endl;
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382 | *fLog << Form("%6.3f", GetHadronAcceptance(0.2)) << " 0.2 " << endl;
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383 | *fLog << Form("%6.3f", GetHadronAcceptance(0.3)) << " 0.3 " << endl;
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384 | *fLog << Form("%6.3f", GetHadronAcceptance(0.4)) << " 0.4 " << endl;
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385 | *fLog << Form("%6.3f", GetHadronAcceptance(0.5)) << " 0.5 " << endl;
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386 | *fLog << Form("%6.3f", GetHadronAcceptance(0.6)) << " 0.6 " << endl;
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387 | *fLog << Form("%6.3f", GetHadronAcceptance(0.7)) << " 0.7 " << endl;
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388 | *fLog << Form("%6.3f", GetHadronAcceptance(0.8)) << " 0.8 " << endl;
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389 | *fLog << endl;
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390 |
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391 | *fLog << "Q-Factor @ Acc Gammas=0.5: Q(0.5)=" << Form("%.1f", GetQ05()) << endl;
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392 | *fLog << " Acc Hadrons = " << Form("%5.1f", GetHadronAcceptance(0.5)*100) << "%" << endl;
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393 | *fLog << endl;
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394 | }
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395 |
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396 | // --------------------------------------------------------------------------
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397 | //
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398 | // Draw clone of all histograms. (For the Meaning see class description)
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399 | //
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400 | TObject *MHHadronness::DrawClone(Option_t *opt) const
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401 | {
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402 | if (fGraph->GetN()==0)
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403 | return NULL;
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404 |
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405 | TCanvas &c = *MakeDefCanvas("Hadronness", fTitle);
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406 | c.Divide(2, 2);
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407 |
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408 | gROOT->SetSelectedPad(NULL);
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409 |
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410 | c.cd(1);
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411 | //gStyle->SetOptStat(10);
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412 | Getghness()->DrawCopy();
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413 | Getphness()->SetLineColor(kRed);
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414 | Getphness()->DrawCopy("same");
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415 |
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416 | c.cd(2);
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417 | //gStyle->SetOptStat(0);
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418 | Getighness()->DrawCopy();
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419 | Getiphness()->SetLineColor(kRed);
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420 | Getiphness()->DrawCopy("same");
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421 |
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422 | c.cd(3);
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423 | TGraph &g2 = (TGraph&)*fQfac->DrawClone("A*");
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424 | g2.SetBit(kCanDelete);
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425 | gPad->Modified();
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426 | gPad->Update();
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427 | if (g2.GetHistogram())
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428 | {
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429 | g2.GetXaxis()->SetRangeUser(0, 1);
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430 | g2.GetXaxis()->SetTitle("Acceptance Gammas");
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431 | g2.GetYaxis()->SetTitle("Quality");
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432 | g2.SetMarkerStyle(kFullDotSmall);
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433 | g2.Draw("P");
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434 |
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435 | gPad->Modified();
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436 | gPad->Update();
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437 | }
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438 |
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439 | c.cd(4);
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440 | gPad->Modified();
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441 | gPad->Update();
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442 | TGraph &g = (TGraph&)*fGraph->DrawClone("AC");
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443 | g.SetBit(kCanDelete);
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444 | gPad->Modified();
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445 | gPad->Update();
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446 | if (g.GetHistogram())
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447 | {
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448 | g.GetXaxis()->SetRangeUser(0, 1);
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449 | g.GetXaxis()->SetTitle("Acceptance Hadrons");
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450 | g.GetYaxis()->SetTitle("Acceptance Gammas");
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451 | g.SetMarkerStyle(kFullDotSmall);
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452 | g.Draw("P");
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453 |
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454 | gPad->Modified();
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455 | gPad->Update();
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456 | }
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457 | /*
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458 | const Int_t h = fMinDist->GetMaximumBin();
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459 | TMarker *m = new TMarker(fIntPhness->GetBinContent(h),
|
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460 | fIntGhness->GetBinContent(h), kStar);
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461 | m->SetMarkerColor(kBlue);
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462 | m->SetBit(kCanDelete);
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463 | m->Draw();
|
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464 | */
|
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465 | return &c;
|
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466 | }
|
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467 |
|
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468 | // --------------------------------------------------------------------------
|
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469 | //
|
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470 | // Draw all histograms. (For the Meaning see class description)
|
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471 | //
|
---|
472 | void MHHadronness::Draw(Option_t *)
|
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473 | {
|
---|
474 | if (fGraph->GetN()==0)
|
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475 | return;
|
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476 |
|
---|
477 | if (!gPad)
|
---|
478 | MakeDefCanvas("Hadronness", fTitle);
|
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479 |
|
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480 | gPad->Divide(2, 2);
|
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481 |
|
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482 | gPad->cd(1);
|
---|
483 | //gStyle->SetOptStat(10);
|
---|
484 | Getghness()->Draw();
|
---|
485 | Getphness()->SetLineColor(kRed);
|
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486 | Getphness()->Draw("same");
|
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487 |
|
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488 | gPad->cd(2);
|
---|
489 | //gStyle->SetOptStat(0);
|
---|
490 | Getighness()->Draw();
|
---|
491 | Getiphness()->SetLineColor(kRed);
|
---|
492 | Getiphness()->Draw("same");
|
---|
493 |
|
---|
494 | gPad->cd(3);
|
---|
495 | fQfac->Draw("A*");
|
---|
496 | gPad->Modified();
|
---|
497 | gPad->Update();
|
---|
498 | if (fQfac->GetHistogram())
|
---|
499 | {
|
---|
500 | fQfac->GetXaxis()->SetRangeUser(0, 1);
|
---|
501 | fQfac->GetXaxis()->SetTitle("Acceptance Gammas");
|
---|
502 | fQfac->GetYaxis()->SetTitle("Quality");
|
---|
503 | fQfac->SetMarkerStyle(kFullDotSmall);
|
---|
504 | fQfac->Draw("P");
|
---|
505 |
|
---|
506 | gPad->Modified();
|
---|
507 | gPad->Update();
|
---|
508 | }
|
---|
509 | gPad->cd(4);
|
---|
510 | gPad->Modified();
|
---|
511 | gPad->Update();
|
---|
512 | fGraph->Draw("AC");
|
---|
513 | gPad->Modified();
|
---|
514 | gPad->Update();
|
---|
515 | if (fGraph->GetHistogram())
|
---|
516 | {
|
---|
517 | fGraph->GetXaxis()->SetRangeUser(0, 1);
|
---|
518 | fGraph->GetXaxis()->SetTitle("Acceptance Hadrons");
|
---|
519 | fGraph->GetYaxis()->SetTitle("Acceptance Gammas");
|
---|
520 | fGraph->SetMarkerStyle(kFullDotSmall);
|
---|
521 | fGraph->Draw("P");
|
---|
522 | gPad->Modified();
|
---|
523 | gPad->Update();
|
---|
524 | }
|
---|
525 | }
|
---|