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d655d7dd | 1 | /************************************************************************** |
2 | * This file is property of and copyright by * | |
3 | * the Relativistic Heavy Ion Group (RHIG), Yale University, US, 2009 * | |
4 | * * | |
5 | * Primary Author: Per Thomas Hille <p.t.hille@fys.uio.no> * | |
6 | * * | |
7 | * Contributors are mentioned in the code where appropriate. * | |
8 | * Please report bugs to p.t.hille@fys.uio.no * | |
9 | * * | |
10 | * Permission to use, copy, modify and distribute this software and its * | |
11 | * documentation strictly for non-commercial purposes is hereby granted * | |
12 | * without fee, provided that the above copyright notice appears in all * | |
13 | * copies and that both the copyright notice and this permission notice * | |
14 | * appear in the supporting documentation. The authors make no claims * | |
15 | * about the suitability of this software for any purpose. It is * | |
16 | * provided "as is" without express or implied warranty. * | |
17 | **************************************************************************/ | |
18 | ||
19 | ||
20 | // Extraction of amplitude and peak position | |
57839add | 21 | // FRom CALO raw data using |
d655d7dd | 22 | // least square fit for the |
23 | // Moment assuming identical and | |
24 | // independent errors (equivalent with chi square) | |
25 | // | |
26 | ||
57839add | 27 | #include "AliCaloRawAnalyzerLMS.h" |
28 | #include "AliCaloBunchInfo.h" | |
29 | #include "AliCaloFitResults.h" | |
d655d7dd | 30 | #include "AliLog.h" |
31 | #include "TMath.h" | |
507751ce | 32 | #include <stdexcept> |
d655d7dd | 33 | #include <iostream> |
34 | #include "TF1.h" | |
35 | #include "TGraph.h" | |
36 | ||
92d9f317 | 37 | |
d655d7dd | 38 | using namespace std; |
39 | ||
40 | ||
396baaf6 | 41 | //#define BAD 4 //CRAP PTH |
e37e3c84 | 42 | |
43 | ClassImp( AliCaloRawAnalyzerLMS ) | |
d655d7dd | 44 | |
45 | ||
396baaf6 | 46 | AliCaloRawAnalyzerLMS::AliCaloRawAnalyzerLMS() : AliCaloRawAnalyzerFitter("Chi Square Fit", "LMS") |
47 | // fkEulerSquared(7.389056098930650227), | |
48 | // fTf1(0) | |
49 | // fTau(2.35), | |
50 | // fFixTau(kTRUE) | |
d655d7dd | 51 | { |
168c7b3c | 52 | fAlgo = Algo::kLMS; |
d655d7dd | 53 | //comment |
396baaf6 | 54 | |
55 | /* | |
92d9f317 | 56 | for(int i=0; i < ALTROMAXSAMPLES; i++) |
d655d7dd | 57 | { |
58 | fXaxis[i] = i; | |
59 | } | |
396baaf6 | 60 | */ |
d655d7dd | 61 | |
396baaf6 | 62 | // fTf1 = new TF1( "myformula", "[0]*((x - [1])/[2])^2*exp(-2*(x -[1])/[2])", 0, 30 ); |
63 | ||
64 | ||
65 | /* | |
168c7b3c | 66 | if (fFixTau) |
67 | { | |
f57baa2d | 68 | fTf1->FixParameter(2, fTau); |
168c7b3c | 69 | } |
70 | else | |
71 | { | |
72 | fTf1->ReleaseParameter(2); // allow par. to vary | |
73 | fTf1->SetParameter(2, fTau); | |
74 | } | |
396baaf6 | 75 | */ |
d655d7dd | 76 | } |
77 | ||
78 | ||
57839add | 79 | AliCaloRawAnalyzerLMS::~AliCaloRawAnalyzerLMS() |
d655d7dd | 80 | { |
396baaf6 | 81 | // delete fTf1; |
d655d7dd | 82 | } |
83 | ||
84 | ||
396baaf6 | 85 | /* |
86 | void | |
87 | AliCaloRawAnalyzerLMS::InitFormula( TF1* f) | |
88 | { | |
89 | f = new TF1( "myformula", "[0]*((x - [1])/[2])^2*exp(-2*(x -[1])/[2])", 0, 30 ); | |
90 | } | |
91 | */ | |
d655d7dd | 92 | |
57839add | 93 | AliCaloFitResults |
94 | AliCaloRawAnalyzerLMS::Evaluate( const vector<AliCaloBunchInfo> &bunchvector, const UInt_t altrocfg1, const UInt_t altrocfg2 ) | |
d655d7dd | 95 | { |
96 | // Extracting signal parameters using fitting | |
97 | short maxampindex; //index of maximum amplitude | |
98 | short maxamp; //Maximum amplitude | |
99 | int index = SelectBunch( bunchvector, &maxampindex, &maxamp ); | |
100 | ||
101 | if( index >= 0) | |
102 | { | |
103 | Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed ); | |
d655d7dd | 104 | Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed ); |
f57baa2d | 105 | short maxrev = maxampindex - bunchvector.at(index).GetStartBin(); |
507751ce | 106 | // timebinOffset is timebin value at maximum (maxrev) |
f57baa2d | 107 | short timebinOffset = maxampindex - (bunchvector.at(index).GetLength()-1); |
2cd0ffda | 108 | if( maxf < fAmpCut || ( maxamp - ped) > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then) |
d655d7dd | 109 | { |
168c7b3c | 110 | return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, timebinOffset); |
2cd0ffda | 111 | } |
112 | else if ( maxf >= fAmpCut ) | |
113 | { | |
114 | int first = 0; | |
115 | int last = 0; | |
92d9f317 | 116 | SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev, &first, &last, fFitArrayCut); |
3b8fd9fe | 117 | int nsamples = last - first + 1; |
d655d7dd | 118 | |
f57baa2d | 119 | if( ( nsamples ) >= fNsampleCut ) |
d655d7dd | 120 | { |
507751ce | 121 | Float_t tmax = (maxrev - first); // local tmax estimate |
3b8fd9fe | 122 | TGraph *graph = new TGraph( nsamples, fXaxis, &fReversed[first] ); |
d655d7dd | 123 | fTf1->SetParameter(0, maxf*fkEulerSquared ); |
507751ce | 124 | fTf1->SetParameter(1, tmax - fTau); |
125 | // set rather loose parameter limits | |
126 | fTf1->SetParLimits(0, 0.5*maxf*fkEulerSquared, 2*maxf*fkEulerSquared ); | |
127 | fTf1->SetParLimits(1, tmax - fTau - 4, tmax - fTau + 4); | |
f57baa2d | 128 | |
129 | if (fFixTau) { | |
130 | fTf1->FixParameter(2, fTau); | |
131 | } | |
132 | else { | |
133 | fTf1->ReleaseParameter(2); // allow par. to vary | |
134 | fTf1->SetParameter(2, fTau); | |
135 | } | |
d655d7dd | 136 | |
507751ce | 137 | Short_t tmpStatus = 0; |
138 | try { | |
139 | tmpStatus = graph->Fit(fTf1, "Q0RW"); | |
140 | } | |
141 | catch (const std::exception & e) { | |
142 | AliError( Form("TGraph Fit exception %s", e.what()) ); | |
168c7b3c | 143 | return AliCaloFitResults( maxamp, ped, Ret::kNoFit, maxf, timebinOffset, |
144 | timebinOffset, Ret::kDummy, Ret::kDummy, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) ); | |
507751ce | 145 | } |
146 | ||
d655d7dd | 147 | if( fVerbose == true ) |
148 | { | |
57839add | 149 | AliCaloRawAnalyzer::PrintBunch( bunchvector.at(index) ); |
d655d7dd | 150 | PrintFitResult( fTf1 ) ; |
151 | } | |
507751ce | 152 | // global tmax |
153 | tmax = fTf1->GetParameter(1) + timebinOffset - (maxrev - first) // abs. t0 | |
154 | + fTf1->GetParameter(2); // +tau, makes sum tmax | |
d655d7dd | 155 | |
156 | delete graph; | |
168c7b3c | 157 | return AliCaloFitResults( maxamp, ped , Ret::kFitPar, |
f57baa2d | 158 | fTf1->GetParameter(0)/fkEulerSquared, |
507751ce | 159 | tmax, |
160 | timebinOffset, | |
f57baa2d | 161 | fTf1->GetChisquare(), |
162 | fTf1->GetNDF(), | |
168c7b3c | 163 | Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) ); |
f57baa2d | 164 | |
d655d7dd | 165 | // delete graph; |
166 | ||
167 | } | |
168 | else | |
169 | { | |
92d9f317 | 170 | |
2cd0ffda | 171 | Float_t chi2 = CalculateChi2(maxf, maxrev, first, last); |
172 | Int_t ndf = last - first - 1; // nsamples - 2 | |
168c7b3c | 173 | return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, timebinOffset, |
174 | timebinOffset, chi2, ndf, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) ); | |
d655d7dd | 175 | } |
2cd0ffda | 176 | } // ampcut |
d655d7dd | 177 | } |
168c7b3c | 178 | return AliCaloFitResults( Ret::kInvalid, Ret::kInvalid ); |
d655d7dd | 179 | |
180 | } | |
181 | ||
182 | ||
396baaf6 | 183 | /* |
d655d7dd | 184 | void |
57839add | 185 | AliCaloRawAnalyzerLMS::PrintFitResult(const TF1 *f) const |
d655d7dd | 186 | { |
187 | //comment | |
188 | cout << endl; | |
189 | cout << __FILE__ << __LINE__ << "Using this samplerange we get" << endl; | |
190 | cout << __FILE__ << __LINE__ << "AMPLITUDE = " << f->GetParameter(0)/fkEulerSquared << ",.. !!!!" << endl; | |
191 | cout << __FILE__ << __LINE__ << "TOF = " << f->GetParameter(1) << ",.. !!!!" << endl; | |
192 | cout << __FILE__ << __LINE__ << "NDF = " << f->GetNDF() << ",.. !!!!" << endl; | |
193 | // cout << __FILE__ << __LINE__ << "STATUS = " << f->GetStatus() << ",.. !!!!" << endl << endl; | |
194 | cout << endl << endl; | |
195 | } | |
396baaf6 | 196 | */ |