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a0cef3e1 | 1 | // @(#) $Id$ |
2 | // origin: hough/AliL3Histogram1D.cxx,v 1.11 Tue Jun 14 10:55:20 2005 UTC by cvetan | |
3 | ||
4 | // Author: Anders Vestbo <mailto:vestbo@fi.uib.no> | |
5 | //*-- Copyright © ALICE HLT Group | |
6 | ||
7 | #include <strings.h> | |
8 | #include "AliHLTStdIncludes.h" | |
9 | ||
10 | #include "AliHLTTPCLogging.h" | |
11 | #include "AliHLTTPCHistogram1D.h" | |
12 | ||
a0cef3e1 | 13 | #include <TH1.h> |
a0cef3e1 | 14 | |
15 | #if __GNUC__ >= 3 | |
16 | using namespace std; | |
17 | #endif | |
18 | ||
19 | //_____________________________________________________________ | |
20 | // AliHLTTPCHistogram1D | |
21 | // | |
22 | // 1D histogram class. | |
23 | ||
24 | ClassImp(AliHLTTPCHistogram1D) | |
25 | ||
26 | AliHLTTPCHistogram1D::AliHLTTPCHistogram1D() | |
27 | { | |
28 | //default ctor | |
29 | fNbins = 0; | |
30 | fNcells = 0; | |
31 | fEntries = 0; | |
32 | fXmin = 0; | |
33 | fXmax = 0; | |
a0cef3e1 | 34 | fRootHisto = 0; |
a0cef3e1 | 35 | fThreshold = 0; |
36 | fContent = 0; | |
37 | ||
38 | } | |
39 | ||
40 | AliHLTTPCHistogram1D::AliHLTTPCHistogram1D(Char_t *name,Char_t */*id*/,Int_t nxbin,Double_t xmin,Double_t xmax) | |
41 | ||
42 | { | |
43 | //normal ctor | |
44 | strcpy(fName,name); | |
45 | fNbins = nxbin; | |
46 | fNcells = fNbins + 2; | |
47 | fEntries = 0; | |
48 | fXmin = xmin; | |
49 | fXmax = xmax; | |
a0cef3e1 | 50 | fRootHisto = 0; |
a0cef3e1 | 51 | fThreshold = 0; |
52 | ||
53 | fContent = new Double_t[fNcells]; | |
54 | Reset(); | |
55 | } | |
56 | ||
57 | AliHLTTPCHistogram1D::~AliHLTTPCHistogram1D() | |
58 | { | |
59 | //Destructor | |
60 | if(fContent) | |
61 | delete [] fContent; | |
a0cef3e1 | 62 | if(fRootHisto) |
63 | delete fRootHisto; | |
a0cef3e1 | 64 | } |
65 | ||
66 | ||
67 | void AliHLTTPCHistogram1D::Reset() | |
68 | { | |
69 | //Reset histogram contents | |
70 | #if defined(__DECCXX) | |
71 | bzero((char *)fContent,fNcells*sizeof(Double_t)); | |
72 | #else | |
73 | bzero(fContent,fNcells*sizeof(Double_t)); | |
74 | #endif | |
75 | fEntries=0; | |
76 | } | |
77 | ||
78 | void AliHLTTPCHistogram1D::Fill(Double_t x,Int_t weight) | |
79 | { | |
80 | //Fill a given bin with weight | |
81 | Int_t bin = FindBin(x); | |
82 | AddBinContent(bin,weight); | |
83 | } | |
84 | ||
85 | ||
86 | Int_t AliHLTTPCHistogram1D::FindBin(Double_t x) const | |
87 | { | |
88 | //Find a given bin | |
89 | if(x < fXmin || x > fXmax) | |
90 | return 0; | |
91 | ||
92 | return 1 + (Int_t)(fNbins*(x-fXmin)/(fXmax-fXmin)); | |
93 | ||
94 | } | |
95 | ||
96 | Int_t AliHLTTPCHistogram1D::GetMaximumBin() const | |
97 | { | |
98 | //Find the bin with the largest content | |
99 | Double_t maxvalue=0; | |
100 | Int_t maxbin=0; | |
101 | for(Int_t i=0; i<fNcells; i++) | |
102 | { | |
103 | if(fContent[i] > maxvalue) | |
104 | { | |
105 | maxvalue=fContent[i]; | |
106 | maxbin = i; | |
107 | } | |
108 | } | |
109 | return maxbin; | |
110 | } | |
111 | ||
112 | Double_t AliHLTTPCHistogram1D::GetBinContent(Int_t bin) const | |
113 | { | |
114 | //Get bin content | |
115 | if(bin >= fNcells) | |
116 | { | |
117 | LOG(AliHLTTPCLog::kError,"AliHLTTPCHistogram::GetBinContent","array")<<AliHLTTPCLog::kDec<< | |
118 | "bin out of range "<<bin<<ENDLOG; | |
119 | return 0; | |
120 | } | |
121 | ||
122 | if(fContent[bin] < fThreshold) | |
123 | return 0; | |
124 | return fContent[bin]; | |
125 | } | |
126 | ||
127 | ||
128 | void AliHLTTPCHistogram1D::SetBinContent(Int_t bin,Int_t value) | |
129 | { | |
130 | //Set bin content | |
131 | if(bin >= fNcells) | |
132 | { | |
133 | LOG(AliHLTTPCLog::kError,"AliHLTTPCHistogram::SetBinContent","array")<<AliHLTTPCLog::kDec<< | |
134 | "bin out of range "<<bin<<ENDLOG; | |
135 | return; | |
136 | } | |
137 | if(bin == 0) | |
138 | return; | |
139 | fContent[bin]=value; | |
140 | ||
141 | } | |
142 | ||
143 | void AliHLTTPCHistogram1D::AddBinContent(Int_t bin,Int_t weight) | |
144 | { | |
145 | //Add weight to bin content | |
146 | if(bin < 0 || bin > fNcells) | |
147 | { | |
148 | LOG(AliHLTTPCLog::kError,"AliHLTTPCHistogram::AddBinContent","array")<<AliHLTTPCLog::kDec<< | |
149 | "bin-value out of range "<<bin<<ENDLOG; | |
150 | return; | |
151 | } | |
152 | if(bin == 0) | |
153 | return; | |
154 | fEntries++; | |
155 | fContent[bin] += weight; | |
156 | } | |
157 | ||
158 | Double_t AliHLTTPCHistogram1D::GetBinCenter(Int_t bin) const | |
159 | { | |
160 | //Get bin center | |
161 | Double_t binwidth = (fXmax - fXmin) / fNbins; | |
162 | return fXmin + (bin-1) * binwidth + 0.5*binwidth; | |
163 | ||
164 | } | |
165 | ||
166 | void AliHLTTPCHistogram1D::Draw(Char_t *option) | |
167 | { | |
168 | //Draw the histogram | |
169 | fRootHisto = new TH1F(fName,"",fNbins,fXmin,fXmax); | |
170 | for(Int_t bin=0; bin<fNcells; bin++) | |
171 | fRootHisto->AddBinContent(bin,GetBinContent(bin)); | |
172 | ||
173 | fRootHisto->Draw(option); | |
174 | ||
175 | } |