1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 //----------------------------------------------------------------------------
19 // Author: Marian Ivanov
21 // Implementation of class AliH2F
23 //-----------------------------------------------------------------------------
25 #include <TClonesArray.h>
33 //***********************************************************************
34 //***********************************************************************
35 //***********************************************************************
36 //***********************************************************************
37 AliH2F::AliH2F():TH2F()
42 AliH2F::AliH2F(const Text_t *name,const Text_t *title,
43 Int_t nbinsx,Axis_t xlow,Axis_t xup
44 ,Int_t nbinsy,Axis_t ylow,Axis_t yup):
45 TH2F(name,title,nbinsx,xlow,xup
57 AliH2F::AliH2F(const AliH2F &his) :
64 AliH2F & AliH2F::operator = (const AliH2F & /*his*/)
71 TClonesArray * AliH2F::FindPeaks(Float_t threshold, Float_t noise)
73 //find peaks and write it in form of AliTPCcluster to array
75 //firstly we need to create object for cluster finding
76 //and fill it with contents of histogram
77 AliTPCClusterFinder cfinder;
78 cfinder.SetThreshold(threshold);
79 cfinder.SetNoise(noise);
80 cfinder.GetHisto(this);
81 return cfinder.FindPeaks3();
85 void AliH2F::ClearSpectrum()
88 Int_t dimx = fXaxis.GetNbins();
89 Int_t dimy = fYaxis.GetNbins();
90 for (Int_t i = 0 ;i<dimx;i++)
91 for (Int_t j = 0 ;j<dimy;j++)
93 SetCellContent(i,j,0);
99 void AliH2F::AddNoise(Float_t sn)
101 // add gauss noise with sigma sn
102 Int_t dimx = fXaxis.GetNbins();
103 Int_t dimy = fYaxis.GetNbins();
104 for (Int_t i = 0 ;i<dimx;i++)
105 for (Int_t j = 0 ;j<dimy;j++)
107 Float_t noise = gRandom->Gaus(0,sn);
108 Float_t oldv =GetCellContent(i,j);
109 Float_t olds =GetCellError(i,j);
112 SetCellContent(i,j,noise+oldv);
113 SetCellError(i,j,TMath::Sqrt((noise*noise+olds*olds)));
117 void AliH2F::AddGauss(Float_t x, Float_t y,
118 Float_t sx, Float_t sy, Float_t max)
120 //transform to histogram coordinata
121 Int_t dimx = fXaxis.GetNbins();
122 Int_t dimy = fYaxis.GetNbins();
123 Float_t dx =(GetXaxis()->GetXmax()-GetXaxis()->GetXmin())/Float_t(dimx);
124 Float_t dy =(GetYaxis()->GetXmax()-GetYaxis()->GetXmin())/Float_t(dimy);
125 // x=(x-GetXaxis()->GetXmin())/dx;
126 //y=(y-GetYaxis()->GetXmin())/dy;
131 for (Int_t i = 0 ;i<dimx;i++)
132 for (Int_t j = 0 ;j<dimy;j++)
134 Float_t x2 =GetXaxis()->GetBinCenter(i+1);
135 Float_t y2 =GetYaxis()->GetBinCenter(j+1);
136 Float_t dx2 = (x2-x)*(x2-x);
137 Float_t dy2 = (y2-y)*(y2-y);
138 Float_t amp =max*exp(-(dx2/(2*sx*sx)+dy2/(2*sy*sy)));
139 //Float_t oldv =GetCellContent(i+1,j+1);
140 // SetCellContent(i+1,j+1,amp+oldv);
145 void AliH2F::ClearUnderTh(Int_t threshold)
147 //clear histogram for bin under threshold
148 Int_t dimx = fXaxis.GetNbins();
149 Int_t dimy = fYaxis.GetNbins();
150 for (Int_t i = 0 ;i<=dimx;i++)
151 for (Int_t j = 0 ;j<=dimy;j++)
153 Float_t oldv =GetCellContent(i,j);
155 SetCellContent(i,j,0);
161 //round float to integer
162 Int_t dimx = fXaxis.GetNbins();
163 Int_t dimy = fYaxis.GetNbins();
164 for (Int_t i = 0 ;i<=dimx;i++)
165 for (Int_t j = 0 ;j<=dimy;j++)
167 Float_t oldv =GetCellContent(i,j);
169 SetCellContent(i,j,oldv);
175 AliH2F *AliH2F::GetSubrange2d(Float_t xmin, Float_t xmax,
176 Float_t ymin, Float_t ymax)
178 //this function return pointer to the new created
179 //histogram which is subhistogram of the
181 //subhistogram range must be inside histogram
184 xmin=fXaxis.GetXmin();
185 xmax=fXaxis.GetXmax();
188 ymin=fYaxis.GetXmin();
189 ymax=fYaxis.GetXmax();
192 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
193 Float_t(fXaxis.GetNbins()));
194 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
195 Float_t(fYaxis.GetNbins()));
197 TString t2 = fTitle ;
200 const Text_t *ktt1 = t1;
201 const Text_t *ktt2 = t2;
203 AliH2F * sub = new AliH2F(ktt1,ktt2,nx,xmin,xmax,ny,ymin,ymax);
205 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
206 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
207 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
208 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
209 for (Int_t i=0;i<nx;i++)
210 for (Int_t j=0;j<ny;j++)
212 Int_t index1 = GetBin(i1+i,i2+j);
213 // Int_t index2 = sub->GetBin(i,j);
214 Float_t val = GetBinContent(index1);
215 // sub->SetBinContent(index2,val);
216 // Float_t err = GetBinError(index1);
217 //sub->SetBinError(index2,GetBinError(index1));
218 sub->SetCellContent(i,j,val);
223 TH1F *AliH2F::GetAmplitudes(Float_t zmin, Float_t zmax, Float_t th, Float_t xmin, Float_t xmax,
224 Float_t ymin, Float_t ymax)
226 //this function return pointer to the new created
227 //histogram which is subhistogram of the
229 //subhistogram range must be inside histogram
232 xmin=fXaxis.GetXmin();
233 xmax=fXaxis.GetXmax();
236 ymin=fYaxis.GetXmin();
237 ymax=fYaxis.GetXmax();
239 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
240 Float_t(fXaxis.GetNbins()));
241 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
242 Float_t(fYaxis.GetNbins()));
244 TString t2 = fTitle ;
247 const Text_t *ktt1 = t1;
248 const Text_t *ktt2 = t2;
250 TH1F * h = new TH1F(ktt1,ktt2,100,zmin,zmax);
252 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
253 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
254 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
255 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
256 for (Int_t i=0;i<nx;i++)
257 for (Int_t j=0;j<ny;j++)
259 Int_t index1 = GetBin(i1+i,i2+j);
260 Float_t val = GetBinContent(index1);
261 if (val>th) h->Fill(val);
266 Float_t AliH2F::GetOccupancy(Float_t th , Float_t xmin, Float_t xmax,
267 Float_t ymin, Float_t ymax)
269 //this function return pointer to the new created
270 //histogram which is subhistogram of the
272 //subhistogram range must be inside histogram
275 xmin=fXaxis.GetXmin();
276 xmax=fXaxis.GetXmax();
279 ymin=fYaxis.GetXmin();
280 ymax=fYaxis.GetXmax();
282 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
283 Float_t(fXaxis.GetNbins()));
284 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
285 Float_t(fYaxis.GetNbins()));
288 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
289 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
290 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
291 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
292 for (Int_t i=0;i<nx;i++)
293 for (Int_t j=0;j<ny;j++)
295 Int_t index1 = GetBin(i1+i,i2+j);
296 Float_t val = GetBinContent(index1);
300 if (all>0) return Float_t(over)/Float_t(all);