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 Revision 1.2.4.2 2000/06/26 07:39:42 kowal2
19 Changes to obey the coding rules
21 Revision 1.2.4.1 2000/06/25 08:38:41 kowal2
22 Splitted from AliTPCtracking
24 Revision 1.2 2000/04/17 09:37:33 kowal2
25 removed obsolete AliTPCDigitsDisplay.C
27 Revision 1.1.4.2 2000/04/10 11:32:37 kowal2
29 "ROOT"-based class with some extra functionality
34 //----------------------------------------------------------------------------
35 // Author: Marian Ivanov
37 // Implementation of class AliH2F
39 //-----------------------------------------------------------------------------
42 #include "TClonesArray.h"
45 #include "AliCluster.h"
46 #include "AliTPCClusterFinder.h"
49 // other include files follow here
53 //***********************************************************************
54 //***********************************************************************
55 //***********************************************************************
56 //***********************************************************************
57 AliH2F::AliH2F():TH2F()
62 AliH2F::AliH2F(const Text_t *name,const Text_t *title,
63 Int_t nbinsx,Axis_t xlow,Axis_t xup
64 ,Int_t nbinsy,Axis_t ylow,Axis_t yup):
65 TH2F(name,title,nbinsx,xlow,xup
77 AliH2F::AliH2F(const AliH2F &his)
83 AliH2F & AliH2F::operator = (const AliH2F & his)
89 TClonesArray * AliH2F::FindPeaks(Float_t threshold, Float_t noise)
91 //find peaks and write it in form of AliTPCcluster to array
93 //firstly we need to create object for cluster finding
94 //and fill it with contents of histogram
95 AliTPCClusterFinder cfinder;
96 cfinder.SetThreshold(threshold);
97 cfinder.SetNoise(noise);
98 cfinder.GetHisto(this);
99 return cfinder.FindPeaks3();
102 void AliH2F::ClearSpectrum()
105 Int_t dimx = fXaxis.GetNbins();
106 Int_t dimy = fYaxis.GetNbins();
107 for (Int_t i = 0 ;i<dimx;i++)
108 for (Int_t j = 0 ;j<dimy;j++)
110 SetCellContent(i,j,0);
116 void AliH2F::AddNoise(Float_t sn)
118 // add gauss noise with sigma sn
119 Int_t dimx = fXaxis.GetNbins();
120 Int_t dimy = fYaxis.GetNbins();
121 for (Int_t i = 0 ;i<dimx;i++)
122 for (Int_t j = 0 ;j<dimy;j++)
124 Float_t noise = gRandom->Gaus(0,sn);
125 Float_t oldv =GetCellContent(i,j);
126 Float_t olds =GetCellError(i,j);
129 SetCellContent(i,j,noise+oldv);
130 SetCellError(i,j,TMath::Sqrt((noise*noise+olds*olds)));
134 void AliH2F::AddGauss(Float_t x, Float_t y,
135 Float_t sx, Float_t sy, Float_t max)
137 //transform to histogram coordinata
138 Int_t dimx = fXaxis.GetNbins();
139 Int_t dimy = fYaxis.GetNbins();
140 Float_t dx =(GetXaxis()->GetXmax()-GetXaxis()->GetXmin())/Float_t(dimx);
141 Float_t dy =(GetYaxis()->GetXmax()-GetYaxis()->GetXmin())/Float_t(dimy);
142 // x=(x-GetXaxis()->GetXmin())/dx;
143 //y=(y-GetYaxis()->GetXmin())/dy;
148 for (Int_t i = 0 ;i<dimx;i++)
149 for (Int_t j = 0 ;j<dimy;j++)
151 Float_t x2 =GetXaxis()->GetBinCenter(i+1);
152 Float_t y2 =GetYaxis()->GetBinCenter(j+1);
153 Float_t dx2 = (x2-x)*(x2-x);
154 Float_t dy2 = (y2-y)*(y2-y);
155 Float_t amp =max*exp(-(dx2/(2*sx*sx)+dy2/(2*sy*sy)));
156 //Float_t oldv =GetCellContent(i+1,j+1);
157 // SetCellContent(i+1,j+1,amp+oldv);
162 void AliH2F::ClearUnderTh(Int_t threshold)
164 //clear histogram for bin under threshold
165 Int_t dimx = fXaxis.GetNbins();
166 Int_t dimy = fYaxis.GetNbins();
167 for (Int_t i = 0 ;i<=dimx;i++)
168 for (Int_t j = 0 ;j<=dimy;j++)
170 Float_t oldv =GetCellContent(i,j);
172 SetCellContent(i,j,0);
178 //round float to integer
179 Int_t dimx = fXaxis.GetNbins();
180 Int_t dimy = fYaxis.GetNbins();
181 for (Int_t i = 0 ;i<=dimx;i++)
182 for (Int_t j = 0 ;j<=dimy;j++)
184 Float_t oldv =GetCellContent(i,j);
186 SetCellContent(i,j,oldv);
192 AliH2F *AliH2F::GetSubrange2d(Float_t xmin, Float_t xmax,
193 Float_t ymin, Float_t ymax)
195 //this function return pointer to the new created
196 //histogram which is subhistogram of the
198 //subhistogram range must be inside histogram
201 xmin=fXaxis.GetXmin();
202 xmax=fXaxis.GetXmax();
205 ymin=fYaxis.GetXmin();
206 ymax=fYaxis.GetXmax();
209 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
210 Float_t(fXaxis.GetNbins()));
211 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
212 Float_t(fYaxis.GetNbins()));
214 TString t2 = fTitle ;
217 const Text_t *ktt1 = t1;
218 const Text_t *ktt2 = t2;
220 AliH2F * sub = new AliH2F(ktt1,ktt2,nx,xmin,xmax,ny,ymin,ymax);
222 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
223 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
224 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
225 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
226 for (Int_t i=0;i<nx;i++)
227 for (Int_t j=0;j<ny;j++)
229 Int_t index1 = GetBin(i1+i,i2+j);
230 // Int_t index2 = sub->GetBin(i,j);
231 Float_t val = GetBinContent(index1);
232 // sub->SetBinContent(index2,val);
233 // Float_t err = GetBinError(index1);
234 //sub->SetBinError(index2,GetBinError(index1));
235 sub->SetCellContent(i,j,val);
240 TH1F *AliH2F::GetAmplitudes(Float_t zmin, Float_t zmax, Float_t th, Float_t xmin, Float_t xmax,
241 Float_t ymin, Float_t ymax)
243 //this function return pointer to the new created
244 //histogram which is subhistogram of the
246 //subhistogram range must be inside histogram
249 xmin=fXaxis.GetXmin();
250 xmax=fXaxis.GetXmax();
253 ymin=fYaxis.GetXmin();
254 ymax=fYaxis.GetXmax();
256 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
257 Float_t(fXaxis.GetNbins()));
258 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
259 Float_t(fYaxis.GetNbins()));
261 TString t2 = fTitle ;
264 const Text_t *ktt1 = t1;
265 const Text_t *ktt2 = t2;
267 TH1F * h = new TH1F(ktt1,ktt2,100,zmin,zmax);
269 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
270 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
271 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
272 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
273 for (Int_t i=0;i<nx;i++)
274 for (Int_t j=0;j<ny;j++)
276 Int_t index1 = GetBin(i1+i,i2+j);
277 Float_t val = GetBinContent(index1);
278 if (val>th) h->Fill(val);
283 Float_t AliH2F::GetOccupancy(Float_t th , Float_t xmin, Float_t xmax,
284 Float_t ymin, Float_t ymax)
286 //this function return pointer to the new created
287 //histogram which is subhistogram of the
289 //subhistogram range must be inside histogram
292 xmin=fXaxis.GetXmin();
293 xmax=fXaxis.GetXmax();
296 ymin=fYaxis.GetXmin();
297 ymax=fYaxis.GetXmax();
299 Int_t nx = Int_t((xmax-xmin)/(fXaxis.GetXmax()-fXaxis.GetXmin()) *
300 Float_t(fXaxis.GetNbins()));
301 Int_t ny = Int_t((ymax-ymin)/(fYaxis.GetXmax()-fYaxis.GetXmin()) *
302 Float_t(fYaxis.GetNbins()));
305 Int_t i1 = Int_t( Float_t(fXaxis.GetNbins())*(xmin-fXaxis.GetXmin())/
306 (fXaxis.GetXmax()-fXaxis.GetXmin()) ) ;
307 Int_t i2 = Int_t( Float_t(fYaxis.GetNbins())*(ymin-fYaxis.GetXmin())/
308 (fYaxis.GetXmax()-fYaxis.GetXmin()) ) ;
309 for (Int_t i=0;i<nx;i++)
310 for (Int_t j=0;j<ny;j++)
312 Int_t index1 = GetBin(i1+i,i2+j);
313 Float_t val = GetBinContent(index1);
317 if (all>0) return Float_t(over)/Float_t(all);