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 ////////////////////////////////////////////////////////////////////////////
20 // AliTRDCalibraVdriftLinearFit //
22 // Does the Vdrift an ExB calibration by applying a linear fit //
25 // R. Bailhache (R.Bailhache@gsi.de) //
27 ////////////////////////////////////////////////////////////////////////////
30 #include <TObjArray.h>
35 #include <TLinearFitter.h>
37 #include <TTreeStream.h>
41 #include "AliTRDCalibraVdriftLinearFit.h"
43 ClassImp(AliTRDCalibraVdriftLinearFit) /*FOLD00*/
45 //_____________________________________________________________________
46 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit() : /*FOLD00*/
49 fLinearFitterHistoArray(540),
50 fLinearFitterPArray(540),
51 fLinearFitterEArray(540)
54 // default constructor
57 //_____________________________________________________________________
58 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const AliTRDCalibraVdriftLinearFit &ped) : /*FOLD00*/
60 fVersion(ped.fVersion),
61 fLinearFitterHistoArray(540),
62 fLinearFitterPArray(540),
63 fLinearFitterEArray(540)
68 for (Int_t idet = 0; idet < 540; idet++){
70 const TVectorD *vectorE = (TVectorD*)ped.fLinearFitterEArray.UncheckedAt(idet);
71 const TVectorD *vectorP = (TVectorD*)ped.fLinearFitterPArray.UncheckedAt(idet);
72 const TH2S *hped = (TH2S*)ped.fLinearFitterHistoArray.UncheckedAt(idet);
74 if ( vectorE != 0x0 ) fLinearFitterEArray.AddAt(new TVectorD(*vectorE), idet);
75 if ( vectorP != 0x0 ) fLinearFitterPArray.AddAt(new TVectorD(*vectorP), idet);
77 TH2S *hNew = (TH2S *)hped->Clone();
78 //hNew->SetDirectory(0);
79 fLinearFitterHistoArray.AddAt(hNew,idet);
83 //_____________________________________________________________________
84 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const TObjArray &obja) : /*FOLD00*/
87 fLinearFitterHistoArray(540),
88 fLinearFitterPArray(540),
89 fLinearFitterEArray(540)
92 // constructor from a TObjArray
94 for (Int_t idet = 0; idet < 540; idet++){
95 const TH2S *hped = (TH2S*)obja.UncheckedAt(idet);
97 TH2S *hNew = (TH2S *)hped->Clone();
98 //hNew->SetDirectory(0);
99 fLinearFitterHistoArray.AddAt(hNew,idet);
103 //_____________________________________________________________________
104 AliTRDCalibraVdriftLinearFit& AliTRDCalibraVdriftLinearFit::operator = (const AliTRDCalibraVdriftLinearFit &source)
107 // assignment operator
109 if (&source == this) return *this;
110 new (this) AliTRDCalibraVdriftLinearFit(source);
114 //_____________________________________________________________________
115 AliTRDCalibraVdriftLinearFit::~AliTRDCalibraVdriftLinearFit() /*FOLD00*/
120 fLinearFitterHistoArray.Delete();
121 fLinearFitterPArray.Delete();
122 fLinearFitterEArray.Delete();
125 //_____________________________________________________________________________
126 void AliTRDCalibraVdriftLinearFit::Copy(TObject &c) const
132 AliTRDCalibraVdriftLinearFit& target = (AliTRDCalibraVdriftLinearFit &) c;
134 // Copy only the histos
135 for (Int_t idet = 0; idet < 540; idet++){
136 if(fLinearFitterHistoArray.UncheckedAt(idet)){
137 TH2S *hped1 = (TH2S *)target.GetLinearFitterHisto(idet,kTRUE);
138 //hped1->SetDirectory(0);
139 hped1->Add((const TH2S *)fLinearFitterHistoArray.UncheckedAt(idet));
146 //_____________________________________________________________________________
147 Long64_t AliTRDCalibraVdriftLinearFit::Merge(const TCollection* list)
149 // Merge list of objects (needed by PROOF)
157 TIterator* iter = list->MakeIterator();
160 // collection of generated histograms
162 while((obj = iter->Next()) != 0)
164 AliTRDCalibraVdriftLinearFit* entry = dynamic_cast<AliTRDCalibraVdriftLinearFit*>(obj);
165 if (entry == 0) continue;
167 // Copy only the histos
168 for (Int_t idet = 0; idet < 540; idet++){
169 if(entry->GetLinearFitterHisto(idet)){
170 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
171 Double_t entriesa = hped1->GetEntries();
172 Double_t entriesb = ((TH2S *)entry->GetLinearFitterHisto(idet))->GetEntries();
173 if((entriesa + entriesb) < 5*32767) hped1->Add(entry->GetLinearFitterHisto(idet));
182 //_____________________________________________________________________
183 void AliTRDCalibraVdriftLinearFit::Add(AliTRDCalibraVdriftLinearFit *ped)
191 for (Int_t idet = 0; idet < 540; idet++){
192 const TH2S *hped = (TH2S*)ped->GetLinearFitterHisto(idet);
193 //printf("idet %d\n",idet);
196 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
197 Double_t entriesa = hped1->GetEntries();
198 Double_t entriesb = hped->GetEntries();
199 if((entriesa + entriesb) < 5*32767) hped1->Add(hped);
203 //______________________________________________________________________________________
204 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHisto(Int_t detector, Bool_t force)
207 // return pointer to TH2F histo
208 // if force is true create a new histo if it doesn't exist allready
210 if ( !force || fLinearFitterHistoArray.UncheckedAt(detector) )
211 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
213 // if we are forced and TLinearFitter doesn't yes exist create it
216 TString name("LFDV");
221 TH2S *lfdv = new TH2S((const Char_t *)name,(const Char_t *) name
224 lfdv->SetXTitle("tan(phi_{track})");
225 lfdv->SetYTitle("dy/dt");
226 lfdv->SetZTitle("Number of clusters");
228 lfdv->SetDirectory(0);
230 fLinearFitterHistoArray.AddAt(lfdv,detector);
233 //______________________________________________________________________________________
234 Bool_t AliTRDCalibraVdriftLinearFit::GetParam(Int_t detector, TVectorD *param)
237 // return param for this detector
239 if ( fLinearFitterPArray.UncheckedAt(detector) ){
240 const TVectorD *vectorP = (TVectorD*)fLinearFitterPArray.UncheckedAt(detector);
241 if(!param) param = new TVectorD(2);
242 for(Int_t k = 0; k < 2; k++){
243 (*param)[k] = (*vectorP)[k];
250 //______________________________________________________________________________________
251 Bool_t AliTRDCalibraVdriftLinearFit::GetError(Int_t detector, TVectorD *error)
254 // return error for this detector
256 if ( fLinearFitterEArray.UncheckedAt(detector) ){
257 const TVectorD *vectorE = (TVectorD*)fLinearFitterEArray.UncheckedAt(detector);
258 if(!error) error = new TVectorD(3);
259 for(Int_t k = 0; k < 3; k++){
260 (*error)[k] = (*vectorE)[k];
267 //______________________________________________________________________________________
268 void AliTRDCalibraVdriftLinearFit::Update(Int_t detector, Float_t tnp, Float_t pars1)
271 // Fill the 2D histos for debugging
274 TH2S *h = ((TH2S *) GetLinearFitterHisto(detector,kTRUE));
275 Double_t nbentries = h->GetEntries();
276 if(nbentries < 5*32767) h->Fill(tnp,pars1);
279 //____________Functions fit Online CH2d________________________________________
280 void AliTRDCalibraVdriftLinearFit::FillPEArray()
283 // Fill fLinearFitterPArray and fLinearFitterEArray from inside
287 Int_t *arrayI = new Int_t[540];
288 for(Int_t k = 0; k< 540; k++){
293 for(Int_t cb = 0; cb < 540; cb++){
294 const TH2S *linearfitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
295 //printf("Processing the detector cb %d we find %d\n",cb, (Bool_t) linearfitterhisto);
297 if ( linearfitterhisto != 0 ){
299 // Fill a linearfitter
300 TAxis *xaxis = linearfitterhisto->GetXaxis();
301 TAxis *yaxis = linearfitterhisto->GetYaxis();
302 TLinearFitter linearfitter = TLinearFitter(2,"pol1");
304 for(Int_t ibinx = 0; ibinx < linearfitterhisto->GetNbinsX(); ibinx++){
305 for(Int_t ibiny = 0; ibiny < linearfitterhisto->GetNbinsY(); ibiny++){
306 if(linearfitterhisto->GetBinContent(ibinx+1,ibiny+1)>0){
307 Double_t x = xaxis->GetBinCenter(ibinx+1);
308 Double_t y = yaxis->GetBinCenter(ibiny+1);
309 for(Int_t k = 0; k < (Int_t)linearfitterhisto->GetBinContent(ibinx+1,ibiny+1); k++){
310 linearfitter.AddPoint(&x,y);
317 //printf("Find %d entries for the detector %d\n",arrayI[cb],cb);
319 // Eval the linear fitter
321 TVectorD *par = new TVectorD(2);
322 TVectorD pare = TVectorD(2);
323 TVectorD *parE = new TVectorD(3);
325 linearfitter.GetParameters(*par);
326 linearfitter.GetErrors(pare);
327 Float_t ppointError = TMath::Sqrt(TMath::Abs(linearfitter.GetChisquare())/arrayI[cb]);
328 (*parE)[0] = pare[0]*ppointError;
329 (*parE)[1] = pare[1]*ppointError;
330 (*parE)[2] = (Double_t) arrayI[cb];
331 fLinearFitterPArray.AddAt(par,cb);
332 fLinearFitterEArray.AddAt(parE,cb);
337 //delete linearfitterhisto;