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*/
50 fLinearFitterHistoArray(540),
51 fLinearFitterPArray(540),
52 fLinearFitterEArray(540)
55 // default constructor
58 //_____________________________________________________________________
59 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const AliTRDCalibraVdriftLinearFit &ped) : /*FOLD00*/
61 fVersion(ped.fVersion),
62 fNameCalibUsed(ped.fNameCalibUsed),
63 fLinearFitterHistoArray(540),
64 fLinearFitterPArray(540),
65 fLinearFitterEArray(540)
70 for (Int_t idet = 0; idet < 540; idet++){
72 const TVectorD *vectorE = (TVectorD*)ped.fLinearFitterEArray.UncheckedAt(idet);
73 const TVectorD *vectorP = (TVectorD*)ped.fLinearFitterPArray.UncheckedAt(idet);
74 const TH2S *hped = (TH2S*)ped.fLinearFitterHistoArray.UncheckedAt(idet);
76 if ( vectorE != 0x0 ) fLinearFitterEArray.AddAt(new TVectorD(*vectorE), idet);
77 if ( vectorP != 0x0 ) fLinearFitterPArray.AddAt(new TVectorD(*vectorP), idet);
79 TH2S *hNew = (TH2S *)hped->Clone();
80 //hNew->SetDirectory(0);
81 fLinearFitterHistoArray.AddAt(hNew,idet);
85 //_____________________________________________________________________
86 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const TObjArray &obja) : /*FOLD00*/
90 fLinearFitterHistoArray(540),
91 fLinearFitterPArray(540),
92 fLinearFitterEArray(540)
95 // constructor from a TObjArray
97 for (Int_t idet = 0; idet < 540; idet++){
98 const TH2S *hped = (TH2S*)obja.UncheckedAt(idet);
100 TH2S *hNew = (TH2S *)hped->Clone();
101 //hNew->SetDirectory(0);
102 fLinearFitterHistoArray.AddAt(hNew,idet);
106 //_____________________________________________________________________
107 AliTRDCalibraVdriftLinearFit& AliTRDCalibraVdriftLinearFit::operator = (const AliTRDCalibraVdriftLinearFit &source)
110 // assignment operator
112 if (&source == this) return *this;
113 new (this) AliTRDCalibraVdriftLinearFit(source);
117 //_____________________________________________________________________
118 AliTRDCalibraVdriftLinearFit::~AliTRDCalibraVdriftLinearFit() /*FOLD00*/
123 fLinearFitterHistoArray.SetOwner();
124 fLinearFitterPArray.SetOwner();
125 fLinearFitterEArray.SetOwner();
127 fLinearFitterHistoArray.Delete();
128 fLinearFitterPArray.Delete();
129 fLinearFitterEArray.Delete();
132 //_____________________________________________________________________________
133 void AliTRDCalibraVdriftLinearFit::Copy(TObject &c) const
139 AliTRDCalibraVdriftLinearFit& target = (AliTRDCalibraVdriftLinearFit &) c;
141 // Copy only the histos
142 for (Int_t idet = 0; idet < 540; idet++){
143 if(fLinearFitterHistoArray.UncheckedAt(idet)){
144 TH2S *hped1 = (TH2S *)target.GetLinearFitterHisto(idet,kTRUE);
145 //hped1->SetDirectory(0);
146 hped1->Add((const TH2S *)fLinearFitterHistoArray.UncheckedAt(idet));
153 //_____________________________________________________________________________
154 Long64_t AliTRDCalibraVdriftLinearFit::Merge(const TCollection* list)
156 // Merge list of objects (needed by PROOF)
164 TIterator* iter = list->MakeIterator();
167 // collection of generated histograms
169 while((obj = iter->Next()) != 0)
171 AliTRDCalibraVdriftLinearFit* entry = dynamic_cast<AliTRDCalibraVdriftLinearFit*>(obj);
172 if (entry == 0) continue;
174 // Copy only the histos
175 for (Int_t idet = 0; idet < 540; idet++){
176 if(entry->GetLinearFitterHisto(idet)){
177 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
178 Double_t entriesa = hped1->GetEntries();
179 Double_t entriesb = ((TH2S *)entry->GetLinearFitterHisto(idet))->GetEntries();
180 if((entriesa + entriesb) < 5*32767) hped1->Add(entry->GetLinearFitterHisto(idet));
189 //_____________________________________________________________________
190 void AliTRDCalibraVdriftLinearFit::Add(const AliTRDCalibraVdriftLinearFit *ped)
198 for (Int_t idet = 0; idet < 540; idet++){
199 const TH2S *hped = (TH2S*)ped->GetLinearFitterHistoNoForce(idet);
200 //printf("idet %d\n",idet);
203 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
204 Double_t entriesa = hped1->GetEntries();
205 Double_t entriesb = hped->GetEntries();
206 if((entriesa + entriesb) < 5*32767) hped1->Add(hped);
210 //______________________________________________________________________________________
211 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHisto(Int_t detector, Bool_t force)
214 // return pointer to TH2F histo
215 // if force is true create a new histo if it doesn't exist allready
217 if ( !force || fLinearFitterHistoArray.UncheckedAt(detector) )
218 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
220 return GetLinearFitterHistoForce(detector);
223 //______________________________________________________________________________________
224 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHistoForce(Int_t detector)
227 // return pointer to TH2F histo
228 // if NULL create a new histo if it doesn't exist allready
230 if (fLinearFitterHistoArray.UncheckedAt(detector))
231 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
233 // if we are forced and TLinearFitter doesn't yes exist create it
236 TString name("LFDV");
241 TH2S *lfdv = new TH2S((const Char_t *)name,(const Char_t *) name
244 lfdv->SetXTitle("tan(phi_{track})");
245 lfdv->SetYTitle("dy/dt");
246 lfdv->SetZTitle("Number of clusters");
248 lfdv->SetDirectory(0);
250 fLinearFitterHistoArray.AddAt(lfdv,detector);
253 //______________________________________________________________________________________
254 Bool_t AliTRDCalibraVdriftLinearFit::GetParam(Int_t detector, TVectorD *param)
257 // return param for this detector
259 if ( fLinearFitterPArray.UncheckedAt(detector) ){
260 const TVectorD *vectorP = (TVectorD*)fLinearFitterPArray.UncheckedAt(detector);
261 if(!param) param = new TVectorD(2);
262 for(Int_t k = 0; k < 2; k++){
263 (*param)[k] = (*vectorP)[k];
270 //______________________________________________________________________________________
271 Bool_t AliTRDCalibraVdriftLinearFit::GetError(Int_t detector, TVectorD *error)
274 // return error for this detector
276 if ( fLinearFitterEArray.UncheckedAt(detector) ){
277 const TVectorD *vectorE = (TVectorD*)fLinearFitterEArray.UncheckedAt(detector);
278 if(!error) error = new TVectorD(3);
279 for(Int_t k = 0; k < 3; k++){
280 (*error)[k] = (*vectorE)[k];
287 //______________________________________________________________________________________
288 void AliTRDCalibraVdriftLinearFit::Update(Int_t detector, Float_t tnp, Float_t pars1)
291 // Fill the 2D histos for debugging
294 TH2S *h = ((TH2S *) GetLinearFitterHisto(detector,kTRUE));
295 Double_t nbentries = h->GetEntries();
296 if(nbentries < 5*32767) h->Fill(tnp,pars1);
299 //____________Functions fit Online CH2d________________________________________
300 void AliTRDCalibraVdriftLinearFit::FillPEArray()
303 // Fill fLinearFitterPArray and fLinearFitterEArray from inside
307 Int_t *arrayI = new Int_t[540];
308 for(Int_t k = 0; k< 540; k++){
313 for(Int_t cb = 0; cb < 540; cb++){
314 const TH2S *linearfitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
315 //printf("Processing the detector cb %d we find %d\n",cb, (Bool_t) linearfitterhisto);
317 if ( linearfitterhisto != 0 ){
319 // Fill a linearfitter
320 TAxis *xaxis = linearfitterhisto->GetXaxis();
321 TAxis *yaxis = linearfitterhisto->GetYaxis();
322 TLinearFitter linearfitter = TLinearFitter(2,"pol1");
324 Double_t integral = linearfitterhisto->Integral();
325 //printf("Integral is %f\n",integral);
326 Bool_t securitybreaking = kFALSE;
327 if(TMath::Abs(integral-1199) < 0.00001) securitybreaking = kTRUE;
328 for(Int_t ibinx = 0; ibinx < linearfitterhisto->GetNbinsX(); ibinx++){
329 for(Int_t ibiny = 0; ibiny < linearfitterhisto->GetNbinsY(); ibiny++){
330 if(linearfitterhisto->GetBinContent(ibinx+1,ibiny+1)>0){
331 Double_t x = xaxis->GetBinCenter(ibinx+1);
332 Double_t y = yaxis->GetBinCenter(ibiny+1);
334 for(Int_t k = 0; k < (Int_t)linearfitterhisto->GetBinContent(ibinx+1,ibiny+1); k++){
335 if(!securitybreaking){
336 linearfitter.AddPoint(&x,y);
340 if(arrayI[cb]< 1198){
341 linearfitter.AddPoint(&x,y);
351 //printf("Find %d entries for the detector %d\n",arrayI[cb],cb);
353 // Eval the linear fitter
355 TVectorD *par = new TVectorD(2);
356 TVectorD pare = TVectorD(2);
357 TVectorD *parE = new TVectorD(3);
359 if((linearfitter.EvalRobust(0.8)==0)) {
360 //if((linearfitter.Eval()==0)) {
361 //printf("Take the param\n");
362 linearfitter.GetParameters(*par);
364 //linearfitter.GetErrors(pare);
365 //Float_t ppointError = TMath::Sqrt(TMath::Abs(linearfitter.GetChisquare())/arrayI[cb]);
366 //(*parE)[0] = pare[0]*ppointError;
367 //(*parE)[1] = pare[1]*ppointError;
371 (*parE)[2] = (Double_t) arrayI[cb];
372 fLinearFitterPArray.AddAt(par,cb);
373 fLinearFitterEArray.AddAt(parE,cb);
378 //printf("Finish\n");
381 //delete linearfitterhisto;