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),
56 // default constructor
59 //_____________________________________________________________________
60 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const AliTRDCalibraVdriftLinearFit &ped) : /*FOLD00*/
62 fVersion(ped.fVersion),
63 fNameCalibUsed(ped.fNameCalibUsed),
64 fLinearFitterHistoArray(540),
65 fLinearFitterPArray(540),
66 fLinearFitterEArray(540),
72 for (Int_t idet = 0; idet < 540; idet++){
74 const TVectorD *vectorE = (TVectorD*)ped.fLinearFitterEArray.UncheckedAt(idet);
75 const TVectorD *vectorP = (TVectorD*)ped.fLinearFitterPArray.UncheckedAt(idet);
76 const TH2S *hped = (TH2S*)ped.fLinearFitterHistoArray.UncheckedAt(idet);
78 if ( vectorE != 0x0 ) fLinearFitterEArray.AddAt(new TVectorD(*vectorE), idet);
79 if ( vectorP != 0x0 ) fLinearFitterPArray.AddAt(new TVectorD(*vectorP), idet);
81 TH2S *hNew = (TH2S *)hped->Clone();
82 //hNew->SetDirectory(0);
83 fLinearFitterHistoArray.AddAt(hNew,idet);
87 //_____________________________________________________________________
88 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const TObjArray &obja) : /*FOLD00*/
92 fLinearFitterHistoArray(540),
93 fLinearFitterPArray(540),
94 fLinearFitterEArray(540),
98 // constructor from a TObjArray
100 for (Int_t idet = 0; idet < 540; idet++){
101 const TH2S *hped = (TH2S*)obja.UncheckedAt(idet);
103 TH2S *hNew = (TH2S *)hped->Clone();
104 //hNew->SetDirectory(0);
105 fLinearFitterHistoArray.AddAt(hNew,idet);
109 //_____________________________________________________________________
110 AliTRDCalibraVdriftLinearFit& AliTRDCalibraVdriftLinearFit::operator = (const AliTRDCalibraVdriftLinearFit &source)
113 // assignment operator
115 if (&source == this) return *this;
116 new (this) AliTRDCalibraVdriftLinearFit(source);
120 //_____________________________________________________________________
121 AliTRDCalibraVdriftLinearFit::~AliTRDCalibraVdriftLinearFit() /*FOLD00*/
126 fLinearFitterHistoArray.SetOwner();
127 fLinearFitterPArray.SetOwner();
128 fLinearFitterEArray.SetOwner();
130 fLinearFitterHistoArray.Delete();
131 fLinearFitterPArray.Delete();
132 fLinearFitterEArray.Delete();
135 //_____________________________________________________________________________
136 void AliTRDCalibraVdriftLinearFit::Copy(TObject &c) const
142 AliTRDCalibraVdriftLinearFit& target = (AliTRDCalibraVdriftLinearFit &) c;
144 // Copy only the histos
145 for (Int_t idet = 0; idet < 540; idet++){
146 if(fLinearFitterHistoArray.UncheckedAt(idet)){
147 TH2S *hped1 = (TH2S *)target.GetLinearFitterHisto(idet,kTRUE);
148 //hped1->SetDirectory(0);
149 hped1->Add((const TH2S *)fLinearFitterHistoArray.UncheckedAt(idet));
156 //_____________________________________________________________________________
157 Long64_t AliTRDCalibraVdriftLinearFit::Merge(const TCollection* list)
159 // Merge list of objects (needed by PROOF)
167 TIterator* iter = list->MakeIterator();
170 // collection of generated histograms
172 while((obj = iter->Next()) != 0)
174 AliTRDCalibraVdriftLinearFit* entry = dynamic_cast<AliTRDCalibraVdriftLinearFit*>(obj);
175 if (entry == 0) continue;
177 // Copy only the histos
178 for (Int_t idet = 0; idet < 540; idet++){
179 if(entry->GetLinearFitterHisto(idet)){
180 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
181 Double_t entriesa = hped1->GetEntries();
182 Double_t entriesb = ((TH2S *)entry->GetLinearFitterHisto(idet))->GetEntries();
183 if((entriesa + entriesb) < 5*32767) hped1->Add(entry->GetLinearFitterHisto(idet));
192 //_____________________________________________________________________
193 void AliTRDCalibraVdriftLinearFit::Add(const AliTRDCalibraVdriftLinearFit *ped)
201 for (Int_t idet = 0; idet < 540; idet++){
202 const TH2S *hped = (TH2S*)ped->GetLinearFitterHistoNoForce(idet);
203 //printf("idet %d\n",idet);
206 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
207 Double_t entriesa = hped1->GetEntries();
208 Double_t entriesb = hped->GetEntries();
209 if((entriesa + entriesb) < 5*32767) hped1->Add(hped);
213 //______________________________________________________________________________________
214 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHisto(Int_t detector, Bool_t force)
217 // return pointer to TH2F histo
218 // if force is true create a new histo if it doesn't exist allready
220 if ( !force || fLinearFitterHistoArray.UncheckedAt(detector) )
221 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
223 return GetLinearFitterHistoForce(detector);
226 //______________________________________________________________________________________
227 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHistoForce(Int_t detector)
230 // return pointer to TH2F histo
231 // if NULL create a new histo if it doesn't exist allready
233 if (fLinearFitterHistoArray.UncheckedAt(detector))
234 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
236 // if we are forced and TLinearFitter doesn't yes exist create it
239 TString name("LFDV");
244 TH2S *lfdv = new TH2S((const Char_t *)name,(const Char_t *) name
247 lfdv->SetXTitle("tan(phi_{track})");
248 lfdv->SetYTitle("dy/dt");
249 lfdv->SetZTitle("Number of clusters");
251 lfdv->SetDirectory(0);
253 fLinearFitterHistoArray.AddAt(lfdv,detector);
256 //______________________________________________________________________________________
257 Bool_t AliTRDCalibraVdriftLinearFit::GetParam(Int_t detector, TVectorD *param)
260 // return param for this detector
262 if ( fLinearFitterPArray.UncheckedAt(detector) ){
263 const TVectorD *vectorP = (TVectorD*)fLinearFitterPArray.UncheckedAt(detector);
264 if(!param) param = new TVectorD(2);
265 for(Int_t k = 0; k < 2; k++){
266 (*param)[k] = (*vectorP)[k];
273 //______________________________________________________________________________________
274 Bool_t AliTRDCalibraVdriftLinearFit::GetError(Int_t detector, TVectorD *error)
277 // return error for this detector
279 if ( fLinearFitterEArray.UncheckedAt(detector) ){
280 const TVectorD *vectorE = (TVectorD*)fLinearFitterEArray.UncheckedAt(detector);
281 if(!error) error = new TVectorD(3);
282 for(Int_t k = 0; k < 3; k++){
283 (*error)[k] = (*vectorE)[k];
290 //______________________________________________________________________________________
291 void AliTRDCalibraVdriftLinearFit::Update(Int_t detector, Float_t tnp, Float_t pars1)
294 // Fill the 2D histos for debugging
297 TH2S *h = ((TH2S *) GetLinearFitterHisto(detector,kTRUE));
298 Double_t nbentries = h->GetEntries();
299 if(nbentries < 5*32767) h->Fill(tnp,pars1);
302 //____________Functions fit Online CH2d________________________________________
303 void AliTRDCalibraVdriftLinearFit::FillPEArray()
306 // Fill fLinearFitterPArray and fLinearFitterEArray from inside
310 Int_t *arrayI = new Int_t[540];
311 for(Int_t k = 0; k< 540; k++){
316 for(Int_t cb = 0; cb < 540; cb++){
317 const TH2S *linearfitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
318 //printf("Processing the detector cb %d we find %d\n",cb, (Bool_t) linearfitterhisto);
320 if ( linearfitterhisto != 0 ){
322 // Fill a linearfitter
323 TAxis *xaxis = linearfitterhisto->GetXaxis();
324 TAxis *yaxis = linearfitterhisto->GetYaxis();
325 TLinearFitter linearfitter = TLinearFitter(2,"pol1");
327 Double_t integral = linearfitterhisto->Integral();
328 //printf("Integral is %f\n",integral);
329 Bool_t securitybreaking = kFALSE;
330 if(TMath::Abs(integral-1199) < 0.00001) securitybreaking = kTRUE;
331 for(Int_t ibinx = 0; ibinx < linearfitterhisto->GetNbinsX(); ibinx++){
332 for(Int_t ibiny = 0; ibiny < linearfitterhisto->GetNbinsY(); ibiny++){
333 if(linearfitterhisto->GetBinContent(ibinx+1,ibiny+1)>0){
334 Double_t x = xaxis->GetBinCenter(ibinx+1);
335 Double_t y = yaxis->GetBinCenter(ibiny+1);
337 for(Int_t k = 0; k < (Int_t)linearfitterhisto->GetBinContent(ibinx+1,ibiny+1); k++){
338 if(!securitybreaking){
339 linearfitter.AddPoint(&x,y);
343 if(arrayI[cb]< 1198){
344 linearfitter.AddPoint(&x,y);
354 //printf("Find %d entries for the detector %d\n",arrayI[cb],cb);
356 // Eval the linear fitter
358 TVectorD *par = new TVectorD(2);
359 TVectorD pare = TVectorD(2);
360 TVectorD *parE = new TVectorD(3);
362 if(((fRobustFit) && (linearfitter.EvalRobust(0.8)==0)) || ((!fRobustFit) && (linearfitter.Eval()==0))) {
363 //if((linearfitter.Eval()==0)) {
364 //printf("Take the param\n");
365 linearfitter.GetParameters(*par);
367 //linearfitter.GetErrors(pare);
368 //Float_t ppointError = TMath::Sqrt(TMath::Abs(linearfitter.GetChisquare())/arrayI[cb]);
369 //(*parE)[0] = pare[0]*ppointError;
370 //(*parE)[1] = pare[1]*ppointError;
374 (*parE)[2] = (Double_t) arrayI[cb];
375 fLinearFitterPArray.AddAt(par,cb);
376 fLinearFitterEArray.AddAt(parE,cb);
381 //printf("Finish\n");
384 //delete linearfitterhisto;