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>
39 #include <TTreeStream.h>
40 #include <TGraphErrors.h>
41 #include <TDirectory.h>
42 #include <TTreeStream.h>
46 #include "AliTRDCalibraVdriftLinearFit.h"
48 ClassImp(AliTRDCalibraVdriftLinearFit) /*FOLD00*/
50 //_____________________________________________________________________
51 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit() : /*FOLD00*/
55 fLinearFitterHistoArray(540),
56 fLinearFitterPArray(540),
57 fLinearFitterEArray(540),
65 // default constructor
68 //_____________________________________________________________________
69 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const AliTRDCalibraVdriftLinearFit &ped) : /*FOLD00*/
71 fVersion(ped.fVersion),
72 fNameCalibUsed(ped.fNameCalibUsed),
73 fLinearFitterHistoArray(540),
74 fLinearFitterPArray(540),
75 fLinearFitterEArray(540),
85 for (Int_t idet = 0; idet < 540; idet++){
87 const TVectorD *vectorE = (TVectorD*)ped.fLinearFitterEArray.UncheckedAt(idet);
88 const TVectorD *vectorP = (TVectorD*)ped.fLinearFitterPArray.UncheckedAt(idet);
89 const TH2S *hped = (TH2S*)ped.fLinearFitterHistoArray.UncheckedAt(idet);
91 if ( vectorE != 0x0 ) fLinearFitterEArray.AddAt(new TVectorD(*vectorE), idet);
92 if ( vectorP != 0x0 ) fLinearFitterPArray.AddAt(new TVectorD(*vectorP), idet);
94 TH2S *hNew = (TH2S *)hped->Clone();
95 //hNew->SetDirectory(0);
96 fLinearFitterHistoArray.AddAt(hNew,idet);
100 //_____________________________________________________________________
101 AliTRDCalibraVdriftLinearFit::AliTRDCalibraVdriftLinearFit(const TObjArray &obja) : /*FOLD00*/
105 fLinearFitterHistoArray(540),
106 fLinearFitterPArray(540),
107 fLinearFitterEArray(540),
115 // constructor from a TObjArray
117 for (Int_t idet = 0; idet < 540; idet++){
118 const TH2S *hped = (TH2S*)obja.UncheckedAt(idet);
120 TH2S *hNew = (TH2S *)hped->Clone();
121 //hNew->SetDirectory(0);
122 fLinearFitterHistoArray.AddAt(hNew,idet);
126 //_____________________________________________________________________
127 AliTRDCalibraVdriftLinearFit& AliTRDCalibraVdriftLinearFit::operator = (const AliTRDCalibraVdriftLinearFit &source)
130 // assignment operator
132 if (&source == this) return *this;
133 new (this) AliTRDCalibraVdriftLinearFit(source);
137 //_____________________________________________________________________
138 AliTRDCalibraVdriftLinearFit::~AliTRDCalibraVdriftLinearFit() /*FOLD00*/
143 fLinearFitterHistoArray.SetOwner();
144 fLinearFitterPArray.SetOwner();
145 fLinearFitterEArray.SetOwner();
147 fLinearFitterHistoArray.Delete();
148 fLinearFitterPArray.Delete();
149 fLinearFitterEArray.Delete();
151 if ( fDebugStreamer ) delete fDebugStreamer;
154 //_____________________________________________________________________________
155 void AliTRDCalibraVdriftLinearFit::Copy(TObject &c) const
161 AliTRDCalibraVdriftLinearFit& target = (AliTRDCalibraVdriftLinearFit &) c;
163 // Copy only the histos
164 for (Int_t idet = 0; idet < 540; idet++){
165 if(fLinearFitterHistoArray.UncheckedAt(idet)){
166 TH2S *hped1 = (TH2S *)target.GetLinearFitterHisto(idet,kTRUE);
167 //hped1->SetDirectory(0);
168 hped1->Add((const TH2S *)fLinearFitterHistoArray.UncheckedAt(idet));
175 //_____________________________________________________________________________
176 Long64_t AliTRDCalibraVdriftLinearFit::Merge(const TCollection* list)
178 // Merge list of objects (needed by PROOF)
186 TIterator* iter = list->MakeIterator();
189 // collection of generated histograms
191 while((obj = iter->Next()) != 0)
193 AliTRDCalibraVdriftLinearFit* entry = dynamic_cast<AliTRDCalibraVdriftLinearFit*>(obj);
194 if (entry == 0) continue;
196 // Copy only the histos
197 for (Int_t idet = 0; idet < 540; idet++){
198 if(entry->GetLinearFitterHisto(idet)){
199 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
200 Double_t entriesa = hped1->GetEntries();
201 Double_t entriesb = ((TH2S *)entry->GetLinearFitterHisto(idet))->GetEntries();
202 if((entriesa + entriesb) < 5*32767) hped1->Add(entry->GetLinearFitterHisto(idet));
211 //_____________________________________________________________________
212 void AliTRDCalibraVdriftLinearFit::Add(const AliTRDCalibraVdriftLinearFit *ped)
220 for (Int_t idet = 0; idet < 540; idet++){
221 const TH2S *hped = (TH2S*)ped->GetLinearFitterHistoNoForce(idet);
222 //printf("idet %d\n",idet);
225 TH2S *hped1 = (TH2S *)GetLinearFitterHisto(idet,kTRUE);
226 Double_t entriesa = hped1->GetEntries();
227 Double_t entriesb = hped->GetEntries();
228 if((entriesa + entriesb) < 5*32767) hped1->Add(hped);
232 //______________________________________________________________________________________
233 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHisto(Int_t detector, Bool_t force)
236 // return pointer to TH2F histo
237 // if force is true create a new histo if it doesn't exist allready
239 if ( !force || fLinearFitterHistoArray.UncheckedAt(detector) )
240 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
242 return GetLinearFitterHistoForce(detector);
245 //______________________________________________________________________________________
246 TH2S* AliTRDCalibraVdriftLinearFit::GetLinearFitterHistoForce(Int_t detector)
249 // return pointer to TH2F histo
250 // if NULL create a new histo if it doesn't exist allready
252 if (fLinearFitterHistoArray.UncheckedAt(detector))
253 return (TH2S*)fLinearFitterHistoArray.UncheckedAt(detector);
255 // if we are forced and TLinearFitter doesn't yes exist create it
258 TString name("LFDV");
263 TH2S *lfdv = new TH2S((const Char_t *)name,(const Char_t *) name
266 lfdv->SetXTitle("tan(phi_{track})");
267 lfdv->SetYTitle("dy/dt");
268 lfdv->SetZTitle("Number of clusters");
270 lfdv->SetDirectory(0);
272 fLinearFitterHistoArray.AddAt(lfdv,detector);
275 //______________________________________________________________________________________
276 Bool_t AliTRDCalibraVdriftLinearFit::GetParam(Int_t detector, TVectorD *param)
279 // return param for this detector
281 if ( fLinearFitterPArray.UncheckedAt(detector) ){
282 const TVectorD *vectorP = (TVectorD*)fLinearFitterPArray.UncheckedAt(detector);
283 if(!param) param = new TVectorD(2);
284 for(Int_t k = 0; k < 2; k++){
285 (*param)[k] = (*vectorP)[k];
292 //______________________________________________________________________________________
293 Bool_t AliTRDCalibraVdriftLinearFit::GetError(Int_t detector, TVectorD *error)
296 // return error for this detector
298 if ( fLinearFitterEArray.UncheckedAt(detector) ){
299 const TVectorD *vectorE = (TVectorD*)fLinearFitterEArray.UncheckedAt(detector);
300 if(!error) error = new TVectorD(3);
301 for(Int_t k = 0; k < 3; k++){
302 (*error)[k] = (*vectorE)[k];
309 //______________________________________________________________________________________
310 void AliTRDCalibraVdriftLinearFit::Update(Int_t detector, Float_t tnp, Float_t pars1)
313 // Fill the 2D histos for debugging
316 TH2S *h = ((TH2S *) GetLinearFitterHisto(detector,kTRUE));
317 Double_t nbentries = h->GetEntries();
318 if(nbentries < 5*32767) h->Fill(tnp,pars1);
321 //____________Functions fit Online CH2d________________________________________
322 void AliTRDCalibraVdriftLinearFit::FillPEArray()
325 // Fill fLinearFitterPArray and fLinearFitterEArray from inside
329 Int_t *arrayI = new Int_t[540];
330 for(Int_t k = 0; k< 540; k++){
335 for(Int_t cb = 0; cb < 540; cb++){
336 const TH2S *linearfitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
337 //printf("Processing the detector cb %d we find %d\n",cb, (Bool_t) linearfitterhisto);
339 if ( linearfitterhisto != 0 ){
341 // Fill a linearfitter
342 TAxis *xaxis = linearfitterhisto->GetXaxis();
343 TAxis *yaxis = linearfitterhisto->GetYaxis();
344 TLinearFitter linearfitter = TLinearFitter(2,"pol1");
346 Double_t integral = linearfitterhisto->Integral();
347 //printf("Integral is %f\n",integral);
348 Bool_t securitybreaking = kFALSE;
349 if(TMath::Abs(integral-1199) < 0.00001) securitybreaking = kTRUE;
350 for(Int_t ibinx = 0; ibinx < linearfitterhisto->GetNbinsX(); ibinx++){
351 for(Int_t ibiny = 0; ibiny < linearfitterhisto->GetNbinsY(); ibiny++){
352 if(linearfitterhisto->GetBinContent(ibinx+1,ibiny+1)>0){
353 Double_t x = xaxis->GetBinCenter(ibinx+1);
354 Double_t y = yaxis->GetBinCenter(ibiny+1);
356 for(Int_t k = 0; k < (Int_t)linearfitterhisto->GetBinContent(ibinx+1,ibiny+1); k++){
357 if(!securitybreaking){
358 linearfitter.AddPoint(&x,y);
362 if(arrayI[cb]< 1198){
363 linearfitter.AddPoint(&x,y);
373 //printf("Find %d entries for the detector %d\n",arrayI[cb],cb);
375 // Eval the linear fitter
377 TVectorD *par = new TVectorD(2);
378 TVectorD pare = TVectorD(2);
379 TVectorD *parE = new TVectorD(3);
381 if(((fRobustFit) && (linearfitter.EvalRobust(0.8)==0)) || ((!fRobustFit) && (linearfitter.Eval()==0))) {
382 //if((linearfitter.Eval()==0)) {
383 //printf("Take the param\n");
384 linearfitter.GetParameters(*par);
386 //linearfitter.GetErrors(pare);
387 //Float_t ppointError = TMath::Sqrt(TMath::Abs(linearfitter.GetChisquare())/arrayI[cb]);
388 //(*parE)[0] = pare[0]*ppointError;
389 //(*parE)[1] = pare[1]*ppointError;
393 (*parE)[2] = (Double_t) arrayI[cb];
394 fLinearFitterPArray.AddAt(par,cb);
395 fLinearFitterEArray.AddAt(parE,cb);
400 //printf("Finish\n");
403 //delete linearfitterhisto;
413 //____________Functions fit Online CH2d________________________________________
414 void AliTRDCalibraVdriftLinearFit::FillPEArray2()
417 // Fill fFitterPArray and fFitterEArray from inside
421 TF1 *f1 = new TF1("f1","[0]+[1]*x",-1,1);
423 for(Int_t cb = 0; cb < 540; cb++){
424 //const TH2S *fitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
425 TH2S *fitterhisto = (TH2S*)fLinearFitterHistoArray.UncheckedAt(cb);
426 //printf("Processing the detector cb %d we find %d\n",cb, (Bool_t) fitterhisto);
428 if ( fitterhisto != 0 ){
431 TGraphErrors *gg=DrawMS(fitterhisto,nEntries);
433 // Number of points of the TGraphErrors
434 //printf("Number of points %d for detector %d\n",gg->GetN(),cb);
435 if(gg->GetN() < fMinNpointsFit) {
439 //printf("det %d, number of points %d, nEntries %d\n",cb,gg->GetN(),nEntries);
442 TVectorD *par = new TVectorD(2);
443 TVectorD *parE = new TVectorD(3);
446 (*parE)[2] = (Double_t) nEntries;
447 (*par)[0] = f1->GetParameter(0);
448 (*par)[1] = f1->GetParameter(1);
449 fLinearFitterPArray.AddAt(par,cb);
450 fLinearFitterEArray.AddAt(parE,cb);
451 //printf("Value %f for detector %d\n",(*par)[1],cb);
457 if(cb==fSeeDetector) {
458 gStyle->SetPalette(1);
459 gStyle->SetOptStat(1111);
460 gStyle->SetPadBorderMode(0);
461 gStyle->SetCanvasColor(10);
462 gStyle->SetPadLeftMargin(0.13);
463 gStyle->SetPadRightMargin(0.01);
464 TCanvas *stat = new TCanvas("stat","",50,50,600,800);
466 fitterhisto->Draw("colz");
474 if(fDebugLevel==0) delete f1;
477 //_________Helper function__________________________________________________
478 TGraphErrors* AliTRDCalibraVdriftLinearFit::DrawMS(const TH2 *const h2, Int_t &nEntries)
484 TF1 fg("fg", "gaus", -10., 30.);
485 TGraphErrors *gp = new TGraphErrors();
487 TAxis *ax(h2->GetXaxis());
488 TAxis *ay(h2->GetYaxis());
490 for(Int_t ipt(0), jpt(1), ig(0); ipt<ax->GetNbins(); ipt++, jpt++){
491 h1 = h2->ProjectionY("py", jpt, jpt);
492 fg.SetParameter(1, h1->GetMean());
493 //Float_t x(ax->GetBinCenter(jpt));
494 Int_t n=Int_t(h1->Integral(1, h1->GetNbinsX()));
497 //Warning("drawMS()", Form("reject x[%d]=%f on n=%d", jpt, x, n));
500 h1->Fit(&fg, "WWQ0");
502 //Warning("drawMS()", Form("reject x[%d]=%f on NDF=%d", jpt, x, fg.GetNDF()));
505 if(((fg.GetParameter(1)+fg.GetParameter(2)/2)>ay->GetXmax()) || ((fg.GetParameter(1)-fg.GetParameter(2)/2)<ay->GetXmin()) || (TMath::Abs(fg.GetParameter(0))< 0.00001)) continue;
506 gp->SetPoint(ig, ax->GetBinCenter(jpt), fg.GetParameter(1));
507 gp->SetPointError(ig, 0, TMath::Sqrt(pow(fg.GetParError(1),2) + (1/pow(fg.GetParameter(0),2))));