TRD/qaRec/AliTRDtrackingResolution.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
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   6 *                                                                        *
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  11 * appear in the supporting documentation. The authors make no claims     *
  12 * about the suitability of this software for any purpose. It is          *
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  14 **************************************************************************/
  15
  16 /* $Id: AliTRDtrackingResolution.cxx 27496 2008-07-22 08:35:45Z cblume $ */
  17
  18 ////////////////////////////////////////////////////////////////////////////
  19 //                                                                        //
  20 //  TRD tracking resolution                                               //
  21 //
  22 // The class performs resolution and residual studies
  23 // of the TRD tracks for the following quantities :
  24 //   - spatial position (y, [z])
  25 //   - angular (phi) tracklet
  26 //   - momentum at the track level
  27 //
  28 // The class has to be used for regular detector performance checks using the official macros:
  29 //   - $ALICE_ROOT/TRD/qaRec/run.C
  30 //   - $ALICE_ROOT/TRD/qaRec/makeResults.C
  31 //
  32 // For stand alone usage please refer to the following example:
  33 // {
  34 //   gSystem->Load("libANALYSIS.so");
  35 //   gSystem->Load("libTRDqaRec.so");
  36 //   AliTRDtrackingResolution *res = new AliTRDtrackingResolution();
  37 //   //res->SetMCdata();
  38 //   //res->SetVerbose();
  39 //   //res->SetVisual();
  40 //   res->Load("TRD.TaskResolution.root");
  41 //   if(!res->PostProcess()) return;
  42 //   res->GetRefFigure(0);
  43 // }
  44 //
  45 //  Authors:                                                              //
  46 //    Alexandru Bercuci <A.Bercuci@gsi.de>                                //
  47 //    Markus Fasel <M.Fasel@gsi.de>                                       //
  48 //                                                                        //
  49 ////////////////////////////////////////////////////////////////////////////
  50
  51 #include <cstring>
  52
  53 #include <TSystem.h>
  54 #include <TObjArray.h>
  55 #include <TH2.h>
  56 #include <TH1.h>
  57 #include <TF1.h>
  58 #include <TCanvas.h>
  59 #include <TProfile.h>
  60 #include <TGraphErrors.h>
  61 #include <TMath.h>
  62 #include "TTreeStream.h"
  63 #include "TGeoManager.h"
  64
  65 #include "AliAnalysisManager.h"
  66 #include "AliTrackReference.h"
  67 #include "AliTrackPointArray.h"
  68 #include "AliCDBManager.h"
  69
  70 #include "AliTRDSimParam.h"
  71 #include "AliTRDgeometry.h"
  72 #include "AliTRDpadPlane.h"
  73 #include "AliTRDcluster.h"
  74 #include "AliTRDseedV1.h"
  75 #include "AliTRDtrackV1.h"
  76 #include "AliTRDtrackerV1.h"
  77 #include "AliTRDReconstructor.h"
  78 #include "AliTRDrecoParam.h"
  79
  80 #include "AliTRDtrackInfo/AliTRDtrackInfo.h"
  81 #include "AliTRDtrackingResolution.h"
  82
  83 ClassImp(AliTRDtrackingResolution)
  84
  85 //________________________________________________________
  86 AliTRDtrackingResolution::AliTRDtrackingResolution()
  87   :AliTRDrecoTask("Resolution", "Tracking Resolution")
  88   ,fStatus(0)
  89   ,fReconstructor(0x0)
  90   ,fGeo(0x0)
  91   ,fGraphS(0x0)
  92   ,fGraphM(0x0)
  93 {
  94   fReconstructor = new AliTRDReconstructor();
  95   fReconstructor->SetRecoParam(AliTRDrecoParam::GetLowFluxParam());
  96   fGeo = new AliTRDgeometry();
  97   InitFunctorList();
  98 }
  99
 100 //________________________________________________________
 101 AliTRDtrackingResolution::~AliTRDtrackingResolution()
 102 {
 103   if(fGraphS){fGraphS->Delete(); delete fGraphS;}
 104   if(fGraphM){fGraphM->Delete(); delete fGraphM;}
 105   delete fGeo;
 106   delete fReconstructor;
 107   if(gGeoManager) delete gGeoManager;
 108 }
 109
 110
 111 //________________________________________________________
 112 void AliTRDtrackingResolution::CreateOutputObjects()
 113 {
 114   // spatial resolution
 115   OpenFile(0, "RECREATE");
 116
 117   fContainer = Histos();
 118 }
 119
 120 // //________________________________________________________
 121 // void AliTRDtrackingResolution::Exec(Option_t *)
 122 // {
 123 //   // spatial Resolution: res = pos_{Tracklet}(x = x_{Anode wire}) - pos_{TrackRef}(x = x_{Anode wire})
 124 //   // angular Resolution: res = Tracklet angle - TrackRef Angle
 125 //
 126 //   Int_t nTrackInfos = fTracks->GetEntriesFast();
 127 //   if(fDebugLevel>=2 && nTrackInfos){
 128 //     printf("Event[%d] TrackInfos[%d]\n", (Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry(), nTrackInfos);
 129 //   }
 130 //   const Int_t kNLayers = AliTRDgeometry::kNlayer;
 131 //   Int_t pdg, nly, ncrs;
 132 //   Double_t p, dy, theta/*, dphi, dymc, dzmc, dphimc*/;
 133 //   Float_t fP[kNLayers], fX[kNLayers], fY[kNLayers], fZ[kNLayers], fPhi[kNLayers], fTheta[kNLayers]; // phi/theta angle per layer
 134 //   Bool_t fMCMap[kNLayers], fLayerMap[kNLayers]; // layer map
 135 //
 136 //   AliTRDpadPlane *pp = 0x0;
 137 //   AliTrackPoint tr[kNLayers], tk[kNLayers];
 138 //   AliExternalTrackParam *fOp = 0x0;
 139 //   AliTRDtrackV1 *fTrack = 0x0;
 140 //   AliTRDtrackInfo *fInfo = 0x0;
 141 //   for(Int_t iTI = 0; iTI < nTrackInfos; iTI++){
 142 //     // check if ESD and MC-Information are available
 143 //     if(!(fInfo = dynamic_cast<AliTRDtrackInfo *>(fTracks->UncheckedAt(iTI)))) continue;
 144 //     if(!(fTrack = fInfo->GetTrack())) continue;
 145 //     if(!(fOp = fInfo->GetOuterParam())) continue;
 146 //     pdg = fInfo->GetPDG();
 147 //     nly = 0; ncrs = 0; theta = 0.;
 148 //
 149 //     if(fDebugLevel>=3) printf("\tDoing track[%d] NTrackRefs[%d]\n", iTI, fInfo->GetNTrackRefs());
 150 //
 151 //     p = fOp->P();
 152 //     Int_t npts = 0;
 153 //     memset(fP, 0, kNLayers*sizeof(Float_t));
 154 //     memset(fX, 0, kNLayers*sizeof(Float_t));
 155 //     memset(fY, 0, kNLayers*sizeof(Float_t));
 156 //     memset(fZ, 0, kNLayers*sizeof(Float_t));
 157 //     memset(fPhi, 0, kNLayers*sizeof(Float_t));
 158 //     memset(fTheta, 0, kNLayers*sizeof(Float_t));
 159 //     memset(fLayerMap, 0, kNLayers*sizeof(Bool_t));
 160 //     memset(fMCMap, 0, kNLayers*sizeof(Bool_t));
 161 //     AliTRDseedV1 *fTracklet = 0x0;
 162 //     for(Int_t iplane = 0; iplane < kNLayers; iplane++){
 163 //       if(!(fTracklet = fTrack->GetTracklet(iplane))) continue;
 164 //       if(!fTracklet->IsOK()) continue;
 165 //
 166 //       // Book point arrays
 167 //       fLayerMap[iplane] = kTRUE;
 168 //       tr[npts].SetXYZ(fTracklet->GetX0(), 0., 0.);
 169 //       tk[npts].SetXYZ(fTracklet->GetX0(), fTracklet->GetYfit(0), fTracklet->GetZfit(0));
 170 //       npts++;
 171 //
 172 //       if(fDebugLevel>=4) printf("\t\tLy[%d] X0[%6.3f] Ncl[%d]\n", iplane, fTracklet->GetX0(), fTracklet->GetN());
 173 //
 174 //       // define reference values
 175 //       fP[iplane]   = p;
 176 //       fX[iplane]   = fTracklet->GetX0();
 177 //       fY[iplane]   = fTracklet->GetYref(0);
 178 //       fZ[iplane]   = fTracklet->GetZref(0);
 179 //       fPhi[iplane] = TMath::ATan(fTracklet->GetYref(1));
 180 //       fTheta[iplane] = TMath::ATan(fTracklet->GetZref(1));
 181 //
 182 //
 183 //       // RESOLUTION (compare to MC)
 184 //       if(HasMCdata()){
 185 //         if(fInfo->GetNTrackRefs() >= 2){
 186 //           Double_t pmc, ymc, zmc, phiMC, thetaMC;
 187 //           if(Resolution(fTracklet, fInfo, pmc, ymc, zmc, phiMC, thetaMC)){
 188 //             fMCMap[iplane] = kTRUE;
 189 //             fP[iplane]     = pmc;
 190 //             fY[iplane]     = ymc;
 191 //             fZ[iplane]     = zmc;
 192 //             fPhi[iplane]   = phiMC;
 193 //             fTheta[iplane] = thetaMC;
 194 //           }
 195 //         }
 196 //       }
 197 //       Float_t phi   = fPhi[iplane]*TMath::RadToDeg();
 198 //       theta += fTheta[iplane]; nly++;
 199 //       if(fTracklet->GetNChange()) ncrs++;
 200 //
 201 //       // Do clusters residuals
 202 //       if(!fTracklet->Fit(kFALSE)) continue;
 203 //       AliTRDcluster *c = 0x0;
 204 //       for(Int_t ic=AliTRDseed::knTimebins-1; ic>=0; ic--){
 205 //         if(!(c = fTracklet->GetClusters(ic))) continue;
 206 //
 207 //         dy = fTracklet->GetYat(c->GetX()) - c->GetY();
 208 //         ((TH2I*)fContainer->At(kClusterYResidual))->Fill(phi, dy);
 209 //
 210 //         if(fDebugLevel>=2){
 211 //           Float_t q = c->GetQ();
 212 //           // Get z-position with respect to anode wire
 213 //           AliTRDSimParam    *simParam    = AliTRDSimParam::Instance();
 214 //           Int_t det = c->GetDetector();
 215 //           Float_t x = c->GetX();
 216 //           Float_t z = fZ[iplane]-(fX[iplane]-x)*TMath::Tan(fTheta[iplane]);
 217 //           Int_t stack = fGeo->GetStack(det);
 218 //           pp = fGeo->GetPadPlane(iplane, stack);
 219 //           Float_t row0 = pp->GetRow0();
 220 //           Float_t d  =  row0 - z + simParam->GetAnodeWireOffset();
 221 //           d -= ((Int_t)(2 * d)) / 2.0;
 222 //           if (d > 0.25) d  = 0.5 - d;
 223 //
 224 //           (*fDebugStream) << "ResidualClusters"
 225 //             << "ly="   << iplane
 226 //             << "stk="  << stack
 227 //             << "pdg="  << pdg
 228 //             << "phi="  << fPhi[iplane]
 229 //             << "tht="  << fTheta[iplane]
 230 //             << "q="    << q
 231 //             << "x="    << x
 232 //             << "z="    << z
 233 //             << "d="    << d
 234 //             << "dy="   << dy
 235 //             << "\n";
 236 //         }
 237 //       }
 238 //       pp = 0x0;
 239 //     }
 240 //     if(nly) theta /= nly;
 241 //     if(fDebugLevel>=1){
 242 //       (*fDebugStream) << "TrackStatistics"
 243 //         << "nly="   << nly
 244 //         << "ncrs="  << ncrs
 245 //         << "tht="   << theta
 246 //         << "\n";
 247 //     }
 248 //
 249 //
 250 // //     // this protection we might drop TODO
 251 // //     if(fTrack->GetNumberOfTracklets() < 6) continue;
 252 // //
 253 // //     AliTRDtrackerV1::FitRiemanTilt(fTrack, 0x0, kTRUE, npts, tr);
 254 // //     Int_t iref = 0;
 255 // //     for(Int_t ip=0; ip<kNLayers; ip++){
 256 // //       if(!fLayerMap[ip]) continue;
 257 // //       fTracklet = fTrack->GetTracklet(ip);
 258 // //       // recalculate fit based on the new tilt correction
 259 // //       fTracklet->Fit();
 260 // //
 261 // //       dy = fTracklet->GetYfit(0) - tr[iref].GetY();
 262 // //       ((TH2I*)fContainer->At(kTrackletRiemanYResidual))->Fill(fPhi[ip]*TMath::RadToDeg(), dy);
 263 // //
 264 // //       dphi = fTracklet->GetYfit(1)- fTracklet->GetYref(1);
 265 // //       ((TH2I*)fContainer->At(kTrackletRiemanAngleResidual))->Fill(fPhi[ip]*TMath::RadToDeg(), dphi);
 266 // //
 267 // //       if(HasMCdata()){
 268 // //         dymc = fY[ip] - tr[iref].GetY();
 269 // //         ((TH2I*)fContainer->At(kTrackRYResolution))->Fill(fPhi[ip]*TMath::RadToDeg(), dymc);
 270 // //
 271 // //         dzmc = fZ[ip] - tr[iref].GetZ();
 272 // //         ((TH2I*)fContainer->At(kTrackRZResolution))->Fill(fPhi[ip]*TMath::RadToDeg(), dzmc);
 273 // //
 274 // //         dphimc = fPhi[ip] - fTracklet->GetYfit(1);
 275 // //         ((TH2I*)fContainer->At(kTrackRAngleResolution))->Fill(fPhi[ip]*TMath::RadToDeg(), dphimc);
 276 // //       }
 277 // //
 278 // //       iref++;
 279 // //
 280 // //       if(fDebugLevel>=1){
 281 // //         (*fDebugStream) << "RiemannTrack"
 282 // //           << "ly="    << ip
 283 // //           << "mc="    << fMCMap[ip]
 284 // //           << "p="     << fP[ip]
 285 // //           << "phi="   << fPhi[ip]
 286 // //           << "tht="   << fTheta[ip]
 287 // //           << "dy="    << dy
 288 // //           << "dphi="  << dphi
 289 // //           << "dymc="  << dymc
 290 // //           << "dzmc="  << dzmc
 291 // //           << "dphimc="<< dphimc
 292 // //           << "\n";
 293 // //       }
 294 // //     }
 295 //
 296 // //  if(!gGeoManager) TGeoManager::Import("geometry.root");
 297 // //     AliTRDtrackerV1::FitKalman(fTrack, 0x0, kFALSE, nc, tr);
 298 // //     for(Int_t ip=0; ip<nc; ip++){
 299 // //       dy = cl[ip].GetY() - tr[ip].GetY();
 300 // //      ((TH2I*)fContainer->At(kTrackletKalmanYResidual))->Fill(phi*TMath::RadToDeg(), dy);
 301 // //       dz = cl[ip].GetZ() - tr[ip].GetZ();
 302 // //       if(fDebugLevel>=1){
 303 // //         (*fDebugStream) << "KalmanTrack"
 304 // //           << "dy="                  << dy
 305 // //           << "dz="                  << dz
 306 // // /*          << "phi="                     << phi
 307 // //           << "theta="             << theta
 308 // //           << "dphi="              << dphi*/
 309 // //           << "\n";
 310 // //       }
 311 // //     }
 312 //
 313 //
 314 //   }
 315 //   PostData(0, fContainer);
 316 // }
 317
 318 //________________________________________________________
 319 TH1* AliTRDtrackingResolution::PlotClusterResiduals(const AliTRDtrackV1 *track)
 320 {
 321   if(track) fTrack = track;
 322   if(!fTrack){
 323     AliWarning("No Track defined.");
 324     return 0x0;
 325   }
 326   TH1 *h = 0x0;
 327   if(!(h = ((TH2I*)fContainer->At(kClusterResidual)))){
 328     AliWarning("No output histogram defined.");
 329     return 0x0;
 330   }
 331
 332   Int_t pdg = fMC ? fMC->GetPDG() : 0;
 333   Float_t x0, y0, z0, dy, dydx, dzdx;
 334   AliTRDseedV1 *fTracklet = 0x0;
 335   for(Int_t ily=0; ily<AliTRDgeometry::kNlayer; ily++){
 336     if(!(fTracklet = fTrack->GetTracklet(ily))) continue;
 337     if(!fTracklet->IsOK()) continue;
 338     x0 = fTracklet->GetX0();
 339
 340     // retrive the track angle with the chamber
 341     if(fMC) fMC->GetDirections(x0, y0, z0, dydx, dzdx);
 342     else{
 343       y0   = fTracklet->GetYref(0);
 344       z0   = fTracklet->GetZref(0);
 345       dydx = fTracklet->GetYref(1);
 346       dzdx = fTracklet->GetZref(1);
 347     }
 348
 349     AliTRDseedV1 trklt(*fTracklet);
 350     if(!trklt.Fit(kFALSE)) continue;
 351
 352     AliTRDcluster *c = 0x0;
 353     fTracklet->ResetClusterIter(kFALSE);
 354     while((c = fTracklet->PrevCluster())){
 355       dy = trklt.GetYat(c->GetX()) - c->GetY();
 356       h->Fill(dydx, dy);
 357
 358       if(fDebugLevel>=1){
 359         Float_t q = c->GetQ();
 360         // Get z-position with respect to anode wire
 361         AliTRDSimParam    *simParam    = AliTRDSimParam::Instance();
 362         Int_t det = c->GetDetector();
 363         Float_t x = c->GetX();
 364         Float_t z = z0-(x0-x)*dzdx;
 365         Int_t istk = fGeo->GetStack(det);
 366         AliTRDpadPlane *pp = fGeo->GetPadPlane(ily, istk);
 367         Float_t row0 = pp->GetRow0();
 368         Float_t d  =  row0 - z + simParam->GetAnodeWireOffset();
 369         d -= ((Int_t)(2 * d)) / 2.0;
 370         if (d > 0.25) d  = 0.5 - d;
 371
 372         (*fDebugStream) << "ClusterResidual"
 373           << "ly="   << ily
 374           << "stk="  << istk
 375           << "pdg="  << pdg
 376           << "dydx=" << dydx
 377           << "dzdx=" << dzdx
 378           << "q="    << q
 379           << "x="    << x
 380           << "z="    << z
 381           << "d="    << d
 382           << "dy="   << dy
 383           << "\n";
 384       }
 385     }
 386   }
 387   return h;
 388 }
 389
 390 //________________________________________________________
 391 TH1* AliTRDtrackingResolution::PlotResolution(const AliTRDtrackV1 *track)
 392 {
 393   if(!fMC){
 394     AliWarning("No MC defined. Results will not be available.");
 395     return 0x0;
 396   }
 397   if(track) fTrack = track;
 398   if(!fTrack){
 399     AliWarning("No Track defined.");
 400     return 0x0;
 401   }
 402   TH1 *h = 0x0;
 403   if(!(h = ((TH2I*)fContainer->At(kClusterResolution)))){
 404     AliWarning("No output histogram defined.");
 405     return 0x0;
 406   }
 407   if(!(h = ((TH2I*)fContainer->At(kTrackletYResolution)))){
 408     AliWarning("No output histogram defined.");
 409     return 0x0;
 410   }
 411   if(!(h = ((TH2I*)fContainer->At(kTrackletZResolution)))){
 412     AliWarning("No output histogram defined.");
 413     return 0x0;
 414   }
 415   if(!(h = ((TH2I*)fContainer->At(kTrackletAngleResolution)))){
 416     AliWarning("No output histogram defined.");
 417     return 0x0;
 418   }
 419   //printf("called for %d tracklets ... \n", fTrack->GetNumberOfTracklets());
 420   Int_t pdg = fMC->GetPDG(), det=-1;
 421   Float_t x0, y0, z0, dy, dydx, dzdx;
 422   AliTRDseedV1 *fTracklet = 0x0;
 423   for(Int_t ily=0; ily<AliTRDgeometry::kNlayer; ily++){
 424     if(!(fTracklet = fTrack->GetTracklet(ily))) continue;
 425     if(!fTracklet->IsOK()) continue;
 426     //printf("process layer[%d]\n", ily);
 427     // retrive the track position and direction within the chamber
 428     det = fTracklet->GetDetector();
 429     x0  = fTracklet->GetX0();
 430     fMC->GetDirections(x0, y0, z0, dydx, dzdx);
 431
 432     // recalculate tracklet based on the MC info
 433     AliTRDseedV1 tt(*fTracklet);
 434     tt.SetZref(0, z0);
 435     tt.SetZref(1, dzdx);
 436     if(!tt.Fit()) continue;
 437     dy = tt.GetYfit(0) - y0;
 438     Float_t dphi   = TMath::ATan(tt.GetYfit(1)) - TMath::ATan(dydx);
 439     Float_t dz = 100.;
 440     Bool_t  cross = fTracklet->GetNChange();
 441     if(cross){
 442       Double_t *xyz = tt.GetCrossXYZ();
 443       dz = xyz[2] - (z0 - (x0 - xyz[0])*dzdx) ;
 444       ((TH2I*)fContainer->At(kTrackletYResolution))->Fill(dzdx, dz);
 445     }
 446
 447     // Fill Histograms
 448     ((TH2I*)fContainer->At(kTrackletYResolution))->Fill(dydx, dy);
 449     ((TH2I*)fContainer->At(kTrackletAngleResolution))->Fill(dydx, dphi*TMath::RadToDeg());
 450
 451     // Fill Debug stream
 452     if(fDebugLevel>=1){
 453       Float_t p = fMC->GetTrackRef() ? fMC->GetTrackRef()->P() : -1.;
 454       (*fDebugStream) << "TrkltResolution"
 455         << "det="                 << det
 456         << "pdg="     << pdg
 457         << "p="       << p
 458         << "ymc="     << y0
 459         << "zmc="     << z0
 460         << "dydx="    << dydx
 461         << "dzdx="    << dzdx
 462         << "cross="   << cross
 463         << "dy="                  << dy
 464         << "dz="                  << dz
 465         << "dphi="              << dphi
 466         << "\n";
 467     }
 468
 469     Int_t istk = AliTRDgeometry::GetStack(det);
 470     AliTRDpadPlane *pp = fGeo->GetPadPlane(ily, istk);
 471     Float_t zr0 = pp->GetRow0() + AliTRDSimParam::Instance()->GetAnodeWireOffset();
 472     Float_t tilt = fTracklet->GetTilt();
 473
 474     AliTRDcluster *c = 0x0;
 475     fTracklet->ResetClusterIter(kFALSE);
 476     while((c = fTracklet->PrevCluster())){
 477       Float_t  q = TMath::Abs(c->GetQ());
 478       Float_t xc = c->GetX();
 479       Float_t yc = c->GetY();
 480       Float_t zc = c->GetZ();
 481       Float_t dx = x0 - xc;
 482       Float_t yt = y0 - dx*dydx;
 483       Float_t zt = z0 - dx*dzdx;
 484       dy = yt - (yc - tilt*(zc-zt));
 485
 486       // Fill Histograms
 487       if(q>100.) ((TH2I*)fContainer->At(kClusterResolution))->Fill(dydx, dy);
 488
 489       // Fill Debug Tree
 490       if(fDebugLevel>=1){
 491         Float_t d = zr0 - zt;
 492         d -= ((Int_t)(2 * d)) / 2.0;
 493         if (d > 0.25) d  = 0.5 - d;
 494
 495         (*fDebugStream) << "ClusterResolution"
 496           << "ly="   << ily
 497           << "stk="  << istk
 498           << "pdg="  << pdg
 499           << "dydx=" << dydx
 500           << "dzdx=" << dzdx
 501           << "q="    << q
 502           << "d="    << d
 503           << "dy="   << dy
 504           << "\n";
 505       }
 506     }
 507   }
 508   return h;
 509 }
 510
 511
 512 //________________________________________________________
 513 void AliTRDtrackingResolution::GetRefFigure(Int_t ifig)
 514 {
 515   TAxis *ax = 0x0;
 516   TGraphErrors *g = 0x0;
 517   switch(ifig){
 518   case kClusterResidual:
 519     if(!(g = (TGraphErrors*)fGraphS->At(ifig))) break;
 520     g->Draw("apl");
 521     ax = g->GetHistogram()->GetYaxis();
 522     ax->SetRangeUser(-.5, 1.);
 523     ax->SetTitle("Clusters Y Residuals #sigma/#mu [mm]");
 524     ax = g->GetHistogram()->GetXaxis();
 525     ax->SetTitle("tg(#phi)");
 526     if(!(g = (TGraphErrors*)fGraphM->At(ifig))) break;
 527     g->Draw("pl");
 528     return;
 529   case kClusterResolution:
 530     if(!(g = (TGraphErrors*)fGraphS->At(ifig))) break;
 531     ax = g->GetHistogram()->GetYaxis();
 532     ax->SetRangeUser(-.5, 1.);
 533     ax->SetTitle("Cluster Y Resolution #sigma/#mu [mm]");
 534     ax = g->GetHistogram()->GetXaxis();
 535     ax->SetTitle("tg(#phi)");
 536     g->Draw("apl");
 537     if(!(g = (TGraphErrors*)fGraphM->At(ifig))) break;
 538     g->Draw("pl");
 539     return;
 540   case kTrackletYResolution:
 541     if(!(g = (TGraphErrors*)fGraphS->At(ifig))) break;
 542     ax = g->GetHistogram()->GetYaxis();
 543     ax->SetRangeUser(-.5, 1.);
 544     ax->SetTitle("Tracklet Y Resolution #sigma/#mu [mm]");
 545     ax = g->GetHistogram()->GetXaxis();
 546     ax->SetTitle("#tg(phi)");
 547     g->Draw("apl");
 548     if(!(g = (TGraphErrors*)fGraphM->At(ifig))) break;
 549     g->Draw("pl");
 550     return;
 551   case kTrackletZResolution:
 552     if(!(g = (TGraphErrors*)fGraphS->At(ifig))) break;
 553     ax = g->GetHistogram()->GetYaxis();
 554     ax->SetRangeUser(-.5, 1.);
 555     ax->SetTitle("Tracklet Z Resolution #sigma/#mu [mm]");
 556     ax = g->GetHistogram()->GetXaxis();
 557     ax->SetTitle("#tg(theta)");
 558     g->Draw("apl");
 559     if(!(g = (TGraphErrors*)fGraphM->At(ifig))) break;
 560     g->Draw("pl");
 561     return;
 562   case kTrackletAngleResolution:
 563     if(!(g = (TGraphErrors*)fGraphS->At(ifig))) break;
 564     ax = g->GetHistogram()->GetYaxis();
 565     ax->SetRangeUser(-.05, .2);
 566     ax->SetTitle("Tracklet Angular Resolution #sigma/#mu [deg]");
 567     ax = g->GetHistogram()->GetXaxis();
 568     ax->SetTitle("tg(#phi)");
 569     g->Draw("apl");
 570     if(!(g = (TGraphErrors*)fGraphM->At(ifig))) break;
 571     g->Draw("pl");
 572     return;
 573   default:
 574     AliInfo(Form("Reference plot [%d] not implemented yet", ifig));
 575     return;
 576   }
 577   AliInfo(Form("Reference plot [%d] missing result", ifig));
 578 }
 579
 580
 581 //________________________________________________________
 582 Bool_t AliTRDtrackingResolution::PostProcess()
 583 {
 584   //fContainer = dynamic_cast<TObjArray*>(GetOutputData(0));
 585   if (!fContainer) {
 586     Printf("ERROR: list not available");
 587     return kFALSE;
 588   }
 589   fNRefFigures = fContainer->GetEntriesFast();
 590   if(!fGraphS){
 591     fGraphS = new TObjArray(fNRefFigures);
 592     fGraphS->SetOwner();
 593   }
 594   if(!fGraphM){
 595     fGraphM = new TObjArray(fNRefFigures);
 596     fGraphM->SetOwner();
 597   }
 598
 599   TH2I *h2 = 0x0;
 600   TH1D *h = 0x0;
 601   TGraphErrors *gm = 0x0, *gs = 0x0;
 602
 603   // define models
 604   TF1 f("f1", "gaus", -.5, .5);
 605
 606   TF1 fb("fb", "[0]*exp(-0.5*((x-[1])/[2])**2)+[3]", -.5, .5);
 607
 608   TF1 fc("fc", "[0]*exp(-0.5*((x-[1])/[2])**2)+[3]*exp(-0.5*((x-[4])/[5])**2)", -.5, .5);
 609
 610   TCanvas *c = 0x0;
 611   if(IsVisual()) c = new TCanvas("c", Form("%s Visual", GetName()), 500, 500);
 612   char opt[5];
 613   sprintf(opt, "%c%c", IsVerbose() ? ' ' : 'Q', IsVisual() ? ' ': 'N');
 614
 615
 616   //PROCESS RESIDUAL DISTRIBUTIONS
 617
 618   // Clusters residuals
 619   h2 = (TH2I *)(fContainer->At(kClusterResidual));
 620   gm = new TGraphErrors(h2->GetNbinsX());
 621   gm->SetLineColor(kBlue);
 622   gm->SetMarkerStyle(7);
 623   gm->SetMarkerColor(kBlue);
 624   gm->SetNameTitle("clm", "");
 625   fGraphM->AddAt(gm, kClusterResidual);
 626   gs = new TGraphErrors(h2->GetNbinsX());
 627   gs->SetLineColor(kRed);
 628   gs->SetMarkerStyle(23);
 629   gs->SetMarkerColor(kRed);
 630   gs->SetNameTitle("cls", "");
 631   fGraphS->AddAt(gs, kClusterResidual);
 632   for(Int_t ibin = 1; ibin <= h2->GetNbinsX(); ibin++){
 633     Double_t phi = h2->GetXaxis()->GetBinCenter(ibin);
 634     h = h2->ProjectionY("py", ibin, ibin);
 635     AdjustF1(h, &fc);
 636
 637     if(IsVisual()){c->cd(); c->SetLogy();}
 638     h->Fit(&fc, opt, "", -0.5, 0.5);
 639     if(IsVisual()){c->Modified(); c->Update(); gSystem->Sleep(500);}
 640
 641     gm->SetPoint(ibin - 1, TMath::Tan(phi*TMath::DegToRad()), 10.*fc.GetParameter(1));
 642     gm->SetPointError(ibin - 1, 0., 10.*fc.GetParError(1));
 643     gs->SetPoint(ibin - 1, TMath::Tan(phi*TMath::DegToRad()), 10.*fc.GetParameter(2));
 644     gs->SetPointError(ibin - 1, 0., 10.*fc.GetParError(2));
 645   }
 646
 647
 648   //PROCESS RESOLUTION DISTRIBUTIONS
 649
 650   if(HasMCdata()){
 651     // cluster y resolution
 652     h2 = (TH2I*)fContainer->At(kClusterResolution);
 653     gm = new TGraphErrors(h2->GetNbinsX());
 654     gm->SetLineColor(kBlue);
 655     gm->SetMarkerStyle(7);
 656     gm->SetMarkerColor(kBlue);
 657     gm->SetNameTitle("clym", "");
 658     fGraphM->AddAt(gm, kClusterResolution);
 659     gs = new TGraphErrors(h2->GetNbinsX());
 660     gs->SetLineColor(kRed);
 661     gs->SetMarkerStyle(23);
 662     gs->SetMarkerColor(kRed);
 663     gs->SetNameTitle("clys", "");
 664     fGraphS->AddAt(gs, kClusterResolution);
 665     for(Int_t iphi=1; iphi<=h2->GetNbinsX(); iphi++){
 666       h = h2->ProjectionY("py", iphi, iphi);
 667       AdjustF1(h, &fb);
 668
 669       if(IsVisual()){c->cd(); c->SetLogy();}
 670       h->Fit(&fb, opt, "", -0.5, 0.5);
 671       if(IsVisual()){c->Modified(); c->Update(); gSystem->Sleep(500);}
 672
 673       Double_t phi = h2->GetXaxis()->GetBinCenter(iphi);
 674       Int_t jphi = iphi -1;
 675       gm->SetPoint(jphi, TMath::Tan(phi*TMath::DegToRad()), 10.*fb.GetParameter(1));
 676       gm->SetPointError(jphi, 0., 10.*fb.GetParError(1));
 677       gs->SetPoint(jphi, TMath::Tan(phi*TMath::DegToRad()), 10.*fb.GetParameter(2));
 678       gs->SetPointError(jphi, 0., 10.*fb.GetParError(2));
 679     }
 680
 681     // tracklet y resolution
 682     h2 = (TH2I*)fContainer->At(kTrackletYResolution);
 683     gm = new TGraphErrors(h2->GetNbinsX());
 684     gm->SetLineColor(kBlue);
 685     gm->SetMarkerStyle(7);
 686     gm->SetMarkerColor(kBlue);
 687     gm->SetNameTitle("trkltym", "");
 688     fGraphM->AddAt(gm, kTrackletYResolution);
 689     gs = new TGraphErrors(h2->GetNbinsX());
 690     gs->SetLineColor(kRed);
 691     gs->SetMarkerStyle(23);
 692     gs->SetMarkerColor(kRed);
 693     gs->SetNameTitle("trkltys", "");
 694     fGraphS->AddAt(gs, kTrackletYResolution);
 695     for(Int_t iphi=1; iphi<=h2->GetNbinsX(); iphi++){
 696       h = h2->ProjectionY("py", iphi, iphi);
 697       AdjustF1(h, &fb);
 698
 699       if(IsVisual()){c->cd(); c->SetLogy();}
 700       h->Fit(&fb, opt, "", -0.5, 0.5);
 701       if(IsVisual()){c->Modified(); c->Update(); gSystem->Sleep(500);}
 702
 703       Double_t phi = h2->GetXaxis()->GetBinCenter(iphi);
 704       Int_t jphi = iphi -1;
 705       gm->SetPoint(jphi, phi, 10.*fb.GetParameter(1));
 706       gm->SetPointError(jphi, 0., 10.*fb.GetParError(1));
 707       gs->SetPoint(jphi, phi, 10.*fb.GetParameter(2));
 708       gs->SetPointError(jphi, 0., 10.*fb.GetParError(2));
 709     }
 710
 711     // tracklet phi resolution
 712     h2 = (TH2I*)fContainer->At(kTrackletAngleResolution);
 713     gm = new TGraphErrors(h2->GetNbinsX());
 714     gm->SetLineColor(kBlue);
 715     gm->SetMarkerStyle(7);
 716     gm->SetMarkerColor(kBlue);
 717     gm->SetNameTitle("trkltym", "");
 718     fGraphM->AddAt(gm, kTrackletAngleResolution);
 719     gs = new TGraphErrors(h2->GetNbinsX());
 720     gs->SetLineColor(kRed);
 721     gs->SetMarkerStyle(23);
 722     gs->SetMarkerColor(kRed);
 723     gs->SetNameTitle("trkltys", "");
 724     fGraphS->AddAt(gs, kTrackletAngleResolution);
 725     for(Int_t iphi=1; iphi<=h2->GetNbinsX(); iphi++){
 726       h = h2->ProjectionY("py", iphi, iphi);
 727
 728       if(IsVisual()){c->cd(); c->SetLogy();}
 729       h->Fit(&f, opt, "", -0.5, 0.5);
 730       if(IsVisual()){c->Modified(); c->Update(); gSystem->Sleep(500);}
 731
 732       Double_t phi = h2->GetXaxis()->GetBinCenter(iphi);
 733       Int_t jphi = iphi -1;
 734       gm->SetPoint(jphi, phi, f.GetParameter(1));
 735       gm->SetPointError(jphi, 0., f.GetParError(1));
 736       gs->SetPoint(jphi, phi, f.GetParameter(2));
 737       gs->SetPointError(jphi, 0., f.GetParError(2));
 738     }
 739   }
 740   if(c) delete c;
 741
 742   return kTRUE;
 743 }
 744
 745
 746 //________________________________________________________
 747 void AliTRDtrackingResolution::Terminate(Option_t *)
 748 {
 749   if(fDebugStream){
 750     delete fDebugStream;
 751     fDebugStream = 0x0;
 752     fDebugLevel = 0;
 753   }
 754   if(HasPostProcess()) PostProcess();
 755 }
 756
 757 //________________________________________________________
 758 void AliTRDtrackingResolution::AdjustF1(TH1 *h, TF1 *f)
 759 {
 760 // Helper function to avoid duplication of code
 761 // Make first guesses on the fit parameters
 762
 763   // find the intial parameters of the fit !! (thanks George)
 764   Int_t nbinsy = Int_t(.5*h->GetNbinsX());
 765   Double_t sum = 0.;
 766   for(Int_t jbin=nbinsy-4; jbin<=nbinsy+4; jbin++) sum+=h->GetBinContent(jbin); sum/=9.;
 767   f->SetParLimits(0, 0., 3.*sum);
 768   f->SetParameter(0, .9*sum);
 769
 770   f->SetParLimits(1, -.2, .2);
 771   f->SetParameter(1, 0.);
 772
 773   f->SetParLimits(2, 0., 4.e-1);
 774   f->SetParameter(2, 2.e-2);
 775   if(f->GetNpar() <= 4) return;
 776
 777   f->SetParLimits(3, 0., sum);
 778   f->SetParameter(3, .1*sum);
 779
 780   f->SetParLimits(4, -.3, .3);
 781   f->SetParameter(4, 0.);
 782
 783   f->SetParLimits(5, 0., 1.e2);
 784   f->SetParameter(5, 2.e-1);
 785 }
 786
 787 //________________________________________________________
 788 TObjArray* AliTRDtrackingResolution::Histos()
 789 {
 790   if(fContainer) return fContainer;
 791
 792   fContainer  = new TObjArray(5);
 793
 794   // cluster to tracklet residuals [2]
 795   fContainer->AddAt(new TH2I("fYClRes", "Clusters Residuals", 21, -.33, .33, 100, -.5, .5), kClusterResidual);
 796 //   // tracklet to Riemann fit residuals [2]
 797 //   fContainer->AddAt(new TH2I("fYTrkltRRes", "Tracklet Riemann Residuals", 21, -21., 21., 100, -.5, .5), kTrackletRiemanYResidual);
 798 //   fContainer->AddAt(new TH2I("fAngleTrkltRRes", "Tracklet Riemann Angular Residuals", 21, -21., 21., 100, -.5, .5), kTrackletRiemanAngleResidual);
 799 //   fContainer->AddAt(new TH2I("fYTrkltKRes", "Tracklet Kalman Residuals", 21, -21., 21., 100, -.5, .5), kTrackletKalmanYResidual);
 800 //   fContainer->AddAt(new TH2I("fAngleTrkltKRes", "Tracklet Kalman Angular Residuals", 21, -21., 21., 100, -.5, .5), kTrackletKalmanAngleResidual);
 801
 802   // Resolution histos
 803   if(HasMCdata()){
 804     // cluster y resolution [0]
 805     fContainer->AddAt(new TH2I("fCY", "Cluster Resolution", 31, -.48, .48, 100, -.5, .5), kClusterResolution);
 806     // tracklet y resolution [0]
 807     fContainer->AddAt(new TH2I("fY", "Tracklet Resolution", 31, -.48, .48, 100, -.5, .5), kTrackletYResolution);
 808     // tracklet y resolution [0]
 809     fContainer->AddAt(new TH2I("fY", "Tracklet Resolution", 31, -.48, .48, 100, -.5, .5), kTrackletZResolution);
 810     // tracklet angular resolution [1]
 811     fContainer->AddAt(new TH2I("fPhi", "Tracklet Angular Resolution", 31, -.48, .48, 100, -10., 10.), kTrackletAngleResolution);
 812
 813 //     // Riemann track resolution [y, z, angular]
 814 //     fContainer->AddAt(new TH2I("fYRT", "Track Riemann Y Resolution", 21, -21., 21., 100, -.5, .5), kTrackRYResolution);
 815 //     fContainer->AddAt(new TH2I("fZRT", "Track Riemann Z Resolution", 21, -21., 21., 100, -.5, .5), kTrackRZResolution);
 816 //     fContainer->AddAt(new TH2I("fPhiRT", "Track Riemann Angular Resolution", 21, -21., 21., 100, -10., 10.), kTrackRAngleResolution);
 817 //
 818 //     Kalman track resolution [y, z, angular]
 819 //     fContainer->AddAt(new TH2I("fYKT", "", 21, -21., 21., 100, -.5, .5), kTrackKYResolution);
 820 //     fContainer->AddAt(new TH2I("fZKT", "", 21, -21., 21., 100, -.5, .5), kTrackKZResolution);
 821 //     fContainer->AddAt(new TH2I("fPhiKT", "", 21, -21., 21., 100, -10., 10.), kTrackKAngleResolution);
 822   }
 823   return fContainer;
 824 }
 825
 826
 827 //________________________________________________________
 828 void AliTRDtrackingResolution::SetRecoParam(AliTRDrecoParam *r)
 829 {
 830
 831   fReconstructor->SetRecoParam(r);
 832 }