| 820252d7 |
1 | //------------------------------------------------------------------------ |
| 2 | // Test macro for AliVertexerTracks. |
| 3 | // Contains several functions. |
| 4 | // |
| 5 | // A. Dainese - INFN Legnaro |
| 6 | //------------------------------------------------------------------------ |
| 7 | void AliVertexerTracksTest(Double_t nSigma=3., |
| 8 | Bool_t useMeanVtx=kTRUE, |
| 9 | TString outname="AliVertexerTracksTest.root") { |
| 10 | //------------------------------------------------------------------------ |
| 11 | // Run vertex reconstruction and store results in histos and ntuple |
| 12 | //------------------------------------------------------------------------ |
| 13 | |
| 14 | if (gAlice) { |
| 15 | delete gAlice->GetRunLoader(); |
| 16 | delete gAlice; |
| 17 | gAlice=0; |
| 18 | } |
| 19 | |
| 20 | AliRunLoader *rl = AliRunLoader::Open("galice.root"); |
| 21 | if (rl == 0x0) { |
| 22 | cerr<<"Can not open session"<<endl; |
| 23 | return; |
| 24 | } |
| 25 | Int_t retval = rl->LoadgAlice(); |
| 26 | if (retval) { |
| 27 | cerr<<"LoadgAlice returned error"<<endl; |
| 28 | delete rl; |
| 29 | return; |
| 30 | } |
| 31 | retval = rl->LoadHeader(); |
| 32 | if (retval) { |
| 33 | cerr<<"LoadHeader returned error"<<endl; |
| 34 | delete rl; |
| 35 | return; |
| 36 | } |
| 37 | gAlice=rl->GetAliRun(); |
| 38 | rl->LoadKinematics(); |
| 39 | // Get field from galice.root |
| 40 | AliMagF *fiel = (AliMagF*)gAlice->Field(); |
| 41 | // Set the conversion constant between curvature and Pt |
| 42 | AliTracker::SetFieldMap(fiel,kTRUE); |
| 43 | |
| 44 | //**** Switch on the PID class |
| 45 | AliPID pid; |
| 46 | |
| 47 | Int_t nEvents = (Int_t)rl->GetNumberOfEvents(); |
| 48 | |
| 49 | Double_t truevtx[3]; |
| 50 | Double_t vtx[3]; |
| 51 | Double_t errvtx[3]; |
| 52 | Double_t diffX,diffY,diffZ; |
| 53 | Double_t diffXerr,diffYerr,diffZerr; |
| 54 | Double_t multiplicity; |
| 55 | Int_t nc; |
| 56 | |
| 57 | // Histograms |
| 58 | TH1F *hdiffX = new TH1F("hdiffX","x_{found} - x_{true} [#mum]",1000,-5000,5000); |
| 59 | TH1F *hdiffY = new TH1F("hdiffY","y_{found} - y_{true} [#mum]",1000,-5000,5000); |
| 60 | TH1F *hdiffZ = new TH1F("hdiffZ","z_{found} - z_{true} [#mum]",1000,-5000,5000); |
| 61 | |
| 62 | TH1F *hdiffXerr = new TH1F("hdiffXerr","#Delta x/#sigma_{x}",100,-5,5); |
| 63 | TH1F *hdiffYerr = new TH1F("hdiffYerr","#Delta y/#sigma_{y}",100,-5,5); |
| 64 | TH1F *hdiffZerr = new TH1F("hdiffZerr","#Delta z/#sigma_{z}",100,-5,5); |
| 65 | |
| 66 | //TNtple |
| 67 | TNtuple *ntVtxRes = new TNtuple("ntVtxRes","Vertex Resolution's Ntupla with multiplicity","ntracks:nitstracks5or6:nitstracksFromStrange:nitstracksFromStrange5or6:diffX:diffY:diffZ:diffXerr:diffYerr:diffZerr:multiplicity:nc"); |
| 68 | |
| 69 | |
| 70 | |
| 71 | // ----------- Create vertexer -------------------------- |
| 72 | AliESDVertex *initVertex = 0; |
| 73 | if(useMeanVtx) { |
| 74 | // open the mean vertex |
| 75 | TFile *invtx = new TFile("AliESDVertexMean.root"); |
| 76 | initVertex = (AliESDVertex*)invtx->Get("vtxmean"); |
| 77 | invtx->Close(); |
| 78 | delete invtx; |
| 79 | } else { |
| 80 | Double_t pos[3]={0.5,0.5,0.}; |
| 81 | Double_t err[3]={3.,3.,5.}; |
| 82 | initVertex = new AliESDVertex(pos,err); |
| 83 | } |
| 84 | AliVertexerTracks *vertexer = new AliVertexerTracks(); |
| 85 | vertexer->SetITSrefitNotRequired(); |
| 86 | vertexer->SetVtxStart(initVertex); |
| 87 | vertexer->SetMinTracks(2); |
| 88 | vertexer->SetNSigmad0(nSigma); |
| 89 | //cout<<" Nsigma: "<<vertexer->GetNSigmad0()<<endl; |
| 90 | vertexer->SetDebug(1); // set to 1 to see what it does |
| 91 | //---------------------------------------------------------- |
| 92 | |
| 93 | if(gSystem->AccessPathName("AliESDs.root",kFileExists)) { |
| 94 | printf("AliESDs.root not found!\n"); |
| 95 | return; |
| 96 | } |
| 97 | TFile *fin = TFile::Open("AliESDs.root"); |
| 98 | TTree *esdTree = (TTree*)fin->Get("esdTree"); |
| 99 | if(!esdTree) return; |
| 100 | AliESD *esd = 0; |
| 101 | esdTree->SetBranchAddress("ESD",&esd); |
| 102 | Int_t events = esdTree->GetEntries(); |
| 103 | printf("Number of events in ESD tree: %d\n",events); |
| 104 | |
| 105 | TArrayF o; |
| 106 | |
| 107 | for(Int_t iev=0; iev<events; iev++) { //LOOP ON EVENTS |
| 108 | printf("-------------- EVENT %d --------------------\n",iev); |
| 109 | |
| 110 | diffX=99999; |
| 111 | diffY=99999; |
| 112 | diffZ=99999; |
| 113 | diffXerr=99999; |
| 114 | diffYerr=99999; |
| 115 | diffZerr=99999; |
| 116 | nc=0; |
| 117 | |
| 118 | //================================================= |
| 119 | // LOOK IN THE SIMULATION |
| 120 | // true vertex position |
| 121 | Int_t npart = (Int_t)gAlice->GetEvent(iev); |
| 122 | printf("particles %d\n",npart); |
| 123 | AliHeader *header = (AliHeader*)rl->GetHeader(); |
| 124 | AliGenPythiaEventHeader *pyheader = (AliGenPythiaEventHeader*)header->GenEventHeader(); |
| 125 | pyheader->PrimaryVertex(o); |
| 126 | truevtx[0] = o[0]; |
| 127 | truevtx[1] = o[1]; |
| 128 | truevtx[2] = o[2]; |
| 129 | printf("True Vertex: (%f, %f, %f)\n",o[0],o[1],o[2]); |
| 130 | |
| 131 | Double_t dNchdy = 0.; |
| 132 | multiplicity=0.; |
| 133 | Int_t nitstracks = 0; |
| 134 | Int_t nitstracksFromStrange = 0; |
| 135 | Int_t nitstracksFromStrange5or6 = 0; |
| 136 | Int_t nitstracks1 = 0; |
| 137 | Int_t nitstracks2 = 0; |
| 138 | Int_t nitstracks3 = 0; |
| 139 | Int_t nitstracks4 = 0; |
| 140 | Int_t nitstracks5 = 0; |
| 141 | Int_t nitstracks6 = 0; |
| 142 | Int_t nitstracks5or6 = 0; |
| 143 | |
| 144 | // loop on particles |
| 145 | for(Int_t pa=0; pa<npart; pa++) { |
| 146 | TParticle *part = (TParticle*)gAlice->GetMCApp()->Particle(pa); |
| 147 | Int_t pdg = part->GetPdgCode(); |
| 148 | Int_t apdg = TMath::Abs(pdg); |
| 149 | Double_t energy = part->Energy(); |
| 150 | if(energy>6900.) continue; // reject incoming protons |
| 151 | Double_t pz = part->Pz(); |
| 152 | Double_t y = 0.5*TMath::Log((energy+pz+1.e-13)/(energy-pz+1.e-13)); |
| 153 | |
| 154 | // consider charged pi,K,p,el,mu |
| 155 | if(apdg!=11 && apdg!=13 && apdg!=211 && apdg!=321 && apdg!=2212) continue; |
| 156 | // reject secondaries |
| 157 | if(TMath::Sqrt((part->Vx()-o[0])*(part->Vx()-o[0])+(part->Vy()-o[1])*(part->Vy()-o[1]))>0.0010) continue; |
| 158 | if(TMath::Abs(y)<1.0) dNchdy += 0.5; // count 1/2 of particles in |y|<1 |
| 159 | } // end loop on particles |
| 160 | multiplicity=(Double_t)dNchdy; |
| 161 | |
| 162 | printf(" dNch/dy = %f\n",dNchdy); |
| 163 | //=============================================================== |
| 164 | |
| 165 | |
| 166 | esdTree->GetEvent(iev); |
| 167 | Int_t ntracks = esd->GetNumberOfTracks(); |
| 168 | printf("Number of tracks in ESD %d : %d\n",iev,ntracks); |
| 169 | if(ntracks==0) { |
| 170 | ntVtxRes->Fill(ntracks,nitstracks5or6,nitstracksFromStrange,nitstracksFromStrange5or6,diffX,diffY,diffZ,diffXerr,diffYerr,diffZerr,multiplicity,nc); |
| 171 | continue; |
| 172 | } |
| 173 | |
| 174 | // VERTEX |
| 175 | AliESDVertex *vertex = (AliESDVertex*)vertexer->FindPrimaryVertex(esd); |
| 176 | //AliESDVertex *vertex = (AliESDVertex*)vertexer->FindPrimaryVertexOld(esd); |
| 177 | |
| 178 | nc = (Int_t)vertex->GetNContributors(); |
| 179 | printf("nc = %d\n",nc); |
| 180 | |
| 181 | |
| 182 | // count ITS tracks |
| 183 | for(Int_t itrk=0; itrk<ntracks; itrk++) { |
| 184 | AliESDtrack *esdtrack = (AliESDtrack*)esd->GetTrack(itrk); |
| 185 | UInt_t status = esdtrack->GetStatus(); |
| 186 | // only tracks found also in ITS |
| 187 | if(! (status&AliESDtrack::kITSin) ) continue; |
| 188 | nitstracks++; |
| 189 | Int_t npts = (Int_t)esdtrack->GetNcls(0); |
| 190 | if(npts==6) {nitstracks6++;nitstracks5or6++;} |
| 191 | if(npts==5) {nitstracks5++;nitstracks5or6++;} |
| 192 | if(npts==4) nitstracks4++; |
| 193 | if(npts==3) nitstracks3++; |
| 194 | if(npts==2) nitstracks2++; |
| 195 | if(npts==1) nitstracks1++; |
| 196 | TParticle *part = (TParticle*)gAlice->GetMCApp()->Particle(TMath::Abs(esdtrack->GetLabel())); |
| 197 | if(part->GetFirstMother()>=0) { |
| 198 | Int_t mpdg = TMath::Abs(gAlice->GetMCApp()->Particle(part->GetFirstMother())->GetPdgCode()); |
| 199 | //cout<<TMath::Abs(esdtrack->GetLabel())<<" "<<mpdg<<endl; |
| 200 | if(mpdg==321||mpdg==311||mpdg==310||mpdg==3122||mpdg==3312||mpdg==3334) { |
| 201 | nitstracksFromStrange++; |
| 202 | if(npts>=5) nitstracksFromStrange5or6++; |
| 203 | } |
| 204 | } |
| 205 | } |
| 206 | printf("Number of kITSin tracks in ESD %d : %d\n",iev,nitstracks); |
| 207 | printf(" 6 pts: %d\n",nitstracks6); |
| 208 | printf(" 5 pts: %d\n",nitstracks5); |
| 209 | printf(" 4 pts: %d\n",nitstracks4); |
| 210 | printf(" 3 pts: %d\n",nitstracks3); |
| 211 | printf(" 2 pts: %d\n",nitstracks2); |
| 212 | printf(" 1 pts: %d\n",nitstracks1); |
| 213 | printf("Number of kITSin tracks from s: %d\n",nitstracksFromStrange); |
| 214 | |
| 215 | |
| 216 | if(nc>=2) { |
| 217 | vertex->GetXYZ(vtx); |
| 218 | vertex->GetSigmaXYZ(errvtx); |
| 219 | diffX = 10000.* (vtx[0] - truevtx[0]); |
| 220 | diffY = 10000.* (vtx[1] - truevtx[1]); |
| 221 | diffZ = 10000.* (vtx[2] - truevtx[2]); |
| 222 | hdiffX->Fill(diffX); |
| 223 | hdiffY->Fill(diffY); |
| 224 | hdiffZ->Fill(diffZ); |
| 225 | diffXerr = diffX/errvtx[0]/10000.; |
| 226 | diffYerr = diffY/errvtx[1]/10000.; |
| 227 | diffZerr = diffZ/errvtx[2]/10000.; |
| 228 | hdiffXerr->Fill(diffXerr); |
| 229 | hdiffYerr->Fill(diffYerr); |
| 230 | hdiffZerr->Fill(diffZerr); |
| 231 | } |
| 232 | |
| 233 | ntVtxRes->Fill(nitstracks,nitstracks5or6,nitstracksFromStrange,nitstracksFromStrange5or6,diffX,diffY,diffZ,diffXerr,diffYerr,diffZerr,multiplicity,(Float_t)nc); |
| 234 | |
| 235 | } // END LOOP ON EVENTS |
| 236 | |
| 237 | |
| 238 | delete esdTree; |
| 239 | delete fin; |
| 240 | delete vertexer; |
| 241 | delete initVertex; |
| 242 | |
| 243 | // Output file |
| 244 | TFile *fout = new TFile(outname.Data(),"recreate"); |
| 245 | ntVtxRes->Write(); |
| 246 | hdiffX->Write(); |
| 247 | hdiffY->Write(); |
| 248 | hdiffZ->Write(); |
| 249 | hdiffXerr->Write(); |
| 250 | hdiffYerr->Write(); |
| 251 | hdiffZerr->Write(); |
| 252 | fout->Close(); |
| 253 | |
| 254 | return; |
| 255 | } |
| 256 | //---------------------------------------------------------------------------- |
| 257 | Double_t FitFunc(Double_t *x,Double_t *par) { |
| 258 | return par[0]+par[1]/TMath::Sqrt(x[0]); |
| 259 | } |
| 260 | Int_t GetBin(Float_t mult) { |
| 261 | if(mult<5.) return 0; |
| 262 | if(mult<7.) return 1; |
| 263 | if(mult<12.) return 2; |
| 264 | if(mult<15.) return 3; |
| 265 | if(mult<22.) return 4; |
| 266 | return 5; |
| 267 | } |
| 268 | void PlotVtxRes(const Char_t *inname="AliVertexerTracksTest.root") { |
| 269 | //--------------------------------------------------------------------- |
| 270 | // Plot efficiency, resolutions, pulls |
| 271 | // [at least 10k pp events are needed] |
| 272 | //--------------------------------------------------------------------- |
| 273 | |
| 274 | gStyle->SetOptStat(0); |
| 275 | gStyle->SetOptFit(10001); |
| 276 | |
| 277 | Int_t nEvVtx=0; |
| 278 | Int_t nEvNoVtx=0; |
| 279 | Int_t ev,nUsedTrks; |
| 280 | Float_t nTrks,nTrksFromStrange,nTrks5or6,nTrksFromStrange5or6,dNchdy; |
| 281 | Float_t diffX,diffY,diffZ,diffXerr,diffYerr,diffZerr; |
| 282 | |
| 283 | // |
| 284 | // HISTOGRAMS |
| 285 | // |
| 286 | TH1F *hdx = new TH1F("hdx","",50,-600,600); |
| 287 | hdx->SetXTitle("#Delta x [#mu m]"); |
| 288 | hdx->SetYTitle("events"); |
| 289 | // |
| 290 | TH1F *hdy = new TH1F("hdy","",50,-600,600); |
| 291 | hdy->SetXTitle("#Delta y [#mu m]"); |
| 292 | hdy->SetYTitle("events"); |
| 293 | // |
| 294 | TH1F *hdz = new TH1F("hdz","",50,-600,600); |
| 295 | hdz->SetXTitle("#Delta z [#mu m]"); |
| 296 | hdz->SetYTitle("events"); |
| 297 | // |
| 298 | TH1F *hTracksVtx = new TH1F("hTracksVtx","events w/ vertex",51,-0.5,50.5); |
| 299 | hTracksVtx->SetXTitle("Number of reco tracks in TPC&ITS"); |
| 300 | hTracksVtx->SetYTitle("events"); |
| 301 | // |
| 302 | TH1F *hTracksNoVtx = new TH1F("hTracksNoVtx","events w/o vertex",51,-0.5,50.5); |
| 303 | hTracksNoVtx->SetXTitle("Number of reco tracks in TPC&ITS"); |
| 304 | hTracksNoVtx->SetYTitle("events"); |
| 305 | // |
| 306 | TH1F *hTracksVtx5or6 = new TH1F("hTracksVtx5or6","events w/ vertex",51,-0.5,50.5); |
| 307 | hTracksVtx5or6->SetXTitle("Number of reco tracks in TPC&ITS(pts>=5)"); |
| 308 | hTracksVtx5or6->SetYTitle("events"); |
| 309 | // |
| 310 | TH1F *hTracksNoVtx5or6 = new TH1F("hTracksNoVtx5or6","events w/o vertex",51,-0.5,50.5); |
| 311 | hTracksNoVtx5or6->SetXTitle("Number of reco tracks in TPC&ITS(pts>=5)"); |
| 312 | hTracksNoVtx5or6->SetYTitle("events"); |
| 313 | // |
| 314 | TH1F *hTracksVtx5or6nonS = new TH1F("hTracksVtx5or6nonS","events w/ vertex",51,-0.5,50.5); |
| 315 | hTracksVtx5or6nonS->SetXTitle("Number of reco tracks in TPC&ITS(pts>=5) NOT from s"); |
| 316 | hTracksVtx5or6nonS->SetYTitle("events"); |
| 317 | // |
| 318 | TH1F *hTracksNoVtx5or6nonS = new TH1F("hTracksNoVtx5or6nonS","events w/o vertex",51,-0.5,50.5); |
| 319 | hTracksNoVtx5or6nonS->SetXTitle("Number of reco tracks in TPC&ITS(pts>=5) NOT from s"); |
| 320 | hTracksNoVtx5or6nonS->SetYTitle("events"); |
| 321 | // |
| 322 | TH1F *hPullsx = new TH1F("hPullsx","",50,-7.,7.); |
| 323 | hPullsx->SetXTitle("#Delta x/#sqrt{<x,x>}"); |
| 324 | hPullsx->SetYTitle("events"); |
| 325 | // |
| 326 | TH1F *hPullsy = new TH1F("hPullsy","",50,-7.,7.); |
| 327 | hPullsy->SetXTitle("#Delta y/#sqrt{<y,y>}"); |
| 328 | hPullsy->SetYTitle("events"); |
| 329 | // |
| 330 | TH1F *hPullsz = new TH1F("hPullsz","",50,-7.,7.); |
| 331 | hPullsz->SetXTitle("#Delta z/#sqrt{<z,z>}"); |
| 332 | hPullsz->SetYTitle("events"); |
| 333 | // |
| 334 | |
| 335 | Double_t mult[6]={0,0,0,0,0,0}; |
| 336 | Double_t mult2[6]={0,0,0,0,0,0}; |
| 337 | Double_t sigmamult[6]={0,0,0,0,0,0}; |
| 338 | Double_t sigmamult2[6]={0,0,0,0,0,0}; |
| 339 | Double_t tottracks[6]={0,0,0,0,0,0}; |
| 340 | Double_t fittrks[6]={0,0,0,0,0,0}; |
| 341 | Double_t tracks[6]={0,0,0,0,0,0}; |
| 342 | Double_t etracks[6]={0,0,0,0,0,0}; |
| 343 | Double_t xres[6]={0,0,0,0,0,0}; |
| 344 | Double_t exres[6]={0,0,0,0,0,0}; |
| 345 | Double_t yres[6]={0,0,0,0,0,0}; |
| 346 | Double_t eyres[6]={0,0,0,0,0,0}; |
| 347 | Double_t zres[6]={0,0,0,0,0,0}; |
| 348 | Double_t ezres[6]={0,0,0,0,0,0}; |
| 349 | Double_t xpull[6]={0,0,0,0,0,0}; |
| 350 | Double_t expull[6]={0,0,0,0,0,0}; |
| 351 | Double_t ypull[6]={0,0,0,0,0,0}; |
| 352 | Double_t eypull[6]={0,0,0,0,0,0}; |
| 353 | Double_t zpull[6]={0,0,0,0,0,0}; |
| 354 | Double_t ezpull[6]={0,0,0,0,0,0}; |
| 355 | Int_t evts[6]={0,0,0,0,0,0}; |
| 356 | Int_t totevts[6]={0,0,0,0,0,0}; |
| 357 | Int_t vtx[6]={0,0,0,0,0,0}; |
| 358 | Int_t all[6]={0,0,0,0,0,0}; |
| 359 | Double_t probVtx[6]={0,0,0,0,0,0}; |
| 360 | Double_t eprobVtx[6]={0,0,0,0,0,0}; |
| 361 | Int_t bin; |
| 362 | // |
| 363 | // OTHER HISTOGRAMS |
| 364 | // |
| 365 | TH1F *hdx0 = new TH1F("hdx0","x resolution - bin 0",50,-500,500); |
| 366 | TH1F *hdx1 = new TH1F("hdx1","x resolution - bin 1",50,-500,500); |
| 367 | TH1F *hdx2 = new TH1F("hdx2","x resolution - bin 2",50,-500,500); |
| 368 | TH1F *hdx3 = new TH1F("hdx3","x resolution - bin 3",50,-400,400); |
| 369 | TH1F *hdx4 = new TH1F("hdx4","x resolution - bin 4",50,-300,300); |
| 370 | TH1F *hdx5 = new TH1F("hdx5","x resolution - bin 5",50,-300,300); |
| 371 | TH1F *hdy0 = new TH1F("hdy0","y resolution - bin 0",50,-500,500); |
| 372 | TH1F *hdy1 = new TH1F("hdy1","y resolution - bin 1",50,-500,500); |
| 373 | TH1F *hdy2 = new TH1F("hdy2","y resolution - bin 2",50,-500,500); |
| 374 | TH1F *hdy3 = new TH1F("hdy3","y resolution - bin 3",50,-400,400); |
| 375 | TH1F *hdy4 = new TH1F("hdy4","y resolution - bin 4",50,-300,300); |
| 376 | TH1F *hdy5 = new TH1F("hdy5","y resolution - bin 5",50,-300,300); |
| 377 | TH1F *hdz0 = new TH1F("hdz0","z resolution - bin 0",50,-1000,1000); |
| 378 | TH1F *hdz1 = new TH1F("hdz1","z resolution - bin 1",50,-800,800); |
| 379 | TH1F *hdz2 = new TH1F("hdz2","z resolution - bin 2",50,-800,800); |
| 380 | TH1F *hdz3 = new TH1F("hdz3","z resolution - bin 3",50,-600,600); |
| 381 | TH1F *hdz4 = new TH1F("hdz4","z resolution - bin 4",50,-500,500); |
| 382 | TH1F *hdz5 = new TH1F("hdz5","z resolution - bin 5",50,-500,500); |
| 383 | |
| 384 | TH1F *hpx0 = new TH1F("hpx0","x pull - bin 0",50,-7,7); |
| 385 | TH1F *hpx1 = new TH1F("hpx1","x pull - bin 1",50,-7,7); |
| 386 | TH1F *hpx2 = new TH1F("hpx2","x pull - bin 2",50,-7,7); |
| 387 | TH1F *hpx3 = new TH1F("hpx3","x pull - bin 3",50,-7,7); |
| 388 | TH1F *hpx4 = new TH1F("hpx4","x pull - bin 4",50,-7,7); |
| 389 | TH1F *hpx5 = new TH1F("hpx5","x pull - bin 5",50,-7,7); |
| 390 | TH1F *hpy0 = new TH1F("hpy0","y pull - bin 0",50,-7,7); |
| 391 | TH1F *hpy1 = new TH1F("hpy1","y pull - bin 1",50,-7,7); |
| 392 | TH1F *hpy2 = new TH1F("hpy2","y pull - bin 2",50,-7,7); |
| 393 | TH1F *hpy3 = new TH1F("hpy3","y pull - bin 3",50,-7,7); |
| 394 | TH1F *hpy4 = new TH1F("hpy4","y pull - bin 4",50,-7,7); |
| 395 | TH1F *hpy5 = new TH1F("hpy5","y pull - bin 5",50,-7,7); |
| 396 | TH1F *hpz0 = new TH1F("hpz0","z pull - bin 0",50,-7,7); |
| 397 | TH1F *hpz1 = new TH1F("hpz1","z pull - bin 1",50,-7,7); |
| 398 | TH1F *hpz2 = new TH1F("hpz2","z pull - bin 2",50,-7,7); |
| 399 | TH1F *hpz3 = new TH1F("hpz3","z pull - bin 3",50,-7,7); |
| 400 | TH1F *hpz4 = new TH1F("hpz4","z pull - bin 4",50,-7,7); |
| 401 | TH1F *hpz5 = new TH1F("hpz5","z pull - bin 5",50,-7,7); |
| 402 | |
| 403 | |
| 404 | TH1F *hmult = new TH1F("hmult","hmult",50,-0.5,49.5); |
| 405 | |
| 406 | TFile *in = new TFile(inname); |
| 407 | TNtuple *nt = (TNtuple*)in->Get("ntVtxRes"); |
| 408 | nt->SetBranchAddress("ntracks",&nTrks); |
| 409 | nt->SetBranchAddress("nitstracks5or6",&nTrks5or6); |
| 410 | nt->SetBranchAddress("nitstracksFromStrange",&nTrksFromStrange); |
| 411 | nt->SetBranchAddress("nitstracksFromStrange5or6",&nTrksFromStrange5or6); |
| 412 | nt->SetBranchAddress("diffX",&diffX); |
| 413 | nt->SetBranchAddress("diffY",&diffY); |
| 414 | nt->SetBranchAddress("diffZ",&diffZ); |
| 415 | nt->SetBranchAddress("diffXerr",&diffXerr); |
| 416 | nt->SetBranchAddress("diffYerr",&diffYerr); |
| 417 | nt->SetBranchAddress("diffZerr",&diffZerr); |
| 418 | nt->SetBranchAddress("multiplicity",&dNchdy); |
| 419 | Int_t entries = (Int_t)nt->GetEntries(); |
| 420 | Int_t nbytes=0; |
| 421 | |
| 422 | for(Int_t i=0; i<entries; i++) { |
| 423 | nbytes += nt->GetEvent(i); |
| 424 | bin = GetBin(dNchdy); |
| 425 | mult[bin] += dNchdy; |
| 426 | hmult->Fill(dNchdy); |
| 427 | totevts[bin]++; |
| 428 | if(diffX < 90000.) { // vtx found |
| 429 | nEvVtx++; |
| 430 | mult2[bin] += dNchdy; |
| 431 | vtx[bin]++; |
| 432 | tottracks[bin] += nTrks; |
| 433 | evts[bin]++; |
| 434 | if(bin==0) hdx0->Fill(diffX); |
| 435 | if(bin==1) hdx1->Fill(diffX); |
| 436 | if(bin==2) hdx2->Fill(diffX); |
| 437 | if(bin==3) hdx3->Fill(diffX); |
| 438 | if(bin==4) hdx4->Fill(diffX); |
| 439 | if(bin==5) hdx5->Fill(diffX); |
| 440 | if(bin==0) hdy0->Fill(diffY); |
| 441 | if(bin==1) hdy1->Fill(diffY); |
| 442 | if(bin==2) hdy2->Fill(diffY); |
| 443 | if(bin==3) hdy3->Fill(diffY); |
| 444 | if(bin==4) hdy4->Fill(diffY); |
| 445 | if(bin==5) hdy5->Fill(diffY); |
| 446 | if(bin==0) hdz0->Fill(diffZ); |
| 447 | if(bin==1) hdz1->Fill(diffZ); |
| 448 | if(bin==2) hdz2->Fill(diffZ); |
| 449 | if(bin==3) hdz3->Fill(diffZ); |
| 450 | if(bin==4) hdz4->Fill(diffZ); |
| 451 | if(bin==5) hdz5->Fill(diffZ); |
| 452 | hdx->Fill(diffX); |
| 453 | hdy->Fill(diffY); |
| 454 | hdz->Fill(diffZ); |
| 455 | hTracksVtx->Fill(nTrks); |
| 456 | hTracksVtx5or6->Fill(nTrks5or6); |
| 457 | hTracksVtx5or6nonS->Fill(nTrks5or6-nTrksFromStrange5or6); |
| 458 | hPullsx->Fill(diffXerr); |
| 459 | hPullsy->Fill(diffYerr); |
| 460 | hPullsz->Fill(diffZerr); |
| 461 | if(bin==0) hpx0->Fill(diffXerr); |
| 462 | if(bin==1) hpx1->Fill(diffXerr); |
| 463 | if(bin==2) hpx2->Fill(diffXerr); |
| 464 | if(bin==3) hpx3->Fill(diffXerr); |
| 465 | if(bin==4) hpx4->Fill(diffXerr); |
| 466 | if(bin==5) hpx5->Fill(diffXerr); |
| 467 | if(bin==0) hpy0->Fill(diffYerr); |
| 468 | if(bin==1) hpy1->Fill(diffYerr); |
| 469 | if(bin==2) hpy2->Fill(diffYerr); |
| 470 | if(bin==3) hpy3->Fill(diffYerr); |
| 471 | if(bin==4) hpy4->Fill(diffYerr); |
| 472 | if(bin==5) hpy5->Fill(diffYerr); |
| 473 | if(bin==0) hpz0->Fill(diffZerr); |
| 474 | if(bin==1) hpz1->Fill(diffZerr); |
| 475 | if(bin==2) hpz2->Fill(diffZerr); |
| 476 | if(bin==3) hpz3->Fill(diffZerr); |
| 477 | if(bin==4) hpz4->Fill(diffZerr); |
| 478 | if(bin==5) hpz5->Fill(diffZerr); |
| 479 | } else { |
| 480 | nEvNoVtx++; |
| 481 | hTracksNoVtx->Fill(nTrks); |
| 482 | hTracksNoVtx5or6->Fill(nTrks5or6); |
| 483 | hTracksNoVtx5or6nonS->Fill(nTrks5or6-nTrksFromStrange5or6); |
| 484 | } |
| 485 | all[bin]++; |
| 486 | } |
| 487 | |
| 488 | |
| 489 | for(Int_t k=0;k<6;k++) { |
| 490 | mult2[k] /= evts[k]; |
| 491 | mult[k] /= totevts[k]; |
| 492 | tottracks[k] /= evts[k]; |
| 493 | probVtx[k] = (Double_t)vtx[k]/all[k]; |
| 494 | eprobVtx[k] = (Double_t)vtx[k]/all[k]/all[k]+(Double_t)vtx[k]*vtx[k]/all[k]/all[k]/all[k]; |
| 495 | eprobVtx[k] = TMath::Sqrt(eprobVtx[k]); |
| 496 | } |
| 497 | |
| 498 | // calculate spread in multiplicity |
| 499 | for(Int_t i=0; i<entries; i++) { |
| 500 | nbytes += nt->GetEvent(i); |
| 501 | bin = GetBin(dNchdy); |
| 502 | sigmamult[bin] += (dNchdy-mult[bin])*(dNchdy-mult[bin])/totevts[bin]; |
| 503 | if(diffX < 90000.) sigmamult2[bin] += (dNchdy-mult2[bin])*(dNchdy-mult2[bin])/evts[bin]; |
| 504 | } |
| 505 | |
| 506 | for(Int_t k=0;k<6;k++) { |
| 507 | sigmamult[k] = TMath::Sqrt(sigmamult[k]); |
| 508 | sigmamult2[k] = TMath::Sqrt(sigmamult2[k]); |
| 509 | } |
| 510 | |
| 511 | // fraction of found vertices |
| 512 | Float_t frac = (Float_t)nEvVtx/(nEvVtx+nEvNoVtx); |
| 513 | printf(" Fraction of events with vertex: %f\n",frac); |
| 514 | |
| 515 | |
| 516 | // FIT FUNCTIONS |
| 517 | TF1 *g = new TF1("g","gaus"); |
| 518 | g->SetLineWidth(3); |
| 519 | TF1 *line = new TF1("line","pol1"); |
| 520 | line->SetLineWidth(3); |
| 521 | TF1 *func = new TF1("func",FitFunc,2,35,2); |
| 522 | func->SetLineWidth(1); |
| 523 | |
| 524 | Double_t x1,y1,sigmafit; |
| 525 | Char_t message[100]; |
| 526 | |
| 527 | // |
| 528 | // DRAW PLOTS |
| 529 | // |
| 530 | gStyle->SetOptFit(1111); |
| 531 | |
| 532 | // Tracks in ITS for events w/ and w/o vertex |
| 533 | TCanvas *c1 = new TCanvas("c1","c1",0,0,1000,500); |
| 534 | c1->Divide(2,1); |
| 535 | c1->cd(1); |
| 536 | hTracksVtx->Draw(); |
| 537 | c1->cd(2); |
| 538 | hTracksNoVtx->Draw(); |
| 539 | |
| 540 | // probability vs ntracks |
| 541 | TCanvas *c1b = new TCanvas("c1b","c1b",0,0,500,500); |
| 542 | TH1F *hTotTracks = (TH1F*)hTracksVtx->Clone("hTotTracks"); |
| 543 | hTotTracks->Add(hTracksNoVtx); |
| 544 | TH1F *hProbTracks = (TH1F*)hTracksVtx->Clone("hProbTracks"); |
| 545 | hProbTracks->Divide(hTotTracks); |
| 546 | hProbTracks->SetYTitle("Probability"); |
| 547 | hProbTracks->SetTitle("Probability to find the vertex"); |
| 548 | hProbTracks->Draw(); |
| 549 | |
| 550 | TCanvas *c1c = new TCanvas("c1c","c1c",0,0,500,500); |
| 551 | TH1F *hTotTracks5or6 = (TH1F*)hTracksVtx5or6->Clone("hTotTracks5or6"); |
| 552 | hTotTracks5or6->Add(hTracksNoVtx5or6); |
| 553 | TH1F *hProbTracks5or6 = (TH1F*)hTracksVtx5or6->Clone("hProbTracks5or6"); |
| 554 | hProbTracks5or6->Divide(hTotTracks5or6); |
| 555 | hProbTracks5or6->SetYTitle("Probability"); |
| 556 | hProbTracks5or6->SetTitle("Probability to find the vertex"); |
| 557 | hProbTracks5or6->Draw(); |
| 558 | |
| 559 | TCanvas *c1d = new TCanvas("c1d","c1d",0,0,500,500); |
| 560 | TH1F *hTotTracks5or6nonS = (TH1F*)hTracksVtx5or6nonS->Clone("hTotTracks5or6nonS"); |
| 561 | hTotTracks5or6nonS->Add(hTracksNoVtx5or6nonS); |
| 562 | TH1F *hProbTracks5or6nonS = (TH1F*)hTracksVtx5or6nonS->Clone("hProbTracks5or6nonS"); |
| 563 | hProbTracks5or6nonS->Divide(hTotTracks5or6nonS); |
| 564 | hProbTracks5or6nonS->SetYTitle("Probability"); |
| 565 | hProbTracks5or6nonS->SetTitle("Probability to find the vertex"); |
| 566 | hProbTracks5or6nonS->Draw(); |
| 567 | |
| 568 | // Global resolutions |
| 569 | TCanvas *c2 = new TCanvas("c2","c2",0,0,1000,400); |
| 570 | c2->Divide(3,1); |
| 571 | c2->cd(1); |
| 572 | hdx->Draw(); |
| 573 | g->SetRange(-1.*hdx->GetRMS(),+1.*hdx->GetRMS()); |
| 574 | hdx->Fit("g","R"); |
| 575 | c2->cd(2); |
| 576 | hdy->Draw(); |
| 577 | g->SetRange(-1.*hdy->GetRMS(),+1.*hdy->GetRMS()); |
| 578 | hdy->Fit("g","R"); |
| 579 | c2->cd(3); |
| 580 | hdz->Draw(); |
| 581 | g->SetRange(-1.*hdz->GetRMS(),+1.*hdz->GetRMS()); |
| 582 | hdz->Fit("g","R"); |
| 583 | |
| 584 | // Pulls |
| 585 | TCanvas *c4 = new TCanvas("c4","c4",0,0,1000,400); |
| 586 | c4->Divide(3,1); |
| 587 | c4->cd(1); |
| 588 | hPullsx->Draw(); |
| 589 | g->SetRange(-3.*hPullsx->GetRMS(),+3.*hPullsx->GetRMS()); |
| 590 | hPullsx->Fit("g","R"); |
| 591 | c4->cd(2); |
| 592 | hPullsy->Draw(); |
| 593 | g->SetRange(-3.*hPullsy->GetRMS(),+3.*hPullsy->GetRMS()); |
| 594 | hPullsy->Fit("g","R"); |
| 595 | c4->cd(3); |
| 596 | hPullsz->Draw(); |
| 597 | g->SetRange(-3.*hPullsz->GetRMS(),+3.*hPullsz->GetRMS()); |
| 598 | hPullsz->Fit("g","R"); |
| 599 | |
| 600 | // probability VS multiplicity |
| 601 | TCanvas *c5 = new TCanvas("c5","c5",0,0,600,500); |
| 602 | TH2F *fr5 = new TH2F("fr5","",2,0,35,2,0,1.1); |
| 603 | fr5->SetXTitle("dN_{ch}/dy"); |
| 604 | fr5->SetYTitle("Probability"); |
| 605 | fr5->Draw(); |
| 606 | TGraphErrors *gr5 = new TGraphErrors(6,mult,probVtx,sigmamult,eprobVtx); |
| 607 | gr5->Draw("p"); |
| 608 | gr5->SetMarkerStyle(21); |
| 609 | |
| 610 | // |
| 611 | // resolutions VS multiplicity |
| 612 | // |
| 613 | // X |
| 614 | TCanvas *ax = new TCanvas("ax","ax",0,0,900,700); |
| 615 | ax->Divide(3,2); |
| 616 | ax->cd(1); |
| 617 | hdx0->Draw(); |
| 618 | g->SetRange(-3.*hdx0->GetRMS(),+3.*hdx0->GetRMS()); |
| 619 | hdx0->Fit("g","Q"); |
| 620 | xres[0]=g->GetParameter(2); |
| 621 | exres[0]=g->GetParError(2); |
| 622 | ax->cd(2); |
| 623 | hdx1->Draw(); |
| 624 | g->SetRange(-3.*hdx1->GetRMS(),+3.*hdx1->GetRMS()); |
| 625 | hdx1->Fit("g","Q"); |
| 626 | xres[1]=g->GetParameter(2); |
| 627 | exres[1]=g->GetParError(2); |
| 628 | ax->cd(3); |
| 629 | hdx2->Draw(); |
| 630 | g->SetRange(-3.*hdx2->GetRMS(),+3.*hdx2->GetRMS()); |
| 631 | hdx2->Fit("g","Q"); |
| 632 | xres[2]=g->GetParameter(2); |
| 633 | exres[2]=g->GetParError(2); |
| 634 | ax->cd(4); |
| 635 | hdx3->Draw(); |
| 636 | g->SetRange(-3.*hdx3->GetRMS(),+3.*hdx3->GetRMS()); |
| 637 | hdx3->Fit("g","Q"); |
| 638 | xres[3]=g->GetParameter(2); |
| 639 | exres[3]=g->GetParError(2); |
| 640 | ax->cd(5); |
| 641 | hdx4->Draw(); |
| 642 | g->SetRange(-3.*hdx4->GetRMS(),+3.*hdx4->GetRMS()); |
| 643 | hdx4->Fit("g","Q"); |
| 644 | xres[4]=g->GetParameter(2); |
| 645 | exres[4]=g->GetParError(2); |
| 646 | ax->cd(6); |
| 647 | hdx5->Draw(); |
| 648 | g->SetRange(-3.*hdx5->GetRMS(),+3.*hdx5->GetRMS()); |
| 649 | hdx5->Fit("g","Q"); |
| 650 | xres[5]=g->GetParameter(2); |
| 651 | exres[5]=g->GetParError(2); |
| 652 | // Y |
| 653 | TCanvas *ay = new TCanvas("ay","ay",0,0,900,700); |
| 654 | ay->Divide(3,2); |
| 655 | ay->cd(1); |
| 656 | hdy0->Draw(); |
| 657 | g->SetRange(-3.*hdy0->GetRMS(),+3.*hdy0->GetRMS()); |
| 658 | hdy0->Fit("g","Q"); |
| 659 | yres[0]=g->GetParameter(2); |
| 660 | eyres[0]=g->GetParError(2); |
| 661 | ay->cd(2); |
| 662 | hdy1->Draw(); |
| 663 | g->SetRange(-3.*hdy1->GetRMS(),+3.*hdy1->GetRMS()); |
| 664 | hdy1->Fit("g","Q"); |
| 665 | yres[1]=g->GetParameter(2); |
| 666 | eyres[1]=g->GetParError(2); |
| 667 | ay->cd(3); |
| 668 | hdy2->Draw(); |
| 669 | g->SetRange(-3.*hdy2->GetRMS(),+3.*hdy2->GetRMS()); |
| 670 | hdy2->Fit("g","Q"); |
| 671 | yres[2]=g->GetParameter(2); |
| 672 | eyres[2]=g->GetParError(2); |
| 673 | ay->cd(4); |
| 674 | hdy3->Draw(); |
| 675 | g->SetRange(-3.*hdy3->GetRMS(),+3.*hdy3->GetRMS()); |
| 676 | hdy3->Fit("g","Q"); |
| 677 | yres[3]=g->GetParameter(2); |
| 678 | eyres[3]=g->GetParError(2); |
| 679 | ay->cd(5); |
| 680 | hdy4->Draw(); |
| 681 | g->SetRange(-3.*hdy4->GetRMS(),+3.*hdy4->GetRMS()); |
| 682 | hdy4->Fit("g","Q"); |
| 683 | yres[4]=g->GetParameter(2); |
| 684 | eyres[4]=g->GetParError(2); |
| 685 | ay->cd(6); |
| 686 | hdy5->Draw(); |
| 687 | g->SetRange(-3.*hdy5->GetRMS(),+3.*hdy5->GetRMS()); |
| 688 | hdy5->Fit("g","Q"); |
| 689 | yres[5]=g->GetParameter(2); |
| 690 | eyres[5]=g->GetParError(2); |
| 691 | // Z |
| 692 | TCanvas *az = new TCanvas("az","az",0,0,900,700); |
| 693 | az->Divide(3,2); |
| 694 | az->cd(1); |
| 695 | hdz0->Draw(); |
| 696 | g->SetRange(-3.*hdz0->GetRMS(),+3.*hdz0->GetRMS()); |
| 697 | hdz0->Fit("g","Q"); |
| 698 | zres[0]=g->GetParameter(2); |
| 699 | ezres[0]=g->GetParError(2); |
| 700 | az->cd(2); |
| 701 | hdz1->Draw(); |
| 702 | g->SetRange(-3.*hdz1->GetRMS(),+3.*hdz1->GetRMS()); |
| 703 | hdz1->Fit("g","Q"); |
| 704 | zres[1]=g->GetParameter(2); |
| 705 | ezres[1]=g->GetParError(2); |
| 706 | az->cd(3); |
| 707 | hdz2->Draw(); |
| 708 | g->SetRange(-3.*hdz2->GetRMS(),+3.*hdz2->GetRMS()); |
| 709 | hdz2->Fit("g","Q"); |
| 710 | zres[2]=g->GetParameter(2); |
| 711 | ezres[2]=g->GetParError(2); |
| 712 | az->cd(4); |
| 713 | hdz3->Draw(); |
| 714 | g->SetRange(-3.*hdz3->GetRMS(),+3.*hdz3->GetRMS()); |
| 715 | hdz3->Fit("g","Q"); |
| 716 | zres[3]=g->GetParameter(2); |
| 717 | ezres[3]=g->GetParError(2); |
| 718 | az->cd(5); |
| 719 | hdz4->Draw(); |
| 720 | g->SetRange(-3.*hdz4->GetRMS(),+3.*hdz4->GetRMS()); |
| 721 | hdz4->Fit("g","Q"); |
| 722 | zres[4]=g->GetParameter(2); |
| 723 | ezres[4]=g->GetParError(2); |
| 724 | az->cd(6); |
| 725 | hdz5->Draw(); |
| 726 | g->SetRange(-3.*hdz5->GetRMS(),+3.*hdz5->GetRMS()); |
| 727 | hdz5->Fit("g","Q"); |
| 728 | zres[5]=g->GetParameter(2); |
| 729 | ezres[5]=g->GetParError(2); |
| 730 | |
| 731 | |
| 732 | // |
| 733 | // pulls VS multiplicity |
| 734 | // |
| 735 | // X |
| 736 | TCanvas *bx = new TCanvas("bx","bx",0,0,900,700); |
| 737 | bx->Divide(3,2); |
| 738 | bx->cd(1); |
| 739 | hpx0->Draw(); |
| 740 | g->SetRange(-3.*hpx0->GetRMS(),+3.*hpx0->GetRMS()); |
| 741 | hpx0->Fit("g","Q"); |
| 742 | xpull[0]=g->GetParameter(2); |
| 743 | expull[0]=g->GetParError(2); |
| 744 | bx->cd(2); |
| 745 | hpx1->Draw(); |
| 746 | g->SetRange(-3.*hpx1->GetRMS(),+3.*hpx1->GetRMS()); |
| 747 | hpx1->Fit("g","Q"); |
| 748 | xpull[1]=g->GetParameter(2); |
| 749 | expull[1]=g->GetParError(2); |
| 750 | bx->cd(3); |
| 751 | hpx2->Draw(); |
| 752 | g->SetRange(-3.*hpx2->GetRMS(),+3.*hpx2->GetRMS()); |
| 753 | hpx2->Fit("g","Q"); |
| 754 | xpull[2]=g->GetParameter(2); |
| 755 | expull[2]=g->GetParError(2); |
| 756 | bx->cd(4); |
| 757 | hpx3->Draw(); |
| 758 | g->SetRange(-3.*hpx3->GetRMS(),+3.*hpx3->GetRMS()); |
| 759 | hpx3->Fit("g","Q"); |
| 760 | xpull[3]=g->GetParameter(2); |
| 761 | expull[3]=g->GetParError(2); |
| 762 | bx->cd(5); |
| 763 | hpx4->Draw(); |
| 764 | g->SetRange(-3.*hpx4->GetRMS(),+3.*hpx4->GetRMS()); |
| 765 | hpx4->Fit("g","Q"); |
| 766 | xpull[4]=g->GetParameter(2); |
| 767 | expull[4]=g->GetParError(2); |
| 768 | bx->cd(6); |
| 769 | hpx5->Draw(); |
| 770 | g->SetRange(-3.*hpx5->GetRMS(),+3.*hpx5->GetRMS()); |
| 771 | hpx5->Fit("g","Q"); |
| 772 | xpull[5]=g->GetParameter(2); |
| 773 | expull[5]=g->GetParError(2); |
| 774 | // Y |
| 775 | TCanvas *by = new TCanvas("by","by",0,0,900,700); |
| 776 | by->Divide(3,2); |
| 777 | by->cd(1); |
| 778 | hpy0->Draw(); |
| 779 | g->SetRange(-3.*hpy0->GetRMS(),+3.*hpy0->GetRMS()); |
| 780 | hpy0->Fit("g","Q"); |
| 781 | ypull[0]=g->GetParameter(2); |
| 782 | eypull[0]=g->GetParError(2); |
| 783 | by->cd(2); |
| 784 | hpy1->Draw(); |
| 785 | g->SetRange(-3.*hpy1->GetRMS(),+3.*hpy1->GetRMS()); |
| 786 | hpy1->Fit("g","Q"); |
| 787 | ypull[1]=g->GetParameter(2); |
| 788 | eypull[1]=g->GetParError(2); |
| 789 | by->cd(3); |
| 790 | hpy2->Draw(); |
| 791 | g->SetRange(-3.*hpy2->GetRMS(),+3.*hpy2->GetRMS()); |
| 792 | hpy2->Fit("g","Q"); |
| 793 | ypull[2]=g->GetParameter(2); |
| 794 | eypull[2]=g->GetParError(2); |
| 795 | by->cd(4); |
| 796 | hpy3->Draw(); |
| 797 | g->SetRange(-3.*hpy3->GetRMS(),+3.*hpy3->GetRMS()); |
| 798 | hpy3->Fit("g","Q"); |
| 799 | ypull[3]=g->GetParameter(2); |
| 800 | eypull[3]=g->GetParError(2); |
| 801 | by->cd(5); |
| 802 | hpy4->Draw(); |
| 803 | g->SetRange(-3.*hpy4->GetRMS(),+3.*hpy4->GetRMS()); |
| 804 | hpy4->Fit("g","Q"); |
| 805 | ypull[4]=g->GetParameter(2); |
| 806 | eypull[4]=g->GetParError(2); |
| 807 | by->cd(6); |
| 808 | hpy5->Draw(); |
| 809 | g->SetRange(-3.*hpy5->GetRMS(),+3.*hpy5->GetRMS()); |
| 810 | hpy5->Fit("g","Q"); |
| 811 | ypull[5]=g->GetParameter(2); |
| 812 | eypull[5]=g->GetParError(2); |
| 813 | // Z |
| 814 | TCanvas *bz = new TCanvas("bz","bz",0,0,900,700); |
| 815 | bz->Divide(3,2); |
| 816 | bz->cd(1); |
| 817 | hpz0->Draw(); |
| 818 | g->SetRange(-3.*hpz0->GetRMS(),+3.*hpz0->GetRMS()); |
| 819 | hpz0->Fit("g","Q"); |
| 820 | zpull[0]=g->GetParameter(2); |
| 821 | ezpull[0]=g->GetParError(2); |
| 822 | bz->cd(2); |
| 823 | hpz1->Draw(); |
| 824 | g->SetRange(-3.*hpz1->GetRMS(),+3.*hpz1->GetRMS()); |
| 825 | hpz1->Fit("g","Q"); |
| 826 | zpull[1]=g->GetParameter(2); |
| 827 | ezpull[1]=g->GetParError(2); |
| 828 | bz->cd(3); |
| 829 | hpz2->Draw(); |
| 830 | g->SetRange(-3.*hpz2->GetRMS(),+3.*hpz2->GetRMS()); |
| 831 | hpz2->Fit("g","Q"); |
| 832 | zpull[2]=g->GetParameter(2); |
| 833 | ezpull[2]=g->GetParError(2); |
| 834 | bz->cd(4); |
| 835 | hpz3->Draw(); |
| 836 | g->SetRange(-3.*hpz3->GetRMS(),+3.*hpz3->GetRMS()); |
| 837 | hpz3->Fit("g","Q"); |
| 838 | zpull[3]=g->GetParameter(2); |
| 839 | ezpull[3]=g->GetParError(2); |
| 840 | bz->cd(5); |
| 841 | hpz4->Draw(); |
| 842 | g->SetRange(-3.*hpz4->GetRMS(),+3.*hpz4->GetRMS()); |
| 843 | hpz4->Fit("g","Q"); |
| 844 | zpull[4]=g->GetParameter(2); |
| 845 | ezpull[4]=g->GetParError(2); |
| 846 | bz->cd(6); |
| 847 | hpz5->Draw(); |
| 848 | g->SetRange(-3.*hpz5->GetRMS(),+3.*hpz5->GetRMS()); |
| 849 | hpz5->Fit("g","Q"); |
| 850 | zpull[5]=g->GetParameter(2); |
| 851 | ezpull[5]=g->GetParError(2); |
| 852 | |
| 853 | gStyle->SetOptFit(0); |
| 854 | |
| 855 | // res VS dNchdy |
| 856 | TCanvas *c6 = new TCanvas("c6","c6",0,0,600,500); |
| 857 | TH2F *fr6 = new TH2F("fr6","",2,0,35,2,0,200); |
| 858 | fr6->SetXTitle("dN_{ch}/dy"); |
| 859 | fr6->SetYTitle("#sigma [#mu m]"); |
| 860 | fr6->Draw(); |
| 861 | sigmamult2[0]=sigmamult2[1]=sigmamult2[2]=sigmamult2[3]=sigmamult2[4]=sigmamult2[5]=0.; |
| 862 | TGraphErrors *gr6x = new TGraphErrors(6,mult2,xres,sigmamult2,exres); |
| 863 | gr6x->Draw("p"); |
| 864 | gr6x->SetMarkerStyle(22); |
| 865 | gr6x->Fit("func","E,R"); |
| 866 | TGraphErrors *gr6z = new TGraphErrors(6,mult2,zres,sigmamult2,ezres); |
| 867 | gr6z->Draw("p"); |
| 868 | gr6z->SetMarkerStyle(26); |
| 869 | gr6z->Fit("func","E,R"); |
| 870 | TLegend *leg6 = new TLegend(0.6,0.75,0.9,0.9); |
| 871 | leg6->AddEntry(gr6x,"x/y coordinate","p"); |
| 872 | leg6->AddEntry(gr6z,"z coordinate","p"); |
| 873 | leg6->SetFillStyle(0); |
| 874 | leg6->SetBorderSize(0); |
| 875 | leg6->Draw(); |
| 876 | |
| 877 | // pull VS dNchdy |
| 878 | TCanvas *c8 = new TCanvas("c8","c8",0,0,600,500); |
| 879 | TH2F *fr8 = new TH2F("fr8","",2,0,35,2,0,2.); |
| 880 | fr8->SetXTitle("dN_{ch}/dy"); |
| 881 | fr8->SetYTitle("pull"); |
| 882 | fr8->Draw(); |
| 883 | TGraphErrors *gr8x = new TGraphErrors(6,mult2,xpull,sigmamult2,expull); |
| 884 | gr8x->Draw("p"); |
| 885 | gr8x->SetMarkerStyle(22); |
| 886 | TGraphErrors *gr8z = new TGraphErrors(6,mult2,zpull,sigmamult2,ezpull); |
| 887 | gr8z->Draw("p"); |
| 888 | gr8z->SetMarkerStyle(26); |
| 889 | TLegend *leg8 = new TLegend(0.6,0.75,0.9,0.9); |
| 890 | leg8->AddEntry(gr6x,"x/y coordinate","p"); |
| 891 | leg8->AddEntry(gr6z,"z coordinate","p"); |
| 892 | leg8->SetFillStyle(0); |
| 893 | leg8->SetBorderSize(0); |
| 894 | leg8->Draw(); |
| 895 | TLine *l8 = new TLine(0,1,35,1); |
| 896 | l8->SetLineStyle(2); |
| 897 | l8->Draw(); |
| 898 | |
| 899 | return; |
| 900 | } |
| 901 | //---------------------------------------------------------------------------- |
| 902 | void AliComputeVtxMeanFromESD(TString file="AliESDs.root", |
| 903 | Int_t mincontr=20) { |
| 904 | //----------------------------------------------------------------------- |
| 905 | // Compute weighted mean and cov. matrix from a set of AliESD |
| 906 | //----------------------------------------------------------------------- |
| 907 | |
| 908 | gStyle->SetOptStat(0); |
| 909 | //gStyle->SetOptFit(0); |
| 910 | |
| 911 | |
| 912 | Double_t vtx[3],covvtx[6]; |
| 913 | TTree *esdTree = 0; |
| 914 | AliESD *esd = 0; |
| 915 | AliESDVertex *vertex = 0; |
| 916 | TString vtitle; |
| 917 | Int_t nc,events,total=0; |
| 918 | |
| 919 | Double_t avx=0.; |
| 920 | Double_t avy=0.; |
| 921 | Double_t avz=0.; |
| 922 | Double_t wgtavx=0.; |
| 923 | Double_t wgtavy=0.; |
| 924 | Double_t wgtavz=0.; |
| 925 | Double_t sum=0.; |
| 926 | Double_t sumwgtx=0.; |
| 927 | Double_t sumwgty=0.; |
| 928 | Double_t sumwgtz=0.; |
| 929 | Double_t rmsx=0; |
| 930 | Double_t rmsy=0; |
| 931 | Double_t rmsz=0; |
| 932 | Double_t varx=0; |
| 933 | Double_t vary=0; |
| 934 | Double_t varz=0; |
| 935 | Double_t covxy=0; |
| 936 | Double_t covxz=0; |
| 937 | Double_t covyz=0; |
| 938 | Double_t eavx,eavy,eavz,ewgtavx,ewgtavy,ewgtavz; |
| 939 | |
| 940 | TH1F* hx = new TH1F("hx","",200,-1000,1000); |
| 941 | hx->SetXTitle("vertex x [#mu m]"); |
| 942 | hx->SetYTitle("events"); |
| 943 | TH1F* hy = new TH1F("hy","",200,-1000,1000); |
| 944 | hy->SetXTitle("vertex y [#mu m]"); |
| 945 | hy->SetYTitle("events"); |
| 946 | TH1F* hz = new TH1F("hz","",200,-10,10); |
| 947 | hz->SetXTitle("vertex z [cm]"); |
| 948 | hz->SetYTitle("events"); |
| 949 | |
| 950 | |
| 951 | for(Int_t i=1; i<100; i++) { |
| 952 | TString inname="event."; |
| 953 | inname+=i; |
| 954 | inname.Append("/"); |
| 955 | inname.Append(file.Data()); |
| 956 | if(gSystem->AccessPathName(inname.Data())) continue; |
| 957 | TFile *fin = TFile::Open(inname.Data()); |
| 958 | esdTree = (TTree*)fin->Get("esdTree"); |
| 959 | if(!esdTree) continue; |
| 960 | esdTree->SetBranchAddress("ESD",&esd); |
| 961 | events = esdTree->GetEntries(); |
| 962 | printf("Number of events in ESD tree: %d\n",events); |
| 963 | total += events; |
| 964 | |
| 965 | for(Int_t iev=0; iev<events; iev++) { //LOOP ON EVENTS |
| 966 | esdTree->GetEvent(iev); |
| 967 | vertex = (AliESDVertex*)esd->GetPrimaryVertex(); |
| 968 | if(!vertex) continue; |
| 969 | nc = vertex->GetNContributors(); |
| 970 | if(nc<mincontr) continue; |
| 971 | vertex->GetXYZ(vtx); |
| 972 | vertex->GetSigmaXYZ(errvtx); |
| 973 | //printf("%f %f %f %f %f %f\n",vtx[0],vtx[1],vtx[2],errvtx[0],errvtx[1],errvtx[2]); |
| 974 | |
| 975 | avx += vtx[0]; |
| 976 | avy += vtx[1]; |
| 977 | avz += vtx[2]; |
| 978 | sum += 1.; |
| 979 | wgtavx += vtx[0]/errvtx[0]/errvtx[0]; |
| 980 | wgtavy += vtx[1]/errvtx[1]/errvtx[1]; |
| 981 | wgtavz += vtx[2]/errvtx[2]/errvtx[2]; |
| 982 | sumwgtx += 1./errvtx[0]/errvtx[0]; |
| 983 | sumwgty += 1./errvtx[1]/errvtx[1]; |
| 984 | sumwgtz += 1./errvtx[2]/errvtx[2]; |
| 985 | |
| 986 | hx->Fill(1e4*vtx[0]); |
| 987 | hy->Fill(1e4*vtx[1]); |
| 988 | hz->Fill(vtx[2]); |
| 989 | |
| 990 | vertex = 0; |
| 991 | } |
| 992 | esdTree=0; |
| 993 | fin->Close(); |
| 994 | delete fin; |
| 995 | } |
| 996 | |
| 997 | avx /= sum; |
| 998 | avy /= sum; |
| 999 | avz /= sum; |
| 1000 | wgtavx /= sumwgtx; |
| 1001 | wgtavy /= sumwgty; |
| 1002 | wgtavz /= sumwgtz; |
| 1003 | ewgtavx = 1./TMath::Sqrt(sumwgtx); |
| 1004 | ewgtavy = 1./TMath::Sqrt(sumwgty); |
| 1005 | ewgtavz = 1./TMath::Sqrt(sumwgtz); |
| 1006 | |
| 1007 | |
| 1008 | for(Int_t i=1; i<100; i++) { |
| 1009 | TString inname="event."; |
| 1010 | inname+=i; |
| 1011 | inname.Append("/"); |
| 1012 | inname.Append(file.Data()); |
| 1013 | if(gSystem->AccessPathName(inname.Data())) continue; |
| 1014 | TFile *fin = TFile::Open(inname.Data()); |
| 1015 | esdTree = (TTree*)fin->Get("esdTree"); |
| 1016 | if(!esdTree) continue; |
| 1017 | esdTree->SetBranchAddress("ESD",&esd); |
| 1018 | events = esdTree->GetEntries(); |
| 1019 | for(Int_t iev=0; iev<events; iev++) { //LOOP ON EVENTS |
| 1020 | esdTree->GetEvent(iev); |
| 1021 | vertex = (AliESDVertex*)esd->GetPrimaryVertex(); |
| 1022 | if(!vertex) continue; |
| 1023 | nc = vertex->GetNContributors(); |
| 1024 | if(nc<mincontr) continue; |
| 1025 | vertex->GetXYZ(vtx); |
| 1026 | vertex->GetSigmaXYZ(errvtx); |
| 1027 | |
| 1028 | varx += (vtx[0]-avx)*(vtx[0]-avx); |
| 1029 | vary += (vtx[1]-avy)*(vtx[1]-avy); |
| 1030 | varz += (vtx[2]-avz)*(vtx[2]-avz); |
| 1031 | covxy += (vtx[0]-avx)*(vtx[1]-avy); |
| 1032 | covxz += (vtx[0]-avx)*(vtx[2]-avz); |
| 1033 | covyz += (vtx[1]-avy)*(vtx[2]-avz); |
| 1034 | |
| 1035 | vertex = 0; |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | varx /= sum; |
| 1040 | vary /= sum; |
| 1041 | varz /= sum; |
| 1042 | covxy /= sum; |
| 1043 | covxz /= sum; |
| 1044 | covyz /= sum; |
| 1045 | rmsx = TMath::Sqrt(varx); |
| 1046 | rmsy = TMath::Sqrt(vary); |
| 1047 | rmsz = TMath::Sqrt(varz); |
| 1048 | eavx = rmsx/TMath::Sqrt(sum); |
| 1049 | eavy = rmsy/TMath::Sqrt(sum); |
| 1050 | eavz = rmsz/TMath::Sqrt(sum); |
| 1051 | |
| 1052 | |
| 1053 | printf("\n\nNumber of events: Total %d, Used %d\n",total,sum); |
| 1054 | printf("Average:\n x = (%f +- %f) mum\n y = (%f +- %f) mum\n z = (%f +- %f) mu\n",1e4*avx,1e4*eavx,1e4*avy,1e4*eavy,1e4*avz,1e4*eavz); |
| 1055 | printf("Weighted Average:\n x = (%f +- %f) mum\n y = (%f +- %f) mum\n z = (%f +- %f) mum\n",1e4*wgtavx,1e4*ewgtavx,1e4*wgtavy,1e4*ewgtavy,1e4*wgtavz,1e4*ewgtavz); |
| 1056 | printf("RMS:\n x = %f mum\n y = %f mum\n z = %f mum\n",1e4*rmsx,1e4*rmsy,1e4*rmsz); |
| 1057 | |
| 1058 | TCanvas *c = new TCanvas("c","c",0,0,1000,500); |
| 1059 | c->Divide(3,1); |
| 1060 | c->cd(1); |
| 1061 | hx->Draw(); |
| 1062 | TF1 *gx = new TF1("gx","gaus",-1000,1000); |
| 1063 | gx->SetLineColor(2); |
| 1064 | hx->Fit(gx); |
| 1065 | TF1 *gxx = (TF1*)gx->Clone("gxx"); |
| 1066 | gxx->FixParameter(2,50.); |
| 1067 | gxx->SetLineStyle(2); |
| 1068 | gxx->Draw("same"); |
| 1069 | c->cd(2); |
| 1070 | hy->Draw(); |
| 1071 | TF1 *gy = new TF1("gy","gaus",-1000,1000); |
| 1072 | gy->SetLineColor(2); |
| 1073 | hy->Fit(gy); |
| 1074 | TF1 *gyy = (TF1*)gy->Clone("gyy"); |
| 1075 | gyy->FixParameter(2,50.); |
| 1076 | gyy->SetLineStyle(2); |
| 1077 | gyy->Draw("same"); |
| 1078 | c->cd(3); |
| 1079 | hz->Draw(); |
| 1080 | TF1 *gz = new TF1("gz","gaus",-10,10); |
| 1081 | gz->SetLineColor(2); |
| 1082 | hz->Fit(gz); |
| 1083 | TF1 *gzz = (TF1*)gz->Clone("gzz"); |
| 1084 | gzz->FixParameter(2,5.3); |
| 1085 | gzz->SetLineStyle(2); |
| 1086 | gzz->Draw("same"); |
| 1087 | |
| 1088 | vtx[0] = wgtavx; |
| 1089 | vtx[1] = wgtavy; |
| 1090 | vtx[2] = wgtavz; |
| 1091 | covvtx[0] = varx; |
| 1092 | covvtx[1] = covxy; |
| 1093 | covvtx[2] = vary; |
| 1094 | covvtx[3] = covxz; |
| 1095 | covvtx[4] = covyz; |
| 1096 | covvtx[5] = 5.3; |
| 1097 | AliESDVertex *vtxmean = new AliESDVertex(vtx,covvtx,0.,(Int_t)sum); |
| 1098 | vtxmean->SetTitle("Vertex from weighted average"); |
| 1099 | TFile *out = new TFile("AliESDVertexMean.root","recreate"); |
| 1100 | vtxmean->Write("vtxmean"); |
| 1101 | out->Close(); |
| 1102 | |
| 1103 | return; |
| 1104 | } |
| 1105 | //---------------------------------------------------------------------------- |
| 1106 | void AliComputeVtxMeanFromTree(TString file="AliESDVertices.root", |
| 1107 | Int_t mincontr=20) { |
| 1108 | //----------------------------------------------------------------------- |
| 1109 | // Compute weighted mean and cov. matrix from a set of AliESDVertices |
| 1110 | //----------------------------------------------------------------------- |
| 1111 | gStyle->SetOptStat(0); |
| 1112 | //gStyle->SetOptFit(0); |
| 1113 | |
| 1114 | |
| 1115 | Double_t vtx[3],covvtx[6]; |
| 1116 | TString vtitle; |
| 1117 | Int_t nc,total=0; |
| 1118 | |
| 1119 | Double_t avx=0.; |
| 1120 | Double_t avy=0.; |
| 1121 | Double_t avz=0.; |
| 1122 | Double_t wgtavx=0.; |
| 1123 | Double_t wgtavy=0.; |
| 1124 | Double_t wgtavz=0.; |
| 1125 | Double_t sum=0.; |
| 1126 | Double_t sumwgtx=0.; |
| 1127 | Double_t sumwgty=0.; |
| 1128 | Double_t sumwgtz=0.; |
| 1129 | Double_t rmsx=0; |
| 1130 | Double_t rmsy=0; |
| 1131 | Double_t rmsz=0; |
| 1132 | Double_t eavx,eavy,eavz,ewgtavx,ewgtavy,ewgtavz; |
| 1133 | |
| 1134 | TH1F* hx = new TH1F("hx","",200,-1000,1000); |
| 1135 | hx->SetXTitle("vertex x [#mu m]"); |
| 1136 | hx->SetYTitle("events"); |
| 1137 | TH1F* hy = new TH1F("hy","",200,-1000,1000); |
| 1138 | hy->SetXTitle("vertex y [#mu m]"); |
| 1139 | hy->SetYTitle("events"); |
| 1140 | TH1F* hz = new TH1F("hz","",200,-10,10); |
| 1141 | hz->SetXTitle("vertex z [cm]"); |
| 1142 | hz->SetYTitle("events"); |
| 1143 | |
| 1144 | |
| 1145 | if(gSystem->AccessPathName(file.Data())) continue; |
| 1146 | TFile *fin = TFile::Open(file.Data()); |
| 1147 | TTree *tree = (TTree*)fin->Get("TreeV"); |
| 1148 | AliESDVertex *vertex = 0; |
| 1149 | tree->SetBranchAddress("AliESDVertex",&vertex); |
| 1150 | Int_t entries = (Int_t)tree->GetEntries(); |
| 1151 | |
| 1152 | for(Int_t i=0; i<entries; i++) { |
| 1153 | total += 1; |
| 1154 | tree->GetEvent(i); |
| 1155 | nc = vertex->GetNContributors(); |
| 1156 | if(nc<mincontr) continue; |
| 1157 | vertex->GetXYZ(vtx); |
| 1158 | vertex->GetSigmaXYZ(errvtx); |
| 1159 | //printf("%f %f %f %f %f %f\n",vtx[0],vtx[1],vtx[2],errvtx[0],errvtx[1],errvtx[2]); |
| 1160 | |
| 1161 | avx += vtx[0]; |
| 1162 | avy += vtx[1]; |
| 1163 | avz += vtx[2]; |
| 1164 | sum += 1.; |
| 1165 | wgtavx += vtx[0]/errvtx[0]/errvtx[0]; |
| 1166 | wgtavy += vtx[1]/errvtx[1]/errvtx[1]; |
| 1167 | wgtavz += vtx[2]/errvtx[2]/errvtx[2]; |
| 1168 | sumwgtx += 1./errvtx[0]/errvtx[0]; |
| 1169 | sumwgty += 1./errvtx[1]/errvtx[1]; |
| 1170 | sumwgtz += 1./errvtx[2]/errvtx[2]; |
| 1171 | |
| 1172 | hx->Fill(1e4*vtx[0]); |
| 1173 | hy->Fill(1e4*vtx[1]); |
| 1174 | hz->Fill(vtx[2]); |
| 1175 | |
| 1176 | vertex = 0; |
| 1177 | } |
| 1178 | |
| 1179 | avx /= sum; |
| 1180 | avy /= sum; |
| 1181 | avz /= sum; |
| 1182 | wgtavx /= sumwgtx; |
| 1183 | wgtavy /= sumwgty; |
| 1184 | wgtavz /= sumwgtz; |
| 1185 | ewgtavx = 1./TMath::Sqrt(sumwgtx); |
| 1186 | ewgtavy = 1./TMath::Sqrt(sumwgty); |
| 1187 | ewgtavz = 1./TMath::Sqrt(sumwgtz); |
| 1188 | |
| 1189 | |
| 1190 | for(Int_t i=0; i<entries; i++) { |
| 1191 | tree->GetEvent(i); |
| 1192 | nc = vertex->GetNContributors(); |
| 1193 | if(nc<mincontr) continue; |
| 1194 | vertex->GetXYZ(vtx); |
| 1195 | vertex->GetSigmaXYZ(errvtx); |
| 1196 | |
| 1197 | varx += (vtx[0]-avx)*(vtx[0]-avx); |
| 1198 | vary += (vtx[1]-avy)*(vtx[1]-avy); |
| 1199 | varz += (vtx[2]-avz)*(vtx[2]-avz); |
| 1200 | covxy += (vtx[0]-avx)*(vtx[1]-avy); |
| 1201 | covxz += (vtx[0]-avx)*(vtx[2]-avz); |
| 1202 | covyz += (vtx[1]-avy)*(vtx[2]-avz); |
| 1203 | |
| 1204 | vertex = 0; |
| 1205 | } |
| 1206 | |
| 1207 | varx /= sum; |
| 1208 | vary /= sum; |
| 1209 | varz /= sum; |
| 1210 | covxy /= sum; |
| 1211 | covxz /= sum; |
| 1212 | covyz /= sum; |
| 1213 | rmsx = TMath::Sqrt(varx); |
| 1214 | rmsy = TMath::Sqrt(vary); |
| 1215 | rmsz = TMath::Sqrt(varz); |
| 1216 | eavx = rmsx/TMath::Sqrt(sum); |
| 1217 | eavy = rmsy/TMath::Sqrt(sum); |
| 1218 | eavz = rmsz/TMath::Sqrt(sum); |
| 1219 | |
| 1220 | |
| 1221 | printf("\n\nNumber of events: Total %d, Used %d\n",total,sum); |
| 1222 | printf("Average:\n x = (%f +- %f) mum\n y = (%f +- %f) mum\n z = (%f +- %f) mu\n",1e4*avx,1e4*eavx,1e4*avy,1e4*eavy,1e4*avz,1e4*eavz); |
| 1223 | printf("Weighted Average:\n x = (%f +- %f) mum\n y = (%f +- %f) mum\n z = (%f +- %f) mum\n",1e4*wgtavx,1e4*ewgtavx,1e4*wgtavy,1e4*ewgtavy,1e4*wgtavz,1e4*ewgtavz); |
| 1224 | printf("RMS:\n x = %f mum\n y = %f mum\n z = %f mum\n",1e4*rmsx,1e4*rmsy,1e4*rmsz); |
| 1225 | |
| 1226 | TCanvas *c = new TCanvas("c","c",0,0,1000,500); |
| 1227 | c->Divide(3,1); |
| 1228 | c->cd(1); |
| 1229 | hx->Draw(); |
| 1230 | TF1 *gx = new TF1("gx","gaus",-1000,1000); |
| 1231 | gx->SetLineColor(2); |
| 1232 | hx->Fit(gx); |
| 1233 | TF1 *gxx = (TF1*)gx->Clone("gxx"); |
| 1234 | gxx->FixParameter(2,50.); |
| 1235 | gxx->SetLineStyle(2); |
| 1236 | gxx->Draw("same"); |
| 1237 | c->cd(2); |
| 1238 | hy->Draw(); |
| 1239 | TF1 *gy = new TF1("gy","gaus",-1000,1000); |
| 1240 | gy->SetLineColor(2); |
| 1241 | hy->Fit(gy); |
| 1242 | TF1 *gyy = (TF1*)gy->Clone("gyy"); |
| 1243 | gyy->FixParameter(2,50.); |
| 1244 | gyy->SetLineStyle(2); |
| 1245 | gyy->Draw("same"); |
| 1246 | c->cd(3); |
| 1247 | hz->Draw(); |
| 1248 | TF1 *gz = new TF1("gz","gaus",-10,10); |
| 1249 | gz->SetLineColor(2); |
| 1250 | hz->Fit(gz); |
| 1251 | TF1 *gzz = (TF1*)gz->Clone("gzz"); |
| 1252 | gzz->FixParameter(2,5.3); |
| 1253 | gzz->SetLineStyle(2); |
| 1254 | gzz->Draw("same"); |
| 1255 | |
| 1256 | vtx[0] = wgtavx; |
| 1257 | vtx[1] = wgtavy; |
| 1258 | vtx[2] = wgtavz; |
| 1259 | covvtx[0] = varx; |
| 1260 | covvtx[1] = covxy; |
| 1261 | covvtx[2] = vary; |
| 1262 | covvtx[3] = covxz; |
| 1263 | covvtx[4] = covyz; |
| 1264 | covvtx[5] = 5.3; |
| 1265 | AliESDVertex *vtxmean = new AliESDVertex(vtx,covvtx,0.,(Int_t)sum); |
| 1266 | vtxmean->SetTitle("Vertex from weighted average"); |
| 1267 | TFile *out = new TFile("AliESDVertexMean.root","recreate"); |
| 1268 | vtxmean->Write("vtxmean"); |
| 1269 | out->Close(); |
| 1270 | |
| 1271 | return; |
| 1272 | } |
| 1273 | //--------------------------------------------------------------------------- |
git://git.uio.no / u / mrichter / AliRoot.git / blame