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Fixes, AOD merge now uses AODConfig
[u/mrichter/AliRoot.git] / PWGLF / FORWARD / analysis2 / AliForwardUtil.cxx
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7984e5f7 1//
2// Utilities used in the forward multiplcity analysis
3//
4//
7e4038b5 5#include "AliForwardUtil.h"
1ff25622 6//#include <ARVersion.h>
9d99b0dd 7#include <AliAnalysisManager.h>
8#include "AliAODForwardMult.h"
9#include <AliLog.h>
10#include <AliInputEventHandler.h>
290052e7 11#include <AliAODInputHandler.h>
12#include <AliAODHandler.h>
13#include <AliAODEvent.h>
9d99b0dd 14#include <AliESDEvent.h>
290052e7 15#include <AliAnalysisTaskSE.h>
9d99b0dd 16#include <AliPhysicsSelection.h>
17#include <AliTriggerAnalysis.h>
18#include <AliMultiplicity.h>
241cca4d 19#include <TParameter.h>
7e4038b5 20#include <TH2D.h>
9d99b0dd 21#include <TH1I.h>
7f759bb7 22#include <TF1.h>
23#include <TFitResult.h>
7e4038b5 24#include <TMath.h>
7f759bb7 25#include <TError.h>
f53fb4f6 26#include <TROOT.h>
a19faec0 27#define FIT_OPTIONS "RNS"
7f759bb7 28
1ff25622 29//====================================================================
30ULong_t AliForwardUtil::AliROOTRevision()
31{
32#ifdef ALIROOT_SVN_REVISION
33 return ALIROOT_SVN_REVISION;
77f97e3f
CHC		 34#elif defined(ALIROOT_REVISION)
35 static ULong_t ret = 0;
36 if (ret != 0) return ret;
37
38 // Select first 32bits of the 40byte long check-sum
39 TString rev(ALIROOT_REVISION, 8);
40 for (ULong_t i = 0; i < 8; i++) {
41 ULong_t p = 0;
42 switch (rev[i]) {
43 case '0': p = 0; break;
44 case '1': p = 1; break;
45 case '2': p = 2; break;
46 case '3': p = 3; break;
47 case '4': p = 4; break;
48 case '5': p = 5; break;
49 case '6': p = 6; break;
50 case '7': p = 7; break;
51 case '8': p = 8; break;
52 case '9': p = 9; break;
53 case 'a': case 'A': p = 10; break;
54 case 'b': case 'B': p = 11; break;
55 case 'c': case 'C': p = 12; break;
56 case 'd': case 'D': p = 13; break;
57 case 'e': case 'E': p = 14; break;
58 case 'f': case 'F': p = 15; break;
59 }
60 ret |= (p << (32-4*(i+1)));
61 }
62 return ret;
7095962e
CHC		 63#else
64 return 0;
1ff25622 65#endif
66}
67//____________________________________________________________________
68ULong_t AliForwardUtil::AliROOTBranch()
69{
93a63fe1 70 // Do something here when we switch to git - sigh!
77f97e3f
CHC		 71#if !defined(ALIROOT_SVN_BRANCH) && !defined(ALIROOT_BRANCH)
72 return 0;
73#endif
1ff25622 74 static ULong_t ret = 0;
75 if (ret != 0) return ret;
77f97e3f
CHC		 76 TString str;
77 TString top;
78#ifdef ALIROOT_SVN_BRANCH
79 str = ALIROOT_SVN_BRANCH;
80 top = "trunk";
81#elif defined(ALIROOT_BRANCH)
82 str = ALIROOT_BRANCH;
83 top = "master";
84#endif
b587feef 85 if (str.IsNull()) return 0xFFFFFFFF;
1ff25622 86 if (str[0] == 'v') str.Remove(0,1);
77f97e3f 87 if (str.EqualTo(top)) return ret = 0xFFFFFFFF;
1ff25622 88
89 TObjArray* tokens = str.Tokenize("-");
fc007be9 90 TObjString* pMajor = tokens->GetEntries()>0 ?
91 (static_cast<TObjString*>(tokens->At(0))) : 0;
92 TObjString* pMinor = tokens->GetEntries()>1 ?
93 (static_cast<TObjString*>(tokens->At(1))) : 0;
94 TObjString* pRelea = tokens->GetEntries() > 2 ?
95 static_cast<TObjString*>(tokens->At(2)) : 0;
96 TObjString* pAn = tokens->GetEntries() > 3 ?
97 static_cast<TObjString*>(tokens->At(3)) : 0;
98 TString sMajor,sMinor,sRelea;
99 if (pMajor) sMajor = pMajor->String().Strip(TString::kLeading, '0');
cd9fe3f8 100 if (pMinor) sMinor = pMinor->String().Strip(TString::kLeading, '0');
fc007be9 101 if (pRelea) sRelea = pRelea->String().Strip(TString::kLeading, '0');
102 //
1ff25622 103 ret = (((sMajor.Atoi() & 0xFF) << 12) |
104 ((sMinor.Atoi() & 0xFF) << 8) |
105 ((sRelea.Atoi() & 0xFF) << 4) |
106 (pAn ? 0xAA : 0));
107
108 return ret;
1ff25622 109}
110
0bd4b00f 111//====================================================================
112UShort_t
113AliForwardUtil::ParseCollisionSystem(const char* sys)
114{
7984e5f7 115 //
116 // Parse a collision system spec given in a string. Known values are
117 //
0151a6c6 118 // - "ppb", "p-pb", "pa", "p-a" which returns kPPb
119 // - "pp", "p-p" which returns kPP
120 // - "PbPb", "Pb-Pb", "A-A", which returns kPbPb
7984e5f7 121 // - Everything else gives kUnknown
122 //
123 // Parameters:
124 // sys Collision system spec
125 //
126 // Return:
127 // Collision system id
128 //
0bd4b00f 129 TString s(sys);
130 s.ToLower();
0151a6c6 131 // we do pA first to avoid pp catch on ppb string (AH)
132 if (s.Contains("p-pb") || s.Contains("ppb")) return AliForwardUtil::kPPb;
133 if (s.Contains("p-a") || s.Contains("pa")) return AliForwardUtil::kPPb;
d4d486f8 134 if (s.Contains("a-p") || s.Contains("ap")) return AliForwardUtil::kPPb;
0151a6c6 135 if (s.Contains("p-p") || s.Contains("pp")) return AliForwardUtil::kPP;
136 if (s.Contains("pb-pb") || s.Contains("pbpb")) return AliForwardUtil::kPbPb;
137 if (s.Contains("a-a") || s.Contains("aa")) return AliForwardUtil::kPbPb;
0bd4b00f 138 return AliForwardUtil::kUnknown;
139}
140//____________________________________________________________________
141const char*
142AliForwardUtil::CollisionSystemString(UShort_t sys)
143{
7984e5f7 144 //
145 // Get a string representation of the collision system
146 //
147 // Parameters:
148 // sys Collision system
149 // - kPP -> "pp"
150 // - kPbPb -> "PbPb"
151 // - anything else gives "unknown"
152 //
153 // Return:
154 // String representation of the collision system
155 //
0bd4b00f 156 switch (sys) {
157 case AliForwardUtil::kPP: return "pp";
158 case AliForwardUtil::kPbPb: return "PbPb";
0151a6c6 159 case AliForwardUtil::kPPb: return "pPb";
0bd4b00f 160 }
161 return "unknown";
162}
38229ecd 163//____________________________________________________________________
164Float_t
165AliForwardUtil::BeamRapidity(Float_t beam, UShort_t z, UShort_t a)
166{
167 const Double_t pMass = 9.38271999999999995e-01;
168 const Double_t nMass = 9.39564999999999984e-01;
169 Double_t beamE = z * beam / 2;
170 Double_t beamM = z * pMass + (a - z) * nMass;
171 Double_t beamP = TMath::Sqrt(beamE * beamE - beamM * beamM);
172 Double_t beamY = .5* TMath::Log((beamE+beamP) / (beamE-beamP));
173 return beamY;
174}
175//____________________________________________________________________
176Float_t
177AliForwardUtil::CenterOfMassEnergy(Float_t beam,
178 UShort_t z1,
179 UShort_t a1,
180 Short_t z2,
181 Short_t a2)
182{
183 // Calculate the center of mass energy given target/projectile
184 // mass and charge numbers
185 if (z2 < 0) z2 = z1;
186 if (a2 < 0) a2 = a1;
187 return TMath::Sqrt(Float_t(z1*z2)/a1/a2) * beam;
188}
189//____________________________________________________________________
190Float_t
191AliForwardUtil::CenterOfMassRapidity(UShort_t z1,
192 UShort_t a1,
193 Short_t z2,
194 Short_t a2)
195{
196 // Calculate the center of mass rapidity (shift) given target/projectile
197 // mass and charge numbers
198 if (z2 < 0) z2 = z1;
199 if (a2 < 0) a2 = a1;
200 if (z2 == z1 && a2 == a1) return 0;
201 return .5 * TMath::Log(Float_t(z1*a2)/z2/a1);
202}
203
4dcc6110 204namespace {
205 UShort_t CheckSNN(Float_t energy)
206 {
207 if (TMath::Abs(energy - 900.) < 10) return 900;
208 if (TMath::Abs(energy - 2400.) < 10) return 2400;
209 if (TMath::Abs(energy - 2760.) < 20) return 2760;
210 if (TMath::Abs(energy - 4400.) < 10) return 4400;
211 if (TMath::Abs(energy - 5022.) < 10) return 5023;
212 if (TMath::Abs(energy - 5500.) < 40) return 5500;
213 if (TMath::Abs(energy - 7000.) < 10) return 7000;
214 if (TMath::Abs(energy - 8000.) < 10) return 8000;
215 if (TMath::Abs(energy - 10000.) < 10) return 10000;
216 if (TMath::Abs(energy - 14000.) < 10) return 14000;
217 return 0;
218 }
219}
0bd4b00f 220//____________________________________________________________________
221UShort_t
38229ecd 222AliForwardUtil::ParseCenterOfMassEnergy(UShort_t sys, Float_t beam)
0bd4b00f 223{
7984e5f7 224 //
225 // Parse the center of mass energy given as a float and return known
226 // values as a unsigned integer
227 //
228 // Parameters:
38229ecd 229 // sys Collision system (needed for AA)
230 // beam Center of mass energy * total charge
7984e5f7 231 //
232 // Return:
233 // Center of mass energy per nucleon
234 //
38229ecd 235 Float_t energy = beam;
cc83fca2 236 // Below no longer needed apparently
237 // if (sys == AliForwardUtil::kPbPb) energy = energy / 208 * 82;
38229ecd 238 if (sys == AliForwardUtil::kPPb)
239 energy = CenterOfMassEnergy(beam, 82, 208, 1, 1);
8449e3e0 240 else if (sys == AliForwardUtil::kPbPb)
241 energy = CenterOfMassEnergy(beam, 82, 208, 82, 208);
4dcc6110 242 UShort_t ret = CheckSNN(energy);
243 if (ret > 1) return ret;
244 if (sys == AliForwardUtil::kPbPb || sys == AliForwardUtil::kPPb) {
245 ret = CheckSNN(beam);
246 }
247 return ret;
0bd4b00f 248}
249//____________________________________________________________________
250const char*
251AliForwardUtil::CenterOfMassEnergyString(UShort_t cms)
252{
7984e5f7 253 //
254 // Get a string representation of the center of mass energy per nuclean
255 //
256 // Parameters:
257 // cms Center of mass energy per nucleon
258 //
259 // Return:
260 // String representation of the center of mass energy per nuclean
261 //
0bd4b00f 262 return Form("%04dGeV", cms);
263}
264//____________________________________________________________________
265Short_t
266AliForwardUtil::ParseMagneticField(Float_t v)
267{
7984e5f7 268 //
269 // Parse the magnetic field (in kG) as given by a floating point number
270 //
271 // Parameters:
272 // field Magnetic field in kG
273 //
274 // Return:
275 // Short integer value of magnetic field in kG
276 //
0bd4b00f 277 if (TMath::Abs(v - 5.) < 1 ) return +5;
278 if (TMath::Abs(v + 5.) < 1 ) return -5;
279 if (TMath::Abs(v) < 1) return 0;
280 return 999;
281}
282//____________________________________________________________________
283const char*
284AliForwardUtil::MagneticFieldString(Short_t f)
285{
7984e5f7 286 //
287 // Get a string representation of the magnetic field
288 //
289 // Parameters:
290 // field Magnetic field in kG
291 //
292 // Return:
293 // String representation of the magnetic field
294 //
0bd4b00f 295 return Form("%01dkG", f);
296}
290052e7 297//_____________________________________________________________________
298AliAODEvent* AliForwardUtil::GetAODEvent(AliAnalysisTaskSE* task)
299{
300 // Check if AOD is the output event
576472c1 301 if (!task) ::Fatal("GetAODEvent", "Null task given, cannot do that");
302
290052e7 303 AliAODEvent* ret = task->AODEvent();
304 if (ret) return ret;
305
306 // Check if AOD is the input event
307 ret = dynamic_cast<AliAODEvent*>(task->InputEvent());
308 if (!ret) ::Warning("GetAODEvent", "No AOD event found");
309
310 return ret;
311}
312//_____________________________________________________________________
313UShort_t AliForwardUtil::CheckForAOD()
314{
315 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
316 if (dynamic_cast<AliAODInputHandler*>(am->GetInputEventHandler())) {
671df6c9 317 // ::Info("CheckForAOD", "Found AOD Input handler");
290052e7 318 return 1;
319 }
320 if (dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler())) {
c8b1a7db 321 // ::Info("CheckForAOD", "Found AOD Output handler");
290052e7 322 return 2;
323 }
324
325 ::Warning("CheckForAOD",
326 "Neither and input nor output AOD handler is specified");
327 return 0;
328}
329//_____________________________________________________________________
330Bool_t AliForwardUtil::CheckForTask(const char* clsOrName, Bool_t cls)
331{
332 AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager();
333 if (!cls) {
334 AliAnalysisTask* t = am->GetTask(clsOrName);
335 if (!t) {
336 ::Warning("CheckForTask", "Task %s not found in manager", clsOrName);
337 return false;
338 }
339 ::Info("CheckForTask", "Found task %s", clsOrName);
340 return true;
341 }
342 TClass* dep = gROOT->GetClass(clsOrName);
343 if (!dep) {
344 ::Warning("CheckForTask", "Unknown class %s for needed task", clsOrName);
345 return false;
346 }
347 TIter next(am->GetTasks());
348 TObject* o = 0;
349 while ((o = next())) {
350 if (o->IsA()->InheritsFrom(dep)) {
351 ::Info("CheckForTask", "Found task of class %s: %s",
352 clsOrName, o->GetName());
353 return true;
354 }
355 }
356 ::Warning("CheckForTask", "No task of class %s was found", clsOrName);
357 return false;
358}
359
241cca4d 360//_____________________________________________________________________
361TObject* AliForwardUtil::MakeParameter(const Char_t* name, UShort_t value)
362{
363 TParameter<int>* ret = new TParameter<int>(name, value);
8449e3e0 364 ret->SetMergeMode('f');
241cca4d 365 ret->SetUniqueID(value);
366 return ret;
367}
368//_____________________________________________________________________
369TObject* AliForwardUtil::MakeParameter(const Char_t* name, Int_t value)
370{
371 TParameter<int>* ret = new TParameter<int>(name, value);
8449e3e0 372 ret->SetMergeMode('f');
241cca4d 373 ret->SetUniqueID(value);
374 return ret;
375}
376//_____________________________________________________________________
1ff25622 377TObject* AliForwardUtil::MakeParameter(const Char_t* name, ULong_t value)
378{
379 TParameter<Long_t>* ret = new TParameter<Long_t>(name, value);
8449e3e0 380 ret->SetMergeMode('f');
1ff25622 381 ret->SetUniqueID(value);
382 return ret;
383}
384//_____________________________________________________________________
241cca4d 385TObject* AliForwardUtil::MakeParameter(const Char_t* name, Double_t value)
386{
387 TParameter<double>* ret = new TParameter<double>(name, value);
1f7aa5c7 388 // Float_t v = value;
389 // UInt_t* tmp = reinterpret_cast<UInt_t*>(&v);
8449e3e0 390 ret->SetMergeMode('f');
1f7aa5c7 391 // ret->SetUniqueID(*tmp);
241cca4d 392 return ret;
393}
394//_____________________________________________________________________
395TObject* AliForwardUtil::MakeParameter(const Char_t* name, Bool_t value)
396{
397 TParameter<bool>* ret = new TParameter<bool>(name, value);
8449e3e0 398 ret->SetMergeMode('f');
241cca4d 399 ret->SetUniqueID(value);
400 return ret;
401}
402
403//_____________________________________________________________________
404void AliForwardUtil::GetParameter(TObject* o, UShort_t& value)
405{
406 if (!o) return;
1f7aa5c7 407 TParameter<int>* p = static_cast<TParameter<int>*>(o);
e65b8b56 408 if (p->TestBit(BIT(19)))
1f7aa5c7 409 value = p->GetVal();
410 else
411 value = o->GetUniqueID();
241cca4d 412}
413//_____________________________________________________________________
414void AliForwardUtil::GetParameter(TObject* o, Int_t& value)
415{
416 if (!o) return;
1f7aa5c7 417 TParameter<int>* p = static_cast<TParameter<int>*>(o);
e65b8b56 418 if (p->TestBit(BIT(19)))
1f7aa5c7 419 value = p->GetVal();
420 else
421 value = o->GetUniqueID();
241cca4d 422}
423//_____________________________________________________________________
1ff25622 424void AliForwardUtil::GetParameter(TObject* o, ULong_t& value)
425{
426 if (!o) return;
1f7aa5c7 427 TParameter<Long_t>* p = static_cast<TParameter<Long_t>*>(o);
e65b8b56 428 if (p->TestBit(BIT(19)))
1f7aa5c7 429 value = p->GetVal();
430 else
431 value = o->GetUniqueID();
1ff25622 432}
433//_____________________________________________________________________
241cca4d 434void AliForwardUtil::GetParameter(TObject* o, Double_t& value)
435{
436 if (!o) return;
1f7aa5c7 437 TParameter<double>* p = static_cast<TParameter<double>*>(o);
e65b8b56 438 if (p->TestBit(BIT(19)))
1f7aa5c7 439 value = p->GetVal(); // o->GetUniqueID();
440 else {
441 UInt_t i = o->GetUniqueID();
442 Float_t v = *reinterpret_cast<Float_t*>(&i);
443 value = v;
444 }
241cca4d 445}
446//_____________________________________________________________________
447void AliForwardUtil::GetParameter(TObject* o, Bool_t& value)
448{
449 if (!o) return;
1f7aa5c7 450 TParameter<bool>* p = static_cast<TParameter<bool>*>(o);
e65b8b56 451 if (p->TestBit(BIT(19)))
1f7aa5c7 452 value = p->GetVal(); // o->GetUniqueID();
453 else
454 value = o->GetUniqueID();
241cca4d 455}
290052e7 456
1f7aa5c7 457#if 0
6f4a5c0d 458//_____________________________________________________________________
5ca83fee 459Double_t AliForwardUtil::GetStripR(Char_t ring, UShort_t strip)
6f4a5c0d 460{
1f7aa5c7 461 // Get max R of ring
462 //
463 // Optimized version that has a cache
464 static TArrayD inner;
465 static TArrayD outer;
466 if (inner.GetSize() <= 0 || outer.GetSize() <= 0) {
467 const Double_t minR[] = { 4.5213, 15.4 };
468 const Double_t maxR[] = { 17.2, 28.0 };
469 const Int_t nStr[] = { 512, 256 };
470 for (Int_t q = 0; q < 2; q++) {
471 TArrayD& a = (q == 0 ? inner : outer);
472 a.Set(nStr[q]);
473
474 for (Int_t it = 0; it < nStr[q]; it++) {
475 Double_t rad = maxR[q] - minR[q];
476 Double_t segment = rad / nStr[q];
477 Double_t r = minR[q] + segment*strip;
478 a[it] = r;
479 }
480 }
481 }
482 if (ring == 'I' || ring == 'i') return inner.At(strip);
483 return outer.At(strip);
484}
485#else
486//_____________________________________________________________________
487Double_t AliForwardUtil::GetStripR(Char_t ring, UShort_t strip)
488{
489 // Get max R of ring
490 //
491 // New implementation has only one branch
492 const Double_t minR[] = { 4.5213, 15.4 };
493 const Double_t maxR[] = { 17.2, 28.0 };
494 const Int_t nStr[] = { 512, 256 };
495
496 Int_t q = (ring == 'I' || ring == 'i') ? 0 : 1;
497 Double_t rad = maxR[q] - minR[q];
498 Double_t segment = rad / nStr[q];
499 Double_t r = minR[q] + segment*strip;
6f4a5c0d 500
5ca83fee 501 return r;
502}
1f7aa5c7 503#endif
5ca83fee 504
1f7aa5c7 505#if 1
506//_____________________________________________________________________
507Double_t AliForwardUtil::GetEtaFromStrip(UShort_t det, Char_t ring,
508 UShort_t sec, UShort_t strip,
509 Double_t zvtx)
510{
511 // Calculate eta from strip with vertex (redundant with
512 // AliESDFMD::Eta but support displaced vertices)
513 //
514 // Slightly more optimized version that uses less branching
515
516 // Get R of the strip
517 Double_t r = GetStripR(ring, strip);
518 Int_t hybrid = sec / 2;
519 Int_t q = (ring == 'I' || ring == 'i') ? 0 : 1;
520
521 const Double_t zs[][2] = { { 320.266, -999999 },
522 { 83.666, 74.966 },
523 { -63.066, -74.966 } };
524 if (det > 3 || zs[det-1][q] == -999999) return -999999;
525
526 Double_t z = zs[det-1][q];
527 if ((hybrid % 2) == 0) z -= .5;
528
529 Double_t theta = TMath::ATan2(r,z-zvtx);
530 Double_t eta = -1*TMath::Log(TMath::Tan(0.5*theta));
531
532 return eta;
533}
534#else
5ca83fee 535//_____________________________________________________________________
536Double_t AliForwardUtil::GetEtaFromStrip(UShort_t det, Char_t ring,
537 UShort_t sec, UShort_t strip,
538 Double_t zvtx)
539{
540 // Calculate eta from strip with vertex (redundant with
541 // AliESDFMD::Eta but support displaced vertices)
6f4a5c0d 542
5ca83fee 543 //Get max R of ring
544 Double_t r = GetStripR(ring, strip);
545 Int_t hybrid = sec / 2;
546 Bool_t inner = (ring == 'I' || ring == 'i');
547 Double_t z = 0;
1f7aa5c7 548
549
6f4a5c0d 550 switch (det) {
5ca83fee 551 case 1: z = 320.266; break;
552 case 2: z = (inner ? 83.666 : 74.966); break;
6f4a5c0d 553 case 3: z = (inner ? -63.066 : -74.966); break;
554 default: return -999999;
555 }
556 if ((hybrid % 2) == 0) z -= .5;
557
558 Double_t theta = TMath::ATan2(r,z-zvtx);
559 Double_t eta = -1*TMath::Log(TMath::Tan(0.5*theta));
560
561 return eta;
562}
1f7aa5c7 563#endif
0bd4b00f 564
5ca83fee 565//_____________________________________________________________________
566Double_t AliForwardUtil::GetPhiFromStrip(Char_t ring, UShort_t strip,
567 Double_t phi,
568 Double_t xvtx, Double_t yvtx)
569{
570 // Calculate eta from strip with vertex (redundant with
571 // AliESDFMD::Eta but support displaced vertices)
572
573 // Unknown x,y -> no change
574 if (yvtx > 999 || xvtx > 999) return phi;
575
576 //Get max R of ring
577 Double_t r = GetStripR(ring, strip);
578 Double_t amp = TMath::Sqrt(xvtx*xvtx+yvtx*yvtx) / r;
579 Double_t pha = (TMath::Abs(yvtx) < 1e-12 ? 0 : TMath::ATan2(xvtx, yvtx));
580 Double_t cha = amp * TMath::Cos(phi+pha);
581 phi += cha;
582 if (phi < 0) phi += TMath::TwoPi();
583 if (phi > TMath::TwoPi()) phi -= TMath::TwoPi();
584 return phi;
585}
c8b1a7db 586//====================================================================
587TAxis*
588AliForwardUtil::MakeFullIpZAxis(Int_t nCenter)
77f97e3f
CHC		 589{
590 TArrayD bins;
591 MakeFullIpZAxis(nCenter, bins);
592 TAxis* a = new TAxis(bins.GetSize()-1,bins.GetArray());
593 return a;
594}
595void
596AliForwardUtil::MakeFullIpZAxis(Int_t nCenter, TArrayD& bins)
c8b1a7db 597{
598 // Custom vertex axis that will include satellite vertices
599 // Satellite vertices are at k*37.5 where k=-10,-9,...,9,10
600 // Nominal vertices are usually in -10 to 10 and we should have
601 // 10 bins in that range. That gives us a total of
602 //
603 // 10+10+10=30 bins
604 //
605 // or 31 bin boundaries
606 if (nCenter % 2 == 1)
607 // Number of central bins is odd - make it even
608 nCenter--;
609 const Double_t mCenter = 20;
610 const Int_t nSat = 10;
611 const Int_t nBins = 2*nSat + nCenter;
612 const Int_t mBin = nBins / 2;
613 Double_t dCenter = 2*mCenter / nCenter;
77f97e3f 614 bins.Set(nBins+1);
c8b1a7db 615 bins[mBin] = 0;
616 for (Int_t i = 1; i <= nCenter/2; i++) {
617 // Assign from the middle out
618 Double_t v = i * dCenter;
619 // Printf("Assigning +/-%7.2f to %3d/%3d", v,mBin-i,mBin+i);
620 bins[mBin-i] = -v;
621 bins[mBin+i] = +v;
622 }
623 for (Int_t i = 1; i <= nSat; i++) {
624 Double_t v = (i+.5) * 37.5;
625 Int_t o = nCenter/2+i;
626 // Printf("Assigning +/-%7.2f to %3d/%3d", v,mBin-o,mBin+o);
627 bins[mBin-o] = -v;
628 bins[mBin+o] = +v;
629 }
c8b1a7db 630}
77f97e3f
CHC		 631void
632AliForwardUtil::MakeLogScale(Int_t nBins,
633 Int_t minOrder,
634 Int_t maxOrder,
635 TArrayD& bins)
636{
637 Double_t dO = Double_t(maxOrder-minOrder) / nBins;
638 bins.Set(nBins+1);
639 for (Int_t i = 0; i <= nBins; i++) bins[i] = TMath::Power(10, i * dO);
640}
641
c8b1a7db 642void
643AliForwardUtil::PrintTask(const TObject& o)
644{
645 Int_t ind = gROOT->GetDirLevel();
646 if (ind > 0)
647 // Print indention
648 std::cout << std::setfill(' ') << std::setw(ind) << " " << std::flush;
649
650 TString t = TString::Format("%s %s", o.GetName(), o.ClassName());
651 const Int_t maxN = 75;
652 std::cout << "--- " << t << " " << std::setfill('-')
653 << std::setw(maxN-ind-5-t.Length()) << "-" << std::endl;
654}
655void
656AliForwardUtil::PrintName(const char* name)
657{
658 Int_t ind = gROOT->GetDirLevel();
659 if (ind > 0)
660 // Print indention
661 std::cout << std::setfill(' ') << std::setw(ind) << " " << std::flush;
662
663 // Now print field name
664 const Int_t maxN = 29;
665 Int_t width = maxN - ind;
666 TString n(name);
667 if (n.Length() > width-1) {
668 // Truncate the string, and put in "..."
669 n.Remove(width-4);
670 n.Append("...");
671 }
672 n.Append(":");
673 std::cout << std::setfill(' ') << std::left << std::setw(width)
674 << n << std::right << std::flush;
675}
676void
677AliForwardUtil::PrintField(const char* name, const char* value, ...)
678{
679 PrintName(name);
680
681 // Now format the field value
682 va_list ap;
683 va_start(ap, value);
684 static char buf[512];
685 vsnprintf(buf, 511, value, ap);
686 buf[511] = '\0';
687 va_end(ap);
688
689 std::cout << buf << std::endl;
690}
0bd4b00f 691
7f759bb7 692//====================================================================
a19faec0 693#if 0 // Moved to separate classes
7f759bb7 694Int_t AliForwardUtil::fgConvolutionSteps = 100;
695Double_t AliForwardUtil::fgConvolutionNSigma = 5;
696namespace {
7984e5f7 697 //
698 // The shift of the most probable value for the ROOT function TMath::Landau
699 //
7f759bb7 700 const Double_t mpshift = -0.22278298;
7984e5f7 701 //
702 // Integration normalisation
703 //
7f759bb7 704 const Double_t invSq2pi = 1. / TMath::Sqrt(2*TMath::Pi());
705
7984e5f7 706 //
707 // Utility function to use in TF1 defintition
708 //
7f759bb7 709 Double_t landauGaus1(Double_t* xp, Double_t* pp)
710 {
711 Double_t x = xp[0];
c389303e 712 Double_t constant = pp[AliForwardUtil::ELossFitter::kC];
713 Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta];
714 Double_t xi = pp[AliForwardUtil::ELossFitter::kXi];
715 Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma];
1174780f 716 Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN];
7f759bb7 717
1174780f 718 return constant * AliForwardUtil::LandauGaus(x, delta, xi, sigma, sigmaN);
7f759bb7 719 }
720
2e658fb9 721 Double_t landauGausComposite(Double_t* xp, Double_t* pp)
722 {
723 Double_t x = xp[0];
724 Double_t cP = pp[AliForwardUtil::ELossFitter::kC];
725 Double_t deltaP = pp[AliForwardUtil::ELossFitter::kDelta];
726 Double_t xiP = pp[AliForwardUtil::ELossFitter::kXi];
727 Double_t sigmaP = pp[AliForwardUtil::ELossFitter::kSigma];
728 Double_t cS = pp[AliForwardUtil::ELossFitter::kSigma+1];
93a63fe1 729 Double_t deltaS = deltaP; // pp[AliForwardUtil::ELossFitter::kSigma+2];
730 Double_t xiS = pp[AliForwardUtil::ELossFitter::kSigma+2/*3*/];
731 Double_t sigmaS = sigmaP; // pp[AliForwardUtil::ELossFitter::kSigma+4];
2e658fb9 732
733 return (cP * AliForwardUtil::LandauGaus(x,deltaP,xiP,sigmaP,0) +
734 cS * AliForwardUtil::LandauGaus(x,deltaS,xiS,sigmaS,0));
735 }
736
7984e5f7 737 //
738 // Utility function to use in TF1 defintition
739 //
7f759bb7 740 Double_t landauGausN(Double_t* xp, Double_t* pp)
741 {
742 Double_t x = xp[0];
c389303e 743 Double_t constant = pp[AliForwardUtil::ELossFitter::kC];
744 Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta];
745 Double_t xi = pp[AliForwardUtil::ELossFitter::kXi];
746 Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma];
1174780f 747 Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN];
c389303e 748 Int_t n = Int_t(pp[AliForwardUtil::ELossFitter::kN]);
749 Double_t* a = &(pp[AliForwardUtil::ELossFitter::kA]);
7f759bb7 750
1174780f 751 return constant * AliForwardUtil::NLandauGaus(x, delta, xi, sigma, sigmaN,
7f759bb7 752 n, a);
753 }
7984e5f7 754 //
755 // Utility function to use in TF1 defintition
756 //
0bd4b00f 757 Double_t landauGausI(Double_t* xp, Double_t* pp)
758 {
759 Double_t x = xp[0];
760 Double_t constant = pp[AliForwardUtil::ELossFitter::kC];
761 Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta];
762 Double_t xi = pp[AliForwardUtil::ELossFitter::kXi];
763 Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma];
1174780f 764 Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN];
0bd4b00f 765 Int_t i = Int_t(pp[AliForwardUtil::ELossFitter::kN]);
766
1174780f 767 return constant * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i);
0bd4b00f 768 }
7f759bb7 769
770
771}
772//____________________________________________________________________
773Double_t
774AliForwardUtil::Landau(Double_t x, Double_t delta, Double_t xi)
775{
7984e5f7 776 //
777 // Calculate the shifted Landau
778 // @f[
779 // f'_{L}(x;\Delta,\xi) = f_L(x;\Delta+0.22278298\xi)
780 // @f]
781 //
782 // where @f$ f_{L}@f$ is the ROOT implementation of the Landau
783 // distribution (known to have @f$ \Delta_{p}=-0.22278298@f$ for
784 // @f$\Delta=0,\xi=1@f$.
785 //
786 // Parameters:
787 // x Where to evaluate @f$ f'_{L}@f$
788 // delta Most probable value
789 // xi The 'width' of the distribution
790 //
791 // Return:
792 // @f$ f'_{L}(x;\Delta,\xi) @f$
793 //
a19faec0 794 Double_t deltaP = delta - xi * mpshift;
795 return TMath::Landau(x, deltaP, xi, true);
7f759bb7 796}
797//____________________________________________________________________
798Double_t
799AliForwardUtil::LandauGaus(Double_t x, Double_t delta, Double_t xi,
1174780f 800 Double_t sigma, Double_t sigmaN)
7f759bb7 801{
7984e5f7 802 //
803 // Calculate the value of a Landau convolved with a Gaussian
804 //
805 // @f[
806 // f(x;\Delta,\xi,\sigma') = \frac{1}{\sigma' \sqrt{2 \pi}}
807 // \int_{-\infty}^{+\infty} d\Delta' f'_{L}(x;\Delta',\xi)
808 // \exp{-\frac{(\Delta-\Delta')^2}{2\sigma'^2}}
809 // @f]
810 //
811 // where @f$ f'_{L}@f$ is the Landau distribution, @f$ \Delta@f$ the
812 // energy loss, @f$ \xi@f$ the width of the Landau, and
813 // @f$ \sigma'^2=\sigma^2-\sigma_n^2 @f$. Here, @f$\sigma@f$ is the
814 // variance of the Gaussian, and @f$\sigma_n@f$ is a parameter modelling
815 // noise in the detector.
816 //
817 // Note that this function uses the constants fgConvolutionSteps and
818 // fgConvolutionNSigma
819 //
820 // References:
821 // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a>
822 // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a>
823 // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a>
824 //
825 // Parameters:
826 // x where to evaluate @f$ f@f$
827 // delta @f$ \Delta@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$
828 // xi @f$ \xi@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$
829 // sigma @f$ \sigma@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$
830 // sigma_n @f$ \sigma_n@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$
831 //
832 // Return:
833 // @f$ f@f$ evaluated at @f$ x@f$.
834 //
a19faec0 835 if (xi <= 0) return 0;
836
837 Double_t deltaP = delta; // - sigma * sigmaShift; // + sigma * mpshift;
1174780f 838 Double_t sigma2 = sigmaN*sigmaN + sigma*sigma;
839 Double_t sigma1 = sigmaN == 0 ? sigma : TMath::Sqrt(sigma2);
7f759bb7 840 Double_t xlow = x - fgConvolutionNSigma * sigma1;
c389303e 841 Double_t xhigh = x + fgConvolutionNSigma * sigma1;
7f759bb7 842 Double_t step = (xhigh - xlow) / fgConvolutionSteps;
843 Double_t sum = 0;
844
845 for (Int_t i = 0; i <= fgConvolutionSteps/2; i++) {
c389303e 846 Double_t x1 = xlow + (i - .5) * step;
847 Double_t x2 = xhigh - (i - .5) * step;
7f759bb7 848
a19faec0 849 //sum += TMath::Landau(x1, deltap, xi, kTRUE) * TMath::Gaus(x, x1, sigma1);
850 //sum += TMath::Landau(x2, deltap, xi, kTRUE) * TMath::Gaus(x, x2, sigma1);
851 sum += Landau(x1, deltaP, xi) * TMath::Gaus(x, x1, sigma1);
852 sum += Landau(x2, deltaP, xi) * TMath::Gaus(x, x2, sigma1);
7f759bb7 853 }
854 return step * sum * invSq2pi / sigma1;
855}
856
a19faec0 857namespace {
858 const Double_t sigmaShift = 0.36390; // TMath::Log(TMath::Sqrt(2.));
859 double deltaSigmaShift(Int_t i, Double_t sigma)
860 {
861 return 0; // - sigma * sigmaShift;
862 }
863 void getIPars(Int_t i, Double_t& delta, Double_t& xi, Double_t& sigma)
864 {
865 Double_t dsig = deltaSigmaShift(i, sigma);
866 if (i == 1) {
867 delta += dsig;
868 return; // { delta = delta + xi*mpshift; return; } // Do nothing
869 }
870
871 delta = i * (delta + xi * TMath::Log(i)) + dsig;
872 xi = i * xi;
873 sigma = TMath::Sqrt(Double_t(i)) * sigma;
874 }
875}
876
877
0bd4b00f 878//____________________________________________________________________
879Double_t
880AliForwardUtil::ILandauGaus(Double_t x, Double_t delta, Double_t xi,
1174780f 881 Double_t sigma, Double_t sigmaN, Int_t i)
0bd4b00f 882{
7984e5f7 883 //
884 // Evaluate
885 // @f[
886 // f_i(x;\Delta,\xi,\sigma') = f(x;\Delta_i,\xi_i,\sigma_i')
887 // @f]
888 // corresponding to @f$ i@f$ particles i.e., with the substitutions
889 // @f{eqnarray*}{
890 // \Delta \rightarrow \Delta_i &=& i(\Delta + \xi\log(i))
891 // \xi \rightarrow \xi_i &=& i \xi
892 // \sigma \rightarrow \sigma_i &=& \sqrt{i}\sigma
893 // \sigma'^2 \rightarrow \sigma_i'^2 &=& \sigma_n^2 + \sigma_i^2
894 // @f}
895 //
896 // Parameters:
897 // x Where to evaluate
898 // delta @f$ \Delta@f$
899 // xi @f$ \xi@f$
900 // sigma @f$ \sigma@f$
901 // sigma_n @f$ \sigma_n@f$
902 // i @f$ i @f$
903 //
904 // Return:
905 // @f$ f_i @f$ evaluated
906 //
a19faec0 907 Double_t deltaI = delta;
908 Double_t xiI = xi;
909 Double_t sigmaI = sigma;
910 getIPars(i, deltaI, xiI, sigmaI);
1174780f 911 if (sigmaI < 1e-10) {
0bd4b00f 912 // Fall back to landau
1174780f 913 return AliForwardUtil::Landau(x, deltaI, xiI);
0bd4b00f 914 }
1174780f 915 return AliForwardUtil::LandauGaus(x, deltaI, xiI, sigmaI, sigmaN);
0bd4b00f 916}
917
918//____________________________________________________________________
919Double_t
920AliForwardUtil::IdLandauGausdPar(Double_t x,
921 UShort_t par, Double_t dPar,
922 Double_t delta, Double_t xi,
1174780f 923 Double_t sigma, Double_t sigmaN,
0bd4b00f 924 Int_t i)
925{
7984e5f7 926 //
927 // Numerically evaluate
928 // @f[
929 // \left.\frac{\partial f_i}{\partial p_i}\right|_{x}
930 // @f]
931 // where @f$ p_i@f$ is the @f$ i^{\mbox{th}}@f$ parameter. The mapping
932 // of the parameters is given by
933 //
934 // - 0: @f$\Delta@f$
935 // - 1: @f$\xi@f$
936 // - 2: @f$\sigma@f$
937 // - 3: @f$\sigma_n@f$
938 //
939 // This is the partial derivative with respect to the parameter of
940 // the response function corresponding to @f$ i@f$ particles i.e.,
941 // with the substitutions
942 // @f[
943 // \Delta \rightarrow \Delta_i = i(\Delta + \xi\log(i))
944 // \xi \rightarrow \xi_i = i \xi
945 // \sigma \rightarrow \sigma_i = \sqrt{i}\sigma
946 // \sigma'^2 \rightarrow \sigma_i'^2 = \sigma_n^2 + \sigma_i^2
947 // @f]
948 //
949 // Parameters:
950 // x Where to evaluate
951 // ipar Parameter number
952 // dp @f$ \epsilon\delta p_i@f$ for some value of @f$\epsilon@f$
953 // delta @f$ \Delta@f$
954 // xi @f$ \xi@f$
955 // sigma @f$ \sigma@f$
956 // sigma_n @f$ \sigma_n@f$
957 // i @f$ i@f$
958 //
959 // Return:
960 // @f$ f_i@f$ evaluated
961 //
0bd4b00f 962 if (dPar == 0) return 0;
963 Double_t dp = dPar;
964 Double_t d2 = dPar / 2;
1174780f 965 Double_t deltaI = i * (delta + xi * TMath::Log(i));
966 Double_t xiI = i * xi;
0bd4b00f 967 Double_t si = TMath::Sqrt(Double_t(i));
1174780f 968 Double_t sigmaI = si*sigma;
0bd4b00f 969 Double_t y1 = 0;
970 Double_t y2 = 0;
971 Double_t y3 = 0;
972 Double_t y4 = 0;
973 switch (par) {
974 case 0:
1174780f 975 y1 = ILandauGaus(x, deltaI+i*dp, xiI, sigmaI, sigmaN, i);
976 y2 = ILandauGaus(x, deltaI+i*d2, xiI, sigmaI, sigmaN, i);
977 y3 = ILandauGaus(x, deltaI-i*d2, xiI, sigmaI, sigmaN, i);
978 y4 = ILandauGaus(x, deltaI-i*dp, xiI, sigmaI, sigmaN, i);
0bd4b00f 979 break;
980 case 1:
1174780f 981 y1 = ILandauGaus(x, deltaI, xiI+i*dp, sigmaI, sigmaN, i);
982 y2 = ILandauGaus(x, deltaI, xiI+i*d2, sigmaI, sigmaN, i);
983 y3 = ILandauGaus(x, deltaI, xiI-i*d2, sigmaI, sigmaN, i);
984 y4 = ILandauGaus(x, deltaI, xiI-i*dp, sigmaI, sigmaN, i);
0bd4b00f 985 break;
986 case 2:
1174780f 987 y1 = ILandauGaus(x, deltaI, xiI, sigmaI+si*dp, sigmaN, i);
988 y2 = ILandauGaus(x, deltaI, xiI, sigmaI+si*d2, sigmaN, i);
989 y3 = ILandauGaus(x, deltaI, xiI, sigmaI-si*d2, sigmaN, i);
990 y4 = ILandauGaus(x, deltaI, xiI, sigmaI-si*dp, sigmaN, i);
0bd4b00f 991 break;
992 case 3:
1174780f 993 y1 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+dp, i);
994 y2 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+d2, i);
995 y3 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-d2, i);
996 y4 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-dp, i);
0bd4b00f 997 break;
998 default:
999 return 0;
1000 }
1001
1002 Double_t d0 = y1 - y4;
1003 Double_t d1 = 2 * (y2 - y3);
1004
1005 Double_t g = 1/(2*dp) * (4*d1 - d0) / 3;
1006
1007 return g;
1008}
1009
7f759bb7 1010//____________________________________________________________________
1011Double_t
1012AliForwardUtil::NLandauGaus(Double_t x, Double_t delta, Double_t xi,
1174780f 1013 Double_t sigma, Double_t sigmaN, Int_t n,
fb3430ac 1014 const Double_t* a)
7f759bb7 1015{
7984e5f7 1016 //
1017 // Evaluate
1018 // @f[
1019 // f_N(x;\Delta,\xi,\sigma') = \sum_{i=1}^N a_i f_i(x;\Delta,\xi,\sigma'a)
1020 // @f]
1021 //
1022 // where @f$ f(x;\Delta,\xi,\sigma')@f$ is the convolution of a
1023 // Landau with a Gaussian (see LandauGaus). Note that
1024 // @f$ a_1 = 1@f$, @f$\Delta_i = i(\Delta_1 + \xi\log(i))@f$,
1025 // @f$\xi_i=i\xi_1@f$, and @f$\sigma_i'^2 = \sigma_n^2 + i\sigma_1^2@f$.
1026 //
1027 // References:
1028 // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a>
1029 // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a>
1030 // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a>
1031 //
1032 // Parameters:
1033 // x Where to evaluate @f$ f_N@f$
1034 // delta @f$ \Delta_1@f$
1035 // xi @f$ \xi_1@f$
1036 // sigma @f$ \sigma_1@f$
1037 // sigma_n @f$ \sigma_n@f$
1038 // n @f$ N@f$ in the sum above.
1039 // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for
1040 // @f$ i > 1@f$
1041 //
1042 // Return:
1043 // @f$ f_N(x;\Delta,\xi,\sigma')@f$
1044 //
1174780f 1045 Double_t result = ILandauGaus(x, delta, xi, sigma, sigmaN, 1);
0bd4b00f 1046 for (Int_t i = 2; i <= n; i++)
1174780f 1047 result += a[i-2] * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i);
7f759bb7 1048 return result;
1049}
0bd4b00f 1050namespace {
1051 const Int_t kColors[] = { kRed+1,
1052 kPink+3,
1053 kMagenta+2,
1054 kViolet+2,
1055 kBlue+1,
1056 kAzure+3,
1057 kCyan+1,
1058 kTeal+2,
1059 kGreen+2,
1060 kSpring+3,
1061 kYellow+2,
1062 kOrange+2 };
1063}
1064
1065//____________________________________________________________________
1066TF1*
1067AliForwardUtil::MakeNLandauGaus(Double_t c,
1068 Double_t delta, Double_t xi,
1174780f 1069 Double_t sigma, Double_t sigmaN, Int_t n,
fb3430ac 1070 const Double_t* a,
0bd4b00f 1071 Double_t xmin, Double_t xmax)
1072{
7984e5f7 1073 //
1074 // Generate a TF1 object of @f$ f_N@f$
1075 //
1076 // Parameters:
1077 // c Constant
1078 // delta @f$ \Delta@f$
1079 // xi @f$ \xi_1@f$
1080 // sigma @f$ \sigma_1@f$
1081 // sigma_n @f$ \sigma_n@f$
1082 // n @f$ N@f$ - how many particles to sum to
1083 // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for
1084 // @f$ i > 1@f$
1085 // xmin Least value of range
1086 // xmax Largest value of range
1087 //
1088 // Return:
1089 // Newly allocated TF1 object
1090 //
0bd4b00f 1091 Int_t npar = AliForwardUtil::ELossFitter::kN+n;
1092 TF1* landaun = new TF1(Form("nlandau%d", n), &landauGausN,xmin,xmax,npar);
1093 // landaun->SetLineStyle(((n-2) % 10)+2); // start at dashed
1094 landaun->SetLineColor(kColors[((n-1) % 12)]); // start at red
1095 landaun->SetLineWidth(2);
1096 landaun->SetNpx(500);
1097 landaun->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "N");
1098
1099 // Set the initial parameters from the seed fit
1100 landaun->SetParameter(AliForwardUtil::ELossFitter::kC, c);
1101 landaun->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta);
1102 landaun->SetParameter(AliForwardUtil::ELossFitter::kXi, xi);
1103 landaun->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma);
1174780f 1104 landaun->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN);
0bd4b00f 1105 landaun->FixParameter(AliForwardUtil::ELossFitter::kN, n);
1106
1107 // Set the range and name of the scale parameters
1108 for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit
1109 landaun->SetParameter(AliForwardUtil::ELossFitter::kA+i-2, a[i-2]);
1110 landaun->SetParName(AliForwardUtil::ELossFitter::kA+i-2, Form("a_{%d}", i));
1111 }
1112 return landaun;
1113}
1114//____________________________________________________________________
1115TF1*
1116AliForwardUtil::MakeILandauGaus(Double_t c,
1117 Double_t delta, Double_t xi,
1174780f 1118 Double_t sigma, Double_t sigmaN, Int_t i,
0bd4b00f 1119 Double_t xmin, Double_t xmax)
1120{
7984e5f7 1121 //
1122 // Generate a TF1 object of @f$ f_I@f$
1123 //
1124 // Parameters:
1125 // c Constant
1126 // delta @f$ \Delta@f$
1127 // xi @f$ \xi_1@f$
1128 // sigma @f$ \sigma_1@f$
1129 // sigma_n @f$ \sigma_n@f$
1130 // i @f$ i@f$ - the number of particles
1131 // xmin Least value of range
1132 // xmax Largest value of range
1133 //
1134 // Return:
1135 // Newly allocated TF1 object
1136 //
0bd4b00f 1137 Int_t npar = AliForwardUtil::ELossFitter::kN+1;
1138 TF1* landaui = new TF1(Form("ilandau%d", i), &landauGausI,xmin,xmax,npar);
1139 // landaui->SetLineStyle(((i-2) % 10)+2); // start at dashed
1140 landaui->SetLineColor(kColors[((i-1) % 12)]); // start at red
1141 landaui->SetLineWidth(1);
1142 landaui->SetNpx(500);
1143 landaui->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "i");
1144
1145 // Set the initial parameters from the seed fit
1146 landaui->SetParameter(AliForwardUtil::ELossFitter::kC, c);
1147 landaui->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta);
1148 landaui->SetParameter(AliForwardUtil::ELossFitter::kXi, xi);
1149 landaui->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma);
1174780f 1150 landaui->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN);
0bd4b00f 1151 landaui->FixParameter(AliForwardUtil::ELossFitter::kN, i);
1152
1153 return landaui;
1154}
7f759bb7 1155
1156//====================================================================
1157AliForwardUtil::ELossFitter::ELossFitter(Double_t lowCut,
1158 Double_t maxRange,
1159 UShort_t minusBins)
1160 : fLowCut(lowCut), fMaxRange(maxRange), fMinusBins(minusBins),
81775aba 1161 fFitResults(0), fFunctions(0), fDebug(false)
7f759bb7 1162{
7984e5f7 1163 //
1164 // Constructor
1165 //
1166 // Parameters:
1167 // lowCut Lower cut of spectrum - data below this cuts is ignored
1168 // maxRange Maximum range to fit to
1169 // minusBins The number of bins below maximum to use
1170 //
7f759bb7 1171 fFitResults.SetOwner();
1172 fFunctions.SetOwner();
1173}
1174//____________________________________________________________________
1175AliForwardUtil::ELossFitter::~ELossFitter()
1176{
7984e5f7 1177 //
1178 // Destructor
1179 //
1180 //
7f759bb7 1181 fFitResults.Delete();
1182 fFunctions.Delete();
1183}
1184//____________________________________________________________________
1185void
1186AliForwardUtil::ELossFitter::Clear()
1187{
7984e5f7 1188 //
1189 // Clear internal arrays
1190 //
1191 //
7f759bb7 1192 fFitResults.Clear();
1193 fFunctions.Clear();
1194}
a19faec0 1195namespace {
1196 void setParLimit(TF1* f, Int_t iPar, Bool_t debug,
1197 Double_t test, Double_t low, Double_t high)
1198 {
1199 if (test >= low && test <= high) {
1200 if (debug)
1201 printf("Fit: Set par limits on %s: %f, %f\n",
1202 f->GetParName(iPar), low, high);
1203 f->SetParLimits(iPar, low, high);
1204 }
1205 }
1206}
1207
7f759bb7 1208//____________________________________________________________________
1209TF1*
1210AliForwardUtil::ELossFitter::Fit1Particle(TH1* dist, Double_t sigman)
1211{
7984e5f7 1212 //
1213 // Fit a 1-particle signal to the passed energy loss distribution
1214 //
1215 // Note that this function clears the internal arrays first
1216 //
1217 // Parameters:
1218 // dist Data to fit the function to
1219 // sigman If larger than zero, the initial guess of the
1220 // detector induced noise. If zero or less, then this
1221 // parameter is ignored in the fit (fixed at 0)
1222 //
1223 // Return:
1224 // The function fitted to the data
1225 //
1226
7f759bb7 1227 // Clear the cache
1228 Clear();
1229
1230 // Find the fit range
8449e3e0 1231 // Find the fit range
1232 Int_t cutBin = TMath::Max(dist->GetXaxis()->FindBin(fLowCut),3);
1233 Int_t maxBin = TMath::Min(dist->GetXaxis()->FindBin(fMaxRange),
1234 dist->GetNbinsX());
1235 dist->GetXaxis()->SetRange(cutBin, maxBin);
1236 // dist->GetXaxis()->SetRangeUser(fLowCut, fMaxRange);
7f759bb7 1237
7f759bb7 1238 // Get the bin with maximum
2e658fb9 1239 Int_t peakBin = dist->GetMaximumBin();
1240 Double_t peakE = dist->GetBinLowEdge(peakBin);
a19faec0 1241 Double_t rmsE = dist->GetRMS();
7f759bb7 1242
1243 // Get the low edge
8449e3e0 1244 // dist->GetXaxis()->SetRangeUser(fLowCut, peakE);
2e658fb9 1245 Int_t minBin = peakBin - fMinusBins; // dist->GetMinimumBin();
7f759bb7 1246 Double_t minE = TMath::Max(dist->GetBinCenter(minBin),fLowCut);
2e658fb9 1247 Double_t maxE = dist->GetBinCenter(peakBin+2*fMinusBins);
7f759bb7 1248
2e658fb9 1249 Int_t minEb = dist->GetXaxis()->FindBin(minE);
1250 Int_t maxEb = dist->GetXaxis()->FindBin(maxE);
1251 Double_t intg = dist->Integral(minEb, maxEb);
1252 if (intg <= 0) {
1253 ::Warning("Fit1Particle",
1254 "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0",
1255 dist->GetName(), minE, maxE, minEb, maxEb, intg);
1256 return 0;
1257 }
1258
7f759bb7 1259 // Restore the range
8449e3e0 1260 dist->GetXaxis()->SetRange(1, maxBin);
7f759bb7 1261
1262 // Define the function to fit
2e658fb9 1263 TF1* landau1 = new TF1("landau1", landauGaus1, minE,maxE,kSigmaN+1);
7f759bb7 1264
1265 // Set initial guesses, parameter names, and limits
a19faec0 1266 landau1->SetParameters(intg,peakE,peakE/10,peakE/5,sigman);
7f759bb7 1267 landau1->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}");
c389303e 1268 landau1->SetNpx(500);
a19faec0 1269 setParLimit(landau1, kDelta, fDebug, peakE, minE, fMaxRange);
1270 setParLimit(landau1, kXi, fDebug, peakE, 0, rmsE); // 0.1
1271 setParLimit(landau1, kSigma, fDebug, peakE/5, 1e-5, rmsE); // 0.1
c389303e 1272 if (sigman <= 0) landau1->FixParameter(kSigmaN, 0);
a19faec0 1273 else
1274 setParLimit(landau1, kSigmaN, fDebug, peakE, 0, rmsE);
1275
7f759bb7 1276
a19faec0 1277 TString opts(Form("%s%s", FIT_OPTIONS, fDebug ? "" : "Q"));
7f759bb7 1278 // Do the fit, getting the result object
81775aba 1279 if (fDebug)
1280 ::Info("Fit1Particle", "Fitting in the range %f,%f", minE, maxE);
a19faec0 1281 TFitResultPtr r = dist->Fit(landau1, opts, "", minE, maxE);
93a63fe1 1282 if (!r.Get()) {
1283 ::Warning("Fit1Particle",
1284 "No fit returned when processing %s in the range [%f,%f] "
1285 "options %s", dist->GetName(), minE, maxE, FIT_OPTIONS);
1286 return 0;
1287 }
2e658fb9 1288 // landau1->SetRange(minE, fMaxRange);
7f759bb7 1289 fFitResults.AddAtAndExpand(new TFitResult(*r), 0);
1290 fFunctions.AddAtAndExpand(landau1, 0);
1291
1292 return landau1;
1293}
1294//____________________________________________________________________
1295TF1*
1296AliForwardUtil::ELossFitter::FitNParticle(TH1* dist, UShort_t n,
1297 Double_t sigman)
1298{
7984e5f7 1299 //
1300 // Fit a N-particle signal to the passed energy loss distribution
1301 //
1302 // If there's no 1-particle fit present, it does that first
1303 //
1304 // Parameters:
1305 // dist Data to fit the function to
1306 // n Number of particle signals to fit
1307 // sigman If larger than zero, the initial guess of the
1308 // detector induced noise. If zero or less, then this
1309 // parameter is ignored in the fit (fixed at 0)
1310 //
1311 // Return:
1312 // The function fitted to the data
1313 //
1314
7f759bb7 1315 // Get the seed fit result
1316 TFitResult* r = static_cast<TFitResult*>(fFitResults.At(0));
1317 TF1* f = static_cast<TF1*>(fFunctions.At(0));
1318 if (!r || !f) {
1319 f = Fit1Particle(dist, sigman);
1320 r = static_cast<TFitResult*>(fFitResults.At(0));
1321 if (!r || !f) {
1322 ::Warning("FitNLandau", "No first shot at landau fit");
1323 return 0;
1324 }
1325 }
1326
1327 // Get some parameters from seed fit
c389303e 1328 Double_t delta1 = r->Parameter(kDelta);
1329 Double_t xi1 = r->Parameter(kXi);
7f759bb7 1330 Double_t maxEi = n * (delta1 + xi1 * TMath::Log(n)) + 2 * n * xi1;
1331 Double_t minE = f->GetXmin();
1332
2e658fb9 1333 Int_t minEb = dist->GetXaxis()->FindBin(minE);
1334 Int_t maxEb = dist->GetXaxis()->FindBin(maxEi);
a19faec0 1335 Double_t rmsE = dist->GetRMS();
2e658fb9 1336 Double_t intg = dist->Integral(minEb, maxEb);
1337 if (intg <= 0) {
1338 ::Warning("FitNParticle",
1339 "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0",
1340 dist->GetName(), minE, maxEi, minEb, maxEb, intg);
1341 return 0;
1342 }
1343
0bd4b00f 1344 // Array of weights
1345 TArrayD a(n-1);
1346 for (UShort_t i = 2; i <= n; i++)
1347 a.fArray[i-2] = (n == 2 ? 0.05 : 0.000001);
7f759bb7 1348 // Make the fit function
2e658fb9 1349 TF1* landaun = MakeNLandauGaus(r->Parameter(kC),
1350 r->Parameter(kDelta),
1351 r->Parameter(kXi),
1352 r->Parameter(kSigma),
1353 r->Parameter(kSigmaN),
1354 n, a.fArray, minE, maxEi);
a19faec0 1355 setParLimit(landaun, kDelta, fDebug, r->Parameter(kDelta), minE, fMaxRange);
1356 setParLimit(landaun, kXi, fDebug, r->Parameter(kXi), 0, rmsE); // 0.1
1357 setParLimit(landaun, kSigma, fDebug, r->Parameter(kSigma), 1e-5, rmsE); // 0.1
c389303e 1358 if (sigman <= 0) landaun->FixParameter(kSigmaN, 0);
a19faec0 1359 else
1360 setParLimit(landaun, kSigmaN, fDebug, r->Parameter(kSigmaN), 0, rmsE);
7f759bb7 1361
1362 // Set the range and name of the scale parameters
1363 for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit
a19faec0 1364 setParLimit(landaun, kA+i-2, fDebug, a[i-2], 0, 1);
7f759bb7 1365 }
1366
1367 // Do the fit
a19faec0 1368 TString opts(Form("%s%s", FIT_OPTIONS, fDebug ? "" : "Q"));
81775aba 1369 if (fDebug)
1370 ::Info("FitNParticle", "Fitting in the range %f,%f (%d)", minE, maxEi, n);
a19faec0 1371 TFitResultPtr tr = dist->Fit(landaun, opts, "", minE, maxEi);
7f759bb7 1372
2e658fb9 1373 // landaun->SetRange(minE, fMaxRange);
7f759bb7 1374 fFitResults.AddAtAndExpand(new TFitResult(*tr), n-1);
1375 fFunctions.AddAtAndExpand(landaun, n-1);
1376
1377 return landaun;
1378}
2e658fb9 1379//____________________________________________________________________
1380TF1*
1381AliForwardUtil::ELossFitter::FitComposite(TH1* dist, Double_t sigman)
1382{
1383 //
1384 // Fit a composite particle signal to the passed energy loss
a19faec0 1385 // distribution //
2e658fb9 1386 // Parameters:
1387 // dist Data to fit the function to
1388 // sigman If larger than zero, the initial guess of the
1389 // detector induced noise. If zero or less, then this
1390 // parameter is ignored in the fit (fixed at 0)
1391 //
1392 // Return:
1393 // The function fitted to the data
1394 //
1395
1396 // Find the fit range
8449e3e0 1397 Int_t cutBin = TMath::Max(dist->GetXaxis()->FindBin(fLowCut),3);
1398 Int_t maxBin = TMath::Min(dist->GetXaxis()->FindBin(fMaxRange),
1399 dist->GetNbinsX());
1400 dist->GetXaxis()->SetRange(cutBin, maxBin);
2e658fb9 1401
1402 // Get the bin with maximum
1403 Int_t peakBin = dist->GetMaximumBin();
1404 Double_t peakE = dist->GetBinLowEdge(peakBin);
1405
1406 // Get the low edge
8449e3e0 1407 // dist->GetXaxis()->SetRangeUser(fLowCut, peakE);
2e658fb9 1408 Int_t minBin = peakBin - fMinusBins; // dist->GetMinimumBin();
1409 Double_t minE = TMath::Max(dist->GetBinCenter(minBin),fLowCut);
1410 Double_t maxE = dist->GetBinCenter(peakBin+2*fMinusBins);
1411
1412 // Get the range in bins and the integral of that range
1413 Int_t minEb = dist->GetXaxis()->FindBin(minE);
1414 Int_t maxEb = dist->GetXaxis()->FindBin(maxE);
1415 Double_t intg = dist->Integral(minEb, maxEb);
1416 if (intg <= 0) {
1417 ::Warning("Fit1Particle",
1418 "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0",
1419 dist->GetName(), minE, maxE, minEb, maxEb, intg);
1420 return 0;
1421 }
1422
1423 // Restore the range
8449e3e0 1424 dist->GetXaxis()->SetRange(1, maxBin);
2e658fb9 1425
1426 // Define the function to fit
1427 TF1* seed = new TF1("landauSeed", landauGaus1, minE,maxE,kSigmaN+1);
1428
1429 // Set initial guesses, parameter names, and limits
1430 seed->SetParameters(1,peakE,peakE/10,peakE/5,sigman);
1431 seed->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}");
1432 seed->SetNpx(500);
1433 seed->SetParLimits(kDelta, minE, fMaxRange);
8449e3e0 1434 seed->SetParLimits(kXi, 0.00, 0.1); // Was fMaxRange - too wide
1435 seed->SetParLimits(kSigma, 1e-5, 0.1); // Was fMaxRange - too wide
2e658fb9 1436 if (sigman <= 0) seed->FixParameter(kSigmaN, 0);
1437 else seed->SetParLimits(kSigmaN, 0, fMaxRange);
1438
1439 // Do the fit, getting the result object
81775aba 1440 if (fDebug)
1441 ::Info("FitComposite", "Fitting seed in the range %f,%f", minE, maxE);
e65b8b56 1442 /* TFitResultPtr r = */ dist->Fit(seed, FIT_OPTIONS, "", minE, maxE);
2e658fb9 1443
1444 maxE = dist->GetXaxis()->GetXmax();
93a63fe1 1445#if 1
1446 TF1* comp = new TF1("composite", landauGausComposite,
1447 minE, maxE, kSigma+1+2);
1448 comp->SetParNames("C", "#Delta_{p}", "#xi", "#sigma",
1449 "C#prime", "#xi#prime");
1450 comp->SetParameters(0.8 * seed->GetParameter(kC), // 0 Primary weight
1451 seed->GetParameter(kDelta), // 1 Primary Delta
1452 seed->GetParameter(kDelta)/10, // 2 primary Xi
1453 seed->GetParameter(kDelta)/5, // 3 primary sigma
1454 1.20 * seed->GetParameter(kC), // 5 Secondary weight
1455 seed->GetParameter(kXi)); // 7 secondary Xi
1456 // comp->SetParLimits(kC, minE, fMaxRange); // C
1457 comp->SetParLimits(kDelta, minE, fMaxRange); // Delta
1458 comp->SetParLimits(kXi, 0.00, fMaxRange); // Xi
1459 comp->SetParLimits(kSigma, 1e-5, fMaxRange); // Sigma
1460 // comp->SetParLimits(kSigma+1, minE, fMaxRange); // C
1461 comp->SetParLimits(kSigma+2, 0.00, fMaxRange); // Xi'
1462#else
2e658fb9 1463 TF1* comp = new TF1("composite", landauGausComposite,
1464 minE, maxE, kSigma+1+4);
1465 comp->SetParNames("C", "#Delta_{p}", "#xi", "#sigma",
1466 "C#prime", "#Delta_{p}#prime", "#xi#prime", "#sigma#prim");
1467 comp->SetParameters(0.8 * seed->GetParameter(kC), // 0 Primary weight
1468 seed->GetParameter(kDelta), // 1 Primary Delta
1469 seed->GetParameter(kDelta)/10, // 2 primary Xi
1470 seed->GetParameter(kDelta)/5, // 3 primary sigma
1471 1.20 * seed->GetParameter(kC), // 5 Secondary weight
1472 seed->GetParameter(kDelta), // 6 secondary Delta
1473 seed->GetParameter(kXi), // 7 secondary Xi
1474 seed->GetParameter(kSigma)); // 8 secondary sigma
2e658fb9 1475 // comp->SetParLimits(kC, minE, fMaxRange); // C
1476 comp->SetParLimits(kDelta, minE, fMaxRange); // Delta
1477 comp->SetParLimits(kXi, 0.00, fMaxRange); // Xi
1478 comp->SetParLimits(kSigma, 1e-5, fMaxRange); // Sigma
1479 // comp->SetParLimits(kSigma+1, minE, fMaxRange); // C
1480 comp->SetParLimits(kSigma+2, minE/10, fMaxRange); // Delta
1481 comp->SetParLimits(kSigma+3, 0.00, fMaxRange); // Xi
1482 comp->SetParLimits(kSigma+4, 1e-6, fMaxRange); // Sigma
93a63fe1 1483#endif
2e658fb9 1484 comp->SetLineColor(kRed+1);
1485 comp->SetLineWidth(3);
1486
1487 // Do the fit, getting the result object
a19faec0 1488 TString opts(Form("%s%s", FIT_OPTIONS, fDebug ? "" : "Q"));
81775aba 1489 if (fDebug)
1490 ::Info("FitComposite", "Fitting composite in the range %f,%f", minE, maxE);
a19faec0 1491 /* TFitResultPtr r = */ dist->Fit(comp, opts, "", minE, maxE);
2e658fb9 1492
1493#if 0
1494 TF1* part1 = static_cast<TF1*>(seed->Clone("part1"));
1495 part1->SetLineColor(kGreen+1);
1496 part1->SetLineWidth(4);
1497 part1->SetRange(minE, maxE);
1498 part1->SetParameters(comp->GetParameter(0), // C
1499 comp->GetParameter(1), // Delta
1500 comp->GetParameter(2), // Xi
1501 comp->GetParameter(3), // sigma
1502 0);
1503 part1->Save(minE,maxE,0,0,0,0);
1504 dist->GetListOfFunctions()->Add(part1);
1505
1506 TF1* part2 = static_cast<TF1*>(seed->Clone("part2"));
1507 part2->SetLineColor(kBlue+1);
1508 part2->SetLineWidth(4);
1509 part2->SetRange(minE, maxE);
1510 part2->SetParameters(comp->GetParameter(4), // C
1511 comp->GetParameter(5), // Delta
1512 comp->GetParameter(6), // Xi
1513 comp->GetParameter(7), // sigma
1514 0);
1515 part2->Save(minE,maxE,0,0,0,0);
1516 dist->GetListOfFunctions()->Add(part2);
1517#endif
1518 return comp;
1519}
a19faec0 1520#endif
7e4038b5 1521
1522//====================================================================
1523AliForwardUtil::Histos::~Histos()
1524{
7984e5f7 1525 //
1526 // Destructor
1527 //
b7ab8a2c 1528}
1529
1530//____________________________________________________________________
1531void
1532AliForwardUtil::Histos::Delete(Option_t* opt)
1533{
7e4038b5 1534 if (fFMD1i) delete fFMD1i;
1535 if (fFMD2i) delete fFMD2i;
1536 if (fFMD2o) delete fFMD2o;
1537 if (fFMD3i) delete fFMD3i;
1538 if (fFMD3o) delete fFMD3o;
b7ab8a2c 1539 fFMD1i = 0;
1540 fFMD2i = 0;
1541 fFMD2o = 0;
1542 fFMD3i = 0;
1543 fFMD3o = 0;
1544 TObject::Delete(opt);
7e4038b5 1545}
1546
1547//____________________________________________________________________
1548TH2D*
8449e3e0 1549AliForwardUtil::Histos::Make(UShort_t d, Char_t r, const TAxis& etaAxis)
7e4038b5 1550{
7984e5f7 1551 //
1552 // Make a histogram
1553 //
1554 // Parameters:
1555 // d Detector
1556 // r Ring
1557 // etaAxis Eta axis to use
1558 //
1559 // Return:
1560 // Newly allocated histogram
1561 //
7e4038b5 1562 Int_t ns = (r == 'I' || r == 'i') ? 20 : 40;
8449e3e0 1563 TH2D* hist = 0;
1564 if (etaAxis.GetXbins() && etaAxis.GetXbins()->GetArray())
1565 hist = new TH2D(Form("FMD%d%c_cache", d, r),
1566 Form("FMD%d%c cache", d, r),
1567 etaAxis.GetNbins(), etaAxis.GetXbins()->GetArray(),
1568 ns, 0, TMath::TwoPi());
1569 else
1570 hist = new TH2D(Form("FMD%d%c_cache", d, r),
1571 Form("FMD%d%c cache", d, r),
1572 etaAxis.GetNbins(), etaAxis.GetXmin(),
1573 etaAxis.GetXmax(), ns, 0, TMath::TwoPi());
7e4038b5 1574 hist->SetXTitle("#eta");
1575 hist->SetYTitle("#phi [radians]");
1576 hist->SetZTitle("d^{2}N_{ch}/d#etad#phi");
1577 hist->Sumw2();
1578 hist->SetDirectory(0);
1579
1580 return hist;
1581}
8449e3e0 1582//____________________________________________________________________
1583void
1584AliForwardUtil::Histos::RebinEta(TH2D* hist, const TAxis& etaAxis)
1585{
1586 TAxis* xAxis = hist->GetXaxis();
1587 if (etaAxis.GetXbins() && etaAxis.GetXbins()->GetArray())
1588 xAxis->Set(etaAxis.GetNbins(), etaAxis.GetXbins()->GetArray());
1589 else
1590 xAxis->Set(etaAxis.GetNbins(), etaAxis.GetXmin(), etaAxis.GetXmax());
1591 hist->Rebuild();
1592}
1593
1594
7e4038b5 1595//____________________________________________________________________
1596void
1597AliForwardUtil::Histos::Init(const TAxis& etaAxis)
1598{
7984e5f7 1599 //
1600 // Initialize the object
1601 //
1602 // Parameters:
1603 // etaAxis Eta axis to use
1604 //
7e4038b5 1605 fFMD1i = Make(1, 'I', etaAxis);
1606 fFMD2i = Make(2, 'I', etaAxis);
1607 fFMD2o = Make(2, 'O', etaAxis);
1608 fFMD3i = Make(3, 'I', etaAxis);
1609 fFMD3o = Make(3, 'O', etaAxis);
1610}
8449e3e0 1611//____________________________________________________________________
1612void
1613AliForwardUtil::Histos::ReInit(const TAxis& etaAxis)
1614{
1615 //
1616 // Initialize the object
1617 //
1618 // Parameters:
1619 // etaAxis Eta axis to use
1620 //
93a63fe1 1621 if (!fFMD1i) fFMD1i = Make(1, 'i', etaAxis); else RebinEta(fFMD1i, etaAxis);
1622 if (!fFMD2i) fFMD2i = Make(2, 'i', etaAxis); else RebinEta(fFMD2i, etaAxis);
1623 if (!fFMD2o) fFMD2o = Make(2, 'o', etaAxis); else RebinEta(fFMD2o, etaAxis);
1624 if (!fFMD3i) fFMD3i = Make(3, 'i', etaAxis); else RebinEta(fFMD3i, etaAxis);
1625 if (!fFMD3o) fFMD3o = Make(3, 'o', etaAxis); else RebinEta(fFMD3o, etaAxis);
8449e3e0 1626}
1627
7e4038b5 1628//____________________________________________________________________
1629void
1630AliForwardUtil::Histos::Clear(Option_t* option)
1631{
7984e5f7 1632 //
1633 // Clear data
1634 //
1635 // Parameters:
1636 // option Not used
1637 //
77f97e3f
CHC		 1638 if (fFMD1i) { fFMD1i->Reset(option); fFMD1i->ResetBit(kSkipRing); }
1639 if (fFMD2i) { fFMD2i->Reset(option); fFMD2i->ResetBit(kSkipRing); }
1640 if (fFMD2o) { fFMD2o->Reset(option); fFMD2o->ResetBit(kSkipRing); }
1641 if (fFMD3i) { fFMD3i->Reset(option); fFMD3i->ResetBit(kSkipRing); }
1642 if (fFMD3o) { fFMD3o->Reset(option); fFMD3o->ResetBit(kSkipRing); }
7e4038b5 1643}
1644
1645//____________________________________________________________________
1646TH2D*
1647AliForwardUtil::Histos::Get(UShort_t d, Char_t r) const
1648{
7984e5f7 1649 //
1650 // Get the histogram for a particular detector,ring
1651 //
1652 // Parameters:
1653 // d Detector
1654 // r Ring
1655 //
1656 // Return:
1657 // Histogram for detector,ring or nul
1658 //
7e4038b5 1659 switch (d) {
1660 case 1: return fFMD1i;
1661 case 2: return (r == 'I' || r == 'i' ? fFMD2i : fFMD2o);
1662 case 3: return (r == 'I' || r == 'i' ? fFMD3i : fFMD3o);
1663 }
1664 return 0;
1665}
9d99b0dd 1666//====================================================================
1667TList*
1668AliForwardUtil::RingHistos::DefineOutputList(TList* d) const
1669{
7984e5f7 1670 //
1671 // Define the outout list in @a d
1672 //
1673 // Parameters:
1674 // d Where to put the output list
1675 //
1676 // Return:
1677 // Newly allocated TList object or null
1678 //
9d99b0dd 1679 if (!d) return 0;
1680 TList* list = new TList;
5bb5d1f6 1681 list->SetOwner();
9d99b0dd 1682 list->SetName(fName.Data());
1683 d->Add(list);
1684 return list;
1685}
1686//____________________________________________________________________
1687TList*
fb3430ac 1688AliForwardUtil::RingHistos::GetOutputList(const TList* d) const
9d99b0dd 1689{
7984e5f7 1690 //
1691 // Get our output list from the container @a d
1692 //
1693 // Parameters:
1694 // d where to get the output list from
1695 //
1696 // Return:
1697 // The found TList or null
1698 //
9d99b0dd 1699 if (!d) return 0;
1700 TList* list = static_cast<TList*>(d->FindObject(fName.Data()));
1701 return list;
1702}
1703
1704//____________________________________________________________________
1705TH1*
fb3430ac 1706AliForwardUtil::RingHistos::GetOutputHist(const TList* d, const char* name) const
9d99b0dd 1707{
7984e5f7 1708 //
1709 // Find a specific histogram in the source list @a d
1710 //
1711 // Parameters:
1712 // d (top)-container
1713 // name Name of histogram
1714 //
1715 // Return:
1716 // Found histogram or null
1717 //
9d99b0dd 1718 return static_cast<TH1*>(d->FindObject(name));
1719}
1720
f53fb4f6 1721//====================================================================
1722AliForwardUtil::DebugGuard::DebugGuard(Int_t lvl, Int_t msgLvl,
1723 const char* format, ...)
1724 : fMsg("")
1725{
1726 if (lvl < msgLvl) return;
1727 va_list ap;
1728 va_start(ap, format);
81a9a914 1729 Format(fMsg, format, ap);
f53fb4f6 1730 va_end(ap);
81a9a914 1731 Output(+1, fMsg);
f53fb4f6 1732}
1733//____________________________________________________________________
1734AliForwardUtil::DebugGuard::~DebugGuard()
1735{
1736 if (fMsg.IsNull()) return;
81a9a914 1737 Output(-1, fMsg);
1738}
1739//____________________________________________________________________
1740void
1741AliForwardUtil::DebugGuard::Message(Int_t lvl, Int_t msgLvl,
1742 const char* format, ...)
1743{
1744 if (lvl < msgLvl) return;
1745 TString msg;
1746 va_list ap;
1747 va_start(ap, format);
1748 Format(msg, format, ap);
1749 va_end(ap);
1750 Output(0, msg);
1751}
1752
1753//____________________________________________________________________
1754void
1755AliForwardUtil::DebugGuard::Format(TString& out, const char* format, va_list ap)
1756{
1757 static char buf[512];
1758 Int_t n = gROOT->GetDirLevel() + 2;
1759 for (Int_t i = 0; i < n; i++) buf[i] = ' ';
1760 vsnprintf(&(buf[n]), 511-n, format, ap);
1761 buf[511] = '\0';
1762 out = buf;
f53fb4f6 1763}
1764//____________________________________________________________________
1765void
81a9a914 1766AliForwardUtil::DebugGuard::Output(int in, TString& msg)
f53fb4f6 1767{
81a9a914 1768 msg[0] = (in > 0 ? '>' : in < 0 ? '<' : '=');
1769 AliLog::Message(AliLog::kInfo, msg, 0, 0, "PWGLF/forward", 0, 0);
1770 if (in > 0) gROOT->IncreaseDirLevel();
1771 else if (in < 0) gROOT->DecreaseDirLevel();
f53fb4f6 1772}
1773
1774
1775
7e4038b5 1776//
1777// EOF
1778//