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Reference Guide
RooMinuit.cxx
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * @(#)root/roofitcore:$Id$
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 
17 /**
18 \file RooMinuit.cxx
19 \class RooMinuit
20 \ingroup Roofitcore
21 
22 RooMinuit is a wrapper class around TFitter/TMinuit that
23 provides a seamless interface between the MINUIT functionality
24 and the native RooFit interface.
25 RooMinuit can minimize any RooAbsReal function with respect to
26 its parameters. Usual choices for minimization are RooNLLVar
27 and RooChi2Var
28 RooMinuit has methods corresponding to MINUIT functions like
29 hesse(), migrad(), minos() etc. In each of these function calls
30 the state of the MINUIT engine is synchronized with the state
31 of the RooFit variables: any change in variables, change
32 in the constant status etc is forwarded to MINUIT prior to
33 execution of the MINUIT call. Afterwards the RooFit objects
34 are resynchronized with the output state of MINUIT: changes
35 parameter values, errors are propagated.
36 Various methods are available to control verbosity, profiling,
37 automatic PDF optimization.
38 **/
39 
40 #include "RooFit.h"
41 #include "Riostream.h"
42 
43 #include "TClass.h"
44 
45 #include <fstream>
46 #include <iomanip>
47 #include "TH1.h"
48 #include "TH2.h"
49 #include "TMarker.h"
50 #include "TGraph.h"
51 #include "TStopwatch.h"
52 #include "TFitter.h"
53 #include "TMinuit.h"
54 #include "TDirectory.h"
55 #include "TMatrixDSym.h"
56 #include "RooMinuit.h"
57 #include "RooArgSet.h"
58 #include "RooArgList.h"
59 #include "RooAbsReal.h"
60 #include "RooAbsRealLValue.h"
61 #include "RooRealVar.h"
62 #include "RooFitResult.h"
63 #include "RooAbsPdf.h"
64 #include "RooSentinel.h"
65 #include "RooMsgService.h"
66 #include "RooPlot.h"
67 
68 
69 
70 #if (__GNUC__==3&&__GNUC_MINOR__==2&&__GNUC_PATCHLEVEL__==3)
71 char* operator+( streampos&, char* );
72 #endif
73 
74 using namespace std;
75 
77 ;
78 
80 
81 
82 
83 ////////////////////////////////////////////////////////////////////////////////
84 /// Cleanup method called by atexit handler installed by RooSentinel
85 /// to delete all global heap objects when the program is terminated
86 
88 {
89  if (_theFitter) {
90  delete _theFitter ;
91  _theFitter =0 ;
92  }
93 }
94 
95 
96 
97 ////////////////////////////////////////////////////////////////////////////////
98 /// Construct MINUIT interface to given function. Function can be anything,
99 /// but is typically a -log(likelihood) implemented by RooNLLVar or a chi^2
100 /// (implemented by RooChi2Var). Other frequent use cases are a RooAddition
101 /// of a RooNLLVar plus a penalty or constraint term. This class propagates
102 /// all RooFit information (floating parameters, their values and errors)
103 /// to MINUIT before each MINUIT call and propagates all MINUIT information
104 /// back to the RooFit object at the end of each call (updated parameter
105 /// values, their (asymmetric errors) etc. The default MINUIT error level
106 /// for HESSE and MINOS error analysis is taken from the defaultErrorLevel()
107 /// value of the input function.
108 
110 {
112 
113  // Store function reference
114  _evalCounter = 0 ;
115  _extV = 0 ;
116  _func = &function ;
117  _logfile = 0 ;
118  _optConst = kFALSE ;
119  _verbose = kFALSE ;
120  _profile = kFALSE ;
121  _handleLocalErrors = kTRUE ;
122  _printLevel = 1 ;
123  _printEvalErrors = 10 ;
124  _warnLevel = -999 ;
125  _maxEvalMult = 500 ;
126  _doEvalErrorWall = kTRUE ;
127 
128  // Examine parameter list
129  RooArgSet* paramSet = function.getParameters(RooArgSet()) ;
130  RooArgList paramList(*paramSet) ;
131  delete paramSet ;
132 
133  _floatParamList = (RooArgList*) paramList.selectByAttrib("Constant",kFALSE) ;
134  if (_floatParamList->getSize()>1) {
135  _floatParamList->sort() ;
136  }
137  _floatParamList->setName("floatParamList") ;
138 
139  _constParamList = (RooArgList*) paramList.selectByAttrib("Constant",kTRUE) ;
140  if (_constParamList->getSize()>1) {
141  _constParamList->sort() ;
142  }
143  _constParamList->setName("constParamList") ;
144 
145  // Remove all non-RooRealVar parameters from list (MINUIT cannot handle them)
146  TIterator* pIter = _floatParamList->createIterator() ;
147  RooAbsArg* arg ;
148  while((arg=(RooAbsArg*)pIter->Next())) {
149  if (!arg->IsA()->InheritsFrom(RooAbsRealLValue::Class())) {
150  coutW(Minimization) << "RooMinuit::RooMinuit: removing parameter " << arg->GetName()
151  << " from list because it is not of type RooRealVar" << endl ;
152  _floatParamList->remove(*arg) ;
153  }
154  }
155  _nPar = _floatParamList->getSize() ;
156  delete pIter ;
157 
158  updateFloatVec() ;
159 
160  // Save snapshot of initial lists
161  _initFloatParamList = (RooArgList*) _floatParamList->snapshot(kFALSE) ;
162  _initConstParamList = (RooArgList*) _constParamList->snapshot(kFALSE) ;
163 
164  // Initialize MINUIT
165  Int_t nPar= _floatParamList->getSize() + _constParamList->getSize() ;
166  if (_theFitter) delete _theFitter ;
167  _theFitter = new TFitter(nPar*2+1) ; //WVE Kludge, nPar*2 works around TMinuit memory allocation bug
168  _theFitter->SetObjectFit(this) ;
169 
170  // Shut up for now
171  setPrintLevel(-1) ;
172  _theFitter->Clear();
173 
174  // Tell MINUIT to use our global glue function
175  _theFitter->SetFCN(RooMinuitGlue);
176 
177  // Use +0.5 for 1-sigma errors
178  setErrorLevel(function.defaultErrorLevel()) ;
179 
180  // Declare our parameters to MINUIT
181  synchronize(kFALSE) ;
182 
183  // Reset the *largest* negative log-likelihood value we have seen so far
184  _maxFCN= -1e30 ;
185  _numBadNLL = 0 ;
186 
187  // Now set default verbosity
188  if (RooMsgService::instance().silentMode()) {
189  setWarnLevel(-1) ;
190  setPrintLevel(-1) ;
191  } else {
192  setWarnLevel(1) ;
193  setPrintLevel(1) ;
194  }
195 }
196 
197 
198 
199 ////////////////////////////////////////////////////////////////////////////////
200 /// Destructor
201 
203 {
204  delete _floatParamList ;
205  delete _initFloatParamList ;
206  delete _constParamList ;
207  delete _initConstParamList ;
208  if (_extV) {
209  delete _extV ;
210  }
211 }
212 
213 
214 
215 ////////////////////////////////////////////////////////////////////////////////
216 /// Change MINUIT strategy to istrat. Accepted codes
217 /// are 0,1,2 and represent MINUIT strategies for dealing
218 /// most efficiently with fast FCNs (0), expensive FCNs (2)
219 /// and 'intermediate' FCNs (1)
220 
222 {
223  Double_t stratArg(istrat) ;
224  _theFitter->ExecuteCommand("SET STR",&stratArg,1) ;
225 }
226 
227 
228 
229 ////////////////////////////////////////////////////////////////////////////////
230 /// Set the level for MINUIT error analysis to the given
231 /// value. This function overrides the default value
232 /// that is taken in the RooMinuit constructor from
233 /// the defaultErrorLevel() method of the input function
234 
236 {
237  _theFitter->ExecuteCommand("SET ERR",&level,1);
238 }
239 
240 
241 
242 ////////////////////////////////////////////////////////////////////////////////
243 /// Change MINUIT epsilon
244 
246 {
247  _theFitter->ExecuteCommand("SET EPS",&eps,1) ;
248 }
249 
250 
251 
252 ////////////////////////////////////////////////////////////////////////////////
253 /// Enable internal likelihood offsetting for enhanced numeric precision
254 
256 {
257  _func->enableOffsetting(flag) ;
258 }
259 
260 
261 ////////////////////////////////////////////////////////////////////////////////
262 /// Parse traditional RooAbsPdf::fitTo driver options
263 ///
264 /// s - Run Hesse first to estimate initial step size
265 /// m - Run Migrad only
266 /// h - Run Hesse to estimate errors
267 /// v - Verbose mode
268 /// l - Log parameters after each Minuit steps to file
269 /// t - Activate profile timer
270 /// r - Save fit result
271 /// 0 - Run Migrad with strategy 0
272 
273 RooFitResult* RooMinuit::fit(const char* options)
274 {
275  if (_floatParamList->getSize()==0) {
276  return 0 ;
277  }
278 
279  _theFitter->SetObjectFit(this) ;
280 
281  TString opts(options) ;
282  opts.ToLower() ;
283 
284  // Initial configuration
285  if (opts.Contains("v")) setVerbose(1) ;
286  if (opts.Contains("t")) setProfile(1) ;
287  if (opts.Contains("l")) setLogFile(Form("%s.log",_func->GetName())) ;
288  if (opts.Contains("c")) optimizeConst(1) ;
289 
290  // Fitting steps
291  if (opts.Contains("s")) hesse() ;
292  if (opts.Contains("0")) setStrategy(0) ;
293  migrad() ;
294  if (opts.Contains("0")) setStrategy(1) ;
295  if (opts.Contains("h")||!opts.Contains("m")) hesse() ;
296  if (!opts.Contains("m")) minos() ;
297 
298  return (opts.Contains("r")) ? save() : 0 ;
299 }
300 
301 
302 
303 ////////////////////////////////////////////////////////////////////////////////
304 /// Execute MIGRAD. Changes in parameter values
305 /// and calculated errors are automatically
306 /// propagated back the RooRealVars representing
307 /// the floating parameters in the MINUIT operation
308 
310 {
311  if (_floatParamList->getSize()==0) {
312  return -1 ;
313  }
314 
315  _theFitter->SetObjectFit(this) ;
316 
317  Double_t arglist[2];
318  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
319  arglist[1]= 1.0; // tolerance
320 
321  synchronize(_verbose) ;
322  profileStart() ;
325  _status= _theFitter->ExecuteCommand("MIGRAD",arglist,2);
327  profileStop() ;
328  backProp() ;
329 
330  saveStatus("MIGRAD",_status) ;
331 
332  return _status ;
333 }
334 
335 
336 
337 ////////////////////////////////////////////////////////////////////////////////
338 /// Execute HESSE. Changes in parameter values
339 /// and calculated errors are automatically
340 /// propagated back the RooRealVars representing
341 /// the floating parameters in the MINUIT operation
342 
344 {
345  if (_floatParamList->getSize()==0) {
346  return -1 ;
347  }
348 
349  _theFitter->SetObjectFit(this) ;
350 
351  Double_t arglist[2];
352  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
353 
354  synchronize(_verbose) ;
355  profileStart() ;
358  _status= _theFitter->ExecuteCommand("HESSE",arglist,1);
360  profileStop() ;
361  backProp() ;
362 
363  saveStatus("HESSE",_status) ;
364 
365  return _status ;
366 }
367 
368 
369 
370 ////////////////////////////////////////////////////////////////////////////////
371 /// Execute MINOS. Changes in parameter values
372 /// and calculated errors are automatically
373 /// propagated back the RooRealVars representing
374 /// the floating parameters in the MINUIT operation
375 
377 {
378  if (_floatParamList->getSize()==0) {
379  return -1 ;
380  }
381 
382  _theFitter->SetObjectFit(this) ;
383 
384  Double_t arglist[2];
385  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
386 
387  synchronize(_verbose) ;
388  profileStart() ;
391  _status= _theFitter->ExecuteCommand("MINOS",arglist,1);
392  // check also the status of Minos looking at fCstatu
393  if (_status == 0 && gMinuit->fCstatu != "SUCCESSFUL") {
394  if (gMinuit->fCstatu == "FAILURE" ||
395  gMinuit->fCstatu == "PROBLEMS") _status = 5;
396  _status = 6;
397  }
398 
400  profileStop() ;
401  backProp() ;
402 
403  saveStatus("MINOS",_status) ;
404  return _status ;
405 }
406 
407 
408 // added FMV, 08/18/03
409 
410 ////////////////////////////////////////////////////////////////////////////////
411 /// Execute MINOS for given list of parameters. Changes in parameter values
412 /// and calculated errors are automatically
413 /// propagated back the RooRealVars representing
414 /// the floating parameters in the MINUIT operation
415 
416 Int_t RooMinuit::minos(const RooArgSet& minosParamList)
417 {
418  if (_floatParamList->getSize()==0) {
419  return -1 ;
420  }
421 
422  _theFitter->SetObjectFit(this) ;
423 
424  Int_t nMinosPar(0) ;
425  Double_t* arglist = new Double_t[_nPar+1];
426 
427  if (minosParamList.getSize()>0) {
428  TIterator* aIter = minosParamList.createIterator() ;
429  RooAbsArg* arg ;
430  while((arg=(RooAbsArg*)aIter->Next())) {
431  RooAbsArg* par = _floatParamList->find(arg->GetName());
432  if (par && !par->isConstant()) {
433  Int_t index = _floatParamList->index(par);
434  nMinosPar++;
435  arglist[nMinosPar]=index+1;
436  }
437  }
438  delete aIter ;
439  }
440  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
441 
442  synchronize(_verbose) ;
443  profileStart() ;
446  _status= _theFitter->ExecuteCommand("MINOS",arglist,1+nMinosPar);
447  // check also the status of Minos looking at fCstatu
448  if (_status == 0 && gMinuit->fCstatu != "SUCCESSFUL") {
449  if (gMinuit->fCstatu == "FAILURE" ||
450  gMinuit->fCstatu == "PROBLEMS") _status = 5;
451  _status = 6;
452  }
454  profileStop() ;
455  backProp() ;
456 
457  delete[] arglist ;
458 
459  saveStatus("MINOS",_status) ;
460 
461  return _status ;
462 }
463 
464 
465 
466 ////////////////////////////////////////////////////////////////////////////////
467 /// Execute SEEK. Changes in parameter values
468 /// and calculated errors are automatically
469 /// propagated back the RooRealVars representing
470 /// the floating parameters in the MINUIT operation
471 
473 {
474  if (_floatParamList->getSize()==0) {
475  return -1 ;
476  }
477 
478  _theFitter->SetObjectFit(this) ;
479 
480  Double_t arglist[2];
481  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
482 
483  synchronize(_verbose) ;
484  profileStart() ;
487  _status= _theFitter->ExecuteCommand("SEEK",arglist,1);
489  profileStop() ;
490  backProp() ;
491 
492  saveStatus("SEEK",_status) ;
493 
494  return _status ;
495 }
496 
497 
498 
499 ////////////////////////////////////////////////////////////////////////////////
500 /// Execute SIMPLEX. Changes in parameter values
501 /// and calculated errors are automatically
502 /// propagated back the RooRealVars representing
503 /// the floating parameters in the MINUIT operation
504 
506 {
507  if (_floatParamList->getSize()==0) {
508  return -1 ;
509  }
510 
511  _theFitter->SetObjectFit(this) ;
512 
513  Double_t arglist[2];
514  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
515  arglist[1]= 1.0; // tolerance
516 
517  synchronize(_verbose) ;
518  profileStart() ;
521  _status= _theFitter->ExecuteCommand("SIMPLEX",arglist,2);
523  profileStop() ;
524  backProp() ;
525 
526  saveStatus("SIMPLEX",_status) ;
527 
528  return _status ;
529 }
530 
531 
532 
533 ////////////////////////////////////////////////////////////////////////////////
534 /// Execute IMPROVE. Changes in parameter values
535 /// and calculated errors are automatically
536 /// propagated back the RooRealVars representing
537 /// the floating parameters in the MINUIT operation
538 
540 {
541  if (_floatParamList->getSize()==0) {
542  return -1 ;
543  }
544 
545  _theFitter->SetObjectFit(this) ;
546 
547  Double_t arglist[2];
548  arglist[0]= _maxEvalMult*_nPar; // maximum iterations
549 
550  synchronize(_verbose) ;
551  profileStart() ;
554  _status= _theFitter->ExecuteCommand("IMPROVE",arglist,1);
556  profileStop() ;
557  backProp() ;
558 
559  saveStatus("IMPROVE",_status) ;
560 
561  return _status ;
562 }
563 
564 
565 
566 ////////////////////////////////////////////////////////////////////////////////
567 /// Change the MINUIT internal printing level
568 
570 {
571  Int_t ret = _printLevel ;
572  Double_t arg(newLevel) ;
573  _theFitter->ExecuteCommand("SET PRINT",&arg,1);
574  _printLevel = newLevel ;
575  return ret ;
576 }
577 
578 
579 
580 ////////////////////////////////////////////////////////////////////////////////
581 /// Instruct MINUIT to suppress warnings
582 
584 {
585  Double_t arg(0) ;
586  _theFitter->ExecuteCommand("SET NOWARNINGS",&arg,1);
587  _warnLevel = -1 ;
588 }
589 
590 
591 
592 ////////////////////////////////////////////////////////////////////////////////
593 /// Set MINUIT warning level to given level
594 
596 {
597  if (newLevel==_warnLevel) {
598  return _warnLevel ;
599  }
600 
601  Int_t ret = _warnLevel ;
602  Double_t arg(newLevel) ;
603 
604  if (newLevel>=0) {
605  _theFitter->ExecuteCommand("SET WARNINGS",&arg,1);
606  } else {
607  Double_t arg2(0) ;
608  _theFitter->ExecuteCommand("SET NOWARNINGS",&arg2,1);
609  }
610  _warnLevel = newLevel ;
611 
612  return ret ;
613 }
614 
615 
616 
617 ////////////////////////////////////////////////////////////////////////////////
618 /// Internal function to synchronize TMinuit with current
619 /// information in RooAbsReal function parameters
620 
622 {
623  Int_t oldPrint = setPrintLevel(-1) ;
624  gMinuit->fNwrmes[0] = 0; // to clear buffer
625  Int_t oldWarn = setWarnLevel(-1) ;
626 
627  Bool_t constValChange(kFALSE) ;
628  Bool_t constStatChange(kFALSE) ;
629 
630  Int_t index(0) ;
631 
632  // Handle eventual migrations from constParamList -> floatParamList
633  for(index= 0; index < _constParamList->getSize() ; index++) {
634  RooRealVar *par= dynamic_cast<RooRealVar*>(_constParamList->at(index)) ;
635  if (!par) continue ;
636 
637  RooRealVar *oldpar= dynamic_cast<RooRealVar*>(_initConstParamList->at(index)) ;
638  if (!oldpar) continue ;
639 
640  // Test if constness changed
641  if (!par->isConstant()) {
642 
643  // Remove from constList, add to floatList
644  _constParamList->remove(*par) ;
645  _floatParamList->add(*par) ;
646  _initFloatParamList->addClone(*oldpar) ;
647  _initConstParamList->remove(*oldpar) ;
648  constStatChange=kTRUE ;
649  _nPar++ ;
650 
651  if (verbose) {
652  coutI(Minimization) << "RooMinuit::synchronize: parameter " << par->GetName() << " is now floating." << endl ;
653  }
654  }
655 
656  // Test if value changed
657  if (par->getVal()!= oldpar->getVal()) {
658  constValChange=kTRUE ;
659  if (verbose) {
660  coutI(Minimization) << "RooMinuit::synchronize: value of constant parameter " << par->GetName()
661  << " changed from " << oldpar->getVal() << " to " << par->getVal() << endl ;
662  }
663  }
664 
665  }
666 
667  // Update reference list
668  *_initConstParamList = *_constParamList ;
669 
670 
671  // Synchronize MINUIT with function state
672  for(index= 0; index < _nPar; index++) {
673  RooRealVar *par= dynamic_cast<RooRealVar*>(_floatParamList->at(index)) ;
674  if (!par) continue ;
675 
676  Double_t pstep(0) ;
677  Double_t pmin(0) ;
678  Double_t pmax(0) ;
679 
680  if(!par->isConstant()) {
681 
682  // Verify that floating parameter is indeed of type RooRealVar
683  if (!par->IsA()->InheritsFrom(RooRealVar::Class())) {
684  coutW(Minimization) << "RooMinuit::fit: Error, non-constant parameter " << par->GetName()
685  << " is not of type RooRealVar, skipping" << endl ;
686  continue ;
687  }
688 
689  // Set the limits, if not infinite
690  if (par->hasMin() && par->hasMax()) {
691  pmin = par->getMin();
692  pmax = par->getMax();
693  }
694 
695  // Calculate step size
696  pstep= par->getError();
697  if(pstep <= 0) {
698  // Floating parameter without error estitimate
699  if (par->hasMin() && par->hasMax()) {
700  pstep= 0.1*(pmax-pmin);
701 
702  // Trim default choice of error if within 2 sigma of limit
703  if (pmax - par->getVal() < 2*pstep) {
704  pstep = (pmax - par->getVal())/2 ;
705  } else if (par->getVal() - pmin < 2*pstep) {
706  pstep = (par->getVal() - pmin )/2 ;
707  }
708 
709  // If trimming results in zero error, restore default
710  if (pstep==0) {
711  pstep= 0.1*(pmax-pmin);
712  }
713 
714  } else {
715  pstep=1 ;
716  }
717  if(_verbose) {
718  coutW(Minimization) << "RooMinuit::synchronize: WARNING: no initial error estimate available for "
719  << par->GetName() << ": using " << pstep << endl;
720  }
721  }
722  } else {
723  pmin = par->getVal() ;
724  pmax = par->getVal() ;
725  }
726 
727  // Extract previous information
728  Double_t oldVar,oldVerr,oldVlo,oldVhi ;
729  char oldParname[100] ;
730  Int_t ierr = _theFitter->GetParameter(index,oldParname,oldVar,oldVerr,oldVlo,oldVhi) ;
731 
732  // Determine if parameters is currently fixed in MINUIT
733 
734  Int_t ix ;
735  Bool_t oldFixed(kFALSE) ;
736  if (ierr>=0) {
737  for (ix = 1; ix <= gMinuit->fNpfix; ++ix) {
738  if (gMinuit->fIpfix[ix-1] == index+1) oldFixed=kTRUE ;
739  }
740  }
741 
742  if (par->isConstant() && !oldFixed) {
743 
744  // Parameter changes floating -> constant : update only value if necessary
745  if (oldVar!=par->getVal()) {
746  Double_t arglist[2] ;
747  arglist[0] = index+1 ;
748  arglist[1] = par->getVal() ;
749  _theFitter->ExecuteCommand("SET PAR",arglist,2) ;
750  if (verbose) {
751  coutI(Minimization) << "RooMinuit::synchronize: value of parameter " << par->GetName() << " changed from " << oldVar << " to " << par->getVal() << endl ;
752  }
753  }
754 
755  _theFitter->FixParameter(index) ;
756  constStatChange=kTRUE ;
757  if (verbose) {
758  coutI(Minimization) << "RooMinuit::synchronize: parameter " << par->GetName() << " is now fixed." << endl ;
759  }
760 
761  } else if (par->isConstant() && oldFixed) {
762 
763  // Parameter changes constant -> constant : update only value if necessary
764  if (oldVar!=par->getVal()) {
765  Double_t arglist[2] ;
766  arglist[0] = index+1 ;
767  arglist[1] = par->getVal() ;
768  _theFitter->ExecuteCommand("SET PAR",arglist,2) ;
769  constValChange=kTRUE ;
770 
771  if (verbose) {
772  coutI(Minimization) << "RooMinuit::synchronize: value of fixed parameter " << par->GetName() << " changed from " << oldVar << " to " << par->getVal() << endl ;
773  }
774  }
775 
776  } else {
777 
778  if (!par->isConstant() && oldFixed) {
779  _theFitter->ReleaseParameter(index) ;
780  constStatChange=kTRUE ;
781 
782  if (verbose) {
783  coutI(Minimization) << "RooMinuit::synchronize: parameter " << par->GetName() << " is now floating." << endl ;
784  }
785  }
786 
787  // Parameter changes constant -> floating : update all if necessary
788  if (oldVar!=par->getVal() || oldVlo!=pmin || oldVhi != pmax || oldVerr!=pstep) {
789  _theFitter->SetParameter(index, par->GetName(), par->getVal(), pstep, pmin, pmax);
790  }
791 
792  // Inform user about changes in verbose mode
793  if (verbose && ierr>=0) {
794  // if ierr<0, par was moved from the const list and a message was already printed
795 
796  if (oldVar!=par->getVal()) {
797  coutI(Minimization) << "RooMinuit::synchronize: value of parameter " << par->GetName() << " changed from " << oldVar << " to " << par->getVal() << endl ;
798  }
799  if (oldVlo!=pmin || oldVhi!=pmax) {
800  coutI(Minimization) << "RooMinuit::synchronize: limits of parameter " << par->GetName() << " changed from [" << oldVlo << "," << oldVhi
801  << "] to [" << pmin << "," << pmax << "]" << endl ;
802  }
803 
804  // If oldVerr=0, then parameter was previously fixed
805  if (oldVerr!=pstep && oldVerr!=0) {
806  coutI(Minimization) << "RooMinuit::synchronize: error/step size of parameter " << par->GetName() << " changed from " << oldVerr << " to " << pstep << endl ;
807  }
808  }
809  }
810  }
811 
812 
813  gMinuit->fNwrmes[0] = 0; // to clear buffer
814  oldWarn = setWarnLevel(oldWarn) ;
815  oldPrint = setPrintLevel(oldPrint) ;
816 
817  if (_optConst) {
818  if (constStatChange) {
819 
821 
822  coutI(Minimization) << "RooMinuit::synchronize: set of constant parameters changed, rerunning const optimizer" << endl ;
823  _func->constOptimizeTestStatistic(RooAbsArg::ConfigChange) ;
824  } else if (constValChange) {
825  coutI(Minimization) << "RooMinuit::synchronize: constant parameter values changed, rerunning const optimizer" << endl ;
826  _func->constOptimizeTestStatistic(RooAbsArg::ValueChange) ;
827  }
828 
830 
831  }
832 
833  updateFloatVec() ;
834 
835  return 0 ;
836 }
837 
838 
839 
840 
841 ////////////////////////////////////////////////////////////////////////////////
842 /// If flag is true, perform constant term optimization on
843 /// function being minimized.
844 
846 {
848 
849  if (_optConst && !flag){
850  if (_printLevel>-1) coutI(Minimization) << "RooMinuit::optimizeConst: deactivating const optimization" << endl ;
851  _func->constOptimizeTestStatistic(RooAbsArg::DeActivate,flag>1) ;
852  _optConst = flag ;
853  } else if (!_optConst && flag) {
854  if (_printLevel>-1) coutI(Minimization) << "RooMinuit::optimizeConst: activating const optimization" << endl ;
855  _func->constOptimizeTestStatistic(RooAbsArg::Activate,flag>1) ;
856  _optConst = flag ;
857  } else if (_optConst && flag) {
858  if (_printLevel>-1) coutI(Minimization) << "RooMinuit::optimizeConst: const optimization already active" << endl ;
859  } else {
860  if (_printLevel>-1) coutI(Minimization) << "RooMinuit::optimizeConst: const optimization wasn't active" << endl ;
861  }
862 
864 
865 }
866 
867 
868 
869 ////////////////////////////////////////////////////////////////////////////////
870 /// Save and return a RooFitResult snaphot of current minimizer status.
871 /// This snapshot contains the values of all constant parameters,
872 /// the value of all floating parameters at RooMinuit construction and
873 /// after the last MINUIT operation, the MINUIT status, variance quality,
874 /// EDM setting, number of calls with evaluation problems, the minimized
875 /// function value and the full correlation matrix
876 
877 RooFitResult* RooMinuit::save(const char* userName, const char* userTitle)
878 {
879  TString name,title ;
880  name = userName ? userName : Form("%s", _func->GetName()) ;
881  title = userTitle ? userTitle : Form("%s", _func->GetTitle()) ;
882 
883  if (_floatParamList->getSize()==0) {
884  RooFitResult* fitRes = new RooFitResult(name,title) ;
885  fitRes->setConstParList(*_constParamList) ;
886  fitRes->setInitParList(RooArgList()) ;
887  fitRes->setFinalParList(RooArgList()) ;
888  fitRes->setStatus(-999) ;
889  fitRes->setCovQual(-999) ;
890  fitRes->setMinNLL(_func->getVal()) ;
891  fitRes->setNumInvalidNLL(0) ;
892  fitRes->setEDM(-999) ;
893  return fitRes ;
894  }
895 
896  RooFitResult* fitRes = new RooFitResult(name,title) ;
897 
898  // Move eventual fixed parameters in floatList to constList
899  Int_t i ;
900  RooArgList saveConstList(*_constParamList) ;
901  RooArgList saveFloatInitList(*_initFloatParamList) ;
902  RooArgList saveFloatFinalList(*_floatParamList) ;
903  for (i=0 ; i<_floatParamList->getSize() ; i++) {
904  RooAbsArg* par = _floatParamList->at(i) ;
905  if (par->isConstant()) {
906  saveFloatInitList.remove(*saveFloatInitList.find(par->GetName()),kTRUE) ;
907  saveFloatFinalList.remove(*par) ;
908  saveConstList.add(*par) ;
909  }
910  }
911  saveConstList.sort() ;
912 
913  fitRes->setConstParList(saveConstList) ;
914  fitRes->setInitParList(saveFloatInitList) ;
915 
916  Double_t edm, errdef, minVal;
917  Int_t nvpar, nparx;
918  Int_t icode = _theFitter->GetStats(minVal, edm, errdef, nvpar, nparx);
919  fitRes->setStatus(_status) ;
920  fitRes->setCovQual(icode) ;
921  fitRes->setMinNLL(minVal) ;
922  fitRes->setNumInvalidNLL(_numBadNLL) ;
923  fitRes->setEDM(edm) ;
924  fitRes->setFinalParList(saveFloatFinalList) ;
925  if (!_extV) {
926  fitRes->fillCorrMatrix() ;
927  } else {
928  fitRes->setCovarianceMatrix(*_extV) ;
929  }
930 
931  fitRes->setStatusHistory(_statusHistory) ;
932 
933  return fitRes ;
934 }
935 
936 
937 
938 
939 ////////////////////////////////////////////////////////////////////////////////
940 /// Create and draw a TH2 with the error contours in parameters var1 and v2 at up to 6 'sigma' settings
941 /// where 'sigma' is calculated as n*n*errorLevel
942 
944 {
945 
946  _theFitter->SetObjectFit(this) ;
947 
948  RooArgList* paramSave = (RooArgList*) _floatParamList->snapshot() ;
949 
950  // Verify that both variables are floating parameters of PDF
951  Int_t index1= _floatParamList->index(&var1);
952  if(index1 < 0) {
953  coutE(Minimization) << "RooMinuit::contour(" << GetName()
954  << ") ERROR: " << var1.GetName() << " is not a floating parameter of " << _func->GetName() << endl ;
955  return 0;
956  }
957 
958  Int_t index2= _floatParamList->index(&var2);
959  if(index2 < 0) {
960  coutE(Minimization) << "RooMinuit::contour(" << GetName()
961  << ") ERROR: " << var2.GetName() << " is not a floating parameter of PDF " << _func->GetName() << endl ;
962  return 0;
963  }
964 
965  // create and draw a frame
966  RooPlot* frame = new RooPlot(var1,var2) ;
967 
968  // draw a point at the current parameter values
969  TMarker *point= new TMarker(var1.getVal(), var2.getVal(), 8);
970  frame->addObject(point) ;
971 
972  // remember our original value of ERRDEF
973  Double_t errdef= gMinuit->fUp;
974 
975  Double_t n[6] ;
976  n[0] = n1 ; n[1] = n2 ; n[2] = n3 ; n[3] = n4 ; n[4] = n5 ; n[5] = n6 ;
977 
978 
979  for (Int_t ic = 0 ; ic<6 ; ic++) {
980  if(n[ic] > 0) {
981  // set the value corresponding to an n1-sigma contour
982  gMinuit->SetErrorDef(n[ic]*n[ic]*errdef);
983  // calculate and draw the contour
984  TGraph* graph= (TGraph*)gMinuit->Contour(50, index1, index2);
985  if (!graph) {
986  coutE(Minimization) << "RooMinuit::contour(" << GetName() << ") ERROR: MINUIT did not return a contour graph for n=" << n[ic] << endl ;
987  } else {
988  graph->SetName(Form("contour_%s_n%f",_func->GetName(),n[ic])) ;
989  graph->SetLineStyle(ic+1) ;
990  graph->SetLineWidth(2) ;
991  graph->SetLineColor(kBlue) ;
992  frame->addObject(graph,"L") ;
993  }
994  }
995  }
996 
997  // restore the original ERRDEF
998  gMinuit->SetErrorDef(errdef);
999 
1000  // restore parameter values
1001  *_floatParamList = *paramSave ;
1002  delete paramSave ;
1003 
1004 
1005  return frame ;
1006 }
1007 
1008 
1009 
1010 ////////////////////////////////////////////////////////////////////////////////
1011 /// Change the file name for logging of a RooMinuit of all MINUIT steppings
1012 /// through the parameter space. If inLogfile is null, the current log file
1013 /// is closed and logging is stopped.
1014 
1015 Bool_t RooMinuit::setLogFile(const char* inLogfile)
1016 {
1017  if (_logfile) {
1018  coutI(Minimization) << "RooMinuit::setLogFile: closing previous log file" << endl ;
1019  _logfile->close() ;
1020  delete _logfile ;
1021  _logfile = 0 ;
1022  }
1023  _logfile = new ofstream(inLogfile) ;
1024  if (!_logfile->good()) {
1025  coutI(Minimization) << "RooMinuit::setLogFile: cannot open file " << inLogfile << endl ;
1026  _logfile->close() ;
1027  delete _logfile ;
1028  _logfile= 0;
1029  }
1030  return kFALSE ;
1031 }
1032 
1033 
1034 
1035 ////////////////////////////////////////////////////////////////////////////////
1036 /// Access PDF parameter value by ordinal index (needed by MINUIT)
1037 
1039 {
1040  return ((RooRealVar*)_floatParamList->at(index))->getVal() ;
1041 }
1042 
1043 
1044 
1045 ////////////////////////////////////////////////////////////////////////////////
1046 /// Access PDF parameter error by ordinal index (needed by MINUIT)
1047 
1049 {
1050  return ((RooRealVar*)_floatParamList->at(index))->getError() ;
1051 }
1052 
1053 
1054 
1055 ////////////////////////////////////////////////////////////////////////////////
1056 /// Modify PDF parameter value by ordinal index (needed by MINUIT)
1057 
1059 {
1060  //RooRealVar* par = (RooRealVar*)_floatParamList->at(index) ;
1061  RooRealVar* par = (RooRealVar*)_floatParamVec[index] ;
1062 
1063  if (par->getVal()!=value) {
1064  if (verbose) cout << par->GetName() << "=" << value << ", " ;
1065  par->setVal(value) ;
1066  return kTRUE ;
1067  }
1068 
1069  return kFALSE ;
1070 }
1071 
1072 
1073 
1074 ////////////////////////////////////////////////////////////////////////////////
1075 /// Modify PDF parameter error by ordinal index (needed by MINUIT)
1076 
1078 {
1079  ((RooRealVar*)_floatParamList->at(index))->setError(value) ;
1080 }
1081 
1082 
1083 
1084 ////////////////////////////////////////////////////////////////////////////////
1085 /// Modify PDF parameter error by ordinal index (needed by MINUIT)
1086 
1088 {
1089  ((RooRealVar*)_floatParamList->at(index))->removeAsymError() ;
1090 }
1091 
1092 
1093 ////////////////////////////////////////////////////////////////////////////////
1094 /// Modify PDF parameter error by ordinal index (needed by MINUIT)
1095 
1097 {
1098  ((RooRealVar*)_floatParamList->at(index))->setAsymError(loVal,hiVal) ;
1099 }
1100 
1101 
1102 
1103 ////////////////////////////////////////////////////////////////////////////////
1104 /// Start profiling timer
1105 
1107 {
1108  if (_profile) {
1109  _timer.Start() ;
1110  _cumulTimer.Start(kFALSE) ;
1111  }
1112 }
1113 
1114 
1115 
1116 
1117 ////////////////////////////////////////////////////////////////////////////////
1118 /// Stop profiling timer and report results of last session
1119 
1121 {
1122  if (_profile) {
1123  _timer.Stop() ;
1124  _cumulTimer.Stop() ;
1125  coutI(Minimization) << "Command timer: " ; _timer.Print() ;
1126  coutI(Minimization) << "Session timer: " ; _cumulTimer.Print() ;
1127  }
1128 }
1129 
1130 
1131 
1132 
1133 
1134 ////////////////////////////////////////////////////////////////////////////////
1135 /// Transfer MINUIT fit results back into RooFit objects
1136 
1138 {
1139  Double_t val,err,vlo,vhi, eplus, eminus, eparab, globcc;
1140  char buffer[64000];
1141  Int_t index ;
1142  for(index= 0; index < _nPar; index++) {
1143  _theFitter->GetParameter(index, buffer, val, err, vlo, vhi);
1144  setPdfParamVal(index, val);
1145  _theFitter->GetErrors(index, eplus, eminus, eparab, globcc);
1146 
1147  // Set the parabolic error
1148  setPdfParamErr(index, err);
1149 
1150  if(eplus > 0 || eminus < 0) {
1151  // Store the asymmetric error, if it is available
1152  setPdfParamErr(index, eminus,eplus);
1153  } else {
1154  // Clear the asymmetric error
1155  clearPdfParamAsymErr(index) ;
1156  }
1157  }
1158 }
1159 
1160 
1161 ////////////////////////////////////////////////////////////////////////////////
1162 
1164 {
1165  _floatParamVec.clear() ;
1166  RooFIter iter = _floatParamList->fwdIterator() ;
1167  RooAbsArg* arg ;
1168  _floatParamVec.resize(_floatParamList->getSize()) ;
1169  Int_t i(0) ;
1170  while((arg=iter.next())) {
1171  _floatParamVec[i++] = arg ;
1172  }
1173 }
1174 
1175 
1176 
1177 ////////////////////////////////////////////////////////////////////////////////
1178 /// Apply results of given external covariance matrix. i.e. propagate its errors
1179 /// to all RRV parameter representations and give this matrix instead of the
1180 /// HESSE matrix at the next save() call
1181 
1183 {
1184  _extV = (TMatrixDSym*) V.Clone() ;
1185 
1186  for (Int_t i=0 ; i<getNPar() ; i++) {
1187  // Skip fixed parameters
1188  if (_floatParamList->at(i)->isConstant()) {
1189  continue ;
1190  }
1191  RooMinuit* context = (RooMinuit*) RooMinuit::_theFitter->GetObjectFit() ;
1192  if (context && context->_verbose)
1193  cout << "setting parameter " << i << " error to " << sqrt((*_extV)(i,i)) << endl ;
1194  setPdfParamErr(i, sqrt((*_extV)(i,i))) ;
1195  }
1196 
1197 }
1198 
1199 
1200 
1201 
1202 void RooMinuitGlue(Int_t& /*np*/, Double_t* /*gin*/,
1203  Double_t &f, Double_t *par, Int_t /*flag*/)
1204 {
1205  // Static function that interfaces minuit with RooMinuit
1206 
1207  // Retrieve fit context and its components
1208  RooMinuit* context = (RooMinuit*) RooMinuit::_theFitter->GetObjectFit() ;
1209  ofstream* logf = context->logfile() ;
1210  Double_t& maxFCN = context->maxFCN() ;
1211  Bool_t verbose = context->_verbose ;
1212 
1213  // Set the parameter values for this iteration
1214  Int_t nPar= context->getNPar();
1215  for(Int_t index= 0; index < nPar; index++) {
1216  if (logf) (*logf) << par[index] << " " ;
1217  context->setPdfParamVal(index, par[index],verbose);
1218  }
1219 
1220  // Calculate the function for these parameters
1222  f= context->_func->getVal() ;
1224  context->_evalCounter++ ;
1225  if ( RooAbsPdf::evalError() || RooAbsReal::numEvalErrors()>0 || f>1e30) {
1226 
1227  if (context->_printEvalErrors>=0) {
1228 
1229  if (context->_doEvalErrorWall) {
1230  oocoutW(context,Minimization) << "RooMinuitGlue: Minimized function has error status." << endl
1231  << "Returning maximum FCN so far (" << maxFCN
1232  << ") to force MIGRAD to back out of this region. Error log follows" << endl ;
1233  } else {
1234  oocoutW(context,Minimization) << "RooMinuitGlue: Minimized function has error status but is ignored" << endl ;
1235  }
1236 
1237  TIterator* iter = context->_floatParamList->createIterator() ;
1238  RooRealVar* var ;
1239  Bool_t first(kTRUE) ;
1240  ooccoutW(context,Minimization) << "Parameter values: " ;
1241  while((var=(RooRealVar*)iter->Next())) {
1242  if (first) { first = kFALSE ; } else ooccoutW(context,Minimization) << ", " ;
1243  ooccoutW(context,Minimization) << var->GetName() << "=" << var->getVal() ;
1244  }
1245  delete iter ;
1246  ooccoutW(context,Minimization) << endl ;
1247 
1249  ooccoutW(context,Minimization) << endl ;
1250  }
1251 
1252  if (context->_doEvalErrorWall) {
1253  f = maxFCN+1 ;
1254  }
1255 
1258  context->_numBadNLL++ ;
1259  } else if (f>maxFCN) {
1260  maxFCN = f ;
1261  }
1262 
1263  // Optional logging
1264  if (logf) (*logf) << setprecision(15) << f << setprecision(4) << endl;
1265  if (verbose) {
1266  cout << "\nprevFCN" << (context->_func->isOffsetting()?"-offset":"") << " = " << setprecision(10) << f << setprecision(4) << " " ;
1267  cout.flush() ;
1268  }
1269 }
virtual Double_t getMin(const char *name=0) const
virtual const char * GetName() const
Returns name of object.
Definition: TNamed.h:47
std::string GetName(const std::string &scope_name)
Definition: Cppyy.cxx:145
static TVirtualFitter * _theFitter
Definition: RooMinuit.h:140
virtual void SetLineWidth(Width_t lwidth)
Set the line width.
Definition: TAttLine.h:43
TIterator * createIterator(Bool_t dir=kIterForward) const
Int_t * fIpfix
Definition: TMinuit.h:129
#define coutE(a)
Definition: RooMsgService.h:34
virtual Bool_t add(const RooAbsArg &var, Bool_t silent=kFALSE)
Add the specified argument to list.
Int_t seek()
Execute SEEK.
Definition: RooMinuit.cxx:472
Bool_t _verbose
Definition: RooMinuit.h:134
void sort(Bool_t reverse=kFALSE)
Definition: RooArgList.h:72
Bool_t hasMin(const char *name=0) const
TString fCstatu
Definition: TMinuit.h:167
virtual Double_t getMax(const char *name=0) const
RooPlot * contour(RooRealVar &var1, RooRealVar &var2, Double_t n1=1, Double_t n2=2, Double_t n3=0, Double_t n4=0, Double_t n5=0, Double_t n6=0)
Create and draw a TH2 with the error contours in parameters var1 and v2 at up to 6 &#39;sigma&#39; settings w...
Definition: RooMinuit.cxx:943
void sort(Bool_t ascend=kTRUE)
Int_t simplex()
Execute SIMPLEX.
Definition: RooMinuit.cxx:505
void setStatusHistory(std::vector< std::pair< std::string, int > > &hist)
Definition: RooFitResult.h:176
void addObject(TObject *obj, Option_t *drawOptions="", Bool_t invisible=kFALSE)
Add a generic object to this plot.
Definition: RooPlot.cxx:392
#define coutI(a)
Definition: RooMsgService.h:31
Int_t hesse()
Execute HESSE.
Definition: RooMinuit.cxx:343
Double_t getVal(const RooArgSet *set=0) const
Definition: RooAbsReal.h:64
virtual void SetName(const char *name)
Set the name of the TNamed.
Definition: TNamed.cxx:140
Bool_t synchronize(Bool_t verbose)
Internal function to synchronize TMinuit with current information in RooAbsReal function parameters...
Definition: RooMinuit.cxx:621
void setNumInvalidNLL(Int_t val)
Definition: RooFitResult.h:171
Int_t minos()
Execute MINOS.
Definition: RooMinuit.cxx:376
void setStatus(Int_t val)
Definition: RooFitResult.h:169
Bool_t hasMax(const char *name=0) const
static void clearEvalErrorLog()
Clear the stack of evaluation error messages.
Manages Markers.
Definition: TMarker.h:23
int Int_t
Definition: RtypesCore.h:41
bool Bool_t
Definition: RtypesCore.h:59
void setEps(Double_t eps)
Change MINUIT epsilon.
Definition: RooMinuit.cxx:245
static RooMsgService & instance()
Return reference to singleton instance.
STL namespace.
Int_t migrad()
Execute MIGRAD.
Definition: RooMinuit.cxx:309
void setStrategy(Int_t strat)
Change MINUIT strategy to istrat.
Definition: RooMinuit.cxx:221
#define coutW(a)
Definition: RooMsgService.h:33
void setInitParList(const RooArgList &list)
Fill the list of initial values of the floating parameters.
#define ooccoutW(o, a)
Definition: RooMsgService.h:53
static void setHideOffset(Bool_t flag)
Definition: RooAbsReal.cxx:116
Double_t getPdfParamVal(Int_t index)
Access PDF parameter value by ordinal index (needed by MINUIT)
Definition: RooMinuit.cxx:1038
void profileStop()
Stop profiling timer and report results of last session.
Definition: RooMinuit.cxx:1120
Iterator abstract base class.
Definition: TIterator.h:30
RooAbsReal * _func
Definition: RooMinuit.h:130
void setEDM(Double_t val)
Definition: RooFitResult.h:168
void updateFloatVec()
Definition: RooMinuit.cxx:1163
void setErrorLevel(Double_t level)
Set the level for MINUIT error analysis to the given value.
Definition: RooMinuit.cxx:235
Int_t _numBadNLL
Definition: RooMinuit.h:120
double sqrt(double)
R__EXTERN TMinuit * gMinuit
Definition: TMinuit.h:271
static void setEvalErrorLoggingMode(ErrorLoggingMode m)
Set evaluation error logging mode.
void applyCovarianceMatrix(TMatrixDSym &V)
Apply results of given external covariance matrix.
Definition: RooMinuit.cxx:1182
void Class()
Definition: Class.C:29
virtual Bool_t setPdfParamVal(Int_t index, Double_t value, Bool_t verbose=kFALSE)
Modify PDF parameter value by ordinal index (needed by MINUIT)
Definition: RooMinuit.cxx:1058
Int_t setPrintLevel(Int_t newLevel)
Change the MINUIT internal printing level.
Definition: RooMinuit.cxx:569
static constexpr double eplus
virtual TObject * Contour(Int_t npoints=10, Int_t pa1=0, Int_t pa2=1)
Creates a TGraph object describing the n-sigma contour of a TMinuit fit.
Definition: TMinuit.cxx:662
RooAbsCollection * selectByAttrib(const char *name, Bool_t value) const
Create a subset of the current collection, consisting only of those elements with the specified attri...
void function(const Char_t *name_, T fun, const Char_t *docstring=0)
Definition: RExports.h:146
TString operator+(const TString &s1, const TString &s2)
Use the special concatenation constructor.
Definition: TString.cxx:1448
static void clearEvalError()
Clear the evaluation error flag.
Definition: RooAbsPdf.cxx:3173
RooRealVar represents a fundamental (non-derived) real valued object.
Definition: RooRealVar.h:36
void setMinNLL(Double_t val)
Definition: RooFitResult.h:167
virtual void setVal(Double_t value)
Set value of variable to &#39;value&#39;.
Definition: RooRealVar.cxx:205
virtual void SetLineColor(Color_t lcolor)
Set the line color.
Definition: TAttLine.h:40
Double_t getPdfParamErr(Int_t index)
Access PDF parameter error by ordinal index (needed by MINUIT)
Definition: RooMinuit.cxx:1048
Int_t getSize() const
Bool_t _doEvalErrorWall
Definition: RooMinuit.h:123
RooAbsCollection * snapshot(Bool_t deepCopy=kTRUE) const
Take a snap shot of current collection contents: An owning collection is returned containing clones o...
Int_t fNpfix
Definition: TMinuit.h:37
void setOffsetting(Bool_t flag)
Enable internal likelihood offsetting for enhanced numeric precision.
Definition: RooMinuit.cxx:255
static Int_t numEvalErrors()
Return the number of logged evaluation errors since the last clearing.
virtual Bool_t InheritsFrom(const char *classname) const
Returns kTRUE if object inherits from class "classname".
Definition: TObject.cxx:443
static void cleanup()
Cleanup method called by atexit handler installed by RooSentinel to delete all global heap objects wh...
Definition: RooMinuit.cxx:87
char * Form(const char *fmt,...)
virtual Int_t SetErrorDef(Double_t up)
To get the n-sigma contour the error def parameter "up" has to set to n^2.
Definition: TMinuit.cxx:917
void setFinalParList(const RooArgList &list)
Fill the list of final values of the floating parameters.
static void printEvalErrors(std::ostream &os=std::cout, Int_t maxPerNode=10000000)
Print all outstanding logged evaluation error on the given ostream.
RooArgList * _floatParamList
Definition: RooMinuit.h:125
virtual ~RooMinuit()
Destructor.
Definition: RooMinuit.cxx:202
Int_t setWarnLevel(Int_t newLevel)
Set MINUIT warning level to given level.
Definition: RooMinuit.cxx:595
RooMinuit(RooAbsReal &function)
Construct MINUIT interface to given function.
Definition: RooMinuit.cxx:109
Int_t getNPar() const
Definition: RooMinuit.h:96
Definition: graph.py:1
RooAbsArg * next()
Int_t _evalCounter
Definition: RooMinuit.h:113
A RooPlot is a plot frame and a container for graphics objects within that frame. ...
Definition: RooPlot.h:41
const Bool_t kFALSE
Definition: RtypesCore.h:88
static void activate()
Install atexit handler that calls CleanupRooFitAtExit() on program termination.
Definition: RooSentinel.cxx:71
void setConstParList(const RooArgList &list)
Fill the list of constant parameters.
#define ClassImp(name)
Definition: Rtypes.h:359
void RooMinuitGlue(Int_t &, Double_t *, Double_t &f, Double_t *par, Int_t)
Definition: RooMinuit.cxx:1202
RooAbsArg * find(const char *name) const
Find object with given name in list.
double Double_t
Definition: RtypesCore.h:55
RooAbsReal is the common abstract base class for objects that represent a real value and implements f...
Definition: RooAbsReal.h:53
RooFitResult * save(const char *name=0, const char *title=0)
Save and return a RooFitResult snaphot of current minimizer status.
Definition: RooMinuit.cxx:877
void clearPdfParamAsymErr(Int_t index)
Modify PDF parameter error by ordinal index (needed by MINUIT)
Definition: RooMinuit.cxx:1087
virtual void SetLineStyle(Style_t lstyle)
Set the line style.
Definition: TAttLine.h:42
Double_t & maxFCN()
Definition: RooMinuit.h:98
Abstract Base Class for Fitting.
#define oocoutW(o, a)
Definition: RooMsgService.h:46
virtual TObject * Clone(const char *newname="") const
Make a clone of an object using the Streamer facility.
Definition: TObject.cxx:144
virtual Bool_t remove(const RooAbsArg &var, Bool_t silent=kFALSE, Bool_t matchByNameOnly=kFALSE)
Remove the specified argument from our list.
RooFitResult * fit(const char *options)
Parse traditional RooAbsPdf::fitTo driver options.
Definition: RooMinuit.cxx:273
void profileStart()
Start profiling timer.
Definition: RooMinuit.cxx:1106
Int_t _printEvalErrors
Definition: RooMinuit.h:122
static Bool_t evalError()
Return the evaluation error flag.
Definition: RooAbsPdf.cxx:3183
virtual TObject * Next()=0
A Graph is a graphics object made of two arrays X and Y with npoints each.
Definition: TGraph.h:41
void setPdfParamErr(Int_t index, Double_t value)
Modify PDF parameter error by ordinal index (needed by MINUIT)
Definition: RooMinuit.cxx:1077
void setCovQual(Int_t val)
Definition: RooFitResult.h:170
Double_t fUp
Definition: TMinuit.h:50
Bool_t setLogFile(const char *logfile=0)
Change the file name for logging of a RooMinuit of all MINUIT steppings through the parameter space...
Definition: RooMinuit.cxx:1015
void setNoWarn()
Instruct MINUIT to suppress warnings.
Definition: RooMinuit.cxx:583
Definition: Rtypes.h:59
Definition: first.py:1
RooAbsArg is the common abstract base class for objects that represent a value (of arbitrary type) an...
Definition: RooAbsArg.h:66
void fillCorrMatrix()
Internal utility method to extract the correlation matrix and the global correlation coefficients fro...
Double_t getError() const
Definition: RooRealVar.h:53
void backProp()
Transfer MINUIT fit results back into RooFit objects.
Definition: RooMinuit.cxx:1137
Int_t improve()
Execute IMPROVE.
Definition: RooMinuit.cxx:539
const Bool_t kTRUE
Definition: RtypesCore.h:87
virtual Bool_t isOffsetting() const
Definition: RooAbsReal.h:308
void setCovarianceMatrix(TMatrixDSym &V)
Store externally provided correlation matrix in this RooFitResult ;.
const Int_t n
Definition: legend1.C:16
Int_t fNwrmes[2]
Definition: TMinuit.h:151
char name[80]
Definition: TGX11.cxx:109
Bool_t isConstant() const
Definition: RooAbsArg.h:266
std::ofstream * logfile() const
Definition: RooMinuit.h:97
RooMinuit is a wrapper class around TFitter/TMinuit that provides a seamless interface between the MI...
Definition: RooMinuit.h:39
void optimizeConst(Int_t flag)
If flag is true, perform constant term optimization on function being minimized.
Definition: RooMinuit.cxx:845