FastJet  3.3.0
Selector.hh
1 #ifndef __FASTJET_SELECTOR_HH__
2 #define __FASTJET_SELECTOR_HH__
3 
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5 // $Id: Selector.hh 3711 2014-09-29 13:54:51Z salam $
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33 
34 #include "fastjet/PseudoJet.hh"
35 #ifndef __FJCORE__
36 #include "fastjet/RangeDefinition.hh" // for initialisation from a RangeDefinition
37 #endif // __FJCORE__
38 #include <limits>
39 #include <cmath>
40 
41 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
42 
43 //----------------------------------------------------------------------
44 /// @ingroup selectors
45 /// \class Selector
46 /// Class that encodes information about cuts and other selection
47 /// criteria that can be applied to PseudoJet(s).
48 ///
49 class Selector;
50 //----------------------------------------------------------------------
51 
52 /// @ingroup selectors
53 /// \class SelectorWorker
54 /// default selector worker is an abstract virtual base class
55 ///
56 /// The Selector class is only an interface, it is the SelectorWorker
57 /// that really does the work. To implement various selectors, one
58 /// thus has to overload this class.
60 public:
61  //----------------------------------------------------------
62  // fundamental info
63  //----------------------------------------------------------
64  /// default dtor
65  virtual ~SelectorWorker() {}
66 
67  //----------------------------------------------------------
68  // basic operations for checking what gets selected
69  //----------------------------------------------------------
70 
71  /// returns true if a given object passes the selection criterion,
72  /// and is the main function that needs to be overloaded by derived
73  /// workers.
74  ///
75  /// NB: this function is used only if applies_jet_by_jet() returns
76  /// true. If it does not, then derived classes are expected to
77  /// (re)implement the terminator function()
78  virtual bool pass(const PseudoJet & jet) const = 0;
79 
80  /// For each jet that does not pass the cuts, this routine sets the
81  /// pointer to 0.
82  ///
83  /// It does not assume that the PseudoJet* passed as argument are not NULL
84  virtual void terminator(std::vector<const PseudoJet *> & jets) const {
85  for (unsigned i = 0; i < jets.size(); i++) {
86  if (jets[i] && !pass(*jets[i])) jets[i] = NULL;
87  }
88  }
89 
90  /// returns true if this can be applied jet by jet
91  virtual bool applies_jet_by_jet() const {return true;}
92 
93  /// returns a description of the worker
94  virtual std::string description() const {return "missing description";}
95 
96 
97  //----------------------------------------------------------
98  // operations for dealing with reference jets
99  //----------------------------------------------------------
100 
101  /// returns true if the worker is defined with respect to a reference jet
102  virtual bool takes_reference() const { return false;}
103 
104  /// sets the reference jet for the selector
105  /// NB: "reference" is commented to avoid unused-variable compiler warnings
106  virtual void set_reference(const PseudoJet & /*reference*/){
107  throw Error("set_reference(...) cannot be used for a selector worker that does not take a reference");
108  }
109 
110  /// return a copy of the current object.
111  ///
112  /// This function is only called for objects that take a reference and need
113  /// not be reimplemented otherwise.
114  virtual SelectorWorker* copy(){
115  throw Error("this SelectorWorker has nothing to copy");
116  }
117 
118  //----------------------------------------------------------
119  // operations for area and extent
120  //----------------------------------------------------------
121 
122  /// returns the rapidity range for which it may return "true"
123  virtual void get_rapidity_extent(double & rapmin, double & rapmax) const {
124  rapmax = std::numeric_limits<double>::infinity();
125  rapmin = -rapmax;
126  }
127 
128  /// check if it is a geometric selector (i.e. only puts constraints
129  /// on rapidity and azimuthal angle)
130  virtual bool is_geometric() const { return false;}
131 
132  /// check if it has a finite area
133  virtual bool has_finite_area() const;
134 
135  /// check if it has an analytically computable area
136  virtual bool has_known_area() const { return false;}
137 
138  /// if it has a computable area, return it
139  virtual double known_area() const{
140  throw Error("this selector has no computable area");
141  }
142 
143 };
144 
145 //----------------------------------------------------------------------
146 // class Selector
147 //
148 // Class that encodes information about cuts that
149 class Selector{
150 public:
151  /// default constructor produces a Selector whose action is undefined
152  /// (any attempt to use it will lead to an error)
153  Selector() {}
154 
155  /// constructor that causes the Selector to use the supplied worker
156  ///
157  /// Note that the Selector takes ownership of the pointer to the
158  /// worker (and so will delete automatically when appropriate).
159  Selector(SelectorWorker * worker_in) {_worker.reset(worker_in);}
160 
161 #ifndef __FJCORE__
162  /// ctor from a RangeDefinition
163  ///
164  /// This is provided for backward compatibility and will be removed in
165  /// a future major release of FastJet
166  ///
167  /// Watch out that the Selector will only hold a pointer to the
168  /// range so the selector will crash if one tries to use it after
169  /// the range has gone out of scope. We thus strongly advise against
170  /// the direct use of this constructor.
171  Selector(const RangeDefinition &range);
172 #endif // __FJCORE__
173 
174  /// dummy virtual dtor
175  virtual ~Selector(){}
176 
177  /// return true if the jet passes the selection
178  bool pass(const PseudoJet & jet) const {
179  if (!validated_worker()->applies_jet_by_jet()) {
180  throw Error("Cannot apply this selector to an individual jet");
181  }
182  return _worker->pass(jet);
183  }
184 
185  /// an operator way of knowing whether a given jet passes the selection or not
186  bool operator()(const PseudoJet & jet) const {
187  return pass(jet);
188  }
189 
190  /// Return a count of the objects that pass the selection.
191  ///
192  /// This will often be more efficient that getting the vector of objects that
193  /// passes and then evaluating the size of the vector
194  unsigned int count(const std::vector<PseudoJet> & jets) const;
195 
196  /// Return the 4-vector sum of the objects that pass the selection.
197  ///
198  /// This will often be more efficient that getting the vector of objects that
199  /// passes and then evaluating the size of the vector
200  PseudoJet sum(const std::vector<PseudoJet> & jets) const;
201 
202  /// Return the scalar pt sum of the objects that pass the selection.
203  ///
204  /// This will often be more efficient that getting the vector of objects that
205  /// passes and then evaluating the size of the vector
206  double scalar_pt_sum(const std::vector<PseudoJet> & jets) const;
207 
208  /// sift the input jets into two vectors -- those that pass the selector
209  /// and those that do not
210  void sift(const std::vector<PseudoJet> & jets,
211  std::vector<PseudoJet> & jets_that_pass,
212  std::vector<PseudoJet> & jets_that_fail) const;
213 
214  /// returns true if this can be applied jet by jet
215  bool applies_jet_by_jet() const {
216  return validated_worker()->applies_jet_by_jet();
217  }
218 
219  /// returns a vector with the jets that pass the selection
220  std::vector<PseudoJet> operator()(const std::vector<PseudoJet> & jets) const;
221 
222  /// For each jet that does not pass the cuts, this routine sets the
223  /// pointer to 0.
224  ///
225  /// It is legitimate for some (or all) of the pointers that are
226  /// passed to already be NULL.
227  virtual void nullify_non_selected(std::vector<const PseudoJet *> & jets) const {
228  validated_worker()->terminator(jets);
229  }
230 
231  /// returns the rapidity range for which it may return "true"
232  void get_rapidity_extent(double &rapmin, double &rapmax) const {
233  return validated_worker()->get_rapidity_extent(rapmin, rapmax);
234  }
235 
236  /// returns a textual description of the selector
237  std::string description() const {
238  return validated_worker()->description();
239  }
240 
241  /// returns true if it is a geometric selector (i.e. one that only puts
242  /// constraints on rapidities and azimuthal angles)
243  bool is_geometric() const{
244  return validated_worker()->is_geometric();
245  }
246 
247  /// returns true if it has a meaningful and finite area (i.e. the
248  /// Selector has the property that is_geometric() returns true and
249  /// the rapidity extent is finite).
250  bool has_finite_area() const{
251  return validated_worker()->has_finite_area();
252  }
253 
254 #ifndef __FJCORE__
255  /// returns the rapidity-phi area associated with the Selector
256  /// (throws InvalidArea if the area does not make sense).
257  ///
258  /// If the result is not known analytically, the area will be
259  /// estimated using a pseudo Monte Carlo method (as for jet areas),
260  /// using the default ghost area from the GhostedAreaSpec class
261  /// (0.01). The Monte Carlo estimate involves a time penalty
262  /// proportional to the ratio of the rapidity extent of the Selector
263  /// divided by the ghost area.
264  double area() const;
265 
266  /// returns the rapidity-phi area associated with the Selector
267  /// (throws InvalidArea if the area does not make sense).
268  ///
269  /// The behaviour is the as with the area() call, but with the
270  /// ability to additionally specify the ghost area to be used in the
271  /// case of a Monte Carlo area evaluation.
272  ///
273  double area(double ghost_area) const;
274 #endif // __FJCORE__
275 
276  /// returns a (reference to) the underlying worker's shared pointer
277  const SharedPtr<SelectorWorker> & worker() const {return _worker;}
278 
279  /// returns a worker if there is a valid one, otherwise throws an InvalidWorker error
281  const SelectorWorker* worker_ptr = _worker.get();
282  if (worker_ptr == 0) throw InvalidWorker();
283  return worker_ptr;
284  }
285 
286  /// returns true if this can be applied jet by jet
287  bool takes_reference() const {
288  return validated_worker()->takes_reference();
289  }
290 
291  /// set the reference jet for this Selector
292  const Selector & set_reference(const PseudoJet &reference){
293 
294  // if the worker does not take a reference jet, do nothing
295  if (! validated_worker()->takes_reference()){
296  return *this;
297  }
298 
299  // since this is a non-const operation, make sure we have a
300  // correct behaviour with respect to shared workers
301  _copy_worker_if_needed();
302 
303  _worker->set_reference(reference);
304  return *this;
305  }
306 
307  /// class that gets thrown when a Selector is applied despite it not
308  /// having a valid underlying worker.
309  class InvalidWorker : public Error {
310  public:
311  InvalidWorker() : Error("Attempt to use Selector with no valid underlying worker") {}
312  };
313 
314  /// class that gets thrown when the area is requested from a Selector for which
315  /// the area is not meaningful
316  class InvalidArea : public Error {
317  public:
318  InvalidArea() : Error("Attempt to obtain area from Selector for which this is not meaningful") {}
319  };
320 
321  // some operators (applying directly on a Selector)
322  //----------------------------------------------------------------------
323  /// For 2 Selectors a and b, a &= b is eauivalent to a = a && b;
324  Selector & operator &=(const Selector & b);
325 
326  /// For 2 Selectors a and b, a |= b is eauivalent to a = a || b;
327  Selector & operator |=(const Selector & b);
328 
329 
330 protected:
331  /// Helper for copying selector workers if needed
332  ///
333  /// The following is needed if we want to modify a selectors that
334  /// shares a worker with another selector. In that case, we need to
335  /// get another copy of the worker to avoid interferences
336  ///
337  /// Note that any non-const operation has to call this to behave
338  /// correctly w.r.t shared workers!
340  // do nothing if there's a sinlge user of the worker
341  if (_worker.unique()) return;
342 
343  // call the worker's copy
344  //std::cout << "will make a copy of " << description() << std::endl;
345  _worker.reset(_worker->copy());
346  }
347 
348 private:
349  SharedPtr<SelectorWorker> _worker; ///< the underlying worker
350 };
351 
352 
353 //----------------------------------------------------------------------
354 // a list of specific selectors
355 //----------------------------------------------------------------------
356 
357 /// \addtogroup selectors
358 /// @{
359 
360 
361 // fundamental selectors
362 //----------------------------------------------------------------------
363 
364 // "identity" selector that lets everything pass
365 Selector SelectorIdentity();
366 
367 // logical operations
368 //----------------------------------------------------------------------
369 
370 /// logical not applied on a selector
371 ///
372 /// This will keep objects that do not pass the 's' selector
373 Selector operator!(const Selector & s);
374 
375 /// logical or between two selectors
376 ///
377 /// this will keep the objects that are selected by s1 or s2
378 Selector operator ||(const Selector & s1, const Selector & s2);
379 
380 
381 /// logical and between two selectors
382 ///
383 /// this will keep the objects that are selected by both s1 and s2
384 ///
385 /// watch out: for both s1 and s2, the selection is applied on the
386 /// original list of objects. For successive applications of two
387 /// selectors (convolution/multiplication) see the operator *
388 Selector operator&&(const Selector & s1, const Selector & s2);
389 
390 /// successive application of 2 selectors
391 ///
392 /// Apply the selector s2, then the selector s1.
393 ///
394 /// watch out: the operator * acts like an operator product i.e. does
395 /// not commute. The order of its arguments is therefore important.
396 /// Whenever they commute (in particluar, when they apply jet by
397 /// jet), this would have the same effect as the logical &&.
398 Selector operator*(const Selector & s1, const Selector & s2);
399 
400 
401 // selection with kinematic cuts
402 //----------------------------------------------------------------------
403 Selector SelectorPtMin(double ptmin); ///< select objects with pt >= ptmin
404 Selector SelectorPtMax(double ptmax); ///< select objects with pt <= ptmax
405 Selector SelectorPtRange(double ptmin, double ptmax); ///< select objects with ptmin <= pt <= ptmax
406 
407 Selector SelectorEtMin(double Etmin); ///< select objects with Et >= Etmin
408 Selector SelectorEtMax(double Etmax); ///< select objects with Et <= Etmax
409 Selector SelectorEtRange(double Etmin, double Etmax); ///< select objects with Etmin <= Et <= Etmax
410 
411 Selector SelectorEMin(double Emin); ///< select objects with E >= Emin
412 Selector SelectorEMax(double Emax); ///< select objects with E <= Emax
413 Selector SelectorERange(double Emin, double Emax); ///< select objects with Emin <= E <= Emax
414 
415 Selector SelectorMassMin(double Mmin); ///< select objects with Mass >= Mmin
416 Selector SelectorMassMax(double Mmax); ///< select objects with Mass <= Mmax
417 Selector SelectorMassRange(double Mmin, double Mmax); ///< select objects with Mmin <= Mass <= Mmax
418 
419 Selector SelectorRapMin(double rapmin); ///< select objects with rap >= rapmin
420 Selector SelectorRapMax(double rapmax); ///< select objects with rap <= rapmax
421 Selector SelectorRapRange(double rapmin, double rapmax); ///< select objects with rapmin <= rap <= rapmax
422 
423 Selector SelectorAbsRapMin(double absrapmin); ///< select objects with |rap| >= absrapmin
424 Selector SelectorAbsRapMax(double absrapmax); ///< select objects with |rap| <= absrapmax
425 Selector SelectorAbsRapRange(double absrapmin, double absrapmax); ///< select objects with absrapmin <= |rap| <= absrapmax
426 
427 Selector SelectorEtaMin(double etamin); ///< select objects with eta >= etamin
428 Selector SelectorEtaMax(double etamax); ///< select objects with eta <= etamax
429 Selector SelectorEtaRange(double etamin, double etamax); ///< select objects with etamin <= eta <= etamax
430 
431 Selector SelectorAbsEtaMin(double absetamin); ///< select objects with |eta| >= absetamin
432 Selector SelectorAbsEtaMax(double absetamax); ///< select objects with |eta| <= absetamax
433 Selector SelectorAbsEtaRange(double absetamin, double absetamax); ///< select objects with absetamin <= |eta| <= absetamax
434 
435 Selector SelectorPhiRange(double phimin, double phimax); ///< select objects with phimin <= phi <= phimax
436 
437 /// select objects with rapmin <= rap <= rapmax && phimin <= phi <= phimax
438 ///
439 /// Note that this is essentially a combination of SelectorRapRange
440 /// and SelectorPhiRange. We provide it as a Selector on its own in
441 /// order to use the known area (which would otherwise be lost by the &&
442 /// operator)
443 Selector SelectorRapPhiRange(double rapmin, double rapmax, double phimin, double phimax);
444 
445 /// select the n hardest objects
446 Selector SelectorNHardest(unsigned int n);
447 
448 
449 // Selectors that take (require) a reference jet.
450 //----------------------------------------------------------------------
451 
452 /// select objets within a distance 'radius' from the location of the
453 /// reference jet, set by Selector::set_reference(...)
454 Selector SelectorCircle(const double radius);
455 
456 /// select objets with distance from the reference jet is between 'radius_in'
457 /// and 'radius_out'; the reference jet is set by Selector::set_reference(...)
458 Selector SelectorDoughnut(const double radius_in, const double radius_out);
459 
460 /// select objets within a rapidity distance 'half_width' from the
461 /// location of the reference jet, set by Selector::set_reference(...)
462 Selector SelectorStrip(const double half_width);
463 
464 /// select objets within rapidity distance 'half_rap_width' from the
465 /// reference jet and azimuthal-angle distance within 'half_phi_width'; the
466 /// reference jet is set by Selector::set_reference(...)
467 Selector SelectorRectangle(const double half_rap_width, const double half_phi_width);
468 
469 
470 /// select objects that carry at least a fraction "fraction" of the
471 /// reference jet. The reference jet must have been set with
472 /// Selector::set_reference(...)
473 Selector SelectorPtFractionMin(double fraction);
474 
475 
476 // additional (mostly helper) selectors
477 //----------------------------------------------------------------------
478 
479 /// select PseudoJet with 0 momentum
481 
482 #ifndef __FJCORE__
483 /// select objects that are (or are only made of) ghosts.
484 /// PseudoJets for which has_area() are considered non-pure-ghost.
486 #endif // __FJCORE__
487 
488 /// @}
489 
490 FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh
491 
492 #endif // __FASTJET_SELECTOR_HH__
493 
Selector SelectorPtMax(double ptmax)
select objects with pt <= ptmax
Definition: Selector.cc:686
virtual void set_reference(const PseudoJet &)
sets the reference jet for the selector NB: "reference" is commented to avoid unused-variable compile...
Definition: Selector.hh:106
Selector SelectorEtaMin(double etamin)
select objects with eta >= etamin
Definition: Selector.cc:901
Selector SelectorEtRange(double Etmin, double Etmax)
select objects with Etmin <= Et <= Etmax
Definition: Selector.cc:716
Selector SelectorRectangle(const double half_rap_width, const double half_phi_width)
select objets within rapidity distance &#39;half_rap_width&#39; from the reference jet and azimuthal-angle di...
Definition: Selector.cc:1324
Selector SelectorPtFractionMin(double fraction)
select objects that carry at least a fraction "fraction" of the reference jet.
Definition: Selector.cc:1365
Selector SelectorRapPhiRange(double rapmin, double rapmax, double phimin, double phimax)
select objects with rapmin <= rap <= rapmax && phimin <= phi <= phimax
Definition: Selector.cc:1006
Selector SelectorAbsRapMin(double absrapmin)
select objects with |rap| >= absrapmin
Definition: Selector.cc:875
Selector SelectorIsZero()
select PseudoJet with 0 momentum
Definition: Selector.cc:1392
Selector SelectorNHardest(unsigned int n)
select the n hardest objects
Definition: Selector.cc:1074
Selector SelectorRapMin(double rapmin)
select objects with rap >= rapmin
Definition: Selector.cc:820
Selector SelectorEtaRange(double etamin, double etamax)
select objects with etamin <= eta <= etamax
Definition: Selector.cc:911
bool is_geometric() const
returns true if it is a geometric selector (i.e.
Definition: Selector.hh:243
virtual double known_area() const
if it has a computable area, return it
Definition: Selector.hh:139
virtual void terminator(std::vector< const PseudoJet *> &jets) const
For each jet that does not pass the cuts, this routine sets the pointer to 0.
Definition: Selector.hh:84
virtual bool is_geometric() const
check if it is a geometric selector (i.e.
Definition: Selector.hh:130
Selector SelectorEtMax(double Etmax)
select objects with Et <= Etmax
Definition: Selector.cc:711
virtual ~Selector()
dummy virtual dtor
Definition: Selector.hh:175
const SharedPtr< SelectorWorker > & worker() const
returns a (reference to) the underlying worker&#39;s shared pointer
Definition: Selector.hh:277
Selector operator*(const Selector &s1, const Selector &s2)
successive application of 2 selectors
Definition: Selector.cc:559
Selector SelectorRapRange(double rapmin, double rapmax)
select objects with rapmin <= rap <= rapmax
Definition: Selector.cc:830
class that gets thrown when the area is requested from a Selector for which the area is not meaningfu...
Definition: Selector.hh:316
Selector SelectorAbsRapMax(double absrapmax)
select objects with |rap| <= absrapmax
Definition: Selector.cc:880
virtual bool takes_reference() const
returns true if the worker is defined with respect to a reference jet
Definition: Selector.hh:102
virtual SelectorWorker * copy()
return a copy of the current object.
Definition: Selector.hh:114
Selector operator||(const Selector &s1, const Selector &s2)
logical or between two selectors
Definition: Selector.cc:519
bool has_finite_area() const
returns true if it has a meaningful and finite area (i.e.
Definition: Selector.hh:250
Selector SelectorAbsEtaMax(double absetamax)
select objects with |eta| <= absetamax
Definition: Selector.cc:932
class that gets thrown when a Selector is applied despite it not having a valid underlying worker...
Definition: Selector.hh:309
bool takes_reference() const
returns true if this can be applied jet by jet
Definition: Selector.hh:287
class for holding a range definition specification, given by limits on rapidity and azimuth...
void get_rapidity_extent(double &rapmin, double &rapmax) const
returns the rapidity range for which it may return "true"
Definition: Selector.hh:232
Selector SelectorAbsEtaMin(double absetamin)
select objects with |eta| >= absetamin
Definition: Selector.cc:927
virtual bool has_known_area() const
check if it has an analytically computable area
Definition: Selector.hh:136
Selector SelectorStrip(const double half_width)
select objets within a rapidity distance &#39;half_width&#39; from the location of the reference jet...
Definition: Selector.cc:1267
const SelectorWorker * validated_worker() const
returns a worker if there is a valid one, otherwise throws an InvalidWorker error ...
Definition: Selector.hh:280
Selector SelectorPtMin(double ptmin)
select objects with pt >= ptmin
Definition: Selector.cc:681
Selector SelectorAbsRapRange(double rapmin, double rapmax)
select objects with absrapmin <= |rap| <= absrapmax
Definition: Selector.cc:885
bool applies_jet_by_jet() const
returns true if this can be applied jet by jet
Definition: Selector.hh:215
Selector SelectorAbsEtaRange(double absetamin, double absetamax)
select objects with absetamin <= |eta| <= absetamax
Definition: Selector.cc:937
Selector SelectorPtRange(double ptmin, double ptmax)
select objects with ptmin <= pt <= ptmax
Definition: Selector.cc:691
Selector()
default constructor produces a Selector whose action is undefined (any attempt to use it will lead to...
Definition: Selector.hh:153
Selector SelectorEtMin(double Etmin)
select objects with Et >= Etmin
Definition: Selector.cc:706
bool pass(const PseudoJet &jet) const
return true if the jet passes the selection
Definition: Selector.hh:178
Selector SelectorEMin(double Emin)
select objects with E >= Emin
Definition: Selector.cc:731
base class corresponding to errors that can be thrown by FastJet
Definition: Error.hh:47
Selector SelectorMassMax(double mmax)
select objects with Mass <= Mmax
Definition: Selector.cc:761
Selector SelectorEMax(double Emax)
select objects with E <= Emax
Definition: Selector.cc:736
Selector SelectorPhiRange(double phimin, double phimax)
select objects with phimin <= phi <= phimax
Definition: Selector.cc:984
Selector SelectorRapMax(double rapmax)
select objects with rap <= rapmax
Definition: Selector.cc:825
Selector(SelectorWorker *worker_in)
constructor that causes the Selector to use the supplied worker
Definition: Selector.hh:159
void _copy_worker_if_needed()
Helper for copying selector workers if needed.
Definition: Selector.hh:339
an implementation of C++0x shared pointers (or boost&#39;s)
Definition: SharedPtr.hh:121
Selector SelectorCircle(const double radius)
select objets within a distance &#39;radius&#39; from the location of the reference jet, set by Selector::set...
Definition: Selector.cc:1154
virtual ~SelectorWorker()
default dtor
Definition: Selector.hh:65
Selector operator &&(const Selector &s1, const Selector &s2)
logical and between two selectors
Definition: Selector.cc:443
const Selector & set_reference(const PseudoJet &reference)
set the reference jet for this Selector
Definition: Selector.hh:292
Class that encodes information about cuts and other selection criteria that can be applied to PseudoJ...
Definition: Selector.hh:149
Selector SelectorDoughnut(const double radius_in, const double radius_out)
select objets with distance from the reference jet is between &#39;radius_in&#39; and &#39;radius_out&#39;; the refer...
Definition: Selector.cc:1213
Selector SelectorMassMin(double mmin)
select objects with Mass >= Mmin
Definition: Selector.cc:756
std::string description() const
returns a textual description of the selector
Definition: Selector.hh:237
virtual bool applies_jet_by_jet() const
returns true if this can be applied jet by jet
Definition: Selector.hh:91
bool operator()(const PseudoJet &jet) const
an operator way of knowing whether a given jet passes the selection or not
Definition: Selector.hh:186
Selector SelectorIsPureGhost()
select objects that are (or are only made of) ghosts.
Definition: Selector.cc:1420
default selector worker is an abstract virtual base class
Definition: Selector.hh:59
Selector SelectorERange(double Emin, double Emax)
select objects with Emin <= E <= Emax
Definition: Selector.cc:741
virtual void get_rapidity_extent(double &rapmin, double &rapmax) const
returns the rapidity range for which it may return "true"
Definition: Selector.hh:123
virtual void nullify_non_selected(std::vector< const PseudoJet *> &jets) const
For each jet that does not pass the cuts, this routine sets the pointer to 0.
Definition: Selector.hh:227
virtual std::string description() const
returns a description of the worker
Definition: Selector.hh:94
Class to contain pseudojets, including minimal information of use to jet-clustering routines...
Definition: PseudoJet.hh:67
Selector SelectorMassRange(double mmin, double mmax)
select objects with Mmin <= Mass <= Mmax
Definition: Selector.cc:766
Selector SelectorEtaMax(double etamax)
select objects with eta <= etamax
Definition: Selector.cc:906
Selector operator!(const Selector &s)
logical not applied on a selector
Definition: Selector.cc:333