FastJet 3.0.0
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00001 //STARTHEADER 00002 // $Id: fastjet_timing_plugins.cc 2577 2011-09-13 15:11:38Z salam $ 00003 // 00004 // Copyright (c) 2005-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez 00005 // 00006 //---------------------------------------------------------------------- 00007 // This file is part of FastJet. 00008 // 00009 // FastJet is free software; you can redistribute it and/or modify 00010 // it under the terms of the GNU General Public License as published by 00011 // the Free Software Foundation; either version 2 of the License, or 00012 // (at your option) any later version. 00013 // 00014 // The algorithms that underlie FastJet have required considerable 00015 // development and are described in hep-ph/0512210. If you use 00016 // FastJet as part of work towards a scientific publication, please 00017 // include a citation to the FastJet paper. 00018 // 00019 // FastJet is distributed in the hope that it will be useful, 00020 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00021 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00022 // GNU General Public License for more details. 00023 // 00024 // You should have received a copy of the GNU General Public License 00025 // along with FastJet. If not, see <http://www.gnu.org/licenses/>. 00026 //---------------------------------------------------------------------- 00027 //ENDHEADER 00028 00029 00030 //---------------------------------------------------------------------- 00031 /// fastjet_timing.cc: Program to help time and test the fastjet package 00032 /// 00033 /// It reads files containing multiple events in the format 00034 /// p1x p1y p1z E1 00035 /// p2x p2y p2z E2 00036 /// ... 00037 /// #END 00038 /// 00039 /// An example input file containing 10 events is included as 00040 /// data/Pythia-PtMin1000-LHC-10ev.dat 00041 /// 00042 /// Usage: 00043 /// fastjet_timing [-strategy NUMBER] [-repeat nrepeats] [-massive] \ 00044 /// [-combine nevents] [-r Rparameter] [-incl ptmin] [...] \ 00045 /// < data_file 00046 /// 00047 /// where the clustering can be repeated to aid timing and multiple 00048 /// events can be combined to get to larger multiplicities. Some options: 00049 /// 00050 /// Options for reading 00051 /// ------------------- 00052 /// 00053 /// -nev n number of events to run 00054 /// 00055 /// -combine n for combining multiple events from the data file in order 00056 /// to get a single high-multipicity event to run. 00057 /// 00058 /// -massless read in only the 3-momenta and deduce energies assuming 00059 /// that particles are massless 00060 /// 00061 /// -dense adds dense ghost coverage 00062 /// 00063 /// -repeat n repeats each event n times 00064 /// 00065 /// Output Options 00066 /// -------------- 00067 /// 00068 /// -incl ptmin output of all inclusive jets with pt > ptmin is obtained 00069 /// with the -incl option. 00070 /// 00071 /// -excld dcut output of all exclusive jets as obtained in a clustering 00072 /// with dcut 00073 /// 00074 /// -excly ycut output of all exclusive jets as obtained in a clustering 00075 /// with ycut 00076 /// 00077 /// -excln n output of clustering to n exclusive jets 00078 /// 00079 /// -ee-print print things as px,py,pz,E 00080 /// 00081 /// -get-all-dij print out all dij values 00082 /// -get-all-yij print out all yij values 00083 /// 00084 /// -const show jet constituents (works with excl jets) 00085 /// 00086 /// -write for writing out detailed clustering sequence (valuable 00087 /// for testing purposes) 00088 /// 00089 /// -unique_write writes out the sequence of dij's according to the 00090 /// "unique_history_order" (useful for verifying consistency 00091 /// between different clustering strategies). 00092 /// 00093 /// -root file sends output to file that can be read in with the script in 00094 /// root/ so as to show a lego-plot of the event 00095 /// 00096 /// -cones show extra info about internal steps for SISCone 00097 /// 00098 /// -area calculate areas. Additional options include 00099 /// -area:active 00100 /// -area:passive 00101 /// -area:explicit 00102 /// -area:voronoi Rfact 00103 /// -area:repeat nrepeat 00104 /// -ghost-area area 00105 /// -ghost-maxrap maxrap 00106 /// -area:fj2 place ghosts as in fj2 00107 /// 00108 /// -bkgd calculate the background density. Additional options include 00109 /// -bkgd:csab use the old ClusterSequenceAreaBase methods 00110 /// -bkgd:jetmedian use the new JetMedianBackgroundEstimator class 00111 /// -bkgd:fj2 force jetmedian to calculate sigma as in fj2 00112 /// -bkgd:gridmedian use GridMedianBackgroundEstimator with grid up to ghost_maxrap-ktR and grid spacing of 2ktR 00113 /// 00114 /// Algorithms 00115 /// ---------- 00116 /// -kt switch to the longitudinally invariant kt algorithm 00117 /// Note: this is the default one. 00118 /// 00119 /// -cam switch to the inclusive Cambridge/Aachen algorithm -- 00120 /// note that the option -excld dcut provides a clustering 00121 /// up to the dcut which is the minimum squared 00122 /// distance between any pair of jets. 00123 /// 00124 /// -antikt switch to the anti-kt clustering algorithm 00125 /// 00126 /// -genkt switch to the genkt algorithm 00127 /// you can provide the parameter of the alg as an argument to 00128 /// -genkt (1 by default) 00129 /// 00130 /// -eekt switch to the e+e- kt algorithm 00131 /// 00132 /// -eegenkt switch to the genkt algorithm 00133 /// you can provide the parameter of the alg as an argument to 00134 /// -ee_genkt (1 by default) 00135 /// 00136 /// plugins (don't delete this line) 00137 /// 00138 /// -pxcone switch to the PxCone jet algorithm 00139 /// 00140 /// -siscone switch to the SISCone jet algorithm (seedless cones) 00141 /// -sisconespheri switch to the Spherical SISCone jet algorithm (seedless cones) 00142 /// 00143 /// -midpoint switch to CDF's midpoint code 00144 /// -jetclu switch to CDF's jetclu code 00145 /// 00146 /// -d0runipre96cone switch to the D0RunIpre96Cone plugin 00147 /// -d0runicone switch to the D0RunICone plugin 00148 /// 00149 /// -d0runiicone switch to D0's run II midpoint cone 00150 /// 00151 /// -trackjet switch to the TrackJet plugin 00152 /// 00153 /// -atlascone switch to the ATLASCone plugin 00154 /// 00155 /// -eecambridge switch to the EECambridge plugin 00156 /// 00157 /// -jade switch to the Jade plugin 00158 /// 00159 /// -cmsiterativecone switch to the CMSIterativeCone plugin 00160 /// 00161 /// -gridjet switch to the GridJet plugin 00162 /// 00163 /// end of plugins (don't delete this line) 00164 /// 00165 /// 00166 /// Options for running algs 00167 /// ------------------------ 00168 /// 00169 /// -r sets the radius of the jet algorithm (default = 1.0) 00170 /// 00171 /// -overlap | -f sets the overlap fraction in cone algs with split-merge 00172 /// 00173 /// -seed sets the seed threshold 00174 /// 00175 /// -strategy N indicate stratgey from the enum fastjet::Strategy (see 00176 /// fastjet/JetDefinition.hh). 00177 /// 00178 00179 00180 #include "fastjet/ClusterSequenceArea.hh" 00181 #include "fastjet/tools/JetMedianBackgroundEstimator.hh" 00182 #include "fastjet/tools/GridMedianBackgroundEstimator.hh" 00183 #include<iostream> 00184 #include<sstream> 00185 #include<fstream> 00186 #include<valarray> 00187 #include<vector> 00188 #include <cstdlib> 00189 #include<cstddef> // for size_t 00190 #include "CmdLine.hh" 00191 00192 // get info on how fastjet was configured 00193 #include "fastjet/config.h" 00194 00195 // include the installed plugins (don't delete this line) 00196 #ifdef FASTJET_ENABLE_PLUGIN_SISCONE 00197 #include "fastjet/SISConePlugin.hh" 00198 #include "fastjet/SISConeSphericalPlugin.hh" 00199 #endif 00200 #ifdef FASTJET_ENABLE_PLUGIN_CDFCONES 00201 #include "fastjet/CDFMidPointPlugin.hh" 00202 #include "fastjet/CDFJetCluPlugin.hh" 00203 #endif 00204 #ifdef FASTJET_ENABLE_PLUGIN_PXCONE 00205 #include "fastjet/PxConePlugin.hh" 00206 #endif 00207 #ifdef FASTJET_ENABLE_PLUGIN_D0RUNIICONE 00208 #include "fastjet/D0RunIIConePlugin.hh" 00209 #endif 00210 #ifdef FASTJET_ENABLE_PLUGIN_TRACKJET 00211 #include "fastjet/TrackJetPlugin.hh" 00212 #endif 00213 #ifdef FASTJET_ENABLE_PLUGIN_ATLASCONE 00214 #include "fastjet/ATLASConePlugin.hh" 00215 #endif 00216 #ifdef FASTJET_ENABLE_PLUGIN_EECAMBRIDGE 00217 #include "fastjet/EECambridgePlugin.hh" 00218 #endif 00219 #ifdef FASTJET_ENABLE_PLUGIN_JADE 00220 #include "fastjet/JadePlugin.hh" 00221 #endif 00222 #ifdef FASTJET_ENABLE_PLUGIN_CMSITERATIVECONE 00223 #include "fastjet/CMSIterativeConePlugin.hh" 00224 #endif 00225 #ifdef FASTJET_ENABLE_PLUGIN_D0RUNICONE 00226 #include "fastjet/D0RunIpre96ConePlugin.hh" 00227 #include "fastjet/D0RunIConePlugin.hh" 00228 #endif 00229 #ifdef FASTJET_ENABLE_PLUGIN_GRIDJET 00230 #include "fastjet/GridJetPlugin.hh" 00231 #endif 00232 // end of installed plugins inclusion (don't delete this line) 00233 00234 using namespace std; 00235 00236 // to avoid excessive typing, define an abbreviation for the 00237 // fastjet namespace 00238 namespace fj = fastjet; 00239 00240 inline double pow2(const double x) {return x*x;} 00241 00242 // pretty print the jets and their subjets 00243 void print_jets_and_sub (const vector<fj::PseudoJet> & jets, double dcut); 00244 00245 string rootfile; 00246 CmdLine * cmdline_p; 00247 00248 bool do_areas; 00249 00250 /// sort and pretty print jets, with exact behaviour depending on 00251 /// whether ee_print is true or not 00252 bool ee_print = false; 00253 void print_jets(const vector<fj::PseudoJet> & jets, bool show_const = false); 00254 00255 void is_unavailable(const string & algname) { 00256 cerr << algname << " requested, but not available for this compilation" << endl; 00257 exit(0); 00258 } 00259 00260 00261 /// a program to test and time a range of algorithms as implemented or 00262 /// wrapped in fastjet 00263 int main (int argc, char ** argv) { 00264 00265 CmdLine cmdline(argc,argv); 00266 cmdline_p = &cmdline; 00267 // allow the use to specify the fj::Strategy either through the 00268 // -clever or the -strategy options (both will take numerical 00269 // values); the latter will override the former. 00270 fj::Strategy strategy = fj::Strategy(cmdline.int_val("-strategy", 00271 cmdline.int_val("-clever", fj::Best))); 00272 int repeat = cmdline.int_val("-repeat",1); 00273 int combine = cmdline.int_val("-combine",1); 00274 bool write = cmdline.present("-write"); 00275 bool unique_write = cmdline.present("-unique_write"); 00276 bool hydjet = cmdline.present("-hydjet"); 00277 double ktR = cmdline.double_val("-r",1.0); 00278 ktR = cmdline.double_val("-R",ktR); // allow -r and -R 00279 double inclkt = cmdline.double_val("-incl",-1.0); 00280 int excln = cmdline.int_val ("-excln",-1); 00281 double excld = cmdline.double_val("-excld",-1.0); 00282 double excly = cmdline.double_val("-excly",-1.0); 00283 ee_print = cmdline.present("-ee-print"); 00284 bool get_all_dij = cmdline.present("-get-all-dij"); 00285 bool get_all_yij = cmdline.present("-get-all-yij"); 00286 double subdcut = cmdline.double_val("-subdcut",-1.0); 00287 double etamax = cmdline.double_val("-etamax",1.0e305); 00288 bool show_constituents = cmdline.present("-const"); 00289 bool massless = cmdline.present("-massless"); 00290 int nev = cmdline.int_val("-nev",1); 00291 bool add_dense_coverage = cmdline.present("-dense"); 00292 double ghost_maxrap = cmdline.value("-ghost-maxrap",5.0); 00293 do_areas = cmdline.present("-area"); 00294 fj::AreaDefinition area_def; 00295 if (do_areas) { 00296 assert(!write); // it's incompatible 00297 fj::GhostedAreaSpec ghost_spec(ghost_maxrap, 00298 cmdline.value("-area:repeat", 1), 00299 cmdline.value("-ghost-area", 0.01)); 00300 if (cmdline.present("-area:fj2")) ghost_spec.set_fj2_placement(true); 00301 if (cmdline.present("-area:explicit")) { 00302 area_def = fj::AreaDefinition(fj::active_area_explicit_ghosts, ghost_spec); 00303 } else if (cmdline.present("-area:passive")) { 00304 area_def = fj::AreaDefinition(fj::passive_area, ghost_spec); 00305 } else if (cmdline.present("-area:voronoi")) { 00306 double Rfact = cmdline.value<double>("-area:voronoi"); 00307 area_def = fj::AreaDefinition(fj::voronoi_area, 00308 fj::VoronoiAreaSpec(Rfact)); 00309 } else { 00310 cmdline.present("-area:active"); // allow, but do not require, arg 00311 area_def = fj::AreaDefinition(fj::active_area, ghost_spec); 00312 } 00313 } 00314 bool do_bkgd = cmdline.present("-bkgd"); // background estimation 00315 bool do_bkgd_csab = false, do_bkgd_jetmedian = false, do_bkgd_fj2 = false; 00316 bool do_bkgd_gridmedian = false; 00317 fj::Selector bkgd_range; 00318 if (do_bkgd) { 00319 bkgd_range = fj::SelectorAbsRapMax(ghost_maxrap - ktR); 00320 if (cmdline.present("-bkgd:csab")) {do_bkgd_csab = true;} 00321 else if (cmdline.present("-bkgd:jetmedian")) {do_bkgd_jetmedian = true; 00322 do_bkgd_fj2 = cmdline.present("-bkgd:fj2"); 00323 } else if (cmdline.present("-bkgd:gridmedian")) {do_bkgd_gridmedian = true; 00324 } else { 00325 throw fj::Error("with the -bkgd option, some particular background must be specified (csab or jetmedian)"); 00326 } 00327 assert(do_areas || do_bkgd_gridmedian); 00328 } 00329 00330 bool show_cones = cmdline.present("-cones"); // only works for siscone 00331 00332 // for cone algorithms 00333 // allow -f and -overlap 00334 double overlap_threshold = cmdline.double_val("-overlap",0.5); 00335 overlap_threshold = cmdline.double_val("-f",overlap_threshold); 00336 double seed_threshold = cmdline.double_val("-seed",1.0); 00337 00338 // for ee algorithms, allow to specify ycut 00339 double ycut = cmdline.double_val("-ycut",0.08); 00340 00341 // for printing jets to a file for reading by root 00342 rootfile = cmdline.value<string>("-root",""); 00343 00344 // out default scheme is the E_scheme 00345 fj::RecombinationScheme scheme = fj::E_scheme; 00346 00347 // The following option causes the Cambridge algo to be used. 00348 // Note that currently the only output that works sensibly here is 00349 // "-incl 0" 00350 fj::JetDefinition jet_def; 00351 if (cmdline.present("-cam") || cmdline.present("-CA")) { 00352 jet_def = fj::JetDefinition(fj::cambridge_algorithm, ktR, scheme, strategy); 00353 } else if (cmdline.present("-antikt")) { 00354 jet_def = fj::JetDefinition(fj::antikt_algorithm, ktR, scheme, strategy); 00355 } else if (cmdline.present("-genkt")) { 00356 double p = cmdline.value<double>("-genkt"); 00357 jet_def = fj::JetDefinition(fj::genkt_algorithm, ktR, p, scheme, strategy); 00358 } else if (cmdline.present("-eekt")) { 00359 jet_def = fj::JetDefinition(fj::ee_kt_algorithm); 00360 } else if (cmdline.present("-eegenkt")) { 00361 double p = cmdline.value<double>("-eegenkt"); 00362 jet_def = fj::JetDefinition(fj::ee_genkt_algorithm, ktR, p, scheme, strategy); 00363 00364 // checking if one asks to run a plugin (don't delete this line) 00365 } else if (cmdline.present("-midpoint")) { 00366 #ifdef FASTJET_ENABLE_PLUGIN_CDFCONES 00367 typedef fj::CDFMidPointPlugin MPPlug; // for brevity 00368 double cone_area_fraction = 1.0; 00369 int max_pair_size = 2; 00370 int max_iterations = 100; 00371 MPPlug::SplitMergeScale sm_scale = MPPlug::SM_pt; 00372 if (cmdline.present("-sm-pttilde")) sm_scale = MPPlug::SM_pttilde; 00373 if (cmdline.present("-sm-pt")) sm_scale = MPPlug::SM_pt; // default 00374 if (cmdline.present("-sm-mt")) sm_scale = MPPlug::SM_mt; 00375 if (cmdline.present("-sm-Et")) sm_scale = MPPlug::SM_Et; 00376 jet_def = fj::JetDefinition( new fj::CDFMidPointPlugin ( 00377 seed_threshold, ktR, 00378 cone_area_fraction, max_pair_size, 00379 max_iterations, overlap_threshold, 00380 sm_scale)); 00381 #else // FASTJET_ENABLE_PLUGIN_CDFCONES 00382 is_unavailable("midpoint"); 00383 #endif // FASTJET_ENABLE_PLUGIN_CDFCONES 00384 } else if (cmdline.present("-pxcone")) { 00385 #ifdef FASTJET_ENABLE_PLUGIN_PXCONE 00386 double min_jet_energy = 5.0; 00387 jet_def = fj::JetDefinition( new fj::PxConePlugin ( 00388 ktR, min_jet_energy, 00389 overlap_threshold)); 00390 #else // FASTJET_ENABLE_PLUGIN_PXCONE 00391 is_unavailable("pxcone"); 00392 #endif // FASTJET_ENABLE_PLUGIN_PXCONE 00393 } else if (cmdline.present("-jetclu")) { 00394 #ifdef FASTJET_ENABLE_PLUGIN_CDFCONES 00395 jet_def = fj::JetDefinition( new fj::CDFJetCluPlugin ( 00396 ktR, overlap_threshold, seed_threshold)); 00397 #else // FASTJET_ENABLE_PLUGIN_CDFCONES 00398 is_unavailable("pxcone"); 00399 #endif // FASTJET_ENABLE_PLUGIN_CDFCONES 00400 } else if (cmdline.present("-siscone") || cmdline.present("-sisconespheri")) { 00401 #ifdef FASTJET_ENABLE_PLUGIN_SISCONE 00402 typedef fj::SISConePlugin SISPlug; // for brevity 00403 int npass = cmdline.value("-npass",0); 00404 if (cmdline.present("-siscone")) { 00405 double sisptmin = cmdline.value("-sisptmin",0.0); 00406 SISPlug * plugin = new SISPlug (ktR, overlap_threshold,npass,sisptmin); 00407 if (cmdline.present("-sm-pt")) plugin->set_split_merge_scale(SISPlug::SM_pt); 00408 if (cmdline.present("-sm-mt")) plugin->set_split_merge_scale(SISPlug::SM_mt); 00409 if (cmdline.present("-sm-Et")) plugin->set_split_merge_scale(SISPlug::SM_Et); 00410 if (cmdline.present("-sm-pttilde")) plugin->set_split_merge_scale(SISPlug::SM_pttilde); 00411 // cause it to use the jet-definition's own recombiner 00412 plugin->set_use_jet_def_recombiner(true); 00413 jet_def = fj::JetDefinition(plugin); 00414 } else { 00415 double sisEmin = cmdline.value("-sisEmin",0.0); 00416 fj::SISConeSphericalPlugin * plugin = 00417 new fj::SISConeSphericalPlugin(ktR, overlap_threshold,npass,sisEmin); 00418 if (cmdline.present("-ghost-sep")) { 00419 plugin->set_ghost_separation_scale(cmdline.value<double>("-ghost-sep")); 00420 } 00421 jet_def = fj::JetDefinition(plugin); 00422 } 00423 #else // FASTJET_ENABLE_PLUGIN_SISCONE 00424 is_unavailable("siscone"); 00425 #endif // FASTJET_ENABLE_PLUGIN_SISCONE 00426 } else if (cmdline.present("-d0runiicone")) { 00427 #ifdef FASTJET_ENABLE_PLUGIN_D0RUNIICONE 00428 double min_jet_Et = 6.0; // was 8 GeV in earlier work 00429 jet_def = fj::JetDefinition(new fj::D0RunIIConePlugin(ktR,min_jet_Et)); 00430 #else // FASTJET_ENABLE_PLUGIN_D0RUNIICONE 00431 is_unavailable("D0RunIICone"); 00432 #endif // FASTJET_ENABLE_PLUGIN_D0RUNIICONE 00433 } else if (cmdline.present("-trackjet")) { 00434 #ifdef FASTJET_ENABLE_PLUGIN_TRACKJET 00435 jet_def = fj::JetDefinition(new fj::TrackJetPlugin(ktR)); 00436 #else // FASTJET_ENABLE_PLUGIN_TRACKJET 00437 is_unavailable("TrackJet"); 00438 #endif // FASTJET_ENABLE_PLUGIN_TRACKJET 00439 } else if (cmdline.present("-atlascone")) { 00440 #ifdef FASTJET_ENABLE_PLUGIN_ATLASCONE 00441 jet_def = fj::JetDefinition(new fj::ATLASConePlugin(ktR)); 00442 #else // FASTJET_ENABLE_PLUGIN_ATLASCONE 00443 is_unavailable("ATLASCone"); 00444 #endif // FASTJET_ENABLE_PLUGIN_ATLASCONE 00445 } else if (cmdline.present("-eecambridge")) { 00446 #ifdef FASTJET_ENABLE_PLUGIN_EECAMBRIDGE 00447 jet_def = fj::JetDefinition(new fj::EECambridgePlugin(ycut)); 00448 #else // FASTJET_ENABLE_PLUGIN_EECAMBRIDGE 00449 is_unavailable("EECambridge"); 00450 #endif // FASTJET_ENABLE_PLUGIN_EECAMBRIDGE 00451 } else if (cmdline.present("-jade")) { 00452 #ifdef FASTJET_ENABLE_PLUGIN_JADE 00453 jet_def = fj::JetDefinition(new fj::JadePlugin()); 00454 #else // FASTJET_ENABLE_PLUGIN_JADE 00455 is_unavailable("Jade"); 00456 #endif // FASTJET_ENABLE_PLUGIN_JADE 00457 } else if (cmdline.present("-cmsiterativecone")) { 00458 #ifdef FASTJET_ENABLE_PLUGIN_CMSITERATIVECONE 00459 jet_def = fj::JetDefinition(new fj::CMSIterativeConePlugin(ktR,seed_threshold)); 00460 #else // FASTJET_ENABLE_PLUGIN_CMSITERATIVECONE 00461 is_unavailable("CMSIterativeCone"); 00462 #endif // FASTJET_ENABLE_PLUGIN_CMSITERATIVECONE 00463 } else if (cmdline.present("-d0runipre96cone")) { 00464 #ifdef FASTJET_ENABLE_PLUGIN_D0RUNICONE 00465 jet_def = fj::JetDefinition(new fj::D0RunIpre96ConePlugin(ktR, seed_threshold, overlap_threshold)); 00466 #else // FASTJET_ENABLE_PLUGIN_D0RUNICONE 00467 is_unavailable("D0RunICone"); 00468 #endif // FASTJET_ENABLE_PLUGIN_D0RUNICONE 00469 } else if (cmdline.present("-d0runicone")) { 00470 #ifdef FASTJET_ENABLE_PLUGIN_D0RUNICONE 00471 jet_def = fj::JetDefinition(new fj::D0RunIConePlugin(ktR, seed_threshold, overlap_threshold)); 00472 #else // FASTJET_ENABLE_PLUGIN_D0RUNICONE 00473 is_unavailable("D0RunICone"); 00474 #endif // FASTJET_ENABLE_PLUGIN_D0RUNICONE 00475 } else if (cmdline.present("-gridjet")) { 00476 #ifdef FASTJET_ENABLE_PLUGIN_GRIDJET 00477 // we want a grid_ymax of 5.0, but when using R=0.4 (i.e. grid 00478 // spacing of 0.8), this leads to 12.5 grid cells; depending on 00479 // whether this is 12.499999999999 or 12.5000000....1 this gets 00480 // converted either to 12 or 13, making the results sensitive to 00481 // rounding errors. 00482 // 00483 // Instead we therefore take 4.9999999999, which avoids this problem. 00484 double grid_ymax = 4.9999999999; 00485 jet_def = fj::JetDefinition(new fj::GridJetPlugin(grid_ymax, ktR*2.0)); 00486 #else // FASTJET_ENABLE_PLUGIN_GRIDJET 00487 is_unavailable("GridJet"); 00488 #endif // FASTJET_ENABLE_PLUGIN_GRIDJET 00489 // end of checking if one asks to run a plugin (don't delete this line) 00490 } else { 00491 cmdline.present("-kt"); // kt is default, but allow user to specify it too [and ignore return value!] 00492 jet_def = fj::JetDefinition(fj::kt_algorithm, ktR, strategy); 00493 } 00494 00495 00496 00497 if (!cmdline.all_options_used()) {cerr << 00498 "Error: some options were not recognized"<<endl; 00499 exit(-1);} 00500 00501 00502 for (int iev = 0; iev < nev; iev++) { 00503 vector<fj::PseudoJet> jets; 00504 vector<fj::PseudoJet> particles; 00505 string line; 00506 int ndone = 0; 00507 while (getline(cin, line)) { 00508 //cout << line<<endl; 00509 istringstream linestream(line); 00510 if (line == "#END") { 00511 ndone += 1; 00512 if (ndone == combine) {break;} 00513 } 00514 if (line.substr(0,1) == "#") {continue;} 00515 valarray<double> fourvec(4); 00516 if (hydjet) { 00517 // special reading from hydjet.txt event record (though actually 00518 // this is supposed to be a standard pythia event record, so 00519 // being able to read from it is perhaps not so bad an idea...) 00520 int ii, istat,id,m1,m2,d1,d2; 00521 double mass; 00522 linestream >> ii>> istat >> id >> m1 >> m2 >> d1 >> d2 00523 >> fourvec[0] >> fourvec[1] >> fourvec[2] >> mass; 00524 // current file contains mass of particle as 4th entry 00525 if (istat == 1) { 00526 fourvec[3] = sqrt(+pow2(fourvec[0])+pow2(fourvec[1]) 00527 +pow2(fourvec[2])+pow2(mass)); 00528 } 00529 } else { 00530 if (massless) { 00531 linestream >> fourvec[0] >> fourvec[1] >> fourvec[2]; 00532 fourvec[3] = sqrt(pow2(fourvec[0])+pow2(fourvec[1])+pow2(fourvec[2]));} 00533 else { 00534 linestream >> fourvec[0] >> fourvec[1] >> fourvec[2] >> fourvec[3]; 00535 } 00536 } 00537 fj::PseudoJet psjet(fourvec); 00538 if (abs(psjet.rap() < etamax)) {particles.push_back(psjet);} 00539 } 00540 00541 // add a fake underlying event which is very soft, uniformly distributed 00542 // in eta,phi so as to allow one to reconstruct the area that is associated 00543 // with each jet. 00544 if (add_dense_coverage) { 00545 fj::GhostedAreaSpec ghosted_area_spec(ghost_maxrap); 00546 //fj::GhostedAreaSpec ghosted_area_spec(-2.0,4.0); // asymmetric range 00547 // for plots, reduce the scatter default of 1, to avoid "holes" 00548 // in the subsequent calorimeter view 00549 ghosted_area_spec.set_grid_scatter(0.5); 00550 ghosted_area_spec.add_ghosts(particles); 00551 //----- old code ------------------ 00552 // srand(2); 00553 // int nphi = 60; 00554 // int neta = 100; 00555 // double kt = 1e-1; 00556 // for (int iphi = 0; iphi<nphi; iphi++) { 00557 // for (int ieta = -neta; ieta<neta+1; ieta++) { 00558 // double phi = (iphi+0.5) * (fj::twopi/nphi) + rand()*0.001/RAND_MAX; 00559 // double eta = ieta * (10.0/neta) + rand()*0.001/RAND_MAX; 00560 // kt = 1e-20*(1+rand()*0.1/RAND_MAX); 00561 // double pminus = kt*exp(-eta); 00562 // double pplus = kt*exp(+eta); 00563 // double px = kt*sin(phi); 00564 // double py = kt*cos(phi); 00565 // //cout << kt<<" "<<eta<<" "<<phi<<"\n"; 00566 // fj::PseudoJet mom(px,py,0.5*(pplus-pminus),0.5*(pplus+pminus)); 00567 // particles.push_back(mom); 00568 // } 00569 // } 00570 } 00571 00572 for (int irepeat = 0; irepeat < repeat ; irepeat++) { 00573 int nparticles = particles.size(); 00574 try { 00575 auto_ptr<fj::ClusterSequence> clust_seq; 00576 if (do_areas) { 00577 clust_seq.reset(new fj::ClusterSequenceArea(particles,jet_def,area_def)); 00578 } else { 00579 clust_seq.reset(new fj::ClusterSequence(particles,jet_def,write)); 00580 } 00581 if (irepeat != 0) {continue;} 00582 cout << "iev "<<iev<< ": number of particles = "<< nparticles << endl; 00583 cout << "strategy used = "<< clust_seq->strategy_string()<< endl; 00584 if (iev == 0) cout << "Jet Definition: " << jet_def.description() << " (" << fj::fastjet_version_string() << ")" << endl; 00585 if (do_areas && iev == 0) cout << "Area definition: " << area_def.description() << endl; 00586 00587 // now provide some nice output... 00588 if (inclkt >= 0.0) { 00589 vector<fj::PseudoJet> jets = sorted_by_pt(clust_seq->inclusive_jets(inclkt)); 00590 print_jets(jets, show_constituents); 00591 00592 } 00593 00594 if (excln > 0) { 00595 cout << "Printing "<<excln<<" exclusive jets\n"; 00596 print_jets(clust_seq->exclusive_jets(excln), show_constituents); 00597 } 00598 00599 if (excld > 0.0) { 00600 cout << "Printing exclusive jets for d = "<<excld<<"\n"; 00601 print_jets(clust_seq->exclusive_jets(excld), show_constituents); 00602 } 00603 00604 if (excly > 0.0) { 00605 cout << "Printing exclusive jets for ycut = "<<excly<<"\n"; 00606 print_jets(clust_seq->exclusive_jets_ycut(excly), show_constituents); 00607 } 00608 00609 if (get_all_dij) { 00610 for (int i = nparticles-1; i >= 0; i--) { 00611 printf("d for n = %4d -> %4d is %14.5e\n", i+1, i, clust_seq->exclusive_dmerge(i)); 00612 } 00613 } 00614 if (get_all_yij) { 00615 for (int i = nparticles-1; i >= 0; i--) { 00616 printf("y for n = %4d -> %4d is %14.5e\n", i+1, i, clust_seq->exclusive_ymerge(i)); 00617 } 00618 } 00619 00620 // have the option of printing out the subjets (at scale dcut) of 00621 // each inclusive jet 00622 if (subdcut >= 0.0) { 00623 print_jets_and_sub(clust_seq->inclusive_jets(), subdcut); 00624 } 00625 00626 // useful for testing that recombination sequences are unique 00627 if (unique_write) { 00628 vector<int> unique_history = clust_seq->unique_history_order(); 00629 // construct the inverse of the above mapping 00630 vector<int> inv_unique_history(clust_seq->history().size()); 00631 for (unsigned int i = 0; i < unique_history.size(); i++) { 00632 inv_unique_history[unique_history[i]] = i;} 00633 00634 for (unsigned int i = 0; i < unique_history.size(); i++) { 00635 fj::ClusterSequence::history_element el = 00636 clust_seq->history()[unique_history[i]]; 00637 int uhp1 = el.parent1>=0 ? inv_unique_history[el.parent1] : el.parent1; 00638 int uhp2 = el.parent2>=0 ? inv_unique_history[el.parent2] : el.parent2; 00639 printf("%7d u %15.8e %7d u %7d u\n",i,el.dij,uhp1, uhp2); 00640 } 00641 } 00642 00643 00644 #ifdef FASTJET_ENABLE_PLUGIN_SISCONE 00645 // provide some complementary information for SISCone 00646 if (show_cones) { 00647 const fj::SISConeExtras * extras = 00648 dynamic_cast<const fj::SISConeExtras *>(clust_seq->extras()); 00649 cout << "most ambiguous split (difference in squared dist) = " 00650 << extras->most_ambiguous_split() << endl; 00651 vector<fastjet::PseudoJet> stable_cones(extras->stable_cones()); 00652 stable_cones = sorted_by_rapidity(stable_cones); 00653 for (unsigned int i = 0; i < stable_cones.size(); i++) { 00654 //if (stable_cones[i].phi() < 5.0 && stable_cones[i].phi() > 4.0) { 00655 printf("%5u %15.8f %15.8f %15.8f\n", 00656 i,stable_cones[i].rap(),stable_cones[i].phi(), 00657 stable_cones[i].perp() ); 00658 //} 00659 } 00660 00661 // also show passes for jets 00662 vector<fj::PseudoJet> sisjets = clust_seq->inclusive_jets(); 00663 printf("\n%15s %15s %15s %12s %8s %8s\n","rap","phi","pt","user-index","pass","nconst"); 00664 for (unsigned i = 0; i < sisjets.size(); i++) { 00665 printf("%15.8f %15.8f %15.8f %12d %8d %8d\n", 00666 sisjets[i].rap(), sisjets[i].phi(), sisjets[i].perp(), 00667 sisjets[i].user_index(), extras->pass(sisjets[i]), 00668 clust_seq->constituents(sisjets[i]).size() 00669 ); 00670 00671 } 00672 } 00673 #endif // FASTJET_ENABLE_PLUGIN_SISCONE 00674 00675 if (do_bkgd) { 00676 double rho, sigma, mean_area, empty_area, n_empty_jets; 00677 fj::ClusterSequenceAreaBase * csab = 00678 dynamic_cast<fj::ClusterSequenceAreaBase *>(clust_seq.get()); 00679 if (do_bkgd_csab) { 00680 csab->get_median_rho_and_sigma(bkgd_range, true, rho, sigma, mean_area); 00681 empty_area = csab->empty_area(bkgd_range); 00682 n_empty_jets = csab->n_empty_jets(bkgd_range); 00683 } else if (do_bkgd_jetmedian) { 00684 fj::JetMedianBackgroundEstimator bge(bkgd_range); 00685 bge.set_provide_fj2_sigma(do_bkgd_fj2); 00686 bge.set_cluster_sequence(*csab); 00687 rho = bge.rho(); 00688 sigma = bge.sigma(); 00689 mean_area = bge.mean_area(); 00690 empty_area = bge.empty_area(); 00691 n_empty_jets = bge.n_empty_jets(); 00692 } else { 00693 assert(do_bkgd_gridmedian); 00694 double rapmin, rapmax; 00695 bkgd_range.get_rapidity_extent(rapmin, rapmax); 00696 fj::GridMedianBackgroundEstimator bge(rapmax, 2*ktR); 00697 bge.set_particles(particles); 00698 rho = bge.rho(); 00699 sigma = bge.sigma(); 00700 mean_area = bge.mean_area(); 00701 empty_area = 0; 00702 n_empty_jets = 0; 00703 } 00704 cout << " rho = " << rho 00705 << ", sigma = " << sigma 00706 << ", mean_area = " << mean_area 00707 << ", empty_area = " << empty_area 00708 << ", n_empty_jets = " << n_empty_jets 00709 << endl; 00710 } 00711 } // try 00712 catch (fastjet::Error fjerr) { 00713 cout << "Caught fastjet error, exiting gracefully" << endl; 00714 exit(0); 00715 } 00716 00717 } // irepeat 00718 } // iev 00719 00720 // if we've instantiated a plugin, delete it 00721 if (jet_def.strategy()==fj::plugin_strategy){ 00722 delete jet_def.plugin(); 00723 } 00724 } 00725 00726 00727 00728 00729 //------ HELPER ROUTINES ----------------------------------------------- 00730 /// print a single jet 00731 void print_jet (const fj::PseudoJet & jet) { 00732 int n_constituents = jet.constituents().size(); 00733 printf("%15.8f %15.8f %15.8f %8u\n", 00734 jet.rap(), jet.phi(), jet.perp(), n_constituents); 00735 } 00736 00737 00738 //---------------------------------------------------------------------- 00739 void print_jets(const vector<fj::PseudoJet> & jets_in, bool show_constituents) { 00740 vector<fj::PseudoJet> jets; 00741 if (ee_print) { 00742 jets = sorted_by_E(jets_in); 00743 for (size_t j = 0; j < jets.size(); j++) { 00744 printf("%5u %15.8f %15.8f %15.8f %15.8f\n", 00745 j,jets[j].px(),jets[j].py(),jets[j].pz(),jets[j].E()); 00746 if (show_constituents) { 00747 vector<fj::PseudoJet> const_jets = jets[j].constituents(); 00748 for (size_t k = 0; k < const_jets.size(); k++) { 00749 printf(" jet%03u %15.8f %15.8f %15.8f %15.8f\n",j,const_jets[k].px(), 00750 const_jets[k].py(),const_jets[k].pz(),const_jets[k].E()); 00751 } 00752 cout << "\n\n"; 00753 } 00754 00755 } 00756 } else { 00757 jets = sorted_by_pt(jets_in); 00758 for (size_t j = 0; j < jets.size(); j++) { 00759 printf("%5u %15.8f %15.8f %15.8f", 00760 j,jets[j].rap(),jets[j].phi(),jets[j].perp()); 00761 // also print out the scalar area and the perp component of the 00762 // 4-vector (just enough to check a reasonable 4-vector?) 00763 if (do_areas) printf(" %15.8f %15.8f", jets[j].area(), 00764 jets[j].area_4vector().perp()); 00765 cout << "\n"; 00766 00767 if (show_constituents) { 00768 vector<fj::PseudoJet> const_jets = jets[j].constituents(); 00769 for (size_t k = 0; k < const_jets.size(); k++) { 00770 printf(" jet%03u %15.8f %15.8f %15.8f %5d\n",j,const_jets[k].rap(), 00771 const_jets[k].phi(),sqrt(const_jets[k].kt2()), const_jets[k].cluster_hist_index()); 00772 } 00773 cout << "\n\n"; 00774 } 00775 } 00776 } 00777 00778 if (rootfile != "") { 00779 ofstream ostr(rootfile.c_str()); 00780 ostr << "# " << cmdline_p->command_line() << endl; 00781 ostr << "# output for root" << endl; 00782 assert(jets.size() > 0); 00783 jets[0].validated_cs()->print_jets_for_root(jets,ostr); 00784 } 00785 00786 } 00787 00788 00789 //----- SUBJETS -------------------------------------------------------- 00790 /// a function that pretty prints a list of jets and the subjets for each 00791 /// one 00792 void print_jets_and_sub (const vector<fj::PseudoJet> & jets, double dcut) { 00793 00794 // sort jets into increasing pt 00795 vector<fj::PseudoJet> sorted_jets = sorted_by_pt(jets); 00796 00797 // label the columns 00798 printf("Printing jets and their subjets with subdcut = %10.5f\n",dcut); 00799 printf("%5s %15s %15s %15s %15s\n","jet #", "rapidity", 00800 "phi", "pt", "n constituents"); 00801 00802 // have various kinds of subjet finding, to test consistency among them 00803 enum SubType {internal, newclust_dcut, newclust_R}; 00804 SubType subtype = internal; 00805 //SubType subtype = newclust_dcut; 00806 //SubType subtype = newclust_R; 00807 00808 // print out the details for each jet 00809 //for (unsigned int i = 0; i < sorted_jets.size(); i++) { 00810 for (vector<fj::PseudoJet>::const_iterator jet = sorted_jets.begin(); 00811 jet != sorted_jets.end(); jet++) { 00812 const fj::JetDefinition & jet_def = jet->validated_cs()->jet_def(); 00813 00814 // if jet pt^2 < dcut with kt alg, then some methods of 00815 // getting subjets will return nothing -- so skip the jet 00816 if (jet_def.jet_algorithm() == fj::kt_algorithm 00817 && jet->perp2() < dcut) continue; 00818 00819 00820 printf("%5u ",jet - sorted_jets.begin()); 00821 print_jet(*jet); 00822 vector<fj::PseudoJet> subjets; 00823 fj::ClusterSequence * cspoint; 00824 if (subtype == internal) { 00825 cspoint = 0; 00826 subjets = jet->exclusive_subjets(dcut); 00827 double ddnp1 = jet->exclusive_subdmerge_max(subjets.size()); 00828 double ddn = jet->exclusive_subdmerge_max(subjets.size()-1); 00829 cout << " for " << ddnp1 << " < d < " << ddn << " one has " << endl; 00830 } else if (subtype == newclust_dcut) { 00831 cspoint = new fj::ClusterSequence(jet->constituents(), jet_def); 00832 subjets = cspoint->exclusive_jets(dcut); 00833 } else if (subtype == newclust_R) { 00834 assert(jet_def.jet_algorithm() == fj::cambridge_algorithm); 00835 fj::JetDefinition subjd(jet_def.jet_algorithm(), jet_def.R()*sqrt(dcut)); 00836 cspoint = new fj::ClusterSequence(jet->constituents(), subjd); 00837 subjets = cspoint->inclusive_jets(); 00838 } else { 00839 cerr << "unrecognized subtype for subjet finding" << endl; 00840 exit(-1); 00841 } 00842 00843 subjets = sorted_by_pt(subjets); 00844 for (unsigned int j = 0; j < subjets.size(); j++) { 00845 printf(" -sub-%02u ",j); 00846 print_jet(subjets[j]); 00847 } 00848 00849 if (cspoint != 0) delete cspoint; 00850 00851 //fj::ClusterSequence subseq(clust_seq->constituents(sorted_jets[i]), 00852 // fj::JetDefinition(fj::cambridge_algorithm, 0.4)); 00853 //vector<fj::PseudoJet> subjets = sorted_by_pt(subseq.inclusive_jets()); 00854 //for (unsigned int j = 0; j < subjets.size(); j++) { 00855 // printf(" -sub-%02u ",j); 00856 // print_jet(subseq, subjets[j]); 00857 //} 00858 } 00859 00860 } 00861