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FastJet
3.3.3
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Parameters to configure the computation of jet areas using ghosts. More...
#include <fastjet/GhostedAreaSpec.hh>
Public Member Functions | |
| GhostedAreaSpec () | |
| default constructor | |
| GhostedAreaSpec (double ghost_maxrap_in, int repeat_in=gas::def_repeat, double ghost_area_in=gas::def_ghost_area, double grid_scatter_in=gas::def_grid_scatter, double pt_scatter_in=gas::def_pt_scatter, double mean_ghost_pt_in=gas::def_mean_ghost_pt) | |
| explicit constructor | |
| GhostedAreaSpec (double ghost_minrap_in, double ghost_maxrap_in, int repeat_in=gas::def_repeat, double ghost_area_in=gas::def_ghost_area, double grid_scatter_in=gas::def_grid_scatter, double pt_scatter_in=gas::def_pt_scatter, double mean_ghost_pt_in=gas::def_mean_ghost_pt) | |
| explicit constructor | |
| GhostedAreaSpec (const Selector &selector, int repeat_in=gas::def_repeat, double ghost_area_in=gas::def_ghost_area, double grid_scatter_in=gas::def_grid_scatter, double pt_scatter_in=gas::def_pt_scatter, double mean_ghost_pt_in=gas::def_mean_ghost_pt) | |
| constructor based on a Selector More... | |
| void | _initialize () |
| does the initialization of actual ghost parameters More... | |
| double | ghost_rapmax () const |
| double | ghost_maxrap () const |
| double | ghost_etamax () const |
| double | ghost_maxeta () const |
| double | ghost_area () const |
| double | grid_scatter () const |
| double | pt_scatter () const |
| double | mean_ghost_pt () const |
| int | repeat () const |
| bool | fj2_placement () const |
| double | kt_scatter () const |
| double | mean_ghost_kt () const |
| double | actual_ghost_area () const |
| int | n_ghosts () const |
| void | set_ghost_area (double val) |
| void | set_ghost_rapmax (double val) |
| void | set_ghost_maxrap (double val) |
| void | set_ghost_etamax (double val) |
| void | set_ghost_maxeta (double val) |
| void | set_grid_scatter (double val) |
| void | set_pt_scatter (double val) |
| void | set_mean_ghost_pt (double val) |
| void | set_repeat (int val) |
| void | set_kt_scatter (double val) |
| void | set_mean_ghost_kt (double val) |
| void | set_fj2_placement (bool val) |
| if val is true, set ghost placement as it was in FastJet 2.X. More... | |
| int | nphi () const |
| return nphi (ghosts layed out (-nrap, 0..nphi-1), (-nrap+1,0..nphi-1), ... More... | |
| int | nrap () const |
| void | get_random_status (std::vector< int > &__iseed) const |
| get all relevant information about the status of the random number generator, so that it can be reset subsequently with set_random_status. More... | |
| void | set_random_status (const std::vector< int > &__iseed) |
| set the status of the random number generator, as obtained previously with get_random_status. More... | |
| void | checkpoint_random () |
| void | restore_checkpoint_random () |
| std::string | description () const |
| for a summary | |
| void | add_ghosts (std::vector< PseudoJet > &) const |
| push a set of ghost 4-momenta onto the back of the vector of PseudoJets More... | |
| double | random_at_own_risk () const |
| very deprecated public access to a random number from the internal generator | |
| BasicRandom< double > & | generator_at_own_risk () const |
| very deprecated public access to the generator itself | |
Parameters to configure the computation of jet areas using ghosts.
Class that defines the parameters that go into the measurement of active jet areas.
Definition at line 65 of file GhostedAreaSpec.hh.
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explicit |
constructor based on a Selector
explicit constructor
Definition at line 44 of file GhostedAreaSpec.cc.
| void fastjet::GhostedAreaSpec::_initialize | ( | ) |
does the initialization of actual ghost parameters
sets the detailed parameters for the ghosts (which may not be quite the same as those requested – this is in order for things to fit in nicely into 2pi etc...
Definition at line 87 of file GhostedAreaSpec.cc.
| void fastjet::GhostedAreaSpec::set_fj2_placement | ( | bool | val | ) |
if val is true, set ghost placement as it was in FastJet 2.X.
The main differences between FJ2 and FJ3 ghost placement are
in FJ2, the ghosts are placed at the corners of grid cells (i.e. extending up to maxrap), while in FJ3 they are placed at the centres of grid cells (i.e. extending roughly up to maxrap-sqrt(area)). The FJ2 behaviour effectively skews the total area coverage when maxrap is small, by an amount sqrt(area)/(2*maxrap).
FJ2 placement is now deprecated.
Definition at line 78 of file GhostedAreaSpec.cc.
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inline |
return nphi (ghosts layed out (-nrap, 0..nphi-1), (-nrap+1,0..nphi-1), ...
(nrap,0..nphi-1)
Definition at line 181 of file GhostedAreaSpec.hh.
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inline |
get all relevant information about the status of the random number generator, so that it can be reset subsequently with set_random_status.
Definition at line 187 of file GhostedAreaSpec.hh.
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inline |
set the status of the random number generator, as obtained previously with get_random_status.
Note that the random generator is a static member of the class, i.e. common to all instances of the class — so if you modify the random for this instance, you modify it for all instances.
Definition at line 195 of file GhostedAreaSpec.hh.
| void fastjet::GhostedAreaSpec::add_ghosts | ( | std::vector< PseudoJet > & | ) | const |
push a set of ghost 4-momenta onto the back of the vector of PseudoJets
adds the ghost 4-momenta to the vector of PseudoJet's
Definition at line 114 of file GhostedAreaSpec.cc.
1.8.13