Selectors

Classes
class	fastjet::Selector
	Class that encodes information about cuts and other selection criteria that can be applied to PseudoJet(s). More...
class	fastjet::SelectorWorker
	default selector worker is an abstract virtual base class More...
Functions
Selector	fastjet::SelectorIdentity ()
Selector	fastjet::operator! (const Selector &s)
	logical not applied on a selector
Selector	fastjet::operator|| (const Selector &s1, const Selector &s2)
	logical or between two selectors
Selector	fastjet::operator&& (const Selector &s1, const Selector &s2)
	logical and between two selectors
Selector	fastjet::operator* (const Selector &s1, const Selector &s2)
	successive application of 2 selectors
Selector	fastjet::SelectorPtMin (double ptmin)
	select objects with pt >= ptmin
Selector	fastjet::SelectorPtMax (double ptmax)
	select objects with pt <= ptmax
Selector	fastjet::SelectorPtRange (double ptmin, double ptmax)
	select objects with ptmin <= pt <= ptmax
Selector	fastjet::SelectorEtMin (double Etmin)
	select objects with Et >= Etmin
Selector	fastjet::SelectorEtMax (double Etmax)
	select objects with Et <= Etmax
Selector	fastjet::SelectorEtRange (double Etmin, double Etmax)
	select objects with Etmin <= Et <= Etmax
Selector	fastjet::SelectorEMin (double Emin)
	select objects with E >= Emin
Selector	fastjet::SelectorEMax (double Emax)
	select objects with E <= Emax
Selector	fastjet::SelectorERange (double Emin, double Emax)
	select objects with Emin <= E <= Emax
Selector	fastjet::SelectorMassMin (double Mmin)
	select objects with Mass >= Mmin
Selector	fastjet::SelectorMassMax (double Mmax)
	select objects with Mass <= Mmax
Selector	fastjet::SelectorMassRange (double Mmin, double Mmax)
	select objects with Mmin <= Mass <= Mmax
Selector	fastjet::SelectorRapMin (double rapmin)
	select objects with rap >= rapmin
Selector	fastjet::SelectorRapMax (double rapmax)
	select objects with rap <= rapmax
Selector	fastjet::SelectorRapRange (double rapmin, double rapmax)
	select objects with rapmin <= rap <= rapmax
Selector	fastjet::SelectorAbsRapMin (double absrapmin)
	select objects with |rap| >= absrapmin
Selector	fastjet::SelectorAbsRapMax (double absrapmax)
	select objects with |rap| <= absrapmax
Selector	fastjet::SelectorAbsRapRange (double absrapmin, double absrapmax)
	select objects with absrapmin <= |rap| <= absrapmax
Selector	fastjet::SelectorEtaMin (double etamin)
	select objects with eta >= etamin
Selector	fastjet::SelectorEtaMax (double etamax)
	select objects with eta <= etamax
Selector	fastjet::SelectorEtaRange (double etamin, double etamax)
	select objects with etamin <= eta <= etamax
Selector	fastjet::SelectorAbsEtaMin (double absetamin)
	select objects with |eta| >= absetamin
Selector	fastjet::SelectorAbsEtaMax (double absetamax)
	select objects with |eta| <= absetamax
Selector	fastjet::SelectorAbsEtaRange (double absetamin, double absetamax)
	select objects with absetamin <= |eta| <= absetamax
Selector	fastjet::SelectorPhiRange (double phimin, double phimax)
	select objects with phimin <= phi <= phimax
Selector	fastjet::SelectorRapPhiRange (double rapmin, double rapmax, double phimin, double phimax)
	select objects with rapmin <= rap <= rapmax && phimin <= phi <= phimax
Selector	fastjet::SelectorNHardest (unsigned int n)
	select the n hardest objects
Selector	fastjet::SelectorCircle (const double &radius)
	select objets within a distance 'radius' from the location of the reference jet, set by Selector::set_reference(...)
Selector	fastjet::SelectorDoughnut (const double &radius_in, const double &radius_out)
	select objets with distance from the reference jet is between 'radius_in' and 'radius_out'; the reference jet is set by Selector::set_reference(...)
Selector	fastjet::SelectorStrip (const double &half_width)
	select objets within a rapidity distance 'half_width' from the location of the reference jet, set by Selector::set_reference(...)
Selector	fastjet::SelectorRectangle (const double &half_rap_width, const double &half_phi_width)
	select objets within rapidity distance 'half_rap_width' from the reference jet and azimuthal-angle distance within 'half_phi_width'; the reference jet is set by Selector::set_reference(...)
Selector	fastjet::SelectorPtFractionMin (double fraction)
	select objects that carry at least a fraction "fraction" of the reference jet.
Selector	fastjet::SelectorIsZero ()
	select PseudoJet with 0 momentum
Selector	fastjet::SelectorIsPureGhost ()
	select objects that are (or are only made of) ghosts.

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Function Documentation

Selector fastjet::operator!

(

const Selector &

s

)

logical not applied on a selector

This will keep objects that do not pass the 's' selector

Definition at line 277 of file Selector.cc.

Selector fastjet::operator||	(	const Selector &	s1,
		const Selector &	s2
	)

logical or between two selectors

this will keep the objects that are selected by s1 or s2

Definition at line 463 of file Selector.cc.

Selector fastjet::operator&&	(	const Selector &	s1,
		const Selector &	s2
	)

logical and between two selectors

this will keep the objects that are selected by both s1 and s2

watch out: for both s1 and s2, the selection is applied on the original list of objects. For successive applications of two selectors (convolution/multiplication) see the operator *

Definition at line 387 of file Selector.cc.

Selector fastjet::operator*	(	const Selector &	s1,
		const Selector &	s2
	)

successive application of 2 selectors

Apply the selector s2, then the selector s1.

watch out: the operator * acts like an operator product i.e. does not commute. The order of its arguments is therefore important. Whenever they commute (in particluar, when they apply jet by jet), this would have the same effect as the logical &&.

Definition at line 503 of file Selector.cc.

Selector fastjet::SelectorRapPhiRange	(	double	rapmin,
		double	rapmax,
		double	phimin,
		double	phimax
	)

select objects with rapmin <= rap <= rapmax && phimin <= phi <= phimax

Note that this is essentially a combination of SelectorRapRange and SelectorPhiRange. We provide it as a Selector on its own in order to use the known area (which would otherwise be lost by the && operator)

Definition at line 950 of file Selector.cc.

Selector fastjet::SelectorPtFractionMin

(

double

fraction

)

select objects that carry at least a fraction "fraction" of the reference jet.

The reference jet must have been set with Selector::set_reference(...)

Definition at line 1309 of file Selector.cc.

Selector fastjet::SelectorIsPureGhost

(

)

select objects that are (or are only made of) ghosts.

PseudoJets for which has_area() are considered non-pure-ghost.

Definition at line 1363 of file Selector.cc.