rarGaussian Class Reference

RooGaussian/RooBreitWigner PDF builder. More...

#include <rarGaussian.hh>

Inheritance diagram for rarGaussian:

List of all members.

Public Member Functions
	rarGaussian ()
	Trivial ctor.
	rarGaussian (const char *configFile, const char *configSec, const char *configStr, rarDatasets *theDatasets, RooDataSet *theData, const char *name, const char *title)
	Default ctor.
virtual	~rarGaussian ()
Protected Member Functions
void	init ()
	Initial function called by ctor.
Protected Attributes
RooAbsReal *	_x
	Default obs.
RooAbsReal *	_mean
	Mean of PDF.
RooAbsReal *	_sigma
	Sigma of PDF.
RooAbsReal *	_scale
	Scale of the sigma.
RooAbsReal *	_shift
	Shift of the mean.
Private Member Functions
	rarGaussian (const rarGaussian &)
	ClassDef (rarGaussian, 0)

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Detailed Description

RooGaussian/RooBreitWigner PDF builder.

Build RooGaussian / RooBreitWigner Pdf.

Config Directives:

/// configStr = Gaussian ["<Optional Title>"]
/// configStr = BreitWigner ["<Optional Title>"]
/// x = AbsReal Def
/// mean = AbsReal Def
/// sigma = AbsReal Def

x is the default observable. mean is the mean of the PDF. sigma is the sigma of the PDF. All the variables can be RooRealVar or RooFormulaVar.

Definition at line 38 of file rarGaussian.hh.

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Constructor & Destructor Documentation

rarGaussian::rarGaussian

(

)

Trivial ctor.

Usually the objects should be created using other ctors.

Definition at line 42 of file rarGaussian.cc.

References init().

  : rarBasePdf(),
    _x(0), _mean(0), _sigma(0),
    _scale(0), _shift(0)
{
  init();
}

rarGaussian::rarGaussian	(	const char *	configFile,
		const char *	configSec,
		const char *	configStr,
		rarDatasets *	theDatasets,
		RooDataSet *	theData,
		const char *	name,
		const char *	title
	)

Default ctor.

Parameters:

	configFile	The config file
	configSec	The config section
	configStr	The config string
	theDatasets	Available datasets
	theData	Default dataset for this PDF
	name	The name
	title	The title

The default ctor first initializes data members, and then calls init.

Definition at line 62 of file rarGaussian.cc.

References init().

  : rarBasePdf(configFile, configSec, configStr,
               theDatasets, theData, name, title),
    _x(0), _mean(0), _sigma(0),
    _scale(0), _shift(0)
{
  init();
}

rarGaussian::~rarGaussian

(

)

[virtual]

Definition at line 74 of file rarGaussian.cc.

{
}

rarGaussian::rarGaussian

(

const rarGaussian &

)

[private]

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Member Function Documentation

rarGaussian::ClassDef	(	rarGaussian	,
		0
	)			[private]

void rarGaussian::init

(

)

[protected, virtual]

Initial function called by ctor.

init is called by the ctor. It first creates the parameters by calling createAbsReal, and finally it builds RooGaussian/RooBreitWigner PDF with _pdfType being Gaussian/BreitWigner, respectively.

Reimplemented from rarBasePdf.

Definition at line 84 of file rarGaussian.cc.

References _mean, rarBasePdf::_obsSet, rarBasePdf::_params, rarBasePdf::_pdfType, _scale, _shift, _sigma, rarBasePdf::_thePdf, _x, rarConfig::createAbsReal(), rarConfig::createAbsVar(), rarBasePdf::getVarSec(), and rarConfig::readConfStr().

Referenced by rarGaussian().

{
  cout<<"init of rarGaussian for "<<GetName()<<":"<<endl;
  
  // first get its dependent/observable
  _x=createAbsReal("x", "observable"); assert(_x);
  RooRealVar *x=(RooRealVar *)RooArgList(_obsSet).at(0); assert(x);
  // Config pdf params
  _mean=createAbsReal("mean", "#mu", (x->getMin()+x->getMax())/2,
                      x->getMin(), x->getMax(), _x->getUnit());
  if ("notSet"!=readConfStr("shift", "notSet", getVarSec())) { // use shift
    _shift=createAbsReal("shift", "d#mu", 0.);
    _mean=(RooAbsReal*)
      createAbsVar(Form("%s %s", "meanS RooFormulaVar","@0+@1 mean shift"));
  }
  _sigma=createAbsReal("sigma", "#sigma", .1, 0., 1., _x->getUnit());
  if ("notSet"!=readConfStr("scale", "notSet", getVarSec())) { // use scale
    _scale=createAbsReal("scale", "S#sigma_{C}", 1.);
    _sigma=(RooAbsReal*)
      createAbsVar(Form("%s %s","sigmaS RooFormulaVar","@0*@1 sigma scale"));
  }
  _params.Print("v");
  
  // create pdf
  if("BreitWigner"==_pdfType) {
    _thePdf=new RooBreitWigner(Form("the_%s", GetName()),
                               _pdfType+" "+GetTitle(), *_x, *_mean, *_sigma);
  } else if ("Landau"==_pdfType) {
    _thePdf=new RooLandau(Form("the_%s", GetName()),
                          _pdfType+" "+GetTitle(), *_x, *_mean, *_sigma);
  } else { // default
    _thePdf=new RooGaussian(Form("the_%s", GetName()), _pdfType+" "+GetTitle(),
                            *_x, *_mean, *_sigma);
  }
}

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Member Data Documentation

RooAbsReal* rarGaussian::_mean [protected]

Mean of PDF.

Definition at line 51 of file rarGaussian.hh.

Referenced by init().

RooAbsReal* rarGaussian::_scale [protected]

Scale of the sigma.

Definition at line 53 of file rarGaussian.hh.

Referenced by init().

RooAbsReal* rarGaussian::_shift [protected]

Shift of the mean.

Definition at line 54 of file rarGaussian.hh.

Referenced by init().

RooAbsReal* rarGaussian::_sigma [protected]

Sigma of PDF.

Definition at line 52 of file rarGaussian.hh.

Referenced by init().

RooAbsReal* rarGaussian::_x [protected]

Default obs.

Definition at line 50 of file rarGaussian.hh.

Referenced by init().

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The documentation for this class was generated from the following files:

• rarGaussian.hh
• rarGaussian.cc

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