doc/v606/rf506__msgservice_8C.html

#ifndef __CINT__

#include "RooGlobalFunc.h"

#endif

#include "RooRealVar.h"

#include "RooDataSet.h"

#include "RooGaussian.h"

#include "RooConstVar.h"

#include "RooPolynomial.h"

#include "RooAddPdf.h"

#include "TCanvas.h"

#include "TAxis.h"

#include "RooPlot.h"

#include "RooMsgService.h"


using namespace RooFit ;


void rf506_msgservice()

{

  // C r e a t e   p d f

  // --------------------


  // Construct gauss(x,m,s)

  RooRealVar x("x","x",-10,10) ;

  RooRealVar m("m","m",0,-10,10) ;

  RooRealVar s("s","s",1,-10,10) ;

  RooGaussian gauss("g","g",x,m,s) ;


  // Construct poly(x,p0)

  RooRealVar p0("p0","p0",0.01,0.,1.) ;

  RooPolynomial poly("p","p",x,p0) ;


  // Construct model = f*gauss(x) + (1-f)*poly(x)

  RooRealVar f("f","f",0.5,0.,1.) ;

  RooAddPdf model("model","model",RooArgSet(gauss,poly),f) ;


  RooDataSet* data = model.generate(x,10) ;


  // P r i n t   c o n f i g u r a t i o n   o f   m e s s a g e   s e r v i c e

  // ---------------------------------------------------------------------------


  // Print streams configuration

  RooMsgService::instance().Print() ;

  cout << endl ;


  // A d d i n g   I n t e g r a t i o n   t o p i c   t o   e x i s t i n g   I N F O   s t r e a m

  // -----------------------------------------------------------------------------------------------


  // Print streams configuration

  RooMsgService::instance().Print() ;

  cout << endl ;


  // Add Integration topic to existing INFO stream

  RooMsgService::instance().getStream(1).addTopic(Integration) ;


  // Construct integral over gauss to demonstrate new message stream

  RooAbsReal* igauss = gauss.createIntegral(x) ;

  igauss->Print() ;


  // Print streams configuration in verbose, which also shows inactive streams

  cout << endl ;

  RooMsgService::instance().Print() ;

  cout << endl ;


  // Remove stream

  RooMsgService::instance().getStream(1).removeTopic(Integration) ;


  // E x a m p l e s   o f   p d f   v a l u e   t r a c i n g   s t r e a m

  // -----------------------------------------------------------------------


  // Show DEBUG level message on function tracing, trace RooGaussian only

  RooMsgService::instance().addStream(DEBUG,Topic(Tracing),ClassName("RooGaussian")) ;


  // Perform a fit to generate some tracing messages

  model.fitTo(*data,Verbose(kTRUE)) ;


  // Reset message service to default stream configuration

  RooMsgService::instance().reset() ;


  // Show DEBUG level message on function tracing on all objects, redirect output to file

  RooMsgService::instance().addStream(DEBUG,Topic(Tracing),OutputFile("rf506_debug.log")) ;


  // Perform a fit to generate some tracing messages

  model.fitTo(*data,Verbose(kTRUE)) ;


  // Reset message service to default stream configuration

  RooMsgService::instance().reset() ;


  // E x a m p l e   o f   a n o t h e r   d e b u g g i n g   s t r e a m

  // ---------------------------------------------------------------------


  // Show DEBUG level messages on client/server link state management

  RooMsgService::instance().addStream(DEBUG,Topic(LinkStateMgmt)) ;

  RooMsgService::instance().Print("v") ;


  // Clone composite pdf g to trigger some link state management activity

  RooAbsArg* gprime = gauss.cloneTree() ;

  gprime->Print() ;


  // Reset message service to default stream configuration

  RooMsgService::instance().reset() ;


}