#include <GaussNoiseFP420.h>

Inheritance diagram for GaussNoiseFP420:

Public Member Functions
PileUpFP420::signal_map_type	addNoise (PileUpFP420::signal_map_type)
	GaussNoiseFP420 (int ns, float nrms, float th, bool aNpixel, int verbosity)
void	setNumPixels (int in)
void	setThreshold (float in)
Private Attributes
bool	addNoisyPixels
float	noiseRMS
int	numPixels
float	threshold
int	verbosi

Detailed Description

Definition at line 7 of file GaussNoiseFP420.h.

Constructor & Destructor Documentation

GaussNoiseFP420::GaussNoiseFP420	(	int	ns,
		float	nrms,
		float	th,
		bool	aNpixel,
		int	verbosity
	)

Definition at line 11 of file GaussNoiseFP420.cc.

                                                                                         :
  numPixels(ns), noiseRMS(nrms), threshold(th), addNoisyPixels(aNpixel), verbosi(verbosity){}

Member Function Documentation

PileUpFP420::signal_map_type GaussNoiseFP420::addNoise ( PileUpFP420::signal_map_type in ) [virtual]

Implements GNoiseFP420.

Definition at line 16 of file GaussNoiseFP420.cc.

References addNoisyPixels, gather_cfg::cout, relval_steps::gen(), GaussNoiseProducerFP420::generate(), noiseRMS, numPixels, AlCaHLTBitMon_ParallelJobs::p, threshold, and verbosi.

Referenced by FP420DigiMain::run().

                                                      {
  
  PileUpFP420::signal_map_type _signal;  
  
  // Add noise on non-hit pixels
  std::map<int,float,std::less<int> > generatedNoise;
  
  //  int numberOfPixels = (numRows * numColumns);// numPixels=numberOfPixels
  
  
  GaussNoiseProducerFP420 gen;
  gen.generate(numPixels,threshold,noiseRMS,generatedNoise);// threshold is thePixelThreshold
  
  // noise for channels with signal:
  // ----------------------------
  
  for (PileUpFP420::signal_map_type::const_iterator si  = in.begin();
       si != in.end()  ; si++){
    
    if(verbosi>0) {
      std::cout << " ***GaussNoiseFP420:  before noise:" << std::endl;
      std::cout << " for si->first=  " << si->first  << "    _signal[si->first]=  " << _signal[si->first] << "        si->second=      " << si->second  << std::endl;
    }
    // define Gaussian noise centered at 0. with sigma = noiseRMS:
    float noise( CLHEP::RandGauss::shoot(0.,noiseRMS) );           
    //    float noise  = CLHEP::RandGaussQ::shoot(0.,theNoiseInElectrons) ;
    // add noise to each channel with signal:
    _signal[si->first] = si->second + noise;
    
    if(verbosi>0) {
      std::cout << " ***GaussNoiseFP420: after noise added  = " << noise  << std::endl;
      std::cout << "after noise added the _signal[si->first]=  " << _signal[si->first] << std::endl;
    }
  }
  
  //                                                                                                    //
  if(addNoisyPixels){  // Option to skip noise in non-hit pixels
    // Noise on the other channels:
    typedef std::map<int,float,std::less<int> >::iterator MI;
    for(MI p = generatedNoise.begin(); p != generatedNoise.end(); p++){
      if(_signal[(*p).first] == 0) {
        _signal[(*p).first] += (*p).second;
      }
    }//for(MI
  }
  
  // or:
  //                                                                        //
  /*
    if(addNoisyPixels){  // Option to skip noise in non-hit pixels
    // Noise on the other channels:
    typedef std::map<int,float,std::less<int> >::iterator MI;
    for(MI p = generatedNoise.begin(); p != generatedNoise.end(); p++){
    int iy = ((*p).first) / numRows;
    int ix = ((*p).first) - (iy*numRows);
    // Keep for a while for testing.
    if( iy < 0 || iy > (numColumns-1) ) 
    LogWarning ("Pixel Geometry") << " error in iy " << iy ;
    if( ix < 0 || ix > (numRows-1) )
    LogWarning ("Pixel Geometry")  << " error in ix " << ix ;
    int chan = PixelDigi::pixelToChannel(ix, iy);
    LogDebug ("Pixel Digitizer")<<" Storing noise = " << (*mapI).first << " " << (*mapI).second 
    << " " << ix << " " << iy << " " << chan ;
    if(_signal[chan] == 0){
    _signal[(*p).first] += (*p).second;
    }//if
    }//for(MI
    }
  */    
  //                                                                        //
  //                                                                                                    //
  
  
  //
  return _signal;
  //
}