[u/mrichter/AliRoot.git] / TRD / AliTRDarraySignal.cxx

/************************************************************************* 
* Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. * 
*                                                                        * 
* Author: The ALICE Off-line Project.                                    * 
* Contributors are mentioned in the code where appropriate.              * 
*                                                                        * 
* Permission to use, copy, modify and distribute this software and its   * 
* documentation strictly for non-commercial purposes is hereby granted   * 
* without fee, provided that the above copyright notice appears in all   * 
* copies and that both the copyright notice and this permission notice   * 
* appear in the supporting documentation. The authors make no claims     * 
* about the suitability of this software for any purpose. It is          * 
* provided "as is" without express or implied warranty.                  *
**************************************************************************/

/* $Id: AliTRDarraySignal.cxx 25392 2008-04-23 19:40:29Z cblume $ */

/////////////////////////////////////////////////////////
//                                                     //
// Container Class for Signals                         //
//                                                     //
// Author:                                             //
//   Hermes Leon Vargas (hleon@ikf.uni-frankfurt.de)   //
//                                                     //
/////////////////////////////////////////////////////////

#include <TArray.h>

#include "AliTRDarraySignal.h"
#include "AliTRDfeeParam.h"

ClassImp(AliTRDarraySignal)

Short_t *AliTRDarraySignal::fgLutPadNumbering = 0x0;

//_______________________________________________________________________
AliTRDarraySignal::AliTRDarraySignal()
                  :TObject()
                  ,fNdet(0)
                  ,fNrow(0)
                  ,fNcol(0)
         	  ,fNumberOfChannels(0)
                  ,fNtime(0)
                  ,fNdim(0)  
                  ,fSignal(0)
{

  //
  // AliTRDarraySignal default constructor
  //

  CreateLut();
	   
}

//_______________________________________________________________________
AliTRDarraySignal::AliTRDarraySignal(Int_t nrow, Int_t ncol,Int_t ntime)
                  :TObject()
                  ,fNdet(0)
                  ,fNrow(0)
                  ,fNcol(0)
	          ,fNumberOfChannels(0)
                  ,fNtime(0)
                  ,fNdim(0)
                  ,fSignal(0)
{
  //
  // AliTRDarraySignal constructor
  //

  CreateLut(); 
  Allocate(nrow,ncol,ntime);

}

//_______________________________________________________________________
AliTRDarraySignal::AliTRDarraySignal(const AliTRDarraySignal &d)
                  :TObject()
		  ,fNdet(d.fNdet)
		  ,fNrow(d.fNrow)
		  ,fNcol(d.fNcol)
                  ,fNumberOfChannels(d.fNumberOfChannels)
		  ,fNtime(d.fNtime)
		  ,fNdim(d.fNdim)
		  ,fSignal(0)
{
  //
  // AliTRDarraySignal copy constructor
  //

  fSignal = new Float_t[fNdim];
  memcpy(fSignal, d.fSignal, fNdim*sizeof(Float_t));

}

//_______________________________________________________________________
AliTRDarraySignal::~AliTRDarraySignal()
{
  //
  // AliTRDarraySignal destructor
  //

  if (fSignal)   
    {
      delete [] fSignal;
      fSignal=0;  
    }

}

//_______________________________________________________________________
AliTRDarraySignal &AliTRDarraySignal::operator=(const AliTRDarraySignal &d)
{
  //
  // Assignment operator
  //

  if (this==&d) 
    {
      return *this;
    }

  if (fSignal)
    {
      delete [] fSignal;
    }
  fNdet=d.fNdet;
  fNrow=d.fNrow;
  fNcol=d.fNcol;
  fNumberOfChannels = d.fNumberOfChannels;
  fNtime=d.fNtime;
  fNdim=d.fNdim;
  fSignal = new Float_t[fNdim];
  memcpy(fSignal,d.fSignal, fNdim*sizeof(Float_t));

  return *this;

}

//_______________________________________________________________________
void AliTRDarraySignal::Allocate(Int_t nrow, Int_t ncol, Int_t ntime)
{
  //
  // Allocates memory for an AliTRDarraySignal object with dimensions 
  // Row*NumberOfNecessaryMCMs*ADCchannelsInMCM*Time
  // To be consistent with AliTRDarrayADC
  //

  fNrow=nrow;
  fNcol=ncol;
  fNtime=ntime;
  Int_t adcchannelspermcm = AliTRDfeeParam::GetNadcMcm(); 
  Int_t padspermcm = AliTRDfeeParam::GetNcolMcm(); 
  Int_t numberofmcms = fNcol/padspermcm; 
  fNumberOfChannels = numberofmcms*adcchannelspermcm;
  fNdim = nrow*fNumberOfChannels*ntime;
  if (fSignal)   
    {
      delete [] fSignal;
    }
  fSignal = new Float_t[fNdim];
  memset(fSignal,0,sizeof(Float_t)*fNdim);

}

//_______________________________________________________________________
Int_t AliTRDarraySignal::GetOverThreshold(Float_t threshold) const
{
  //
  // Get the number of entries over the threshold 
  //

  Int_t counter=0;
  for(Int_t i=0; i<fNdim; i++)
    {
      if(fSignal[i]>threshold)
	{
	  counter++;
	}
    }
  return counter;

}

//_______________________________________________________________________
void AliTRDarraySignal::Compress(Float_t minval)
{
  //
  // Compress the array, setting values equal or 
  // below minval to zero (minval>=0)
  //

  Int_t counter=0;
  Int_t newDim=0;
  Int_t j;                 
  Int_t r=0;
  Int_t k=0;

  Int_t *longArr = new Int_t[fNdim];  

  if(longArr) 
    {

      //Initialize the array
      memset(longArr,0,sizeof(Int_t)*fNdim);

      for(Int_t i=0;i<fNdim; i++)
        {
          j=0;
          if(fSignal[i]<=minval) 
	    {
	      for(k=i;k<fNdim;k++)
	        {
	          if(fSignal[k]<=minval)
		    {
		      j=j+1;
		      longArr[r]=j;
	  	    }
	          else
		    {
		      break;
		    }
	        } 
	      r=r+1;          
	    }
          i=i+j;
        }

      //Calculate the size of the compressed array
      for(Int_t i=0; i<fNdim;i++)
        {
          if(longArr[i]!=0)   
	    {
	      counter=counter+longArr[i]-1;
	    }
        }
      newDim=fNdim-counter;   //New dimension

      //Fill the buffer of the compressed array
      Float_t* buffer = new Float_t[newDim];
      Int_t counterTwo=0;

      if(buffer)
        {

          //Write the new array
          Int_t g=0;
          for(Int_t i=0; i<newDim; i++)
            {
              if(counterTwo<fNdim)
	        {
	          if(fSignal[counterTwo]>minval)   
	            {
	              buffer[i]=fSignal[counterTwo];
	            }
	          if(fSignal[counterTwo]<=minval)   
	            {
	              buffer[i]=-(longArr[g]);
	              counterTwo=counterTwo+longArr[g]-1;
	              g++;
	            }  
	          counterTwo++;
	        }
            }

          //Copy the buffer
          if(fSignal)
            {
              delete [] fSignal;
              fSignal=0;
            }
          fSignal = new Float_t[newDim];
          fNdim = newDim;
          for(Int_t i=0; i<newDim; i++)
            {
              fSignal[i] = buffer[i]; 
            }

          delete [] buffer;
          buffer=0;

        } 

      delete [] longArr;
      longArr=0;

    }

}

//_______________________________________________________________________
void AliTRDarraySignal::Expand()
{
  //
  // Expand the array
  //

  if(fSignal)
    {

      //Check if the array has not been already expanded
      Int_t verif=0;
      for(Int_t i=0; i<fNdim; i++)
        {
          if(fSignal[i]<0)
	    {
	      verif++;
	    }
        }

      if(verif==0)
        {
          return;
        }

      Int_t dimexp=0;
      Int_t *longArr = new Int_t[fNdim];

      if(longArr)
	{

          memset(longArr,0,sizeof(Int_t)*fNdim);

          Int_t r2=0;
          for(Int_t i=0; i<fNdim;i++)
            {
              if(fSignal[i]<0)  
	        {
	          longArr[r2]=(Int_t)(-fSignal[i]); 
	          r2++;
	        }
            }

          //Calculate new dimensions
          for(Int_t i=0; i<fNdim;i++)
            {
              if(longArr[i]!=0)      
	        {
	          dimexp=dimexp+longArr[i]-1;
	        }
            }
          dimexp=dimexp+fNdim;   //Dimension of the expanded array

          //Write in the buffer the new array
          Int_t contaexp =0;    
          Int_t h=0;
          Float_t* bufferE = new Float_t[dimexp];

          if(bufferE)
	    {

              for(Int_t i=0; i<dimexp; i++)
                {
                  if(fSignal[contaexp]>0)  
	            {
	              bufferE[i]=fSignal[contaexp];
	            }
                  if(fSignal[contaexp]<0)  
 	            {
	              for(Int_t j=0; j<longArr[h];j++)
	                {
	                  bufferE[i+j]=0;
	                }
	              i=i+longArr[h]-1;
	              h++;
	            }
                  contaexp++;
                }

              //Copy the buffer
              delete [] fSignal;
              fSignal=0;
              fSignal = new Float_t[dimexp];
              fNdim = dimexp;
              for(Int_t i=0; i<dimexp; i++)
                {
                  fSignal[i] = bufferE[i]; 
                }

              delete [] bufferE;

	    }

          delete [] longArr;

        }

    }

}
//________________________________________________________________________________
void AliTRDarraySignal::Reset()
{
  //
  // Reset the array, the old contents are deleted
  // The array keeps the same dimensions as before
  //

  memset(fSignal,0,sizeof(Float_t)*fNdim);

}
//________________________________________________________________________________
Float_t AliTRDarraySignal::GetData(Int_t nrow, Int_t ncol, Int_t ntime) const
{
  //
  // Get the data using the pad numbering.
  // To access data using the mcm scheme use instead
  // the method GetDataByAdcCol
  //

  Int_t corrcolumn = fgLutPadNumbering[ncol];

  return fSignal[(nrow*fNumberOfChannels+corrcolumn)*fNtime+ntime];

}
//________________________________________________________________________________
void AliTRDarraySignal::SetData(Int_t nrow, Int_t ncol, Int_t ntime, Float_t value)
{
  //
  // Set the data using the pad numbering.
  // To write data using the mcm scheme use instead
  // the method SetDataByAdcCol
  //

  Int_t colnumb = fgLutPadNumbering[ncol];

  fSignal[(nrow*fNumberOfChannels+colnumb)*fNtime+ntime]=value;

}

//________________________________________________________________________________
void AliTRDarraySignal::CreateLut()
{
  //
  // Initializes the Look Up Table to relate
  // pad numbering and mcm channel numbering
  //

  if(fgLutPadNumbering)  return;
  
   fgLutPadNumbering = new Short_t[AliTRDfeeParam::GetNcol()];
   memset(fgLutPadNumbering,0,sizeof(Short_t)*AliTRDfeeParam::GetNcol());

  for(Int_t mcm=0; mcm<8; mcm++)
    {
      Int_t lowerlimit=0+mcm*18;
      Int_t upperlimit=18+mcm*18;
      Int_t shiftposition = 1+3*mcm;
      for(Int_t index=lowerlimit;index<upperlimit;index++)
	{
	  fgLutPadNumbering[index]=index+shiftposition;
	}
    }
}
Commit	Line	Data
b65e5048	1	/*************************************************************************
	2	* Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id: AliTRDarraySignal.cxx 25392 2008-04-23 19:40:29Z cblume $ */
	17
	18	/////////////////////////////////////////////////////////
	19	// //
	20	// Container Class for Signals //
	21	// //
	22	// Author: //
	23	// Hermes Leon Vargas (hleon@ikf.uni-frankfurt.de) //
	24	// //
	25	/////////////////////////////////////////////////////////
	26
a9151110	27	#include <TArray.h>
a9151110	28
b65e5048	29	#include "AliTRDarraySignal.h"
acf20e8f	30	#include "AliTRDfeeParam.h"
b65e5048	31
	32	ClassImp(AliTRDarraySignal)
	33
f41a4d6a	34	Short_t *AliTRDarraySignal::fgLutPadNumbering = 0x0;
acf20e8f	35
b65e5048	36	//_______________________________________________________________________
	37	AliTRDarraySignal::AliTRDarraySignal()
	38	:TObject()
	39	,fNdet(0)
	40	,fNrow(0)
	41	,fNcol(0)
acf20e8f	42	,fNumberOfChannels(0)
b65e5048	43	,fNtime(0)
	44	,fNdim(0)
	45	,fSignal(0)
	46	{
	47
	48	//
	49	// AliTRDarraySignal default constructor
	50	//
acf20e8f	51
acf20e8f	52	CreateLut();
b65e5048	53
	54	}
	55
	56	//_______________________________________________________________________
	57	AliTRDarraySignal::AliTRDarraySignal(Int_t nrow, Int_t ncol,Int_t ntime)
	58	:TObject()
	59	,fNdet(0)
	60	,fNrow(0)
	61	,fNcol(0)
acf20e8f	62	,fNumberOfChannels(0)
b65e5048	63	,fNtime(0)
	64	,fNdim(0)
	65	,fSignal(0)
	66	{
	67	//
	68	// AliTRDarraySignal constructor
	69	//
acf20e8f	70
acf20e8f	71	CreateLut();
b65e5048	72	Allocate(nrow,ncol,ntime);
	73
	74	}
	75
	76	//_______________________________________________________________________
	77	AliTRDarraySignal::AliTRDarraySignal(const AliTRDarraySignal &d)
	78	:TObject()
	79	,fNdet(d.fNdet)
	80	,fNrow(d.fNrow)
	81	,fNcol(d.fNcol)
acf20e8f	82	,fNumberOfChannels(d.fNumberOfChannels)
b65e5048	83	,fNtime(d.fNtime)
	84	,fNdim(d.fNdim)
	85	,fSignal(0)
	86	{
	87	//
	88	// AliTRDarraySignal copy constructor
	89	//
	90
	91	fSignal = new Float_t[fNdim];
064d808d	92	memcpy(fSignal, d.fSignal, fNdim*sizeof(Float_t));
b65e5048	93
	94	}
	95
	96	//_______________________________________________________________________
	97	AliTRDarraySignal::~AliTRDarraySignal()
	98	{
	99	//
	100	// AliTRDarraySignal destructor
	101	//
	102
	103	if (fSignal)
	104	{
	105	delete [] fSignal;
	106	fSignal=0;
	107	}
	108
	109	}
	110
	111	//_______________________________________________________________________
	112	AliTRDarraySignal &AliTRDarraySignal::operator=(const AliTRDarraySignal &d)
	113	{
	114	//
	115	// Assignment operator
	116	//
	117
	118	if (this==&d)
	119	{
	120	return *this;
	121	}
	122
	123	if (fSignal)
	124	{
	125	delete [] fSignal;
	126	}
	127	fNdet=d.fNdet;
	128	fNrow=d.fNrow;
	129	fNcol=d.fNcol;
acf20e8f	130	fNumberOfChannels = d.fNumberOfChannels;
b65e5048	131	fNtime=d.fNtime;
	132	fNdim=d.fNdim;
	133	fSignal = new Float_t[fNdim];
064d808d	134	memcpy(fSignal,d.fSignal, fNdim*sizeof(Float_t));
b65e5048	135
	136	return *this;
	137
	138	}
	139
	140	//_______________________________________________________________________
	141	void AliTRDarraySignal::Allocate(Int_t nrow, Int_t ncol, Int_t ntime)
	142	{
	143	//
	144	// Allocates memory for an AliTRDarraySignal object with dimensions
acf20e8f	145	// RowNumberOfNecessaryMCMsADCchannelsInMCM*Time
acf20e8f	146	// To be consistent with AliTRDarrayADC
b65e5048	147	//
	148
	149	fNrow=nrow;
	150	fNcol=ncol;
	151	fNtime=ntime;
acf20e8f	152	Int_t adcchannelspermcm = AliTRDfeeParam::GetNadcMcm();
	153	Int_t padspermcm = AliTRDfeeParam::GetNcolMcm();
	154	Int_t numberofmcms = fNcol/padspermcm;
	155	fNumberOfChannels = numberofmcms*adcchannelspermcm;
	156	fNdim = nrowfNumberOfChannelsntime;
b65e5048	157	if (fSignal)
	158	{
	159	delete [] fSignal;
	160	}
	161	fSignal = new Float_t[fNdim];
064d808d	162	memset(fSignal,0,sizeof(Float_t)*fNdim);
b65e5048	163
	164	}
	165
	166	//_______________________________________________________________________
f41a4d6a	167	Int_t AliTRDarraySignal::GetOverThreshold(Float_t threshold) const
b65e5048	168	{
	169	//
	170	// Get the number of entries over the threshold
	171	//
	172
	173	Int_t counter=0;
	174	for(Int_t i=0; i<fNdim; i++)
	175	{
	176	if(fSignal[i]>threshold)
	177	{
	178	counter++;
	179	}
	180	}
	181	return counter;
	182
	183	}
	184
	185	//_______________________________________________________________________
	186	void AliTRDarraySignal::Compress(Float_t minval)
	187	{
	188	//
	189	// Compress the array, setting values equal or
	190	// below minval to zero (minval>=0)
	191	//
	192
	193	Int_t counter=0;
	194	Int_t newDim=0;
	195	Int_t j;
	196	Int_t r=0;
b65e5048	197	Int_t k=0;
b65e5048	198
024c0422	199	Int_t *longArr = new Int_t[fNdim];
b65e5048	200
024c0422	201	if(longArr)
b65e5048	202	{
b65e5048	203
024c0422	204	//Initialize the array
024c0422	205	memset(longArr,0,sizeof(Int_t)*fNdim);
b65e5048	206
024c0422	207	for(Int_t i=0;i<fNdim; i++)
	208	{
	209	j=0;
	210	if(fSignal[i]<=minval)
b65e5048	211	{
024c0422	212	for(k=i;k<fNdim;k++)
	213	{
	214	if(fSignal[k]<=minval)
	215	{
	216	j=j+1;
	217	longArr[r]=j;
	218	}
	219	else
	220	{
	221	break;
	222	}
	223	}
	224	r=r+1;
b65e5048	225	}
024c0422	226	i=i+j;
	227	}
	228
	229	//Calculate the size of the compressed array
	230	for(Int_t i=0; i<fNdim;i++)
	231	{
	232	if(longArr[i]!=0)
b65e5048	233	{
024c0422	234	counter=counter+longArr[i]-1;
	235	}
	236	}
	237	newDim=fNdim-counter; //New dimension
	238
	239	//Fill the buffer of the compressed array
	240	Float_t* buffer = new Float_t[newDim];
	241	Int_t counterTwo=0;
	242
	243	if(buffer)
	244	{
	245
	246	//Write the new array
	247	Int_t g=0;
	248	for(Int_t i=0; i<newDim; i++)
	249	{
	250	if(counterTwo<fNdim)
	251	{
	252	if(fSignal[counterTwo]>minval)
	253	{
	254	buffer[i]=fSignal[counterTwo];
	255	}
	256	if(fSignal[counterTwo]<=minval)
	257	{
	258	buffer[i]=-(longArr[g]);
	259	counterTwo=counterTwo+longArr[g]-1;
	260	g++;
	261	}
	262	counterTwo++;
	263	}
	264	}
	265
	266	//Copy the buffer
	267	if(fSignal)
	268	{
	269	delete [] fSignal;
	270	fSignal=0;
	271	}
	272	fSignal = new Float_t[newDim];
	273	fNdim = newDim;
	274	for(Int_t i=0; i<newDim; i++)
	275	{
	276	fSignal[i] = buffer[i];
	277	}
	278
	279	delete [] buffer;
	280	buffer=0;
	281
	282	}
b65e5048	283
b65e5048	284	delete [] longArr;
b65e5048	285	longArr=0;
024c0422	286
b65e5048	287	}
	288
	289	}
	290
	291	//_______________________________________________________________________
	292	void AliTRDarraySignal::Expand()
	293	{
	294	//
	295	// Expand the array
	296	//
	297
af63084f	298	if(fSignal)
b65e5048	299	{
b65e5048	300
af63084f	301	//Check if the array has not been already expanded
	302	Int_t verif=0;
	303	for(Int_t i=0; i<fNdim; i++)
	304	{
	305	if(fSignal[i]<0)
	306	{
	307	verif++;
	308	}
	309	}
b65e5048	310
af63084f	311	if(verif==0)
	312	{
	313	return;
	314	}
b65e5048	315
af63084f	316	Int_t dimexp=0;
af63084f	317	Int_t *longArr = new Int_t[fNdim];
b65e5048	318
af63084f	319	if(longArr)
b65e5048	320	{
af63084f	321
	322	memset(longArr,0,sizeof(Int_t)*fNdim);
	323
	324	Int_t r2=0;
	325	for(Int_t i=0; i<fNdim;i++)
	326	{
	327	if(fSignal[i]<0)
	328	{
	329	longArr[r2]=(Int_t)(-fSignal[i]);
	330	r2++;
	331	}
	332	}
	333
	334	//Calculate new dimensions
	335	for(Int_t i=0; i<fNdim;i++)
	336	{
	337	if(longArr[i]!=0)
	338	{
	339	dimexp=dimexp+longArr[i]-1;
	340	}
	341	}
	342	dimexp=dimexp+fNdim; //Dimension of the expanded array
	343
	344	//Write in the buffer the new array
	345	Int_t contaexp =0;
	346	Int_t h=0;
	347	Float_t* bufferE = new Float_t[dimexp];
	348
	349	if(bufferE)
b65e5048	350	{
af63084f	351
	352	for(Int_t i=0; i<dimexp; i++)
	353	{
	354	if(fSignal[contaexp]>0)
	355	{
	356	bufferE[i]=fSignal[contaexp];
	357	}
	358	if(fSignal[contaexp]<0)
	359	{
	360	for(Int_t j=0; j<longArr[h];j++)
	361	{
	362	bufferE[i+j]=0;
	363	}
	364	i=i+longArr[h]-1;
	365	h++;
	366	}
	367	contaexp++;
	368	}
	369
	370	//Copy the buffer
	371	delete [] fSignal;
	372	fSignal=0;
	373	fSignal = new Float_t[dimexp];
	374	fNdim = dimexp;
	375	for(Int_t i=0; i<dimexp; i++)
	376	{
	377	fSignal[i] = bufferE[i];
	378	}
	379
	380	delete [] bufferE;
	381
b65e5048	382	}
b65e5048	383
af63084f	384	delete [] longArr;
b65e5048	385
af63084f	386	}
b65e5048	387
af63084f	388	}
b65e5048	389
b65e5048	390	}
705d9e7b	391	//________________________________________________________________________________
	392	void AliTRDarraySignal::Reset()
	393	{
	394	//
	395	// Reset the array, the old contents are deleted
	396	// The array keeps the same dimensions as before
	397	//
	398
	399	memset(fSignal,0,sizeof(Float_t)*fNdim);
	400
	401	}
acf20e8f	402	//________________________________________________________________________________
	403	Float_t AliTRDarraySignal::GetData(Int_t nrow, Int_t ncol, Int_t ntime) const
	404	{
	405	//
	406	// Get the data using the pad numbering.
	407	// To access data using the mcm scheme use instead
	408	// the method GetDataByAdcCol
	409	//
	410
f41a4d6a	411	Int_t corrcolumn = fgLutPadNumbering[ncol];
acf20e8f	412
	413	return fSignal[(nrowfNumberOfChannels+corrcolumn)fNtime+ntime];
	414
	415	}
	416	//________________________________________________________________________________
	417	void AliTRDarraySignal::SetData(Int_t nrow, Int_t ncol, Int_t ntime, Float_t value)
	418	{
	419	//
	420	// Set the data using the pad numbering.
	421	// To write data using the mcm scheme use instead
	422	// the method SetDataByAdcCol
	423	//
	424
f41a4d6a	425	Int_t colnumb = fgLutPadNumbering[ncol];
acf20e8f	426
	427	fSignal[(nrowfNumberOfChannels+colnumb)fNtime+ntime]=value;
	428
	429	}
	430
	431	//________________________________________________________________________________
	432	void AliTRDarraySignal::CreateLut()
	433	{
	434	//
	435	// Initializes the Look Up Table to relate
	436	// pad numbering and mcm channel numbering
	437	//
	438
f41a4d6a	439	if(fgLutPadNumbering) return;
acf20e8f	440
f41a4d6a	441	fgLutPadNumbering = new Short_t[AliTRDfeeParam::GetNcol()];
f41a4d6a	442	memset(fgLutPadNumbering,0,sizeof(Short_t)*AliTRDfeeParam::GetNcol());
acf20e8f	443
	444	for(Int_t mcm=0; mcm<8; mcm++)
	445	{
	446	Int_t lowerlimit=0+mcm*18;
	447	Int_t upperlimit=18+mcm*18;
	448	Int_t shiftposition = 1+3*mcm;
	449	for(Int_t index=lowerlimit;index<upperlimit;index++)
	450	{
f41a4d6a	451	fgLutPadNumbering[index]=index+shiftposition;
acf20e8f	452	}
	453	}
	454	}