[u/mrichter/AliRoot.git] / TPC / AliTPCRF1D.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/

/* $Id$ */


//-----------------------------------------------------------------------------
//
//
//
//  Origin:   Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk
//
//  Declaration of class AliTPCRF1D
//
//-----------------------------------------------------------------------------

//

#include <Riostream.h>
#include <TCanvas.h>
#include <TClass.h>
#include <TF2.h>
#include <TH1.h>
#include <TMath.h>
#include <TPad.h>
#include <TString.h>
#include <TStyle.h>

#include "AliTPCRF1D.h"

extern TStyle * gStyle; 

Int_t   AliTPCRF1D::fgNRF=100;  //default  number of interpolation points
Float_t AliTPCRF1D::fgRFDSTEP=0.01; //default step in cm

static Double_t funGauss(Double_t *x, Double_t * par)
{
  //Gauss function  -needde by the generic function object 
  return TMath::Exp(-(x[0]*x[0])/(2*par[0]*par[0]));
}

static Double_t funCosh(Double_t *x, Double_t * par)
{
  //Cosh function  -needde by the generic function object 
  return 1/TMath::CosH(3.14159*x[0]/(2*par[0]));  
}    

static Double_t funGati(Double_t *x, Double_t * par)
{
  //Gati function  -needde by the generic function object 
  Float_t k3=par[1];
  Float_t k3R=TMath::Sqrt(k3);
  Float_t k2=(TMath::Pi()/2)*(1-k3R/2.);
  Float_t k1=k2*k3R/(4*TMath::ATan(k3R));
  Float_t l=x[0]/par[0];
  Float_t tan2=TMath::TanH(k2*l);
  tan2*=tan2;
  Float_t res = k1*(1-tan2)/(1+k3*tan2);  
  return res;  
}    

///////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////

ClassImp(AliTPCRF1D)


AliTPCRF1D::AliTPCRF1D(Bool_t direct,Int_t np,Float_t step)
           :TObject(),
	    fNRF(0),
            fDSTEPM1(0.),
            fcharge(0),
            forigsigma(0.),
            fpadWidth(3.5),
            fkNorm(0.5),
            fInteg(0.),
            fGRF(0),
            fSigma(0.),
            fOffset(0.),
            fDirect(kFALSE),
            fPadDistance(0.)
{
  //default constructor for response function object
  fDirect=direct;
  if (np!=0)fNRF = np;
  else (fNRF=fgNRF);
  fcharge = new Float_t[fNRF];
  if (step>0) fDSTEPM1=1./step;
  else fDSTEPM1 = 1./fgRFDSTEP;
}

AliTPCRF1D::AliTPCRF1D(const AliTPCRF1D &prf)
           :TObject(prf),
	    fNRF(0),
            fDSTEPM1(0.),
            fcharge(0),
            forigsigma(0.),
            fpadWidth(3.5),
            fkNorm(0.5),
            fInteg(0.),
            fGRF(0),
            fSigma(0.),
            fOffset(0.),
            fDirect(kFALSE),
            fPadDistance(0.)
{
  
  //
  memcpy(this, &prf, sizeof(prf)); 
  fcharge = new Float_t[fNRF];
  memcpy(fcharge,prf.fcharge, fNRF);
  fGRF = new TF1(*(prf.fGRF));
  //PH Change the name (add 0 to the end)
  TString s(fGRF->GetName());
  s+="0";
  fGRF->SetName(s.Data());
}

AliTPCRF1D & AliTPCRF1D::operator = (const AliTPCRF1D &prf)
{
  //  
  if (fcharge) delete fcharge;
  if (fGRF) delete fGRF;
  memcpy(this, &prf, sizeof(prf)); 
  fcharge = new Float_t[fNRF];
  memcpy(fcharge,prf.fcharge, fNRF);
  fGRF = new TF1(*(prf.fGRF));
   //PH Change the name (add 0 to the end)
  TString s(fGRF->GetName());
  s+="0";
  fGRF->SetName(s.Data());
  return (*this);
}


AliTPCRF1D::~AliTPCRF1D()
{
  //
  if (fcharge!=0) delete [] fcharge;
  if (fGRF !=0 ) fGRF->Delete();
}

Float_t AliTPCRF1D::GetRF(Float_t xin)
{
  //function which return response
  //for the charge in distance xin 
  //return linear aproximation of RF
  Float_t x = TMath::Abs((xin-fOffset)*fDSTEPM1)+fNRF/2;
  Int_t i1=Int_t(x);
  if (x<0) i1-=1;
  Float_t res=0;
  if (i1+1<fNRF)
    res = fcharge[i1]*(Float_t(i1+1)-x)+fcharge[i1+1]*(x-Float_t(i1));    
  return res;
}

Float_t  AliTPCRF1D::GetGRF(Float_t xin)
{  
  //function which returnoriginal charge distribution
  //this function is just normalised for fKnorm
  if (fGRF != 0 ) 
    return fkNorm*fGRF->Eval(xin)/fInteg;
      else
    return 0.;
}

   
void AliTPCRF1D::SetParam( TF1 * GRF,Float_t padwidth,
		       Float_t kNorm, Float_t sigma)
{
  //adjust parameters of the original charge distribution
  //and pad size parameters
   fpadWidth = padwidth;
   fGRF = GRF;
   fkNorm = kNorm;
   if (sigma==0) sigma= fpadWidth/TMath::Sqrt(12.);
   forigsigma=sigma;
   fDSTEPM1 = 10/TMath::Sqrt(sigma*sigma+fpadWidth*fpadWidth/12); 
   sprintf(fType,"User");
   //   Update();   
}
  

void AliTPCRF1D::SetGauss(Float_t sigma, Float_t padWidth,
		      Float_t kNorm)
{
  // 
  // set parameters for Gauss generic charge distribution
  //
  fpadWidth = padWidth;
  fkNorm = kNorm;
  if (fGRF !=0 ) fGRF->Delete();
  fGRF = new TF1("funGauss",funGauss,-5,5,1);
  funParam[0]=sigma;
  forigsigma=sigma;
  fGRF->SetParameters(funParam);
   fDSTEPM1 = 10./TMath::Sqrt(sigma*sigma+fpadWidth*fpadWidth/12); 
  //by default I set the step as one tenth of sigma  
  sprintf(fType,"Gauss");
}

void AliTPCRF1D::SetCosh(Float_t sigma, Float_t padWidth,
		     Float_t kNorm)
{
  // 
  // set parameters for Cosh generic charge distribution
  //
  fpadWidth = padWidth;
  fkNorm = kNorm;
  if (fGRF !=0 ) fGRF->Delete();
  fGRF = new TF1("funCosh",	funCosh, -5.,5.,2);   
  funParam[0]=sigma;
  fGRF->SetParameters(funParam);
  forigsigma=sigma;
  fDSTEPM1 = 10./TMath::Sqrt(sigma*sigma+fpadWidth*fpadWidth/12); 
  //by default I set the step as one tenth of sigma
  sprintf(fType,"Cosh");
}

void AliTPCRF1D::SetGati(Float_t K3, Float_t padDistance, Float_t padWidth,
		     Float_t kNorm)
{
  // 
  // set parameters for Gati generic charge distribution
  //
  fpadWidth = padWidth;
  fkNorm = kNorm;
  if (fGRF !=0 ) fGRF->Delete();
  fGRF = new TF1("funGati",	funGati, -5.,5.,2);   
  funParam[0]=padDistance;
  funParam[1]=K3;  
  fGRF->SetParameters(funParam);
  forigsigma=padDistance;
  fDSTEPM1 = 10./TMath::Sqrt(padDistance*padDistance+fpadWidth*fpadWidth/12); 
  //by default I set the step as one tenth of sigma
  sprintf(fType,"Gati");
}

void AliTPCRF1D::DrawRF(Float_t x1,Float_t x2,Int_t N)
{ 
  //
  //Draw prf in selected region <x1,x2> with nuber of diviision = n
  //
  char s[100];
  TCanvas  * c1 = new TCanvas("canRF","Pad response function",700,900);
  c1->cd();
  TPad * pad1 = new TPad("pad1RF","",0.05,0.55,0.95,0.95,21);
  pad1->Draw();
  TPad * pad2 = new TPad("pad2RF","",0.05,0.05,0.95,0.45,21);
  pad2->Draw();

  sprintf(s,"RF response function for %1.2f cm pad width",
	  fpadWidth);  
  pad1->cd();
  TH1F * hRFo = new TH1F("hRFo","Original charge distribution",N+1,x1,x2);
  pad2->cd();
   gStyle->SetOptFit(1);
   gStyle->SetOptStat(0); 
  TH1F * hRFc = new TH1F("hRFc",s,N+1,x1,x2);
  Float_t x=x1;
  Float_t y1;
  Float_t y2;

  for (Float_t i = 0;i<N+1;i++)
    {
      x+=(x2-x1)/Float_t(N);
      y1 = GetRF(x);
      hRFc->Fill(x,y1);
      y2 = GetGRF(x);
      hRFo->Fill(x,y2);      
    };
  pad1->cd();
  hRFo->Fit("gaus");
  pad2->cd();
  hRFc->Fit("gaus");
}

void AliTPCRF1D::Update()
{
  //
  //update fields  with interpolated values for
  //PRF calculation

  //at the begining initialize to 0
  for (Int_t i =0; i<fNRF;i++)  fcharge[i] = 0;
  if ( fGRF == 0 ) return;
  fInteg  = fGRF->Integral(-5*forigsigma,5*forigsigma,funParam,0.00001);
  if ( fInteg == 0 ) fInteg = 1; 
  if (fDirect==kFALSE){
  //integrate charge over pad for different distance of pad
  for (Int_t i =0; i<fNRF;i++)
    {      //x in cm fpadWidth in cm
      Float_t x = (Float_t)(i-fNRF/2)/fDSTEPM1;
      Float_t x1=TMath::Max(x-fpadWidth/2,-5*forigsigma);
      Float_t x2=TMath::Min(x+fpadWidth/2,5*forigsigma);
      fcharge[i] = 
	fkNorm*fGRF->Integral(x1,x2,funParam,0.0001)/fInteg;
    };   
  }
  else{
    for (Int_t i =0; i<fNRF;i++)
      {      //x in cm fpadWidth in cm
	Float_t x = (Float_t)(i-fNRF/2)/fDSTEPM1;
	fcharge[i] = fkNorm*fGRF->Eval(x);
      };   
  }  
  fSigma = 0; 
  Float_t sum =0;
  Float_t mean=0;
  for (Float_t  x =-fNRF/fDSTEPM1; x<fNRF/fDSTEPM1;x+=1/fDSTEPM1)
    {      //x in cm fpadWidth in cm
      Float_t weight = GetRF(x+fOffset);
      fSigma+=x*x*weight; 
      mean+=x*weight;
      sum+=weight;
    };  
  if (sum>0){
    mean/=sum;
    fSigma = TMath::Sqrt(fSigma/sum-mean*mean);   
  }
  else fSigma=0; 
}

void AliTPCRF1D::Streamer(TBuffer &R__b)
{
   // Stream an object of class AliTPCRF1D.
   if (R__b.IsReading()) {
      AliTPCRF1D::Class()->ReadBuffer(R__b, this);
      //read functions
 
      if (strncmp(fType,"Gauss",3)==0) {delete fGRF; fGRF = new TF1("funGauss",funGauss,-5.,5.,4);}
      if (strncmp(fType,"Cosh",3)==0)  {delete fGRF; fGRF = new TF1("funCosh",funCosh,-5.,5.,4);}
      if (strncmp(fType,"Gati",3)==0)  {delete fGRF; fGRF = new TF1("funGati",funGati,-5.,5.,4);}  
      if (fGRF) fGRF->SetParameters(funParam);     

   } else {
      AliTPCRF1D::Class()->WriteBuffer(R__b, this);
   }
}
Commit	Line	Data
4c039060	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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
88cb7938	16	/* $Id$ */
19364939	17
4c039060	18
8c555625	19	//-----------------------------------------------------------------------------
73042f01	20	//
8c555625	21	//
	22	//
	23	// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk
	24	//
	25	// Declaration of class AliTPCRF1D
	26	//
	27	//-----------------------------------------------------------------------------
cc80f89e	28
73042f01	29	//
73042f01	30
19364939	31	#include <Riostream.h>
a1e17193	32	#include <TCanvas.h>
	33	#include <TClass.h>
	34	#include <TF2.h>
	35	#include <TH1.h>
	36	#include <TMath.h>
	37	#include <TPad.h>
2a336e15	38	#include <TString.h>
a1e17193	39	#include <TStyle.h>
	40
	41	#include "AliTPCRF1D.h"
8c555625	42
73042f01	43	extern TStyle * gStyle;
	44
	45	Int_t AliTPCRF1D::fgNRF=100; //default number of interpolation points
	46	Float_t AliTPCRF1D::fgRFDSTEP=0.01; //default step in cm
8c555625	47
	48	static Double_t funGauss(Double_t x, Double_t par)
	49	{
cc80f89e	50	//Gauss function -needde by the generic function object
8c555625	51	return TMath::Exp(-(x[0]x[0])/(2par[0]*par[0]));
	52	}
	53
	54	static Double_t funCosh(Double_t x, Double_t par)
	55	{
cc80f89e	56	//Cosh function -needde by the generic function object
8c555625	57	return 1/TMath::CosH(3.14159x[0]/(2par[0]));
	58	}
	59
	60	static Double_t funGati(Double_t x, Double_t par)
	61	{
cc80f89e	62	//Gati function -needde by the generic function object
73042f01	63	Float_t k3=par[1];
	64	Float_t k3R=TMath::Sqrt(k3);
	65	Float_t k2=(TMath::Pi()/2)*(1-k3R/2.);
	66	Float_t k1=k2k3R/(4TMath::ATan(k3R));
8c555625	67	Float_t l=x[0]/par[0];
73042f01	68	Float_t tan2=TMath::TanH(k2*l);
8c555625	69	tan2*=tan2;
73042f01	70	Float_t res = k1(1-tan2)/(1+k3tan2);
8c555625	71	return res;
	72	}
	73
8c555625	74	///////////////////////////////////////////////////////////////////////////
	75	///////////////////////////////////////////////////////////////////////////
	76
8c555625	77	ClassImp(AliTPCRF1D)
	78
	79
	80	AliTPCRF1D::AliTPCRF1D(Bool_t direct,Int_t np,Float_t step)
179c6296	81	:TObject(),
	82	fNRF(0),
	83	fDSTEPM1(0.),
	84	fcharge(0),
	85	forigsigma(0.),
	86	fpadWidth(3.5),
	87	fkNorm(0.5),
	88	fInteg(0.),
	89	fGRF(0),
	90	fSigma(0.),
	91	fOffset(0.),
	92	fDirect(kFALSE),
	93	fPadDistance(0.)
8c555625	94	{
cc80f89e	95	//default constructor for response function object
8c555625	96	fDirect=direct;
73042f01	97	if (np!=0)fNRF = np;
73042f01	98	else (fNRF=fgNRF);
8c555625	99	fcharge = new Float_t[fNRF];
73042f01	100	if (step>0) fDSTEPM1=1./step;
73042f01	101	else fDSTEPM1 = 1./fgRFDSTEP;
8c555625	102	}
8c555625	103
179c6296	104	AliTPCRF1D::AliTPCRF1D(const AliTPCRF1D &prf)
	105	:TObject(prf),
	106	fNRF(0),
	107	fDSTEPM1(0.),
	108	fcharge(0),
	109	forigsigma(0.),
	110	fpadWidth(3.5),
	111	fkNorm(0.5),
	112	fInteg(0.),
	113	fGRF(0),
	114	fSigma(0.),
	115	fOffset(0.),
	116	fDirect(kFALSE),
	117	fPadDistance(0.)
73042f01	118	{
176aff27	119
73042f01	120	//
	121	memcpy(this, &prf, sizeof(prf));
	122	fcharge = new Float_t[fNRF];
	123	memcpy(fcharge,prf.fcharge, fNRF);
2a336e15	124	fGRF = new TF1(*(prf.fGRF));
	125	//PH Change the name (add 0 to the end)
	126	TString s(fGRF->GetName());
	127	s+="0";
	128	fGRF->SetName(s.Data());
73042f01	129	}
	130
	131	AliTPCRF1D & AliTPCRF1D::operator = (const AliTPCRF1D &prf)
	132	{
	133	//
	134	if (fcharge) delete fcharge;
	135	if (fGRF) delete fGRF;
	136	memcpy(this, &prf, sizeof(prf));
	137	fcharge = new Float_t[fNRF];
	138	memcpy(fcharge,prf.fcharge, fNRF);
	139	fGRF = new TF1(*(prf.fGRF));
2a336e15	140	//PH Change the name (add 0 to the end)
	141	TString s(fGRF->GetName());
	142	s+="0";
	143	fGRF->SetName(s.Data());
73042f01	144	return (*this);
	145	}
	146
	147
8c555625	148
	149	AliTPCRF1D::~AliTPCRF1D()
	150	{
73042f01	151	//
cc80f89e	152	if (fcharge!=0) delete [] fcharge;
8c555625	153	if (fGRF !=0 ) fGRF->Delete();
	154	}
	155
	156	Float_t AliTPCRF1D::GetRF(Float_t xin)
	157	{
cc80f89e	158	//function which return response
cc80f89e	159	//for the charge in distance xin
8c555625	160	//return linear aproximation of RF
	161	Float_t x = TMath::Abs((xin-fOffset)*fDSTEPM1)+fNRF/2;
	162	Int_t i1=Int_t(x);
	163	if (x<0) i1-=1;
	164	Float_t res=0;
	165	if (i1+1<fNRF)
	166	res = fcharge[i1](Float_t(i1+1)-x)+fcharge[i1+1](x-Float_t(i1));
	167	return res;
	168	}
	169
	170	Float_t AliTPCRF1D::GetGRF(Float_t xin)
	171	{
cc80f89e	172	//function which returnoriginal charge distribution
cc80f89e	173	//this function is just normalised for fKnorm
8c555625	174	if (fGRF != 0 )
	175	return fkNorm*fGRF->Eval(xin)/fInteg;
	176	else
	177	return 0.;
	178	}
	179
	180
	181	void AliTPCRF1D::SetParam( TF1 * GRF,Float_t padwidth,
	182	Float_t kNorm, Float_t sigma)
	183	{
cc80f89e	184	//adjust parameters of the original charge distribution
cc80f89e	185	//and pad size parameters
8c555625	186	fpadWidth = padwidth;
	187	fGRF = GRF;
	188	fkNorm = kNorm;
	189	if (sigma==0) sigma= fpadWidth/TMath::Sqrt(12.);
	190	forigsigma=sigma;
	191	fDSTEPM1 = 10/TMath::Sqrt(sigmasigma+fpadWidthfpadWidth/12);
	192	sprintf(fType,"User");
	193	// Update();
	194	}
	195
	196
	197	void AliTPCRF1D::SetGauss(Float_t sigma, Float_t padWidth,
	198	Float_t kNorm)
	199	{
cc80f89e	200	//
	201	// set parameters for Gauss generic charge distribution
	202	//
8c555625	203	fpadWidth = padWidth;
	204	fkNorm = kNorm;
	205	if (fGRF !=0 ) fGRF->Delete();
2a336e15	206	fGRF = new TF1("funGauss",funGauss,-5,5,1);
8c555625	207	funParam[0]=sigma;
	208	forigsigma=sigma;
	209	fGRF->SetParameters(funParam);
	210	fDSTEPM1 = 10./TMath::Sqrt(sigmasigma+fpadWidthfpadWidth/12);
cc80f89e	211	//by default I set the step as one tenth of sigma
8c555625	212	sprintf(fType,"Gauss");
	213	}
	214
	215	void AliTPCRF1D::SetCosh(Float_t sigma, Float_t padWidth,
	216	Float_t kNorm)
	217	{
cc80f89e	218	//
	219	// set parameters for Cosh generic charge distribution
	220	//
8c555625	221	fpadWidth = padWidth;
	222	fkNorm = kNorm;
	223	if (fGRF !=0 ) fGRF->Delete();
2a336e15	224	fGRF = new TF1("funCosh", funCosh, -5.,5.,2);
8c555625	225	funParam[0]=sigma;
	226	fGRF->SetParameters(funParam);
	227	forigsigma=sigma;
	228	fDSTEPM1 = 10./TMath::Sqrt(sigmasigma+fpadWidthfpadWidth/12);
	229	//by default I set the step as one tenth of sigma
8c555625	230	sprintf(fType,"Cosh");
	231	}
	232
	233	void AliTPCRF1D::SetGati(Float_t K3, Float_t padDistance, Float_t padWidth,
	234	Float_t kNorm)
	235	{
cc80f89e	236	//
	237	// set parameters for Gati generic charge distribution
	238	//
8c555625	239	fpadWidth = padWidth;
	240	fkNorm = kNorm;
	241	if (fGRF !=0 ) fGRF->Delete();
2a336e15	242	fGRF = new TF1("funGati", funGati, -5.,5.,2);
8c555625	243	funParam[0]=padDistance;
	244	funParam[1]=K3;
	245	fGRF->SetParameters(funParam);
	246	forigsigma=padDistance;
	247	fDSTEPM1 = 10./TMath::Sqrt(padDistancepadDistance+fpadWidthfpadWidth/12);
	248	//by default I set the step as one tenth of sigma
8c555625	249	sprintf(fType,"Gati");
	250	}
	251
73042f01	252	void AliTPCRF1D::DrawRF(Float_t x1,Float_t x2,Int_t N)
8c555625	253	{
cc80f89e	254	//
	255	//Draw prf in selected region <x1,x2> with nuber of diviision = n
	256	//
8c555625	257	char s[100];
	258	TCanvas * c1 = new TCanvas("canRF","Pad response function",700,900);
	259	c1->cd();
	260	TPad * pad1 = new TPad("pad1RF","",0.05,0.55,0.95,0.95,21);
	261	pad1->Draw();
	262	TPad * pad2 = new TPad("pad2RF","",0.05,0.05,0.95,0.45,21);
	263	pad2->Draw();
	264
	265	sprintf(s,"RF response function for %1.2f cm pad width",
	266	fpadWidth);
	267	pad1->cd();
	268	TH1F * hRFo = new TH1F("hRFo","Original charge distribution",N+1,x1,x2);
	269	pad2->cd();
	270	gStyle->SetOptFit(1);
	271	gStyle->SetOptStat(0);
	272	TH1F * hRFc = new TH1F("hRFc",s,N+1,x1,x2);
	273	Float_t x=x1;
	274	Float_t y1;
	275	Float_t y2;
	276
	277	for (Float_t i = 0;i<N+1;i++)
	278	{
	279	x+=(x2-x1)/Float_t(N);
	280	y1 = GetRF(x);
	281	hRFc->Fill(x,y1);
	282	y2 = GetGRF(x);
	283	hRFo->Fill(x,y2);
	284	};
	285	pad1->cd();
	286	hRFo->Fit("gaus");
	287	pad2->cd();
	288	hRFc->Fit("gaus");
	289	}
	290
	291	void AliTPCRF1D::Update()
	292	{
cc80f89e	293	//
	294	//update fields with interpolated values for
	295	//PRF calculation
	296
	297	//at the begining initialize to 0
8c555625	298	for (Int_t i =0; i<fNRF;i++) fcharge[i] = 0;
	299	if ( fGRF == 0 ) return;
	300	fInteg = fGRF->Integral(-5forigsigma,5forigsigma,funParam,0.00001);
	301	if ( fInteg == 0 ) fInteg = 1;
	302	if (fDirect==kFALSE){
	303	//integrate charge over pad for different distance of pad
	304	for (Int_t i =0; i<fNRF;i++)
	305	{ //x in cm fpadWidth in cm
	306	Float_t x = (Float_t)(i-fNRF/2)/fDSTEPM1;
	307	Float_t x1=TMath::Max(x-fpadWidth/2,-5*forigsigma);
	308	Float_t x2=TMath::Min(x+fpadWidth/2,5*forigsigma);
	309	fcharge[i] =
	310	fkNorm*fGRF->Integral(x1,x2,funParam,0.0001)/fInteg;
	311	};
	312	}
	313	else{
	314	for (Int_t i =0; i<fNRF;i++)
	315	{ //x in cm fpadWidth in cm
	316	Float_t x = (Float_t)(i-fNRF/2)/fDSTEPM1;
	317	fcharge[i] = fkNorm*fGRF->Eval(x);
	318	};
	319	}
	320	fSigma = 0;
	321	Float_t sum =0;
	322	Float_t mean=0;
	323	for (Float_t x =-fNRF/fDSTEPM1; x<fNRF/fDSTEPM1;x+=1/fDSTEPM1)
	324	{ //x in cm fpadWidth in cm
	325	Float_t weight = GetRF(x+fOffset);
	326	fSigma+=xxweight;
	327	mean+=x*weight;
	328	sum+=weight;
	329	};
	330	if (sum>0){
	331	mean/=sum;
	332	fSigma = TMath::Sqrt(fSigma/sum-mean*mean);
	333	}
	334	else fSigma=0;
	335	}
	336
	337	void AliTPCRF1D::Streamer(TBuffer &R__b)
	338	{
cc80f89e	339	// Stream an object of class AliTPCRF1D.
8c555625	340	if (R__b.IsReading()) {
2ab0c725	341	AliTPCRF1D::Class()->ReadBuffer(R__b, this);
8c555625	342	//read functions
8c555625	343
2a336e15	344	if (strncmp(fType,"Gauss",3)==0) {delete fGRF; fGRF = new TF1("funGauss",funGauss,-5.,5.,4);}
	345	if (strncmp(fType,"Cosh",3)==0) {delete fGRF; fGRF = new TF1("funCosh",funCosh,-5.,5.,4);}
	346	if (strncmp(fType,"Gati",3)==0) {delete fGRF; fGRF = new TF1("funGati",funGati,-5.,5.,4);}
2ab0c725	347	if (fGRF) fGRF->SetParameters(funParam);
8c555625	348
8c555625	349	} else {
2ab0c725	350	AliTPCRF1D::Class()->WriteBuffer(R__b, this);
8c555625	351	}
	352	}
	353