[u/mrichter/AliRoot.git] / PWG0 / AliCorrectionMatrix2D.cxx

/* $Id$ */

// ------------------------------------------------------
//
// Class to handle 2d-corrections.
//
// ------------------------------------------------------
//

#include <TH2F.h>

#include <AliLog.h>

#include "AliCorrectionMatrix2D.h"

//____________________________________________________________________
ClassImp(AliCorrectionMatrix2D)

//____________________________________________________________________
AliCorrectionMatrix2D::AliCorrectionMatrix2D() :
  AliCorrectionMatrix()
{
  // default constructor
}

//____________________________________________________________________
AliCorrectionMatrix2D::AliCorrectionMatrix2D(const AliCorrectionMatrix2D& c)
  : AliCorrectionMatrix(c)
{
  // copy constructor
  ((AliCorrectionMatrix2D &)c).Copy(*this);
}

//____________________________________________________________________
AliCorrectionMatrix2D &AliCorrectionMatrix2D::operator=(const AliCorrectionMatrix2D &c)
{
  // assigment operator

  if (this != &c)
    ((AliCorrectionMatrix2D &) c).Copy(*this);

  return *this;
}

//____________________________________________________________________
AliCorrectionMatrix2D::AliCorrectionMatrix2D(const Char_t* name, const Char_t* title,
				       Int_t nBinX, Float_t Xmin, Float_t Xmax,
				       Int_t nBinY, Float_t Ymin, Float_t Ymax) 
  : AliCorrectionMatrix(name, title)
{
  //
  // constructor
  //

  // do not add this hists to the directory
  Bool_t oldStatus = TH1::AddDirectoryStatus();
  TH1::AddDirectory(kFALSE);

  fhMeas  = new TH2F("measured",   Form("%s measured", GetTitle()),   nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);
  fhGene  = new TH2F("generated",  Form("%s generated", GetTitle()),  nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);
  fhCorr  = new TH2F("correction", Form("%s correction", GetTitle()), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);

  TH1::AddDirectory(oldStatus);

  fhMeas->Sumw2();
  fhGene->Sumw2();
  fhCorr->Sumw2();
}

//____________________________________________________________________
AliCorrectionMatrix2D::AliCorrectionMatrix2D(const Char_t* name, const Char_t* title,
				       Int_t nBinX, Float_t *X, Int_t nBinY, Float_t *Y) 
  : AliCorrectionMatrix(name, title)
{
  //
  // constructor
  //

  // do not add this hists to the directory
  Bool_t oldStatus = TH1::AddDirectoryStatus();
  TH1::AddDirectory(kFALSE);

	fhMeas  = new TH2F("measured",   Form("%s measured",title),   nBinX, X, nBinY, Y);
  fhGene  = new TH2F("generated",  Form("%s generated",title),  nBinX, X, nBinY, Y);
  fhCorr  = new TH2F("correction", Form("%s correction",title), nBinX, X, nBinY, Y);

  TH1::AddDirectory(oldStatus);

	fhMeas->Sumw2();
  fhGene->Sumw2();
  fhCorr->Sumw2();
}

//____________________________________________________________________
AliCorrectionMatrix2D::~AliCorrectionMatrix2D()
{
  //
  // destructor
  //

  // histograms already deleted in base class
}

TH2* AliCorrectionMatrix2D::GetGeneratedHistogram() const
{
  // return generated histogram casted to correct type
  return dynamic_cast<TH2*> (fhGene);
}

TH2* AliCorrectionMatrix2D::GetMeasuredHistogram() const
{
  // return measured histogram casted to correct type
  return dynamic_cast<TH2*> (fhMeas);
}

//____________________________________________________________________
TH1* AliCorrectionMatrix2D::Get1DCorrectionHistogram(Char_t* opt, Float_t min, Float_t max)
{
  //
  // integrate the correction over one variable 
  // 

  TH1D* meas1D = 0;
  TH1D* gene1D = 0; 

  if (strcmp(opt,"x")==0) {
    Int_t binMin = fhMeas->GetYaxis()->FindBin(min);
    Int_t binMax = fhGene->GetYaxis()->FindBin(max);

    if (min>=max) {
      meas1D = ((TH2F*)fhMeas)->ProjectionX();
      gene1D = ((TH2F*)fhGene)->ProjectionX();
    }
    else {
      Printf("Getting 1D map. Including y-bins %d to %d", binMin, binMax);

      meas1D = ((TH2F*)fhMeas)->ProjectionX(Form("%s_x_pm", GetName()),binMin,binMax);
      gene1D = ((TH2F*)fhGene)->ProjectionX(Form("%s_x_pg", GetName()),binMin,binMax);
    }
  }
  else if (strcmp(opt,"y")==0) {
    Int_t binMin = fhMeas->GetXaxis()->FindBin(min);
    Int_t binMax = fhMeas->GetXaxis()->FindBin(max);

    if (min>=max) {
      meas1D = ((TH2F*)fhMeas)->ProjectionY();
      gene1D = ((TH2F*)fhGene)->ProjectionY();
    }
    else {
      Printf("Getting 1D map. Including x-bins %d to %d \n", binMin, binMax);

      meas1D = ((TH2F*)fhMeas)->ProjectionY(Form("%s_y_pm", GetName()), binMin, binMax);
      gene1D = ((TH2F*)fhGene)->ProjectionY(Form("%s_y_pg", GetName()), binMin, binMax);
    }
  }
  else {
    Printf("ERROR: Invalid option");
    return 0;
  }

  gene1D->Sumw2();

  gene1D->SetName(Form("corr_1D_%s",fName.Data()));
  gene1D->SetTitle(Form("corr_1D_%s",fName.Data()));

  gene1D->Divide(gene1D, meas1D, 1, 1, "B");
  
  return (TH1F*)gene1D;   
}

//____________________________________________________________________
void AliCorrectionMatrix2D::FillMeas(Float_t ax, Float_t ay)
{
  // add value to measured histogram
  ((TH2F*)fhMeas)->Fill(ax, ay);
}

//____________________________________________________________________
void AliCorrectionMatrix2D::FillGene(Float_t ax, Float_t ay)
{
  // add value to generated histogram
  ((TH2F*)fhGene)->Fill(ax, ay);
}

//____________________________________________________________________
Float_t AliCorrectionMatrix2D::GetCorrection(Float_t ax, Float_t ay) const
{
  // returns a value of the correction map
  return fhCorr->GetBinContent(fhCorr->FindBin(ax,ay));
}

//____________________________________________________________________
void AliCorrectionMatrix2D::RemoveEdges(Float_t cut, Int_t nBinsXedge, Int_t nBinsYedge)
{
  // remove edges of correction histogram by removing 
  // - bins with content less than cut
  // - bins next to bins with zero bin content
  
  Int_t nBinsX = fhCorr->GetNbinsX();
  Int_t nBinsY = fhCorr->GetNbinsY();

  // set bin content to zero for bins with content smaller cut
  for (Int_t bx=0; bx<=nBinsX; bx++) {
    for (Int_t by=0; by<=nBinsY; by++) {
      if (fhCorr->GetBinContent(bx,by)>cut) {
	  fhCorr->SetBinContent(bx,by,0);
	  fhCorr->SetBinError(bx,by,0);
      }
    }
  }

  // set bin content to zero for bins next to bins with zero
  TH2F* tmp = (TH2F*)fhCorr->Clone("tmp");
  tmp->Reset();
  
  Bool_t done = kFALSE;
  Int_t nBinsXCount = 0;
  Int_t nBinsYCount = 0;
  while (!done) {    
    if (nBinsXCount<nBinsXedge) 
      for (Int_t bx=0; bx<=nBinsX; bx++) {
	for (Int_t by=0; by<=nBinsY; by++) {
	  if ((fhCorr->GetBinContent(bx+1,by)==0)|| 
	      (fhCorr->GetBinContent(bx-1,by)==0))
	    tmp->SetBinContent(bx,by,1);	
	  
	}
      }
    if (nBinsYCount<nBinsYedge) 
      for (Int_t bx=0; bx<=nBinsX; bx++) {
	for (Int_t by=0; by<=nBinsY; by++) {
	  if ((fhCorr->GetBinContent(bx,by+1)==0)|| 
	      (fhCorr->GetBinContent(bx,by-1)==0))
	    tmp->SetBinContent(bx,by,1);	
	}
      }    
    for (Int_t bx=0; bx<=nBinsX; bx++) {
      for (Int_t by=0; by<=nBinsY; by++) {
	if (tmp->GetBinContent(bx,by)==1) {
	  fhCorr->SetBinContent(bx,by,0);
	  fhCorr->SetBinError(bx,by,0);
	}
      }
    }
    nBinsXCount++;
    nBinsYCount++;
    if ((nBinsXCount>=nBinsXedge)&&(nBinsYCount>=nBinsYedge)) done=kTRUE;
  }
  tmp->Delete();  

}

//____________________________________________________________________
void AliCorrectionMatrix2D::Rebin(Int_t x, Int_t y)
{
	// rebins the histograms, recalculates the correction

        GetGeneratedHistogram()->Rebin2D(x, y);
        GetMeasuredHistogram()->Rebin2D(x, y);
        GetCorrectionHistogram()->Rebin2D(x, y);
        Divide();
}
Commit	Line	Data
bf21645b	1	/* $Id$ */
	2
	3	// ------------------------------------------------------
	4	//
	5	// Class to handle 2d-corrections.
	6	//
	7	// ------------------------------------------------------
	8	//
	9
	10	#include <TH2F.h>
	11
	12	#include <AliLog.h>
	13
	14	#include "AliCorrectionMatrix2D.h"
	15
	16	//____________________________________________________________________
	17	ClassImp(AliCorrectionMatrix2D)
	18
	19	//____________________________________________________________________
	20	AliCorrectionMatrix2D::AliCorrectionMatrix2D() :
	21	AliCorrectionMatrix()
	22	{
	23	// default constructor
	24	}
	25
	26	//____________________________________________________________________
	27	AliCorrectionMatrix2D::AliCorrectionMatrix2D(const AliCorrectionMatrix2D& c)
	28	: AliCorrectionMatrix(c)
	29	{
	30	// copy constructor
	31	((AliCorrectionMatrix2D &)c).Copy(*this);
	32	}
	33
61385583	34	//____________________________________________________________________
	35	AliCorrectionMatrix2D &AliCorrectionMatrix2D::operator=(const AliCorrectionMatrix2D &c)
	36	{
	37	// assigment operator
	38
	39	if (this != &c)
	40	((AliCorrectionMatrix2D &) c).Copy(*this);
	41
	42	return *this;
	43	}
	44
bf21645b	45	//____________________________________________________________________
	46	AliCorrectionMatrix2D::AliCorrectionMatrix2D(const Char_t* name, const Char_t* title,
	47	Int_t nBinX, Float_t Xmin, Float_t Xmax,
	48	Int_t nBinY, Float_t Ymin, Float_t Ymax)
	49	: AliCorrectionMatrix(name, title)
	50	{
	51	//
	52	// constructor
	53	//
	54
29771dc8	55	// do not add this hists to the directory
	56	Bool_t oldStatus = TH1::AddDirectoryStatus();
	57	TH1::AddDirectory(kFALSE);
	58
82ac9fc4	59	fhMeas = new TH2F("measured", Form("%s measured", GetTitle()), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);
	60	fhGene = new TH2F("generated", Form("%s generated", GetTitle()), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);
	61	fhCorr = new TH2F("correction", Form("%s correction", GetTitle()), nBinX, Xmin, Xmax, nBinY, Ymin, Ymax);
29771dc8	62
29771dc8	63	TH1::AddDirectory(oldStatus);
bf21645b	64
	65	fhMeas->Sumw2();
	66	fhGene->Sumw2();
	67	fhCorr->Sumw2();
	68	}
	69
	70	//____________________________________________________________________
	71	AliCorrectionMatrix2D::AliCorrectionMatrix2D(const Char_t* name, const Char_t* title,
	72	Int_t nBinX, Float_t X, Int_t nBinY, Float_t Y)
	73	: AliCorrectionMatrix(name, title)
	74	{
	75	//
	76	// constructor
	77	//
	78
29771dc8	79	// do not add this hists to the directory
	80	Bool_t oldStatus = TH1::AddDirectoryStatus();
	81	TH1::AddDirectory(kFALSE);
bf21645b	82
29771dc8	83	fhMeas = new TH2F("measured", Form("%s measured",title), nBinX, X, nBinY, Y);
	84	fhGene = new TH2F("generated", Form("%s generated",title), nBinX, X, nBinY, Y);
	85	fhCorr = new TH2F("correction", Form("%s correction",title), nBinX, X, nBinY, Y);
	86
	87	TH1::AddDirectory(oldStatus);
	88
	89	fhMeas->Sumw2();
bf21645b	90	fhGene->Sumw2();
	91	fhCorr->Sumw2();
	92	}
	93
	94	//____________________________________________________________________
	95	AliCorrectionMatrix2D::~AliCorrectionMatrix2D()
	96	{
	97	//
	98	// destructor
	99	//
	100
	101	// histograms already deleted in base class
	102	}
	103
5a6310fe	104	TH2* AliCorrectionMatrix2D::GetGeneratedHistogram() const
bf21645b	105	{
bf21645b	106	// return generated histogram casted to correct type
5a6310fe	107	return dynamic_cast<TH2*> (fhGene);
bf21645b	108	}
bf21645b	109
5a6310fe	110	TH2* AliCorrectionMatrix2D::GetMeasuredHistogram() const
bf21645b	111	{
bf21645b	112	// return measured histogram casted to correct type
5a6310fe	113	return dynamic_cast<TH2*> (fhMeas);
bf21645b	114	}
	115
	116	//____________________________________________________________________
5a6310fe	117	TH1* AliCorrectionMatrix2D::Get1DCorrectionHistogram(Char_t* opt, Float_t min, Float_t max)
bf21645b	118	{
	119	//
	120	// integrate the correction over one variable
	121	//
	122
	123	TH1D* meas1D = 0;
	124	TH1D* gene1D = 0;
	125
	126	if (strcmp(opt,"x")==0) {
06e4b91b	127	Int_t binMin = fhMeas->GetYaxis()->FindBin(min);
06e4b91b	128	Int_t binMax = fhGene->GetYaxis()->FindBin(max);
7584d357	129
06e4b91b	130	if (min>=max) {
	131	meas1D = ((TH2F*)fhMeas)->ProjectionX();
	132	gene1D = ((TH2F*)fhGene)->ProjectionX();
7584d357	133	}
7584d357	134	else {
dd367a14	135	Printf("Getting 1D map. Including y-bins %d to %d", binMin, binMax);
7584d357	136
5a6310fe	137	meas1D = ((TH2F*)fhMeas)->ProjectionX(Form("%s_x_pm", GetName()),binMin,binMax);
5a6310fe	138	gene1D = ((TH2F*)fhGene)->ProjectionX(Form("%s_x_pg", GetName()),binMin,binMax);
7584d357	139	}
bf21645b	140	}
5a6310fe	141	else if (strcmp(opt,"y")==0) {
06e4b91b	142	Int_t binMin = fhMeas->GetXaxis()->FindBin(min);
06e4b91b	143	Int_t binMax = fhMeas->GetXaxis()->FindBin(max);
dd367a14	144
06e4b91b	145	if (min>=max) {
	146	meas1D = ((TH2F*)fhMeas)->ProjectionY();
	147	gene1D = ((TH2F*)fhGene)->ProjectionY();
7584d357	148	}
7584d357	149	else {
5a6310fe	150	Printf("Getting 1D map. Including x-bins %d to %d \n", binMin, binMax);
dd367a14	151
5a6310fe	152	meas1D = ((TH2F*)fhMeas)->ProjectionY(Form("%s_y_pm", GetName()), binMin, binMax);
5a6310fe	153	gene1D = ((TH2F*)fhGene)->ProjectionY(Form("%s_y_pg", GetName()), binMin, binMax);
7584d357	154	}
bf21645b	155	}
5a6310fe	156	else {
	157	Printf("ERROR: Invalid option");
	158	return 0;
	159	}
	160
bf21645b	161	gene1D->Sumw2();
	162
	163	gene1D->SetName(Form("corr_1D_%s",fName.Data()));
	164	gene1D->SetTitle(Form("corr_1D_%s",fName.Data()));
	165
	166	gene1D->Divide(gene1D, meas1D, 1, 1, "B");
	167
	168	return (TH1F*)gene1D;
	169	}
	170
	171	//____________________________________________________________________
	172	void AliCorrectionMatrix2D::FillMeas(Float_t ax, Float_t ay)
	173	{
	174	// add value to measured histogram
06e4b91b	175	((TH2F*)fhMeas)->Fill(ax, ay);
bf21645b	176	}
	177
	178	//____________________________________________________________________
	179	void AliCorrectionMatrix2D::FillGene(Float_t ax, Float_t ay)
	180	{
	181	// add value to generated histogram
06e4b91b	182	((TH2F*)fhGene)->Fill(ax, ay);
bf21645b	183	}
	184
	185	//____________________________________________________________________
	186	Float_t AliCorrectionMatrix2D::GetCorrection(Float_t ax, Float_t ay) const
	187	{
	188	// returns a value of the correction map
	189	return fhCorr->GetBinContent(fhCorr->FindBin(ax,ay));
	190	}
	191
	192	//____________________________________________________________________
	193	void AliCorrectionMatrix2D::RemoveEdges(Float_t cut, Int_t nBinsXedge, Int_t nBinsYedge)
	194	{
	195	// remove edges of correction histogram by removing
	196	// - bins with content less than cut
	197	// - bins next to bins with zero bin content
	198
	199	Int_t nBinsX = fhCorr->GetNbinsX();
	200	Int_t nBinsY = fhCorr->GetNbinsY();
	201
	202	// set bin content to zero for bins with content smaller cut
	203	for (Int_t bx=0; bx<=nBinsX; bx++) {
	204	for (Int_t by=0; by<=nBinsY; by++) {
	205	if (fhCorr->GetBinContent(bx,by)>cut) {
	206	fhCorr->SetBinContent(bx,by,0);
	207	fhCorr->SetBinError(bx,by,0);
	208	}
	209	}
	210	}
	211
	212	// set bin content to zero for bins next to bins with zero
	213	TH2F* tmp = (TH2F*)fhCorr->Clone("tmp");
	214	tmp->Reset();
	215
	216	Bool_t done = kFALSE;
	217	Int_t nBinsXCount = 0;
	218	Int_t nBinsYCount = 0;
	219	while (!done) {
	220	if (nBinsXCount<nBinsXedge)
	221	for (Int_t bx=0; bx<=nBinsX; bx++) {
	222	for (Int_t by=0; by<=nBinsY; by++) {
	223	if ((fhCorr->GetBinContent(bx+1,by)==0)\|\|
	224	(fhCorr->GetBinContent(bx-1,by)==0))
	225	tmp->SetBinContent(bx,by,1);
	226
	227	}
	228	}
	229	if (nBinsYCount<nBinsYedge)
	230	for (Int_t bx=0; bx<=nBinsX; bx++) {
	231	for (Int_t by=0; by<=nBinsY; by++) {
	232	if ((fhCorr->GetBinContent(bx,by+1)==0)\|\|
	233	(fhCorr->GetBinContent(bx,by-1)==0))
	234	tmp->SetBinContent(bx,by,1);
	235	}
	236	}
	237	for (Int_t bx=0; bx<=nBinsX; bx++) {
	238	for (Int_t by=0; by<=nBinsY; by++) {
	239	if (tmp->GetBinContent(bx,by)==1) {
	240	fhCorr->SetBinContent(bx,by,0);
	241	fhCorr->SetBinError(bx,by,0);
	242	}
	243	}
	244	}
	245	nBinsXCount++;
	246	nBinsYCount++;
247	if ((nBinsXCount>=nBinsXedge)&&(nBinsYCount>=nBinsYedge)) done=kTRUE;
248	}
249	tmp->Delete();
250
251	}
252
745d6088	253	//____________________________________________________________________
	254	void AliCorrectionMatrix2D::Rebin(Int_t x, Int_t y)
	255	{
	256	// rebins the histograms, recalculates the correction
	257
	258	GetGeneratedHistogram()->Rebin2D(x, y);
	259	GetMeasuredHistogram()->Rebin2D(x, y);
	260	GetCorrectionHistogram()->Rebin2D(x, y);
	261	Divide();
	262	}