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crosscorrelation.cc
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crosscorrelation.cc
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#include <iostream>
#include <fstream>
#include <iomanip>
#include "crosscorrelation.h"
#include "TCanvas.h"
#include "TMath.h"
#include "simuevents.h"
#include "common.h"
static TProgressBar gProgB;
static char gObjName[1024];
static int gObjNumber = 0 ;
static char * GetObjName() {sprintf(gObjName,"CrossCorrelation%d",gObjNumber++); return gObjName;}
TCrossCorrelation::TCrossCorrelation(const vector<TEvent>& events, const vector<double>& lSources, const vector<double>& bSources, const vector<double>& wSources, double alphaStep, double alphaMax)
: fEvents(events), fLsources(lSources), fBsources(bSources), fWsources(wSources), fAlphaStep(alphaStep), fAlphaMax(alphaMax)
{
fNevents = fEvents.size();
fNsources = fLsources.size();
fExtension = ".pdf";
InitGraph();
InitAnglesSources();
}
TCrossCorrelation::~TCrossCorrelation()
{
if( fEventsCrossCorrelation ) delete fEventsCrossCorrelation;
if( fCoverageCrossCorrelation ) delete fCoverageCrossCorrelation;
if( fThetaEvents ) delete [] fThetaEvents;
if( fPhiEvents ) delete [] fPhiEvents;
if( fCosThetaEvents ) delete [] fCosThetaEvents;
if( fSinThetaEvents ) delete [] fSinThetaEvents;
}
void TCrossCorrelation::InitGraph()
{
fNstep = (int)floor(fAlphaMax/fAlphaStep);
fEventsCrossCorrelation = new TGraph(fNstep);
fCoverageCrossCorrelation = new TGraphAsymmErrors(fNstep);
}
void TCrossCorrelation::InitAnglesEvents(const vector<TEvent>& events)
{
DECLARE_POINTER(double, thetaEvents, events, fB);
DECLARE_POINTER(double, phiEvents, events, fL);
fThetaEvents = new double[fNevents]; fPhiEvents = new double[fNevents];
for(unsigned int i = 0; i < fNevents; i++) {fThetaEvents[i] = 90.-thetaEvents[i]; fPhiEvents[i] = phiEvents[i];}
fCosThetaEvents = new double[fNevents]; fSinThetaEvents = new double[fNevents];
for(unsigned int i = 0; i < fNevents; i++)
{
fCosThetaEvents[i] = cos(fThetaEvents[i]*DTOR);
fSinThetaEvents[i] = sin(fThetaEvents[i]*DTOR);
}
delete [] thetaEvents;
delete [] phiEvents;
}
void TCrossCorrelation::InitAnglesSources()
{
fThetaSources = new double[fNsources]; fPhiSources = new double[fNsources];
for(unsigned int i = 0; i < fNsources; i++) {fThetaSources[i] = 90.-fBsources[i]; fPhiSources[i] = fLsources[i];}
fCosThetaSources = new double[fNsources]; fSinThetaSources = new double[fNsources];
for(unsigned int i = 0; i < fNsources; i++)
{
fCosThetaSources[i] = cos(fThetaSources[i]*DTOR);
fSinThetaSources[i] = sin(fThetaSources[i]*DTOR);
}
}
void TCrossCorrelation::ComputeEventsCrossCorrelation()
{
InitAnglesEvents(fEvents);
double dt;
TH1F * histoEvents = new TH1F(GetObjName(), "", fNstep, 0, fAlphaMax);
for(unsigned int i = 0; i < fNevents; i++)
{
for(unsigned int j = 0; j < fNsources; j++)
{
dt = acos(fSinThetaEvents[i]*fSinThetaSources[j]*cos((fPhiEvents[i]-fPhiSources[j])*DTOR)+fCosThetaEvents[i]*fCosThetaSources[j]);
if(dt/DTOR <= fAlphaMax) histoEvents->Fill(dt/DTOR,fWsources[j]);
}
}
for(unsigned int i = 0; i < fNstep; i++)
fEventsCrossCorrelation->SetPoint(i,histoEvents->GetBinCenter(i+1),histoEvents->Integral(1,i+1));
delete histoEvents;
}
void TCrossCorrelation::ComputeCoverageCrossCorrelation(double longitude, double latitude, const THealpixMap& map, unsigned int nSimu, double dispersion, const vector<double>& thVal, const vector<double>& pthVal, string utcFile, string jdFile, string globalFile)
{
vector<vector<double> > Np(fNstep);
vector<double> BinCenter(fNstep);
gProgB.Zero();
gProgB.fBegin = 0;
gProgB.fEnd = nSimu;
gProgB.InitPercent();
for(unsigned int i = 0; i < nSimu; i++)
{
vector<TEvent> simEvents = SimulateEvents(map, fNevents, thVal, pthVal, latitude, longitude, utcFile, jdFile, globalFile);
InitAnglesEvents(simEvents);
TH1F * histoCoverage = new TH1F(GetObjName(), "", fNstep, 0, fAlphaMax);
double dt;
for(unsigned int j = 0; j < fNevents; j++)
{
for(unsigned int k = 0; k < fNsources; k++)
{
dt = acos(fSinThetaEvents[j]*fSinThetaSources[k]*cos((fPhiEvents[j]-fPhiSources[k])*DTOR)+fCosThetaEvents[j]*fCosThetaSources[k]);
if(dt/DTOR <= fAlphaMax) histoCoverage->Fill(dt/DTOR,fWsources[k]);
}
}
for(unsigned int j = 0; j < fNstep; j++)
{
if(i == 0) {Np[j].resize(nSimu); BinCenter[j] = histoCoverage->GetBinCenter(j+1);}
if(j == 0) Np[j][i] = histoCoverage->GetBinContent(j+1);
else Np[j][i] = Np[j-1][i]+histoCoverage->GetBinContent(j+1);
}
delete histoCoverage;
gProgB.PrintPercent(i);
}
gProgB.EndPercent();
vector<double> NpTmp(nSimu);
double mean, dispersionHigh, dispersionLow;
for(unsigned int i = 0; i < fNstep; i++)
{
mean = 0., dispersionHigh = 0., dispersionLow = 0.;
for(unsigned int j = 0; j < nSimu; j++) {mean += Np[i][j]; NpTmp[j] = Np[i][j];}
mean /= nSimu;
sort(NpTmp.begin(),NpTmp.end());
unsigned int indexMean = 0;
for(unsigned int j = 0; j < nSimu; j++) if(NpTmp[j] >= mean) {indexMean = j; break;}
dispersionHigh = NpTmp[indexMean+(unsigned int)ceil((nSimu-indexMean)*dispersion)];
dispersionLow = NpTmp[indexMean-(unsigned int)ceil(indexMean*dispersion)];
fCoverageCrossCorrelation->SetPoint(i,BinCenter[i],mean);
fCoverageCrossCorrelation->SetPointError(i,0.,0.,fabs(mean-dispersionLow),fabs(mean-dispersionHigh));
}
}
void TCrossCorrelation::DrawEvents() const
{
string Xaxis = "#alpha"; string Yaxis = "n_{p}"; string save = "";
TCanvas * cEvents = new TCanvas(GetObjName(), "Events", 800, 800);
double minX = 0., maxX, minY = 0, maxY;
fEventsCrossCorrelation->GetPoint(fNstep-1,maxX,maxY);
TH1F * hEvents = cEvents->DrawFrame(minX,minY,maxX+fAlphaStep,maxY+10);
DrawHisto(cEvents, hEvents, Xaxis.c_str(), Yaxis.c_str(), save.c_str());
fEventsCrossCorrelation->SetMarkerStyle(kFullCircle); fEventsCrossCorrelation->SetMarkerSize(1);
fEventsCrossCorrelation->Draw("P");
string saveEvents = "crossCorrelationEvents"+fExtension;
cEvents->SaveAs(saveEvents.c_str());
}
void TCrossCorrelation::DrawCov() const
{
string Xaxis = "#alpha"; string Yaxis = "n_{p}"; string save = "";
TCanvas* cCoverage = new TCanvas(GetObjName(), "Coverage", 800, 800);
double minX = 0., maxX, minY = 0, maxY;
fCoverageCrossCorrelation->GetPoint(fNstep-1,maxX,maxY);
TH1F * hCoverage = cCoverage->DrawFrame(minX,minY,maxX+fAlphaStep,maxY+fCoverageCrossCorrelation->GetErrorYhigh(fNstep-1)+10);
DrawHisto(cCoverage, hCoverage, Xaxis.c_str(), Yaxis.c_str(), save.c_str());
fCoverageCrossCorrelation->SetMarkerStyle(kMultiply);
fCoverageCrossCorrelation->Draw("P");
string saveCov = "crossCorrelationCov"+fExtension;
cCoverage->SaveAs(saveCov.c_str());
}
void TCrossCorrelation::DrawBoth() const
{
string Xaxis = "#alpha"; string Yaxis = "n_{p}"; string save = "";
TCanvas* cBoth = new TCanvas(GetObjName(),"Both", 800, 800);
double minX = 0., maxX, minY = 0, maxY;
fCoverageCrossCorrelation->GetPoint(fNstep-1,maxX,maxY);
TH1F* hBoth = cBoth->DrawFrame(minX,minY,maxX+fAlphaStep,maxY+fCoverageCrossCorrelation->GetErrorYhigh(fNstep-1)+10);
DrawHisto(cBoth, hBoth, Xaxis.c_str(), Yaxis.c_str(), save.c_str());
fCoverageCrossCorrelation->SetMarkerStyle(kMultiply); fCoverageCrossCorrelation->Draw("P");
fEventsCrossCorrelation->SetMarkerStyle(kFullCircle); fEventsCrossCorrelation->SetMarkerSize(1); fEventsCrossCorrelation->SetMarkerColor(kRed);
fEventsCrossCorrelation->Draw("same P");
string saveBoth = "crossCorrelationBoth"+fExtension;
cBoth->SaveAs(saveBoth.c_str());
}
void TCrossCorrelation::DrawBothRelativeExcess() const
{
double alpha, NpEvents, NpCoverage, errLow, errHigh;
TGraph * eventsRelativeExcess = new TGraph(fNstep);
TGraphAsymmErrors * coverageRelativeExcess = new TGraphAsymmErrors(fNstep);
for(unsigned int i = 0; i < fNstep; i++)
{
fEventsCrossCorrelation->GetPoint(i,alpha,NpEvents);
fCoverageCrossCorrelation->GetPoint(i,alpha,NpCoverage);
errLow = fCoverageCrossCorrelation->GetErrorYlow(i);
errHigh = fCoverageCrossCorrelation->GetErrorYhigh(i);
eventsRelativeExcess->SetPoint(i,alpha,(NpEvents-NpCoverage)/NpCoverage);
coverageRelativeExcess->SetPoint(i,alpha,0.);
coverageRelativeExcess->SetPointError(i,0.,0.,errLow/NpCoverage,errHigh/NpCoverage);
}
TCanvas * cBothRelativeExcess = new TCanvas(GetObjName(),"BothRelativeExcess", 800, 800);
TH1F* hBoth = cBothRelativeExcess->DrawFrame(0.,-2,fAlphaMax+fAlphaStep,2);
string Xaxis = "#alpha"; string Yaxis = "Relative Excess of pairs"; string save = "";
DrawHisto(cBothRelativeExcess, hBoth, Xaxis.c_str(), Yaxis.c_str(), save.c_str());
eventsRelativeExcess->SetMarkerColor(kRed); eventsRelativeExcess->SetMarkerStyle(kFullCircle); eventsRelativeExcess->SetMarkerSize(1);
coverageRelativeExcess->SetFillColor(18);
coverageRelativeExcess->Draw("3"); eventsRelativeExcess->Draw("same P");
string saveBoth = "crossCorrelationBothRelativeExcess"+fExtension;
cBothRelativeExcess->SaveAs(saveBoth.c_str());
}
void TCrossCorrelation::GetEventsCrossCorrelation(vector<double>& alpha, vector<double>& Np) const
{
Np.resize(fNstep); alpha.resize(fNstep);
for(unsigned int i = 0; i < fNstep;i++) fEventsCrossCorrelation->GetPoint(i,alpha[i],Np[i]);
}
void TCrossCorrelation::GetCoverageCrossCorrelation(vector<double>& alpha,vector<double>& Np,vector<double>& errLow,vector<double>& errHigh) const
{
Np.resize(fNstep); alpha.resize(fNstep); errLow.resize(fNstep); errHigh.resize(fNstep);
for(unsigned int i = 0; i < fNstep; i++)
{
fCoverageCrossCorrelation->GetPoint(i,alpha[i],Np[i]);
errLow[i] = fCoverageCrossCorrelation->GetErrorYlow(i);
errHigh[i] = fCoverageCrossCorrelation->GetErrorYhigh(i);
}
}