trkfit.cc 41.4 KB
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/*  PAON4 analysis software 
    classes and functions to read in and perform array geometry determination 
    using satellites and celestial sources tracks  
    R. Ansari, Fevrier 2019                                             */


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#include <iomanip>

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#include "pexceptions.h"
#include "trkfit.h"
#include "datacards.h"
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#include "array.h"

#include "acbeam.h"
#include "gacfit.h"
#include "gcxfit.h"
#include "gcxfitbaseline.h"

#include "p4autils.h"


//------------------- Print Level for this file --------------------------
static int _prtlevel_ =0;
void TrkFit_SetPrintLevel(int lev) 
{ 
  _prtlevel_=lev; 
  return;
}
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//------------------- TrkInputDataSet -------------------------------------

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TrkInputDataSet::TrkInputDataSet(string dcfilename, string inp_path)
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  : zenang(0.) , theta_0(0.) , phi_0(0.)
{
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  setInputBasePath(inp_path);
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  ReadDatacardFile(dcfilename);
}


static vector<string> * dataflnm_p_ = NULL;
static vector<double> * tstart_p_ = NULL;
static vector<double> * tend_p_ = NULL;
static vector<double> * v_freqs_p_ = NULL;
static vector<string> * trkflnm_p_ = NULL;
static size_t trk_cnt = 0;

static int decode_trkcard(string const& key, string const& toks)
{
  if (key != "trk") {  // CA NE DEVRAIT PAS ARRIVER 
    cout << "decode_trkcard/ERROR  BAD key = " << key << " ( <> trk"<<endl;
    return 1;
  }
  if (! dataflnm_p_ ) { // CA NE DEVRAIT PAS ARRIVER
    cout << "decode_trkcard/ERROR  dataflnm_p_ = NULL !"<<endl;
    return 1;
  }
  char flnmdata[256], flnmtrk[256];
  double ts,te,freq;
  sscanf(toks.c_str(),"%s %lg,%lg %lg %s",flnmdata,&ts,&te,&freq,flnmtrk);

  dataflnm_p_->push_back(flnmdata);
  tstart_p_->push_back(ts*60.);
  tend_p_->push_back(te*60.);
  v_freqs_p_->push_back(freq);
  trkflnm_p_->push_back(flnmtrk);
  trk_cnt++;
  return 0;
}


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void TrkInputDataSet::setInputBasePath(string inp_path)
{
  if (inp_path.length()>0)  input_base_path=inp_path;
  return;
}

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size_t TrkInputDataSet::ReadDatacardFile(string dcfilename)
{
  DataCards dc;
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  string match="trk";
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  dc.AddProcF(decode_trkcard, match);

  zenang=0.; theta_0=0.;  phi_0=0.;
  dataflnm.clear();
  tstart.clear();
  tend.clear();
  v_freqs.clear();
  trkflnm.clear();
  dataflnm_p_ = &dataflnm;
  tstart_p_ = &tstart;
  tend_p_ = &tend;
  v_freqs_p_ = &v_freqs;
  trkflnm_p_ = &trkflnm;
  trk_cnt = 0;
  // @trk visiDataTableFile tstart,tend freq TrackFileName
  //  tstart , tend in minutes freq in MHz
  dc.ReadFile(dcfilename);
  if (dc.HasKey("inpath"))   {   // @inpath  InputFilesDirectoryPath    
    input_base_path = dc.SParam("inpath",0,"");
  }
  if (dc.HasKey("zenang"))   {   // @zenang  Zenith Angle in degree   
    zenang = dc.DParam("zenang",0,0.);
    if (zenang<0.) {
      theta_0 = Angle(-zenang, Angle::Degree).ToRadian();  phi_0 = Angle::PioTwoCst()+Angle::OnePiCst();
    }
    else {
      theta_0 = Angle(+zenang, Angle::Degree).ToRadian();  phi_0 = Angle::PioTwoCst();
    }
  }

  dataflnm_p_ = NULL;
  tstart_p_ = NULL;
  tend_p_ = NULL;
  v_freqs_p_ = NULL;
  trkflnm_p_ = NULL;

  if (trk_cnt != trkflnm.size()) {  // ca ne devrait pas arriver
    cout << " TrkInputDataSet::ReadDatacardFile()/BUG  trk_cnt != trkflnm.size()"<<endl;
    throw PError("TrkInputDataSet::ReadDatacardFile() trk_cnt != trkflnm.size()");
  }
  trk_cnt=0;
  dcfilename_ = dcfilename;
  return trkflnm.size();
}

ostream & TrkInputDataSet::Print(ostream & os) const
{
  os << "TrkInputDataSet(dcfilename="<<dcfilename_<<")/Info:  dec-shift(zenithAngle)= "<<zenang<<" NbTrk="<<NbTrk()<<endl;
  os << "...InputBaseDirectoryPath="<<input_base_path<<endl;
  for(size_t i=0; i<NbTrk(); i++)  {
    os <<"["<<i<<"] data= "<< dataflnm[i]<<"  ts,te(min)= "<<tstart[i]/60.<<","<<tend[i]/60.<<" freg(MHz)= "<<v_freqs[i]
       <<" TrkFile="<<trkflnm[i]<<endl;
  }
  return os;
}


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//------------------------ ACxDataSet -------------------------------------

AcxDataSet::AcxDataSet(TrkInputDataSet & tkds)
  : tot_npoints(0),zenang(0.),theta_0(0.),phi_0(0.)
{
  ReadData(tkds);
}

AcxDataSet::AcxDataSet(AcxDataSet const & a)
  : v_time_data(a.v_time_data), vv_data(a.vv_data), vv_err(a.vv_err), 
    v_min_data(a.v_min_data), v_max_data(a.v_max_data),
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    vv_cxdata(a.vv_cxdata), vv_cxerr(a.vv_cxerr),
    v_min_cxdata(a.v_min_cxdata), v_max_cxdata(a.v_max_cxdata), 
    tot_npoints(a.tot_npoints), v_freqs(a.v_freqs), 
    zenang(a.zenang), theta_0(a.theta_0), phi_0(a.phi_0),
    v_acbeams(a.v_acbeams), v_cxbeams(a.v_cxbeams),
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    v_phase(a.v_phase), v_phi_0(a.v_phi_0), v_a_phi(a.v_a_phi), v_Acx(a.v_Acx), v_Bcx(a.v_Bcx)
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{
}

AcxDataSet & AcxDataSet::operator = (AcxDataSet const & a)
{
  v_time_data=a.v_time_data; vv_data=a.vv_data; vv_err=a.vv_err; 
  v_min_data=a.v_min_data;   v_max_data=a.v_max_data;
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  vv_cxdata=a.vv_cxdata;   vv_cxerr=a.vv_cxerr;
  v_min_cxdata=a.v_min_cxdata;  v_max_cxdata=a.v_max_cxdata; 
  tot_npoints=a.tot_npoints; v_freqs=a.v_freqs;
  zenang=a.zenang;  theta_0=a.theta_0;  phi_0=a.phi_0;
  v_acbeams=a.v_acbeams;  v_cxbeams=a.v_cxbeams;
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  v_phase=a.v_phase; v_phi_0=a.v_phi_0;  v_a_phi=a.v_a_phi;  v_Acx=a.v_Acx;  v_Bcx=a.v_Bcx;
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  return (*this);
}

size_t AcxDataSet::ReadData(TrkInputDataSet & tkds)    
{
  cout << "---- AcxDataSet::AcxDataSet() reading 4 PAON4 auto-correlation & 6 Cross-cor signals/DataTables for"
       <<tkds.NbTrk()<<" tracks ..."<<endl;

  if (tkds.NbTrk() != v_time_data.size()) {
    v_time_data.resize(tkds.NbTrk());
    vv_data.resize(tkds.NbTrk());
    vv_err.resize(tkds.NbTrk());
    v_min_data.resize(tkds.NbTrk());
    v_max_data.resize(tkds.NbTrk());
    vv_cxdata.resize(tkds.NbTrk());
    vv_cxerr.resize(tkds.NbTrk());
    v_min_cxdata.resize(tkds.NbTrk());
    v_max_cxdata.resize(tkds.NbTrk());    
  }
  v_freqs=tkds.v_freqs;
  zenang=tkds.zenang;   theta_0=tkds.theta_0;    phi_0=tkds.phi_0;
  size_t NB_ANTENNES=getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=getNbCrossCor();
  tot_npoints = 0;   // total number of points for fit 
  const char * acname[4]={"V11","V22","V33","V44"};
  const char * cxname[6]={"V12","V13","V14","V23","V24","V34"};
  
  for(size_t j=0; j<tkds.dataflnm.size(); j++) {
    string flnm = tkds.input_base_path+tkds.dataflnm[j]+".ppf";
    cout << "1."<<j+1<<" Extracting data from data file DataTable: " << flnm<<endl
	 << " ... For time interval (Trk"<<j+1<<") "<<tkds.tstart[j]<<" < t < "<<tkds.tend[j]<<endl;
    DataTable dt_data;
    PInPersist pin(flnm);
    pin >> dt_data;
    dt_data.SetShowMinMaxFlag(true);
    size_t ktime = dt_data.IndexNom("timesec");
    vector<double> vtm;
    dt_data.GetColumn(ktime, vtm);
    vector< vector<double> > v_vac(NB_ANTENNES);
    for(size_t ii=0; ii<NB_ANTENNES; ii++) {   // 4 auto-correlations
      size_t kac = dt_data.IndexNom(acname[ii]);
      dt_data.GetColumn(kac, v_vac[ii]);
      vector<double> vtmp, vetmp;
      vv_data[j].push_back(vtmp);
      vv_err[j].push_back(vetmp);
      v_min_data[j].push_back(9.e19);
      v_max_data[j].push_back(-9.e19);
    }
    vector< vector <complex<double> > > v_vcx(NB_CXCORS);
    for(size_t ii=0; ii<NB_CXCORS; ii++) {   // 6 cross-correlations
      size_t kac = dt_data.IndexNom(cxname[ii]);
      dt_data.GetColumn(kac, v_vcx[ii]);
      vector< complex<double> > vtmp;
      vector<double> vetmp;
      vv_cxdata[j].push_back(vtmp);
      vv_cxerr[j].push_back(vetmp);
      v_min_cxdata[j].push_back(9.e19);
      v_max_cxdata[j].push_back(-9.e19);
    }
    
    vector< vector<double> > & v_data = vv_data[j];
    vector< vector<double> > & v_err = vv_err[j];
    vector< vector< complex<double> > > & v_cxdata = vv_cxdata[j];
    vector< vector<double> > & v_cxerr = vv_cxerr[j];

    for(size_t k=0; k<vtm.size(); k++) {
      if ((vtm[k]<tkds.tstart[j])||(vtm[k]>tkds.tend[j]))  continue;
      v_time_data[j].push_back(vtm[k]);
      for(size_t ii=0; ii<NB_ANTENNES; ii++) {
	vector<double> & vac = v_vac[ii];
	v_data[ii].push_back(vac[k]);
	v_err[ii].push_back(0.1*sqrt(fabs(vac[k])));   // calcul d'erreur, a affiner 
	if (vac[k]<v_min_data[j][ii])  v_min_data[j][ii]=vac[k];
	if (vac[k]>v_max_data[j][ii])  v_max_data[j][ii]=vac[k];
      }
      for(size_t ii=0; ii<NB_CXCORS; ii++) {   // 6 cross-correlations
	vector< complex<double> > & vcx = v_vcx[ii];
	v_cxdata[ii].push_back(vcx[k]);
	double acx=std::abs(vcx[k]);
	v_cxerr[ii].push_back(0.1*sqrt(acx));
	if (acx<v_min_cxdata[j][ii])  v_min_cxdata[j][ii]=acx;
	if (acx>v_max_cxdata[j][ii])  v_max_cxdata[j][ii]=acx;
      }
    }
    
    tot_npoints += v_time_data[j].size();   // total number of points for fit 
    cout << " ... Done for " << j+1 << " data size="<<v_time_data[j].size()<<endl;
    cout << "  Data-AutoCor Min,Max[A1...A4]="; 
    for(size_t ii=0; ii<NB_ANTENNES; ii++)
      cout<<setw(10)<<v_min_data[j][ii]<<","<<setw(10)<<v_max_data[j][ii]<<" ; ";   cout << endl;
    cout << "  Data-CxCorr (abs) Min,Max[Cx1...Cx6]="; 
    for(size_t ii=0; ii<NB_ANTENNES; ii++)
      cout<<setw(10)<<v_min_cxdata[j][ii]<<","<<setw(10)<<v_max_cxdata[j][ii]<<" ; ";   cout << endl;

  }
  return tot_npoints;
}


//------------------------ TrackSet -------------------------------------
TrackSet::TrackSet(TrackSet const & a)
  : v_time_sat(a.v_time_sat), v_sat_elev(a.v_sat_elev), v_sat_azim(a.v_sat_azim),
    v_interp_elev(a.v_interp_elev), v_interp_sazim(a.v_interp_sazim)							   
{
}

TrackSet & TrackSet::operator = (TrackSet const & a)
{
  v_time_sat=a.v_time_sat;  v_sat_elev=a.v_sat_elev;  v_sat_azim=a.v_sat_azim;
  v_interp_elev=a.v_interp_elev;  v_interp_sazim=a.v_interp_sazim; 
  return *this;
}

TrackSet::TrackSet(TrkInputDataSet & tkds)
{
  ReadData(tkds);
}

size_t TrackSet::ReadData(TrkInputDataSet & tkds)
{
  cout << "---- TrackSet::ReadData() ; reading source (satellites, ..) for "
       <<tkds.NbTrk()<<" tracks ..."<<endl;
  if (tkds.NbTrk() != v_time_sat.size()) {
    v_time_sat.resize(tkds.NbTrk());
    v_sat_elev.resize(tkds.NbTrk());
    v_sat_azim.resize(tkds.NbTrk());
    v_interp_elev.resize(tkds.NbTrk());
    v_interp_sazim.resize(tkds.NbTrk());
  }

  for(size_t j=0; j<tkds.NbTrk(); j++) {
    string flnm = tkds.input_base_path+tkds.trkflnm[j]+".ppf";
    cout << "2."<<j+1<<" Extracting data from  satellite track DataTables: " << tkds.trkflnm[j] << endl;
    DataTable dt_sat;
    PInPersist pin(flnm);
    pin >> dt_sat;
    dt_sat.SetShowMinMaxFlag(true);
    size_t ktime = dt_sat.IndexNom("timesec");
    dt_sat.GetColumn(ktime, v_time_sat[j]);
    size_t kelev = dt_sat.IndexNom("elevation");
    dt_sat.GetColumn(kelev, v_sat_elev[j]);
    size_t kazim = dt_sat.IndexNom("azimuth");
    dt_sat.GetColumn(kazim, v_sat_azim[j]);
    cout << "2."<<j+1<<"  Done for satellite from file "<<tkds.trkflnm[j]<<"  -> size()="<<v_time_sat[j].size()<<endl;
    v_interp_elev[j].DefinePoints(v_time_sat[j], v_sat_elev[j]);
    double last_azim=v_sat_azim[j][0];
    //    vector<double> cazim(v_sat_azim[j].size());
    // azimuth values, shifted possibly +360 +720 deg ... to avoid jumping from 360 deg to 0 deg  
    vector<double> shifted_azim(v_sat_azim[j].size());   
    double azim_offset=0.;
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    double min_azim_offset=0.;
    bool fgneg_azim_offset=false;
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    for(size_t k=0; k<v_sat_azim[j].size(); k++)  {
      double azim=v_sat_azim[j][k];
      if ((k>0)&&(azim<last_azim)) {
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	if ((last_azim>300.)&&(azim<60.))  {
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	  azim_offset += 360.;
	  if (_prtlevel_>0) 
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	    cout << " read_srctracks 360 to 0 deg. Jump k="<<k<<" last_azim="<<last_azim<<" azimuth= "<<azim<<" Offset->"<<azim_offset<<endl;
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	}
      }
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      else if ((k>0)&&(azim>last_azim)) {
	if ((last_azim<60)&&(azim>300.))  {
	  azim_offset -= 360.;
	  if (_prtlevel_>0) 
	    cout << " read_srctracks 0 to 360 deg. Jump: k="<<k<<" last_azim="<<last_azim<<" azimuth= "<<azim<<" Offset->"<<azim_offset<<endl;
	}
      }
      if (azim_offset<min_azim_offset)  min_azim_offset=azim_offset;
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      last_azim = azim;
      shifted_azim[k]=azim+azim_offset;
      /*
      double phisrcdeg=90.-v_sat_azim[j][k];
      if (phisrcdeg<0.)  phisrcdeg+=360.;
      double phisrc=Angle(phisrcdeg,Angle::Degree).ToRadian();
      cazim[k]=cos(phisrc);
      */
    }
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    if (min_azim_offset < -300.) {
      cout << " read_srctracks() - correcting for negative azim_offset -> Adding " << -min_azim_offset <<" deg."<<endl;
      for(size_t k=0; k<shifted_azim.size(); k++)   shifted_azim[k] -= min_azim_offset;
    }
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    v_interp_sazim[j].DefinePoints(v_time_sat[j], shifted_azim);
    //    v_interp_cphi[j].DefinePoints(v_time_sat[j], cazim);
    cout<<"  DONE Creation SLinInterp1D for elevation / azimuth ..."<<endl;
    cout << v_interp_elev[j];
    cout << v_interp_sazim[j];
  }
  return 0;
}


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//------------------------ ACxSetFitter -------------------------------------
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ACxSetFitter::ACxSetFitter(AcxDataSet & data, TrackSet & tks)
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  : fggaussbeam_(true), D_dish(5.), acxd_(data), tks_(tks), fit_ac_done(false), fit_cx_done(false), 
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    v_RcFit_ac(tks.getNbAutoCor()), v_xi2red_ac(tks.getNbAutoCor()),
    v_Ddish(tks.getNbAutoCor()), v_thetaant(tks.getNbAutoCor()), 
    v_phiant(tks.getNbAutoCor()), v_A(tks.getNbAutoCor()), v_B(tks.getNbAutoCor()), 
    v_err_Ddish(tks.getNbAutoCor()), v_err_thetaant(tks.getNbAutoCor()), 
    v_err_phiant(tks.getNbAutoCor()), v_err_A(tks.getNbAutoCor()), v_err_B(tks.getNbAutoCor()), 
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    v_acbeams(tks.getNbAutoCor()),
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    v_RcFit_cx(tks.getNbCrossCor()), v_xi2red_cx(tks.getNbCrossCor()),
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    v_phase(tks.getNbCrossCor()), v_phi_0(tks.getNbCrossCor()), v_a_phi(tks.getNbCrossCor()), 
    v_Acx(tks.getNbCrossCor()), v_Bcx(tks.getNbCrossCor()), 
    v_err_phi_0(tks.getNbCrossCor()), v_err_a_phi(tks.getNbCrossCor()), 
    v_err_Acx(tks.getNbCrossCor()), v_err_Bcx(tks.getNbCrossCor()),
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    v_cxbeams(tks.getNbCrossCor())
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{
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  if (data.NbTrk() != tks.NbTrk())
    throw ParmError("ACxSetFitter(data, tks) NOT same number of tracks NbTrk() in data and tks");
  if (data.NbTrk() < 1)
    throw ParmError("ACxSetFitter(data, tks) 0 tracks in data data.NbTrk()<1 ");
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}

int ACxSetFitter::doACfit(string outfilename)
{
  cout << "======================================================================================"<<endl;
  cout << "---- ACxSetFitter::doACfit() ; Performing antenna pointing fit ..."<<endl;
  ofstream ofr(outfilename.c_str());
  ofr << "#### Pointing/dish diameter fit on autocorrelation (ACxSetFitter::doACfit() "<<endl
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      << "## NumAntenna RcFit Xi2red  Deff err_Deff  Elevation err_Elev  Azimuth err_Ezim  A0 err_A0 B0 err_B0 A1 err_A1 B1 err_B1 ..."<<endl;
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  size_t NB_ANTENNES = acxd_.getNbAutoCor();
  size_t NTRK = acxd_.NbTrk();

  for(size_t ii=0; ii<NB_ANTENNES; ii++)  { 
    v_A[ii].resize(NTRK);     v_B[ii].resize(NTRK); 
    v_err_A[ii].resize(NTRK);     v_err_B[ii].resize(NTRK); 
  }
  int tot_npoints_fit = 0;
  for(size_t j=0; j<NTRK; j++) tot_npoints_fit += acxd_.v_time_data[j].size();
  for(size_t ii=0; ii<NB_ANTENNES; ii++) {
    cout << "-------- doACfit() 1."<<ii+1<<" Creating General Fit for AutoCor Antenna= " << ii+1 << endl;
    GeneralFitData gdata(1, tot_npoints_fit);
    for(size_t j=0; j<NTRK; j++) {
      vector< vector<double> > & v_data = acxd_.vv_data[j];
      vector< vector<double> > & v_err = acxd_.vv_err[j];
      for(size_t k=0; k<acxd_.v_time_data[j].size(); k++) {
	gdata.AddData1(acxd_.v_time_data[j][k],v_data[ii][k],v_err[ii][k]); // Fill x, y and error on y     
      }
    }
    MyACGenXi2 gxi2( acxd_.v_time_data, acxd_.vv_data, acxd_.vv_err, acxd_.v_freqs, 
		     tks_.v_interp_elev, tks_.v_interp_sazim, ii, fggaussbeam_);
    GeneralFit mFit(&gxi2);
    mFit.SetData(&gdata);        // connect data to the fitter , here the data is unused - gxi2 includes its data 
    mFit.SetMaxStep(1000);
    // SetParam(int n,double value, double step,double min=1., double max=-1.);
    mFit.SetParam(0,"D_dish",D_dish,0.1,D_dish*0.8,D_dish*1.2);
    // mFit.SetFix(0, D_dish);
    
    double thetaAntenne=0., phiAntenne=0.;
    if (fabs(acxd_.zenang)>1.e-6) {
      if (acxd_.zenang<0)  {
	thetaAntenne=Angle(-acxd_.zenang,Angle::Degree).ToRadian();
	phiAntenne=Angle(270.,Angle::Degree).ToRadian();
      }
      else {
	thetaAntenne=Angle(acxd_.zenang,Angle::Degree).ToRadian();
	phiAntenne=Angle(90.,Angle::Degree).ToRadian();
      }
    }
    mFit.SetParam(1,"ThetaAntenne",thetaAntenne,M_PI/1440,0.,thetaAntenne+M_PI/36.);
    mFit.SetParam(2,"PhiAntenne",phiAntenne,M_PI/180.,0.,2.*M_PI);
    // mFit.SetFix(1, thetaAntenne);
    // mFit.SetFix(2, phiAntenne);
    
    for(size_t j=0; j<NTRK; j++) {
      char pname[32];
      sprintf(pname,"A%d",(int)(j+1));
      double A = acxd_.v_max_data[j][ii];
      mFit.SetParam(2*j+3,pname,A,A/10.,A/20,A*5);
      sprintf(pname,"B%d",(int)(j+1));
      double B = acxd_.v_min_data[j][ii];
      mFit.SetParam(2*j+4,pname,B,B/10.,B/20,B*5);
      mFit.SetFix(2*j+4, B);
      
    }
    //DBG mFit.PrintFit();
    //    cout << "do_p4_trkfit 2."<<ii+1<<" Performing the fit for AutoCor Antenna= " << ii+1 << endl;
    int rcfit = mFit.Fit();
    if (_prtlevel_>1) mFit.PrintFit();
    v_RcFit_ac[ii]=rcfit;  v_xi2red_ac[ii]=-9999.;
    if(rcfit>0) { 
      cout<< "------- Fit result for Antenna No="<<ii+1<<" Reduce_Chisquare = " << mFit.GetChi2Red()
	  << " nstep="<<mFit.GetNStep() << " rc="<<rcfit<<endl;
    }
    else {
      cout << "---Fit failed for "<<ii+1<<"--- Fit_Error, rc = " << rcfit << "  nstep="<<mFit.GetNStep()<<endl;
      ofr <<setw(4)<<ii+1<<" ERROR FIT RC="<<rcfit<<"  nstep="<<mFit.GetNStep()<<endl;
      if (_prtlevel_>0) mFit.PrintFitErr(rcfit);
    } 
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    ofr <<setw(4)<<ii+1<<" "<<setw(8)<<mFit.GetChi2Red()<<" "; 
    v_xi2red_ac[ii]=mFit.GetChi2Red();
    double Dfit=mFit.GetParm(0);   double err_Dfit=mFit.GetParmErr(0);
    cout <<setw(16)<<"DishDiameter= "<<setw(10)<<Dfit<<" +/- "<<setw(10)<<err_Dfit<<" m."<<endl;
    ofr <<setw(5)<<rcfit<<" "<<setw(8)<<Dfit<<" "<<setw(8)<<err_Dfit<<"  "; 
    v_Ddish[ii]=Dfit;
    v_err_Ddish[ii]=err_Dfit;
    double thetaant=mFit.GetParm(1);   double err_thetaant=mFit.GetParmErr(1);
    v_thetaant[ii]=thetaant;
    double elevdeg=90.-Angle(thetaant).ToDegree();
    double err_elevdeg=Angle(err_thetaant).ToDegree();
    cout <<setw(16)<<"ThetaAntenne= "<<setw(12)<<Angle(thetaant).ToDegree()<< " +/- "
	 <<setw(12)<<Angle(err_thetaant).ToDegree()<<" (elevation="
	 <<setw(8)<<elevdeg<<" +/- "<<setw(8)<<err_elevdeg<<") deg."<<endl;
    ofr <<setw(8)<<elevdeg<<" "<<setw(8)<<err_elevdeg<<"  "; 
    double phiant=mFit.GetParm(2);   double err_phiant=mFit.GetParmErr(2);
    double azimdeg=90.-Angle(phiant).ToDegree();
    if (azimdeg<0.)  azimdeg += 360.;
    double err_azimdeg=Angle(err_phiant).ToDegree();
    v_phiant[ii]=phiant;
    cout <<setw(16)<<"PhiAntenne= "<<setw(12)<<Angle(phiant).ToDegree()<< " +/- "
	 <<setw(12)<<Angle(err_phiant).ToDegree()<<" (azimuth  ="
	 <<setw(8)<<azimdeg<<" +/- "<<setw(8)<<err_azimdeg<<" ) deg."<<endl;
    ofr <<setw(8)<<azimdeg<<" "<<setw(8)<<err_azimdeg<<"  "; 
    for(size_t j=0; j<NTRK; j++) {
      double A=mFit.GetParm(3+2*j);   double err_A=mFit.GetParmErr(3+2*j);
      double B=mFit.GetParm(4+2*j);   double err_B=mFit.GetParmErr(4+2*j);
      cout << "  Trk/Sat["<<j<<"] -> A= "<<A<<" +/- "<<err_A<<"  B= "<<B<<" +/- "<<err_B<<endl;
      v_A[ii][j]=A;  v_B[ii][j]=B;
      v_err_A[ii][j]=err_A;  v_err_B[ii][j]=err_B;
      ofr <<setw(8)<<A<<" "<<setw(8)<<err_A<<" "<<setw(8)<<B<<" "<<setw(8)<<err_B<<" ";
    }
    ofr << endl;
    double clight = PhysQty::c().SIValue();
    double lambda = clight/(acxd_.v_freqs[0]*1.e6);
    ACBeam acb1(Dfit, thetaant, phiant, lambda);
    acb1.setGaussianLobe(fggaussbeam_);
    ACBeam acb2(Dfit, thetaant, phiant, lambda);
    acb2.setGaussianLobe(fggaussbeam_);
    Vector3d baseline0(0.,0.,0.);
    v_acbeams[ii]=CxBeam(acb1, acb2, baseline0);
    
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  }
  
506 507
  fit_ac_done=true;
  acxd_.v_acbeams=v_acbeams;
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  return 0;
}

int ACxSetFitter::saveExpectedAC(string outcheckfilename)
{
  if (outcheckfilename.length()<1)  return 1;
  cout << "-----ACxSetFitter::saveExpectedAC() : computing expected signal for fitted params , will be saved to file "
       <<outcheckfilename<<endl;
  POutPersist pos(outcheckfilename);
  size_t NB_ANTENNES = acxd_.getNbAutoCor();
  size_t NTRK = acxd_.NbTrk();

  for(size_t ii=0; ii<NB_ANTENNES; ii++)     {
    if (_prtlevel_>1) 
      cout << "... Computing DataSignal & Expected Signal for fitted params and dish "<<ii+1<<endl;
    
    MyACSignal macs(acxd_.v_time_data, acxd_.vv_data, acxd_.vv_err, acxd_.v_freqs, 
		    tks_.v_interp_elev, tks_.v_interp_sazim, ii, fggaussbeam_);
      
    double Ddishfit=v_Ddish[ii];
    double thetafit=v_thetaant[ii];
    double phifit=v_phiant[ii];
    
    char oname[32];
    for(size_t j=0; j<NTRK; j++)  {
      double A = v_A[ii][j];
      double B = v_B[ii][j];
      Vector signal = macs.getDataSignal(j);
      sprintf(oname,"ac_%d_%d",(int)ii+1,(int)j+1);
      pos << PPFNameTag(oname)<<signal;
      Vector expsignal = macs.getExpectedSignal(j, Ddishfit, thetafit, phifit, A, B);
      sprintf(oname,"simac_%d_%d",(int)ii+1,(int)j+1);      
      pos << PPFNameTag(oname)<<expsignal;
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      if (ii==0)  {
	Vector tmvec = macs.getTimeVec(j);
	sprintf(oname,"tim_%d",(int)j+1);
	pos << PPFNameTag(oname)<<tmvec;
      }
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    }
  } 
  return 0;
}


552
int ACxSetFitter::doCxfit(string outfilenamecx, bool useAac, bool fgphi0only)
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{
  size_t NB_ANTENNES=acxd_.getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=acxd_.getNbCrossCor();
  size_t NTRK = acxd_.NbTrk();

  cout << "======================================================================================"<<endl;
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  cout << "---------- ACxSetFitter::doCxfit() ; Performing cross-cor phase fit for NTrk="<<NTRK<<endl;
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  if (useAac) cout << " ... Using Amplitude from auto-correlations fit for initial fit parameter value..."<<endl; 
  ofstream ofr(outfilenamecx.c_str());
  ofr << "#### cross-cor phase fit (ACxSetFitter::doCxfit() ) "<<endl
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      << "## NumCxCor RcFit Xi2red Phi0 err_Phi0 a_Phi err_a_Phi (deg) A0 err_A0 A1 err_A1  ..."<<endl;
564 565
  int tot_npoints_fit = 0;
  for(size_t j=0; j<NTRK; j++) tot_npoints_fit += 2*(acxd_.v_time_data[j].size());
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  cout << " Total number of data points for fit="<< tot_npoints_fit<<endl;

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  size_t Anum1[6]={0,0,0,1,1,2};
  size_t Anum2[6]={1,2,3,2,3,3};
  for(size_t ii=0; ii<NB_CXCORS; ii++) {
    v_Acx[ii].resize(NTRK);   
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    v_Bcx[ii].resize(NTRK);  
    v_err_Acx[ii].resize(NTRK);   
    v_err_Bcx[ii].resize(NTRK);  
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    for(size_t j=0; j<NTRK; j++) {
      v_Acx[ii][j]=1.;   v_Bcx[ii][j]=complex<double>(0.,0.);
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      v_err_Acx[ii][j]=1.;   v_err_Bcx[ii][j]=complex<double>(0.,0.);
578
    }
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    Vector3d baseline=P4Coords::getBaseline(Anum1[ii]+1,Anum2[ii]+1);
    cout << "--------- 1."<<ii+1<<" doCxfit() Doing fit for CrossCor= " << ii << " FxF= " 
	 << Anum1[ii]+1<<"x"<<Anum2[ii]+1<<" Baseline="<<baseline<<endl;
    GeneralFitData gdata(1, tot_npoints_fit);
    for(size_t j=0; j<NTRK; j++) {
      vector< vector< complex<double> > > & v_cxdata = acxd_.vv_cxdata[j];
      vector< vector<double> > & v_cxerr = acxd_.vv_cxerr[j];
      for(size_t k=0; k<acxd_.v_time_data[j].size(); k++) {
	gdata.AddData1(acxd_.v_time_data[j][k],v_cxdata[ii][k].real(),v_cxerr[ii][k]); // Fill x, y and error on y
	gdata.AddData1(acxd_.v_time_data[j][k],v_cxdata[ii][k].imag(),v_cxerr[ii][k]); // Fill x, y and error on y     
      }
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    }
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    double clight = PhysQty::c().SIValue();
    double lambda = clight/(acxd_.v_freqs[0]*1.e6);
    ACBeam acb1(v_Ddish[Anum1[ii]], v_thetaant[Anum1[ii]], v_phiant[Anum1[ii]], lambda);
    acb1.setGaussianLobe(fggaussbeam_);
    ACBeam acb2(v_Ddish[Anum2[ii]], v_thetaant[Anum2[ii]], v_phiant[Anum2[ii]], lambda);
    acb2.setGaussianLobe(fggaussbeam_);
    CxBeam cxbeam(acb1, acb2, baseline);
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    v_cxbeams[ii]=cxbeam;
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600
    MyCxGenXi2 gxi2( acxd_.v_time_data, acxd_.vv_cxdata, acxd_.vv_cxerr, acxd_.v_freqs, 
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		     tks_.v_interp_elev, tks_.v_interp_sazim, cxbeam, ii);
    GeneralFit mFit(&gxi2);
    mFit.SetData(&gdata);        // connect data to the fitter , here the data is unused - gxi2 includes its data 
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    mFit.SetMaxStep(3000);
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    // SetParam(int n,double value, double step,double min=1., double max=-1.);
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    mFit.SetParam(0,"Phi_0",0.,M_PI/360.,0.,2.2*M_PI);
    mFit.SetParam(1,"a_phi",0.,0.05,-15.,15.);
    if (fgphi0only) {
      cout << " ACxSetFitter::doCxfit() Fitting Phi0 Only (frequency independent phase)"<<endl;
      mFit.SetFix(1,0.);
    }
    else cout << " ACxSetFitter::doCxfit() Fitting  Phase(freq) = Phi0 + a_Phi * (freq-1250.)/250. "<<endl;
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    char oname[32];
    vector<double> v_amp(NTRK);
    for(size_t j=0; j<NTRK; j++) {
      double A=1.; // v_max_cxdata[j][ii]; 
      TVector< complex<double> >  signal = gxi2.getDataSignal(j);
      Vector asig = SOPHYA::abs(signal);
      double mins, maxs;
      asig.MinMax(mins, maxs);
      TVector< complex<double> >  expsignal = gxi2.getExpectedSignal(j, 0., A);
      Vector aexpsig = SOPHYA::abs(expsignal);
      double mine, maxe;
      aexpsig.MinMax(mine, maxe);
      A=maxs/maxe;
      v_amp[j]=A; 
    }

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    double fparm[500];  fparm[0]=0.;
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    double bestxi2 = 9.e19;
    double bestphase=0.;
    int bestnpts,npts;
    int bestafact;
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    double afact[12]={0.15,0.3,0.5,0.75,1.0,1.25,1.5,1.75,2.0,2.4,2.8,3.2};
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    for(int ia=0; ia<12; ia++) {
      for(size_t j=0; j<NTRK; j++) {
	double Aac=sqrt(v_A[Anum1[ii]][j] * v_A[Anum2[ii]][j]);
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	fparm[2+3*j]=(useAac?Aac:v_amp[j]);
	fparm[2+3*j]*=afact[ia];   fparm[2+3*j]=fparm[3+3*j]=0.;
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      }
      for(double ph=0.; ph<360.; ph += 1) {
	fparm[0]=Angle(ph, Angle::Degree).ToRadian();
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	fparm[1]=0.;
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	double xi2 = gxi2.getXi2(fparm, npts);
	if (xi2 < bestxi2) {
	  bestxi2 = xi2; bestphase=fparm[0]; bestnpts=npts;  bestafact=afact[ia];
	}
      }
    }
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    mFit.SetParam(0,"Phi_0",bestphase,M_PI/720.,-0.5*M_PI,2.5*M_PI);
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    cout << "2."<<ii+1<<" Scan param bestxi2_red="<<bestxi2/(double)(tot_npoints_fit-(1+NTRK))<<"  bestphase="
	 <<Angle(bestphase).ToDegree()<<" bestnpts="<<bestnpts<<" bestafact="<<bestafact<< " A= ";  
655
    v_phi_0[ii]=bestphase;
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    for(size_t j=0; j<NTRK; j++)  {
      cout << v_amp[j] << " , ";  
658
      double Aac=sqrt(v_A[Anum1[ii]][j] * v_A[Anum2[ii]][j]);
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      v_Acx[ii][j]=(useAac?Aac:v_amp[j]);
    }
    cout << endl;
    for(size_t j=0; j<NTRK; j++) {
      char pname[32];
      sprintf(pname,"A%d",(int)(j+1));
      double Aac=sqrt(v_A[Anum1[ii]][j] * v_A[Anum2[ii]][j]);
      double A=(useAac?Aac:v_amp[j]);
      //DBG      cout << "*DBG* j="<<j<<" Aac= "<<Aac<<" v_amp="<<v_amp[j]<<"  A= "<<A<<"  A1="<<v_A[Anum1[ii]][j]<<" A2="<<v_A[Anum2[ii]][j]<<endl;
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      mFit.SetParam(2+3*j,pname,A,A/10.,A/4,A*4);
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      sprintf(pname,"Bre%d",(int)(j+1));
      mFit.SetParam(3+3*j,pname,0.,A/25.,-A/5,A/5.);
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      sprintf(pname,"Bim%d",(int)(j+1));
      mFit.SetParam(4+3*j,pname,0.,A/25.,-A/5,A/5.);
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      mFit.SetFix(3+3*j,0.);
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      mFit.SetFix(4+3*j,0.);
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    }
    //DBG mFit.PrintFit();
    if (_prtlevel_>1)    
      cout << " 3."<<ii+1<<" Performing the fit for CrossCor " << ii << " FxF= " << Anum1[ii]+1<<"x"<<Anum2[ii]+1<<endl;
    int rcfit = mFit.Fit();
    v_RcFit_cx[ii]=rcfit;   v_xi2red_cx[ii]=-99999.;
    if (_prtlevel_>1) mFit.PrintFit();
    if(rcfit>0) { 
      v_xi2red_cx[ii]=mFit.GetChi2Red();
      //      cout<< "-------------------------- Result for Cross No " << ii << endl; 
685
      cout<< "------ Fit result for Cross No "<<ii+1<<" Reduce_Chisquare = " << mFit.GetChi2Red()
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	  << " nstep="<<mFit.GetNStep() << " rc="<<rcfit<<endl;
    }
    else {
      cout << "---Fit failed for "<<ii<<" Fit_Error, rc = " << rcfit << "  nstep="<<mFit.GetNStep()<<endl;
      ofr <<setw(4)<<ii+1<<" ERROR FIT RC="<<rcfit<<"  nstep="<<mFit.GetNStep()<<endl;
      if (_prtlevel_>0) mFit.PrintFitErr(rcfit);
    }
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    ofr <<setw(4)<<ii+1<<" "<<setw(5)<<rcfit<<setw(8)<<mFit.GetChi2Red()<<" "; 
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    double phi0=mFit.GetParm(0);   double err_phi0=mFit.GetParmErr(0);
    double aphi=mFit.GetParm(1);   double err_aphi=mFit.GetParmErr(1);
    // on calcule la phase ajustee pour la frequence de reference 1300 MHz 
    double phase=gxi2.getPhase4Freq(phi0,aphi,1300.);
    while (phase<0.) phase += 2.*M_PI;
    while (phase>2.*M_PI) phase -= 2.*M_PI;
    cout <<"Phase(@1300MHz)= "<<setw(10)<<Angle(phase).ToDegree()<<"  phi_0= "<<setw(10)
	 <<Angle(phi0).ToDegree()<<" +/- "<<setw(10)<<Angle(err_phi0).ToDegree()<<" deg."
	 <<" a_phi= "<<setw(8)<<Angle(aphi).ToDegree()<<" +/- "<<setw(10)
	 <<Angle(err_aphi).ToDegree()<<" deg/250 MHz"<<endl;
    ofr <<setw(8)<<Angle(phi0).ToDegree()<<" "<<setw(8)<<Angle(err_phi0).ToDegree()<<"  "
	<<setw(8)<<Angle(aphi).ToDegree()<<" "<<setw(8)<<Angle(err_aphi).ToDegree()<<"  ";
707
    v_phase[ii]=phase;
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    v_phi_0[ii]=phi0;
    v_err_phi_0[ii]=err_phi0;
    v_a_phi[ii]=aphi;
    v_err_a_phi[ii]=err_aphi;
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    for(size_t j=0; j<NTRK; j++) {
      double Aac=sqrt(v_A[Anum1[ii]][j] * v_A[Anum2[ii]][j]);
      double Ai=(useAac?Aac:v_amp[j]);
715
      double A=mFit.GetParm(2+3*j);   double err_A=mFit.GetParmErr(2+3*j);
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      cout << "  Trk["<<j<<"]  A= "<<A<<" +/- "<<err_A<<"  (A/Ai="<<A/Ai<<")"<<endl;
      v_Acx[ii][j]=A;  
      v_Bcx[ii][j]=complex<double>(0.,0.);
      v_err_Acx[ii][j]=err_A; 
      ofr <<setw(8)<<A<<" "<<setw(8)<<err_A<<" "; 
    }
722
    ofr << endl; 
723
  }
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  cout << " --- Fitted phases: ";
  for(size_t i=0; i<NB_CXCORS; i++) cout<<setw(6)<<Angle(v_phase[i]).ToDegree()<<" ; ";   cout<<endl;
  double dphi23=v_phase[1]-v_phase[0];   if (dphi23<0.) dphi23+=(2.*M_PI);
  double dphi24=v_phase[2]-v_phase[0];   if (dphi24<0.) dphi24+=(2.*M_PI);
  double dphi34=v_phase[2]-v_phase[1];   if (dphi34<0.) dphi34+=(2.*M_PI);
  cout<<" Cx-2x3: "<<setw(6)<<Angle(dphi23).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[3]).ToDegree()<<endl;
  cout<<" Cx-2x4: "<<setw(6)<<Angle(dphi24).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[4]).ToDegree()<<endl;
  cout<<" Cx-3x4: "<<setw(6)<<Angle(dphi34).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[5]).ToDegree()<<endl;
  ofr<<"# Cx-2x3: "<<setw(6)<<Angle(dphi23).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[3]).ToDegree()<<endl;
  ofr<<"# Cx-2x4: "<<setw(6)<<Angle(dphi24).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[4]).ToDegree()<<endl;
  ofr<<"# Cx-3x4: "<<setw(6)<<Angle(dphi34).ToDegree()<<" ==? "<<setw(6)<<Angle(v_phase[5]).ToDegree()<<endl;
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  fit_cx_done=true;
  acxd_.v_cxbeams=v_cxbeams;
737
  acxd_.v_phase=v_phase;
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  acxd_.v_phi_0=v_phi_0;
  acxd_.v_a_phi=v_a_phi;
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  acxd_.v_Acx=v_Acx;
  acxd_.v_Bcx=v_Bcx;
742 743
  return 0;
} 
744

745

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int ACxSetFitter::saveExpectedCx(string outcheckfilename)
{
  cout << "ACxSetFitter::saveExpectedCx() saving expected cross-cor (and visi-data) to file "<<outcheckfilename<<endl;
  POutPersist pox(outcheckfilename);
  size_t NB_CXCORS=acxd_.getNbCrossCor();
  size_t NTRK = acxd_.NbTrk();

  char oname[32];

  for(size_t ii=0; ii<NB_CXCORS; ii++) {
    CxBeam cxbeam=v_cxbeams[ii];
757
    MyCxSignal cxsig( acxd_.v_time_data, acxd_.vv_cxdata, acxd_.vv_cxerr, acxd_.v_freqs, 
758 759 760 761 762
		      tks_.v_interp_elev, tks_.v_interp_sazim, cxbeam, ii);
    for(size_t j=0; j<NTRK; j++) {
      TVector< complex<double> >  signal = cxsig.getDataSignal(j);
      sprintf(oname,"cx_%d_%d",(int)ii+1,(int)j+1);
      pox << PPFNameTag(oname)<<signal;
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      //DBG      cout << " *DBG* getPhase4Freq() phi0="<<acxd_.v_phi_0[ii]<<" a_phi="<<acxd_.v_a_phi[ii]<<" freq="<<acxd_.v_freqs[j]<<endl;
      double phase=cxsig.getPhase4Freq(acxd_.v_phi_0[ii],acxd_.v_a_phi[ii],acxd_.v_freqs[j]);
      TVector< complex<double> >  expsignal = cxsig.getExpectedSignal(j, phase, v_Acx[ii][j]);
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      sprintf(oname,"simcx_%d_%d",(int)ii+1,(int)j+1);
      pox << PPFNameTag(oname)<<expsignal;
      if (ii==0)  {
	Vector tmvec = cxsig.getTimeVec(j);
	sprintf(oname,"tim_%d",(int)j+1);
	pox << PPFNameTag(oname)<<tmvec;
      }
    }
  }
  return 0;
}  
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//------------------------ CxBaselineFitter -------------------------------------
CxBaselineFitter::CxBaselineFitter(vector<AcxDataSet> & v_data, vector<TrackSet> & v_tks)
780 781
  : v_acxd(v_data), v_trks(v_tks), tot_ntrks(0), fit_done(false), simplex_done(false), 
    xi2red(-9.e9), bestfitparam(NULL), err_bestfitparam(NULL)
782 783 784 785 786 787 788 789 790 791 792 793
{
  if (v_acxd.size() != v_trks.size())
    throw ParmError("CxBaselineFitter::CxBaselineFitter(v_data, v_tks) NOT same size v_data,v_tks ");
  if (v_acxd.size() < 1)
    throw ParmError("CxBaselineFitter::CxBaselineFitter(v_data, v_tks) v_data.size()<1 ");
  v_phases.resize(v_acxd[0].getNbAutoCor()-1);
  v_baselineshits.resize(v_acxd[0].getNbAutoCor()-1);
  tot_ntrks=0;
  for(size_t i=0; i<v_acxd.size(); i++) tot_ntrks+=v_acxd[i].NbTrk();
  if (tot_ntrks<1)
    throw ParmError("CxBaselineFitter::CxBaselineFitter(v_data, v_tks) 0 tracks ! tot_ntrks<1 ");

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  size_t nparam = 4*(v_acxd[0].getNbAutoCor()-1);
  bestfitparam = new double[nparam];
  err_bestfitparam = new double[nparam];
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  initFitParams();
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}

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CxBaselineFitter::~CxBaselineFitter()
{
  if (bestfitparam) delete[] bestfitparam;
  if (err_bestfitparam) delete[] err_bestfitparam;
}
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void CxBaselineFitter::initFitParams()
{
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  //DBG  cout << " *DBG* CxBaselineFitter::initFitParams() v_acxd[0].v_phase.size()="<<v_acxd[0].v_phase.size()<<endl;
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  size_t NB_ANTENNES=v_acxd[0].getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=v_acxd[0].getNbCrossCor();
  if (NB_ANTENNES != 4)
    throw PError("CxBaselineFitter::initFitParams() NB_ANTENNES != 4  Current version works only for 4 antenna");
  v_phases.resize(NB_ANTENNES-1);
  v_err_phases.resize(NB_ANTENNES-1);
  v_baselineshits.resize(NB_ANTENNES-1);
  v_err_baselineshits.resize(NB_ANTENNES-1);
  for(size_t i=0; i<(NB_ANTENNES-1); i++) {
    v_phases[i]=v_acxd[0].v_phase[i];   v_err_phases[i]=0.;
    v_baselineshits[i]=Vector3d(0.,0.,0.);
    v_err_baselineshits[i]=Vector3d(0.,0.,0.);
    bestfitparam[i]=v_phases[i];
    err_bestfitparam[i]=0.;
    for(size_t j=0; j<3; j++) {
      bestfitparam[3*(i+1)+j]=err_bestfitparam[3*(i+1)+j]=0.;
    }
  }
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  //DBG  cout << " *DBG* DONE **** CxBaselineFitter::initFitParams()"<<endl;

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}

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int CxBaselineFitter::dofit(string outfilename, bool fgfixbaseline)
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{
  size_t NB_ANTENNES=v_acxd[0].getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=v_acxd[0].getNbCrossCor();
  cout << "======================================================================================"<<endl;
  cout << "------- CxBaselineFitter::dofit()  Performing baseline/phase fit on the 6 cross-cors "<<" TotNbTracks="<<tot_ntrks<<endl;
  
  ofstream ofr(outfilename.c_str());
  ofr << "####  Fitted phases and baseline-shifts (CxBaselineFitter::dofit() ) "<<endl
      << "## NumAntenna  Phase BaselineShiftX  BaselineShiftY BaselineShiftZ  (Phase in degree, BaselineShift in meter) "<<endl;

  int tot_npoints_fit = 0;
  for(size_t i=0; i<v_acxd.size(); i++)
    for(size_t j=0; j<v_acxd[i].NbTrk(); j++)
      tot_npoints_fit += 2*(v_acxd[i].v_time_data[j].size())*NB_CXCORS;
  cout << " Total number of data points for fit="<< tot_npoints_fit<<endl;
  GeneralFitData gdata(1, tot_npoints_fit);
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  int npoints2=0;
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  for(size_t i=0; i<v_acxd.size(); i++)
    for(size_t kcx=0; kcx<NB_CXCORS; kcx++) {
      for(size_t j=0; j<v_acxd[i].NbTrk(); j++)  {
	vector< vector< complex<double> > > & v_cxdata = v_acxd[i].vv_cxdata[j];
	vector< vector<double> > & v_cxerr = v_acxd[i].vv_cxerr[j];
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	for(size_t l=0; l<v_acxd[i].v_time_data[j].size(); l++) {
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	  gdata.AddData1(v_acxd[i].v_time_data[j][l],v_cxdata[kcx][l].real(),v_cxerr[kcx][l]); // Fill x, y and error on y
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	  gdata.AddData1(v_acxd[i].v_time_data[j][l],v_cxdata[kcx][l].imag(),v_cxerr[kcx][l]); // Fill x, y and error on y
	  npoints2+=2;
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	}
      }
    }

  My6CxGenXi2B gxi2(v_acxd, v_trks); 
  GeneralFit mFit(&gxi2);
  mFit.SetData(&gdata);        // connect data to the fitter , here the data is unused - gxi2 includes its data 
  mFit.SetMaxStep(1000);
  
  // SetParam(int n,double value, double step,double min=1., double max=-1.);
  for(size_t i=0; i<(NB_ANTENNES-1); i++) {
    char pname[32];
    sprintf(pname,"Phase_%d",(int)(i+2));
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    mFit.SetParam(i,pname,v_phases[i],M_PI/180.,0.,2.5*M_PI);
    v_err_phases[i]=0.;
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    sprintf(pname,"BaselineShift_X_%d",(int)(i+2));
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    mFit.SetParam(3+3*i,pname,v_baselineshits[i].X(),0.02,-0.25,0.25);
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    sprintf(pname,"BaselineShift_Y_%d",(int)(i+2));
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    mFit.SetParam(4+3*i,pname,v_baselineshits[i].Y(),0.02,-0.25,0.25);
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    sprintf(pname,"BaselineShift_Z_%d",(int)(i+2));
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    mFit.SetParam(5+3*i,pname,v_baselineshits[i].Z(),0.02,-0.25,0.25);
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    if (fgfixbaseline) {
      cout << " ... fitting phases only, fixed baselines "<<endl;
      mFit.SetFix(3+3*i); mFit.SetFix(4+3*i);  mFit.SetFix(5+3*i);
    }
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  }
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  cout << " Performing the fit (tot_npoints_fit= "<<tot_npoints_fit<<" ?= (npoints2="<<npoints2<<") ..."<< endl;
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  rcfit = mFit.Fit();  xi2red=-99999.;
  cout<< "------ Fit result Reduce_Chisquare = " << mFit.GetChi2Red()<< " nstep="<<mFit.GetNStep() << " rc="<<rcfit<<endl;
  mFit.PrintFit();

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  for(size_t j=0; j<4; j++) 
    for(size_t i=0; i<(NB_ANTENNES-1); i++) {
      bestfitparam[j*3+i]=mFit.GetParmErr(j*3+i);
      err_bestfitparam[j*3+i]=mFit.GetParmErr(j*3+i);
    }

  for(size_t i=0; i<(NB_ANTENNES-1); i++) {
    v_phases[i]=mFit.GetParm(i);      
    v_err_phases[i]=mFit.GetParmErr(i);
    double xs=mFit.GetParm(i*3+3);  
    double exs=mFit.GetParmErr(i*3+3);  
    double ys=mFit.GetParm(i*3+4);  
    double eys=mFit.GetParmErr(i*3+4);  
    double zs=mFit.GetParm(i*3+5);  
    double ezs=mFit.GetParmErr(i*3+5);  
    v_baselineshits[i]=Vector3d(xs,ys,zs);
    v_err_baselineshits[i]=Vector3d(exs,eys,ezs);

  }
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  fit_done=true;
  return 0;
}
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int CxBaselineFitter::doSimplexMinimize()
{
  size_t NB_ANTENNES=v_acxd[0].getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=v_acxd[0].getNbCrossCor();
  cout << "======================================================================================"<<endl;
  cout << "------- CxBaselineFitter::doSimplexMinimize()  Performing baseline/phase determination using the 6 cross-cors "<<" TotNbTracks="<<tot_ntrks<<endl;

  if (NB_ANTENNES != 4)
    throw PError("CxBaselineFitter::doSimplexMinimize() NB_ANTENNES != 4  Current version works only for 4 antenna");

  My6CxMinZFunc mzfunc(v_acxd, v_trks); 
  MinZSimplex simplex(&mzfunc);
  // Guess the center and step for constructing the initial simplex
  size_t nparam = 4*(NB_ANTENNES-1);
  Vector P0(nparam); 
  Vector step(nparam);
  for(size_t i=0; i<(NB_ANTENNES-1); i++) {
    P0(i)=v_acxd[0].v_phase[i];
    step(i)=M_PI/6.;
    for(size_t j=0;j<3;j++) {
      P0((i+1)*3+j)=0.;
      step((i+1)*3+j)=0.05;
    }
  }
  cout << " Initial Point: "<<P0.Transpose()<<endl;
  cout << " Initial Step: "<<step.Transpose()<<endl;
  cout << "  Initial Xi2= " << mzfunc.Value(P0.Data())<<endl;

  simplex.SetInitialPoint(P0);
  simplex.SetInitialStep(step);
  simplex.SetPrtLevel(_prtlevel_);
  Vector oparm(nparam);
  int rc = simplex.Minimize(oparm);
  if (rc != 0) {
    string srt; 
    int sr = simplex.StopReason(srt);
    cout << " Convergence Pb, StopReason= " << sr << " : " << srt << endl;
  }
  else {
    cout << " Converged: NStep= " << simplex.NbIter() << " Best Xi2="<<  mzfunc.Value(oparm.Data()) << endl;
    simplex_done=true;
    for(size_t i=0; i<(NB_ANTENNES-1); i++) {
      v_phases[i]=oparm(i);      
      double xs=oparm(i*3+3);  
      double ys=oparm(i*3+4);  
      double zs=oparm(i*3+5);  
      v_baselineshits[i]=Vector3d(xs,ys,zs);
      cout << " ANTENNE["<<i+2<<"] : Phase="<<v_phases[i]<<" BaseLineShift="<<v_baselineshits[i]<<endl;
    }
  }

  return 0;
}

int CxBaselineFitter::doCheck(bool fgminimize)
{
  size_t NB_ANTENNES=v_acxd[0].getNbAutoCor();   // nombre d'antennes 
  size_t NB_CXCORS=v_acxd[0].getNbCrossCor();
  cout << "======================================================================================"<<endl;
  cout << "------- CxBaselineFitter::doCheck()  Performing baseline/phase determination using the 6 cross-cors "<<" TotNbTracks="<<tot_ntrks<<endl;

  if (NB_ANTENNES != 4)
    throw PError("CxBaselineFitter::doCheck() NB_ANTENNES != 4  Current version works only for 4 antenna");

  My6CxMinZFunc mzfunc(v_acxd, v_trks); 
  mzfunc.SetPrintLevel(_prtlevel_);
  // Guess the center and step for constructing the initial simplex
  size_t nparam = 4*(NB_ANTENNES-1);
  Vector P0(nparam), PC(nparam); 
  Vector step(nparam);
  for(size_t i=0; i<(NB_ANTENNES-1); i++) {
    P0(i)=v_acxd[0].v_phase[i];
    step(i)=M_PI;
    for(size_t j=0;j<3;j++) {
      P0((i+1)*3+j)=0.;
      step((i+1)*3+j)=0.20;
    }
  }
  cout << " ---- Initial Point: "<<P0.Transpose()<<endl;
  cout << "  Initial Xi2= " << mzfunc.Value(P0.Data())<<endl;

  double pstep=M_PI/20.;
  double zstep=0.05;

  double bestxi2=9.e19;
  Vector oparm(nparam);
  size_t cnt=0;

  for(int i1=-1; i1<=1; i1++) {
    PC(0)=P0(0)+(double)i1*pstep;
    for(int i2=-1; i2<=1; i2++) {
      PC(1)=P0(1)+(double)i2*pstep;
      for(int i3=-1; i3<=1; i3++) {
	PC(2)=P0(2)+(double)i3*pstep;
	for(int j1=-1; j1<=1; j1++) {   
	  PC(5)=P0(5)+(double)j1*zstep;
	  for(int j2=-1; j2<=1; j2++) {
	    PC(8)=P0(8)+(double)j2*zstep;
	    for(int j3=-1; j3<=0; j3++) {
	      PC(11)=P0(11)+(double)j3*zstep;
	      double xi2=mzfunc.Value(PC.Data());
	      if (xi2<bestxi2) { bestxi2=xi2;  oparm=PC; }
	      cnt++;
	    }
	  }
	}
      }
    }
  }

  cout << "End of Check-Loop Count= " << cnt << " Best Xi2="<<  mzfunc.Value(oparm.Data()) << " for :"<<endl;
  cout << oparm.Transpose();

  return 0;
}

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int CxBaselineFitter::saveExpectedCx(string outcheckfilename)
{
  cout << "CxBaselineFitter::saveExpectedCx() saving expected cross-cor (and visi-data) to file "<<outcheckfilename<<endl;
  POutPersist pox(outcheckfilename);
  size_t NB_CXCORS=v_acxd[0].getNbCrossCor();
  char oname[48];

  My6CxSignalsB  cxsigb(v_acxd, v_trks);
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  cxsigb.SetPrintLevel(_prtlevel_);

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  for(size_t i=0; i<v_acxd.size(); i++) {
    for(size_t j=0; j<v_acxd[i].NbTrk(); j++) {
      Vector tmvec = cxsigb.getTimeVec(i,j);
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      sprintf(oname,"tim_%d_%d",(int)j+1,(int)i+1);
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      pox << PPFNameTag(oname)<<tmvec;
      for(size_t kcx=0; kcx<NB_CXCORS; kcx++) {
	TVector< complex<double> >  signal = cxsigb.getDataSignal(i,j,kcx);
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	sprintf(oname,"cx_%d_%d_%d",(int)kcx+1,(int)j+1,(int)i+1);
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	pox << PPFNameTag(oname)<<signal;
	TVector< complex<double> >  expsignal = cxsigb.getExpectedSignal(i,j,kcx,bestfitparam);
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	sprintf(oname,"simcx_%d_%d_%d",(int)kcx+1,(int)j+1,(int)i+1);
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	pox << PPFNameTag(oname)<<expsignal;
      }
    }
  }
  return 0;
}