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/* DATAIO - FITS-IDI interface to PolConvert
Copyright (C) 2013 Ivan Marti-Vidal
Nordic Node of EU ALMA Regional Center (Onsala, Sweden)
Max-Planck-Institut fuer Radioastronomie (Bonn, Germany)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#include <sys/types.h>
#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <dirent.h>
#include "DataIO.h"
#include "fitsio.h"
//#define NIOBUF = 1;
DataIO::~DataIO() {
};
DataIO::DataIO() { printf("\nCreating VLBI data structure");};
// SELF-EXPLANATORY FUNCTIONS:
int DataIO::getNfreqs() {return Nfreqs;}; // NUMBER OF IFs
int DataIO::getNant() {return Nants;}; // TOTAL NUMBER OF ANTENNAS
int DataIO::getNchan(int freqid) {return Freqs[freqid].Nchan;}; // # OF CHANNEL IN freqid IF
long DataIO::getMixedNvis() {return NLinVis;}; // NUMBER OF MIXED-POLARIZATION VISIBILITIES FOUND
// GET FREQUENCIES OF CURRENT IF:
void DataIO::getFrequencies(double* output){
memcpy(output,Freqvals[currFreq],Freqs[currFreq].Nchan*sizeof(double));
};
// CHECK WHETHER SOMETHING FAILED:
bool DataIO::succeed(){return success;};
// GET FIRST DAY OF OBSERVATION (MODIFIED JULIAN DATE)
double DataIO::getDay0(){return day0;};
void DataIO::getParAng(int sidx, int Ant1, int Ant2, double*UVW, double &P1, double &P2){
double V2, Bx, By, Bz;
double CH, SH, CT1, CT2, HAng, H1, H2;
int ibas;
if(sidx<Geometry->NtotSou && Ant1<Geometry->NtotAnt && Ant2<Geometry->NtotAnt){
V2 = Geometry->SinDec[sidx]*UVW[1] - Geometry->CosDec[sidx]*UVW[2];
ibas = Geometry->BasNum[Ant1][Ant2];
if (ibas<0){
ibas = -ibas;
Bx = -Geometry->BaseLine[0][ibas];
By = -Geometry->BaseLine[1][ibas];
Bz = -Geometry->BaseLine[2][ibas];
} else {
Bx = Geometry->BaseLine[0][ibas];
By = Geometry->BaseLine[1][ibas];
Bz = Geometry->BaseLine[2][ibas];
};
CH = (UVW[0]*By - V2*Bx); // /(By**2. + Bx**2.);
SH = (UVW[0]*Bx + V2*By); // /(By**2. + Bx**2.);
CT1 = Geometry->CosDec[sidx]*tan(Geometry->Lat[Ant1]);
CT2 = Geometry->CosDec[sidx]*tan(Geometry->Lat[Ant2]);
HAng = atan2(SH,CH);
H1 = HAng + Geometry->AntLon[Ant1];
H2 = HAng + Geometry->AntLon[Ant2];
P1 = atan2(sin(H1), CT1 - Geometry->SinDec[sidx]*cos(H1));
P2 = atan2(sin(H2), CT2 - Geometry->SinDec[sidx]*cos(H2));
} else {
P1 = 0.0;
P2 = 0.0;
};
};
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