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DataIOSWIN.cpp
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/* Copyright (C) 2013-2023 Ivan Marti-Vidal
Nordic Node of EU ALMA Regional Center (Onsala, Sweden)
Max-Planck-Institut fuer Radioastronomie (Bonn, Germany)
University of Valencia (Spain)
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 <algorithm>
#include <sys/types.h>
#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <dirent.h>
#include "./DataIOSWIN.h"
DataIOSWIN::~DataIOSWIN() {
int i, j;
free(Records);
free(ParAng[0]);
free(ParAng[1]);
free(is1orig);
free(is2orig);
free(is1);
free(is2);
free(UVDist);
for (i=0; i<nautos; i++){
delete[] AutoCorrs[i].AC;
};
free(AutoCorrs);
delete[] linAnts;
delete[] NAV;
delete[] Freqs;
delete[] is1;
delete[] is2;
delete[] UVDist;
for (i=0; i<4; i++){
delete[] currentVis[i];
delete[] bufferVis[i];
delete[] auxVis[i];
};
for(i=0; i<NLinAnt;i++){
for(j=0; j<Nfreqs; j++){delete[] averAutocorrs[i][j];};
delete[] averAutocorrs[i];
};
delete[] averAutocorrs;
for(i=0;i<Nfreqs;i++){
delete[] Freqvals[i];
};
};
DataIOSWIN::DataIOSWIN(int nfiledifx, std::string* difxfiles, int NlinAnt,
int *LinAnt, double *Range, int nIF, int *nChan, int nIF2Conv,
int *IF2Conv, int IFoffset, int Afilt, int *NchanAC,
double **FreqVal, bool Overwrite, bool doTest, bool doSolve,
int saveSource, double jd0, ArrayGeometry *Geom, bool doPar,
FILE *logF) {
doWriteCirc = doSolve;
nfiles = nfiledifx;
int i, j;
AutoCorrMedianFilter = Afilt/2;
nDoIF = nIF2Conv;
DoIF = IF2Conv;
IFOffset = IFoffset;
doParang = doPar;
logFile = logF;
Geometry = Geom;
isTwoLinear = false;
success = true;
NLinAnt = NlinAnt;
linAnts = new int[NlinAnt];
NAV = new int[NlinAnt];
for (i=0;i<NlinAnt;i++){
linAnts[i] = LinAnt[i];
NAV[i] = NchanAC[i];
};
AutoCorrs = (AutoCorrelation *) malloc(RECBUFFER*sizeof(AutoCorrelation));
Records = (Record *) malloc(RECBUFFER*sizeof(Record));
is1orig = (bool *) malloc(RECBUFFER*sizeof(bool));
is2orig = (bool *) malloc(RECBUFFER*sizeof(bool));
ParAng[0] = (double *) malloc(RECBUFFER*sizeof(double));
ParAng[1] = (double *) malloc(RECBUFFER*sizeof(double));
UVDist = (double *) malloc(RECBUFFER*sizeof(double));
is1 = new bool[RECBUFFER];
is2 = new bool[RECBUFFER];
day0 = jd0 ;
// set true in setCurrentIF() to capture some first time stuff
debugNewIF = false;
currFreq = 0;
currVis = 0;
doRange = Range;
isAutoCorr = false;
// READ FREQUENCIES FOR ALL IFs:
Nfreqs = nIF;
int MaxNChan = 0;
Freqs = new FreqSetup[Nfreqs];
for(i=0;i<nIF;i++){
if (nChan[i]>MaxNChan){MaxNChan = nChan[i];};
Freqvals[i] = new double[nChan[i]];
Freqs[i].Nchan = nChan[i];
Freqs[i].BW = FreqVal[i][nChan[i]-1] - FreqVal[i][0];
Freqs[i].Nu0 = FreqVal[i][0];
Freqs[i].SB = 0;
memcpy(Freqvals[i], FreqVal[i],nChan[i]*sizeof(double));
};
for (i=0; i<4; i++){
currentVis[i] = new std::complex<float>[MaxNChan+1];
bufferVis[i] = new std::complex<float>[MaxNChan+1];
auxVis[i] = new std::complex<float>[MaxNChan+1];
};
isOverWrite = Overwrite ;
openOutFiles(difxfiles);
printf("\nReading header.\n");fflush(stdout);
readHeader(doTest,saveSource);
printf("DONE.\n");fflush(stdout);
// Prepare memory for average autocorrs:
averAutocorrs = new float**[NLinAnt];
for(i=0; i<NLinAnt;i++){
averAutocorrs[i] = new float*[Nfreqs];
for(j=0; j<Nfreqs; j++){averAutocorrs[i][j] = new float[Freqs[j].Nchan];};
};
averageAutocorrs();
};
double getMedian(double *X, int n0, int N){
int i,j,Nmed;
double Aux;
if(N==1){return X[n0];};
double *Sorted = new double[N];
for(i=0; i<N; i++){Sorted[i] = X[i+n0];};
for(i=0;i<N-1;i++){
for(j=i+1; j<N; j++){
if(Sorted[i]>Sorted[j]){Aux = Sorted[i]; Sorted[i]=Sorted[j]; Sorted[j] = Aux;};
};
};
if(N%2){
Nmed = N/2 -1;
return (Sorted[Nmed] + Sorted[Nmed+1])/2.;
} else {
Nmed = (N+1)/2 -1;
return Sorted[Nmed];
};
};
void DataIOSWIN::averageAutocorrs(){
int i, j, k,l, l2, NHf;
double Nx, Ny;
double *TempX, *TempY;
for(i=0;i<NLinAnt;i++){
for(j=0; j<Nfreqs; j++){
TempX = new double[Freqs[j].Nchan];
TempY = new double[Freqs[j].Nchan];
for(k=0; k<Freqs[j].Nchan; k++){
TempX[k] = 0.0; TempY[k] = 0.0;
};
Nx = 0. ; Ny = 0.;
for(k=0; k<nautos;k++){
if(AutoCorrs[k].AntIdx == i && AutoCorrs[k].IF == j){
if (AutoCorrs[k].Pol == 1){
Nx += 1.;
for(l=0; l<Freqs[j].Nchan; l++){
TempX[l] += AutoCorrs[k].AC[l];
};
};
if (AutoCorrs[k].Pol == 2){
Ny += 1.;
for(l=0; l<Freqs[j].Nchan; l++){
TempY[l] += AutoCorrs[k].AC[l];
};
};
};
};
if(NAV[i]>0 && Nx > 0. && Ny > 0.){
NHf = NAV[i]/2;
for(l=0; l<Freqs[j].Nchan; l++){
TempX[l] = std::sqrt(TempY[l]/TempX[l]*Nx/Ny);
};
for(l=0; l< NHf; l++){
averAutocorrs[i][j][l] = getMedian(TempX,0,NAV[i]);
l2 = Freqs[j].Nchan - l -1;
averAutocorrs[i][j][l2] = getMedian(TempX,Freqs[j].Nchan-NAV[i]-1,NAV[i]);
};
for(l=NHf; l< Freqs[j].Nchan - NHf; l++){
l2 = l - NHf;
averAutocorrs[i][j][l] = getMedian(TempX,l2,NAV[i]);
};
} else {
for(l=0; l<Freqs[j].Nchan; l++){
averAutocorrs[i][j][l] = 1.0;
};
};
delete[] TempX;
delete[] TempY;
};
};
};
void DataIOSWIN::finish(){
int auxI;
for (auxI=0; auxI<nfiles; auxI++) {
newdifx[auxI].close();
if (!isOverWrite){olddifx[auxI].close();};
};
};
void DataIOSWIN::openOutFiles(std::string* difxfiles) {
std::string SEP = "NEW/";
int auxI;
olddifx = new std::ifstream[nfiles];
newdifx = new std::fstream[nfiles];
long begin, end;
filesizes = new long[nfiles];
for (auxI=0; auxI<nfiles; auxI++) {
olddifx[auxI].open((difxfiles[auxI]).c_str(), std::ios::in | std::ios::binary);
// Get file size:
begin = olddifx[auxI].tellg();
olddifx[auxI].seekg(0, olddifx[auxI].end);
end = olddifx[auxI].tellg();
filesizes[auxI] = end - begin;
olddifx[auxI].clear();
if (!isOverWrite) {
newdifx[auxI].open((SEP+difxfiles[auxI]).c_str(), std::ios::out | std::ios::binary | std::ios::in);
newdifx[auxI] << olddifx[auxI].rdbuf();
newdifx[auxI].close();
newdifx[auxI].open((SEP+difxfiles[auxI]).c_str(), std::ios::out | std::ios::binary | std::ios::in);
olddifx[auxI].clear();
} else {
newdifx[auxI].open((difxfiles[auxI]).c_str(), std::ios::out | std::ios::binary | std::ios::in);
};
};
};
// SET IF TO CHANGE:
bool DataIOSWIN::setCurrentIF(int i){
if ( i>=Nfreqs || i<0 ){success=false;
sprintf(message,"\nERROR! IF %i CANNOT BE FOUND!\n",i+1);
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
success=false; return success;
};
debugNewIF = true;
currFreq = i;
currVis = 0;
memcpy(is1, is1orig, nrec*sizeof(bool));
memcpy(is2, is2orig, nrec*sizeof(bool));
return success;
};
void DataIOSWIN::readHeader(bool doTest, int saveSource) {
long loc, beg, end, polpos;
int basel, fridx, cfidx, mjd, sidx, ii, jj;
double secs, daytemp, daytemp2;
double *UVW = new double[3];
int UVWsize = 3*sizeof(double);
char *pol = new char[2];
double AuxPA1, AuxPA2;
bool isInIF = false;
int isIFidx = 0;
// AUXILIARY BINARY FILES TO STORE CIRCULAR VISIBILITIES:
FILE **circFile = new FILE*[nDoIF];
// AUXILIARY BINARY FILES TO STORE AUTO-CORRELATIONS:
FILE **autoCorrs = new FILE*[nDoIF];
// FIXME:
// the circFile[] should perhaps be restricted to the IFs
// that are actually needed, not all of them....
// NOTE (IMV): These are also used when solving for the cross-pol gains.
// OPEN AUXILIARY BINARY FILES:
if (doWriteCirc){
for (ii=0; ii<nDoIF; ii++){
sprintf(message,"POLCONVERT.FRINGE/AUTOCORRS_IF%i",DoIF[ii]+1);
autoCorrs[ii] = fopen(message,"wb");
};
for (ii=0; ii<nDoIF; ii++){
sprintf(message,"POLCONVERT.FRINGE/OTHERS.FRINGE_IF%i",DoIF[ii]+1);
circFile[ii] = fopen(message,"wb");
fwrite(&Freqs[DoIF[ii]].Nchan,sizeof(int),1,circFile[ii]);
for (jj=0;jj<Freqs[DoIF[ii]].Nchan;jj++){
fwrite(&Freqvals[DoIF[ii]][jj],sizeof(double),1,circFile[ii]);
};
};
};
success = true;
free(AutoCorrs);
free(Records);
free(ParAng[0]);
free(ParAng[1]);
free(UVDist);
free(is1orig);
free(is2orig);
delete is1;
delete is2;
AutoCorrs = (AutoCorrelation *) malloc(RECBUFFER*sizeof(AutoCorrelation));
Records = (Record *) malloc(RECBUFFER*sizeof(Record));
is1orig = (bool *) malloc(RECBUFFER*sizeof(bool));
is2orig = (bool *) malloc(RECBUFFER*sizeof(bool));
ParAng[0] = (double *) malloc(RECBUFFER*sizeof(double));
ParAng[1] = (double *) malloc(RECBUFFER*sizeof(double));
UVDist = (double *) malloc(RECBUFFER*sizeof(double));
nautos = 0;
nrec = 0;
long CURRSIZE = RECBUFFER;
long AUTOSIZE = RECBUFFER;
int ant1, ant2, auxI, auxJ;
double auxD;
//Assume binary index (i.e., DiFX version >= 2.0):
sprintf(message,"\nThere are %i IFs.",Nfreqs);
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
sprintf(message,"\n\n Searching for visibilities with mixed (or linear) polarization.\n\n");
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
long bperp;
long RecordSize = 5*sizeof(int) + 2*sizeof(double) + 2*sizeof(char) + endhead;
for (auxI=0; auxI<nfiles; auxI++) {
loc = 8;
// Bits per percentage:
bperp = filesizes[auxI]/100; if(bperp==0){bperp=1;};
sprintf(message,"\n\nReading file %i of %i (size %li MB)\n",auxI+1,nfiles,filesizes[auxI]/(1024*1024));
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
while(!newdifx[auxI].eof()) {
newdifx[auxI].seekg(loc,newdifx[auxI].beg);
newdifx[auxI].read(reinterpret_cast<char*>(&basel), sizeof(int));
newdifx[auxI].read(reinterpret_cast<char*>(&mjd), sizeof(int));
newdifx[auxI].read(reinterpret_cast<char*>(&secs), sizeof(double));
newdifx[auxI].read(reinterpret_cast<char*>(&cfidx), sizeof(int));
newdifx[auxI].read(reinterpret_cast<char*>(&sidx), sizeof(int));
newdifx[auxI].read(reinterpret_cast<char*>(&fridx), sizeof(int));
polpos = newdifx[auxI].tellg();
newdifx[auxI].read(pol, 2*sizeof(char));
newdifx[auxI].ignore(sizeof(int)+sizeof(double)); // Pulsar bin + Weight
newdifx[auxI].read(reinterpret_cast<char*>(UVW), UVWsize);
// OBSOLETE! Now, source ids in SWIN are self-consistent among
// (concatenated) scans:
// sidx += auxI;
////////////////
// WHAT IS THE DIFFERENCE BETWEEN CFIDX AND FRIDX !!!!!!!!
////////////////
beg = newdifx[auxI].tellg();
isInIF = false;
for(auxJ=0;auxJ<nDoIF;auxJ++){
if (fridx==DoIF[auxJ] || fridx==DoIF[auxJ]+IFOffset){isInIF=true; isIFidx = auxJ; fridx = DoIF[auxJ]; break;};
};
if (beg>0) {
end = beg + (Freqs[fridx].Nchan)*sizeof(cplx32f);
loc = end + 2*sizeof(int); // Control word and header version
// RE-ALLOCATE MEMORY IF BUFFER IS FULL:
if (nrec == CURRSIZE) {
CURRSIZE += RECBUFFER;
Records = (Record*) realloc(Records, CURRSIZE*sizeof(Record));
if(!Records){
success = false;
goto FREE;
};
is1orig = (bool*) realloc(is1orig, CURRSIZE*sizeof(bool));
if(!is1orig){
success = false;
goto FREE;
};
is2orig = (bool*) realloc(is2orig, CURRSIZE*sizeof(bool));
if(!is2orig){
success = false;
goto FREE;
};
ParAng[0] = (double *) realloc(ParAng[0], CURRSIZE*sizeof(double));
ParAng[1] = (double *) realloc(ParAng[1], CURRSIZE*sizeof(double));
UVDist = (double *) realloc(UVDist, CURRSIZE*sizeof(double));
if(!ParAng[0] || !ParAng[1]){
success = false;
goto FREE;
};
};
// Check if we are in the time window:
secs /= 86400.;
daytemp = ((double) mjd) + secs - day0;
if(isInIF && daytemp>=doRange[0] && daytemp<=doRange[1]){
// Check if a linear-feed antenna is in the baseline:
ant1 = basel / 256;
ant2 = basel % 256;
is1orig[nrec] = false ; is2orig[nrec] = false;
for (auxJ=0;auxJ<NLinAnt;auxJ++){
if(ant1 == linAnts[auxJ]){
is1orig[nrec] = true;
if (pol[0] == 'R' || pol[0]=='X'){
pol[0] = 'X';
} else {
pol[0] = 'Y';
};
};
if(ant2 == linAnts[auxJ]){
is2orig[nrec] = true;
if (pol[1] == 'R' || pol[1]=='X'){
pol[1] = 'X';
} else {
pol[1] = 'Y';
};
};
};
// Derive the parallactic angles:
daytemp2 = (daytemp + day0)*86400.;
getParAng(sidx,ant1-1,ant2-1,UVW,daytemp2,AuxPA1,AuxPA2);
// Read auto-correlations:
if (ant1==ant2){
auxD = 0.0;
newdifx[auxI].seekg(beg,newdifx[auxI].beg);
newdifx[auxI].read(reinterpret_cast<char*>(currentVis[0]),end-beg);
auxJ = -1;
if( (pol[0]=='R' || pol[0]=='X') && (pol[1]=='R' || pol[1]=='X')){auxJ=1;};
if( (pol[0]=='L' || pol[0]=='Y') && (pol[1]=='L' || pol[1]=='Y')){auxJ=2;};
if (auxJ>0){
AutoCorrs[nautos].AntIdx = ant1-1;
AutoCorrs[nautos].IF = fridx;
AutoCorrs[nautos].JD = daytemp;
AutoCorrs[nautos].Pol = auxJ;
AutoCorrs[nautos].AC = new double[Freqs[fridx].Nchan];
for (auxJ=1; auxJ<Freqs[fridx].Nchan-1; auxJ++){
AutoCorrs[nautos].AC[auxJ] = std::abs(currentVis[0][auxJ]);
};
nautos += 1;
// Reallocate memory, if needed:
if (nautos==AUTOSIZE){
AUTOSIZE += RECBUFFER;
AutoCorrs = (AutoCorrelation*) realloc(AutoCorrs, AUTOSIZE*sizeof(AutoCorrelation));
};
if(doWriteCirc){
fwrite(&ant1,sizeof(int),1,autoCorrs[isIFidx]);
fwrite(&auxJ,sizeof(int),1,autoCorrs[isIFidx]);
fwrite(&fridx,sizeof(int),1,autoCorrs[isIFidx]);
fwrite(&daytemp,sizeof(double),1,autoCorrs[isIFidx]);
fwrite(&auxD,sizeof(double),1,autoCorrs[isIFidx]);
};
};
};
// Write circular visibilities (assume standard pol. ordering):
if ((saveSource<0 || sidx == saveSource) &&
doWriteCirc && (!is1orig[nrec] && !is2orig[nrec]) &&
(pol[0] == 'R' || pol[0]=='X') && (pol[1] == 'R' || pol[1]=='X')){
for (auxJ=0; auxJ<4; auxJ++){
newdifx[auxI].seekg(beg + (RecordSize + (Freqs[fridx].Nchan)*sizeof(cplx32f))*auxJ, newdifx[auxI].beg);
newdifx[auxI].read(reinterpret_cast<char*>(currentVis[auxJ]),end-beg);
};
fwrite(&daytemp2,sizeof(double),1,circFile[isIFidx]);
fwrite(&ant1,sizeof(int),1,circFile[isIFidx]);
fwrite(&ant2,sizeof(int),1,circFile[isIFidx]);
fwrite(&AuxPA1,sizeof(double),1,circFile[isIFidx]);
fwrite(&AuxPA2,sizeof(double),1,circFile[isIFidx]);
for (auxJ=0;auxJ<Freqs[fridx].Nchan;auxJ++){
fwrite(¤tVis[0][auxJ],sizeof(std::complex<float>),1,circFile[isIFidx]);
fwrite(¤tVis[2][auxJ],sizeof(std::complex<float>),1,circFile[isIFidx]);
fwrite(¤tVis[3][auxJ],sizeof(std::complex<float>),1,circFile[isIFidx]);
fwrite(¤tVis[1][auxJ],sizeof(std::complex<float>),1,circFile[isIFidx]);
};
};
// Read entry metadata:
if (is1orig[nrec] || is2orig[nrec]) {
Records[nrec].Baseline = basel;
Records[nrec].Source = sidx;
Records[nrec].fileNumber = auxI;
Records[nrec].Time = daytemp2;
Records[nrec].notUsed = true;
Records[nrec].Antennas[0] = ant1;
Records[nrec].Antennas[1] = ant2;
Records[nrec].byteIni = beg;
Records[nrec].byteEnd = end;
Records[nrec].Pol[0] = pol[0];
Records[nrec].Pol[1] = pol[1];
Records[nrec].freqIndex = fridx;
// Derive the parallactic angles:
ParAng[0][nrec] = AuxPA1 ; ParAng[1][nrec] = AuxPA2;
UVDist[nrec] = UVW[0]*UVW[0] + UVW[1]*UVW[1];
/////////
// Overwrite pol label entry in SWIN file:
if(!doTest){
if(pol[0]=='X'){pol[0]='R';} else if(pol[0]=='Y'){pol[0]='L';};
if(pol[1]=='X'){pol[1]='R';} else if(pol[1]=='Y'){pol[1]='L';};
newdifx[auxI].seekp(polpos, newdifx[auxI].beg);
newdifx[auxI].write(reinterpret_cast<char*>(pol),2*sizeof(char));
};
/////////
nrec ++;
};
};
};
};
// Rewind:
newdifx[auxI].clear();
newdifx[auxI].seekg(0,newdifx[auxI].beg);
};
// day0 is JD (not MJD):
day0 += 2400000.5 ;
sprintf(message,"day0 is %lf", day0);
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
// Case of error in reading files:
FREE:
if (!success){
free(Records);
free(ParAng[0]);
free(ParAng[1]);
free(is1orig);
free(is2orig);
free(is1);
free(is2);
free(UVDist);
Records = nullptr; ParAng[0]=nullptr; ParAng[1]=nullptr;
is1orig=nullptr; is2orig=nullptr; UVDist=nullptr;
};
// CLOSE AUXILIARY BINARY FILES:
if (doWriteCirc){
for (ii=0; ii<nDoIF; ii++){
fclose(circFile[ii]);
fclose(autoCorrs[ii]);
};
};
delete[] circFile;
if (nrec==0) {
sprintf(message,"\n NO VALID DATA FOUND!");
fprintf(logFile,"%s",message); std::cout<<message; fflush(logFile);
success = false;
} else {
// Allocate memory for booleans:
NLinVis = nrec/4;
is1 = new bool[nrec];
is2 = new bool[nrec];
};
delete[] pol;
};
bool DataIOSWIN::getNextMixedVis(double &JDTime, int &antenna, int &otherAnt, bool &conj, int &calField) {
long rec, rec1, k;
int basel, idx, fnum, field;
double time;
long indices[4];
bool complete;
for (idx=0; idx<4; idx++) indices[idx] = -1;
if (NLinVis==0){return false;};
///////////////////
// BEWARE WHETHER currFreq IS ZERO-BASED!!!!!
///////////////////
// Find the four correlation products:
canPlot=false;
// Note that autocorrs are read, converted and written twice;
// once for ref and once for rem (one of which is conjugated
// for the conversion). The logic here goes through all the
// records (indexed by rec) to find the first unused visibility
// and then looks for all the matches by baseline, time and
// frequency (indexed by rec1). The logic variables is1 and is2
// are copies of is1orig and is2orig which are true if the ant
// at one or the other end of the baseline is in the linear-feed
// list and are reset to false once conversion happens (?).
//
// isTwoLinear means both antennas are linear-feed
// complete true means otherwise
while(true){
idx = 0;
for (rec=0; rec<nrec; rec++) {
if (Records[rec].notUsed && (Records[rec].freqIndex==currFreq)) {
indices[idx] = rec;
complete = !(is1[rec] && is2[rec]);
if(!complete){isTwoLinear=true;};
if (complete){
canPlot = true;
Records[rec].notUsed = false;}; // since used as idx==0
idx ++;
basel = Records[rec].Baseline;
time = Records[rec].Time;
field = Records[rec].Source;
currVis = rec;
for (rec1=rec+1; rec1<nrec; rec1++) {
if (Records[rec1].Baseline==basel &&
Records[rec1].Time==time &&
Records[rec1].freqIndex==currFreq) {
indices[idx] = rec1; idx ++;
if (complete){
Records[rec1].notUsed = false;};
if (idx==4) {break;}; // since we have 4 products
};
};
break; // since we have searched the entire output
// FIXME: optimization: DIFX cannot infinitely buffer data,
// so one could potentially break out here after a sufficient
// amount of due dilligence.
};
};
// If no more mixed-pol visibilities are found, we return false:
// If not all the 4 products are found, report a warning:
// FIXME: actually this prints what exists, not what is missing,
// and in the case of Autocorrs, well, sometimes only 2 products exist
convisok = true;
if (idx==0) {
return false;}
else if (idx <4) {
sprintf(message,"WARNING: Missing: Baseline: %08x - Time: %f sec: ",
basel,time - Records[0].Time);
fprintf(logFile,"%s",message); fflush(logFile);
for (rec=0; rec<idx; rec++) {
sprintf(message,"%c%c ",
Records[indices[rec]].Pol[0],Records[indices[rec]].Pol[1]);
fprintf(logFile,"%s",message); fflush(logFile);
};
if(idx==2){
indices[2] = -1; indices[3] = -1; break;
};
if(idx==1){
indices[1] = -1; indices[2] = -1; indices[3] = -1;
convisok = false;
sprintf(message,"\n ERROR! ONLY ONE LINEAR POLARIZATION CHANNEL WILL NOT WORK!!");
fprintf(logFile,"%s",message); fflush(logFile);
break;
};
} else {
break;
};
};
// Classify the correlation products:
if (is1[indices[0]]){is1[indices[0]]=false; conj = true;} else {is2[indices[0]]=false; conj=false;};
if (idx<4){
sprintf(message," CONJ: %i (%s %ld)\n",conj,convisok?"ok":"ERROR",currVis);
fprintf(logFile,"%s",message); fflush(logFile);
};
int i = conj?0:1;
antenna = conj?Records[indices[0]].Antennas[0]:Records[indices[0]].Antennas[1];
otherAnt = conj?Records[indices[0]].Antennas[1]:Records[indices[0]].Antennas[0];
char p1, p2;
currEntries[currFreq][0] = -1;
currEntries[currFreq][1] = -1;
currEntries[currFreq][2] = -1;
currEntries[currFreq][3] = -1;
for (rec = 0; rec < 4; rec++) {
if (indices[rec]>=0){
p1 = Records[indices[rec]].Pol[i];
p2 = Records[indices[rec]].Pol[1-i];
// All pol. products must have consistent booleans (for sanity)
is1[indices[rec]] = is1[indices[0]];
is2[indices[rec]] = is2[indices[0]];
if ((p1=='X' || p1=='R') && (p2=='R' || p2=='X')) {
currEntries[currFreq][0] = indices[rec];}
else if ((p1=='Y'||p1=='L') && (p2=='R' || p2=='X')) {
currEntries[currFreq][3] = indices[rec];}
else if ((p1=='X'||p1=='R') && (p2=='L' || p2=='Y')) {
currEntries[currFreq][2] = indices[rec];}
else if ((p1=='Y'||p1=='L') && (p2=='L' || p2=='Y')) {
currEntries[currFreq][1] = indices[rec];
};
};
};
// Get the data and return them:
for (i=0; i<4; i++) {
if (currEntries[currFreq][i]>=0){
rec = currEntries[currFreq][i];
fnum = Records[rec].fileNumber;
newdifx[fnum].seekg(Records[rec].byteIni, newdifx[fnum].beg);
newdifx[fnum].sync();
newdifx[fnum].read(reinterpret_cast<char*>(currentVis[i]),Records[rec].byteEnd-Records[rec].byteIni);
} else {
// nuke values that would have been overwritten by the missing data
for (k=0; k<Freqs[currFreq].Nchan; k++) {
currentVis[i][k] = (std::complex<float>)0;
};
};
};
// Case of auto-correlations (in the 2nd round of conversion):
// Recover the fringe after the 1st round (since sometimes the
// file is not flushed properly, so we need an "aux" variable):
// The auxVis values are captured at the end of applyMatrix
isAutoCorr = antenna == otherAnt;
if (complete) {
if (isAutoCorr || isTwoLinear){
for (k=0;k<Freqs[currFreq].Nchan; k++) {
currentVis[3][k] = auxVis[3][k];
currentVis[2][k] = auxVis[2][k];
currentVis[0][k] = auxVis[0][k];
currentVis[1][k] = auxVis[1][k];
};
};
};
if (isAutoCorr && !complete){
// 1st round of autocorrs. Zero the cross-terms (XY and YX):
for (k=0;k<Freqs[currFreq].Nchan; k++) {
currentVis[2][k] = 0.0;
currentVis[3][k] = 0.0;
};
};
/*
else if (isAutoCorr) {
for (k=0;k<Freqs[currFreq].Nchan; k++) {
currentVis[2][k] = 0.0;
currentVis[1][k] = 0.0;
};
};
*/
calField = field;
JDTime = time;
currConj = conj ;
if (debugNewIF) { // share information
sprintf(message, " source %d JDTime %lf RelTime %lf conj = %d\n",
field, time, time - Records[0].Time, conj);
fprintf(logFile,"%s",message); fflush(logFile);
debugNewIF = false;
};
return true;
};
int DataIOSWIN::getFileNumber(){
// printf("Entering FileNum: %i\n",currFreq);fflush(stdout);
long rec; int fnum;
int i;
for(i=0;i<4;i++){
rec = currEntries[currFreq][i];
if(rec>=0){break;};
};
// printf("REC: %ld\n",rec);fflush(stdout);
if(rec>=0){
fnum = Records[rec].fileNumber;
} else {fnum = 0;};
// printf("FNUM: %i\n",fnum);fflush(stdout);
return fnum;
};
bool DataIOSWIN::setCurrentMixedVis() {
long rec;
int i, k, l, fnum = 0;
if (isAutoCorr){
int TotMedianWindow = 2*AutoCorrMedianFilter+1;
float *auxMedian = new float[TotMedianWindow];
// 2nd round of autocorrs -> apply median filter.
if(AutoCorrMedianFilter>0 && AutoCorrMedianFilter<Freqs[currFreq].Nchan){
for (k=0;k<AutoCorrMedianFilter;k++){bufferVis[2][k] = 0.0; bufferVis[3][k]=0.0;};
for (k=Freqs[currFreq].Nchan-AutoCorrMedianFilter;k<Freqs[currFreq].Nchan;k++){bufferVis[2][k] = 0.0; bufferVis[3][k]=0.0;};
for (k=AutoCorrMedianFilter;k<Freqs[currFreq].Nchan-AutoCorrMedianFilter; k++) {
for(l=0;l<TotMedianWindow;l++){
auxMedian[l] = (std::abs(bufferVis[0][k-AutoCorrMedianFilter+l])+std::abs(bufferVis[1][k-AutoCorrMedianFilter+l]))/2.;
};
std::sort(auxMedian,auxMedian+TotMedianWindow);
bufferVis[0][k] = auxMedian[AutoCorrMedianFilter];
bufferVis[1][k] = bufferVis[0][k];
bufferVis[2][k] = 0.0; bufferVis[3][k]=0.0;
};
};
delete[] auxMedian;
};
// Write:
for (i=0; i<4; i++) {
if (currEntries[currFreq][i]>=0){
rec = currEntries[currFreq][i];
fnum = Records[rec].fileNumber;
newdifx[fnum].seekp(Records[rec].byteIni, newdifx[fnum].beg);
newdifx[fnum].write(reinterpret_cast<char*>(bufferVis[i]),Records[rec].byteEnd-Records[rec].byteIni);
newdifx[fnum].flush();
newdifx[fnum].clear();
};
};
return true;
};