| 1 | //#---------------------------------------------------------------------------
|
|---|
| 2 | //# SDReader.cc: A class to read single dish spectra from SDFITS, RPFITS
|
|---|
| 3 | //#---------------------------------------------------------------------------
|
|---|
| 4 | //# Copyright (C) 2004
|
|---|
| 5 | //# ATNF
|
|---|
| 6 | //#
|
|---|
| 7 | //# This program is free software; you can redistribute it and/or modify it
|
|---|
| 8 | //# under the terms of the GNU General Public License as published by the Free
|
|---|
| 9 | //# Software Foundation; either version 2 of the License, or (at your option)
|
|---|
| 10 | //# any later version.
|
|---|
| 11 | //#
|
|---|
| 12 | //# This program is distributed in the hope that it will be useful, but
|
|---|
| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|---|
| 15 | //# Public License for more details.
|
|---|
| 16 | //#
|
|---|
| 17 | //# You should have received a copy of the GNU General Public License along
|
|---|
| 18 | //# with this program; if not, write to the Free Software Foundation, Inc.,
|
|---|
| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
|
|---|
| 20 | //#
|
|---|
| 21 | //# Correspondence concerning this software should be addressed as follows:
|
|---|
| 22 | //# Internet email: Malte.Marquarding@csiro.au
|
|---|
| 23 | //# Postal address: Malte Marquarding,
|
|---|
| 24 | //# Australia Telescope National Facility,
|
|---|
| 25 | //# P.O. Box 76,
|
|---|
| 26 | //# Epping, NSW, 2121,
|
|---|
| 27 | //# AUSTRALIA
|
|---|
| 28 | //#
|
|---|
| 29 | //# $Id:
|
|---|
| 30 | //#---------------------------------------------------------------------------
|
|---|
| 31 | #include <casa/Exceptions.h>
|
|---|
| 32 | #include <atnf/PKSIO/PKSreader.h>
|
|---|
| 33 |
|
|---|
| 34 | #include "SDReader.h"
|
|---|
| 35 |
|
|---|
| 36 | using namespace casa;
|
|---|
| 37 | using namespace asap;
|
|---|
| 38 |
|
|---|
| 39 | SDReader::SDReader() :
|
|---|
| 40 | reader_(0),
|
|---|
| 41 | table_(new SDMemTable()) {
|
|---|
| 42 | cursor_ = 0;
|
|---|
| 43 | }
|
|---|
| 44 | SDReader::SDReader(const std::string& filename) :
|
|---|
| 45 | reader_(0),
|
|---|
| 46 | table_(new SDMemTable()) {
|
|---|
| 47 | cursor_ = 0;
|
|---|
| 48 | open(filename);
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 | SDReader::SDReader(CountedPtr<SDMemTable> tbl) :
|
|---|
| 52 | reader_(0),
|
|---|
| 53 | table_(tbl) {
|
|---|
| 54 | cursor_ = 0;
|
|---|
| 55 | }
|
|---|
| 56 |
|
|---|
| 57 | SDReader::~SDReader() {
|
|---|
| 58 | if (reader_) delete reader_; reader_ = 0;
|
|---|
| 59 | }
|
|---|
| 60 |
|
|---|
| 61 | void SDReader::reset() {
|
|---|
| 62 | cursor_ = 0;
|
|---|
| 63 | table_ = new SDMemTable();
|
|---|
| 64 | if (reader_) delete reader_; reader_ = 0;
|
|---|
| 65 | // re-create the reader
|
|---|
| 66 | Bool haveBase, haveSpectra, haveXPol;
|
|---|
| 67 | String format;
|
|---|
| 68 | Vector<Bool> beams;
|
|---|
| 69 | if ((reader_ = getPKSreader(filename_, 0, False, format, beams, nIF_,
|
|---|
| 70 | nChan_, nPol_, haveBase, haveSpectra,
|
|---|
| 71 | haveXPol)) == 0) {
|
|---|
| 72 | throw(AipsError("PKSreader failed"));
|
|---|
| 73 | }
|
|---|
| 74 | // re-enter the header
|
|---|
| 75 | table_->putSDHeader(header_);
|
|---|
| 76 | }
|
|---|
| 77 |
|
|---|
| 78 | void SDReader::close() {
|
|---|
| 79 | cerr << "disabled" << endl;
|
|---|
| 80 | }
|
|---|
| 81 |
|
|---|
| 82 | void SDReader::open(const std::string& filename) {
|
|---|
| 83 | if (reader_) delete reader_; reader_ = 0;
|
|---|
| 84 | Bool haveBase, haveSpectra, haveXPol;
|
|---|
| 85 | String inName(filename);
|
|---|
| 86 | filename_ = inName;
|
|---|
| 87 | String format;
|
|---|
| 88 | Vector<Bool> beams;
|
|---|
| 89 | if ((reader_ = getPKSreader(inName, 0, False, format, beams, nIF_,
|
|---|
| 90 | nChan_, nPol_, haveBase, haveSpectra,
|
|---|
| 91 | haveXPol)) == 0) {
|
|---|
| 92 | throw(AipsError("PKSreader failed"));
|
|---|
| 93 | }
|
|---|
| 94 | if (!haveSpectra) {
|
|---|
| 95 | delete reader_;
|
|---|
| 96 | reader_ = 0;
|
|---|
| 97 | throw(AipsError("No spectral data in file."));
|
|---|
| 98 | return;
|
|---|
| 99 | }
|
|---|
| 100 | nBeam_ = beams.nelements();
|
|---|
| 101 | // Get basic parameters.
|
|---|
| 102 | if (haveXPol) {
|
|---|
| 103 | cout << "Warning. Ignoring cross polarisation." << endl;
|
|---|
| 104 | nPol_--;
|
|---|
| 105 | }
|
|---|
| 106 | header_ = SDHeader();
|
|---|
| 107 | header_.nchan = nChan_;
|
|---|
| 108 | header_.npol = nPol_;
|
|---|
| 109 | header_.nbeam = nBeam_;
|
|---|
| 110 | Int status = reader_->getHeader(header_.observer, header_.project,
|
|---|
| 111 | header_.antennaname, header_.antennaposition,
|
|---|
| 112 | header_.obstype,header_.equinox,
|
|---|
| 113 | header_.freqref,
|
|---|
| 114 | header_.utc, header_.reffreq,
|
|---|
| 115 | header_.bandwidth);
|
|---|
| 116 | if (status) {
|
|---|
| 117 | delete reader_;
|
|---|
| 118 | reader_ = 0;
|
|---|
| 119 | throw(AipsError("Failed to get header."));
|
|---|
| 120 | return;
|
|---|
| 121 | }
|
|---|
| 122 | if ((header_.obstype).matches("*SW*")) {
|
|---|
| 123 | // need robust way here - probably read ahead of next timestamp
|
|---|
| 124 | cout << "Header indicates frequency switched observation.\n"
|
|---|
| 125 | "setting # of IFs = 1 " << endl;
|
|---|
| 126 | nIF_ = 1;
|
|---|
| 127 | }
|
|---|
| 128 | header_.nif = nIF_;
|
|---|
| 129 | // Apply selection criteria.
|
|---|
| 130 | Vector<Int> start(nIF_, 1);
|
|---|
| 131 | Vector<Int> end(nIF_, 0);
|
|---|
| 132 | Vector<Int> ref;
|
|---|
| 133 | Vector<Bool> beamSel(nBeam_,True);
|
|---|
| 134 | Vector<Bool> IFsel(nIF_,True);
|
|---|
| 135 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol);
|
|---|
| 136 | table_->putSDHeader(header_);
|
|---|
| 137 | frequencies_.setRefFrame(header_.freqref);
|
|---|
| 138 | frequencies_.setEquinox(header_.equinox);
|
|---|
| 139 | }
|
|---|
| 140 |
|
|---|
| 141 | int SDReader::read(const std::vector<int>& seq) {
|
|---|
| 142 | int status = 0;
|
|---|
| 143 |
|
|---|
| 144 | Int beamNo, IFno, refBeam, scanNo, cycleNo;
|
|---|
| 145 | Float azimuth, elevation, focusAxi, focusRot, focusTan,
|
|---|
| 146 | humidity, parAngle, pressure, temperature, windAz, windSpeed;
|
|---|
| 147 | Double bandwidth, freqInc, interval, mjd, refFreq, restFreq, srcVel;
|
|---|
| 148 | String fieldName, srcName, tcalTime;
|
|---|
| 149 | Vector<Float> calFctr, sigma, tcal, tsys;
|
|---|
| 150 | Matrix<Float> baseLin, baseSub;
|
|---|
| 151 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2);
|
|---|
| 152 | Matrix<Float> spectra;
|
|---|
| 153 | Matrix<uChar> flagtra;
|
|---|
| 154 | Complex xCalFctr;
|
|---|
| 155 | Vector<Complex> xPol;
|
|---|
| 156 | uInt n = seq.size();
|
|---|
| 157 |
|
|---|
| 158 | uInt stepsize = header_.nif*header_.nbeam;
|
|---|
| 159 | //cerr << "SDReader stepsize = " << stepsize << endl;
|
|---|
| 160 | uInt seqi = 0;
|
|---|
| 161 | Bool getAll = False;
|
|---|
| 162 | if (seq[n-1] == -1) getAll = True;
|
|---|
| 163 | while ( (cursor_ <= seq[n-1]) || getAll) {
|
|---|
| 164 | // only needs to be create if in seq
|
|---|
| 165 | SDContainer sc(header_.nbeam,header_.nif,header_.npol,header_.nchan);
|
|---|
| 166 |
|
|---|
| 167 | // iterate over one correlator integration cycle = nBeam*nIF
|
|---|
| 168 | for (uInt row=0; row < stepsize; row++) {
|
|---|
| 169 | // stepsize as well
|
|---|
| 170 | // spectra(nChan,nPol)!!!
|
|---|
| 171 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName,
|
|---|
| 172 | srcName, srcDir, srcPM, srcVel, IFno, refFreq,
|
|---|
| 173 | bandwidth, freqInc, restFreq, tcal, tcalTime,
|
|---|
| 174 | azimuth, elevation, parAngle, focusAxi,
|
|---|
| 175 | focusTan, focusRot, temperature, pressure,
|
|---|
| 176 | humidity, windSpeed, windAz, refBeam,
|
|---|
| 177 | beamNo, direction, scanRate,
|
|---|
| 178 | tsys, sigma, calFctr, baseLin, baseSub,
|
|---|
| 179 | spectra, flagtra, xCalFctr, xPol);
|
|---|
| 180 | if (status) {
|
|---|
| 181 | if (status == -1) {
|
|---|
| 182 | // EOF.
|
|---|
| 183 | if (row < stepsize-1) cerr << "incomplete scan data.\n Probably means not all Beams/IFs/Pols within a scan a present." << endl;
|
|---|
| 184 | //cerr << "EOF" << endl;
|
|---|
| 185 | table_->putSDFreqTable(frequencies_);
|
|---|
| 186 | return status;
|
|---|
| 187 | }
|
|---|
| 188 | }
|
|---|
| 189 | // if in the given list
|
|---|
| 190 | if (cursor_ == seq[seqi] || getAll) {
|
|---|
| 191 | // add integration cycle
|
|---|
| 192 | if (row==0) {
|
|---|
| 193 | //add invariant info: scanNo, mjd, interval, fieldName,
|
|---|
| 194 | //srcName, azimuth, elevation, parAngle, focusAxi, focusTan,
|
|---|
| 195 | //focusRot, temperature, pressure, humidity, windSpeed,
|
|---|
| 196 | //windAz srcDir, srcPM, srcVel
|
|---|
| 197 | sc.timestamp = mjd;
|
|---|
| 198 | sc.interval = interval;
|
|---|
| 199 | sc.sourcename = srcName;
|
|---|
| 200 | sc.fieldname = fieldName;
|
|---|
| 201 | sc.azimuth = azimuth;
|
|---|
| 202 | sc.elevation = elevation;
|
|---|
| 203 | }
|
|---|
| 204 | // add specific info
|
|---|
| 205 | // IFno beamNo are 1-relative
|
|---|
| 206 | // refPix = nChan/2+1 in Integer arith.!
|
|---|
| 207 | Int refPix = header_.nchan/2+1;
|
|---|
| 208 | Int frqslot = frequencies_.addFrequency(refPix, refFreq, freqInc);
|
|---|
| 209 | sc.setFrequencyMap(frqslot,IFno-1);
|
|---|
| 210 | sc.tcal[0] = tcal[0];sc.tcal[1] = tcal[1];
|
|---|
| 211 | sc.tcaltime = tcalTime;
|
|---|
| 212 | sc.parangle = parAngle;
|
|---|
| 213 | sc.refbeam = refBeam;
|
|---|
| 214 | sc.scanid = scanNo-1;//make it 0-based
|
|---|
| 215 | sc.setSpectrum(spectra, beamNo-1, IFno-1);
|
|---|
| 216 | sc.setFlags(flagtra, beamNo-1, IFno-1);
|
|---|
| 217 | sc.setTsys(tsys, beamNo-1, IFno-1);
|
|---|
| 218 | sc.setDirection(direction, beamNo-1);
|
|---|
| 219 | }
|
|---|
| 220 | }
|
|---|
| 221 | if (cursor_ == seq[seqi] || getAll) {
|
|---|
| 222 | // insert container into table/list
|
|---|
| 223 | table_->putSDContainer(sc);
|
|---|
| 224 | seqi++;// next in list
|
|---|
| 225 | }
|
|---|
| 226 | cursor_++;// increment position in file
|
|---|
| 227 | }
|
|---|
| 228 | table_->putSDFreqTable(frequencies_);
|
|---|
| 229 | return status;
|
|---|
| 230 | }
|
|---|
