| 1 | //#---------------------------------------------------------------------------
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| 2 | //# SDReader.cc: A class to read single dish spectra from SDFITS, RPFITS
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| 3 | //#---------------------------------------------------------------------------
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| 4 | //# Copyright (C) 2004
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| 5 | //# Malte Marquarding, ATNF
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| 6 | //#
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| 7 | //# This program is free software; you can redistribute it and/or modify it
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| 8 | //# under the terms of the GNU General Public License as published by the Free
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| 9 | //# Software Foundation; either version 2 of the License, or (at your option)
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| 10 | //# any later version.
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| 11 | //#
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| 12 | //# This program is distributed in the hope that it will be useful, but
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| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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| 15 | //# Public License for more details.
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| 16 | //#
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| 17 | //# You should have received a copy of the GNU General Public License along
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| 18 | //# with this program; if not, write to the Free Software Foundation, Inc.,
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| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
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| 20 | //#
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| 21 | //# Correspondence concerning this software should be addressed as follows:
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| 22 | //# Internet email: Malte.Marquarding@csiro.au
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| 23 | //# Postal address: Malte Marquarding,
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| 24 | //# Australia Telescope National Facility,
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| 25 | //# P.O. Box 76,
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| 26 | //# Epping, NSW, 2121,
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| 27 | //# AUSTRALIA
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| 28 | //#
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| 29 | //# $Id:
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| 30 | //#---------------------------------------------------------------------------
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| 31 | #include <atnf/PKSIO/PKSreader.h>
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| 32 | #include <aips/Quanta/MVTime.h>
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| 33 | #include "SDContainer.h"
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| 34 | #include "SDReader.h"
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| 35 |
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| 36 | using namespace atnf_sd;
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| 37 |
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| 38 | void SDHeader::print() const {
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| 39 | MVTime mvt(this->utc);
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| 40 |
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| 41 | cout << "Observer: " << this->observer << endl
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| 42 | << "Project: " << this->project << endl
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| 43 | << "Obstype: " << this->obstype << endl
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| 44 | << "Antenna: " << this->antennaname << endl
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| 45 | << "Ant. Position: " << this->antennaposition << endl
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| 46 | << "Equinox: " << this->equinox << endl
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| 47 | << "Freq. ref.: " << this->freqref << endl
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| 48 | << "Ref. frequency: " << this->reffreq << endl
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| 49 | << "Bandwidth: " << this->bandwidth << endl
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| 50 | << "Time (utc): "
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| 51 | << mvt.string()
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| 52 | << endl;
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| 53 | //setprecision(10) << this->utc << endl;
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| 54 | }
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| 55 |
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| 56 |
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| 57 | SDReader::SDReader() :
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| 58 | reader_(0),
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| 59 | table_(new SDMemTable()) {
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| 60 | cursor_ = 0;
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| 61 | timestamp_ = 0;
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| 62 | }
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| 63 |
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| 64 | SDReader::SDReader(CountedPtr<SDMemTable> tbl) :
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| 65 | reader_(0),
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| 66 | table_(tbl) {
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| 67 | cursor_ = 0;
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| 68 | timestamp_ = 0;
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| 69 | }
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| 70 |
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| 71 | SDReader::~SDReader() {
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| 72 | delete reader_;reader_ =0;
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| 73 | }
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| 74 |
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| 75 | void SDReader::reset() {
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| 76 | cursor_ = 0;
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| 77 | timestamp_ = 0;
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| 78 | open(filename_);
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| 79 | }
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| 80 |
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| 81 | void SDReader::open(const std::string& filename) {
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| 82 | if (reader_) delete reader_; reader_ = 0;
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| 83 | Bool haveBase, haveSpectra, haveXPol;
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| 84 | //Int nChan, nIF, nPol;
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| 85 | String inName(filename);
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| 86 | String format;
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| 87 | Vector<Bool> beams;
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| 88 | if ((reader_ = getPKSreader(inName, 0, False, format, beams, nIF_,
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| 89 | nChan_, nPol_, haveBase, haveSpectra,
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| 90 | haveXPol)) == 0) {
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| 91 | cerr << "PKSreader failed" << endl;
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| 92 | }
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| 93 | if (!haveSpectra) {
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| 94 | delete reader_;
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| 95 | reader_ = 0;
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| 96 | cerr << "Spectral data absent." << endl;
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| 97 | return;
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| 98 | }
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| 99 | nBeam_ = beams.nelements();
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| 100 | cout << "Reading " + format + " format from " + inName << endl;
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| 101 | cout << "nChannels = " << nChan_ << ", " << "nPol = " << nPol_ << endl
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| 102 | << "nIF = " << nIF_ << endl
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| 103 | << "nBeams = " << nBeam_ << endl;
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| 104 |
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| 105 | // Get basic parameters.
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| 106 | header_ = SDHeader();
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| 107 | header_.nchan = nChan_;
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| 108 | header_.npol = nPol_;
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| 109 | header_.nbeam = nBeam_;
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| 110 |
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| 111 | //cerr << " getting header ..." << endl;
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| 112 | Int status = reader_->getHeader(header_.observer, header_.project,
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| 113 | header_.antennaname, header_.antennaposition,
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| 114 | header_.obstype,header_.equinox,
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| 115 | header_.freqref,
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| 116 | header_.utc, header_.reffreq,
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| 117 | header_.bandwidth);
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| 118 | if (status) {
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| 119 | delete reader_;
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| 120 | reader_ = 0;
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| 121 | cerr << "Failed to get data description." << endl;
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| 122 | return;
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| 123 | }
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| 124 | header_.print();
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| 125 | if ((header_.obstype).matches("*SW*")) {
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| 126 | // need robust way here - probably read ahead of next timestamp
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| 127 | cout << "Header indicates frequency switched observation.\n"
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| 128 | "setting # of IFs = 1 " << endl;
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| 129 | nIF_ = 1;
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| 130 | }
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| 131 | header_.nif = nIF_;
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| 132 | // Apply selection criteria.
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| 133 | cerr << "applying selection criteria..." << endl;
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| 134 | Vector<Int> start(nIF_, 1);
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| 135 | Vector<Int> end(nIF_, 0);
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| 136 | Vector<Int> ref;
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| 137 | Vector<Bool> beamSel(nBeam_,True);
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| 138 | Vector<Bool> IFsel(nIF_,True);
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| 139 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol);
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| 140 | cerr << "open finished" << endl;
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| 141 | }
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| 142 |
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| 143 | int SDReader::read(const std::vector<int>& seq) {
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| 144 | cerr << "SDReader::read" << endl;
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| 145 | int status = 0;
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| 146 |
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| 147 | Int beamNo, IFno, refBeam, scanNo, cycleNo;
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| 148 | Float azimuth, elevation, focusAxi, focusRot, focusTan,
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| 149 | humidity, parAngle, pressure, temperature, windAz, windSpeed;
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| 150 | Double bandwidth, freqInc, interval, mjd, refFreq, srcVel;
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| 151 | String fieldName, srcName, tcalTime;
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| 152 | Vector<Float> calFctr, sigma, tcal, tsys;
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| 153 | Matrix<Float> baseLin, baseSub;
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| 154 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2);
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| 155 | Matrix<Float> spectra;
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| 156 | Matrix<uChar> flagtra;
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| 157 | Complex xCalFctr;
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| 158 | Vector<Complex> xPol;
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| 159 | mjd = 0;
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| 160 | uInt n = seq.size();
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| 161 | cerr << header_.nif << ", " << header_.nbeam << endl;
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| 162 | uInt stepsize = header_.nif*header_.nbeam;
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| 163 | cerr << "SDReader stepsize = " << stepsize << endl;
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| 164 | uInt scanid = 0;
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| 165 | String prevName = "_noname_";// temporary until scanid is present
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| 166 | uInt seqi = 0;
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| 167 | //SDFrequencyTable sdft();
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| 168 | Bool getAll = False;
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| 169 | if (seq[n-1] == -1) getAll = True;
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| 170 | while ( (cursor_ <= seq[n-1]) || getAll) {
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| 171 | // only needs to be create if in seq
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| 172 | SDContainer sc(header_.nbeam,header_.nif,header_.npol,header_.nchan);
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| 173 |
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| 174 | // iterate over one correlator integration cycle = nBeam*nIF
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| 175 | for (uInt row=0; row < stepsize; row++) {
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| 176 | // add scanid from GROUP field -- this will remove the need for
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| 177 | // stepsize as well
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| 178 | // spectra(nChan,nPol)!!!
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| 179 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName,
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| 180 | srcName,
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| 181 | srcDir, srcPM, srcVel, IFno, refFreq,
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| 182 | bandwidth, freqInc, tcal, tcalTime,
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| 183 | azimuth, elevation, parAngle, focusAxi,
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| 184 | focusTan, focusRot, temperature, pressure,
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| 185 | humidity, windSpeed, windAz, refBeam,
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| 186 | beamNo, direction, scanRate,
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| 187 | tsys, sigma, calFctr, baseLin, baseSub,
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| 188 | spectra, flagtra, xCalFctr, xPol);
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| 189 | if (status) {
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| 190 | if (status == -1) {
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| 191 | // EOF.
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| 192 | if (row < stepsize-1) cerr << "incomplete integration data." << endl;
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| 193 | cerr << "EOF" << endl;
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| 194 | return status;
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| 195 | }
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| 196 | }
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| 197 | // if in the given list
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| 198 | if (cursor_ == seq[seqi]) {
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| 199 | // add integration cycle
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| 200 | if (row==0) {
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| 201 | //add invariant info: scanNo, mjd, interval, fieldName,
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| 202 | //srcName, azimuth, elevation, parAngle, focusAxi, focusTan,
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| 203 | //focusRot, temperature, pressure, humidity, windSpeed,
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| 204 | //windAz srcDir, srcPM, srcVel
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| 205 | sc.timestamp = mjd;
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| 206 | sc.interval = interval;
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| 207 | sc.sourcename = srcName;
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| 208 | }
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| 209 | // add specific info
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| 210 | // IFno beamNo are 1-relative
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| 211 | // refPix = nChan/2+1 in Integer arith.!
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| 212 | //uInt refPix = header_.nchan/2+1;
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| 213 | //uInt frqslot = sdft.addFrequency(refPix, refFreq, freqInc);
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| 214 |
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| 215 | //if ( srcName != prevName ) {//temp
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| 216 | //scanid++;//temp
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| 217 | // prevName = srcName;//temp
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| 218 | //}//temp
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| 219 | sc.scanid = scanNo;
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| 220 | //sc.setFrequencyMap(frqslot,IFno-1);
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| 221 | sc.setSpectrum(spectra, beamNo-1, IFno-1);
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| 222 | sc.setFlags(flagtra, beamNo-1, IFno-1);
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| 223 | sc.setTsys(tsys, beamNo-1, IFno-1);
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| 224 | //sc.addPointing(direction, beamNo-1);
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| 225 | }
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| 226 | }
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| 227 | if (cursor_ == seq[seqi]) {
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| 228 | // insert container into table/list
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| 229 | table_->putSDContainer(sc);
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| 230 | seqi++;// next in list
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| 231 | }
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| 232 | cursor_++;// increment position in file
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| 233 | }
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| 234 | return status;
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| 235 | }
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