| 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 | |
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| 33 | #include "SDReader.h" |
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| 34 | |
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| 35 | using namespace atnf_sd; |
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| 36 | |
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| 37 | SDReader::SDReader() : |
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| 38 | reader_(0), |
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| 39 | table_(new SDMemTable()) { |
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| 40 | cursor_ = 0; |
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| 41 | timestamp_ = 0; |
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| 42 | } |
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| 43 | |
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| 44 | SDReader::SDReader(CountedPtr<SDMemTable> tbl) : |
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| 45 | reader_(0), |
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| 46 | table_(tbl) { |
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| 47 | cursor_ = 0; |
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| 48 | timestamp_ = 0; |
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| 49 | } |
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| 50 | |
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| 51 | SDReader::~SDReader() { |
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| 52 | delete reader_;reader_ =0; |
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| 53 | } |
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| 54 | |
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| 55 | void SDReader::reset() { |
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| 56 | cursor_ = 0; |
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| 57 | timestamp_ = 0; |
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| 58 | open(filename_); |
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| 59 | } |
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| 60 | |
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| 61 | void SDReader::open(const std::string& filename) { |
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| 62 | if (reader_) delete reader_; reader_ = 0; |
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| 63 | Bool haveBase, haveSpectra, haveXPol; |
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| 64 | String inName(filename); |
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| 65 | String format; |
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| 66 | Vector<Bool> beams; |
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| 67 | if ((reader_ = getPKSreader(inName, 0, False, format, beams, nIF_, |
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| 68 | nChan_, nPol_, haveBase, haveSpectra, |
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| 69 | haveXPol)) == 0) { |
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| 70 | cerr << "PKSreader failed" << endl; |
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| 71 | } |
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| 72 | if (!haveSpectra) { |
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| 73 | delete reader_; |
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| 74 | reader_ = 0; |
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| 75 | cerr << "Spectral data absent." << endl; |
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| 76 | return; |
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| 77 | } |
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| 78 | nBeam_ = beams.nelements(); |
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| 79 | // Get basic parameters. |
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| 80 | header_ = SDHeader(); |
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| 81 | header_.nchan = nChan_; |
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| 82 | header_.npol = nPol_; |
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| 83 | header_.nbeam = nBeam_; |
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| 84 | |
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| 85 | Int status = reader_->getHeader(header_.observer, header_.project, |
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| 86 | header_.antennaname, header_.antennaposition, |
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| 87 | header_.obstype,header_.equinox, |
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| 88 | header_.freqref, |
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| 89 | header_.utc, header_.reffreq, |
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| 90 | header_.bandwidth); |
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| 91 | if (status) { |
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| 92 | delete reader_; |
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| 93 | reader_ = 0; |
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| 94 | cerr << "Failed to get data description." << endl; |
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| 95 | return; |
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| 96 | } |
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| 97 | header_.print(); |
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| 98 | if ((header_.obstype).matches("*SW*")) { |
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| 99 | // need robust way here - probably read ahead of next timestamp |
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| 100 | cout << "Header indicates frequency switched observation.\n" |
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| 101 | "setting # of IFs = 1 " << endl; |
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| 102 | nIF_ = 1; |
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| 103 | } |
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| 104 | header_.nif = nIF_; |
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| 105 | // Apply selection criteria. |
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| 106 | Vector<Int> start(nIF_, 1); |
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| 107 | Vector<Int> end(nIF_, 0); |
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| 108 | Vector<Int> ref; |
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| 109 | Vector<Bool> beamSel(nBeam_,True); |
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| 110 | Vector<Bool> IFsel(nIF_,True); |
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| 111 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol); |
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| 112 | table_->putSDHeader(header_); |
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| 113 | frequencies_.setRefFrame(header_.freqref); |
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| 114 | frequencies_.setEquinox(header_.equinox); |
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| 115 | } |
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| 116 | |
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| 117 | int SDReader::read(const std::vector<int>& seq) { |
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| 118 | int status = 0; |
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| 119 | |
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| 120 | Int beamNo, IFno, refBeam, scanNo, cycleNo; |
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| 121 | Float azimuth, elevation, focusAxi, focusRot, focusTan, |
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| 122 | humidity, parAngle, pressure, temperature, windAz, windSpeed; |
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| 123 | Double bandwidth, freqInc, interval, mjd, refFreq, srcVel; |
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| 124 | String fieldName, srcName, tcalTime; |
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| 125 | Vector<Float> calFctr, sigma, tcal, tsys; |
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| 126 | Matrix<Float> baseLin, baseSub; |
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| 127 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2); |
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| 128 | Matrix<Float> spectra; |
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| 129 | Matrix<uChar> flagtra; |
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| 130 | Complex xCalFctr; |
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| 131 | Vector<Complex> xPol; |
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| 132 | uInt n = seq.size(); |
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| 133 | |
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| 134 | uInt stepsize = header_.nif*header_.nbeam; |
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| 135 | //cerr << "SDReader stepsize = " << stepsize << endl; |
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| 136 | uInt seqi = 0; |
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| 137 | Bool getAll = False; |
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| 138 | if (seq[n-1] == -1) getAll = True; |
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| 139 | while ( (cursor_ <= seq[n-1]) || getAll) { |
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| 140 | // only needs to be create if in seq |
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| 141 | SDContainer sc(header_.nbeam,header_.nif,header_.npol,header_.nchan); |
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| 142 | |
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| 143 | // iterate over one correlator integration cycle = nBeam*nIF |
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| 144 | for (uInt row=0; row < stepsize; row++) { |
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| 145 | // stepsize as well |
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| 146 | // spectra(nChan,nPol)!!! |
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| 147 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName, |
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| 148 | srcName, |
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| 149 | srcDir, srcPM, srcVel, IFno, refFreq, |
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| 150 | bandwidth, freqInc, tcal, tcalTime, |
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| 151 | azimuth, elevation, parAngle, focusAxi, |
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| 152 | focusTan, focusRot, temperature, pressure, |
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| 153 | humidity, windSpeed, windAz, refBeam, |
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| 154 | beamNo, direction, scanRate, |
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| 155 | tsys, sigma, calFctr, baseLin, baseSub, |
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| 156 | spectra, flagtra, xCalFctr, xPol); |
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| 157 | if (status) { |
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| 158 | if (status == -1) { |
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| 159 | // EOF. |
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| 160 | if (row < stepsize-1) cerr << "incomplete integration data." << endl; |
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| 161 | cerr << "EOF" << endl; |
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| 162 | table_->putSDFreqTable(frequencies_); |
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| 163 | return status; |
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| 164 | } |
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| 165 | } |
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| 166 | // if in the given list |
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| 167 | if (cursor_ == seq[seqi] || getAll) { |
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| 168 | // add integration cycle |
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| 169 | if (row==0) { |
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| 170 | //add invariant info: scanNo, mjd, interval, fieldName, |
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| 171 | //srcName, azimuth, elevation, parAngle, focusAxi, focusTan, |
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| 172 | //focusRot, temperature, pressure, humidity, windSpeed, |
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| 173 | //windAz srcDir, srcPM, srcVel |
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| 174 | sc.timestamp = mjd; |
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| 175 | sc.interval = interval; |
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| 176 | sc.sourcename = srcName; |
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| 177 | } |
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| 178 | // add specific info |
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| 179 | // IFno beamNo are 1-relative |
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| 180 | // refPix = nChan/2+1 in Integer arith.! |
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| 181 | Int refPix = header_.nchan/2+1; |
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| 182 | Int frqslot = frequencies_.addFrequency(refPix, refFreq, freqInc); |
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| 183 | sc.setFrequencyMap(frqslot,IFno-1); |
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| 184 | |
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| 185 | sc.scanid = scanNo; |
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| 186 | sc.setSpectrum(spectra, beamNo-1, IFno-1); |
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| 187 | sc.setFlags(flagtra, beamNo-1, IFno-1); |
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| 188 | sc.setTsys(tsys, beamNo-1, IFno-1); |
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| 189 | //sc.addPointing(direction, beamNo-1); |
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| 190 | } |
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| 191 | } |
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| 192 | if (cursor_ == seq[seqi] || getAll) { |
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| 193 | // insert container into table/list |
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| 194 | table_->putSDContainer(sc); |
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| 195 | seqi++;// next in list |
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| 196 | } |
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| 197 | cursor_++;// increment position in file |
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| 198 | } |
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| 199 | table_->putSDFreqTable(frequencies_); |
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| 200 | return status; |
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| 201 | } |
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