| 1 | //
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| 2 | // C++ Implementation: STFiller
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| 3 | //
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| 4 | // Description:
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| 5 | //
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| 6 | //
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| 7 | // Author: Malte Marquarding <asap@atnf.csiro.au>, (C) 2006
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| 8 | //
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| 9 | // Copyright: See COPYING file that comes with this distribution
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| 10 | //
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| 11 | //
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| 12 | #include <casa/iostream.h>
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| 13 | #include <casa/iomanip.h>
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| 14 |
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| 15 | #include <casa/Exceptions.h>
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| 16 | #include <casa/OS/Path.h>
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| 17 | #include <casa/OS/File.h>
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| 18 | #include <casa/Quanta/Unit.h>
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| 19 | #include <casa/Arrays/ArrayMath.h>
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| 20 | #include <casa/Utilities/Regex.h>
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| 21 |
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| 22 | #include <casa/Containers/RecordField.h>
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| 23 |
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| 24 | #include <tables/Tables/TableRow.h>
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| 25 |
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| 26 | #include <atnf/PKSIO/PKSreader.h>
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| 27 |
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| 28 | #include "STDefs.h"
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| 29 | #include "SDAttr.h"
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| 30 |
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| 31 | #include "STFiller.h"
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| 32 |
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| 33 | using namespace casa;
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| 34 |
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| 35 | namespace asap {
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| 36 |
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| 37 | STFiller::STFiller() :
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| 38 | reader_(0),
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| 39 | header_(0),
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| 40 | table_(0)
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| 41 | {
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| 42 | }
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| 43 |
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| 44 | STFiller::STFiller( CountedPtr< Scantable > stbl ) :
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| 45 | reader_(0),
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| 46 | header_(0),
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| 47 | table_(stbl)
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| 48 | {
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| 49 | }
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| 50 |
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| 51 | STFiller::STFiller(const std::string & filename,
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| 52 | int whichIF, int whichBeam ) :
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| 53 | reader_(0),
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| 54 | header_(0),
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| 55 | table_(0)
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| 56 | {
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| 57 | open(filename, whichIF, whichBeam);
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| 58 | }
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| 59 |
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| 60 | STFiller::~STFiller()
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| 61 | {
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| 62 | close();
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| 63 | }
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| 64 |
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| 65 | void STFiller::open( const std::string & filename,
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| 66 | int whichIF, int whichBeam )
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| 67 | {
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| 68 | if (table_.null()) table_ = new Scantable();
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| 69 | if (reader_) { delete reader_; reader_ = 0; }
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| 70 | Bool haveBase, haveSpectra;
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| 71 |
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| 72 | String inName(filename);
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| 73 | Path path(inName);
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| 74 | inName = path.expandedName();
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| 75 |
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| 76 | File file(inName);
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| 77 | if ( !file.exists() ) {
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| 78 | throw(AipsError("File does not exist"));
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| 79 | }
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| 80 | filename_ = inName;
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| 81 |
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| 82 | // Create reader and fill in values for arguments
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| 83 | String format;
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| 84 | Vector<Bool> beams;
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| 85 | if ( (reader_ = getPKSreader(inName, 0, 0, format, beams, nIF_,
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| 86 | nChan_, nPol_, haveBase, haveSpectra,
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| 87 | haveXPol_)) == 0 ) {
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| 88 | throw(AipsError("Creation of PKSreader failed"));
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| 89 | }
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| 90 | if (!haveSpectra) {
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| 91 | delete reader_;
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| 92 | reader_ = 0;
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| 93 | throw(AipsError("No spectral data in file."));
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| 94 | return;
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| 95 | }
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| 96 |
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| 97 | nBeam_ = beams.nelements();
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| 98 | // Get basic parameters.
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| 99 | if ( haveXPol_ ) {
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| 100 | pushLog("Cross polarization present");
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| 101 | nPol_ += 2; // Convert Complex -> 2 Floats
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| 102 | }
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| 103 |
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| 104 | if (header_) delete header_;
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| 105 | header_ = new SDHeader();
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| 106 | header_->nchan = nChan_;
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| 107 | header_->npol = nPol_;
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| 108 | header_->nbeam = nBeam_;
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| 109 |
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| 110 | Int status = reader_->getHeader(header_->observer, header_->project,
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| 111 | header_->antennaname, header_->antennaposition,
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| 112 | header_->obstype,header_->equinox,
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| 113 | header_->freqref,
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| 114 | header_->utc, header_->reffreq,
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| 115 | header_->bandwidth);
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| 116 |
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| 117 | if (status) {
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| 118 | delete reader_;
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| 119 | reader_ = 0;
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| 120 | delete header_;
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| 121 | header_ = 0;
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| 122 | throw(AipsError("Failed to get header."));
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| 123 | }
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| 124 | if ((header_->obstype).matches("*SW*")) {
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| 125 | // need robust way here - probably read ahead of next timestamp
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| 126 | pushLog("Header indicates frequency switched observation.\n"
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| 127 | "setting # of IFs = 1 ");
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| 128 | nIF_ = 1;
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| 129 | header_->obstype = String("fswitch");
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| 130 | }
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| 131 |
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| 132 | // Determine Telescope and set brightness unit
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| 133 |
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| 134 | Bool throwIt = False;
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| 135 | Instrument inst = SDAttr::convertInstrument(header_->antennaname, throwIt);
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| 136 | header_->fluxunit = "Jy";
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| 137 | if (inst==ATMOPRA || inst==TIDBINBILLA) {
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| 138 | header_->fluxunit = "K";
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| 139 | }
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| 140 |
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| 141 | header_->nif = nIF_;
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| 142 | header_->epoch = "UTC";
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| 143 | // *** header_->frequnit = "Hz"
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| 144 | // Apply selection criteria.
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| 145 |
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| 146 | Vector<Int> ref;
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| 147 | Vector<Bool> beamSel(nBeam_,True);
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| 148 | Vector<Bool> IFsel(nIF_,True);
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| 149 |
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| 150 | ifOffset_ = 0;
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| 151 | if (whichIF>=0) {
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| 152 | if (whichIF>=0 && whichIF<nIF_) {
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| 153 | IFsel = False;
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| 154 | IFsel(whichIF) = True;
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| 155 | header_->nif = 1;
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| 156 | nIF_ = 1;
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| 157 | ifOffset_ = whichIF;
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| 158 | } else {
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| 159 | delete reader_;
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| 160 | reader_ = 0;
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| 161 | delete header_;
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| 162 | header_ = 0;
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| 163 | throw(AipsError("Illegal IF selection"));
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| 164 | }
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| 165 | }
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| 166 |
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| 167 | beamOffset_ = 0;
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| 168 | if (whichBeam>=0) {
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| 169 | if (whichBeam>=0 && whichBeam<nBeam_) {
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| 170 | beamSel = False;
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| 171 | beamSel(whichBeam) = True;
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| 172 | header_->nbeam = 1;
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| 173 | nBeam_ = 1;
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| 174 | beamOffset_ = whichBeam;
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| 175 | } else {
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| 176 | delete reader_;
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| 177 | reader_ = 0;
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| 178 | delete header_;
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| 179 | header_ = 0;
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| 180 | throw(AipsError("Illegal Beam selection"));
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| 181 | }
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| 182 | }
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| 183 | Vector<Int> start(nIF_, 1);
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| 184 | Vector<Int> end(nIF_, 0);
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| 185 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol_);
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| 186 | table_->putSDHeader(*header_);
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| 187 | }
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| 188 |
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| 189 | void STFiller::close( )
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| 190 | {
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| 191 | delete reader_;reader_=0;
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| 192 | delete header_;header_=0;
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| 193 | table_ = 0;
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| 194 | }
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| 195 |
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| 196 | int asap::STFiller::read( )
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| 197 | {
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| 198 | int status = 0;
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| 199 |
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| 200 | Int beamNo, IFno, refBeam, scanNo, cycleNo;
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| 201 | Float azimuth, elevation, focusAxi, focusRot, focusTan,
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| 202 | humidity, parAngle, pressure, temperature, windAz, windSpeed;
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| 203 | Double bandwidth, freqInc, interval, mjd, refFreq, restFreq, srcVel;
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| 204 | String fieldName, srcName, tcalTime;
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| 205 | Vector<Float> calFctr, sigma, tcal, tsys;
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| 206 | Matrix<Float> baseLin, baseSub;
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| 207 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2);
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| 208 | Matrix<Float> spectra;
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| 209 | Matrix<uChar> flagtra;
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| 210 | Complex xCalFctr;
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| 211 | Vector<Complex> xPol;
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| 212 | while ( status == 0 ) {
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| 213 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName,
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| 214 | srcName, srcDir, srcPM, srcVel, IFno, refFreq,
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| 215 | bandwidth, freqInc, restFreq, tcal, tcalTime,
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| 216 | azimuth, elevation, parAngle, focusAxi,
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| 217 | focusTan, focusRot, temperature, pressure,
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| 218 | humidity, windSpeed, windAz, refBeam,
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| 219 | beamNo, direction, scanRate,
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| 220 | tsys, sigma, calFctr, baseLin, baseSub,
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| 221 | spectra, flagtra, xCalFctr, xPol);
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| 222 | if ( status != 0 ) break;
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| 223 | TableRow row(table_->table());
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| 224 | TableRecord& rec = row.record();
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| 225 | RecordFieldPtr<uInt> scanoCol(rec, "SCANNO");
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| 226 | *scanoCol = scanNo-1;
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| 227 | RecordFieldPtr<uInt> cyclenoCol(rec, "CYCLENO");
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| 228 | *cyclenoCol = cycleNo-1;
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| 229 | RecordFieldPtr<Double> mjdCol(rec, "TIME");
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| 230 | *mjdCol = mjd;
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| 231 | RecordFieldPtr<Double> intCol(rec, "INTERVAL");
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| 232 | *intCol = interval;
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| 233 | RecordFieldPtr<String> srcnCol(rec, "SRCNAME");
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| 234 | RecordFieldPtr<Int> srctCol(rec, "SRCTYPE");
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| 235 | // try to auto-identify if it is on or off.
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| 236 | Regex rx(".*_[e|w|R]$");
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| 237 | Regex rx2("_[e|w|R|S]$");
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| 238 | Int match = srcName.matches(rx);
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| 239 | if (match) {
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| 240 | *srcnCol = srcName;
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| 241 | } else {
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| 242 | *srcnCol = srcName.before(rx2);
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| 243 | }
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| 244 | //*srcnCol = srcName;//.before(rx2);
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| 245 | *srctCol = match;
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| 246 | RecordFieldPtr<uInt> beamCol(rec, "BEAMNO");
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| 247 | *beamCol = beamNo-beamOffset_-1;
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| 248 | RecordFieldPtr<Int> rbCol(rec, "REFBEAMNO");
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| 249 | Int rb = -1;
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| 250 | if (nBeam_ > 1 ) rb = refBeam-1;
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| 251 | *rbCol = rb;
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| 252 | RecordFieldPtr<uInt> ifCol(rec, "IFNO");
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| 253 | *ifCol = IFno-ifOffset_- 1;
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| 254 | uInt id;
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| 255 | /// @todo this has to change when nchan isn't global anymore
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| 256 | id = table_->frequencies().addEntry(Double(header_->nchan/2),
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| 257 | refFreq, freqInc);
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| 258 | RecordFieldPtr<uInt> mfreqidCol(rec, "FREQ_ID");
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| 259 | *mfreqidCol = id;
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| 260 |
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| 261 | id = table_->molecules().addEntry(restFreq);
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| 262 | RecordFieldPtr<uInt> molidCol(rec, "MOLECULE_ID");
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| 263 | *molidCol = id;
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| 264 |
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| 265 | id = table_->tcal().addEntry(tcalTime, tcal);
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| 266 | RecordFieldPtr<uInt> mcalidCol(rec, "TCAL_ID");
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| 267 | *mcalidCol = id;
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| 268 | id = table_->weather().addEntry(temperature, pressure, humidity,
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| 269 | windSpeed, windAz);
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| 270 | RecordFieldPtr<uInt> mweatheridCol(rec, "WEATHER_ID");
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| 271 | *mweatheridCol = id;
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| 272 | RecordFieldPtr<uInt> mfocusidCol(rec, "FOCUS_ID");
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| 273 | id = table_->focus().addEntry(focusAxi, focusTan, focusRot);
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| 274 | *mfocusidCol = id;
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| 275 | RecordFieldPtr<Array<Double> > dirCol(rec, "DIRECTION");
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| 276 | *dirCol = direction;
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| 277 | RecordFieldPtr<Double> azCol(rec, "AZIMUTH");
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| 278 | *azCol = azimuth;
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| 279 | RecordFieldPtr<Double> elCol(rec, "ELEVATION");
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| 280 | *elCol = elevation;
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| 281 |
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| 282 | RecordFieldPtr<Float> parCol(rec, "PARANGLE");
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| 283 | *parCol = parAngle;
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| 284 |
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| 285 | RecordFieldPtr< Array<Float> > specCol(rec, "SPECTRA");
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| 286 | RecordFieldPtr< Array<uChar> > flagCol(rec, "FLAGTRA");
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| 287 | RecordFieldPtr< uInt > polnoCol(rec, "POLNO");
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| 288 |
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| 289 | RecordFieldPtr< Array<Float> > tsysCol(rec, "TSYS");
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| 290 | // Turn the (nchan,npol) matrix and possible complex xPol vector
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| 291 | // into 2-4 rows in the scantable
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| 292 | Vector<Float> tsysvec(1);
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| 293 | // Why is spectra.ncolumn() == 3 for haveXPol_ == True
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| 294 | uInt npol = (spectra.ncolumn()==1 ? 1: 2);
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| 295 | for ( uInt i=0; i< npol; ++i ) {
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| 296 | tsysvec = tsys(i);
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| 297 | *tsysCol = tsysvec;
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| 298 | *polnoCol = i;
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| 299 |
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| 300 | *specCol = spectra.column(i);
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| 301 | *flagCol = flagtra.column(i);
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| 302 | table_->table().addRow();
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| 303 | row.put(table_->table().nrow()-1, rec);
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| 304 | }
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| 305 | if ( haveXPol_ ) {
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| 306 | // no tsys given for xpol, so emulate it
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| 307 | tsysvec = sqrt(tsys[0]*tsys[1]);
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| 308 | *tsysCol = tsysvec;
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| 309 | // add real part of cross pol
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| 310 | *polnoCol = 2;
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| 311 | Vector<Float> r(real(xPol));
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| 312 | *specCol = r;
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| 313 | // make up flags from linears
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| 314 | /// @fixme this has to be a bitwise or of both pols
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| 315 | *flagCol = flagtra.column(0);// | flagtra.column(1);
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| 316 | table_->table().addRow();
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| 317 | row.put(table_->table().nrow()-1, rec);
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| 318 | // ad imaginary part of cross pol
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| 319 | *polnoCol = 3;
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| 320 | Vector<Float> im(imag(xPol));
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| 321 | *specCol = im;
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| 322 | table_->table().addRow();
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| 323 | row.put(table_->table().nrow()-1, rec);
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| 324 | }
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| 325 | }
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| 326 | if (status > 0) {
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| 327 | close();
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| 328 | throw(AipsError("Reading error occured, data possibly corrupted."));
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| 329 | }
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| 330 |
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| 331 | return status;
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| 332 | }
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| 333 |
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| 334 | }//namespace asap
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