| 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/Arrays/ArrayLogical.h>
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| 21 | #include <casa/Utilities/Regex.h>
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| 22 |
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| 23 | #include <casa/Containers/RecordField.h>
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| 24 |
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| 25 | #include <tables/Tables/TableRow.h>
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| 26 |
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| 27 | #include <atnf/PKSIO/PKSreader.h>
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| 28 |
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| 29 | #include "STDefs.h"
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| 30 | #include "STAttr.h"
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| 31 |
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| 32 | #include "STFiller.h"
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| 33 | #include "STHeader.h"
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| 34 |
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| 35 | using namespace casa;
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| 36 |
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| 37 | namespace asap {
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| 38 |
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| 39 | STFiller::STFiller() :
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| 40 | reader_(0),
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| 41 | header_(0),
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| 42 | table_(0)
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| 43 | {
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| 44 | }
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| 45 |
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| 46 | STFiller::STFiller( CountedPtr< Scantable > stbl ) :
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| 47 | reader_(0),
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| 48 | header_(0),
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| 49 | table_(stbl)
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| 50 | {
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| 51 | }
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| 52 |
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| 53 | STFiller::STFiller(const std::string& filename, int whichIF, int whichBeam ) :
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| 54 | reader_(0),
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| 55 | header_(0),
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| 56 | table_(0)
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| 57 | {
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| 58 | open(filename, whichIF, whichBeam);
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| 59 | }
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| 60 |
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| 61 | STFiller::~STFiller()
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| 62 | {
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| 63 | close();
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| 64 | }
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| 65 |
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| 66 | void STFiller::open( const std::string& filename, int whichIF, int whichBeam )
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| 67 | {
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| 68 | if (table_.null()) {
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| 69 | table_ = new Scantable();
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| 70 | }
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| 71 | if (reader_) { delete reader_; reader_ = 0; }
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| 72 | Bool haveBase, haveSpectra;
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| 73 |
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| 74 | String inName(filename);
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| 75 | Path path(inName);
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| 76 | inName = path.expandedName();
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| 77 |
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| 78 | File file(inName);
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| 79 | if ( !file.exists() ) {
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| 80 | throw(AipsError("File does not exist"));
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| 81 | }
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| 82 | filename_ = inName;
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| 83 |
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| 84 | // Create reader and fill in values for arguments
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| 85 | String format;
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| 86 | Vector<Bool> beams, ifs;
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| 87 | Vector<uInt> nchans,npols;
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| 88 | if ( (reader_ = getPKSreader(inName, 0, 0, format, beams, ifs,
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| 89 | nchans, npols, haveXPol_,haveBase, haveSpectra
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| 90 | )) == 0 ) {
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| 91 | throw(AipsError("Creation of PKSreader failed"));
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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 | throw(AipsError("No spectral data in file."));
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| 97 | return;
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| 98 | }
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| 99 | nBeam_ = beams.nelements();
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| 100 | nIF_ = ifs.nelements();
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| 101 | // Get basic parameters.
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| 102 | if ( anyEQ(haveXPol_, True) ) {
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| 103 | pushLog("Cross polarization present");
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| 104 | for (uInt i=0; i< npols.nelements();++i) {
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| 105 | if (npols[i] < 3) npols[i] += 2;// Convert Complex -> 2 Floats
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| 106 | }
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| 107 | }
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| 108 | if (header_) delete header_;
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| 109 | header_ = new STHeader();
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| 110 | header_->nchan = max(nchans);
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| 111 | header_->npol = max(npols);
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| 112 | header_->nbeam = nBeam_;
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| 113 |
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| 114 | // not the right thing to do?!
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| 115 | //if ( nPol_ == 1 ) header_->poltype = "stokes";
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| 116 | //else header_->poltype = "linear";
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| 117 | header_->poltype = "linear";
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| 118 | Int status = reader_->getHeader(header_->observer, header_->project,
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| 119 | header_->antennaname, header_->antennaposition,
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| 120 | header_->obstype,header_->equinox,
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| 121 | header_->freqref,
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| 122 | header_->utc, header_->reffreq,
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| 123 | header_->bandwidth);
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| 124 |
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| 125 | if (status) {
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| 126 | delete reader_;
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| 127 | reader_ = 0;
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| 128 | delete header_;
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| 129 | header_ = 0;
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| 130 | throw(AipsError("Failed to get header."));
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| 131 | }
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| 132 | if ((header_->obstype).matches("*SW*")) {
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| 133 | // need robust way here - probably read ahead of next timestamp
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| 134 | pushLog("Header indicates frequency switched observation.\n"
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| 135 | "setting # of IFs = 1 ");
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| 136 | nIF_ = 1;
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| 137 | header_->obstype = String("fswitch");
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| 138 | }
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| 139 | // Determine Telescope and set brightness unit
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| 140 |
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| 141 | Bool throwIt = False;
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| 142 | Instrument inst = STAttr::convertInstrument(header_->antennaname, throwIt);
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| 143 | header_->fluxunit = "Jy";
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| 144 | if (inst==ATMOPRA || inst==TIDBINBILLA) {
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| 145 | header_->fluxunit = "K";
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| 146 | }
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| 147 |
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| 148 | header_->nif = nIF_;
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| 149 | header_->epoch = "UTC";
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| 150 | // *** header_->frequnit = "Hz"
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| 151 | // Apply selection criteria.
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| 152 | Vector<Int> ref;
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| 153 | ifOffset_ = 0;
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| 154 | if (whichIF>=0) {
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| 155 | if (whichIF>=0 && whichIF<nIF_) {
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| 156 | ifs = False;
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| 157 | ifs(whichIF) = True;
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| 158 | header_->nif = 1;
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| 159 | nIF_ = 1;
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| 160 | ifOffset_ = whichIF;
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| 161 | } else {
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| 162 | delete reader_;
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| 163 | reader_ = 0;
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| 164 | delete header_;
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| 165 | header_ = 0;
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| 166 | throw(AipsError("Illegal IF selection"));
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| 167 | }
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| 168 | }
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| 169 | beamOffset_ = 0;
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| 170 | if (whichBeam>=0) {
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| 171 | if (whichBeam>=0 && whichBeam<nBeam_) {
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| 172 | beams = False;
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| 173 | beams(whichBeam) = True;
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| 174 | header_->nbeam = 1;
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| 175 | nBeam_ = 1;
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| 176 | beamOffset_ = whichBeam;
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| 177 | } else {
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| 178 | delete reader_;
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| 179 | reader_ = 0;
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| 180 | delete header_;
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| 181 | header_ = 0;
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| 182 | throw(AipsError("Illegal Beam selection"));
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| 183 | }
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| 184 | }
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| 185 | Vector<Int> start(nIF_, 1);
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| 186 | Vector<Int> end(nIF_, 0);
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| 187 | reader_->select(beams, ifs, start, end, ref, True, haveXPol_[0], False);
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| 188 | table_->setHeader(*header_);
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| 189 | }
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| 190 |
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| 191 | void STFiller::close( )
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| 192 | {
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| 193 | delete reader_;reader_=0;
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| 194 | delete header_;header_=0;
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| 195 | table_ = 0;
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| 196 | }
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| 197 |
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| 198 | int asap::STFiller::read( )
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| 199 | {
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| 200 | int status = 0;
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| 201 |
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| 202 | Int beamNo, IFno, refBeam, scanNo, cycleNo;
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| 203 | Float azimuth, elevation, focusAxi, focusRot, focusTan,
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| 204 | humidity, parAngle, pressure, temperature, windAz, windSpeed;
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| 205 | Double bandwidth, freqInc, interval, mjd, refFreq, restFreq, srcVel;
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| 206 | String fieldName, srcName, tcalTime, obsType;
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| 207 | Vector<Float> calFctr, sigma, tcal, tsys;
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| 208 | Matrix<Float> baseLin, baseSub;
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| 209 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2);
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| 210 | Matrix<Float> spectra;
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| 211 | Matrix<uChar> flagtra;
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| 212 | Complex xCalFctr;
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| 213 | Vector<Complex> xPol;
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| 214 | while ( status == 0 ) {
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| 215 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName,
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| 216 | srcName, srcDir, srcPM, srcVel, obsType, IFno,
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| 217 | refFreq, bandwidth, freqInc, restFreq, tcal, tcalTime,
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| 218 | azimuth, elevation, parAngle, focusAxi,
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| 219 | focusTan, focusRot, temperature, pressure,
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| 220 | humidity, windSpeed, windAz, refBeam,
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| 221 | beamNo, direction, scanRate,
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| 222 | tsys, sigma, calFctr, baseLin, baseSub,
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| 223 | spectra, flagtra, xCalFctr, xPol);
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| 224 | if ( status != 0 ) break;
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| 225 | Regex filterrx(".*[SL|PA]$");
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| 226 | Regex obsrx("^AT.+");
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| 227 | if ( header_->antennaname.matches(obsrx) && obsType.matches(filterrx)) {
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| 228 | //cerr << "ignoring paddle scan" << endl;
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| 229 | continue;
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| 230 | }
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| 231 | TableRow row(table_->table());
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| 232 | TableRecord& rec = row.record();
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| 233 | // fields that don't get used and are just passed through asap
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| 234 | RecordFieldPtr<Array<Double> > srateCol(rec, "SCANRATE");
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| 235 | *srateCol = scanRate;
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| 236 | RecordFieldPtr<Array<Double> > spmCol(rec, "SRCPROPERMOTION");
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| 237 | *spmCol = srcPM;
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| 238 | RecordFieldPtr<Array<Double> > sdirCol(rec, "SRCDIRECTION");
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| 239 | *sdirCol = srcDir;
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| 240 | RecordFieldPtr<Double> svelCol(rec, "SRCVELOCITY");
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| 241 | *svelCol = srcVel;
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| 242 | // the real stuff
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| 243 | RecordFieldPtr<Int> fitCol(rec, "FIT_ID");
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| 244 | *fitCol = -1;
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| 245 | RecordFieldPtr<uInt> scanoCol(rec, "SCANNO");
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| 246 | *scanoCol = scanNo-1;
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| 247 | RecordFieldPtr<uInt> cyclenoCol(rec, "CYCLENO");
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| 248 | *cyclenoCol = cycleNo-1;
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| 249 | RecordFieldPtr<Double> mjdCol(rec, "TIME");
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| 250 | *mjdCol = mjd;
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| 251 | RecordFieldPtr<Double> intCol(rec, "INTERVAL");
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| 252 | *intCol = interval;
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| 253 | RecordFieldPtr<String> srcnCol(rec, "SRCNAME");
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| 254 | RecordFieldPtr<Int> srctCol(rec, "SRCTYPE");
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| 255 | // try to auto-identify if it is on or off.
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| 256 | Regex rx(".*[e|w|_R]$");
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| 257 | Regex rx2("_S$");
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| 258 | Int match = srcName.matches(rx);
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| 259 | if (match) {
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| 260 | *srcnCol = srcName;
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| 261 | } else {
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| 262 | *srcnCol = srcName.before(rx2);
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| 263 | }
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| 264 | //*srcnCol = srcName;//.before(rx2);
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| 265 | *srctCol = match;
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| 266 | RecordFieldPtr<uInt> beamCol(rec, "BEAMNO");
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| 267 | *beamCol = beamNo-beamOffset_-1;
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| 268 | RecordFieldPtr<Int> rbCol(rec, "REFBEAMNO");
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| 269 | Int rb = -1;
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| 270 | if (nBeam_ > 1 ) rb = refBeam-1;
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| 271 | *rbCol = rb;
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| 272 | RecordFieldPtr<uInt> ifCol(rec, "IFNO");
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| 273 | *ifCol = IFno-ifOffset_- 1;
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| 274 | uInt id;
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| 275 | /// @todo this has to change when nchan isn't global anymore
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| 276 | id = table_->frequencies().addEntry(Double(header_->nchan/2),
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| 277 | refFreq, freqInc);
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| 278 | RecordFieldPtr<uInt> mfreqidCol(rec, "FREQ_ID");
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| 279 | *mfreqidCol = id;
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| 280 |
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| 281 | id = table_->molecules().addEntry(restFreq);
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| 282 | RecordFieldPtr<uInt> molidCol(rec, "MOLECULE_ID");
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| 283 | *molidCol = id;
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| 284 |
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| 285 | id = table_->tcal().addEntry(tcalTime, tcal);
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| 286 | RecordFieldPtr<uInt> mcalidCol(rec, "TCAL_ID");
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| 287 | *mcalidCol = id;
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| 288 | id = table_->weather().addEntry(temperature, pressure, humidity,
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| 289 | windSpeed, windAz);
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| 290 | RecordFieldPtr<uInt> mweatheridCol(rec, "WEATHER_ID");
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| 291 | *mweatheridCol = id;
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| 292 | RecordFieldPtr<uInt> mfocusidCol(rec, "FOCUS_ID");
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| 293 | id = table_->focus().addEntry(focusAxi, focusTan, focusRot);
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| 294 | *mfocusidCol = id;
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| 295 | RecordFieldPtr<Array<Double> > dirCol(rec, "DIRECTION");
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| 296 | *dirCol = direction;
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| 297 | RecordFieldPtr<Float> azCol(rec, "AZIMUTH");
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| 298 | *azCol = azimuth;
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| 299 | RecordFieldPtr<Float> elCol(rec, "ELEVATION");
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| 300 | *elCol = elevation;
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| 301 |
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| 302 | RecordFieldPtr<Float> parCol(rec, "PARANGLE");
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| 303 | *parCol = parAngle;
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| 304 |
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| 305 | RecordFieldPtr< Array<Float> > specCol(rec, "SPECTRA");
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| 306 | RecordFieldPtr< Array<uChar> > flagCol(rec, "FLAGTRA");
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| 307 | RecordFieldPtr< uInt > polnoCol(rec, "POLNO");
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| 308 |
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| 309 | RecordFieldPtr< Array<Float> > tsysCol(rec, "TSYS");
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| 310 | // Turn the (nchan,npol) matrix and possible complex xPol vector
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| 311 | // into 2-4 rows in the scantable
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| 312 | Vector<Float> tsysvec(1);
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| 313 | // Why is spectra.ncolumn() == 3 for haveXPol_ == True
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| 314 | uInt npol = (spectra.ncolumn()==1 ? 1: 2);
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| 315 | for ( uInt i=0; i< npol; ++i ) {
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| 316 | tsysvec = tsys(i);
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| 317 | *tsysCol = tsysvec;
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| 318 | *polnoCol = i;
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| 319 |
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| 320 | *specCol = spectra.column(i);
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| 321 | *flagCol = flagtra.column(i);
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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 | if ( haveXPol_[0] ) {
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| 326 | // no tsys given for xpol, so emulate it
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| 327 | tsysvec = sqrt(tsys[0]*tsys[1]);
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| 328 | *tsysCol = tsysvec;
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| 329 | // add real part of cross pol
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| 330 | *polnoCol = 2;
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| 331 | Vector<Float> r(real(xPol));
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| 332 | *specCol = r;
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| 333 | // make up flags from linears
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| 334 | /// @fixme this has to be a bitwise or of both pols
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| 335 | *flagCol = flagtra.column(0);// | flagtra.column(1);
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| 336 | table_->table().addRow();
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| 337 | row.put(table_->table().nrow()-1, rec);
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| 338 | // ad imaginary part of cross pol
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| 339 | *polnoCol = 3;
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| 340 | Vector<Float> im(imag(xPol));
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| 341 | *specCol = im;
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| 342 | table_->table().addRow();
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| 343 | row.put(table_->table().nrow()-1, rec);
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| 344 | }
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| 345 | }
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| 346 | if (status > 0) {
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| 347 | close();
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| 348 | throw(AipsError("Reading error occured, data possibly corrupted."));
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| 349 | }
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| 350 | return status;
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| 351 | }
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| 352 |
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| 353 | }//namespace asap
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