[805] | 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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[404] | 12 | #include <casa/iostream.h> |
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| 13 | #include <casa/iomanip.h> |
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| 14 | |
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[125] | 15 | #include <casa/Exceptions.h> |
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[284] | 16 | #include <casa/OS/Path.h> |
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[290] | 17 | #include <casa/OS/File.h> |
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[338] | 18 | #include <casa/Quanta/Unit.h> |
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[805] | 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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[2] | 26 | #include <atnf/PKSIO/PKSreader.h> |
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[125] | 27 | |
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[835] | 28 | #include "STDefs.h" |
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[878] | 29 | #include "STAttr.h" |
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[2] | 30 | |
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[805] | 31 | #include "STFiller.h" |
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[901] | 32 | #include "STHeader.h" |
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[805] | 33 | |
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[125] | 34 | using namespace casa; |
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[2] | 35 | |
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[805] | 36 | namespace asap { |
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| 37 | |
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| 38 | STFiller::STFiller() : |
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[2] | 39 | reader_(0), |
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[405] | 40 | header_(0), |
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[805] | 41 | table_(0) |
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[420] | 42 | { |
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[2] | 43 | } |
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[805] | 44 | |
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| 45 | STFiller::STFiller( CountedPtr< Scantable > stbl ) : |
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[46] | 46 | reader_(0), |
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[405] | 47 | header_(0), |
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[805] | 48 | table_(stbl) |
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[420] | 49 | { |
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[46] | 50 | } |
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[2] | 51 | |
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[855] | 52 | STFiller::STFiller(const std::string& filename, int whichIF, int whichBeam ) : |
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[2] | 53 | reader_(0), |
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[405] | 54 | header_(0), |
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[805] | 55 | table_(0) |
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[420] | 56 | { |
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[805] | 57 | open(filename, whichIF, whichBeam); |
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[2] | 58 | } |
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| 59 | |
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[805] | 60 | STFiller::~STFiller() |
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| 61 | { |
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| 62 | close(); |
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[2] | 63 | } |
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| 64 | |
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[855] | 65 | void STFiller::open( const std::string& filename, int whichIF, int whichBeam ) |
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[805] | 66 | { |
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[846] | 67 | if (table_.null()) { |
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| 68 | table_ = new Scantable(); |
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| 69 | } |
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[805] | 70 | if (reader_) { delete reader_; reader_ = 0; } |
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| 71 | Bool haveBase, haveSpectra; |
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[2] | 72 | |
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| 73 | String inName(filename); |
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[284] | 74 | Path path(inName); |
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| 75 | inName = path.expandedName(); |
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[405] | 76 | |
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[290] | 77 | File file(inName); |
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[805] | 78 | if ( !file.exists() ) { |
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[290] | 79 | throw(AipsError("File does not exist")); |
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| 80 | } |
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[87] | 81 | filename_ = inName; |
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[332] | 82 | |
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[405] | 83 | // Create reader and fill in values for arguments |
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[2] | 84 | String format; |
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| 85 | Vector<Bool> beams; |
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[805] | 86 | if ( (reader_ = getPKSreader(inName, 0, 0, format, beams, nIF_, |
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[2] | 87 | nChan_, nPol_, haveBase, haveSpectra, |
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[805] | 88 | haveXPol_)) == 0 ) { |
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[405] | 89 | throw(AipsError("Creation of PKSreader failed")); |
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[2] | 90 | } |
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| 91 | if (!haveSpectra) { |
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| 92 | delete reader_; |
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| 93 | reader_ = 0; |
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[87] | 94 | throw(AipsError("No spectral data in file.")); |
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[2] | 95 | return; |
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| 96 | } |
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[405] | 97 | |
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[2] | 98 | nBeam_ = beams.nelements(); |
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| 99 | // Get basic parameters. |
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[805] | 100 | if ( haveXPol_ ) { |
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[717] | 101 | pushLog("Cross polarization present"); |
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[420] | 102 | nPol_ += 2; // Convert Complex -> 2 Floats |
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[110] | 103 | } |
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[405] | 104 | if (header_) delete header_; |
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[901] | 105 | header_ = new STHeader(); |
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[405] | 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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[942] | 110 | // not the right thing to do?! |
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| 111 | //if ( nPol_ == 1 ) header_->poltype = "stokes"; |
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| 112 | //else header_->poltype = "linear"; |
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| 113 | header_->poltype = "linear"; |
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[405] | 114 | Int status = reader_->getHeader(header_->observer, header_->project, |
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| 115 | header_->antennaname, header_->antennaposition, |
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| 116 | header_->obstype,header_->equinox, |
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| 117 | header_->freqref, |
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| 118 | header_->utc, header_->reffreq, |
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| 119 | header_->bandwidth); |
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| 120 | |
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[2] | 121 | if (status) { |
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| 122 | delete reader_; |
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| 123 | reader_ = 0; |
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[805] | 124 | delete header_; |
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| 125 | header_ = 0; |
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[87] | 126 | throw(AipsError("Failed to get header.")); |
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[2] | 127 | } |
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[405] | 128 | if ((header_->obstype).matches("*SW*")) { |
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[2] | 129 | // need robust way here - probably read ahead of next timestamp |
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[717] | 130 | pushLog("Header indicates frequency switched observation.\n" |
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[754] | 131 | "setting # of IFs = 1 "); |
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[2] | 132 | nIF_ = 1; |
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[805] | 133 | header_->obstype = String("fswitch"); |
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[2] | 134 | } |
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[337] | 135 | |
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[405] | 136 | // Determine Telescope and set brightness unit |
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[342] | 137 | |
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| 138 | Bool throwIt = False; |
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[878] | 139 | Instrument inst = STAttr::convertInstrument(header_->antennaname, throwIt); |
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[405] | 140 | header_->fluxunit = "Jy"; |
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[342] | 141 | if (inst==ATMOPRA || inst==TIDBINBILLA) { |
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[405] | 142 | header_->fluxunit = "K"; |
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[342] | 143 | } |
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[332] | 144 | |
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[405] | 145 | header_->nif = nIF_; |
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| 146 | header_->epoch = "UTC"; |
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[805] | 147 | // *** header_->frequnit = "Hz" |
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[2] | 148 | // Apply selection criteria. |
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[332] | 149 | |
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[2] | 150 | Vector<Int> ref; |
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| 151 | Vector<Bool> beamSel(nBeam_,True); |
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| 152 | Vector<Bool> IFsel(nIF_,True); |
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[405] | 153 | |
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[332] | 154 | ifOffset_ = 0; |
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| 155 | if (whichIF>=0) { |
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| 156 | if (whichIF>=0 && whichIF<nIF_) { |
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[805] | 157 | IFsel = False; |
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| 158 | IFsel(whichIF) = True; |
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| 159 | header_->nif = 1; |
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| 160 | nIF_ = 1; |
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| 161 | ifOffset_ = whichIF; |
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[332] | 162 | } else { |
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[805] | 163 | delete reader_; |
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| 164 | reader_ = 0; |
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| 165 | delete header_; |
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| 166 | header_ = 0; |
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| 167 | throw(AipsError("Illegal IF selection")); |
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[332] | 168 | } |
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| 169 | } |
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[405] | 170 | |
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[332] | 171 | beamOffset_ = 0; |
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| 172 | if (whichBeam>=0) { |
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[805] | 173 | if (whichBeam>=0 && whichBeam<nBeam_) { |
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| 174 | beamSel = False; |
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| 175 | beamSel(whichBeam) = True; |
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| 176 | header_->nbeam = 1; |
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| 177 | nBeam_ = 1; |
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| 178 | beamOffset_ = whichBeam; |
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| 179 | } else { |
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| 180 | delete reader_; |
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| 181 | reader_ = 0; |
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| 182 | delete header_; |
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| 183 | header_ = 0; |
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| 184 | throw(AipsError("Illegal Beam selection")); |
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| 185 | } |
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[332] | 186 | } |
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| 187 | Vector<Int> start(nIF_, 1); |
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| 188 | Vector<Int> end(nIF_, 0); |
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[420] | 189 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol_); |
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[846] | 190 | table_->setHeader(*header_); |
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[805] | 191 | } |
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[405] | 192 | |
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[805] | 193 | void STFiller::close( ) |
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| 194 | { |
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| 195 | delete reader_;reader_=0; |
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| 196 | delete header_;header_=0; |
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| 197 | table_ = 0; |
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[2] | 198 | } |
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| 199 | |
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[805] | 200 | int asap::STFiller::read( ) |
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| 201 | { |
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[87] | 202 | int status = 0; |
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| 203 | |
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[17] | 204 | Int beamNo, IFno, refBeam, scanNo, cycleNo; |
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[87] | 205 | Float azimuth, elevation, focusAxi, focusRot, focusTan, |
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[2] | 206 | humidity, parAngle, pressure, temperature, windAz, windSpeed; |
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[73] | 207 | Double bandwidth, freqInc, interval, mjd, refFreq, restFreq, srcVel; |
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[2] | 208 | String fieldName, srcName, tcalTime; |
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| 209 | Vector<Float> calFctr, sigma, tcal, tsys; |
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| 210 | Matrix<Float> baseLin, baseSub; |
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| 211 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2); |
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| 212 | Matrix<Float> spectra; |
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| 213 | Matrix<uChar> flagtra; |
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| 214 | Complex xCalFctr; |
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| 215 | Vector<Complex> xPol; |
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[805] | 216 | while ( status == 0 ) { |
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| 217 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName, |
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| 218 | srcName, srcDir, srcPM, srcVel, IFno, refFreq, |
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| 219 | bandwidth, freqInc, restFreq, tcal, tcalTime, |
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| 220 | azimuth, elevation, parAngle, focusAxi, |
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| 221 | focusTan, focusRot, temperature, pressure, |
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| 222 | humidity, windSpeed, windAz, refBeam, |
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| 223 | beamNo, direction, scanRate, |
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| 224 | tsys, sigma, calFctr, baseLin, baseSub, |
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| 225 | spectra, flagtra, xCalFctr, xPol); |
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| 226 | if ( status != 0 ) break; |
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| 227 | TableRow row(table_->table()); |
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| 228 | TableRecord& rec = row.record(); |
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| 229 | RecordFieldPtr<uInt> scanoCol(rec, "SCANNO"); |
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| 230 | *scanoCol = scanNo-1; |
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| 231 | RecordFieldPtr<uInt> cyclenoCol(rec, "CYCLENO"); |
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| 232 | *cyclenoCol = cycleNo-1; |
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| 233 | RecordFieldPtr<Double> mjdCol(rec, "TIME"); |
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| 234 | *mjdCol = mjd; |
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| 235 | RecordFieldPtr<Double> intCol(rec, "INTERVAL"); |
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| 236 | *intCol = interval; |
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| 237 | RecordFieldPtr<String> srcnCol(rec, "SRCNAME"); |
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| 238 | RecordFieldPtr<Int> srctCol(rec, "SRCTYPE"); |
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| 239 | // try to auto-identify if it is on or off. |
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[922] | 240 | Regex rx(".*[e|w|_R]$"); |
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[942] | 241 | Regex rx2("_S$"); |
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[805] | 242 | Int match = srcName.matches(rx); |
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| 243 | if (match) { |
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| 244 | *srcnCol = srcName; |
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| 245 | } else { |
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| 246 | *srcnCol = srcName.before(rx2); |
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| 247 | } |
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| 248 | //*srcnCol = srcName;//.before(rx2); |
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| 249 | *srctCol = match; |
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| 250 | RecordFieldPtr<uInt> beamCol(rec, "BEAMNO"); |
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| 251 | *beamCol = beamNo-beamOffset_-1; |
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| 252 | RecordFieldPtr<Int> rbCol(rec, "REFBEAMNO"); |
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| 253 | Int rb = -1; |
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| 254 | if (nBeam_ > 1 ) rb = refBeam-1; |
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| 255 | *rbCol = rb; |
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| 256 | RecordFieldPtr<uInt> ifCol(rec, "IFNO"); |
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| 257 | *ifCol = IFno-ifOffset_- 1; |
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| 258 | uInt id; |
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| 259 | /// @todo this has to change when nchan isn't global anymore |
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| 260 | id = table_->frequencies().addEntry(Double(header_->nchan/2), |
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| 261 | refFreq, freqInc); |
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| 262 | RecordFieldPtr<uInt> mfreqidCol(rec, "FREQ_ID"); |
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| 263 | *mfreqidCol = id; |
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[25] | 264 | |
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[805] | 265 | id = table_->molecules().addEntry(restFreq); |
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| 266 | RecordFieldPtr<uInt> molidCol(rec, "MOLECULE_ID"); |
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| 267 | *molidCol = id; |
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[414] | 268 | |
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[805] | 269 | id = table_->tcal().addEntry(tcalTime, tcal); |
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| 270 | RecordFieldPtr<uInt> mcalidCol(rec, "TCAL_ID"); |
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| 271 | *mcalidCol = id; |
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| 272 | id = table_->weather().addEntry(temperature, pressure, humidity, |
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| 273 | windSpeed, windAz); |
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| 274 | RecordFieldPtr<uInt> mweatheridCol(rec, "WEATHER_ID"); |
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| 275 | *mweatheridCol = id; |
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| 276 | RecordFieldPtr<uInt> mfocusidCol(rec, "FOCUS_ID"); |
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| 277 | id = table_->focus().addEntry(focusAxi, focusTan, focusRot); |
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| 278 | *mfocusidCol = id; |
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| 279 | RecordFieldPtr<Array<Double> > dirCol(rec, "DIRECTION"); |
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| 280 | *dirCol = direction; |
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[922] | 281 | RecordFieldPtr<Float> azCol(rec, "AZIMUTH"); |
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[805] | 282 | *azCol = azimuth; |
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[922] | 283 | RecordFieldPtr<Float> elCol(rec, "ELEVATION"); |
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[805] | 284 | *elCol = elevation; |
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[405] | 285 | |
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[805] | 286 | RecordFieldPtr<Float> parCol(rec, "PARANGLE"); |
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| 287 | *parCol = parAngle; |
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[332] | 288 | |
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[805] | 289 | RecordFieldPtr< Array<Float> > specCol(rec, "SPECTRA"); |
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| 290 | RecordFieldPtr< Array<uChar> > flagCol(rec, "FLAGTRA"); |
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| 291 | RecordFieldPtr< uInt > polnoCol(rec, "POLNO"); |
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[405] | 292 | |
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[805] | 293 | RecordFieldPtr< Array<Float> > tsysCol(rec, "TSYS"); |
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| 294 | // Turn the (nchan,npol) matrix and possible complex xPol vector |
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| 295 | // into 2-4 rows in the scantable |
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| 296 | Vector<Float> tsysvec(1); |
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| 297 | // Why is spectra.ncolumn() == 3 for haveXPol_ == True |
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| 298 | uInt npol = (spectra.ncolumn()==1 ? 1: 2); |
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| 299 | for ( uInt i=0; i< npol; ++i ) { |
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| 300 | tsysvec = tsys(i); |
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| 301 | *tsysCol = tsysvec; |
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| 302 | *polnoCol = i; |
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[405] | 303 | |
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[805] | 304 | *specCol = spectra.column(i); |
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| 305 | *flagCol = flagtra.column(i); |
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| 306 | table_->table().addRow(); |
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| 307 | row.put(table_->table().nrow()-1, rec); |
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[2] | 308 | } |
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[805] | 309 | if ( haveXPol_ ) { |
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| 310 | // no tsys given for xpol, so emulate it |
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| 311 | tsysvec = sqrt(tsys[0]*tsys[1]); |
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| 312 | *tsysCol = tsysvec; |
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| 313 | // add real part of cross pol |
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| 314 | *polnoCol = 2; |
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| 315 | Vector<Float> r(real(xPol)); |
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| 316 | *specCol = r; |
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| 317 | // make up flags from linears |
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| 318 | /// @fixme this has to be a bitwise or of both pols |
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| 319 | *flagCol = flagtra.column(0);// | flagtra.column(1); |
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| 320 | table_->table().addRow(); |
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| 321 | row.put(table_->table().nrow()-1, rec); |
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| 322 | // ad imaginary part of cross pol |
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| 323 | *polnoCol = 3; |
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| 324 | Vector<Float> im(imag(xPol)); |
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| 325 | *specCol = im; |
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| 326 | table_->table().addRow(); |
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| 327 | row.put(table_->table().nrow()-1, rec); |
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[2] | 328 | } |
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[805] | 329 | } |
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| 330 | if (status > 0) { |
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| 331 | close(); |
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| 332 | throw(AipsError("Reading error occured, data possibly corrupted.")); |
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| 333 | } |
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[2] | 334 | return status; |
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| 335 | } |
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[805] | 336 | |
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| 337 | }//namespace asap |
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