| 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# STWriter.cc: ASAP class to write out single dish spectra. |
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| 3 | //#--------------------------------------------------------------------------- |
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| 4 | //# Copyright (C) 2004 |
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| 5 | //# 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: STWriter.cpp 1449 2008-11-19 03:14:26Z MarkCalabretta $ |
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| 30 | //#--------------------------------------------------------------------------- |
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| 31 | |
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| 32 | #include <string> |
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| 33 | |
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| 34 | #include <casa/aips.h> |
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| 35 | #include <casa/Arrays/Array.h> |
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| 36 | #include <casa/Arrays/Vector.h> |
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| 37 | #include <casa/BasicSL/Complex.h> |
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| 38 | #include <casa/Utilities/CountedPtr.h> |
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| 39 | #include <casa/Utilities/Assert.h> |
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| 40 | |
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| 41 | #include <atnf/PKSIO/PKSrecord.h> |
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| 42 | #include <atnf/PKSIO/PKSMS2writer.h> |
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| 43 | #include <atnf/PKSIO/PKSSDwriter.h> |
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| 44 | |
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| 45 | #include <tables/Tables/Table.h> |
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| 46 | #include <tables/Tables/TableIter.h> |
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| 47 | #include <tables/Tables/TableRow.h> |
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| 48 | #include <tables/Tables/ArrayColumn.h> |
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| 49 | |
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| 50 | #include "STFITSImageWriter.h" |
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| 51 | #include "STAsciiWriter.h" |
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| 52 | #include "STHeader.h" |
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| 53 | |
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| 54 | #include "STWriter.h" |
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| 55 | |
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| 56 | using namespace casa; |
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| 57 | namespace asap { |
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| 58 | |
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| 59 | STWriter::STWriter(const std::string &format) |
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| 60 | { |
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| 61 | format_ = format; |
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| 62 | String t(format_); |
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| 63 | t.upcase(); |
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| 64 | if (t == "MS2") { |
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| 65 | writer_ = new PKSMS2writer(); |
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| 66 | } else if (t == "SDFITS") { |
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| 67 | writer_ = new PKSSDwriter(); |
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| 68 | } else if (t == "ASCII" || t == "FITS" || t == "CLASS") { |
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| 69 | writer_ = 0; |
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| 70 | } else { |
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| 71 | throw (AipsError("Unrecognized export format")); |
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| 72 | } |
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| 73 | } |
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| 74 | |
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| 75 | STWriter::~STWriter() |
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| 76 | { |
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| 77 | if (writer_) { |
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| 78 | delete writer_; |
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| 79 | } |
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| 80 | } |
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| 81 | |
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| 82 | Int STWriter::setFormat(const std::string &format) |
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| 83 | { |
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| 84 | if (format != format_) { |
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| 85 | if (writer_) delete writer_; |
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| 86 | } |
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| 87 | |
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| 88 | format_ = format; |
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| 89 | String t(format_); |
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| 90 | t.upcase(); |
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| 91 | if (t== "MS2") { |
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| 92 | writer_ = new PKSMS2writer(); |
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| 93 | } else if (t== "SDFITS") { |
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| 94 | writer_ = new PKSSDwriter(); |
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| 95 | } else if (t == "ASCII" || t == "FITS" || t == "CLASS") { |
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| 96 | writer_ = 0; |
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| 97 | } else { |
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| 98 | throw (AipsError("Unrecognized Format")); |
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| 99 | } |
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| 100 | return 0; |
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| 101 | } |
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| 102 | |
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| 103 | Int STWriter::write(const CountedPtr<Scantable> in, |
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| 104 | const std::string &filename) |
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| 105 | { |
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| 106 | |
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| 107 | if (format_=="ASCII") { |
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| 108 | STAsciiWriter iw; |
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| 109 | if (iw.write(*in, filename)) { |
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| 110 | return 0; |
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| 111 | } else { |
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| 112 | return 1; |
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| 113 | } |
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| 114 | } else if ( format_ == "FITS" || format_ == "CLASS") { |
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| 115 | STFITSImageWriter iw; |
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| 116 | if (format_ == "CLASS") { |
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| 117 | iw.setClass(True); |
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| 118 | } |
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| 119 | if (iw.write(*in, filename)) { |
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| 120 | return 0; |
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| 121 | } |
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| 122 | } |
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| 123 | |
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| 124 | // MS or SDFITS |
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| 125 | |
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| 126 | // Extract the header from the table. |
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| 127 | // this is a little different from what I have done |
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| 128 | // before. Need to check with the Offline User Test data |
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| 129 | STHeader hdr = in->getHeader(); |
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| 130 | //const Int nPol = hdr.npol; |
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| 131 | //const Int nChan = hdr.nchan; |
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| 132 | std::vector<uint> ifs = in->getIFNos(); |
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| 133 | int nIF = in->nif();//ifs.size(); |
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| 134 | Vector<uInt> nPol(nIF),nChan(nIF); |
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| 135 | Vector<Bool> havexpol(nIF); |
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| 136 | String fluxUnit = hdr.fluxunit; |
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| 137 | |
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| 138 | nPol = 0;nChan = 0; havexpol = False; |
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| 139 | for (uint i=0;i<ifs.size();++i) { |
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| 140 | nPol(ifs[i]) = in->npol(); |
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| 141 | nChan(ifs[i]) = in->nchan(ifs[i]); |
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| 142 | havexpol(ifs[i]) = nPol(ifs[i]) > 2; |
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| 143 | } |
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| 144 | |
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| 145 | const Table table = in->table(); |
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| 146 | |
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| 147 | // Create the output file and write static data. |
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| 148 | Int status; |
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| 149 | status = writer_->create(String(filename), hdr.observer, hdr.project, |
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| 150 | hdr.antennaname, hdr.antennaposition, |
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| 151 | hdr.obstype, hdr.fluxunit, |
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| 152 | hdr.equinox, hdr.freqref, |
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| 153 | nChan, nPol, havexpol, False); |
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| 154 | if ( status ) { |
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| 155 | throw(AipsError("Failed to create output file")); |
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| 156 | } |
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| 157 | |
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| 158 | |
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| 159 | Int count = 0; |
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| 160 | PKSrecord pksrec; |
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| 161 | pksrec.scanNo = 1; |
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| 162 | // use spearate iterators to ensure renumbering of all numbers |
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| 163 | TableIterator scanit(table, "SCANNO"); |
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| 164 | while (!scanit.pastEnd() ) { |
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| 165 | Table stable = scanit.table(); |
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| 166 | TableIterator beamit(stable, "BEAMNO"); |
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| 167 | pksrec.beamNo = 1; |
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| 168 | while (!beamit.pastEnd() ) { |
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| 169 | Table btable = beamit.table(); |
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| 170 | TableIterator cycit(btable, "CYCLENO"); |
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| 171 | ROArrayColumn<Double> srateCol(btable, "SCANRATE"); |
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| 172 | srateCol.get(0, pksrec.scanRate); |
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| 173 | ROArrayColumn<Double> spmCol(btable, "SRCPROPERMOTION"); |
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| 174 | spmCol.get(0, pksrec.srcPM); |
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| 175 | ROArrayColumn <Double> sdirCol(btable, "SRCDIRECTION"); |
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| 176 | sdirCol.get(0, pksrec.srcDir); |
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| 177 | ROScalarColumn<Double> svelCol(btable, "SRCVELOCITY"); |
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| 178 | svelCol.get(0, pksrec.srcVel); |
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| 179 | ROScalarColumn<uInt> bCol(btable, "BEAMNO"); |
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| 180 | pksrec.beamNo = bCol(0)+1; |
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| 181 | pksrec.cycleNo = 1; |
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| 182 | while (!cycit.pastEnd() ) { |
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| 183 | Table ctable = cycit.table(); |
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| 184 | TableIterator ifit(ctable, "IFNO"); |
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| 185 | MDirection::ScalarColumn dirCol(ctable, "DIRECTION"); |
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| 186 | pksrec.direction = dirCol(0).getAngle("rad").getValue(); |
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| 187 | pksrec.IFno = 1; |
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| 188 | while (!ifit.pastEnd() ) { |
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| 189 | Table itable = ifit.table(); |
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| 190 | TableRow row(itable); |
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| 191 | // use the first row to fill in all the "metadata" |
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| 192 | const TableRecord& rec = row.get(0); |
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| 193 | ROArrayColumn<Float> specCol(itable, "SPECTRA"); |
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| 194 | pksrec.IFno = rec.asuInt("IFNO")+1; |
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| 195 | uInt nchan = specCol(0).nelements(); |
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| 196 | Double crval,crpix; |
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| 197 | Float tmp0,tmp1,tmp2,tmp3,tmp4; |
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| 198 | String stmp0,stmp1; |
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| 199 | in->frequencies().getEntry(crpix,crval, pksrec.freqInc, |
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| 200 | rec.asuInt("FREQ_ID")); |
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| 201 | in->focus().getEntry(pksrec.focusAxi, pksrec.focusTan, |
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| 202 | pksrec.focusRot, tmp0,tmp1,tmp2,tmp3,tmp4, |
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| 203 | rec.asuInt("FOCUS_ID")); |
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| 204 | in->molecules().getEntry(pksrec.restFreq,stmp0,stmp1, |
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| 205 | rec.asuInt("MOLECULE_ID")); |
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| 206 | in->tcal().getEntry(pksrec.tcalTime, pksrec.tcal, |
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| 207 | rec.asuInt("TCAL_ID")); |
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| 208 | in->weather().getEntry(pksrec.temperature, pksrec.pressure, |
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| 209 | pksrec.humidity, pksrec.windSpeed, |
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| 210 | pksrec.windAz, rec.asuInt("WEATHER_ID")); |
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| 211 | Double pixel = Double(nchan/2); |
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| 212 | pksrec.refFreq = (pixel-crpix)*pksrec.freqInc + crval; |
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| 213 | // ok, now we have nrows for the n polarizations in this table |
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| 214 | polConversion(pksrec.spectra, pksrec.flagged, pksrec.xpol, itable); |
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| 215 | pksrec.tsys = tsysFromTable(itable); |
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| 216 | // dummy data |
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| 217 | uInt npol = spectra.ncolumn(); |
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| 218 | |
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| 219 | pksrec.mjd = rec.asDouble("TIME"); |
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| 220 | pksrec.interval = rec.asDouble("INTERVAL"); |
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| 221 | pksrec.fieldName = rec.asString("FIELDNAME"); |
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| 222 | pksrec.srcName = rec.asString("SRCNAME"); |
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| 223 | pksrec.obsType = hdr.obstype; |
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| 224 | pksrec.bandwidth = nchan * abs(pksrec.freqInc); |
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| 225 | pksrec.azimuth = rec.asFloat("AZIMUTH"); |
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| 226 | pksrec.elevation = rec.asFloat("ELEVATION"); |
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| 227 | pksrec.parAngle = rec.asFloat("PARANGLE"); |
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| 228 | pksrec.refBeam = rec.asInt("REFBEAMNO") + 1; |
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| 229 | pksrec.sigma.resize(npol); |
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| 230 | pksrec.sigma = 0.0f; |
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| 231 | pksrec.calFctr.resize(npol); |
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| 232 | pksrec.calFctr = 0.0f; |
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| 233 | pksrec.baseLin.resize(npol,2); |
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| 234 | pksrec.baseLin = 0.0f; |
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| 235 | pksrec.baseSub.resize(npol,9); |
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| 236 | pksrec.baseSub = 0.0f; |
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| 237 | pksrec.xCalFctr = 0.0; |
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| 238 | |
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| 239 | status = writer_->write(pksrec); |
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| 240 | if ( status ) { |
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| 241 | writer_->close(); |
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| 242 | throw(AipsError("STWriter: Failed to export Scantable.")); |
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| 243 | } |
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| 244 | ++count; |
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| 245 | //++pksrec.IFno; |
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| 246 | ++ifit; |
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| 247 | } |
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| 248 | ++pksrec.cycleNo; |
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| 249 | ++cycit; |
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| 250 | } |
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| 251 | //++pksrec.beamNo; |
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| 252 | ++beamit; |
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| 253 | } |
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| 254 | ++pksrec.scanNo; |
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| 255 | ++scanit; |
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| 256 | } |
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| 257 | ostringstream oss; |
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| 258 | oss << "STWriter: wrote " << count << " rows to " << filename; |
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| 259 | pushLog(String(oss)); |
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| 260 | writer_->close(); |
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| 261 | //if MS2 delete POINTING table exists and copy the one in the keyword |
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| 262 | if ( format_ == "MS2" ) { |
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| 263 | replacePtTab(table, filename); |
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| 264 | } |
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| 265 | return 0; |
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| 266 | } |
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| 267 | |
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| 268 | Vector<Float> STWriter::tsysFromTable(const Table& tab) |
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| 269 | { |
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| 270 | ROArrayColumn<Float> tsysCol(tab, "TSYS"); |
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| 271 | Vector<Float> out(tab.nrow()); |
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| 272 | Vector<Float> tmp; |
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| 273 | for (uInt i=0; i<tab.nrow(); ++i) { |
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| 274 | tmp.resize(); |
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| 275 | tmp = tsysCol(i); |
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| 276 | out[i] = tmp[0]; |
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| 277 | } |
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| 278 | return out; |
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| 279 | } |
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| 280 | |
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| 281 | void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags, |
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| 282 | Vector< Complex > & xpol, const Table & tab ) |
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| 283 | { |
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| 284 | String poltype = tab.keywordSet().asString("POLTYPE"); |
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| 285 | if ( poltype == "stokes") { |
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| 286 | String msg = "poltype = " + poltype + " not yet supported in output."; |
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| 287 | throw(AipsError(msg)); |
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| 288 | } |
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| 289 | ROArrayColumn<Float> specCol(tab, "SPECTRA"); |
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| 290 | ROArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
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| 291 | uInt nchan = specCol(0).nelements(); |
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| 292 | uInt ncol = (tab.nrow()==1 ? 1: 2 ); |
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| 293 | specs.resize(nchan, ncol); |
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| 294 | flags.resize(nchan, ncol); |
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| 295 | // the linears |
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| 296 | for (uInt i=0; i<ncol; ++i) { |
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| 297 | specs.column(i) = specCol(i); |
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| 298 | flags.column(i) = flagCol(i); |
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| 299 | } |
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| 300 | // now the complex if exists |
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| 301 | Bool hasxpol = False; |
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| 302 | xpol.resize(); |
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| 303 | if ( tab.nrow() == 4 ) { |
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| 304 | hasxpol = True; |
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| 305 | xpol.resize(nchan); |
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| 306 | Vector<Float> reals, imags; |
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| 307 | reals = specCol(2); imags = specCol(3); |
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| 308 | for (uInt k=0; k < nchan; ++k) { |
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| 309 | xpol[k] = Complex(reals[k], imags[k]); |
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| 310 | } |
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| 311 | } |
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| 312 | } |
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| 313 | |
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| 314 | // For writing MS data, if there is the reference to |
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| 315 | // original pointing table it replace it by it. |
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| 316 | void STWriter::replacePtTab (const Table& tab, const std::string& fname) |
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| 317 | { |
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| 318 | String oldPtTabName = fname; |
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| 319 | oldPtTabName.append("/POINTING"); |
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| 320 | if ( tab.keywordSet().isDefined("POINTING") ) { |
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| 321 | String PointingTab = tab.keywordSet().asString("POINTING"); |
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| 322 | if ( Table::isReadable(PointingTab) ) { |
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| 323 | Table newPtTab(PointingTab, Table::Old); |
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| 324 | newPtTab.copy(oldPtTabName, Table::New); |
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| 325 | ostringstream oss; |
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| 326 | oss << "STWriter: copied " <<PointingTab << " to " << fname; |
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| 327 | pushLog(String(oss)); |
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| 328 | } |
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| 329 | } |
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| 330 | } |
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| 331 | |
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| 332 | } |
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