| 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 827 2006-02-17 04:01:57Z mar637 $
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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/PKSMS2writer.h>
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| 42 | #include <atnf/PKSIO/PKSSDwriter.h>
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| 43 |
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| 44 | #include <tables/Tables/Table.h>
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| 45 | #include <tables/Tables/TableIter.h>
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| 46 | #include <tables/Tables/TableRow.h>
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| 47 | #include <tables/Tables/ArrayColumn.h>
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| 48 |
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| 49 | //#include "SDFITSImageWriter.h"
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| 50 | //#include "STAsciiWriter.h"
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| 51 | //#include "SDPol.h"
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| 52 | #include "SDContainer.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 | cFormat = format;
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| 62 | String t(cFormat);
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| 63 | t.upcase();
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| 64 | if (t== "MS2") {
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| 65 | cWriter = new PKSMS2writer();
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| 66 | } else if (t== "SDFITS") {
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| 67 | cWriter = new PKSSDwriter();
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| 68 | } else if (t== "FITS") {
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| 69 | cWriter = 0;
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| 70 | } else if (t== "ASCII") {
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| 71 | cWriter = 0;
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| 72 | } else {
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| 73 | throw (AipsError("Unrecognized Format"));
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| 74 | }
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| 75 | }
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| 76 |
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| 77 | STWriter::~STWriter()
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| 78 | {
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| 79 | if (cWriter) {
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| 80 | delete cWriter;
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| 81 | }
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| 82 | }
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| 83 |
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| 84 | Int STWriter::setFormat(const std::string &format)
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| 85 | {
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| 86 | if (format != cFormat) {
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| 87 | if (cWriter) delete cWriter;
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| 88 | }
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| 89 |
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| 90 | cFormat = format;
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| 91 | String t(cFormat);
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| 92 | t.upcase();
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| 93 | if (t== "MS2") {
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| 94 | cWriter = new PKSMS2writer();
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| 95 | } else if (t== "SDFITS") {
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| 96 | cWriter = new PKSSDwriter();
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| 97 | } else if (t== "FITS") {
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| 98 | cWriter = 0;
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| 99 | } else if (t== "ASCII") {
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| 100 | cWriter = 0;
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| 101 | } else {
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| 102 | throw (AipsError("Unrecognized Format"));
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| 103 | }
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| 104 | return 0;
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| 105 | }
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| 106 |
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| 107 | Int STWriter::write(const CountedPtr<Scantable> in,
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| 108 | const std::string &filename)
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| 109 | {
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| 110 |
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| 111 | // Image FITS
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| 112 |
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| 113 | if (cFormat=="FITS") {
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| 114 | // Bool verbose = True;
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| 115 | // SDFITSImageWriter iw;
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| 116 | // if (iw.write(*in, filename, verbose)) {
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| 117 | // return 0;
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| 118 | // } else {
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| 119 | // return 1;
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| 120 | // }
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| 121 | } else if (cFormat=="ASCII") {
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| 122 | /*SDAsciiWriter iw;
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| 123 | if (iw.write(*in, filename)) {
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| 124 | return 0;
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| 125 | } else {
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| 126 | return 1;
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| 127 | }*/
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| 128 | }
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| 129 |
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| 130 | // MS or SDFITS
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| 131 |
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| 132 | // Extract the header from the table.
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| 133 | SDHeader hdr = in->getSDHeader();
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| 134 | const Int nPol = hdr.npol;
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| 135 | const Int nChan = hdr.nchan;
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| 136 |
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| 137 | const Table table = in->table();
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| 138 | // ROArrayColumn<uInt> freqIDCol(table, "FREQ_ID");
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| 139 | // Vector<uInt> freqIDs;
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| 140 |
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| 141 | // Create the output file and write static data.
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| 142 | Int status;
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| 143 | if (status = cWriter->create(filename, hdr.observer, hdr.project,
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| 144 | hdr.antennaname, hdr.antennaposition,
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| 145 | hdr.obstype, hdr.equinox, hdr.freqref,
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| 146 | nChan, nPol, False, False)) {
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| 147 | throw(AipsError("Failed to create output file"));
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| 148 | }
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| 149 |
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| 150 | Double srcVel = 0.0;
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| 151 |
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| 152 | String fieldName, srcName, tcalTime;
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| 153 | Vector<Float> calFctr, sigma, tcal, tsys;
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| 154 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2,0.0);
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| 155 | Matrix<Float> spectra;
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| 156 | Matrix<uChar> flagtra;
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| 157 | Complex xCalFctr;
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| 158 | Int count = 0;
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| 159 | Int scanno = 1;
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| 160 | // use spearate iterators to ensure renumbering of all numbers
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| 161 | TableIterator scanit(table, "SCANNO");
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| 162 | while (!scanit.pastEnd() ) {
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| 163 | Table stable = scanit.table();
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| 164 | TableIterator beamit(table, "BEAMNO");
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| 165 | Int beamno = 1;
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| 166 | while (!beamit.pastEnd() ) {
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| 167 | Table btable = beamit.table();
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| 168 | // position only varies by beam
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| 169 | MDirection::ScalarColumn dirCol(btable, "DIRECTION");
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| 170 | Vector<Double> direction = dirCol(0).getAngle("rad").getValue();
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| 171 | TableIterator ifit(btable, "IFNO");
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| 172 | Int ifno = 1;
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| 173 | while (!ifit.pastEnd() ) {
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| 174 | Table itable = ifit.table();
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| 175 | TableIterator cycit(itable, "CYCLENO");
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| 176 | Int cycno = 1;
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| 177 | while (!cycit.pastEnd() ) {
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| 178 | Table ctable = cycit.table();
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| 179 | TableRow row(ctable);
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| 180 | // use the first row to fill in all the "metadata"
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| 181 | const TableRecord& rec = row.get(0);
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| 182 | ROArrayColumn<Float> specCol(ctable, "SPECTRA");
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| 183 | uInt nchan = specCol(0).nelements();
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| 184 | Double cdelt,crval,crpix, restfreq;
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| 185 | Float focusAxi, focusTan, focusRot,
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| 186 | temperature, pressure, humidity, windSpeed, windAz;
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| 187 | Vector<Float> tcalval;
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| 188 | String tmp,tmp2, tcalt;
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| 189 | in->frequencies().getEntry(crpix,crval,cdelt, rec.asuInt("FREQ_ID"));
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| 190 | in->molecules().getEntry(restfreq,tmp,tmp2,rec.asuInt("RESTFREQ_ID"));
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| 191 | in->tcal().getEntry(tcalt,tcalval,rec.asuInt("TCAL_ID"));
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| 192 | in->weather().getEntry(temperature, pressure, humidity,
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| 193 | windSpeed, windAz,
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| 194 | rec.asuInt("WEATHER_ID"));
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| 195 | Double pixel = Double(nchan/2);
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| 196 | Double refFreqNew = (pixel-crpix)*cdelt + crval;
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| 197 | // ok, now we have nrows for the n polarizations in this table
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| 198 | Matrix<Float> specs;
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| 199 | Matrix<uChar> flags;
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| 200 | Vector<Complex> xpol;
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| 201 | polConversion(specs, flags, xpol, ctable);
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| 202 | Vector<Float> tsys = tsysFromTable(ctable);
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| 203 | // dummy data
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| 204 | uInt npol = specs.ncolumn();
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| 205 | Matrix<Float> baseLin(npol,2, 0.0f);
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| 206 | Matrix<Float> baseSub(npol,9, 0.0f);
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| 207 | Complex xCalFctr;
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| 208 | Vector<Double> scanRate(2, 0.0);
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| 209 | Vector<Float> sigma(npol, 0.0f);
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| 210 | Vector<Float> calFctr(npol, 0.0f);
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| 211 |
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| 212 |
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| 213 | if (status = cWriter->write(scanno, cycno, rec.asDouble("TIME"),
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| 214 | rec.asDouble("INTERVAL"),
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| 215 | rec.asString("FIELDNAME"),
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| 216 | rec.asString("SRCNAME"),
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| 217 | direction,
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| 218 | srcPM, srcVel, // not in scantable yet
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| 219 | ifno,
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| 220 | refFreqNew, nchan*abs(cdelt), cdelt,
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| 221 | restfreq,
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| 222 | tcal,
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| 223 | tcalt,
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| 224 | rec.asFloat("AZIMUTH"),
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| 225 | rec.asFloat("ELEVATION"),
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| 226 | rec.asFloat("PARANGLE"),
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| 227 | focusAxi, focusTan, focusRot,//
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| 228 | temperature,
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| 229 | pressure, humidity, windSpeed, windAz,
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| 230 | rec.asInt("REFBEAM"), beamno,
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| 231 | direction,
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| 232 | scanRate,// not in scantable
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| 233 | tsys,
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| 234 | sigma, calFctr,// not in scantable
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| 235 | baseLin, baseSub,// not in scantable
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| 236 | specs, flags,
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| 237 | xCalFctr,//
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| 238 | xpol)
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| 239 | ) {
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| 240 | cerr << "Error writing output file." << endl;
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| 241 | return 1;
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| 242 | }
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| 243 |
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| 244 | ++cycno;
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| 245 | ++cycit;
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| 246 | }
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| 247 | ++ifno;
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| 248 | ++ifit;
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| 249 | }
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| 250 | ++beamno;
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| 251 | ++beamit;
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| 252 | }
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| 253 | ++scanno;
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| 254 | ++scanit;
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| 255 | }
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| 256 | ostringstream oss;
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| 257 | oss << "STWriter: wrote " << count << " rows to " << filename << endl;
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| 258 | pushLog(String(oss));
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| 259 | cWriter->close();
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| 260 |
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| 261 | return 0;
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| 262 | }
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| 263 |
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| 264 | Vector<Float> STWriter::tsysFromTable(const Table& tab)
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| 265 | {
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| 266 | ROArrayColumn<Float> tsysCol(tab, "TSYS");
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| 267 | Vector<Float> out(tab.nrow());
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| 268 | Vector<Float> tmp;
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| 269 | for (uInt i=0; i<tab.nrow(); ++i) {
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| 270 | tmp = tsysCol(i);
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| 271 | out[i] = tmp[0];
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| 272 | }
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| 273 | }
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| 274 |
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| 275 | void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags,
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| 276 | Vector< Complex > & xpol, const Table & tab )
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| 277 | {
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| 278 | TableRow row(tab);
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| 279 | String poltype = tab.keywordSet().asString("POLTYPE");
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| 280 | if ( poltype != "linear")
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| 281 | String msg = "poltype = " + poltype + " not yet supported in output.";
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| 282 | throw(AipsError("msg"));
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| 283 | // use the first row to fill in all the "metadata"
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| 284 | const TableRecord& rec = row.get(0);
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| 285 | ROArrayColumn<Float> specCol(tab, "SPECTRA");
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| 286 | ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
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| 287 | uInt nchan = specCol(0).nelements();
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| 288 | uInt ncols = (tab.nrow()==1 ? 1: 2 );
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| 289 | specs.resize(nchan, ncols);
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| 290 | flags.resize(nchan, ncols);
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| 291 | // the linears
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| 292 | for (uInt i=0; i<ncols; ++i) {
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| 293 | specs.column(i) = specCol(i);
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| 294 | flags.column(i) = flagCol(i);
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| 295 | }
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| 296 | // now the complex if exists
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| 297 | Bool hasxpol = False;
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| 298 | xpol.resize();
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| 299 | if ( tab.nrow() == 4 ) {
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| 300 | hasxpol = True;
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| 301 | xpol.resize(nchan);
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| 302 | Vector<Float> reals, imags;
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| 303 | reals = specCol(2); imags = specCol(3);
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| 304 | for (uInt k=0; k < nchan; ++k) {
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| 305 | xpol[k] = Complex(reals[k], imags[k]);
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| 306 | }
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| 307 | }
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| 308 | }
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| 309 |
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| 310 |
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| 311 | }
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