1 | //#---------------------------------------------------------------------------
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2 | //# SDWriter.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: SDWriter.cc 450 2005-02-15 09:06:11Z kil064 $
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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.h>
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36 | #include <casa/BasicSL/Complex.h>
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37 | #include <casa/Utilities/CountedPtr.h>
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38 |
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39 | #include <atnf/PKSIO/PKSMS2writer.h>
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40 | #include <atnf/PKSIO/PKSSDwriter.h>
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41 |
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42 | #include <tables/Tables/ArrayColumn.h>
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43 |
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44 |
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45 | #include "SDContainer.h"
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46 | #include "SDMemTable.h"
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47 | #include "SDWriter.h"
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48 | #include "SDFITSImageWriter.h"
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49 | #include "SDAsciiWriter.h"
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50 |
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51 | using namespace casa;
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52 | using namespace asap;
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53 |
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54 | //--------------------------------------------------------- SDWriter::SDWriter
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55 |
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56 | // Default constructor.
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57 |
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58 | SDWriter::SDWriter(const std::string &format)
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59 | {
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60 | cFormat = format;
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61 | //
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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 | //-------------------------------------------------------- SDWriter::~SDWriter
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78 |
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79 | // Destructor.
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80 |
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81 | SDWriter::~SDWriter()
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82 | {
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83 | if (cWriter) {
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84 | delete cWriter;
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85 | }
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86 | }
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87 |
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88 | //-------------------------------------------------------- SDWriter::setFormat
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89 |
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90 | // Reset the output format.
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91 |
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92 | Int SDWriter::setFormat(const std::string &format)
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93 | {
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94 | if (format != cFormat) {
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95 | if (cWriter) delete cWriter;
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96 | }
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97 | //
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98 | cFormat = format;
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99 | String t(cFormat);
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100 | t.upcase();
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101 | if (t== "MS2") {
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102 | cWriter = new PKSMS2writer();
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103 | } else if (t== "SDFITS") {
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104 | cWriter = new PKSSDwriter();
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105 | } else if (t== "FITS") {
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106 | cWriter = 0;
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107 | } else if (t== "ASCII") {
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108 | cWriter = 0;
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109 | } else {
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110 | throw (AipsError("Unrecognized Format"));
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111 | }
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112 | return 0;
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113 | }
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114 |
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115 | //------------------------------------------------------------ SDWriter::write
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116 |
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117 | // Write an SDMemTable to file in the desired format, closing the file when
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118 | // finished.
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119 |
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120 | Int SDWriter::write(const CountedPtr<SDMemTable> in,
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121 | const std::string &filename, Bool toStokes)
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122 | {
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123 |
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124 | // Image FITS
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125 |
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126 | if (cFormat=="FITS") {
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127 | Bool verbose = True;
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128 | SDFITSImageWriter iw;
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129 | if (iw.write(*in, filename, verbose, toStokes)) {
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130 | return 0;
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131 | } else {
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132 | return 1;
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133 | }
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134 | } else if (cFormat=="ASCII") {
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135 | SDAsciiWriter iw;
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136 | if (iw.write(*in, filename, toStokes)) {
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137 | return 0;
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138 | } else {
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139 | return 1;
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140 | }
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141 | }
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142 |
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143 | // MS or SDFITS
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144 |
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145 | // Extract the header from the table.
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146 | SDHeader hdr = in->getSDHeader();
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147 | const Int nPol = hdr.npol;
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148 | const Int nChan = hdr.nchan;
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149 | if (toStokes) {
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150 | cerr << "Stokes conversion not yet available with SDFITS or MS" << endl;
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151 | }
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152 |
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153 | // Get Freq table
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154 |
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155 | SDFrequencyTable sdft = in->getSDFreqTable();
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156 | Vector<Double> restFreqs;
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157 | String restFreqUnit;
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158 | sdft.restFrequencies(restFreqs, restFreqUnit);
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159 | Double restFreq = 0.0;
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160 | if (restFreqs.nelements()>0) {
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161 | Quantum<Double> rF(restFreqs(0), Unit(restFreqUnit));
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162 | restFreq = rF.getValue(Unit("Hz"));
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163 | }
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164 |
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165 | // Table columns
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166 |
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167 | const Table table = in->table();
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168 | ROArrayColumn<uInt> freqIDCol(table, "FREQID");
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169 | Vector<uInt> freqIDs;
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170 |
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171 | // Create the output file and write static data.
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172 | Int status;
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173 | if (status = cWriter->create(filename, hdr.observer, hdr.project,
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174 | hdr.antennaname, hdr.antennaposition,
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175 | hdr.obstype, hdr.equinox, hdr.freqref,
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176 | nChan, nPol, False, False)) {
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177 | cerr << "Failed to create output file." << endl;
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178 | return 1;
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179 | }
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180 |
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181 | Int scanNo = -1;
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182 | Int cycleNo;
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183 | Double mjd0 = 0.0;
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184 |
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185 | Int count = 0;
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186 | for (Int iRow = 0; iRow < in->nRow(); iRow++) {
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187 | // Extract the next integration from the table.
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188 | SDContainer sd = in->getSDContainer(iRow);
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189 | if (sd.scanid != scanNo) {
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190 | scanNo = sd.scanid;
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191 | mjd0 = sd.timestamp;
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192 | cycleNo = 1;
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193 | } else if (fabs(sd.timestamp-mjd0) > sd.interval) {
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194 | cycleNo++;
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195 | }
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196 |
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197 | // Get FreqID vector
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198 | freqIDCol.get(iRow, freqIDs);
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199 |
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200 | // Write it out beam by beam.
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201 | for (Int iBeam = 0; iBeam < hdr.nbeam; iBeam++) {
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202 |
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203 | // Write it out IF by IF.
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204 | for (Int iIF = 0; iIF < hdr.nif; iIF++) {
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205 | uInt freqID = freqIDs(iIF);
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206 |
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207 | // None of these are stored in SDMemTable by SDReader.
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208 | //String fieldName = "";
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209 | //Vector<Double> srcDir(2, 0.0);
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210 | Vector<Double> srcPM(2, 0.0);
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211 | Double srcVel = 0.0;
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212 |
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213 | // The writer will assume refPix = nChan/2 (0-rel). So recompute
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214 | // the frequency at this location.
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215 |
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216 | Double cdelt = sdft.increment(freqID);
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217 | Double crval = sdft.referenceValue(freqID);
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218 | Double crpix = sdft.referencePixel(freqID);
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219 | Double pixel = nChan/2;
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220 | Double refFreqNew = (pixel-crpix)*cdelt + crval;
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221 | //
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222 | //Vector<Float> tcal(2, 0.0f);
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223 | //String tcalTime = "";
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224 | //Float azimuth = 0.0f;
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225 | //Float elevation = 0.0f;
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226 | //Float parAngle = 0.0f;
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227 | Float focusAxi = 0.0f;
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228 | Float focusTan = 0.0f;
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229 | Float focusRot = 0.0f;
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230 | Float temperature = 0.0f;
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231 | Float pressure = 0.0f;
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232 | Float humidity = 0.0f;
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233 | Float windSpeed = 0.0f;
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234 | Float windAz = 0.0f;
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235 | //Int refBeam = 0;
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236 | //Vector<Double> direction(2, 0.0);
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237 | Vector<Double> scanRate(2, 0.0);
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238 | Vector<Float> sigma(nPol, 0.0f);
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239 | Vector<Float> calFctr(nPol, 0.0f);
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240 | Matrix<Float> baseLin(nPol,2, 0.0f);
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241 | Matrix<Float> baseSub(nPol,9, 0.0f);
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242 | Complex xCalFctr;
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243 | Vector<Complex> xPol;
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244 | //
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245 | if (status = cWriter->write(sd.scanid, cycleNo, sd.timestamp,
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246 | sd.interval, sd.fieldname, sd.sourcename,
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247 | sd.getDirection(iBeam),
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248 | srcPM, srcVel, iIF+1, refFreqNew,
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249 | nChan*abs(cdelt), cdelt, restFreq, sd.tcal,
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250 | sd.tcaltime, sd.azimuth, sd.elevation,
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251 | sd.parangle,
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252 | focusAxi, focusTan, focusRot, temperature,
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253 | pressure, humidity, windSpeed, windAz,
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254 | sd.refbeam, iBeam+1,
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255 | sd.getDirection(iBeam),
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256 | scanRate,
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257 | sd.getTsys(iBeam, iIF), sigma, calFctr,
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258 | baseLin, baseSub,
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259 | sd.getSpectrum(iBeam, iIF),
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260 | sd.getFlags(iBeam, iIF),
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261 | xCalFctr, xPol)) {
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262 | cerr << "Error writing output file." << endl;
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263 | return 1;
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264 | }
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265 |
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266 | count++;
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267 | }
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268 | }
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269 | }
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270 |
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271 | cout << "SDWriter: wrote " << count << " rows to " << filename << endl;
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272 | cWriter->close();
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273 |
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274 | return 0;
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275 | }
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