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 999 2006-04-06 06:12:55Z 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 "STHeader.h" |
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52 | |
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53 | #include "STWriter.h" |
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54 | |
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55 | using namespace casa; |
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56 | namespace asap { |
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57 | |
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58 | STWriter::STWriter(const std::string &format) |
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59 | { |
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60 | format_ = format; |
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61 | String t(format_); |
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62 | t.upcase(); |
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63 | if (t== "MS2") { |
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64 | writer_ = new PKSMS2writer(); |
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65 | } else if (t== "SDFITS") { |
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66 | writer_ = new PKSSDwriter(); |
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67 | } else if (t== "FITS") { |
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68 | writer_ = 0; |
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69 | } else if (t== "ASCII") { |
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70 | writer_ = 0; |
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71 | } else { |
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72 | throw (AipsError("Unrecognized export format")); |
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73 | } |
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74 | } |
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75 | |
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76 | STWriter::~STWriter() |
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77 | { |
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78 | if (writer_) { |
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79 | delete writer_; |
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80 | } |
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81 | } |
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82 | |
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83 | Int STWriter::setFormat(const std::string &format) |
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84 | { |
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85 | if (format != format_) { |
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86 | if (writer_) delete writer_; |
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87 | } |
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88 | |
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89 | format_ = format; |
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90 | String t(format_); |
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91 | t.upcase(); |
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92 | if (t== "MS2") { |
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93 | writer_ = new PKSMS2writer(); |
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94 | } else if (t== "SDFITS") { |
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95 | writer_ = new PKSSDwriter(); |
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96 | } else if (t== "FITS") { |
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97 | writer_ = 0; |
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98 | } else if (t== "ASCII") { |
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99 | writer_ = 0; |
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100 | } else { |
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101 | throw (AipsError("Unrecognized Format")); |
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102 | } |
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103 | return 0; |
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104 | } |
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105 | |
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106 | Int STWriter::write(const CountedPtr<Scantable> in, |
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107 | const std::string &filename) |
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108 | { |
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109 | |
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110 | // Image FITS |
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111 | |
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112 | if (format_=="FITS") { |
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113 | // Bool verbose = True; |
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114 | // SDFITSImageWriter iw; |
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115 | // if (iw.write(*in, filename, verbose)) { |
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116 | // return 0; |
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117 | // } else { |
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118 | // return 1; |
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119 | // } |
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120 | } else if (format_=="ASCII") { |
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121 | STAsciiWriter iw; |
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122 | if (iw.write(*in, filename)) { |
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123 | return 0; |
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124 | } else { |
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125 | return 1; |
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126 | } |
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127 | } |
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128 | |
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129 | // MS or SDFITS |
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130 | |
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131 | // Extract the header from the table. |
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132 | STHeader hdr = in->getHeader(); |
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133 | const Int nPol = hdr.npol; |
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134 | const Int nChan = hdr.nchan; |
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135 | |
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136 | const Table table = in->table(); |
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137 | // ROArrayColumn<uInt> freqIDCol(table, "FREQ_ID"); |
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138 | // Vector<uInt> freqIDs; |
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139 | |
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140 | // Create the output file and write static data. |
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141 | Int status; |
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142 | Bool havexpol = Bool(in->npol() > 2); |
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143 | status = writer_->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, havexpol); |
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147 | if ( status ) { |
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148 | throw(AipsError("Failed to create output file")); |
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149 | } |
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150 | |
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151 | Double srcVel; |
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152 | |
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153 | String fieldName, srcName, tcalTime; |
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154 | Vector<Float> calFctr, sigma, tcal, tsys; |
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155 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2); |
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156 | Matrix<Float> spectra; |
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157 | Matrix<uChar> flagtra; |
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158 | Complex xCalFctr; |
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159 | Int count = 0; |
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160 | Int scanno = 1; |
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161 | // use spearate iterators to ensure renumbering of all numbers |
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162 | TableIterator scanit(table, "SCANNO"); |
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163 | while (!scanit.pastEnd() ) { |
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164 | Table stable = scanit.table(); |
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165 | TableIterator beamit(stable, "BEAMNO"); |
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166 | Int beamno = 1; |
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167 | while (!beamit.pastEnd() ) { |
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168 | Table btable = beamit.table(); |
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169 | // position only varies by beam |
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170 | MDirection::ScalarColumn dirCol(btable, "DIRECTION"); |
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171 | Vector<Double> direction = dirCol(0).getAngle("rad").getValue(); |
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172 | TableIterator cycit(btable, "CYCLENO"); |
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173 | ROArrayColumn<Double> srateCol(btable, "SCANRATE"); |
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174 | srateCol.get(0, scanRate); |
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175 | ROArrayColumn<Double> spmCol(btable, "SRCPROPERMOTION"); |
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176 | spmCol.get(0, srcPM); |
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177 | ROArrayColumn <Double> sdirCol(btable, "SRCDIRECTION"); |
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178 | sdirCol.get(0, srcDir); |
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179 | ROScalarColumn<Double> svelCol(btable, "SRCVELOCITY"); |
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180 | svelCol.get(0, srcVel); |
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181 | Int cycno = 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 | Int ifno = 1; |
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186 | while (!ifit.pastEnd() ) { |
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187 | Table itable = ifit.table(); |
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188 | TableRow row(itable); |
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189 | // use the first row to fill in all the "metadata" |
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190 | const TableRecord& rec = row.get(0); |
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191 | ROArrayColumn<Float> specCol(itable, "SPECTRA"); |
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192 | uInt nchan = specCol(0).nelements(); |
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193 | Double cdelt,crval,crpix, restfreq; |
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194 | Float focusAxi, focusTan, focusRot, |
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195 | temperature, pressure, humidity, windSpeed, windAz; |
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196 | Float tmp0,tmp1,tmp2,tmp3,tmp4; |
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197 | Vector<Float> tcalval; |
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198 | String stmp0,stmp1, tcalt; |
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199 | in->frequencies().getEntry(crpix,crval,cdelt, rec.asuInt("FREQ_ID")); |
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200 | in->focus().getEntry(focusAxi, focusTan, focusRot, |
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201 | tmp0,tmp1,tmp2,tmp3,tmp4, |
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202 | rec.asuInt("FOCUS_ID")); |
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203 | in->molecules().getEntry(restfreq,stmp0,stmp1,rec.asuInt("MOLECULE_ID")); |
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204 | in->tcal().getEntry(tcalt,tcalval,rec.asuInt("TCAL_ID")); |
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205 | in->weather().getEntry(temperature, pressure, humidity, |
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206 | windSpeed, windAz, |
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207 | rec.asuInt("WEATHER_ID")); |
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208 | Double pixel = Double(nchan/2); |
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209 | Double refFreqNew = (pixel-crpix)*cdelt + crval; |
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210 | // ok, now we have nrows for the n polarizations in this table |
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211 | Matrix<Float> specs; |
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212 | Matrix<uChar> flags; |
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213 | Vector<Complex> xpol; |
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214 | polConversion(specs, flags, xpol, itable); |
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215 | Vector<Float> tsys = tsysFromTable(itable); |
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216 | // dummy data |
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217 | uInt npol = specs.ncolumn(); |
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218 | |
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219 | Matrix<Float> baseLin(npol,2, 0.0f); |
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220 | Matrix<Float> baseSub(npol,9, 0.0f); |
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221 | Complex xCalFctr; |
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222 | Vector<Double> scanRate(2, 0.0); |
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223 | Vector<Float> sigma(npol, 0.0f); |
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224 | Vector<Float> calFctr(npol, 0.0f); |
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225 | status = writer_->write(scanno, cycno, rec.asDouble("TIME"), |
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226 | rec.asDouble("INTERVAL"), |
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227 | rec.asString("FIELDNAME"), |
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228 | rec.asString("SRCNAME"), |
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229 | srcDir, srcPM, srcVel, |
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230 | ifno, |
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231 | refFreqNew, nchan*abs(cdelt), cdelt, |
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232 | restfreq, |
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233 | tcal, |
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234 | tcalt, |
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235 | rec.asFloat("AZIMUTH"), |
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236 | rec.asFloat("ELEVATION"), |
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237 | rec.asFloat("PARANGLE"), |
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238 | focusAxi, focusTan, focusRot, |
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239 | temperature, |
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240 | pressure, humidity, windSpeed, windAz, |
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241 | rec.asInt("REFBEAMNO")+1, beamno, |
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242 | direction, |
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243 | scanRate, |
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244 | tsys, |
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245 | sigma, calFctr,// not in scantable |
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246 | baseLin, baseSub,// not in scantable |
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247 | specs, flags, |
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248 | xCalFctr,// |
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249 | xpol); |
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250 | if ( status ) { |
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251 | writer_->close(); |
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252 | throw(AipsError("STWriter: Failed to export Scantable.")); |
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253 | } |
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254 | ++count; |
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255 | ++ifno; |
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256 | ++ifit; |
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257 | } |
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258 | ++cycno; |
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259 | ++cycit; |
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260 | } |
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261 | ++beamno; |
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262 | ++beamit; |
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263 | } |
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264 | ++scanno; |
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265 | ++scanit; |
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266 | } |
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267 | ostringstream oss; |
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268 | oss << "STWriter: wrote " << count << " rows to " << filename; |
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269 | pushLog(String(oss)); |
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270 | writer_->close(); |
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271 | |
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272 | return 0; |
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273 | } |
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274 | |
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275 | Vector<Float> STWriter::tsysFromTable(const Table& tab) |
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276 | { |
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277 | ROArrayColumn<Float> tsysCol(tab, "TSYS"); |
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278 | Vector<Float> out(tab.nrow()); |
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279 | Vector<Float> tmp; |
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280 | for (uInt i=0; i<tab.nrow(); ++i) { |
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281 | tmp.resize(); |
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282 | tmp = tsysCol(i); |
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283 | out[i] = tmp[0]; |
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284 | } |
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285 | return out; |
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286 | } |
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287 | |
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288 | void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags, |
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289 | Vector< Complex > & xpol, const Table & tab ) |
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290 | { |
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291 | String poltype = tab.keywordSet().asString("POLTYPE"); |
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292 | if ( poltype != "linear") { |
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293 | String msg = "poltype = " + poltype + " not yet supported in output."; |
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294 | throw(AipsError(msg)); |
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295 | } |
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296 | ROArrayColumn<Float> specCol(tab, "SPECTRA"); |
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297 | ROArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
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298 | uInt nchan = specCol(0).nelements(); |
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299 | uInt ncol = (tab.nrow()==1 ? 1: 2 ); |
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300 | specs.resize(nchan, ncol); |
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301 | flags.resize(nchan, ncol); |
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302 | // the linears |
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303 | for (uInt i=0; i<ncol; ++i) { |
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304 | specs.column(i) = specCol(i); |
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305 | flags.column(i) = flagCol(i); |
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306 | } |
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307 | // now the complex if exists |
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308 | Bool hasxpol = False; |
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309 | xpol.resize(); |
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310 | if ( tab.nrow() == 4 ) { |
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311 | hasxpol = True; |
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312 | xpol.resize(nchan); |
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313 | Vector<Float> reals, imags; |
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314 | reals = specCol(2); imags = specCol(3); |
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315 | for (uInt k=0; k < nchan; ++k) { |
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316 | xpol[k] = Complex(reals[k], imags[k]); |
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317 | } |
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318 | } |
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319 | } |
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320 | |
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321 | |
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322 | } |
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