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 1296 2006-11-06 22:39:39Z 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== "ASCII") { |
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68 | writer_ = 0; |
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69 | } else { |
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70 | throw (AipsError("Unrecognized export format")); |
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71 | } |
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72 | } |
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73 | |
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74 | STWriter::~STWriter() |
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75 | { |
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76 | if (writer_) { |
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77 | delete writer_; |
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78 | } |
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79 | } |
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80 | |
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81 | Int STWriter::setFormat(const std::string &format) |
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82 | { |
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83 | if (format != format_) { |
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84 | if (writer_) delete writer_; |
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85 | } |
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86 | |
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87 | format_ = format; |
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88 | String t(format_); |
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89 | t.upcase(); |
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90 | if (t== "MS2") { |
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91 | writer_ = new PKSMS2writer(); |
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92 | } else if (t== "SDFITS") { |
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93 | writer_ = new PKSSDwriter(); |
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94 | } else if (t== "ASCII") { |
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95 | writer_ = 0; |
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96 | } else { |
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97 | throw (AipsError("Unrecognized Format")); |
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98 | } |
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99 | return 0; |
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100 | } |
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101 | |
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102 | Int STWriter::write(const CountedPtr<Scantable> in, |
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103 | const std::string &filename) |
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104 | { |
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105 | |
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106 | if (format_=="ASCII") { |
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107 | STAsciiWriter iw; |
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108 | if (iw.write(*in, filename)) { |
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109 | return 0; |
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110 | } else { |
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111 | return 1; |
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112 | } |
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113 | } |
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114 | |
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115 | // MS or SDFITS |
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116 | |
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117 | // Extract the header from the table. |
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118 | STHeader hdr = in->getHeader(); |
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119 | //const Int nPol = hdr.npol; |
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120 | //const Int nChan = hdr.nchan; |
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121 | std::vector<uint> ifs = in->getIFNos(); |
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122 | int nIF = in->nif();//ifs.size(); |
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123 | Vector<uInt> nPol(nIF),nChan(nIF); |
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124 | Vector<Bool> havexpol(nIF); |
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125 | nPol = 0;nChan = 0; havexpol = False; |
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126 | for (uint i=0;i<ifs.size();++i) { |
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127 | nPol(ifs[i]) = in->npol(); |
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128 | nChan(ifs[i]) = in->nchan(ifs[i]); |
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129 | havexpol(ifs[i]) = nPol(ifs[i]) > 2; |
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130 | } |
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131 | |
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132 | const Table table = in->table(); |
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133 | |
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134 | // Create the output file and write static data. |
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135 | Int status; |
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136 | status = writer_->create(String(filename), hdr.observer, hdr.project, |
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137 | hdr.antennaname, hdr.antennaposition, |
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138 | hdr.obstype, hdr.equinox, hdr.freqref, |
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139 | nChan, nPol, havexpol, False); |
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140 | if ( status ) { |
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141 | throw(AipsError("Failed to create output file")); |
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142 | } |
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143 | |
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144 | Double srcVel; |
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145 | |
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146 | String fieldName, srcName, tcalTime; |
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147 | Vector<Float> calFctr, sigma, tcal, tsys; |
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148 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2); |
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149 | Matrix<Float> spectra; |
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150 | Matrix<uChar> flagtra; |
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151 | Complex xCalFctr; |
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152 | Int count = 0; |
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153 | Int scanno = 1; |
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154 | // use spearate iterators to ensure renumbering of all numbers |
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155 | TableIterator scanit(table, "SCANNO"); |
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156 | while (!scanit.pastEnd() ) { |
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157 | Table stable = scanit.table(); |
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158 | TableIterator beamit(stable, "BEAMNO"); |
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159 | Int beamno = 1; |
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160 | while (!beamit.pastEnd() ) { |
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161 | Table btable = beamit.table(); |
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162 | // position only varies by beam |
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163 | MDirection::ScalarColumn dirCol(btable, "DIRECTION"); |
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164 | Vector<Double> direction = dirCol(0).getAngle("rad").getValue(); |
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165 | TableIterator cycit(btable, "CYCLENO"); |
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166 | ROArrayColumn<Double> srateCol(btable, "SCANRATE"); |
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167 | srateCol.get(0, scanRate); |
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168 | ROArrayColumn<Double> spmCol(btable, "SRCPROPERMOTION"); |
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169 | spmCol.get(0, srcPM); |
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170 | ROArrayColumn <Double> sdirCol(btable, "SRCDIRECTION"); |
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171 | sdirCol.get(0, srcDir); |
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172 | ROScalarColumn<Double> svelCol(btable, "SRCVELOCITY"); |
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173 | svelCol.get(0, srcVel); |
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174 | ROScalarColumn<uInt> bCol(btable, "BEAMNO"); |
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175 | beamno = bCol(0)+1; |
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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 | TableIterator ifit(ctable, "IFNO"); |
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180 | Int ifno = 1; |
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181 | while (!ifit.pastEnd() ) { |
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182 | Table itable = ifit.table(); |
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183 | TableRow row(itable); |
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184 | // use the first row to fill in all the "metadata" |
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185 | const TableRecord& rec = row.get(0); |
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186 | ROArrayColumn<Float> specCol(itable, "SPECTRA"); |
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187 | ifno = rec.asuInt("IFNO")+1; |
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188 | uInt nchan = specCol(0).nelements(); |
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189 | Double cdelt,crval,crpix, restfreq; |
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190 | Float focusAxi, focusTan, focusRot, |
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191 | temperature, pressure, humidity, windSpeed, windAz; |
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192 | Float tmp0,tmp1,tmp2,tmp3,tmp4; |
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193 | Vector<Float> tcalval; |
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194 | String stmp0,stmp1, tcalt; |
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195 | in->frequencies().getEntry(crpix,crval,cdelt, rec.asuInt("FREQ_ID")); |
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196 | in->focus().getEntry(focusAxi, focusTan, focusRot, |
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197 | tmp0,tmp1,tmp2,tmp3,tmp4, |
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198 | rec.asuInt("FOCUS_ID")); |
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199 | in->molecules().getEntry(restfreq,stmp0,stmp1,rec.asuInt("MOLECULE_ID")); |
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200 | in->tcal().getEntry(tcalt,tcalval,rec.asuInt("TCAL_ID")); |
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201 | in->weather().getEntry(temperature, pressure, humidity, |
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202 | windSpeed, windAz, |
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203 | rec.asuInt("WEATHER_ID")); |
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204 | Double pixel = Double(nchan/2); |
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205 | Double refFreqNew = (pixel-crpix)*cdelt + crval; |
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206 | // ok, now we have nrows for the n polarizations in this table |
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207 | Matrix<Float> specs; |
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208 | Matrix<uChar> flags; |
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209 | Vector<Complex> xpol; |
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210 | polConversion(specs, flags, xpol, itable); |
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211 | Vector<Float> tsys = tsysFromTable(itable); |
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212 | // dummy data |
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213 | uInt npol = specs.ncolumn(); |
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214 | |
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215 | Matrix<Float> baseLin(npol,2, 0.0f); |
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216 | Matrix<Float> baseSub(npol,9, 0.0f); |
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217 | Complex xCalFctr; |
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218 | Vector<Double> scanRate(2, 0.0); |
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219 | Vector<Float> sigma(npol, 0.0f); |
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220 | Vector<Float> calFctr(npol, 0.0f); |
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221 | status = writer_->write(scanno, cycno, rec.asDouble("TIME"), |
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222 | rec.asDouble("INTERVAL"), |
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223 | rec.asString("FIELDNAME"), |
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224 | rec.asString("SRCNAME"), |
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225 | srcDir, srcPM, srcVel,hdr.obstype, |
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226 | ifno, |
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227 | refFreqNew, nchan*abs(cdelt), cdelt, |
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228 | restfreq, |
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229 | tcal, |
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230 | tcalt, |
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231 | rec.asFloat("AZIMUTH"), |
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232 | rec.asFloat("ELEVATION"), |
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233 | rec.asFloat("PARANGLE"), |
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234 | focusAxi, focusTan, focusRot, |
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235 | temperature, |
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236 | pressure, humidity, windSpeed, windAz, |
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237 | rec.asInt("REFBEAMNO")+1, beamno, |
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238 | direction, |
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239 | scanRate, |
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240 | tsys, |
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241 | sigma, calFctr,// not in scantable |
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242 | baseLin, baseSub,// not in scantable |
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243 | specs, flags, |
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244 | xCalFctr,// |
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245 | xpol); |
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246 | if ( status ) { |
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247 | writer_->close(); |
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248 | throw(AipsError("STWriter: Failed to export Scantable.")); |
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249 | } |
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250 | ++count; |
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251 | //++ifno; |
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252 | ++ifit; |
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253 | } |
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254 | ++cycno; |
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255 | ++cycit; |
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256 | } |
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257 | //++beamno; |
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258 | ++beamit; |
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259 | } |
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260 | ++scanno; |
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261 | ++scanit; |
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262 | } |
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263 | ostringstream oss; |
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264 | oss << "STWriter: wrote " << count << " rows to " << filename; |
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265 | pushLog(String(oss)); |
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266 | writer_->close(); |
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267 | |
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268 | return 0; |
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269 | } |
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270 | |
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271 | Vector<Float> STWriter::tsysFromTable(const Table& tab) |
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272 | { |
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273 | ROArrayColumn<Float> tsysCol(tab, "TSYS"); |
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274 | Vector<Float> out(tab.nrow()); |
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275 | Vector<Float> tmp; |
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276 | for (uInt i=0; i<tab.nrow(); ++i) { |
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277 | tmp.resize(); |
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278 | tmp = tsysCol(i); |
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279 | out[i] = tmp[0]; |
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280 | } |
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281 | return out; |
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282 | } |
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283 | |
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284 | void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags, |
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285 | Vector< Complex > & xpol, const Table & tab ) |
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286 | { |
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287 | String poltype = tab.keywordSet().asString("POLTYPE"); |
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288 | if ( poltype == "stokes") { |
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289 | String msg = "poltype = " + poltype + " not yet supported in output."; |
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290 | throw(AipsError(msg)); |
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291 | } |
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292 | ROArrayColumn<Float> specCol(tab, "SPECTRA"); |
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293 | ROArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
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294 | uInt nchan = specCol(0).nelements(); |
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295 | uInt ncol = (tab.nrow()==1 ? 1: 2 ); |
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296 | specs.resize(nchan, ncol); |
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297 | flags.resize(nchan, ncol); |
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298 | // the linears |
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299 | for (uInt i=0; i<ncol; ++i) { |
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300 | specs.column(i) = specCol(i); |
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301 | flags.column(i) = flagCol(i); |
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302 | } |
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303 | // now the complex if exists |
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304 | Bool hasxpol = False; |
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305 | xpol.resize(); |
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306 | if ( tab.nrow() == 4 ) { |
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307 | hasxpol = True; |
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308 | xpol.resize(nchan); |
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309 | Vector<Float> reals, imags; |
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310 | reals = specCol(2); imags = specCol(3); |
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311 | for (uInt k=0; k < nchan; ++k) { |
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312 | xpol[k] = Complex(reals[k], imags[k]); |
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313 | } |
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314 | } |
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315 | } |
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316 | |
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317 | |
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318 | } |
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