1 | // |
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2 | // C++ Implementation: STFiller |
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3 | // |
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4 | // Description: |
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5 | // |
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6 | // |
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7 | // Author: Malte Marquarding <asap@atnf.csiro.au>, (C) 2006 |
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8 | // |
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9 | // Copyright: See COPYING file that comes with this distribution |
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10 | // |
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11 | // |
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12 | #include <casa/iostream.h> |
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13 | #include <casa/iomanip.h> |
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14 | |
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15 | #include <casa/Exceptions.h> |
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16 | #include <casa/OS/Path.h> |
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17 | #include <casa/OS/File.h> |
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18 | #include <casa/Quanta/Unit.h> |
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19 | #include <casa/Arrays/ArrayMath.h> |
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20 | #include <casa/Utilities/Regex.h> |
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21 | |
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22 | #include <casa/Containers/RecordField.h> |
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23 | |
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24 | #include <tables/Tables/TableRow.h> |
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25 | |
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26 | #include <atnf/PKSIO/PKSreader.h> |
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27 | |
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28 | #include "STDefs.h" |
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29 | #include "STAttr.h" |
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30 | |
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31 | #include "STFiller.h" |
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32 | #include "STHeader.h" |
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33 | |
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34 | using namespace casa; |
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35 | |
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36 | namespace asap { |
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37 | |
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38 | STFiller::STFiller() : |
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39 | reader_(0), |
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40 | header_(0), |
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41 | table_(0) |
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42 | { |
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43 | } |
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44 | |
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45 | STFiller::STFiller( CountedPtr< Scantable > stbl ) : |
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46 | reader_(0), |
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47 | header_(0), |
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48 | table_(stbl) |
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49 | { |
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50 | } |
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51 | |
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52 | STFiller::STFiller(const std::string& filename, int whichIF, int whichBeam ) : |
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53 | reader_(0), |
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54 | header_(0), |
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55 | table_(0) |
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56 | { |
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57 | open(filename, whichIF, whichBeam); |
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58 | } |
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59 | |
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60 | STFiller::~STFiller() |
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61 | { |
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62 | close(); |
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63 | } |
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64 | |
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65 | void STFiller::open( const std::string& filename, int whichIF, int whichBeam ) |
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66 | { |
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67 | if (table_.null()) { |
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68 | table_ = new Scantable(); |
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69 | } |
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70 | if (reader_) { delete reader_; reader_ = 0; } |
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71 | Bool haveBase, haveSpectra; |
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72 | |
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73 | String inName(filename); |
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74 | Path path(inName); |
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75 | inName = path.expandedName(); |
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76 | |
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77 | File file(inName); |
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78 | if ( !file.exists() ) { |
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79 | throw(AipsError("File does not exist")); |
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80 | } |
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81 | filename_ = inName; |
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82 | |
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83 | // Create reader and fill in values for arguments |
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84 | String format; |
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85 | Vector<Bool> beams; |
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86 | if ( (reader_ = getPKSreader(inName, 0, 0, format, beams, nIF_, |
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87 | nChan_, nPol_, haveBase, haveSpectra, |
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88 | haveXPol_)) == 0 ) { |
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89 | throw(AipsError("Creation of PKSreader failed")); |
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90 | } |
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91 | if (!haveSpectra) { |
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92 | delete reader_; |
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93 | reader_ = 0; |
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94 | throw(AipsError("No spectral data in file.")); |
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95 | return; |
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96 | } |
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97 | |
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98 | nBeam_ = beams.nelements(); |
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99 | // Get basic parameters. |
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100 | if ( haveXPol_ ) { |
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101 | pushLog("Cross polarization present"); |
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102 | nPol_ += 2; // Convert Complex -> 2 Floats |
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103 | } |
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104 | if (header_) delete header_; |
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105 | header_ = new STHeader(); |
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106 | header_->nchan = nChan_; |
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107 | header_->npol = nPol_; |
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108 | header_->nbeam = nBeam_; |
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109 | |
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110 | // not the right thing to do?! |
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111 | //if ( nPol_ == 1 ) header_->poltype = "stokes"; |
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112 | //else header_->poltype = "linear"; |
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113 | header_->poltype = "linear"; |
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114 | Int status = reader_->getHeader(header_->observer, header_->project, |
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115 | header_->antennaname, header_->antennaposition, |
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116 | header_->obstype,header_->equinox, |
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117 | header_->freqref, |
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118 | header_->utc, header_->reffreq, |
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119 | header_->bandwidth); |
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120 | |
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121 | if (status) { |
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122 | delete reader_; |
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123 | reader_ = 0; |
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124 | delete header_; |
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125 | header_ = 0; |
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126 | throw(AipsError("Failed to get header.")); |
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127 | } |
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128 | if ((header_->obstype).matches("*SW*")) { |
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129 | // need robust way here - probably read ahead of next timestamp |
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130 | pushLog("Header indicates frequency switched observation.\n" |
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131 | "setting # of IFs = 1 "); |
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132 | nIF_ = 1; |
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133 | header_->obstype = String("fswitch"); |
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134 | } |
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135 | |
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136 | // Determine Telescope and set brightness unit |
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137 | |
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138 | Bool throwIt = False; |
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139 | Instrument inst = STAttr::convertInstrument(header_->antennaname, throwIt); |
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140 | header_->fluxunit = "Jy"; |
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141 | if (inst==ATMOPRA || inst==TIDBINBILLA) { |
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142 | header_->fluxunit = "K"; |
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143 | } |
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144 | |
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145 | header_->nif = nIF_; |
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146 | header_->epoch = "UTC"; |
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147 | // *** header_->frequnit = "Hz" |
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148 | // Apply selection criteria. |
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149 | |
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150 | Vector<Int> ref; |
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151 | Vector<Bool> beamSel(nBeam_,True); |
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152 | Vector<Bool> IFsel(nIF_,True); |
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153 | |
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154 | ifOffset_ = 0; |
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155 | if (whichIF>=0) { |
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156 | if (whichIF>=0 && whichIF<nIF_) { |
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157 | IFsel = False; |
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158 | IFsel(whichIF) = True; |
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159 | header_->nif = 1; |
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160 | nIF_ = 1; |
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161 | ifOffset_ = whichIF; |
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162 | } else { |
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163 | delete reader_; |
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164 | reader_ = 0; |
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165 | delete header_; |
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166 | header_ = 0; |
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167 | throw(AipsError("Illegal IF selection")); |
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168 | } |
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169 | } |
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170 | |
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171 | beamOffset_ = 0; |
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172 | if (whichBeam>=0) { |
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173 | if (whichBeam>=0 && whichBeam<nBeam_) { |
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174 | beamSel = False; |
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175 | beamSel(whichBeam) = True; |
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176 | header_->nbeam = 1; |
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177 | nBeam_ = 1; |
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178 | beamOffset_ = whichBeam; |
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179 | } else { |
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180 | delete reader_; |
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181 | reader_ = 0; |
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182 | delete header_; |
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183 | header_ = 0; |
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184 | throw(AipsError("Illegal Beam selection")); |
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185 | } |
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186 | } |
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187 | Vector<Int> start(nIF_, 1); |
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188 | Vector<Int> end(nIF_, 0); |
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189 | reader_->select(beamSel, IFsel, start, end, ref, True, haveXPol_); |
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190 | table_->setHeader(*header_); |
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191 | } |
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192 | |
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193 | void STFiller::close( ) |
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194 | { |
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195 | delete reader_;reader_=0; |
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196 | delete header_;header_=0; |
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197 | table_ = 0; |
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198 | } |
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199 | |
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200 | int asap::STFiller::read( ) |
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201 | { |
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202 | int status = 0; |
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203 | |
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204 | Int beamNo, IFno, refBeam, scanNo, cycleNo; |
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205 | Float azimuth, elevation, focusAxi, focusRot, focusTan, |
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206 | humidity, parAngle, pressure, temperature, windAz, windSpeed; |
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207 | Double bandwidth, freqInc, interval, mjd, refFreq, restFreq, srcVel; |
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208 | String fieldName, srcName, tcalTime; |
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209 | Vector<Float> calFctr, sigma, tcal, tsys; |
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210 | Matrix<Float> baseLin, baseSub; |
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211 | Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2); |
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212 | Matrix<Float> spectra; |
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213 | Matrix<uChar> flagtra; |
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214 | Complex xCalFctr; |
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215 | Vector<Complex> xPol; |
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216 | while ( status == 0 ) { |
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217 | status = reader_->read(scanNo, cycleNo, mjd, interval, fieldName, |
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218 | srcName, srcDir, srcPM, srcVel, IFno, refFreq, |
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219 | bandwidth, freqInc, restFreq, tcal, tcalTime, |
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220 | azimuth, elevation, parAngle, focusAxi, |
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221 | focusTan, focusRot, temperature, pressure, |
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222 | humidity, windSpeed, windAz, refBeam, |
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223 | beamNo, direction, scanRate, |
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224 | tsys, sigma, calFctr, baseLin, baseSub, |
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225 | spectra, flagtra, xCalFctr, xPol); |
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226 | if ( status != 0 ) break; |
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227 | TableRow row(table_->table()); |
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228 | TableRecord& rec = row.record(); |
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229 | // fields that don't get used and are just passed through asap |
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230 | RecordFieldPtr<Array<Double> > srateCol(rec, "SCANRATE"); |
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231 | *srateCol = scanRate; |
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232 | RecordFieldPtr<Array<Double> > spmCol(rec, "SRCPROPERMOTION"); |
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233 | *spmCol = srcPM; |
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234 | RecordFieldPtr<Array<Double> > sdirCol(rec, "SRCDIRECTION"); |
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235 | *sdirCol = srcDir; |
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236 | RecordFieldPtr<Double> svelCol(rec, "SRCVELOCITY"); |
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237 | *svelCol = srcVel; |
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238 | // the real stuff |
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239 | RecordFieldPtr<Int> fitCol(rec, "FIT_ID"); |
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240 | *fitCol = -1; |
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241 | RecordFieldPtr<uInt> scanoCol(rec, "SCANNO"); |
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242 | *scanoCol = scanNo-1; |
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243 | RecordFieldPtr<uInt> cyclenoCol(rec, "CYCLENO"); |
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244 | *cyclenoCol = cycleNo-1; |
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245 | RecordFieldPtr<Double> mjdCol(rec, "TIME"); |
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246 | *mjdCol = mjd; |
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247 | RecordFieldPtr<Double> intCol(rec, "INTERVAL"); |
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248 | *intCol = interval; |
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249 | RecordFieldPtr<String> srcnCol(rec, "SRCNAME"); |
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250 | RecordFieldPtr<Int> srctCol(rec, "SRCTYPE"); |
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251 | // try to auto-identify if it is on or off. |
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252 | Regex rx(".*[e|w|_R]$"); |
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253 | Regex rx2("_S$"); |
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254 | Int match = srcName.matches(rx); |
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255 | if (match) { |
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256 | *srcnCol = srcName; |
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257 | } else { |
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258 | *srcnCol = srcName.before(rx2); |
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259 | } |
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260 | //*srcnCol = srcName;//.before(rx2); |
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261 | *srctCol = match; |
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262 | RecordFieldPtr<uInt> beamCol(rec, "BEAMNO"); |
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263 | *beamCol = beamNo-beamOffset_-1; |
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264 | RecordFieldPtr<Int> rbCol(rec, "REFBEAMNO"); |
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265 | Int rb = -1; |
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266 | if (nBeam_ > 1 ) rb = refBeam-1; |
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267 | *rbCol = rb; |
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268 | RecordFieldPtr<uInt> ifCol(rec, "IFNO"); |
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269 | *ifCol = IFno-ifOffset_- 1; |
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270 | uInt id; |
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271 | /// @todo this has to change when nchan isn't global anymore |
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272 | id = table_->frequencies().addEntry(Double(header_->nchan/2), |
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273 | refFreq, freqInc); |
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274 | RecordFieldPtr<uInt> mfreqidCol(rec, "FREQ_ID"); |
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275 | *mfreqidCol = id; |
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276 | |
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277 | id = table_->molecules().addEntry(restFreq); |
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278 | RecordFieldPtr<uInt> molidCol(rec, "MOLECULE_ID"); |
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279 | *molidCol = id; |
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280 | |
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281 | id = table_->tcal().addEntry(tcalTime, tcal); |
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282 | RecordFieldPtr<uInt> mcalidCol(rec, "TCAL_ID"); |
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283 | *mcalidCol = id; |
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284 | id = table_->weather().addEntry(temperature, pressure, humidity, |
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285 | windSpeed, windAz); |
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286 | RecordFieldPtr<uInt> mweatheridCol(rec, "WEATHER_ID"); |
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287 | *mweatheridCol = id; |
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288 | RecordFieldPtr<uInt> mfocusidCol(rec, "FOCUS_ID"); |
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289 | id = table_->focus().addEntry(focusAxi, focusTan, focusRot); |
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290 | *mfocusidCol = id; |
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291 | RecordFieldPtr<Array<Double> > dirCol(rec, "DIRECTION"); |
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292 | *dirCol = direction; |
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293 | RecordFieldPtr<Float> azCol(rec, "AZIMUTH"); |
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294 | *azCol = azimuth; |
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295 | RecordFieldPtr<Float> elCol(rec, "ELEVATION"); |
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296 | *elCol = elevation; |
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297 | |
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298 | RecordFieldPtr<Float> parCol(rec, "PARANGLE"); |
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299 | *parCol = parAngle; |
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300 | |
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301 | RecordFieldPtr< Array<Float> > specCol(rec, "SPECTRA"); |
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302 | RecordFieldPtr< Array<uChar> > flagCol(rec, "FLAGTRA"); |
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303 | RecordFieldPtr< uInt > polnoCol(rec, "POLNO"); |
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304 | |
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305 | RecordFieldPtr< Array<Float> > tsysCol(rec, "TSYS"); |
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306 | // Turn the (nchan,npol) matrix and possible complex xPol vector |
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307 | // into 2-4 rows in the scantable |
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308 | Vector<Float> tsysvec(1); |
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309 | // Why is spectra.ncolumn() == 3 for haveXPol_ == True |
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310 | uInt npol = (spectra.ncolumn()==1 ? 1: 2); |
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311 | for ( uInt i=0; i< npol; ++i ) { |
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312 | tsysvec = tsys(i); |
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313 | *tsysCol = tsysvec; |
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314 | *polnoCol = i; |
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315 | |
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316 | *specCol = spectra.column(i); |
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317 | *flagCol = flagtra.column(i); |
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318 | table_->table().addRow(); |
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319 | row.put(table_->table().nrow()-1, rec); |
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320 | } |
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321 | if ( haveXPol_ ) { |
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322 | // no tsys given for xpol, so emulate it |
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323 | tsysvec = sqrt(tsys[0]*tsys[1]); |
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324 | *tsysCol = tsysvec; |
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325 | // add real part of cross pol |
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326 | *polnoCol = 2; |
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327 | Vector<Float> r(real(xPol)); |
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328 | *specCol = r; |
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329 | // make up flags from linears |
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330 | /// @fixme this has to be a bitwise or of both pols |
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331 | *flagCol = flagtra.column(0);// | flagtra.column(1); |
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332 | table_->table().addRow(); |
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333 | row.put(table_->table().nrow()-1, rec); |
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334 | // ad imaginary part of cross pol |
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335 | *polnoCol = 3; |
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336 | Vector<Float> im(imag(xPol)); |
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337 | *specCol = im; |
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338 | table_->table().addRow(); |
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339 | row.put(table_->table().nrow()-1, rec); |
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340 | } |
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341 | } |
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342 | if (status > 0) { |
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343 | close(); |
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344 | throw(AipsError("Reading error occured, data possibly corrupted.")); |
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345 | } |
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346 | return status; |
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347 | } |
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348 | |
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349 | }//namespace asap |
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