1 | // |
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2 | // C++ Implementation: STCalibration |
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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: Takeshi Nakazato <takeshi.nakazato@nao.ac.jp> (C) 2012 |
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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 | |
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13 | #include "STCalibration.h" |
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14 | #include "STCalSkyTable.h" |
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15 | #include "RowAccumulator.h" |
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16 | #include "STIdxIter.h" |
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17 | |
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18 | using namespace casacore; |
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19 | |
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20 | namespace asap { |
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21 | STCalibration::STCalibration(CountedPtr<Scantable> &s, const String target_column) |
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22 | : scantable_(s), |
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23 | target_column_(target_column) |
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24 | { |
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25 | } |
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26 | |
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27 | void STCalibration::calibrate() |
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28 | { |
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29 | STSelector selOrg = scantable_->getSelection(); |
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30 | setupSelector(selOrg); |
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31 | scantable_->setSelection(sel_); |
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32 | |
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33 | fillCalTable(); |
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34 | |
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35 | scantable_->setSelection(selOrg); |
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36 | } |
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37 | |
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38 | void STCalibration::fillCalTable() |
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39 | { |
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40 | RowAccumulator acc(W_TINT); |
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41 | |
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42 | vector<string> cols(3); |
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43 | cols[0] = "IFNO"; |
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44 | cols[1] = "POLNO"; |
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45 | cols[2] = "BEAMNO"; |
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46 | STIdxIter2 iter(scantable_, cols); |
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47 | |
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48 | ROScalarColumn<Double> *tcol = new ROScalarColumn<Double>(scantable_->table(), "TIME"); |
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49 | Vector<Double> timeSec = tcol->getColumn() * 86400.0; |
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50 | tcol->attach(scantable_->table(), "INTERVAL"); |
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51 | Vector<Double> intervalSec = tcol->getColumn(); |
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52 | delete tcol; |
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53 | ROScalarColumn<Float> *ecol = new ROScalarColumn<Float>(scantable_->table(), "ELEVATION"); |
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54 | Vector<Float> elevation = ecol->getColumn(); |
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55 | delete ecol; |
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56 | |
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57 | ROArrayColumn<Float> specCol(scantable_->table(), target_column_); |
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58 | ROArrayColumn<uChar> flagCol(scantable_->table(), "FLAGTRA"); |
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59 | ROScalarColumn<uInt> freqidCol(scantable_->table(), "FREQ_ID"); |
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60 | ROScalarColumn<uInt> flagrowCol(scantable_->table(), "FLAGROW"); |
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61 | Vector<uInt> flagrow = flagrowCol.getColumn(); |
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62 | |
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63 | // dummy Tsys: the following process doesn't need Tsys but RowAccumulator |
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64 | // requires to set it with spectral data |
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65 | Vector<Float> tsys(1, 1.0); |
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66 | |
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67 | Double timeCen = 0.0; |
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68 | Float elCen = 0.0; |
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69 | uInt count = 0; |
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70 | |
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71 | while(!iter.pastEnd()) { |
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72 | Vector<uInt> rows = iter.getRows(SHARE); |
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73 | Record current = iter.currentValue(); |
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74 | //os_ << "current=" << current << LogIO::POST; |
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75 | uInt len = rows.nelements(); |
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76 | if (len == 0) { |
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77 | iter.next(); |
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78 | continue; |
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79 | } |
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80 | else if (len == 1) { |
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81 | uInt irow = rows[0]; |
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82 | if (flagrow[irow] == 0) { |
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83 | appenddata(0, 0, current.asuInt("BEAMNO"), current.asuInt("IFNO"), current.asuInt("POLNO"), |
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84 | freqidCol(irow), timeSec[irow] / 86400.0, elevation[irow], specCol(irow), |
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85 | flagCol(irow)); |
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86 | } |
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87 | iter.next(); |
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88 | continue; |
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89 | } |
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90 | |
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91 | uInt nchan = scantable_->nchan(scantable_->getIF(rows[0])); |
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92 | Vector<uChar> flag(nchan); |
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93 | Vector<Bool> bflag(nchan); |
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94 | Vector<Float> spec(nchan); |
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95 | |
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96 | Vector<Double> timeSep(len); |
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97 | for (uInt i = 0; i < len-1; i++) { |
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98 | timeSep[i] = timeSec[rows[i+1]] - timeSec[rows[i]] ; |
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99 | } |
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100 | Double tMedian = median(timeSep(IPosition(1,0), IPosition(1,len-2))); |
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101 | timeSep[len-1] = tMedian * 10000.0 ; // any large value |
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102 | |
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103 | uInt irow ; |
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104 | uInt jrow ; |
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105 | for (uInt i = 0; i < len; i++) { |
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106 | //os_ << "start row " << rows[i] << LogIO::POST; |
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107 | irow = rows[i]; |
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108 | jrow = (i < len-1) ? rows[i+1] : rows[i]; |
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109 | // accumulate data |
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110 | flagCol.get(irow, flag); |
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111 | convertArray(bflag, flag); |
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112 | specCol.get(irow, spec); |
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113 | if ( !allEQ(bflag,True) && flagrow[irow] == 0 ) |
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114 | acc.add( spec, !bflag, tsys, intervalSec[irow], timeSec[irow] ) ; |
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115 | timeCen += timeSec[irow]; |
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116 | elCen += elevation[irow]; |
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117 | count++; |
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118 | |
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119 | // check time gap |
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120 | double gap = 2.0 * timeSep[i] / (intervalSec[jrow] + intervalSec[irow]); |
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121 | if ( gap > 1.1 ) { |
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122 | if ( acc.state() ) { |
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123 | acc.replaceNaN() ; |
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124 | // const Vector<Bool> &msk = acc.getMask(); |
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125 | // convertArray(flag, !msk); |
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126 | // for (uInt k = 0; k < nchan; ++k) { |
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127 | // uChar userFlag = 1 << 7; |
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128 | // if (msk[k]==True) userFlag = 0 << 7; |
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129 | // flag(k) = userFlag; |
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130 | // } |
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131 | timeCen /= (Double)count * 86400.0; // sec->day |
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132 | elCen /= (Float)count; |
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133 | const Vector<Bool> &mask = acc.getMask(); |
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134 | Vector<uChar> flag(mask.shape(), (uChar)0); |
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135 | const uChar userFlag = 1 << 7; |
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136 | for (uInt k = 0; k < flag.nelements(); ++k) { |
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137 | if (mask[k] == False) |
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138 | flag[k] = userFlag; |
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139 | } |
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140 | appenddata(0, 0, current.asuInt("BEAMNO"), current.asuInt("IFNO"), |
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141 | current.asuInt("POLNO"), |
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142 | freqidCol(irow), timeCen, elCen, |
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143 | acc.getSpectrum(), flag); |
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144 | } |
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145 | acc.reset() ; |
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146 | timeCen = 0.0; |
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147 | elCen = 0.0; |
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148 | count = 0; |
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149 | } |
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150 | } |
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151 | |
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152 | iter.next() ; |
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153 | //os_ << "end " << current << LogIO::POST; |
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154 | } |
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155 | } |
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156 | |
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157 | } |
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