1 | // |
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2 | // C++ Implementation: STApplyCal |
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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 | #include <assert.h> |
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13 | |
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14 | #include <casa/Arrays/Array.h> |
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15 | #include <casa/Arrays/Vector.h> |
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16 | #include <casa/Arrays/Matrix.h> |
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17 | #include <casa/Arrays/ArrayIO.h> |
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18 | #include <casa/Arrays/ArrayMath.h> |
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19 | #include <casa/BasicSL/String.h> |
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20 | #include <casa/Logging/LogIO.h> |
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21 | #include <casa/Exceptions/Error.h> |
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22 | #include <casa/Utilities/CountedPtr.h> |
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23 | #include <casa/Utilities/Sort.h> |
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24 | #include <tables/Tables/Table.h> |
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25 | |
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26 | #include "Scantable.h" |
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27 | #include "STApplyCal.h" |
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28 | #include "STApplyTable.h" |
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29 | #include "STCalTsysTable.h" |
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30 | #include "STCalSkyTable.h" |
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31 | #include "STCalEnum.h" |
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32 | #include "STIdxIter.h" |
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33 | #include "Calibrator.h" |
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34 | #include "PSAlmaCalibrator.h" |
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35 | #include "Interpolator1D.h" |
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36 | #include "NearestInterpolator1D.h" |
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37 | #include "BufferedLinearInterpolator1D.h" |
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38 | #include "PolynomialInterpolator1D.h" |
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39 | #include "CubicSplineInterpolator1D.h" |
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40 | #include <atnf/PKSIO/SrcType.h> |
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41 | |
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42 | |
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43 | using namespace casa; |
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44 | using namespace std; |
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45 | |
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46 | namespace asap { |
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47 | |
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48 | STApplyCal::STApplyCal() |
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49 | { |
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50 | init(); |
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51 | } |
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52 | |
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53 | STApplyCal::STApplyCal(CountedPtr<Scantable> target) |
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54 | : target_(target) |
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55 | { |
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56 | init(); |
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57 | } |
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58 | |
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59 | STApplyCal::~STApplyCal() |
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60 | { |
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61 | } |
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62 | |
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63 | void STApplyCal::init() |
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64 | { |
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65 | caltype_ = STCalEnum::NoType; |
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66 | doTsys_ = False; |
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67 | iTime_ = STCalEnum::DefaultInterpolation; |
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68 | iFreq_ = STCalEnum::DefaultInterpolation; |
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69 | } |
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70 | |
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71 | void STApplyCal::reset() |
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72 | { |
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73 | // call init |
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74 | init(); |
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75 | |
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76 | // clear apply tables |
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77 | // do not delete object here |
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78 | skytable_.resize(0); |
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79 | tsystable_.resize(0); |
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80 | |
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81 | // clear mapping for Tsys transfer |
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82 | spwmap_.clear(); |
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83 | |
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84 | // reset selector |
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85 | sel_.reset(); |
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86 | |
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87 | // delete interpolators |
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88 | interpolatorT_ = 0; |
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89 | interpolatorS_ = 0; |
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90 | interpolatorF_ = 0; |
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91 | |
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92 | // clear working scantable |
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93 | work_ = 0; |
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94 | |
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95 | // clear calibrator |
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96 | calibrator_ = 0; |
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97 | } |
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98 | |
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99 | void STApplyCal::completeReset() |
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100 | { |
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101 | reset(); |
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102 | target_ = 0; |
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103 | } |
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104 | |
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105 | void STApplyCal::setTarget(CountedPtr<Scantable> target) |
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106 | { |
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107 | target_ = target; |
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108 | } |
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109 | |
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110 | void STApplyCal::setTarget(const String &name) |
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111 | { |
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112 | // always create PlainTable |
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113 | target_ = new Scantable(name, Table::Plain); |
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114 | } |
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115 | |
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116 | void STApplyCal::push(STCalSkyTable *table) |
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117 | { |
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118 | os_.origin(LogOrigin("STApplyCal","push",WHERE)); |
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119 | skytable_.push_back(table); |
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120 | STCalEnum::CalType caltype = STApplyTable::getCalType(table); |
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121 | os_ << "caltype=" << caltype << LogIO::POST; |
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122 | if (caltype_ == STCalEnum::NoType || |
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123 | caltype_ == STCalEnum::DefaultType || |
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124 | caltype_ == STCalEnum::CalTsys) { |
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125 | caltype_ = caltype; |
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126 | } |
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127 | os_ << "caltype_=" << caltype_ << LogIO::POST; |
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128 | } |
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129 | |
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130 | void STApplyCal::push(STCalTsysTable *table) |
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131 | { |
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132 | tsystable_.push_back(table); |
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133 | doTsys_ = True; |
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134 | } |
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135 | |
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136 | void STApplyCal::setTimeInterpolation(STCalEnum::InterpolationType itype, Int order) |
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137 | { |
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138 | iTime_ = itype; |
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139 | order_ = order; |
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140 | } |
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141 | |
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142 | void STApplyCal::setFrequencyInterpolation(STCalEnum::InterpolationType itype, Int order) |
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143 | { |
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144 | iFreq_ = itype; |
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145 | order_ = order; |
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146 | } |
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147 | |
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148 | void STApplyCal::setTsysTransfer(uInt from, Vector<uInt> to) |
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149 | { |
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150 | os_.origin(LogOrigin("STApplyCal","setTsysTransfer",WHERE)); |
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151 | os_ << "from=" << from << ", to=" << to << LogIO::POST; |
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152 | map<uInt, Vector<uInt> >::iterator i = spwmap_.find(from); |
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153 | if (i == spwmap_.end()) { |
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154 | spwmap_.insert(pair<uInt, Vector<uInt> >(from, to)); |
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155 | } |
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156 | else { |
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157 | Vector<uInt> toNew = i->second; |
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158 | spwmap_.erase(i); |
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159 | uInt k = toNew.nelements(); |
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160 | toNew.resize(k+to.nelements(), True); |
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161 | for (uInt i = 0; i < to.nelements(); i++) |
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162 | toNew[i+k] = to[i]; |
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163 | spwmap_.insert(pair<uInt, Vector<uInt> >(from, toNew)); |
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164 | } |
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165 | } |
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166 | |
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167 | void STApplyCal::apply(Bool insitu, Bool filltsys) |
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168 | { |
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169 | os_.origin(LogOrigin("STApplyCal","apply",WHERE)); |
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170 | // calibrator |
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171 | if (caltype_ == STCalEnum::CalPSAlma) |
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172 | calibrator_ = new PSAlmaCalibrator(); |
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173 | |
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174 | // interpolator |
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175 | initInterpolator(); |
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176 | |
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177 | // select data |
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178 | sel_.reset(); |
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179 | if (caltype_ == STCalEnum::CalPSAlma || |
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180 | caltype_ == STCalEnum::CalPS) { |
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181 | sel_.setTypes(vector<int>(1,(int)SrcType::PSON)); |
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182 | } |
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183 | target_->setSelection(sel_); |
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184 | |
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185 | //os_ << "sel_.print()=" << sel_.print() << LogIO::POST; |
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186 | |
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187 | // working data |
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188 | if (insitu) |
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189 | work_ = target_; |
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190 | else |
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191 | work_ = new Scantable(*target_, false); |
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192 | |
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193 | //os_ << "work_->nrow()=" << work_->nrow() << LogIO::POST; |
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194 | |
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195 | // list of apply tables for sky calibration |
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196 | Vector<uInt> skycalList; |
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197 | uInt numSkyCal = 0; |
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198 | uInt nrowSky = 0; |
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199 | |
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200 | // list of apply tables for Tsys calibration |
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201 | for (uInt i = 0 ; i < skytable_.size(); i++) { |
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202 | STCalEnum::CalType caltype = STApplyTable::getCalType(skytable_[i]); |
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203 | if (caltype == caltype_) { |
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204 | skycalList.resize(numSkyCal+1, True); |
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205 | skycalList[numSkyCal] = i; |
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206 | numSkyCal++; |
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207 | nrowSky += skytable_[i]->nrow(); |
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208 | } |
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209 | } |
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210 | |
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211 | |
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212 | vector<string> cols( 3 ) ; |
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213 | cols[0] = "BEAMNO" ; |
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214 | cols[1] = "POLNO" ; |
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215 | cols[2] = "IFNO" ; |
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216 | CountedPtr<STIdxIter> iter = new STIdxIterAcc(work_, cols) ; |
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217 | while (!iter->pastEnd()) { |
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218 | Vector<uInt> ids = iter->current(); |
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219 | Vector<uInt> rows = iter->getRows(SHARE); |
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220 | if (rows.nelements() > 0) |
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221 | doapply(ids[0], ids[2], ids[1], rows, skycalList); |
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222 | iter->next(); |
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223 | } |
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224 | |
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225 | target_->unsetSelection(); |
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226 | } |
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227 | |
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228 | void STApplyCal::doapply(uInt beamno, uInt ifno, uInt polno, |
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229 | Vector<uInt> &rows, |
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230 | Vector<uInt> &skylist, |
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231 | Bool filltsys) |
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232 | { |
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233 | os_.origin(LogOrigin("STApplyCal","doapply",WHERE)); |
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234 | Bool doTsys = doTsys_; |
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235 | |
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236 | STSelector sel; |
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237 | vector<int> id(1); |
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238 | id[0] = beamno; |
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239 | sel.setBeams(id); |
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240 | id[0] = ifno; |
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241 | sel.setIFs(id); |
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242 | id[0] = polno; |
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243 | sel.setPolarizations(id); |
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244 | |
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245 | // apply selection to apply tables |
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246 | uInt nrowSky = 0; |
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247 | uInt nrowTsys = 0; |
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248 | for (uInt i = 0; i < skylist.nelements(); i++) { |
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249 | skytable_[skylist[i]]->setSelection(sel); |
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250 | nrowSky += skytable_[skylist[i]]->nrow(); |
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251 | os_ << "nrowSky=" << nrowSky << LogIO::POST; |
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252 | } |
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253 | uInt nchanTsys = 0; |
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254 | Vector<Double> ftsys; |
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255 | uInt tsysifno = getIFForTsys(ifno); |
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256 | os_ << "tsysifno=" << tsysifno << LogIO::POST; |
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257 | if (tsystable_.size() == 0) { |
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258 | os_.origin(LogOrigin("STApplyTable", "doapply", WHERE)); |
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259 | os_ << "No Tsys tables are given. Skip Tsys calibratoin." << LogIO::POST; |
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260 | doTsys = False; |
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261 | } |
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262 | else if (tsysifno == (uInt)-1) { |
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263 | os_.origin(LogOrigin("STApplyTable", "doapply", WHERE)); |
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264 | os_ << "No corresponding Tsys for IFNO " << ifno << ". Skip Tsys calibration" << LogIO::POST; |
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265 | doTsys = False; |
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266 | } |
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267 | else { |
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268 | nchanTsys = tsystable_[0]->nchan(tsysifno); |
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269 | ftsys = tsystable_[0]->getBaseFrequency(0); |
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270 | interpolatorF_->setX(ftsys.data(), nchanTsys); |
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271 | id[0] = (int)tsysifno; |
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272 | sel.setIFs(id); |
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273 | for (uInt i = 0; i < tsystable_.size() ; i++) { |
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274 | tsystable_[i]->setSelection(sel); |
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275 | nrowTsys += tsystable_[i]->nrow(); |
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276 | } |
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277 | } |
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278 | |
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279 | uInt nchanSp = skytable_[skylist[0]]->nchan(ifno); |
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280 | Vector<Double> timeSky(nrowSky); |
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281 | Matrix<Float> spoff(nchanSp, nrowSky); |
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282 | Vector<Float> iOff(nchanSp); |
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283 | nrowSky = 0; |
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284 | for (uInt i = 0 ; i < skylist.nelements(); i++) { |
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285 | STCalSkyTable *p = skytable_[skylist[i]]; |
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286 | Vector<Double> t = p->getTime(); |
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287 | Matrix<Float> sp = p->getSpectra(); |
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288 | for (uInt j = 0; j < t.nelements(); j++) { |
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289 | timeSky[nrowSky] = t[j]; |
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290 | spoff.column(nrowSky) = sp.column(j); |
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291 | nrowSky++; |
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292 | } |
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293 | } |
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294 | |
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295 | Vector<uInt> skyIdx = timeSort(timeSky); |
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296 | |
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297 | Double *xa = new Double[skyIdx.nelements()]; |
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298 | Float *ya = new Float[skyIdx.nelements()]; |
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299 | IPosition ipos(1, skyIdx.nelements()); |
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300 | Vector<Double> timeSkySorted(ipos, xa, TAKE_OVER); |
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301 | Vector<Float> tmpOff(ipos, ya, TAKE_OVER); |
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302 | for (uInt i = 0 ; i < skyIdx.nelements(); i++) { |
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303 | timeSkySorted[i] = timeSky[skyIdx[i]]; |
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304 | } |
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305 | |
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306 | interpolatorS_->setX(xa, skyIdx.nelements()); |
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307 | |
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308 | Vector<uInt> tsysIdx; |
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309 | Vector<Double> timeTsys(nrowTsys); |
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310 | Matrix<Float> tsys; |
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311 | Vector<Double> timeTsysSorted; |
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312 | Vector<Float> tmpTsys; |
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313 | if (doTsys) { |
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314 | os_ << "doTsys" << LogIO::POST; |
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315 | timeTsys.resize(nrowTsys); |
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316 | tsys.resize(nchanTsys, nrowTsys); |
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317 | nrowTsys = 0; |
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318 | for (uInt i = 0 ; i < tsystable_.size(); i++) { |
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319 | STCalTsysTable *p = tsystable_[i]; |
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320 | Vector<Double> t = p->getTime(); |
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321 | Matrix<Float> ts = p->getTsys(); |
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322 | for (uInt j = 0; j < t.nelements(); j++) { |
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323 | timeTsys[nrowTsys] = t[j]; |
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324 | tsys.column(nrowTsys) = ts.column(j); |
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325 | nrowTsys++; |
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326 | } |
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327 | } |
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328 | tsysIdx = timeSort(timeTsys); |
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329 | |
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330 | Double *xb = new Double[tsysIdx.nelements()]; |
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331 | Float *yb = new Float[tsysIdx.nelements()]; |
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332 | IPosition ipos(1, tsysIdx.nelements()); |
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333 | timeTsysSorted.takeStorage(ipos, xb, TAKE_OVER); |
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334 | tmpTsys.takeStorage(ipos, yb, TAKE_OVER); |
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335 | for (uInt i = 0 ; i < tsysIdx.nelements(); i++) { |
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336 | timeTsysSorted[i] = timeTsys[tsysIdx[i]]; |
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337 | } |
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338 | interpolatorT_->setX(xb, tsysIdx.nelements()); |
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339 | } |
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340 | |
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341 | Table tab = work_->table(); |
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342 | ArrayColumn<Float> spCol(tab, "SPECTRA"); |
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343 | ArrayColumn<Float> tsysCol(tab, "TSYS"); |
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344 | ScalarColumn<Double> timeCol(tab, "TIME"); |
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345 | Vector<Float> on; |
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346 | for (uInt i = 0; i < rows.nelements(); i++) { |
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347 | os_ << "start i = " << i << " (row = " << rows[i] << ")" << LogIO::POST; |
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348 | uInt irow = rows[i]; |
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349 | |
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350 | // target spectral data |
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351 | on = spCol(irow); |
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352 | calibrator_->setSource(on); |
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353 | |
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354 | // interpolation |
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355 | Double t0 = timeCol(irow); |
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356 | for (uInt ichan = 0; ichan < nchanSp; ichan++) { |
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357 | Vector<Float> spOffSlice = spoff.row(ichan); |
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358 | //os_ << "spOffSlice = " << spOffSlice << LogIO::POST; |
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359 | for (uInt j = 0; j < skyIdx.nelements(); j++) { |
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360 | tmpOff[j] = spOffSlice[skyIdx[j]]; |
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361 | } |
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362 | interpolatorS_->setY(ya, skyIdx.nelements()); |
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363 | iOff[ichan] = interpolatorS_->interpolate(t0); |
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364 | } |
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365 | //os_ << "iOff=" << iOff << LogIO::POST; |
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366 | calibrator_->setReference(iOff); |
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367 | |
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368 | Float *Y = new Float[nchanSp]; |
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369 | Vector<Float> iTsys(IPosition(1,nchanSp), Y, TAKE_OVER); |
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370 | if (doTsys) { |
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371 | // Tsys correction |
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372 | Float *yt = new Float[nchanTsys]; |
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373 | Vector<Float> iTsysT(IPosition(1,nchanTsys), yt, TAKE_OVER); |
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374 | Float *yb = tmpTsys.data(); |
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375 | for (uInt ichan = 0; ichan < nchanTsys; ichan++) { |
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376 | Vector<Float> tsysSlice = tsys.row(ichan); |
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377 | for (uInt j = 0; j < tsysIdx.nelements(); j++) { |
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378 | tmpTsys[j] = tsysSlice[tsysIdx[j]]; |
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379 | } |
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380 | interpolatorT_->setY(yb, tsysIdx.nelements()); |
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381 | iTsysT[ichan] = interpolatorT_->interpolate(t0); |
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382 | } |
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383 | if (nchanSp == 1) { |
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384 | // take average |
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385 | iTsys[0] = mean(iTsysT); |
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386 | } |
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387 | else { |
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388 | // interpolation on frequency axis |
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389 | Vector<Double> fsp = getBaseFrequency(rows[i]); |
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390 | interpolatorF_->setY(yt, nchanTsys); |
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391 | for (uInt ichan = 0; ichan < nchanSp; ichan++) { |
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392 | iTsys[ichan] = interpolatorF_->interpolate(fsp[ichan]); |
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393 | } |
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394 | } |
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395 | } |
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396 | else { |
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397 | iTsys = 1.0; |
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398 | } |
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399 | //os_ << "iTsys=" << iTsys << LogIO::POST; |
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400 | calibrator_->setScaler(iTsys); |
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401 | |
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402 | // do calibration |
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403 | calibrator_->calibrate(); |
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404 | |
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405 | // update table |
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406 | //os_ << "calibrated=" << calibrator_->getCalibrated() << LogIO::POST; |
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407 | spCol.put(irow, calibrator_->getCalibrated()); |
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408 | if (filltsys) |
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409 | tsysCol.put(irow, iTsys); |
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410 | } |
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411 | |
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412 | |
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413 | // reset selection on apply tables |
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414 | for (uInt i = 0; i < skylist.nelements(); i++) |
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415 | skytable_[i]->unsetSelection(); |
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416 | for (uInt i = 0; i < tsystable_.size(); i++) |
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417 | tsystable_[i]->unsetSelection(); |
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418 | |
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419 | |
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420 | // reset interpolator |
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421 | interpolatorS_->reset(); |
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422 | interpolatorF_->reset(); |
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423 | interpolatorT_->reset(); |
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424 | } |
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425 | |
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426 | Vector<uInt> STApplyCal::timeSort(Vector<Double> &t) |
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427 | { |
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428 | Sort sort; |
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429 | sort.sortKey(&t[0], TpDouble, 0, Sort::Ascending); |
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430 | Vector<uInt> idx; |
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431 | sort.sort(idx, t.nelements(), Sort::QuickSort|Sort::NoDuplicates); |
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432 | return idx; |
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433 | } |
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434 | |
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435 | uInt STApplyCal::getIFForTsys(uInt to) |
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436 | { |
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437 | for (map<casa::uInt, Vector<uInt> >::iterator i = spwmap_.begin(); |
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438 | i != spwmap_.end(); i++) { |
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439 | Vector<uInt> tolist = i->second; |
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440 | os_ << "from=" << i->first << ": tolist=" << tolist << LogIO::POST; |
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441 | for (uInt j = 0; j < tolist.nelements(); j++) { |
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442 | if (tolist[j] == to) |
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443 | return i->first; |
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444 | } |
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445 | } |
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446 | return (uInt)-1; |
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447 | } |
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448 | |
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449 | void STApplyCal::save(const String &name) |
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450 | { |
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451 | assert(!work_.null()); |
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452 | |
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453 | work_->setSelection(sel_); |
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454 | work_->makePersistent(name); |
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455 | work_->unsetSelection(); |
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456 | } |
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457 | |
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458 | Vector<Double> STApplyCal::getBaseFrequency(uInt whichrow) |
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459 | { |
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460 | assert(whichrow <= (uInt)work_->nrow()); |
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461 | ROTableColumn col(work_->table(), "IFNO"); |
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462 | uInt ifno = col.asuInt(whichrow); |
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463 | col.attach(work_->table(), "FREQ_ID"); |
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464 | uInt freqid = col.asuInt(whichrow); |
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465 | uInt nc = work_->nchan(ifno); |
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466 | STFrequencies ftab = work_->frequencies(); |
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467 | Double rp, rf, inc; |
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468 | ftab.getEntry(rp, rf, inc, freqid); |
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469 | Vector<Double> r(nc); |
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470 | indgen(r, rf-rp*inc, inc); |
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471 | return r; |
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472 | } |
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473 | |
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474 | void STApplyCal::initInterpolator() |
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475 | { |
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476 | os_.origin(LogOrigin("STApplyCal","initInterpolator",WHERE)); |
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477 | int order = (order_ > 0) ? order_ : 1; |
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478 | switch (iTime_) { |
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479 | case STCalEnum::NearestInterpolation: |
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480 | { |
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481 | os_ << "use NearestInterpolator in time axis" << LogIO::POST; |
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482 | interpolatorS_ = new NearestInterpolator1D<Double, Float>(); |
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483 | interpolatorT_ = new NearestInterpolator1D<Double, Float>(); |
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484 | break; |
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485 | } |
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486 | case STCalEnum::LinearInterpolation: |
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487 | { |
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488 | os_ << "use BufferedLinearInterpolator in time axis" << LogIO::POST; |
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489 | interpolatorS_ = new BufferedLinearInterpolator1D<Double, Float>(); |
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490 | interpolatorT_ = new BufferedLinearInterpolator1D<Double, Float>(); |
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491 | break; |
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492 | } |
---|
493 | case STCalEnum::CubicSplineInterpolation: |
---|
494 | { |
---|
495 | os_ << "use CubicSplineInterpolator in time axis" << LogIO::POST; |
---|
496 | interpolatorS_ = new CubicSplineInterpolator1D<Double, Float>(); |
---|
497 | interpolatorT_ = new CubicSplineInterpolator1D<Double, Float>(); |
---|
498 | break; |
---|
499 | } |
---|
500 | case STCalEnum::PolynomialInterpolation: |
---|
501 | { |
---|
502 | os_ << "use PolynomialInterpolator in time axis" << LogIO::POST; |
---|
503 | if (order == 0) { |
---|
504 | interpolatorS_ = new NearestInterpolator1D<Double, Float>(); |
---|
505 | interpolatorT_ = new NearestInterpolator1D<Double, Float>(); |
---|
506 | } |
---|
507 | else { |
---|
508 | interpolatorS_ = new PolynomialInterpolator1D<Double, Float>(); |
---|
509 | interpolatorT_ = new PolynomialInterpolator1D<Double, Float>(); |
---|
510 | interpolatorS_->setOrder(order); |
---|
511 | interpolatorT_->setOrder(order); |
---|
512 | } |
---|
513 | break; |
---|
514 | } |
---|
515 | default: |
---|
516 | { |
---|
517 | os_ << "use BufferedLinearInterpolator in time axis" << LogIO::POST; |
---|
518 | interpolatorS_ = new BufferedLinearInterpolator1D<Double, Float>(); |
---|
519 | interpolatorT_ = new BufferedLinearInterpolator1D<Double, Float>(); |
---|
520 | break; |
---|
521 | } |
---|
522 | } |
---|
523 | |
---|
524 | switch (iFreq_) { |
---|
525 | case STCalEnum::NearestInterpolation: |
---|
526 | { |
---|
527 | os_ << "use NearestInterpolator in frequency axis" << LogIO::POST; |
---|
528 | interpolatorF_ = new NearestInterpolator1D<Double, Float>(); |
---|
529 | break; |
---|
530 | } |
---|
531 | case STCalEnum::LinearInterpolation: |
---|
532 | { |
---|
533 | os_ << "use BufferedLinearInterpolator in frequency axis" << LogIO::POST; |
---|
534 | interpolatorF_ = new BufferedLinearInterpolator1D<Double, Float>(); |
---|
535 | break; |
---|
536 | } |
---|
537 | case STCalEnum::CubicSplineInterpolation: |
---|
538 | { |
---|
539 | os_ << "use CubicSplineInterpolator in frequency axis" << LogIO::POST; |
---|
540 | interpolatorF_ = new CubicSplineInterpolator1D<Double, Float>(); |
---|
541 | break; |
---|
542 | } |
---|
543 | case STCalEnum::PolynomialInterpolation: |
---|
544 | { |
---|
545 | os_ << "use PolynomialInterpolator in frequency axis" << LogIO::POST; |
---|
546 | if (order == 0) { |
---|
547 | interpolatorF_ = new NearestInterpolator1D<Double, Float>(); |
---|
548 | } |
---|
549 | else { |
---|
550 | interpolatorF_ = new PolynomialInterpolator1D<Double, Float>(); |
---|
551 | interpolatorF_->setOrder(order); |
---|
552 | } |
---|
553 | break; |
---|
554 | } |
---|
555 | default: |
---|
556 | { |
---|
557 | os_ << "use LinearInterpolator in frequency axis" << LogIO::POST; |
---|
558 | interpolatorF_ = new BufferedLinearInterpolator1D<Double, Float>(); |
---|
559 | break; |
---|
560 | } |
---|
561 | } |
---|
562 | } |
---|
563 | } |
---|