1 | // |
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2 | // C++ Implementation: RowAccumulator |
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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 <Malte.Marquarding@csiro.au>, (C) 2005 |
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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 <casa/iomanip.h> |
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14 | #include <casa/Arrays/MaskArrMath.h> |
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15 | #include <casa/Arrays/MaskArrLogi.h> |
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16 | #include <casa/Arrays/ArrayMath.h> |
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17 | #include <casa/Arrays/ArrayLogical.h> |
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18 | #include "RowAccumulator.h" |
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19 | |
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20 | using namespace casa; |
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21 | using namespace asap; |
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22 | |
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23 | RowAccumulator::RowAccumulator(WeightType wt) : weightType_(wt), initialized_(False) |
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24 | { |
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25 | reset(); |
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26 | } |
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27 | |
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28 | RowAccumulator::~RowAccumulator() |
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29 | { |
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30 | } |
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31 | |
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32 | |
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33 | void RowAccumulator::reset(const uInt size, const uInt tsysSize) |
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34 | { |
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35 | Vector<Bool> m(size, True); |
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36 | |
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37 | spectrum_.setData(Vector<Float>(size, 0.0), Vector<Bool>(size, True)); |
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38 | spectrumNoMask_.setData(Vector<Float>(size, 0.0), Vector<Bool>(size, True)); |
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39 | |
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40 | n_.setData(Vector<uInt>(size, 0), Vector<Bool>(size, True)); |
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41 | nNoMask_.setData(Vector<uInt>(size, 0), Vector<Bool>(size, True)); |
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42 | |
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43 | weightSum_.setData(Vector<Float>(size, 0.0), Vector<Bool>(size, True)); |
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44 | weightSumNoMask_.setData(Vector<Float>(size, 0.0), Vector<Bool>(size, True)); |
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45 | |
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46 | tsysSum_.resize(tsysSize); tsysSum_=0.0; |
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47 | tsysSumNoMask_.resize(tsysSize); tsysSumNoMask_=0.0; |
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48 | |
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49 | intervalSum_ = 0.0; |
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50 | intervalSumNoMask_ = 0.0; |
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51 | |
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52 | timeSum_ = 0.0; |
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53 | timeSumNoMask_ = 0.0; |
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54 | |
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55 | initialized_ = False; |
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56 | } |
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57 | |
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58 | void RowAccumulator::initialize(const uInt size, const uInt tsysSize) |
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59 | { |
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60 | reset(size, tsysSize); |
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61 | initialized_ = True; |
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62 | } |
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63 | |
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64 | void RowAccumulator::add(const Vector<Float>& v, |
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65 | const Vector<Bool>& m, |
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66 | const Vector<Float>& tsys, |
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67 | const Double interval, |
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68 | const Double time) |
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69 | { |
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70 | uInt size = v.nelements(); |
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71 | //if (size != m.nelements()) raiseError; |
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72 | if (!initialized_) initialize(size, tsys.nelements()); |
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73 | |
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74 | addSpectrum(v, m, tsys, interval, time); |
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75 | } |
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76 | |
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77 | void RowAccumulator::addSpectrum(const Vector<Float>& v, |
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78 | const Vector<Bool>& m, |
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79 | const Vector<Float>& tsys, |
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80 | const Double interval, |
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81 | const Double time) |
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82 | { |
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83 | // doAddSpectrum(v, m, tsys, interval, time, False); |
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84 | // doAddSpectrum(v, m, tsys, interval, time, True); // CAS-2776 |
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85 | doAddSpectrum2( v, m, tsys, interval, time ) ; |
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86 | } |
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87 | |
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88 | void RowAccumulator::doAddSpectrum(const Vector<Float>& v, |
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89 | const Vector<Bool>& m, |
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90 | const Vector<Float>& tsys, |
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91 | const Double interval, |
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92 | const Double time, |
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93 | const Bool inverseMask) |
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94 | { |
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95 | Vector<Float> vUse = v.copy(); |
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96 | Vector<Bool> mUse = m.copy(); |
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97 | if (inverseMask) mUse = !mUse; |
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98 | MaskedArray<Float> vadd(vUse, mUse); |
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99 | Float totalWeight = getTotalWeight(vadd, tsys, interval, time, inverseMask); |
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100 | vadd *= totalWeight; |
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101 | MaskedArray<Float> wadd(Vector<Float>(mUse.nelements(), totalWeight), mUse); |
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102 | MaskedArray<uInt> inc(Vector<uInt>(mUse.nelements(), 1), mUse); |
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103 | |
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104 | if (inverseMask) { |
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105 | spectrumNoMask_ += vadd; |
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106 | weightSumNoMask_ += wadd; |
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107 | nNoMask_ += inc; |
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108 | } else { |
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109 | spectrum_ += vadd; |
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110 | weightSum_ += wadd; |
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111 | n_ += inc; |
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112 | } |
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113 | } |
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114 | |
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115 | void RowAccumulator::doAddSpectrum2(const Vector<Float>& v, |
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116 | const Vector<Bool>& m, |
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117 | const Vector<Float>& tsys, |
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118 | const Double interval, |
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119 | const Double time) |
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120 | { |
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121 | const MaskedArray<Float> vadd(v, m); |
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122 | const MaskedArray<Float> vaddN(v, !m); |
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123 | Float totalWeight = getTotalWeight( vadd, tsys, interval, time, False ) ; |
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124 | Float totalWeightNoMask = getTotalWeight( vaddN, tsys, interval, time, True ) ; |
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125 | // process spectrum with input mask and spectrum with inverted mask |
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126 | // together |
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127 | // prepare pointers |
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128 | Bool vD, mD ; |
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129 | const Float *v_p = v.getStorage( vD ) ; |
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130 | const Float *v_wp = v_p ; |
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131 | const Bool *m_p = m.getStorage( mD ) ; |
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132 | const Bool *m_wp = m_p ; |
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133 | |
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134 | Bool spD, spND, wgtD, wgtND, nD, nND ; |
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135 | Float *sp_p = spectrum_.getRWArrayStorage( spD ) ; |
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136 | Float *sp_wp = sp_p ; |
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137 | Float *wgt_p = weightSum_.getRWArrayStorage( wgtD ) ; |
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138 | Float *wgt_wp = wgt_p ; |
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139 | Float *spN_p = spectrumNoMask_.getRWArrayStorage( spND ) ; |
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140 | Float *spN_wp = spN_p ; |
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141 | Float *wgtN_p = weightSumNoMask_.getRWArrayStorage( wgtND ) ; |
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142 | Float *wgtN_wp = wgtN_p ; |
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143 | uInt *n_p = n_.getRWArrayStorage( nD ) ; |
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144 | uInt *n_wp = n_p ; |
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145 | uInt *nN_p = nNoMask_.getRWArrayStorage( nND ) ; |
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146 | uInt *nN_wp = nN_p ; |
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147 | |
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148 | // actual processing |
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149 | uInt len = m.nelements() ; |
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150 | // loop over channels |
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151 | for ( uInt i = 0 ; i < len ; i++ ) { |
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152 | // masks for spectrum_ and spectrumNoMask_ are not needed since |
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153 | // it is initialized as True for all channels and those are constant |
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154 | if ( *m_wp ) { |
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155 | // mask is True |
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156 | // add v * totalWeight to spectrum_ |
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157 | // add totalWeight to weightSum_ |
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158 | // increment n_ |
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159 | *sp_wp += *v_wp * totalWeight ; |
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160 | *wgt_wp += totalWeight ; |
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161 | *n_wp += 1 ; |
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162 | } |
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163 | else { |
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164 | // mask is False |
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165 | // add v * totalWeightNoMask to spectrumNoMask_ |
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166 | // add totalWeightNoMask to weightSumNoMask_ |
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167 | // increment nNoMask_ |
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168 | *spN_wp += *v_wp * totalWeightNoMask ; |
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169 | *wgtN_wp += totalWeightNoMask ; |
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170 | *nN_wp += 1 ; |
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171 | } |
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172 | sp_wp++ ; |
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173 | wgt_wp++ ; |
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174 | n_wp++ ; |
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175 | spN_wp++ ; |
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176 | wgtN_wp++ ; |
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177 | nN_wp++ ; |
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178 | v_wp++ ; |
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179 | m_wp++ ; |
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180 | } |
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181 | |
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182 | // free storage |
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183 | spectrum_.putArrayStorage( sp_p, spD ) ; |
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184 | weightSum_.putArrayStorage( wgt_p, wgtD ) ; |
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185 | spectrumNoMask_.putArrayStorage( spN_p, spND ) ; |
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186 | weightSumNoMask_.putArrayStorage( wgtN_p, wgtND ) ; |
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187 | n_.putArrayStorage( n_p, nD ) ; |
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188 | nNoMask_.putArrayStorage( nN_p, nND ) ; |
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189 | |
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190 | v.freeStorage( v_p, vD ) ; |
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191 | m.freeStorage( m_p, mD ) ; |
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192 | } |
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193 | |
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194 | Float RowAccumulator::getTotalWeight(const MaskedArray<Float>& data, |
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195 | const Vector<Float>& tsys, |
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196 | const Double interval, |
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197 | const Double time, |
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198 | const Bool inverseMask) |
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199 | { |
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200 | Float totalWeight = 1.0; |
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201 | Vector<Bool> m = data.getMask(); |
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202 | if (!allEQ(m, False)) { // only add these if not everything masked |
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203 | totalWeight *= addTsys(tsys, inverseMask); |
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204 | totalWeight *= addInterval(interval, inverseMask); |
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205 | addTime(time, inverseMask); |
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206 | |
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207 | if (weightType_ == W_VAR) { |
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208 | Float fac = 1.0/variance(data); |
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209 | if (!inverseMask && (m.nelements() == userMask_.nelements())) |
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210 | fac = 1.0/variance(data(userMask_)); |
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211 | |
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212 | totalWeight *= fac; |
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213 | } |
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214 | } |
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215 | |
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216 | return totalWeight; |
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217 | } |
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218 | |
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219 | Float RowAccumulator::addTsys(const Vector<Float>& v, Bool inverseMask) |
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220 | { |
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221 | // @fixme this assume tsys is the same for all channels |
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222 | |
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223 | Float w = 1.0; |
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224 | if (inverseMask) { |
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225 | tsysSumNoMask_ += v[0]; |
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226 | } else { |
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227 | tsysSum_ += v[0]; |
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228 | } |
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229 | if ( weightType_ == W_TSYS || weightType_ == W_TINTSYS ) { |
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230 | w /= (v[0]*v[0]); |
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231 | } |
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232 | return w; |
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233 | } |
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234 | |
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235 | void RowAccumulator::addTime(Double t, Bool inverseMask) |
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236 | { |
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237 | if (inverseMask) { |
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238 | timeSumNoMask_ += t; |
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239 | } else { |
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240 | timeSum_ += t; |
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241 | } |
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242 | } |
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243 | |
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244 | Float RowAccumulator::addInterval(Double inter, Bool inverseMask) |
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245 | { |
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246 | Float w = 1.0; |
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247 | if (inverseMask) { |
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248 | intervalSumNoMask_ += inter; |
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249 | } else { |
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250 | intervalSum_ += inter; |
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251 | } |
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252 | if (weightType_ == W_TINT || weightType_ == W_TINTSYS) { |
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253 | w /= Float(inter); |
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254 | } |
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255 | return w; |
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256 | } |
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257 | |
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258 | Vector<Float> RowAccumulator::getSpectrum() const |
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259 | { |
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260 | return (spectrum_/weightSum_).getArray(); |
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261 | } |
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262 | |
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263 | Double RowAccumulator::getTime() const |
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264 | { |
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265 | return timeSum_/Float(max(n_)); |
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266 | } |
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267 | |
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268 | Double RowAccumulator::getInterval() const |
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269 | { |
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270 | return intervalSum_; |
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271 | } |
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272 | |
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273 | Vector<Bool> RowAccumulator::getMask() const |
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274 | { |
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275 | // Return the "total" mask - False where no points have been accumulated. |
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276 | return (n_.getArray() > uInt(0)); |
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277 | } |
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278 | |
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279 | Vector<Float> RowAccumulator::getTsys() const |
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280 | { |
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281 | // @fixme this assumes tsys.nelements() == 1 |
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282 | return tsysSum_/Float(max(n_)); |
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283 | } |
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284 | |
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285 | void RowAccumulator::setUserMask(const Vector<Bool>& m) |
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286 | { |
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287 | userMask_.resize(); |
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288 | userMask_ = m; |
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289 | } |
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290 | |
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291 | // Added by TT check the state of RowAccumulator |
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292 | Bool RowAccumulator::state() const |
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293 | { |
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294 | return initialized_; |
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295 | } |
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296 | |
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297 | void RowAccumulator::replaceNaN() |
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298 | { |
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299 | Vector<Float> v = spectrum_.getArray(); |
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300 | Vector<Float> w = weightSum_.getArray(); |
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301 | Vector<Float> vRef = spectrumNoMask_.getArray(); |
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302 | Vector<Float> wRef = weightSumNoMask_.getArray(); |
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303 | |
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304 | for (uInt i = 0; i < v.size(); ++i) { |
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305 | if (w[i] == 0.0) { |
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306 | v[i] = vRef[i]; |
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307 | w[i] = wRef[i]; |
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308 | } |
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309 | } |
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310 | |
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311 | spectrum_.setData(v, Vector<Bool>(v.nelements(), True)); |
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312 | weightSum_.setData(w, Vector<Bool>(w.nelements(), True)); |
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313 | } |
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