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 | } |
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86 | |
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87 | void RowAccumulator::doAddSpectrum(const Vector<Float>& v, |
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88 | const Vector<Bool>& m, |
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89 | const Vector<Float>& tsys, |
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90 | const Double interval, |
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91 | const Double time, |
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92 | const Bool inverseMask) |
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93 | { |
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94 | Vector<Float> vUse = v.copy(); |
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95 | Vector<Bool> mUse = m.copy(); |
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96 | if (inverseMask) mUse = !mUse; |
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97 | MaskedArray<Float> vadd(vUse, mUse); |
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98 | Float totalWeight = getTotalWeight(vadd, tsys, interval, time, inverseMask); |
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99 | vadd *= totalWeight; |
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100 | MaskedArray<Float> wadd(Vector<Float>(mUse.nelements(), totalWeight), mUse); |
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101 | MaskedArray<uInt> inc(Vector<uInt>(mUse.nelements(), 1), mUse); |
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102 | |
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103 | if (inverseMask) { |
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104 | spectrumNoMask_ += vadd; |
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105 | weightSumNoMask_ += wadd; |
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106 | nNoMask_ += inc; |
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107 | } else { |
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108 | spectrum_ += vadd; |
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109 | weightSum_ += wadd; |
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110 | n_ += inc; |
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111 | } |
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112 | } |
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113 | |
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114 | Float RowAccumulator::getTotalWeight(const MaskedArray<Float>& data, |
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115 | const Vector<Float>& tsys, |
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116 | const Double interval, |
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117 | const Double time, |
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118 | const Bool inverseMask) |
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119 | { |
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120 | Float totalWeight = 1.0; |
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121 | Vector<Bool> m = data.getMask(); |
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122 | if (!allEQ(m, False)) { // only add these if not everything masked |
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123 | totalWeight *= addTsys(tsys, inverseMask); |
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124 | totalWeight *= addInterval(interval, inverseMask); |
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125 | addTime(time, inverseMask); |
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126 | |
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127 | if (weightType_ == W_VAR) { |
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128 | Float fac = 1.0/variance(data); |
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129 | if (!inverseMask && (m.nelements() == userMask_.nelements())) |
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130 | fac = 1.0/variance(data(userMask_)); |
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131 | |
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132 | totalWeight *= fac; |
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133 | } |
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134 | } |
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135 | |
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136 | return totalWeight; |
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137 | } |
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138 | |
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139 | Float RowAccumulator::addTsys(const Vector<Float>& v, Bool inverseMask) |
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140 | { |
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141 | // @fixme this assume tsys is the same for all channels |
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142 | |
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143 | Float w = 1.0; |
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144 | if (inverseMask) { |
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145 | tsysSumNoMask_ += v[0]; |
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146 | } else { |
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147 | tsysSum_ += v[0]; |
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148 | } |
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149 | if ( weightType_ == W_TSYS || weightType_ == W_TINTSYS ) { |
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150 | w /= (v[0]*v[0]); |
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151 | } |
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152 | return w; |
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153 | } |
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154 | |
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155 | void RowAccumulator::addTime(Double t, Bool inverseMask) |
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156 | { |
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157 | if (inverseMask) { |
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158 | timeSumNoMask_ += t; |
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159 | } else { |
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160 | timeSum_ += t; |
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161 | } |
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162 | } |
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163 | |
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164 | Float RowAccumulator::addInterval(Double inter, Bool inverseMask) |
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165 | { |
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166 | Float w = 1.0; |
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167 | if (inverseMask) { |
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168 | intervalSumNoMask_ += inter; |
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169 | } else { |
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170 | intervalSum_ += inter; |
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171 | } |
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172 | if (weightType_ == W_TINT || weightType_ == W_TINTSYS) { |
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173 | w /= Float(inter); |
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174 | } |
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175 | return w; |
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176 | } |
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177 | |
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178 | Vector<Float> RowAccumulator::getSpectrum() const |
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179 | { |
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180 | return (spectrum_/weightSum_).getArray(); |
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181 | } |
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182 | |
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183 | Double RowAccumulator::getTime() const |
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184 | { |
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185 | return timeSum_/Float(max(n_)); |
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186 | } |
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187 | |
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188 | Double RowAccumulator::getInterval() const |
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189 | { |
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190 | return intervalSum_; |
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191 | } |
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192 | |
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193 | Vector<Bool> RowAccumulator::getMask() const |
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194 | { |
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195 | // Return the "total" mask - False where no points have been accumulated. |
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196 | return (n_.getArray() > uInt(0)); |
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197 | } |
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198 | |
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199 | Vector<Float> RowAccumulator::getTsys() const |
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200 | { |
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201 | // @fixme this assumes tsys.nelements() == 1 |
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202 | return tsysSum_/Float(max(n_)); |
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203 | } |
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204 | |
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205 | void RowAccumulator::setUserMask(const Vector<Bool>& m) |
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206 | { |
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207 | userMask_.resize(); |
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208 | userMask_ = m; |
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209 | } |
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210 | |
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211 | // Added by TT check the state of RowAccumulator |
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212 | Bool RowAccumulator::state() const |
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213 | { |
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214 | return initialized_; |
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215 | } |
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216 | |
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217 | void RowAccumulator::replaceNaN() |
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218 | { |
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219 | Vector<Float> v = spectrum_.getArray(); |
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220 | Vector<Float> w = weightSum_.getArray(); |
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221 | Vector<Float> vRef = spectrumNoMask_.getArray(); |
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222 | Vector<Float> wRef = weightSumNoMask_.getArray(); |
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223 | |
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224 | for (uInt i = 0; i < v.size(); ++i) { |
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225 | if (w[i] == 0.0) { |
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226 | v[i] = vRef[i]; |
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227 | w[i] = wRef[i]; |
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228 | } |
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229 | } |
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230 | |
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231 | spectrum_.setData(v, Vector<Bool>(v.nelements(), True)); |
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232 | weightSum_.setData(w, Vector<Bool>(w.nelements(), True)); |
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233 | } |
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