[814] | 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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[2125] | 12 | |
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[814] | 13 | #include <casa/iomanip.h> |
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| 14 | #include <casa/Arrays/MaskArrMath.h> |
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[1314] | 15 | #include <casa/Arrays/MaskArrLogi.h> |
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[814] | 16 | #include <casa/Arrays/ArrayMath.h> |
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[1314] | 17 | #include <casa/Arrays/ArrayLogical.h> |
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[814] | 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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[2125] | 23 | RowAccumulator::RowAccumulator(WeightType wt) : weightType_(wt), initialized_(False) |
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[814] | 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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[2125] | 33 | void RowAccumulator::reset(const uInt size, const uInt tsysSize) |
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[814] | 34 | { |
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[2125] | 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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[2135] | 54 | |
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| 55 | initialized_ = False; |
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[2125] | 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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[2135] | 60 | reset(size, tsysSize); |
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| 61 | initialized_ = True; |
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[2125] | 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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[2141] | 92 | const Bool inverseMask) |
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[2125] | 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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[2141] | 96 | if (inverseMask) mUse = !mUse; |
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[2125] | 97 | MaskedArray<Float> vadd(vUse, mUse); |
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[2141] | 98 | Float totalWeight = getTotalWeight(vadd, tsys, interval, time, inverseMask); |
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[2125] | 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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[2141] | 103 | if (inverseMask) { |
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[2125] | 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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[814] | 111 | } |
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| 112 | } |
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| 113 | |
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[2125] | 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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[2141] | 118 | const Bool inverseMask) |
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[814] | 119 | { |
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[2125] | 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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[2141] | 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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[2125] | 126 | |
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[2141] | 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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[2125] | 131 | |
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[2141] | 132 | totalWeight *= fac; |
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| 133 | } |
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[2125] | 134 | } |
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| 135 | |
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| 136 | return totalWeight; |
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[814] | 137 | } |
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| 138 | |
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[2141] | 139 | Float RowAccumulator::addTsys(const Vector<Float>& v, Bool inverseMask) |
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[814] | 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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[2141] | 144 | if (inverseMask) { |
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[2125] | 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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[814] | 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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[2141] | 155 | void RowAccumulator::addTime(Double t, Bool inverseMask) |
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[814] | 156 | { |
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[2141] | 157 | if (inverseMask) { |
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[2125] | 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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[814] | 162 | } |
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| 163 | |
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[2141] | 164 | Float RowAccumulator::addInterval(Double inter, Bool inverseMask) |
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[814] | 165 | { |
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| 166 | Float w = 1.0; |
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[2141] | 167 | if (inverseMask) { |
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[2125] | 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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[814] | 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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[2125] | 178 | Vector<Float> RowAccumulator::getSpectrum() const |
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[814] | 179 | { |
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| 180 | return (spectrum_/weightSum_).getArray(); |
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| 181 | } |
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| 182 | |
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[2125] | 183 | Double RowAccumulator::getTime() const |
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[814] | 184 | { |
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[2125] | 185 | return timeSum_/Float(max(n_)); |
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[814] | 186 | } |
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| 187 | |
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[2125] | 188 | Double RowAccumulator::getInterval() const |
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[814] | 189 | { |
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| 190 | return intervalSum_; |
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| 191 | } |
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| 192 | |
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[2125] | 193 | Vector<Bool> RowAccumulator::getMask() const |
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[814] | 194 | { |
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[1352] | 195 | // Return the "total" mask - False where no points have been accumulated. |
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[1398] | 196 | return (n_.getArray() > uInt(0)); |
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[814] | 197 | } |
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| 198 | |
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[2125] | 199 | Vector<Float> RowAccumulator::getTsys() const |
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[814] | 200 | { |
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[1314] | 201 | // @fixme this assumes tsys.nelements() == 1 |
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[1398] | 202 | return tsysSum_/Float(max(n_)); |
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[814] | 203 | } |
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| 204 | |
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[2125] | 205 | void RowAccumulator::setUserMask(const Vector<Bool>& m) |
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[814] | 206 | { |
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| 207 | userMask_.resize(); |
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| 208 | userMask_ = m; |
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| 209 | } |
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[1819] | 210 | |
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| 211 | // Added by TT check the state of RowAccumulator |
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[2125] | 212 | Bool RowAccumulator::state() const |
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[1819] | 213 | { |
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| 214 | return initialized_; |
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| 215 | } |
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| 216 | |
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[2125] | 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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