[2] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# SDMath.cc: A collection of single dish mathematical operations |
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| 3 | //#--------------------------------------------------------------------------- |
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| 4 | //# Copyright (C) 2004 |
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[125] | 5 | //# ATNF |
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[2] | 6 | //# |
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| 7 | //# This program is free software; you can redistribute it and/or modify it |
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| 8 | //# under the terms of the GNU General Public License as published by the Free |
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| 9 | //# Software Foundation; either version 2 of the License, or (at your option) |
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| 10 | //# any later version. |
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| 11 | //# |
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| 12 | //# This program is distributed in the hope that it will be useful, but |
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| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 15 | //# Public License for more details. |
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| 16 | //# |
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| 17 | //# You should have received a copy of the GNU General Public License along |
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| 18 | //# with this program; if not, write to the Free Software Foundation, Inc., |
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| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
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| 20 | //# |
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| 21 | //# Correspondence concerning this software should be addressed as follows: |
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| 22 | //# Internet email: Malte.Marquarding@csiro.au |
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| 23 | //# Postal address: Malte Marquarding, |
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| 24 | //# Australia Telescope National Facility, |
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| 25 | //# P.O. Box 76, |
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| 26 | //# Epping, NSW, 2121, |
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| 27 | //# AUSTRALIA |
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| 28 | //# |
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| 29 | //# $Id: |
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| 30 | //#--------------------------------------------------------------------------- |
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[38] | 31 | #include <vector> |
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| 32 | |
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[81] | 33 | #include <casa/aips.h> |
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| 34 | #include <casa/BasicSL/String.h> |
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| 35 | #include <casa/Arrays/IPosition.h> |
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| 36 | #include <casa/Arrays/Array.h> |
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[130] | 37 | #include <casa/Arrays/ArrayIter.h> |
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| 38 | #include <casa/Arrays/VectorIter.h> |
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[81] | 39 | #include <casa/Arrays/ArrayMath.h> |
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| 40 | #include <casa/Arrays/ArrayLogical.h> |
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| 41 | #include <casa/Arrays/MaskedArray.h> |
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| 42 | #include <casa/Arrays/MaskArrMath.h> |
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| 43 | #include <casa/Arrays/MaskArrLogi.h> |
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[234] | 44 | #include <casa/BasicMath/Math.h> |
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[221] | 45 | #include <casa/Containers/Block.h> |
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[262] | 46 | #include <casa/Exceptions.h> |
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| 47 | #include <casa/Quanta/Quantum.h> |
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| 48 | #include <casa/Quanta/Unit.h> |
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| 49 | #include <casa/Quanta/MVEpoch.h> |
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[221] | 50 | #include <casa/Quanta/QC.h> |
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[272] | 51 | #include <casa/Quanta/MVTime.h> |
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[177] | 52 | #include <casa/Utilities/Assert.h> |
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[2] | 53 | |
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[262] | 54 | #include <coordinates/Coordinates/SpectralCoordinate.h> |
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| 55 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 56 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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[309] | 57 | #include <coordinates/Coordinates/FrequencyAligner.h> |
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[262] | 58 | |
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| 59 | #include <lattices/Lattices/LatticeUtilities.h> |
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| 60 | #include <lattices/Lattices/RebinLattice.h> |
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| 61 | |
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| 62 | #include <measures/Measures/MEpoch.h> |
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| 63 | #include <measures/Measures/MDirection.h> |
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| 64 | #include <measures/Measures/MPosition.h> |
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| 65 | |
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[177] | 66 | #include <scimath/Mathematics/VectorKernel.h> |
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| 67 | #include <scimath/Mathematics/Convolver.h> |
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[227] | 68 | #include <scimath/Mathematics/InterpolateArray1D.h> |
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[234] | 69 | #include <scimath/Functionals/Polynomial.h> |
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[177] | 70 | |
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[81] | 71 | #include <tables/Tables/Table.h> |
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| 72 | #include <tables/Tables/ScalarColumn.h> |
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| 73 | #include <tables/Tables/ArrayColumn.h> |
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[227] | 74 | #include <tables/Tables/ReadAsciiTable.h> |
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[2] | 75 | |
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[38] | 76 | #include "MathUtils.h" |
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[232] | 77 | #include "SDDefs.h" |
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[2] | 78 | #include "SDContainer.h" |
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| 79 | #include "SDMemTable.h" |
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| 80 | |
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| 81 | #include "SDMath.h" |
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| 82 | |
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[125] | 83 | using namespace casa; |
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[83] | 84 | using namespace asap; |
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[2] | 85 | |
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[170] | 86 | |
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| 87 | SDMath::SDMath() |
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| 88 | {;} |
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| 89 | |
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[185] | 90 | SDMath::SDMath(const SDMath& other) |
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[170] | 91 | { |
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| 92 | |
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| 93 | // No state |
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| 94 | |
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| 95 | } |
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| 96 | |
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| 97 | SDMath& SDMath::operator=(const SDMath& other) |
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| 98 | { |
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| 99 | if (this != &other) { |
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| 100 | // No state |
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| 101 | } |
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| 102 | return *this; |
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| 103 | } |
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| 104 | |
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[183] | 105 | SDMath::~SDMath() |
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| 106 | {;} |
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[170] | 107 | |
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[183] | 108 | |
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[262] | 109 | |
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[309] | 110 | SDMemTable* SDMath::frequencyAlignment (const SDMemTable& in, const String& refTime) const |
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[262] | 111 | { |
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| 112 | |
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[309] | 113 | // Get frame info from Table |
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[262] | 114 | |
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| 115 | std::vector<std::string> info = in.getCoordInfo(); |
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[294] | 116 | |
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[309] | 117 | // Parse frequency system |
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[294] | 118 | |
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[309] | 119 | String systemStr(info[1]); |
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| 120 | String baseSystemStr(info[3]); |
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| 121 | if (baseSystemStr==systemStr) { |
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| 122 | throw(AipsError("You have not set a frequency frame different from the initial - use function set_freqframe")); |
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[262] | 123 | } |
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[309] | 124 | // |
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| 125 | MFrequency::Types freqSystem; |
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| 126 | MFrequency::getType(freqSystem, systemStr); |
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[294] | 127 | |
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[267] | 128 | // Do it |
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[262] | 129 | |
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[309] | 130 | return frequencyAlign (in, freqSystem, refTime); |
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[267] | 131 | } |
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[262] | 132 | |
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| 133 | |
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| 134 | |
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[185] | 135 | CountedPtr<SDMemTable> SDMath::average(const Block<CountedPtr<SDMemTable> >& in, |
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| 136 | const Vector<Bool>& mask, Bool scanAv, |
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[309] | 137 | const String& weightStr, Bool alignFreq) const |
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[130] | 138 | // |
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[144] | 139 | // Weighted averaging of spectra from one or more Tables. |
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[130] | 140 | // |
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| 141 | { |
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[2] | 142 | |
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[163] | 143 | // Convert weight type |
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| 144 | |
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| 145 | WeightType wtType = NONE; |
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[185] | 146 | convertWeightString(wtType, weightStr); |
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[163] | 147 | |
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[144] | 148 | // Create output Table by cloning from the first table |
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[2] | 149 | |
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[144] | 150 | SDMemTable* pTabOut = new SDMemTable(*in[0],True); |
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[130] | 151 | |
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[144] | 152 | // Setup |
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[130] | 153 | |
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[144] | 154 | IPosition shp = in[0]->rowAsMaskedArray(0).shape(); // Must not change |
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| 155 | Array<Float> arr(shp); |
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| 156 | Array<Bool> barr(shp); |
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[221] | 157 | const Bool useMask = (mask.nelements() == shp(asap::ChanAxis)); |
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[130] | 158 | |
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[144] | 159 | // Columns from Tables |
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[130] | 160 | |
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[144] | 161 | ROArrayColumn<Float> tSysCol; |
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| 162 | ROScalarColumn<Double> mjdCol; |
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| 163 | ROScalarColumn<String> srcNameCol; |
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| 164 | ROScalarColumn<Double> intCol; |
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| 165 | ROArrayColumn<uInt> fqIDCol; |
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[130] | 166 | |
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[144] | 167 | // Create accumulation MaskedArray. We accumulate for each channel,if,pol,beam |
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| 168 | // Note that the mask of the accumulation array will ALWAYS remain ALL True. |
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| 169 | // The MA is only used so that when data which is masked Bad is added to it, |
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| 170 | // that data does not contribute. |
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| 171 | |
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| 172 | Array<Float> zero(shp); |
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| 173 | zero=0.0; |
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| 174 | Array<Bool> good(shp); |
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| 175 | good = True; |
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| 176 | MaskedArray<Float> sum(zero,good); |
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| 177 | |
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| 178 | // Counter arrays |
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| 179 | |
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| 180 | Array<Float> nPts(shp); // Number of points |
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| 181 | nPts = 0.0; |
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| 182 | Array<Float> nInc(shp); // Increment |
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| 183 | nInc = 1.0; |
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| 184 | |
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| 185 | // Create accumulation Array for variance. We accumulate for |
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| 186 | // each if,pol,beam, but average over channel. So we need |
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| 187 | // a shape with one less axis dropping channels. |
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| 188 | |
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| 189 | const uInt nAxesSub = shp.nelements() - 1; |
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| 190 | IPosition shp2(nAxesSub); |
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| 191 | for (uInt i=0,j=0; i<(nAxesSub+1); i++) { |
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[221] | 192 | if (i!=asap::ChanAxis) { |
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[144] | 193 | shp2(j) = shp(i); |
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| 194 | j++; |
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| 195 | } |
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[2] | 196 | } |
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[144] | 197 | Array<Float> sumSq(shp2); |
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| 198 | sumSq = 0.0; |
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| 199 | IPosition pos2(nAxesSub,0); // For indexing |
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[130] | 200 | |
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[144] | 201 | // Time-related accumulators |
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[130] | 202 | |
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[144] | 203 | Double time; |
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| 204 | Double timeSum = 0.0; |
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| 205 | Double intSum = 0.0; |
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| 206 | Double interval = 0.0; |
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[130] | 207 | |
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[144] | 208 | // To get the right shape for the Tsys accumulator we need to |
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| 209 | // access a column from the first table. The shape of this |
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| 210 | // array must not change |
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[130] | 211 | |
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[144] | 212 | Array<Float> tSysSum; |
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| 213 | { |
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| 214 | const Table& tabIn = in[0]->table(); |
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| 215 | tSysCol.attach(tabIn,"TSYS"); |
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| 216 | tSysSum.resize(tSysCol.shape(0)); |
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| 217 | } |
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| 218 | tSysSum =0.0; |
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| 219 | Array<Float> tSys; |
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| 220 | |
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| 221 | // Scan and row tracking |
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| 222 | |
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| 223 | Int oldScanID = 0; |
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| 224 | Int outScanID = 0; |
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| 225 | Int scanID = 0; |
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| 226 | Int rowStart = 0; |
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| 227 | Int nAccum = 0; |
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| 228 | Int tableStart = 0; |
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| 229 | |
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| 230 | // Source and FreqID |
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| 231 | |
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| 232 | String sourceName, oldSourceName, sourceNameStart; |
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| 233 | Vector<uInt> freqID, freqIDStart, oldFreqID; |
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| 234 | |
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| 235 | // Loop over tables |
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| 236 | |
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| 237 | Float fac = 1.0; |
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| 238 | const uInt nTables = in.nelements(); |
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| 239 | for (uInt iTab=0; iTab<nTables; iTab++) { |
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| 240 | |
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[309] | 241 | // Should check that the frequency tables don't change if doing FreqAlignment |
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[221] | 242 | |
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[144] | 243 | // Attach columns to Table |
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| 244 | |
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| 245 | const Table& tabIn = in[iTab]->table(); |
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| 246 | tSysCol.attach(tabIn, "TSYS"); |
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| 247 | mjdCol.attach(tabIn, "TIME"); |
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| 248 | srcNameCol.attach(tabIn, "SRCNAME"); |
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| 249 | intCol.attach(tabIn, "INTERVAL"); |
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| 250 | fqIDCol.attach(tabIn, "FREQID"); |
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| 251 | |
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| 252 | // Loop over rows in Table |
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| 253 | |
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| 254 | const uInt nRows = in[iTab]->nRow(); |
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| 255 | for (uInt iRow=0; iRow<nRows; iRow++) { |
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| 256 | |
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| 257 | // Check conformance |
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| 258 | |
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| 259 | IPosition shp2 = in[iTab]->rowAsMaskedArray(iRow).shape(); |
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| 260 | if (!shp.isEqual(shp2)) { |
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| 261 | throw (AipsError("Shapes for all rows must be the same")); |
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| 262 | } |
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| 263 | |
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| 264 | // If we are not doing scan averages, make checks for source and |
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| 265 | // frequency setup and warn if averaging across them |
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| 266 | |
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| 267 | // Get copy of Scan Container for this row |
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| 268 | |
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| 269 | SDContainer sc = in[iTab]->getSDContainer(iRow); |
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| 270 | scanID = sc.scanid; |
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| 271 | |
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| 272 | // Get quantities from columns |
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| 273 | |
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| 274 | srcNameCol.getScalar(iRow, sourceName); |
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| 275 | mjdCol.get(iRow, time); |
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| 276 | tSysCol.get(iRow, tSys); |
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| 277 | intCol.get(iRow, interval); |
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| 278 | fqIDCol.get(iRow, freqID); |
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| 279 | |
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| 280 | // Initialize first source and freqID |
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| 281 | |
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| 282 | if (iRow==0 && iTab==0) { |
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| 283 | sourceNameStart = sourceName; |
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| 284 | freqIDStart = freqID; |
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| 285 | } |
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| 286 | |
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| 287 | // If we are doing scan averages, see if we are at the end of an |
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| 288 | // accumulation period (scan). We must check soutce names too, |
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| 289 | // since we might have two tables with one scan each but different |
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| 290 | // source names; we shouldn't average different sources together |
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| 291 | |
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| 292 | if (scanAv && ( (scanID != oldScanID) || |
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| 293 | (iRow==0 && iTab>0 && sourceName!=oldSourceName))) { |
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| 294 | |
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| 295 | // Normalize data in 'sum' accumulation array according to weighting scheme |
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| 296 | |
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[221] | 297 | normalize(sum, sumSq, nPts, wtType, asap::ChanAxis, nAxesSub); |
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[144] | 298 | |
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| 299 | // Fill scan container. The source and freqID come from the |
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| 300 | // first row of the first table that went into this average ( |
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| 301 | // should be the same for all rows in the scan average) |
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| 302 | |
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| 303 | Float nR(nAccum); |
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[185] | 304 | fillSDC(sc, sum.getMask(), sum.getArray(), tSysSum/nR, outScanID, |
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[144] | 305 | timeSum/nR, intSum, sourceNameStart, freqIDStart); |
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| 306 | |
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| 307 | // Write container out to Table |
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| 308 | |
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| 309 | pTabOut->putSDContainer(sc); |
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| 310 | |
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| 311 | // Reset accumulators |
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| 312 | |
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| 313 | sum = 0.0; |
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| 314 | sumSq = 0.0; |
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| 315 | nAccum = 0; |
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| 316 | // |
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| 317 | tSysSum =0.0; |
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| 318 | timeSum = 0.0; |
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| 319 | intSum = 0.0; |
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[221] | 320 | nPts = 0.0; |
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[144] | 321 | |
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| 322 | // Increment |
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| 323 | |
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| 324 | rowStart = iRow; // First row for next accumulation |
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| 325 | tableStart = iTab; // First table for next accumulation |
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| 326 | sourceNameStart = sourceName; // First source name for next accumulation |
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| 327 | freqIDStart = freqID; // First FreqID for next accumulation |
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| 328 | // |
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| 329 | oldScanID = scanID; |
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| 330 | outScanID += 1; // Scan ID for next accumulation period |
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[227] | 331 | } |
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[144] | 332 | |
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[146] | 333 | // Accumulate |
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[144] | 334 | |
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[185] | 335 | accumulate(timeSum, intSum, nAccum, sum, sumSq, nPts, tSysSum, |
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[221] | 336 | tSys, nInc, mask, time, interval, in, iTab, iRow, asap::ChanAxis, |
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[146] | 337 | nAxesSub, useMask, wtType); |
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[144] | 338 | // |
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| 339 | oldSourceName = sourceName; |
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| 340 | oldFreqID = freqID; |
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[184] | 341 | } |
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[144] | 342 | } |
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| 343 | |
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| 344 | // OK at this point we have accumulation data which is either |
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| 345 | // - accumulated from all tables into one row |
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| 346 | // or |
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| 347 | // - accumulated from the last scan average |
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| 348 | // |
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| 349 | // Normalize data in 'sum' accumulation array according to weighting scheme |
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[221] | 350 | normalize(sum, sumSq, nPts, wtType, asap::ChanAxis, nAxesSub); |
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[144] | 351 | |
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| 352 | // Create and fill container. The container we clone will be from |
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| 353 | // the last Table and the first row that went into the current |
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| 354 | // accumulation. It probably doesn't matter that much really... |
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| 355 | |
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| 356 | Float nR(nAccum); |
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| 357 | SDContainer sc = in[tableStart]->getSDContainer(rowStart); |
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[185] | 358 | fillSDC(sc, sum.getMask(), sum.getArray(), tSysSum/nR, outScanID, |
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[144] | 359 | timeSum/nR, intSum, sourceNameStart, freqIDStart); |
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[221] | 360 | pTabOut->putSDContainer(sc); |
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[304] | 361 | pTabOut->resetCursor(); |
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[144] | 362 | // |
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| 363 | return CountedPtr<SDMemTable>(pTabOut); |
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[2] | 364 | } |
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[9] | 365 | |
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[144] | 366 | |
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| 367 | |
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[248] | 368 | CountedPtr<SDMemTable> SDMath::binaryOperate (const CountedPtr<SDMemTable>& left, |
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| 369 | const CountedPtr<SDMemTable>& right, |
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[294] | 370 | const String& op, Bool preserve, |
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| 371 | Bool doTSys) const |
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[185] | 372 | { |
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[85] | 373 | |
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[248] | 374 | // Check operator |
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[130] | 375 | |
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[234] | 376 | String op2(op); |
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| 377 | op2.upcase(); |
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| 378 | uInt what = 0; |
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| 379 | if (op2=="ADD") { |
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| 380 | what = 0; |
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| 381 | } else if (op2=="SUB") { |
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| 382 | what = 1; |
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| 383 | } else if (op2=="MUL") { |
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| 384 | what = 2; |
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| 385 | } else if (op2=="DIV") { |
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| 386 | what = 3; |
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[248] | 387 | } else if (op2=="QUOTIENT") { |
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| 388 | what = 4; |
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[294] | 389 | doTSys = True; |
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[234] | 390 | } else { |
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[248] | 391 | throw( AipsError("Unrecognized operation")); |
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[234] | 392 | } |
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| 393 | |
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| 394 | // Check rows |
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| 395 | |
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[248] | 396 | const uInt nRowLeft = left->nRow(); |
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| 397 | const uInt nRowRight = right->nRow(); |
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| 398 | Bool ok = (nRowRight==1&&nRowLeft>0) || |
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| 399 | (nRowRight>=1&&nRowLeft==nRowRight); |
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| 400 | if (!ok) { |
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| 401 | throw (AipsError("The right Scan Table can have one row or the same number of rows as the left Scan Table")); |
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[234] | 402 | } |
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| 403 | |
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[248] | 404 | // Input Tables |
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[234] | 405 | |
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| 406 | const Table& tLeft = left->table(); |
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| 407 | const Table& tRight = right->table(); |
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[248] | 408 | |
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| 409 | // TSys columns |
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| 410 | |
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[294] | 411 | ROArrayColumn<Float> tSysLeftCol, tSysRightCol; |
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| 412 | if (doTSys) { |
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| 413 | tSysLeftCol.attach(tLeft, "TSYS"); |
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| 414 | tSysRightCol.attach(tRight, "TSYS"); |
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| 415 | } |
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[234] | 416 | |
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[248] | 417 | // First row for right |
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[234] | 418 | |
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[248] | 419 | Array<Float> tSysLeftArr, tSysRightArr; |
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[294] | 420 | if (doTSys) tSysRightCol.get(0, tSysRightArr); |
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[248] | 421 | MaskedArray<Float>* pMRight = new MaskedArray<Float>(right->rowAsMaskedArray(0)); |
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| 422 | IPosition shpRight = pMRight->shape(); |
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| 423 | |
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| 424 | // Output Table cloned from left |
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| 425 | |
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[234] | 426 | SDMemTable* pTabOut = new SDMemTable(*left, True); |
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| 427 | |
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| 428 | // Loop over rows |
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| 429 | |
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[248] | 430 | for (uInt i=0; i<nRowLeft; i++) { |
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[234] | 431 | |
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| 432 | // Get data |
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[248] | 433 | |
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[234] | 434 | MaskedArray<Float> mLeft(left->rowAsMaskedArray(i)); |
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[248] | 435 | IPosition shpLeft = mLeft.shape(); |
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[294] | 436 | if (doTSys) tSysLeftCol.get(i, tSysLeftArr); |
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[234] | 437 | // |
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[248] | 438 | if (nRowRight>1) { |
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| 439 | delete pMRight; |
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| 440 | pMRight = new MaskedArray<Float>(right->rowAsMaskedArray(i)); |
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| 441 | shpRight = pMRight->shape(); |
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[294] | 442 | if (doTSys) tSysRightCol.get(i, tSysRightArr); |
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[234] | 443 | } |
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[248] | 444 | // |
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| 445 | if (!shpRight.isEqual(shpLeft)) { |
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| 446 | throw(AipsError("left and right scan tables are not conformant")); |
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| 447 | } |
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[294] | 448 | if (doTSys) { |
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| 449 | if (!tSysRightArr.shape().isEqual(tSysRightArr.shape())) { |
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| 450 | throw(AipsError("left and right Tsys data are not conformant")); |
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| 451 | } |
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| 452 | if (!shpRight.isEqual(tSysRightArr.shape())) { |
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| 453 | throw(AipsError("left and right scan tables are not conformant")); |
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| 454 | } |
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[248] | 455 | } |
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[234] | 456 | |
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| 457 | // Make container |
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| 458 | |
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| 459 | SDContainer sc = left->getSDContainer(i); |
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| 460 | |
---|
| 461 | // Operate on data and TSys |
---|
| 462 | |
---|
| 463 | if (what==0) { |
---|
[248] | 464 | MaskedArray<Float> tmp = mLeft + *pMRight; |
---|
[234] | 465 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
[294] | 466 | if (doTSys) sc.putTsys(tSysLeftArr+tSysRightArr); |
---|
[234] | 467 | } else if (what==1) { |
---|
[248] | 468 | MaskedArray<Float> tmp = mLeft - *pMRight; |
---|
[234] | 469 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
[294] | 470 | if (doTSys) sc.putTsys(tSysLeftArr-tSysRightArr); |
---|
[234] | 471 | } else if (what==2) { |
---|
[248] | 472 | MaskedArray<Float> tmp = mLeft * *pMRight; |
---|
[234] | 473 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
[294] | 474 | if (doTSys) sc.putTsys(tSysLeftArr*tSysRightArr); |
---|
[234] | 475 | } else if (what==3) { |
---|
[248] | 476 | MaskedArray<Float> tmp = mLeft / *pMRight; |
---|
[234] | 477 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
[294] | 478 | if (doTSys) sc.putTsys(tSysLeftArr/tSysRightArr); |
---|
[248] | 479 | } else if (what==4) { |
---|
| 480 | if (preserve) { |
---|
| 481 | MaskedArray<Float> tmp = (tSysRightArr * mLeft / *pMRight) - tSysRightArr; |
---|
| 482 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
| 483 | } else { |
---|
| 484 | MaskedArray<Float> tmp = (tSysRightArr * mLeft / *pMRight) - tSysLeftArr; |
---|
| 485 | putDataInSDC(sc, tmp.getArray(), tmp.getMask()); |
---|
| 486 | } |
---|
| 487 | sc.putTsys(tSysRightArr); |
---|
[234] | 488 | } |
---|
| 489 | |
---|
| 490 | // Put new row in output Table |
---|
| 491 | |
---|
[171] | 492 | pTabOut->putSDContainer(sc); |
---|
[130] | 493 | } |
---|
[248] | 494 | if (pMRight) delete pMRight; |
---|
[304] | 495 | pTabOut->resetCursor(); |
---|
[130] | 496 | // |
---|
[171] | 497 | return CountedPtr<SDMemTable>(pTabOut); |
---|
[9] | 498 | } |
---|
[48] | 499 | |
---|
[146] | 500 | |
---|
| 501 | |
---|
[185] | 502 | std::vector<float> SDMath::statistic(const CountedPtr<SDMemTable>& in, |
---|
[234] | 503 | const Vector<Bool>& mask, |
---|
| 504 | const String& which, Int row) const |
---|
[130] | 505 | // |
---|
| 506 | // Perhaps iteration over pol/beam/if should be in here |
---|
| 507 | // and inside the nrow iteration ? |
---|
| 508 | // |
---|
| 509 | { |
---|
| 510 | const uInt nRow = in->nRow(); |
---|
| 511 | |
---|
| 512 | // Specify cursor location |
---|
| 513 | |
---|
[152] | 514 | IPosition start, end; |
---|
[185] | 515 | getCursorLocation(start, end, *in); |
---|
[130] | 516 | |
---|
| 517 | // Loop over rows |
---|
| 518 | |
---|
[234] | 519 | const uInt nEl = mask.nelements(); |
---|
| 520 | uInt iStart = 0; |
---|
| 521 | uInt iEnd = in->nRow()-1; |
---|
| 522 | // |
---|
| 523 | if (row>=0) { |
---|
| 524 | iStart = row; |
---|
| 525 | iEnd = row; |
---|
| 526 | } |
---|
| 527 | // |
---|
| 528 | std::vector<float> result(iEnd-iStart+1); |
---|
| 529 | for (uInt ii=iStart; ii <= iEnd; ++ii) { |
---|
[130] | 530 | |
---|
| 531 | // Get row and deconstruct |
---|
| 532 | |
---|
| 533 | MaskedArray<Float> marr(in->rowAsMaskedArray(ii)); |
---|
| 534 | Array<Float> arr = marr.getArray(); |
---|
| 535 | Array<Bool> barr = marr.getMask(); |
---|
| 536 | |
---|
| 537 | // Access desired piece of data |
---|
| 538 | |
---|
| 539 | Array<Float> v((arr(start,end)).nonDegenerate()); |
---|
| 540 | Array<Bool> m((barr(start,end)).nonDegenerate()); |
---|
| 541 | |
---|
| 542 | // Apply OTF mask |
---|
| 543 | |
---|
| 544 | MaskedArray<Float> tmp; |
---|
| 545 | if (m.nelements()==nEl) { |
---|
[234] | 546 | tmp.setData(v,m&&mask); |
---|
[130] | 547 | } else { |
---|
| 548 | tmp.setData(v,m); |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | // Get statistic |
---|
| 552 | |
---|
[234] | 553 | result[ii-iStart] = mathutil::statistics(which, tmp); |
---|
[130] | 554 | } |
---|
| 555 | // |
---|
| 556 | return result; |
---|
| 557 | } |
---|
| 558 | |
---|
[146] | 559 | |
---|
[234] | 560 | SDMemTable* SDMath::bin(const SDMemTable& in, Int width) const |
---|
[144] | 561 | { |
---|
[169] | 562 | SDHeader sh = in.getSDHeader(); |
---|
| 563 | SDMemTable* pTabOut = new SDMemTable(in, True); |
---|
[163] | 564 | |
---|
[169] | 565 | // Bin up SpectralCoordinates |
---|
[163] | 566 | |
---|
[169] | 567 | IPosition factors(1); |
---|
| 568 | factors(0) = width; |
---|
| 569 | for (uInt j=0; j<in.nCoordinates(); ++j) { |
---|
| 570 | CoordinateSystem cSys; |
---|
[288] | 571 | cSys.addCoordinate(in.getSpectralCoordinate(j)); |
---|
[169] | 572 | CoordinateSystem cSysBin = |
---|
[185] | 573 | CoordinateUtil::makeBinnedCoordinateSystem(factors, cSys, False); |
---|
[169] | 574 | // |
---|
| 575 | SpectralCoordinate sCBin = cSysBin.spectralCoordinate(0); |
---|
| 576 | pTabOut->setCoordinate(sCBin, j); |
---|
| 577 | } |
---|
[163] | 578 | |
---|
[169] | 579 | // Use RebinLattice to find shape |
---|
[130] | 580 | |
---|
[169] | 581 | IPosition shapeIn(1,sh.nchan); |
---|
[185] | 582 | IPosition shapeOut = RebinLattice<Float>::rebinShape(shapeIn, factors); |
---|
[169] | 583 | sh.nchan = shapeOut(0); |
---|
| 584 | pTabOut->putSDHeader(sh); |
---|
[144] | 585 | |
---|
[169] | 586 | // Loop over rows and bin along channel axis |
---|
| 587 | |
---|
| 588 | for (uInt i=0; i < in.nRow(); ++i) { |
---|
| 589 | SDContainer sc = in.getSDContainer(i); |
---|
[144] | 590 | // |
---|
[169] | 591 | Array<Float> tSys(sc.getTsys()); // Get it out before sc changes shape |
---|
[144] | 592 | |
---|
[169] | 593 | // Bin up spectrum |
---|
[144] | 594 | |
---|
[169] | 595 | MaskedArray<Float> marr(in.rowAsMaskedArray(i)); |
---|
| 596 | MaskedArray<Float> marrout; |
---|
[221] | 597 | LatticeUtilities::bin(marrout, marr, asap::ChanAxis, width); |
---|
[144] | 598 | |
---|
[169] | 599 | // Put back the binned data and flags |
---|
[144] | 600 | |
---|
[169] | 601 | IPosition ip2 = marrout.shape(); |
---|
| 602 | sc.resize(ip2); |
---|
[146] | 603 | // |
---|
[185] | 604 | putDataInSDC(sc, marrout.getArray(), marrout.getMask()); |
---|
[146] | 605 | |
---|
[169] | 606 | // Bin up Tsys. |
---|
[146] | 607 | |
---|
[169] | 608 | Array<Bool> allGood(tSys.shape(),True); |
---|
| 609 | MaskedArray<Float> tSysIn(tSys, allGood, True); |
---|
[146] | 610 | // |
---|
[169] | 611 | MaskedArray<Float> tSysOut; |
---|
[221] | 612 | LatticeUtilities::bin(tSysOut, tSysIn, asap::ChanAxis, width); |
---|
[169] | 613 | sc.putTsys(tSysOut.getArray()); |
---|
[146] | 614 | // |
---|
[169] | 615 | pTabOut->putSDContainer(sc); |
---|
| 616 | } |
---|
| 617 | return pTabOut; |
---|
[146] | 618 | } |
---|
| 619 | |
---|
[299] | 620 | SDMemTable* SDMath::resample (const SDMemTable& in, const String& methodStr, |
---|
| 621 | Float width) const |
---|
| 622 | // |
---|
| 623 | // Should add the possibility of width being specified in km/s. This means |
---|
| 624 | // that for each freqID (SpectralCoordinate) we will need to convert to an |
---|
| 625 | // average channel width (say at the reference pixel). Then we would need |
---|
| 626 | // to be careful to make sure each spectrum (of different freqID) |
---|
| 627 | // is the same length. |
---|
| 628 | // |
---|
| 629 | { |
---|
| 630 | Bool doVel = False; |
---|
[309] | 631 | if (doVel) { |
---|
| 632 | for (uInt j=0; j<in.nCoordinates(); ++j) { |
---|
| 633 | SpectralCoordinate sC = in.getSpectralCoordinate(j); |
---|
| 634 | } |
---|
| 635 | } |
---|
[299] | 636 | |
---|
[309] | 637 | |
---|
[299] | 638 | // Interpolation method |
---|
| 639 | |
---|
| 640 | Int interpMethod = 0; |
---|
| 641 | convertInterpString(interpMethod, methodStr); |
---|
| 642 | |
---|
| 643 | // Make output table |
---|
| 644 | |
---|
| 645 | SDMemTable* pTabOut = new SDMemTable(in, True); |
---|
| 646 | |
---|
| 647 | // Resample SpectralCoordinates (one per freqID) |
---|
| 648 | |
---|
| 649 | const uInt nCoord = in.nCoordinates(); |
---|
| 650 | Vector<Float> offset(1,0.0); |
---|
| 651 | Vector<Float> factors(1,1.0/width); |
---|
| 652 | Vector<Int> newShape; |
---|
| 653 | for (uInt j=0; j<in.nCoordinates(); ++j) { |
---|
| 654 | CoordinateSystem cSys; |
---|
| 655 | cSys.addCoordinate(in.getSpectralCoordinate(j)); |
---|
| 656 | CoordinateSystem cSys2 = cSys.subImage(offset, factors, newShape); |
---|
| 657 | SpectralCoordinate sC = cSys2.spectralCoordinate(0); |
---|
| 658 | // |
---|
| 659 | pTabOut->setCoordinate(sC, j); |
---|
| 660 | } |
---|
| 661 | |
---|
| 662 | // Get header |
---|
| 663 | |
---|
| 664 | SDHeader sh = in.getSDHeader(); |
---|
| 665 | |
---|
| 666 | // Generate resampling vectors |
---|
| 667 | |
---|
| 668 | const uInt nChanIn = sh.nchan; |
---|
| 669 | Vector<Float> xIn(nChanIn); |
---|
| 670 | indgen(xIn); |
---|
| 671 | // |
---|
| 672 | Int fac = Int(nChanIn/width); |
---|
| 673 | Vector<Float> xOut(fac+10); // 10 to be safe - resize later |
---|
| 674 | uInt i = 0; |
---|
| 675 | Float x = 0.0; |
---|
| 676 | Bool more = True; |
---|
| 677 | while (more) { |
---|
| 678 | xOut(i) = x; |
---|
| 679 | // |
---|
| 680 | i++; |
---|
| 681 | x += width; |
---|
| 682 | if (x>nChanIn-1) more = False; |
---|
| 683 | } |
---|
| 684 | const uInt nChanOut = i; |
---|
| 685 | xOut.resize(nChanOut,True); |
---|
| 686 | // |
---|
| 687 | IPosition shapeIn(in.rowAsMaskedArray(0).shape()); |
---|
| 688 | sh.nchan = nChanOut; |
---|
| 689 | pTabOut->putSDHeader(sh); |
---|
| 690 | |
---|
| 691 | // Loop over rows and resample along channel axis |
---|
| 692 | |
---|
| 693 | Array<Float> valuesOut; |
---|
| 694 | Array<Bool> maskOut; |
---|
| 695 | Array<Float> tSysOut; |
---|
| 696 | Array<Bool> tSysMaskIn(shapeIn,True); |
---|
| 697 | Array<Bool> tSysMaskOut; |
---|
| 698 | for (uInt i=0; i < in.nRow(); ++i) { |
---|
| 699 | |
---|
| 700 | // Get container |
---|
| 701 | |
---|
| 702 | SDContainer sc = in.getSDContainer(i); |
---|
| 703 | |
---|
| 704 | // Get data and Tsys |
---|
| 705 | |
---|
| 706 | const Array<Float>& tSysIn = sc.getTsys(); |
---|
| 707 | const MaskedArray<Float>& dataIn(in.rowAsMaskedArray(i)); |
---|
| 708 | Array<Float> valuesIn = dataIn.getArray(); |
---|
| 709 | Array<Bool> maskIn = dataIn.getMask(); |
---|
| 710 | |
---|
| 711 | // Interpolate data |
---|
| 712 | |
---|
| 713 | InterpolateArray1D<Float,Float>::interpolate(valuesOut, maskOut, xOut, |
---|
| 714 | xIn, valuesIn, maskIn, |
---|
| 715 | interpMethod, True, True); |
---|
| 716 | sc.resize(valuesOut.shape()); |
---|
| 717 | putDataInSDC(sc, valuesOut, maskOut); |
---|
| 718 | |
---|
| 719 | // Interpolate TSys |
---|
| 720 | |
---|
| 721 | InterpolateArray1D<Float,Float>::interpolate(tSysOut, tSysMaskOut, xOut, |
---|
| 722 | xIn, tSysIn, tSysMaskIn, |
---|
| 723 | interpMethod, True, True); |
---|
| 724 | sc.putTsys(tSysOut); |
---|
| 725 | |
---|
| 726 | // Put container in output |
---|
| 727 | |
---|
| 728 | pTabOut->putSDContainer(sc); |
---|
| 729 | } |
---|
| 730 | // |
---|
| 731 | return pTabOut; |
---|
| 732 | } |
---|
| 733 | |
---|
[248] | 734 | SDMemTable* SDMath::unaryOperate(const SDMemTable& in, Float val, Bool doAll, |
---|
[294] | 735 | uInt what, Bool doTSys) const |
---|
[152] | 736 | // |
---|
| 737 | // what = 0 Multiply |
---|
| 738 | // 1 Add |
---|
[146] | 739 | { |
---|
[152] | 740 | SDMemTable* pOut = new SDMemTable(in,False); |
---|
| 741 | const Table& tOut = pOut->table(); |
---|
[294] | 742 | ArrayColumn<Float> specCol(tOut,"SPECTRA"); |
---|
| 743 | ArrayColumn<Float> tSysCol(tOut,"TSYS"); |
---|
| 744 | Array<Float> tSysArr; |
---|
[146] | 745 | // |
---|
[152] | 746 | if (doAll) { |
---|
| 747 | for (uInt i=0; i < tOut.nrow(); i++) { |
---|
[294] | 748 | |
---|
| 749 | // Modify data |
---|
| 750 | |
---|
[270] | 751 | MaskedArray<Float> dataIn(pOut->rowAsMaskedArray(i)); |
---|
[152] | 752 | if (what==0) { |
---|
[270] | 753 | dataIn *= val; |
---|
[152] | 754 | } else if (what==1) { |
---|
[270] | 755 | dataIn += val; |
---|
[152] | 756 | } |
---|
[294] | 757 | specCol.put(i, dataIn.getArray()); |
---|
| 758 | |
---|
| 759 | // Modify Tsys |
---|
| 760 | |
---|
| 761 | if (doTSys) { |
---|
| 762 | tSysCol.get(i, tSysArr); |
---|
| 763 | if (what==0) { |
---|
| 764 | tSysArr *= val; |
---|
| 765 | } else if (what==1) { |
---|
| 766 | tSysArr += val; |
---|
| 767 | } |
---|
| 768 | tSysCol.put(i, tSysArr); |
---|
| 769 | } |
---|
[152] | 770 | } |
---|
| 771 | } else { |
---|
| 772 | |
---|
| 773 | // Get cursor location |
---|
| 774 | |
---|
| 775 | IPosition start, end; |
---|
[185] | 776 | getCursorLocation(start, end, in); |
---|
[152] | 777 | // |
---|
| 778 | for (uInt i=0; i < tOut.nrow(); i++) { |
---|
[294] | 779 | |
---|
| 780 | // Modify data |
---|
| 781 | |
---|
[152] | 782 | MaskedArray<Float> dataIn(pOut->rowAsMaskedArray(i)); |
---|
[270] | 783 | MaskedArray<Float> dataIn2 = dataIn(start,end); // Reference |
---|
[152] | 784 | if (what==0) { |
---|
[270] | 785 | dataIn2 *= val; |
---|
[152] | 786 | } else if (what==1) { |
---|
[270] | 787 | dataIn2 += val; |
---|
[152] | 788 | } |
---|
[294] | 789 | specCol.put(i, dataIn.getArray()); |
---|
| 790 | |
---|
| 791 | // Modify Tsys |
---|
| 792 | |
---|
| 793 | if (doTSys) { |
---|
| 794 | tSysCol.get(i, tSysArr); |
---|
| 795 | Array<Float> tSysArr2 = tSysArr(start,end); // Reference |
---|
| 796 | if (what==0) { |
---|
| 797 | tSysArr2 *= val; |
---|
| 798 | } else if (what==1) { |
---|
| 799 | tSysArr2 += val; |
---|
| 800 | } |
---|
| 801 | tSysCol.put(i, tSysArr); |
---|
| 802 | } |
---|
[152] | 803 | } |
---|
| 804 | } |
---|
| 805 | // |
---|
[146] | 806 | return pOut; |
---|
| 807 | } |
---|
| 808 | |
---|
| 809 | |
---|
[152] | 810 | |
---|
[315] | 811 | SDMemTable* SDMath::averagePol(const SDMemTable& in, const Vector<Bool>& mask, |
---|
| 812 | const String& weightStr) const |
---|
[152] | 813 | // |
---|
[165] | 814 | // Average all polarizations together, weighted by variance |
---|
| 815 | // |
---|
| 816 | { |
---|
[315] | 817 | WeightType wtType = NONE; |
---|
| 818 | convertWeightString(wtType, weightStr); |
---|
[165] | 819 | |
---|
| 820 | const uInt nRows = in.nRow(); |
---|
| 821 | |
---|
| 822 | // Create output Table and reshape number of polarizations |
---|
| 823 | |
---|
| 824 | Bool clear=True; |
---|
| 825 | SDMemTable* pTabOut = new SDMemTable(in, clear); |
---|
| 826 | SDHeader header = pTabOut->getSDHeader(); |
---|
| 827 | header.npol = 1; |
---|
| 828 | pTabOut->putSDHeader(header); |
---|
| 829 | |
---|
| 830 | // Shape of input and output data |
---|
| 831 | |
---|
| 832 | const IPosition& shapeIn = in.rowAsMaskedArray(0u, False).shape(); |
---|
| 833 | IPosition shapeOut(shapeIn); |
---|
[262] | 834 | shapeOut(asap::PolAxis) = 1; // Average all polarizations |
---|
[315] | 835 | if (shapeIn(asap::PolAxis)==1) { |
---|
| 836 | throw(AipsError("The input has only one polarisation")); |
---|
| 837 | } |
---|
[165] | 838 | // |
---|
[262] | 839 | const uInt nChan = shapeIn(asap::ChanAxis); |
---|
[165] | 840 | const IPosition vecShapeOut(4,1,1,1,nChan); // A multi-dim form of a Vector shape |
---|
| 841 | IPosition start(4), end(4); |
---|
| 842 | |
---|
| 843 | // Output arrays |
---|
| 844 | |
---|
| 845 | Array<Float> outData(shapeOut, 0.0); |
---|
| 846 | Array<Bool> outMask(shapeOut, True); |
---|
[262] | 847 | const IPosition axes(2, asap::PolAxis, asap::ChanAxis); // pol-channel plane |
---|
[165] | 848 | // |
---|
[262] | 849 | const Bool useMask = (mask.nelements() == shapeIn(asap::ChanAxis)); |
---|
[165] | 850 | |
---|
| 851 | // Loop over rows |
---|
| 852 | |
---|
| 853 | for (uInt iRow=0; iRow<nRows; iRow++) { |
---|
| 854 | |
---|
| 855 | // Get data for this row |
---|
| 856 | |
---|
| 857 | MaskedArray<Float> marr(in.rowAsMaskedArray(iRow)); |
---|
| 858 | Array<Float>& arr = marr.getRWArray(); |
---|
| 859 | const Array<Bool>& barr = marr.getMask(); |
---|
| 860 | |
---|
| 861 | // Make iterators to iterate by pol-channel planes |
---|
| 862 | |
---|
| 863 | ReadOnlyArrayIterator<Float> itDataPlane(arr, axes); |
---|
| 864 | ReadOnlyArrayIterator<Bool> itMaskPlane(barr, axes); |
---|
| 865 | |
---|
| 866 | // Accumulations |
---|
| 867 | |
---|
| 868 | Float fac = 1.0; |
---|
| 869 | Vector<Float> vecSum(nChan,0.0); |
---|
| 870 | |
---|
| 871 | // Iterate through data by pol-channel planes |
---|
| 872 | |
---|
| 873 | while (!itDataPlane.pastEnd()) { |
---|
| 874 | |
---|
| 875 | // Iterate through plane by polarization and accumulate Vectors |
---|
| 876 | |
---|
| 877 | Vector<Float> t1(nChan); t1 = 0.0; |
---|
| 878 | Vector<Bool> t2(nChan); t2 = True; |
---|
| 879 | MaskedArray<Float> vecSum(t1,t2); |
---|
[315] | 880 | Float norm = 0.0; |
---|
[165] | 881 | { |
---|
| 882 | ReadOnlyVectorIterator<Float> itDataVec(itDataPlane.array(), 1); |
---|
| 883 | ReadOnlyVectorIterator<Bool> itMaskVec(itMaskPlane.array(), 1); |
---|
| 884 | while (!itDataVec.pastEnd()) { |
---|
| 885 | |
---|
[315] | 886 | // Create MA of data & mask (optionally including OTF mask) and get variance for this spectrum |
---|
[165] | 887 | |
---|
| 888 | if (useMask) { |
---|
| 889 | const MaskedArray<Float> spec(itDataVec.vector(),mask&&itMaskVec.vector()); |
---|
[315] | 890 | if (wtType==VAR) fac = 1.0 / variance(spec); |
---|
[165] | 891 | } else { |
---|
| 892 | const MaskedArray<Float> spec(itDataVec.vector(),itMaskVec.vector()); |
---|
[315] | 893 | if (wtType==VAR) fac = 1.0 / variance(spec); |
---|
[165] | 894 | } |
---|
| 895 | |
---|
| 896 | // Normalize spectrum (without OTF mask) and accumulate |
---|
| 897 | |
---|
| 898 | const MaskedArray<Float> spec(fac*itDataVec.vector(), itMaskVec.vector()); |
---|
| 899 | vecSum += spec; |
---|
[315] | 900 | norm += fac; |
---|
[165] | 901 | |
---|
| 902 | // Next |
---|
| 903 | |
---|
| 904 | itDataVec.next(); |
---|
| 905 | itMaskVec.next(); |
---|
| 906 | } |
---|
| 907 | } |
---|
| 908 | |
---|
| 909 | // Normalize summed spectrum |
---|
| 910 | |
---|
[315] | 911 | vecSum /= norm; |
---|
[165] | 912 | |
---|
| 913 | // FInd position in input data array. We are iterating by pol-channel |
---|
| 914 | // plane so all that will change is beam and IF and that's what we want. |
---|
| 915 | |
---|
| 916 | IPosition pos = itDataPlane.pos(); |
---|
| 917 | |
---|
| 918 | // Write out data. This is a bit messy. We have to reform the Vector |
---|
| 919 | // accumulator into an Array of shape (1,1,1,nChan) |
---|
| 920 | |
---|
| 921 | start = pos; |
---|
| 922 | end = pos; |
---|
[262] | 923 | end(asap::ChanAxis) = nChan-1; |
---|
[165] | 924 | outData(start,end) = vecSum.getArray().reform(vecShapeOut); |
---|
| 925 | outMask(start,end) = vecSum.getMask().reform(vecShapeOut); |
---|
| 926 | |
---|
| 927 | // Step to next beam/IF combination |
---|
| 928 | |
---|
| 929 | itDataPlane.next(); |
---|
| 930 | itMaskPlane.next(); |
---|
| 931 | } |
---|
| 932 | |
---|
| 933 | // Generate output container and write it to output table |
---|
| 934 | |
---|
| 935 | SDContainer sc = in.getSDContainer(); |
---|
| 936 | sc.resize(shapeOut); |
---|
| 937 | // |
---|
[185] | 938 | putDataInSDC(sc, outData, outMask); |
---|
[165] | 939 | pTabOut->putSDContainer(sc); |
---|
| 940 | } |
---|
[304] | 941 | |
---|
| 942 | // Set polarization cursor to 0 |
---|
| 943 | |
---|
| 944 | pTabOut->setPol(0); |
---|
[165] | 945 | // |
---|
| 946 | return pTabOut; |
---|
| 947 | } |
---|
[167] | 948 | |
---|
[169] | 949 | |
---|
[185] | 950 | SDMemTable* SDMath::smooth(const SDMemTable& in, |
---|
| 951 | const casa::String& kernelType, |
---|
[234] | 952 | casa::Float width, Bool doAll) const |
---|
[299] | 953 | // |
---|
| 954 | // Should smooth TSys as well |
---|
| 955 | // |
---|
[177] | 956 | { |
---|
[169] | 957 | |
---|
[177] | 958 | // Number of channels |
---|
[169] | 959 | |
---|
[177] | 960 | SDHeader sh = in.getSDHeader(); |
---|
| 961 | const uInt nChan = sh.nchan; |
---|
| 962 | |
---|
| 963 | // Generate Kernel |
---|
| 964 | |
---|
[185] | 965 | VectorKernel::KernelTypes type = VectorKernel::toKernelType(kernelType); |
---|
[177] | 966 | Vector<Float> kernel = VectorKernel::make(type, width, nChan, True, False); |
---|
| 967 | |
---|
| 968 | // Generate Convolver |
---|
| 969 | |
---|
| 970 | IPosition shape(1,nChan); |
---|
| 971 | Convolver<Float> conv(kernel, shape); |
---|
| 972 | |
---|
| 973 | // New Table |
---|
| 974 | |
---|
| 975 | SDMemTable* pTabOut = new SDMemTable(in,True); |
---|
| 976 | |
---|
| 977 | // Get cursor location |
---|
| 978 | |
---|
| 979 | IPosition start, end; |
---|
[185] | 980 | getCursorLocation(start, end, in); |
---|
[177] | 981 | // |
---|
| 982 | IPosition shapeOut(4,1); |
---|
| 983 | |
---|
| 984 | // Output Vectors |
---|
| 985 | |
---|
| 986 | Vector<Float> valuesOut(nChan); |
---|
| 987 | Vector<Bool> maskOut(nChan); |
---|
| 988 | |
---|
| 989 | // Loop over rows in Table |
---|
| 990 | |
---|
| 991 | for (uInt ri=0; ri < in.nRow(); ++ri) { |
---|
| 992 | |
---|
| 993 | // Get copy of data |
---|
| 994 | |
---|
| 995 | const MaskedArray<Float>& dataIn(in.rowAsMaskedArray(ri)); |
---|
[262] | 996 | AlwaysAssert(dataIn.shape()(asap::ChanAxis)==nChan, AipsError); |
---|
[177] | 997 | // |
---|
| 998 | Array<Float> valuesIn = dataIn.getArray(); |
---|
| 999 | Array<Bool> maskIn = dataIn.getMask(); |
---|
| 1000 | |
---|
| 1001 | // Branch depending on whether we smooth all locations or just |
---|
| 1002 | // those pointed at by the current selection cursor |
---|
| 1003 | |
---|
| 1004 | if (doAll) { |
---|
[299] | 1005 | VectorIterator<Float> itValues(valuesIn, asap::ChanAxis); |
---|
| 1006 | VectorIterator<Bool> itMask(maskIn, asap::ChanAxis); |
---|
[177] | 1007 | while (!itValues.pastEnd()) { |
---|
| 1008 | |
---|
| 1009 | // Smooth |
---|
| 1010 | if (kernelType==VectorKernel::HANNING) { |
---|
| 1011 | mathutil::hanning(valuesOut, maskOut, itValues.vector(), itMask.vector()); |
---|
| 1012 | itMask.vector() = maskOut; |
---|
| 1013 | } else { |
---|
| 1014 | mathutil::replaceMaskByZero(itValues.vector(), itMask.vector()); |
---|
| 1015 | conv.linearConv(valuesOut, itValues.vector()); |
---|
| 1016 | } |
---|
| 1017 | // |
---|
| 1018 | itValues.vector() = valuesOut; |
---|
| 1019 | // |
---|
| 1020 | itValues.next(); |
---|
| 1021 | itMask.next(); |
---|
| 1022 | } |
---|
| 1023 | } else { |
---|
| 1024 | |
---|
| 1025 | // Set multi-dim Vector shape |
---|
| 1026 | |
---|
[299] | 1027 | shapeOut(asap::ChanAxis) = valuesIn.shape()(asap::ChanAxis); |
---|
[177] | 1028 | |
---|
| 1029 | // Stuff about with shapes so that we don't have conformance run-time errors |
---|
| 1030 | |
---|
| 1031 | Vector<Float> valuesIn2 = valuesIn(start,end).nonDegenerate(); |
---|
| 1032 | Vector<Bool> maskIn2 = maskIn(start,end).nonDegenerate(); |
---|
| 1033 | |
---|
| 1034 | // Smooth |
---|
| 1035 | |
---|
| 1036 | if (kernelType==VectorKernel::HANNING) { |
---|
| 1037 | mathutil::hanning(valuesOut, maskOut, valuesIn2, maskIn2); |
---|
| 1038 | maskIn(start,end) = maskOut.reform(shapeOut); |
---|
| 1039 | } else { |
---|
| 1040 | mathutil::replaceMaskByZero(valuesIn2, maskIn2); |
---|
| 1041 | conv.linearConv(valuesOut, valuesIn2); |
---|
| 1042 | } |
---|
| 1043 | // |
---|
| 1044 | valuesIn(start,end) = valuesOut.reform(shapeOut); |
---|
| 1045 | } |
---|
| 1046 | |
---|
| 1047 | // Create and put back |
---|
| 1048 | |
---|
| 1049 | SDContainer sc = in.getSDContainer(ri); |
---|
[185] | 1050 | putDataInSDC(sc, valuesIn, maskIn); |
---|
[177] | 1051 | // |
---|
| 1052 | pTabOut->putSDContainer(sc); |
---|
| 1053 | } |
---|
| 1054 | // |
---|
| 1055 | return pTabOut; |
---|
| 1056 | } |
---|
| 1057 | |
---|
| 1058 | |
---|
[262] | 1059 | |
---|
[234] | 1060 | SDMemTable* SDMath::convertFlux (const SDMemTable& in, Float a, Float eta, Bool doAll) const |
---|
[221] | 1061 | // |
---|
| 1062 | // As it is, this function could be implemented with 'simpleOperate' |
---|
| 1063 | // However, I anticipate that eventually we will look the conversion |
---|
| 1064 | // values up in a Table and apply them in a frequency dependent way, |
---|
| 1065 | // so I have implemented it fully here |
---|
| 1066 | // |
---|
| 1067 | { |
---|
| 1068 | SDHeader sh = in.getSDHeader(); |
---|
| 1069 | SDMemTable* pTabOut = new SDMemTable(in, True); |
---|
[177] | 1070 | |
---|
[221] | 1071 | // FInd out how to convert values into Jy and K (e.g. units might be mJy or mK) |
---|
| 1072 | // Also automatically find out what we are converting to according to the |
---|
| 1073 | // flux unit |
---|
[177] | 1074 | |
---|
[221] | 1075 | Unit fluxUnit(sh.fluxunit); |
---|
| 1076 | Unit K(String("K")); |
---|
| 1077 | Unit JY(String("Jy")); |
---|
| 1078 | // |
---|
| 1079 | Bool toKelvin = True; |
---|
| 1080 | Double inFac = 1.0; |
---|
| 1081 | if (fluxUnit==JY) { |
---|
| 1082 | cerr << "Converting to K" << endl; |
---|
| 1083 | // |
---|
| 1084 | Quantum<Double> t(1.0,fluxUnit); |
---|
| 1085 | Quantum<Double> t2 = t.get(JY); |
---|
| 1086 | inFac = (t2 / t).getValue(); |
---|
| 1087 | // |
---|
| 1088 | toKelvin = True; |
---|
| 1089 | sh.fluxunit = "K"; |
---|
| 1090 | } else if (fluxUnit==K) { |
---|
| 1091 | cerr << "Converting to Jy" << endl; |
---|
| 1092 | // |
---|
| 1093 | Quantum<Double> t(1.0,fluxUnit); |
---|
| 1094 | Quantum<Double> t2 = t.get(K); |
---|
| 1095 | inFac = (t2 / t).getValue(); |
---|
| 1096 | // |
---|
| 1097 | toKelvin = False; |
---|
| 1098 | sh.fluxunit = "Jy"; |
---|
| 1099 | } else { |
---|
[248] | 1100 | throw(AipsError("Unrecognized brightness units in Table - must be consistent with Jy or K")); |
---|
[221] | 1101 | } |
---|
| 1102 | pTabOut->putSDHeader(sh); |
---|
[177] | 1103 | |
---|
[221] | 1104 | // Compute conversion factor. 'a' and 'eta' are really frequency, time and |
---|
| 1105 | // telescope dependent and should be looked// up in a table |
---|
| 1106 | |
---|
[234] | 1107 | Float factor = 2.0 * inFac * 1.0e-7 * 1.0e26 * |
---|
| 1108 | QC::k.getValue(Unit(String("erg/K"))) / a / eta; |
---|
[221] | 1109 | if (toKelvin) { |
---|
| 1110 | factor = 1.0 / factor; |
---|
| 1111 | } |
---|
| 1112 | cerr << "Applying conversion factor = " << factor << endl; |
---|
| 1113 | |
---|
[270] | 1114 | // Generate correction vector. Apply same factor regardless |
---|
| 1115 | // of beam/pol/IF. This will need to change somewhen. |
---|
[221] | 1116 | |
---|
[270] | 1117 | Vector<Float> factors(in.nRow(), factor); |
---|
[221] | 1118 | |
---|
[270] | 1119 | // Correct |
---|
[221] | 1120 | |
---|
[270] | 1121 | correctFromVector (pTabOut, in, doAll, factors); |
---|
[221] | 1122 | // |
---|
| 1123 | return pTabOut; |
---|
| 1124 | } |
---|
| 1125 | |
---|
| 1126 | |
---|
[234] | 1127 | SDMemTable* SDMath::gainElevation (const SDMemTable& in, const Vector<Float>& coeffs, |
---|
| 1128 | const String& fileName, |
---|
| 1129 | const String& methodStr, Bool doAll) const |
---|
[227] | 1130 | { |
---|
[234] | 1131 | |
---|
| 1132 | // Get header and clone output table |
---|
| 1133 | |
---|
[227] | 1134 | SDHeader sh = in.getSDHeader(); |
---|
| 1135 | SDMemTable* pTabOut = new SDMemTable(in, True); |
---|
| 1136 | |
---|
[234] | 1137 | // Get elevation data from SDMemTable and convert to degrees |
---|
[227] | 1138 | |
---|
| 1139 | const Table& tab = in.table(); |
---|
| 1140 | ROScalarColumn<Float> elev(tab, "ELEVATION"); |
---|
[234] | 1141 | Vector<Float> x = elev.getColumn(); |
---|
| 1142 | x *= Float(180 / C::pi); |
---|
[227] | 1143 | // |
---|
[234] | 1144 | const uInt nC = coeffs.nelements(); |
---|
| 1145 | if (fileName.length()>0 && nC>0) { |
---|
[248] | 1146 | throw(AipsError("You must choose either polynomial coefficients or an ascii file, not both")); |
---|
[234] | 1147 | } |
---|
| 1148 | |
---|
| 1149 | // Correct |
---|
| 1150 | |
---|
| 1151 | if (nC>0 || fileName.length()==0) { |
---|
| 1152 | |
---|
| 1153 | // Find instrument |
---|
| 1154 | |
---|
| 1155 | Bool throwIt = True; |
---|
| 1156 | Instrument inst = SDMemTable::convertInstrument (sh.antennaname, throwIt); |
---|
| 1157 | |
---|
| 1158 | // Set polynomial |
---|
| 1159 | |
---|
| 1160 | Polynomial<Float>* pPoly = 0; |
---|
| 1161 | Vector<Float> coeff; |
---|
| 1162 | String msg; |
---|
| 1163 | if (nC>0) { |
---|
| 1164 | pPoly = new Polynomial<Float>(nC); |
---|
| 1165 | coeff = coeffs; |
---|
| 1166 | msg = String("user"); |
---|
| 1167 | } else { |
---|
[292] | 1168 | if (inst==ATPKSMB) { |
---|
| 1169 | } else if (inst==ATPKSHOH) { |
---|
[234] | 1170 | } else if (inst==TIDBINBILLA) { |
---|
| 1171 | pPoly = new Polynomial<Float>(3); |
---|
| 1172 | coeff.resize(3); |
---|
| 1173 | coeff(0) = 3.58788e-1; |
---|
| 1174 | coeff(1) = 2.87243e-2; |
---|
| 1175 | coeff(2) = -3.219093e-4; |
---|
[292] | 1176 | } else if (inst==ATMOPRA) { |
---|
| 1177 | } else { |
---|
[234] | 1178 | } |
---|
| 1179 | msg = String("built in"); |
---|
| 1180 | } |
---|
[227] | 1181 | // |
---|
[234] | 1182 | if (coeff.nelements()>0) { |
---|
| 1183 | pPoly->setCoefficients(coeff); |
---|
| 1184 | } else { |
---|
[248] | 1185 | throw(AipsError("There is no known gain-el polynomial known for this instrument")); |
---|
[234] | 1186 | } |
---|
| 1187 | // |
---|
| 1188 | cerr << "Making polynomial correction with " << msg << " coefficients" << endl; |
---|
| 1189 | const uInt nRow = in.nRow(); |
---|
| 1190 | Vector<Float> factor(nRow); |
---|
| 1191 | for (uInt i=0; i<nRow; i++) { |
---|
| 1192 | factor[i] = (*pPoly)(x[i]); |
---|
| 1193 | } |
---|
| 1194 | delete pPoly; |
---|
| 1195 | // |
---|
| 1196 | correctFromVector (pTabOut, in, doAll, factor); |
---|
| 1197 | } else { |
---|
| 1198 | |
---|
| 1199 | // Indicate which columns to read from ascii file |
---|
| 1200 | |
---|
| 1201 | String col0("ELEVATION"); |
---|
| 1202 | String col1("FACTOR"); |
---|
| 1203 | |
---|
| 1204 | // Read and correct |
---|
| 1205 | |
---|
| 1206 | cerr << "Making correction from ascii Table" << endl; |
---|
| 1207 | correctFromAsciiTable (pTabOut, in, fileName, col0, col1, |
---|
| 1208 | methodStr, doAll, x); |
---|
| 1209 | } |
---|
| 1210 | // |
---|
| 1211 | return pTabOut; |
---|
[230] | 1212 | } |
---|
[227] | 1213 | |
---|
[230] | 1214 | |
---|
[227] | 1215 | |
---|
[234] | 1216 | SDMemTable* SDMath::opacity (const SDMemTable& in, Float tau, Bool doAll) const |
---|
| 1217 | { |
---|
[227] | 1218 | |
---|
[234] | 1219 | // Get header and clone output table |
---|
[227] | 1220 | |
---|
[234] | 1221 | SDHeader sh = in.getSDHeader(); |
---|
| 1222 | SDMemTable* pTabOut = new SDMemTable(in, True); |
---|
| 1223 | |
---|
| 1224 | // Get elevation data from SDMemTable and convert to degrees |
---|
| 1225 | |
---|
| 1226 | const Table& tab = in.table(); |
---|
| 1227 | ROScalarColumn<Float> elev(tab, "ELEVATION"); |
---|
| 1228 | Vector<Float> zDist = elev.getColumn(); |
---|
| 1229 | zDist = Float(C::pi_2) - zDist; |
---|
| 1230 | |
---|
| 1231 | // Generate correction factor |
---|
| 1232 | |
---|
| 1233 | const uInt nRow = in.nRow(); |
---|
| 1234 | Vector<Float> factor(nRow); |
---|
| 1235 | Vector<Float> factor2(nRow); |
---|
| 1236 | for (uInt i=0; i<nRow; i++) { |
---|
| 1237 | factor[i] = exp(tau)/cos(zDist[i]); |
---|
| 1238 | } |
---|
| 1239 | |
---|
| 1240 | // Correct |
---|
| 1241 | |
---|
| 1242 | correctFromVector (pTabOut, in, doAll, factor); |
---|
| 1243 | // |
---|
| 1244 | return pTabOut; |
---|
| 1245 | } |
---|
| 1246 | |
---|
| 1247 | |
---|
| 1248 | |
---|
| 1249 | |
---|
[169] | 1250 | // 'private' functions |
---|
| 1251 | |
---|
[309] | 1252 | |
---|
| 1253 | SDMemTable* SDMath::frequencyAlign (const SDMemTable& in, |
---|
| 1254 | MFrequency::Types freqSystem, |
---|
[272] | 1255 | const String& refTime) const |
---|
[267] | 1256 | { |
---|
| 1257 | // Get Header |
---|
| 1258 | |
---|
| 1259 | SDHeader sh = in.getSDHeader(); |
---|
| 1260 | const uInt nChan = sh.nchan; |
---|
| 1261 | const uInt nRows = in.nRow(); |
---|
| 1262 | |
---|
| 1263 | // Get Table reference |
---|
| 1264 | |
---|
| 1265 | const Table& tabIn = in.table(); |
---|
| 1266 | |
---|
| 1267 | // Get Columns from Table |
---|
| 1268 | |
---|
[294] | 1269 | ROScalarColumn<Double> mjdCol(tabIn, "TIME"); |
---|
| 1270 | ROScalarColumn<String> srcCol(tabIn, "SRCNAME"); |
---|
| 1271 | ROArrayColumn<uInt> fqIDCol(tabIn, "FREQID"); |
---|
[267] | 1272 | // |
---|
[294] | 1273 | Vector<Double> times = mjdCol.getColumn(); |
---|
| 1274 | Vector<String> srcNames = srcCol.getColumn(); |
---|
| 1275 | Vector<uInt> freqID; |
---|
[267] | 1276 | |
---|
| 1277 | // Generate Source table |
---|
| 1278 | |
---|
| 1279 | Vector<String> srcTab; |
---|
| 1280 | Vector<uInt> srcIdx, firstRow; |
---|
| 1281 | generateSourceTable (srcTab, srcIdx, firstRow, srcNames); |
---|
| 1282 | const uInt nSrcTab = srcTab.nelements(); |
---|
| 1283 | cerr << "Found " << srcTab.nelements() << " sources to align " << endl; |
---|
| 1284 | |
---|
[294] | 1285 | // Get reference Epoch to time of first row or given String |
---|
[267] | 1286 | |
---|
| 1287 | Unit DAY(String("d")); |
---|
[272] | 1288 | MEpoch::Ref epochRef(in.getTimeReference()); |
---|
| 1289 | MEpoch refEpoch; |
---|
| 1290 | if (refTime.length()>0) { |
---|
| 1291 | refEpoch = epochFromString(refTime, in.getTimeReference()); |
---|
| 1292 | } else { |
---|
[288] | 1293 | refEpoch = in.getEpoch(0); |
---|
[272] | 1294 | } |
---|
[309] | 1295 | cerr << "Aligning at reference Epoch " << formatEpoch(refEpoch) << |
---|
| 1296 | " in frame " << MFrequency::showType(freqSystem) << endl; |
---|
[267] | 1297 | |
---|
[294] | 1298 | // Get Reference Position |
---|
[267] | 1299 | |
---|
[288] | 1300 | MPosition refPos = in.getAntennaPosition(); |
---|
[267] | 1301 | |
---|
| 1302 | // Get Frequency Table |
---|
| 1303 | |
---|
| 1304 | SDFrequencyTable fTab = in.getSDFreqTable(); |
---|
| 1305 | const uInt nFreqIDs = fTab.length(); |
---|
| 1306 | |
---|
[309] | 1307 | // Create FrequencyAligner Block. One VA for each possible |
---|
[267] | 1308 | // source/freqID combination |
---|
| 1309 | |
---|
[309] | 1310 | PtrBlock<FrequencyAligner<Float>* > a(nFreqIDs*nSrcTab); |
---|
| 1311 | generateFrequencyAligners (a, in, nChan, nFreqIDs, nSrcTab, firstRow, |
---|
| 1312 | freqSystem, refPos, refEpoch); |
---|
[267] | 1313 | |
---|
| 1314 | // New output Table |
---|
| 1315 | |
---|
| 1316 | SDMemTable* pTabOut = new SDMemTable(in,True); |
---|
| 1317 | |
---|
| 1318 | // Loop over rows in Table |
---|
| 1319 | |
---|
[294] | 1320 | const IPosition polChanAxes(2, asap::PolAxis, asap::ChanAxis); |
---|
[309] | 1321 | FrequencyAligner<Float>::Method method = FrequencyAligner<Float>::LINEAR; |
---|
[294] | 1322 | Bool extrapolate=False; |
---|
| 1323 | Bool useCachedAbcissa = False; |
---|
| 1324 | Bool first = True; |
---|
| 1325 | Bool ok; |
---|
| 1326 | Vector<Float> yOut; |
---|
| 1327 | Vector<Bool> maskOut; |
---|
[309] | 1328 | uInt ifIdx, faIdx; |
---|
[267] | 1329 | // |
---|
[294] | 1330 | for (uInt iRow=0; iRow<nRows; ++iRow) { |
---|
| 1331 | if (iRow%10==0) { |
---|
| 1332 | cerr << "Processing row " << iRow << endl; |
---|
| 1333 | } |
---|
[267] | 1334 | |
---|
| 1335 | // Get EPoch |
---|
| 1336 | |
---|
[294] | 1337 | Quantum<Double> tQ2(times[iRow],DAY); |
---|
| 1338 | MVEpoch mv2(tQ2); |
---|
| 1339 | MEpoch epoch(mv2, epochRef); |
---|
[267] | 1340 | |
---|
| 1341 | // Get FreqID vector. One freqID per IF |
---|
| 1342 | |
---|
[294] | 1343 | fqIDCol.get(iRow, freqID); |
---|
[267] | 1344 | |
---|
| 1345 | // Get copy of data |
---|
| 1346 | |
---|
[294] | 1347 | const MaskedArray<Float>& mArrIn(in.rowAsMaskedArray(iRow)); |
---|
| 1348 | Array<Float> values = mArrIn.getArray(); |
---|
| 1349 | Array<Bool> mask = mArrIn.getMask(); |
---|
[267] | 1350 | |
---|
| 1351 | // cerr << "values in = " << values(IPosition(4,0,0,0,0),IPosition(4,0,0,0,9)) << endl; |
---|
| 1352 | |
---|
[309] | 1353 | // For each row, the Frequency abcissa will be the same regardless |
---|
[267] | 1354 | // of polarization. For all other axes (IF and BEAM) the abcissa |
---|
| 1355 | // will change. So we iterate through the data by pol-chan planes |
---|
| 1356 | // to mimimize the work. At this point, I think the Direction |
---|
| 1357 | // is stored as the same for each beam. DOn't know where the |
---|
| 1358 | // offsets are or what to do about them right now. For now |
---|
| 1359 | // all beams get same position and velocoity abcissa. |
---|
| 1360 | |
---|
[294] | 1361 | ArrayIterator<Float> itValuesPlane(values, polChanAxes); |
---|
| 1362 | ArrayIterator<Bool> itMaskPlane(mask, polChanAxes); |
---|
| 1363 | while (!itValuesPlane.pastEnd()) { |
---|
[267] | 1364 | |
---|
[309] | 1365 | // Find the IF index and then the FA PtrBlock index |
---|
[267] | 1366 | |
---|
[294] | 1367 | const IPosition& pos = itValuesPlane.pos(); |
---|
| 1368 | ifIdx = pos(asap::IFAxis); |
---|
[309] | 1369 | faIdx = (srcIdx[iRow]*nFreqIDs) + freqID[ifIdx]; |
---|
[267] | 1370 | // |
---|
[294] | 1371 | VectorIterator<Float> itValuesVec(itValuesPlane.array(), 1); |
---|
| 1372 | VectorIterator<Bool> itMaskVec(itMaskPlane.array(), 1); |
---|
[267] | 1373 | // |
---|
[294] | 1374 | first = True; |
---|
| 1375 | useCachedAbcissa=False; |
---|
| 1376 | while (!itValuesVec.pastEnd()) { |
---|
[309] | 1377 | ok = a[faIdx]->align (yOut, maskOut, itValuesVec.vector(), |
---|
[294] | 1378 | itMaskVec.vector(), epoch, useCachedAbcissa, |
---|
| 1379 | method, extrapolate); |
---|
| 1380 | itValuesVec.vector() = yOut; |
---|
| 1381 | itMaskVec.vector() = maskOut; |
---|
[267] | 1382 | // |
---|
[294] | 1383 | itValuesVec.next(); |
---|
| 1384 | itMaskVec.next(); |
---|
[267] | 1385 | // |
---|
[294] | 1386 | if (first) { |
---|
| 1387 | useCachedAbcissa = True; |
---|
| 1388 | first = False; |
---|
| 1389 | } |
---|
| 1390 | } |
---|
[267] | 1391 | // |
---|
| 1392 | itValuesPlane.next(); |
---|
| 1393 | itMaskPlane.next(); |
---|
[294] | 1394 | } |
---|
[267] | 1395 | |
---|
| 1396 | // cerr << "values out = " << values(IPosition(4,0,0,0,0),IPosition(4,0,0,0,9)) << endl; |
---|
| 1397 | |
---|
| 1398 | // Create and put back |
---|
| 1399 | |
---|
| 1400 | SDContainer sc = in.getSDContainer(iRow); |
---|
| 1401 | putDataInSDC(sc, values, mask); |
---|
| 1402 | // |
---|
| 1403 | pTabOut->putSDContainer(sc); |
---|
[294] | 1404 | } |
---|
[267] | 1405 | |
---|
[309] | 1406 | |
---|
| 1407 | // Write out correct frequency table information for output. |
---|
| 1408 | // CLone from input and overwrite |
---|
| 1409 | |
---|
| 1410 | SDFrequencyTable freqTab = in.getSDFreqTable(); |
---|
| 1411 | freqTab.setLength(0); |
---|
| 1412 | |
---|
| 1413 | // Note that we don't have anyway to hold frequency table information |
---|
| 1414 | // in the SDMemTable which is source dependent. Each FrequencyAligner |
---|
| 1415 | // is generated for an freqID/Source combination. Don't know what to |
---|
| 1416 | // do about this apart from to pick the aligned SC from the first source |
---|
| 1417 | // at the moment. ASAP really needs to handle data description id |
---|
| 1418 | // like in aips++ which is a combination of source and freqid. Otherwise |
---|
| 1419 | // all else I can do in this function is disallow multiple sources |
---|
| 1420 | |
---|
| 1421 | Bool linear=True; |
---|
| 1422 | Vector<String> units(1); |
---|
| 1423 | units = String("Hz"); |
---|
| 1424 | for (uInt fqID=0; fqID<nFreqIDs; fqID++) { |
---|
| 1425 | for (uInt iSrc=0; iSrc<nSrcTab; iSrc++) { |
---|
| 1426 | uInt idx = (iSrc*nFreqIDs) + fqID; |
---|
| 1427 | |
---|
| 1428 | // Get Aligned SC in Hz |
---|
| 1429 | |
---|
| 1430 | if (iSrc==0) { |
---|
| 1431 | SpectralCoordinate sC = a[idx]->alignedSpectralCoordinate(linear); |
---|
| 1432 | sC.setWorldAxisUnits(units); |
---|
| 1433 | |
---|
| 1434 | // Write out frequency table information to SDMemTable |
---|
| 1435 | |
---|
| 1436 | Int idx = freqTab.addFrequency(sC.referencePixel()[0], |
---|
| 1437 | sC.referenceValue()[0], |
---|
| 1438 | sC.increment()[0]); |
---|
| 1439 | } |
---|
| 1440 | } |
---|
| 1441 | } |
---|
| 1442 | pTabOut->putSDFreqTable(freqTab); |
---|
| 1443 | |
---|
| 1444 | // Now we must set the base and extra frames to the |
---|
| 1445 | // input frame |
---|
| 1446 | |
---|
| 1447 | std::vector<string> info = pTabOut->getCoordInfo(); |
---|
| 1448 | info[1] = MFrequency::showType(freqSystem); // Conversion frame |
---|
| 1449 | info[3] = info[1]; // Base frame |
---|
| 1450 | pTabOut->setCoordInfo(info); |
---|
| 1451 | |
---|
[267] | 1452 | // Clean up PointerBlock |
---|
| 1453 | |
---|
[309] | 1454 | for (uInt i=0; i<a.nelements(); i++) delete a[i]; |
---|
[267] | 1455 | // |
---|
[309] | 1456 | return pTabOut; |
---|
[267] | 1457 | } |
---|
| 1458 | |
---|
| 1459 | |
---|
[185] | 1460 | void SDMath::fillSDC(SDContainer& sc, |
---|
| 1461 | const Array<Bool>& mask, |
---|
| 1462 | const Array<Float>& data, |
---|
| 1463 | const Array<Float>& tSys, |
---|
| 1464 | Int scanID, Double timeStamp, |
---|
| 1465 | Double interval, const String& sourceName, |
---|
[227] | 1466 | const Vector<uInt>& freqID) const |
---|
[167] | 1467 | { |
---|
[169] | 1468 | // Data and mask |
---|
[167] | 1469 | |
---|
[185] | 1470 | putDataInSDC(sc, data, mask); |
---|
[167] | 1471 | |
---|
[169] | 1472 | // TSys |
---|
| 1473 | |
---|
| 1474 | sc.putTsys(tSys); |
---|
| 1475 | |
---|
| 1476 | // Time things |
---|
| 1477 | |
---|
| 1478 | sc.timestamp = timeStamp; |
---|
| 1479 | sc.interval = interval; |
---|
| 1480 | sc.scanid = scanID; |
---|
[167] | 1481 | // |
---|
[169] | 1482 | sc.sourcename = sourceName; |
---|
| 1483 | sc.putFreqMap(freqID); |
---|
| 1484 | } |
---|
[167] | 1485 | |
---|
[185] | 1486 | void SDMath::normalize(MaskedArray<Float>& sum, |
---|
[169] | 1487 | const Array<Float>& sumSq, |
---|
| 1488 | const Array<Float>& nPts, |
---|
| 1489 | WeightType wtType, Int axis, |
---|
[227] | 1490 | Int nAxesSub) const |
---|
[169] | 1491 | { |
---|
| 1492 | IPosition pos2(nAxesSub,0); |
---|
| 1493 | // |
---|
| 1494 | if (wtType==NONE) { |
---|
[167] | 1495 | |
---|
[169] | 1496 | // We just average by the number of points accumulated. |
---|
| 1497 | // We need to make a MA out of nPts so that no divide by |
---|
| 1498 | // zeros occur |
---|
[167] | 1499 | |
---|
[169] | 1500 | MaskedArray<Float> t(nPts, (nPts>Float(0.0))); |
---|
| 1501 | sum /= t; |
---|
| 1502 | } else if (wtType==VAR) { |
---|
[167] | 1503 | |
---|
[169] | 1504 | // Normalize each spectrum by sum(1/var) where the variance |
---|
| 1505 | // is worked out for each spectrum |
---|
| 1506 | |
---|
| 1507 | Array<Float>& data = sum.getRWArray(); |
---|
| 1508 | VectorIterator<Float> itData(data, axis); |
---|
| 1509 | while (!itData.pastEnd()) { |
---|
| 1510 | pos2 = itData.pos().getFirst(nAxesSub); |
---|
| 1511 | itData.vector() /= sumSq(pos2); |
---|
| 1512 | itData.next(); |
---|
| 1513 | } |
---|
| 1514 | } else if (wtType==TSYS) { |
---|
| 1515 | } |
---|
| 1516 | } |
---|
| 1517 | |
---|
| 1518 | |
---|
[185] | 1519 | void SDMath::accumulate(Double& timeSum, Double& intSum, Int& nAccum, |
---|
| 1520 | MaskedArray<Float>& sum, Array<Float>& sumSq, |
---|
| 1521 | Array<Float>& nPts, Array<Float>& tSysSum, |
---|
| 1522 | const Array<Float>& tSys, const Array<Float>& nInc, |
---|
| 1523 | const Vector<Bool>& mask, Double time, Double interval, |
---|
| 1524 | const Block<CountedPtr<SDMemTable> >& in, |
---|
| 1525 | uInt iTab, uInt iRow, uInt axis, |
---|
| 1526 | uInt nAxesSub, Bool useMask, |
---|
[227] | 1527 | WeightType wtType) const |
---|
[169] | 1528 | { |
---|
| 1529 | |
---|
| 1530 | // Get data |
---|
| 1531 | |
---|
| 1532 | MaskedArray<Float> dataIn(in[iTab]->rowAsMaskedArray(iRow)); |
---|
| 1533 | Array<Float>& valuesIn = dataIn.getRWArray(); // writable reference |
---|
| 1534 | const Array<Bool>& maskIn = dataIn.getMask(); // RO reference |
---|
[167] | 1535 | // |
---|
[169] | 1536 | if (wtType==NONE) { |
---|
| 1537 | const MaskedArray<Float> n(nInc,dataIn.getMask()); |
---|
| 1538 | nPts += n; // Only accumulates where mask==T |
---|
| 1539 | } else if (wtType==VAR) { |
---|
[167] | 1540 | |
---|
[169] | 1541 | // We are going to average the data, weighted by the noise for each pol, beam and IF. |
---|
| 1542 | // So therefore we need to iterate through by spectrum (axis 3) |
---|
[167] | 1543 | |
---|
[169] | 1544 | VectorIterator<Float> itData(valuesIn, axis); |
---|
| 1545 | ReadOnlyVectorIterator<Bool> itMask(maskIn, axis); |
---|
| 1546 | Float fac = 1.0; |
---|
| 1547 | IPosition pos(nAxesSub,0); |
---|
| 1548 | // |
---|
| 1549 | while (!itData.pastEnd()) { |
---|
[167] | 1550 | |
---|
[169] | 1551 | // Make MaskedArray of Vector, optionally apply OTF mask, and find scaling factor |
---|
[167] | 1552 | |
---|
[169] | 1553 | if (useMask) { |
---|
| 1554 | MaskedArray<Float> tmp(itData.vector(),mask&&itMask.vector()); |
---|
| 1555 | fac = 1.0/variance(tmp); |
---|
| 1556 | } else { |
---|
| 1557 | MaskedArray<Float> tmp(itData.vector(),itMask.vector()); |
---|
| 1558 | fac = 1.0/variance(tmp); |
---|
| 1559 | } |
---|
| 1560 | |
---|
| 1561 | // Scale data |
---|
| 1562 | |
---|
| 1563 | itData.vector() *= fac; // Writes back into 'dataIn' |
---|
[167] | 1564 | // |
---|
[169] | 1565 | // Accumulate variance per if/pol/beam averaged over spectrum |
---|
| 1566 | // This method to get pos2 from itData.pos() is only valid |
---|
| 1567 | // because the spectral axis is the last one (so we can just |
---|
| 1568 | // copy the first nAXesSub positions out) |
---|
[167] | 1569 | |
---|
[169] | 1570 | pos = itData.pos().getFirst(nAxesSub); |
---|
| 1571 | sumSq(pos) += fac; |
---|
| 1572 | // |
---|
| 1573 | itData.next(); |
---|
| 1574 | itMask.next(); |
---|
| 1575 | } |
---|
| 1576 | } else if (wtType==TSYS) { |
---|
| 1577 | } |
---|
[167] | 1578 | |
---|
[169] | 1579 | // Accumulate sum of (possibly scaled) data |
---|
| 1580 | |
---|
| 1581 | sum += dataIn; |
---|
| 1582 | |
---|
| 1583 | // Accumulate Tsys, time, and interval |
---|
| 1584 | |
---|
| 1585 | tSysSum += tSys; |
---|
| 1586 | timeSum += time; |
---|
| 1587 | intSum += interval; |
---|
| 1588 | nAccum += 1; |
---|
| 1589 | } |
---|
| 1590 | |
---|
| 1591 | |
---|
| 1592 | |
---|
| 1593 | |
---|
[185] | 1594 | void SDMath::getCursorLocation(IPosition& start, IPosition& end, |
---|
[227] | 1595 | const SDMemTable& in) const |
---|
[169] | 1596 | { |
---|
| 1597 | const uInt nDim = 4; |
---|
| 1598 | const uInt i = in.getBeam(); |
---|
| 1599 | const uInt j = in.getIF(); |
---|
| 1600 | const uInt k = in.getPol(); |
---|
| 1601 | const uInt n = in.nChan(); |
---|
[167] | 1602 | // |
---|
[169] | 1603 | start.resize(nDim); |
---|
| 1604 | start(0) = i; |
---|
| 1605 | start(1) = j; |
---|
| 1606 | start(2) = k; |
---|
| 1607 | start(3) = 0; |
---|
[167] | 1608 | // |
---|
[169] | 1609 | end.resize(nDim); |
---|
| 1610 | end(0) = i; |
---|
| 1611 | end(1) = j; |
---|
| 1612 | end(2) = k; |
---|
| 1613 | end(3) = n-1; |
---|
| 1614 | } |
---|
| 1615 | |
---|
| 1616 | |
---|
[227] | 1617 | void SDMath::convertWeightString(WeightType& wtType, const String& weightStr) const |
---|
[169] | 1618 | { |
---|
| 1619 | String tStr(weightStr); |
---|
| 1620 | tStr.upcase(); |
---|
| 1621 | if (tStr.contains(String("NONE"))) { |
---|
| 1622 | wtType = NONE; |
---|
| 1623 | } else if (tStr.contains(String("VAR"))) { |
---|
| 1624 | wtType = VAR; |
---|
| 1625 | } else if (tStr.contains(String("TSYS"))) { |
---|
| 1626 | wtType = TSYS; |
---|
[185] | 1627 | throw(AipsError("T_sys weighting not yet implemented")); |
---|
[169] | 1628 | } else { |
---|
[185] | 1629 | throw(AipsError("Unrecognized weighting type")); |
---|
[167] | 1630 | } |
---|
| 1631 | } |
---|
| 1632 | |
---|
[227] | 1633 | void SDMath::convertInterpString(Int& type, const String& interp) const |
---|
| 1634 | { |
---|
| 1635 | String tStr(interp); |
---|
| 1636 | tStr.upcase(); |
---|
| 1637 | if (tStr.contains(String("NEAR"))) { |
---|
| 1638 | type = InterpolateArray1D<Float,Float>::nearestNeighbour; |
---|
| 1639 | } else if (tStr.contains(String("LIN"))) { |
---|
| 1640 | type = InterpolateArray1D<Float,Float>::linear; |
---|
| 1641 | } else if (tStr.contains(String("CUB"))) { |
---|
| 1642 | type = InterpolateArray1D<Float,Float>::cubic; |
---|
| 1643 | } else if (tStr.contains(String("SPL"))) { |
---|
| 1644 | type = InterpolateArray1D<Float,Float>::spline; |
---|
| 1645 | } else { |
---|
| 1646 | throw(AipsError("Unrecognized interpolation type")); |
---|
| 1647 | } |
---|
| 1648 | } |
---|
| 1649 | |
---|
[185] | 1650 | void SDMath::putDataInSDC(SDContainer& sc, const Array<Float>& data, |
---|
[227] | 1651 | const Array<Bool>& mask) const |
---|
[169] | 1652 | { |
---|
| 1653 | sc.putSpectrum(data); |
---|
| 1654 | // |
---|
| 1655 | Array<uChar> outflags(data.shape()); |
---|
| 1656 | convertArray(outflags,!mask); |
---|
| 1657 | sc.putFlags(outflags); |
---|
| 1658 | } |
---|
[227] | 1659 | |
---|
| 1660 | Table SDMath::readAsciiFile (const String& fileName) const |
---|
| 1661 | { |
---|
[230] | 1662 | String formatString; |
---|
| 1663 | Table tbl = readAsciiTable (formatString, Table::Memory, fileName, "", "", False); |
---|
[227] | 1664 | return tbl; |
---|
| 1665 | } |
---|
[230] | 1666 | |
---|
| 1667 | |
---|
[234] | 1668 | |
---|
| 1669 | void SDMath::correctFromAsciiTable(SDMemTable* pTabOut, |
---|
| 1670 | const SDMemTable& in, const String& fileName, |
---|
| 1671 | const String& col0, const String& col1, |
---|
| 1672 | const String& methodStr, Bool doAll, |
---|
| 1673 | const Vector<Float>& xOut) const |
---|
[230] | 1674 | { |
---|
| 1675 | |
---|
| 1676 | // Read gain-elevation ascii file data into a Table. |
---|
| 1677 | |
---|
[234] | 1678 | Table geTable = readAsciiFile (fileName); |
---|
[230] | 1679 | // |
---|
[234] | 1680 | correctFromTable (pTabOut, in, geTable, col0, col1, methodStr, doAll, xOut); |
---|
[230] | 1681 | } |
---|
| 1682 | |
---|
[234] | 1683 | void SDMath::correctFromTable(SDMemTable* pTabOut, const SDMemTable& in, |
---|
| 1684 | const Table& tTable, const String& col0, |
---|
| 1685 | const String& col1, |
---|
| 1686 | const String& methodStr, Bool doAll, |
---|
| 1687 | const Vector<Float>& xOut) const |
---|
[230] | 1688 | { |
---|
| 1689 | |
---|
| 1690 | // Get data from Table |
---|
| 1691 | |
---|
| 1692 | ROScalarColumn<Float> geElCol(tTable, col0); |
---|
| 1693 | ROScalarColumn<Float> geFacCol(tTable, col1); |
---|
| 1694 | Vector<Float> xIn = geElCol.getColumn(); |
---|
| 1695 | Vector<Float> yIn = geFacCol.getColumn(); |
---|
| 1696 | Vector<Bool> maskIn(xIn.nelements(),True); |
---|
| 1697 | |
---|
| 1698 | // Interpolate (and extrapolate) with desired method |
---|
| 1699 | |
---|
| 1700 | Int method = 0; |
---|
| 1701 | convertInterpString(method, methodStr); |
---|
| 1702 | // |
---|
| 1703 | Vector<Float> yOut; |
---|
| 1704 | Vector<Bool> maskOut; |
---|
| 1705 | InterpolateArray1D<Float,Float>::interpolate(yOut, maskOut, xOut, |
---|
| 1706 | xIn, yIn, maskIn, method, |
---|
| 1707 | True, True); |
---|
[234] | 1708 | // Apply |
---|
[230] | 1709 | |
---|
[234] | 1710 | correctFromVector (pTabOut, in, doAll, yOut); |
---|
| 1711 | } |
---|
| 1712 | |
---|
| 1713 | |
---|
| 1714 | void SDMath::correctFromVector (SDMemTable* pTabOut, const SDMemTable& in, |
---|
| 1715 | Bool doAll, const Vector<Float>& factor) const |
---|
| 1716 | { |
---|
[270] | 1717 | |
---|
[230] | 1718 | // For operations only on specified cursor location |
---|
| 1719 | |
---|
| 1720 | IPosition start, end; |
---|
| 1721 | getCursorLocation(start, end, in); |
---|
| 1722 | |
---|
[270] | 1723 | // Loop over rows and apply correction factor |
---|
[230] | 1724 | |
---|
| 1725 | const uInt axis = asap::ChanAxis; |
---|
| 1726 | for (uInt i=0; i < in.nRow(); ++i) { |
---|
| 1727 | |
---|
| 1728 | // Get data |
---|
| 1729 | |
---|
| 1730 | MaskedArray<Float> dataIn(in.rowAsMaskedArray(i)); |
---|
| 1731 | |
---|
| 1732 | // Apply factor |
---|
| 1733 | |
---|
| 1734 | if (doAll) { |
---|
[270] | 1735 | dataIn *= factor[i]; |
---|
[230] | 1736 | } else { |
---|
[270] | 1737 | MaskedArray<Float> dataIn2 = dataIn(start,end); // reference |
---|
| 1738 | dataIn2 *= factor[i]; |
---|
[230] | 1739 | } |
---|
| 1740 | |
---|
| 1741 | // Write out |
---|
| 1742 | |
---|
| 1743 | SDContainer sc = in.getSDContainer(i); |
---|
[270] | 1744 | putDataInSDC(sc, dataIn.getArray(), dataIn.getMask()); |
---|
[230] | 1745 | // |
---|
| 1746 | pTabOut->putSDContainer(sc); |
---|
| 1747 | } |
---|
| 1748 | } |
---|
| 1749 | |
---|
[234] | 1750 | |
---|
[262] | 1751 | void SDMath::generateSourceTable (Vector<String>& srcTab, |
---|
| 1752 | Vector<uInt>& srcIdx, |
---|
| 1753 | Vector<uInt>& firstRow, |
---|
| 1754 | const Vector<String>& srcNames) const |
---|
| 1755 | // |
---|
| 1756 | // This algorithm assumes that if there are multiple beams |
---|
| 1757 | // that the source names are diffent. Oterwise we would need |
---|
| 1758 | // to look atthe direction for each beam... |
---|
| 1759 | // |
---|
| 1760 | { |
---|
| 1761 | const uInt nRow = srcNames.nelements(); |
---|
| 1762 | srcTab.resize(0); |
---|
| 1763 | srcIdx.resize(nRow); |
---|
| 1764 | firstRow.resize(0); |
---|
| 1765 | // |
---|
| 1766 | uInt nSrc = 0; |
---|
| 1767 | for (uInt i=0; i<nRow; i++) { |
---|
| 1768 | String srcName = srcNames[i]; |
---|
| 1769 | |
---|
| 1770 | // Do we have this source already ? |
---|
| 1771 | |
---|
| 1772 | Int idx = -1; |
---|
| 1773 | if (nSrc>0) { |
---|
| 1774 | for (uInt j=0; j<nSrc; j++) { |
---|
| 1775 | if (srcName==srcTab[j]) { |
---|
| 1776 | idx = j; |
---|
| 1777 | break; |
---|
| 1778 | } |
---|
| 1779 | } |
---|
| 1780 | } |
---|
| 1781 | |
---|
| 1782 | // Add new entry if not found |
---|
| 1783 | |
---|
| 1784 | if (idx==-1) { |
---|
| 1785 | nSrc++; |
---|
| 1786 | srcTab.resize(nSrc,True); |
---|
| 1787 | srcTab(nSrc-1) = srcName; |
---|
| 1788 | idx = nSrc-1; |
---|
| 1789 | // |
---|
| 1790 | firstRow.resize(nSrc,True); |
---|
| 1791 | firstRow(nSrc-1) = i; // First row for which this source occurs |
---|
| 1792 | } |
---|
| 1793 | |
---|
| 1794 | // Set index for this row |
---|
| 1795 | |
---|
| 1796 | srcIdx[i] = idx; |
---|
| 1797 | } |
---|
| 1798 | } |
---|
[272] | 1799 | |
---|
| 1800 | MEpoch SDMath::epochFromString (const String& str, MEpoch::Types timeRef) const |
---|
| 1801 | { |
---|
| 1802 | Quantum<Double> qt; |
---|
| 1803 | if (MVTime::read(qt,str)) { |
---|
| 1804 | MVEpoch mv(qt); |
---|
| 1805 | MEpoch me(mv, timeRef); |
---|
| 1806 | return me; |
---|
| 1807 | } else { |
---|
| 1808 | throw(AipsError("Invalid format for Epoch string")); |
---|
| 1809 | } |
---|
| 1810 | } |
---|
| 1811 | |
---|
| 1812 | |
---|
| 1813 | String SDMath::formatEpoch(const MEpoch& epoch) const |
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| 1814 | { |
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| 1815 | MVTime mvt(epoch.getValue()); |
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| 1816 | return mvt.string(MVTime::YMD) + String(" (") + epoch.getRefString() + String(")"); |
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| 1817 | } |
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| 1818 | |
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[294] | 1819 | |
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[309] | 1820 | |
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| 1821 | void SDMath::generateFrequencyAligners (PtrBlock<FrequencyAligner<Float>* >& a, |
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[294] | 1822 | const SDMemTable& in, uInt nChan, |
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| 1823 | uInt nFreqIDs, uInt nSrcTab, |
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| 1824 | const Vector<uInt>& firstRow, |
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[309] | 1825 | MFrequency::Types system, |
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[294] | 1826 | const MPosition& refPos, |
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| 1827 | const MEpoch& refEpoch) const |
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| 1828 | { |
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| 1829 | for (uInt fqID=0; fqID<nFreqIDs; fqID++) { |
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| 1830 | SpectralCoordinate sC = in.getSpectralCoordinate(fqID); |
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| 1831 | for (uInt iSrc=0; iSrc<nSrcTab; iSrc++) { |
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| 1832 | MDirection refDir = in.getDirection(firstRow[iSrc]); |
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| 1833 | uInt idx = (iSrc*nFreqIDs) + fqID; |
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[309] | 1834 | a[idx] = new FrequencyAligner<Float>(sC, nChan, refEpoch, refDir, refPos, system); |
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[294] | 1835 | } |
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| 1836 | } |
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| 1837 | } |
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| 1838 | |
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[309] | 1839 | |
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