[805] | 1 | // |
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| 2 | // C++ Implementation: STMath |
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| 3 | // |
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| 4 | // Description: |
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| 5 | // |
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| 6 | // |
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| 7 | // Author: Malte Marquarding <asap@atnf.csiro.au>, (C) 2006 |
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| 8 | // |
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| 9 | // Copyright: See COPYING file that comes with this distribution |
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| 10 | // |
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| 11 | // |
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[38] | 12 | |
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[330] | 13 | #include <casa/iomanip.h> |
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[805] | 14 | #include <casa/Exceptions/Error.h> |
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| 15 | #include <casa/Containers/Block.h> |
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[81] | 16 | #include <casa/BasicSL/String.h> |
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[805] | 17 | #include <tables/Tables/TableIter.h> |
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| 18 | #include <tables/Tables/TableCopy.h> |
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| 19 | #include <casa/Arrays/MaskArrLogi.h> |
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| 20 | #include <casa/Arrays/MaskArrMath.h> |
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| 21 | #include <casa/Arrays/ArrayLogical.h> |
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[81] | 22 | #include <casa/Arrays/ArrayMath.h> |
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[805] | 23 | #include <casa/Containers/RecordField.h> |
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| 24 | #include <tables/Tables/TableRow.h> |
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| 25 | #include <tables/Tables/TableVector.h> |
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[917] | 26 | #include <tables/Tables/TabVecMath.h> |
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[805] | 27 | #include <tables/Tables/ExprNode.h> |
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| 28 | #include <tables/Tables/TableRecord.h> |
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| 29 | #include <tables/Tables/ReadAsciiTable.h> |
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[2] | 30 | |
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[262] | 31 | #include <lattices/Lattices/LatticeUtilities.h> |
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| 32 | |
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[917] | 33 | #include <coordinates/Coordinates/SpectralCoordinate.h> |
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| 34 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 35 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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| 36 | #include <coordinates/Coordinates/FrequencyAligner.h> |
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| 37 | |
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[177] | 38 | #include <scimath/Mathematics/VectorKernel.h> |
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| 39 | #include <scimath/Mathematics/Convolver.h> |
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[234] | 40 | #include <scimath/Functionals/Polynomial.h> |
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[177] | 41 | |
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[38] | 42 | #include "MathUtils.h" |
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[805] | 43 | #include "RowAccumulator.h" |
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[878] | 44 | #include "STAttr.h" |
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[805] | 45 | #include "STMath.h" |
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[2] | 46 | |
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[805] | 47 | using namespace casa; |
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[2] | 48 | |
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[83] | 49 | using namespace asap; |
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[2] | 50 | |
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[805] | 51 | STMath::STMath(bool insitu) : |
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| 52 | insitu_(insitu) |
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[716] | 53 | { |
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| 54 | } |
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[170] | 55 | |
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| 56 | |
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[805] | 57 | STMath::~STMath() |
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[170] | 58 | { |
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| 59 | } |
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| 60 | |
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[805] | 61 | CountedPtr<Scantable> |
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[977] | 62 | STMath::average( const std::vector<CountedPtr<Scantable> >& in, |
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[858] | 63 | const std::vector<bool>& mask, |
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[805] | 64 | const std::string& weight, |
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[977] | 65 | const std::string& avmode) |
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[262] | 66 | { |
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[977] | 67 | if ( avmode == "SCAN" && in.size() != 1 ) |
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[805] | 68 | throw(AipsError("Can't perform 'SCAN' averaging on multiple tables")); |
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| 69 | WeightType wtype = stringToWeight(weight); |
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[926] | 70 | |
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[805] | 71 | // output |
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| 72 | // clone as this is non insitu |
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| 73 | bool insitu = insitu_; |
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| 74 | setInsitu(false); |
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[977] | 75 | CountedPtr< Scantable > out = getScantable(in[0], true); |
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[805] | 76 | setInsitu(insitu); |
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[977] | 77 | std::vector<CountedPtr<Scantable> >::const_iterator stit = in.begin(); |
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[862] | 78 | ++stit; |
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[977] | 79 | while ( stit != in.end() ) { |
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[862] | 80 | out->appendToHistoryTable((*stit)->history()); |
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| 81 | ++stit; |
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| 82 | } |
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[294] | 83 | |
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[805] | 84 | Table& tout = out->table(); |
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[701] | 85 | |
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[805] | 86 | /// @todo check if all scantables are conformant |
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[294] | 87 | |
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[805] | 88 | ArrayColumn<Float> specColOut(tout,"SPECTRA"); |
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| 89 | ArrayColumn<uChar> flagColOut(tout,"FLAGTRA"); |
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| 90 | ArrayColumn<Float> tsysColOut(tout,"TSYS"); |
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| 91 | ScalarColumn<Double> mjdColOut(tout,"TIME"); |
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| 92 | ScalarColumn<Double> intColOut(tout,"INTERVAL"); |
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[262] | 93 | |
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[805] | 94 | // set up the output table rows. These are based on the structure of the |
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[862] | 95 | // FIRST scantable in the vector |
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[977] | 96 | const Table& baset = in[0]->table(); |
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[262] | 97 | |
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[805] | 98 | Block<String> cols(3); |
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| 99 | cols[0] = String("BEAMNO"); |
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| 100 | cols[1] = String("IFNO"); |
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| 101 | cols[2] = String("POLNO"); |
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| 102 | if ( avmode == "SOURCE" ) { |
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| 103 | cols.resize(4); |
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| 104 | cols[3] = String("SRCNAME"); |
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[488] | 105 | } |
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[977] | 106 | if ( avmode == "SCAN" && in.size() == 1) { |
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[805] | 107 | cols.resize(4); |
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| 108 | cols[3] = String("SCANNO"); |
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[2] | 109 | } |
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[805] | 110 | uInt outrowCount = 0; |
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| 111 | TableIterator iter(baset, cols); |
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| 112 | while (!iter.pastEnd()) { |
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| 113 | Table subt = iter.table(); |
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| 114 | // copy the first row of this selection into the new table |
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| 115 | tout.addRow(); |
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| 116 | TableCopy::copyRows(tout, subt, outrowCount, 0, 1); |
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| 117 | ++outrowCount; |
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| 118 | ++iter; |
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[144] | 119 | } |
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[805] | 120 | RowAccumulator acc(wtype); |
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[858] | 121 | Vector<Bool> cmask(mask); |
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| 122 | acc.setUserMask(cmask); |
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[805] | 123 | ROTableRow row(tout); |
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| 124 | ROArrayColumn<Float> specCol, tsysCol; |
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| 125 | ROArrayColumn<uChar> flagCol; |
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| 126 | ROScalarColumn<Double> mjdCol, intCol; |
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| 127 | ROScalarColumn<Int> scanIDCol; |
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[144] | 128 | |
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[805] | 129 | for (uInt i=0; i < tout.nrow(); ++i) { |
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[977] | 130 | for ( int j=0; j < in.size(); ++j ) { |
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| 131 | const Table& tin = in[j]->table(); |
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[805] | 132 | const TableRecord& rec = row.get(i); |
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| 133 | ROScalarColumn<Double> tmp(tin, "TIME"); |
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| 134 | Double td;tmp.get(0,td); |
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| 135 | Table basesubt = tin(tin.col("BEAMNO") == Int(rec.asuInt("BEAMNO")) |
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| 136 | && tin.col("IFNO") == Int(rec.asuInt("IFNO")) |
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| 137 | && tin.col("POLNO") == Int(rec.asuInt("POLNO")) ); |
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| 138 | Table subt; |
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| 139 | if ( avmode == "SOURCE") { |
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| 140 | subt = basesubt( basesubt.col("SRCNAME") == rec.asString("SRCNAME") ); |
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| 141 | } else if (avmode == "SCAN") { |
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| 142 | subt = basesubt( basesubt.col("SCANNO") == Int(rec.asuInt("SCANNO")) ); |
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| 143 | } else { |
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| 144 | subt = basesubt; |
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| 145 | } |
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| 146 | specCol.attach(subt,"SPECTRA"); |
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| 147 | flagCol.attach(subt,"FLAGTRA"); |
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| 148 | tsysCol.attach(subt,"TSYS"); |
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| 149 | intCol.attach(subt,"INTERVAL"); |
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| 150 | mjdCol.attach(subt,"TIME"); |
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| 151 | Vector<Float> spec,tsys; |
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| 152 | Vector<uChar> flag; |
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| 153 | Double inter,time; |
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| 154 | for (uInt k = 0; k < subt.nrow(); ++k ) { |
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| 155 | flagCol.get(k, flag); |
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| 156 | Vector<Bool> bflag(flag.shape()); |
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| 157 | convertArray(bflag, flag); |
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| 158 | if ( allEQ(bflag, True) ) { |
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| 159 | continue;//don't accumulate |
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[144] | 160 | } |
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[805] | 161 | specCol.get(k, spec); |
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| 162 | tsysCol.get(k, tsys); |
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| 163 | intCol.get(k, inter); |
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| 164 | mjdCol.get(k, time); |
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| 165 | // spectrum has to be added last to enable weighting by the other values |
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| 166 | acc.add(spec, !bflag, tsys, inter, time); |
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| 167 | } |
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| 168 | } |
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| 169 | //write out |
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| 170 | specColOut.put(i, acc.getSpectrum()); |
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| 171 | const Vector<Bool>& msk = acc.getMask(); |
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| 172 | Vector<uChar> flg(msk.shape()); |
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| 173 | convertArray(flg, !msk); |
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| 174 | flagColOut.put(i, flg); |
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| 175 | tsysColOut.put(i, acc.getTsys()); |
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| 176 | intColOut.put(i, acc.getInterval()); |
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| 177 | mjdColOut.put(i, acc.getTime()); |
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| 178 | acc.reset(); |
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[144] | 179 | } |
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[805] | 180 | return out; |
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[2] | 181 | } |
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[9] | 182 | |
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[805] | 183 | CountedPtr< Scantable > STMath::getScantable(const CountedPtr< Scantable >& in, |
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| 184 | bool droprows) |
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[185] | 185 | { |
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[805] | 186 | if (insitu_) return in; |
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| 187 | else { |
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| 188 | // clone |
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| 189 | Scantable* tabp = new Scantable(*in, Bool(droprows)); |
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| 190 | return CountedPtr<Scantable>(tabp); |
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[234] | 191 | } |
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[805] | 192 | } |
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[234] | 193 | |
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[805] | 194 | CountedPtr< Scantable > STMath::unaryOperate( const CountedPtr< Scantable >& in, |
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| 195 | float val, |
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| 196 | const std::string& mode, |
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| 197 | bool tsys ) |
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| 198 | { |
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| 199 | // modes are "ADD" and "MUL" |
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| 200 | CountedPtr< Scantable > out = getScantable(in, false); |
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| 201 | Table& tab = out->table(); |
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| 202 | ArrayColumn<Float> specCol(tab,"SPECTRA"); |
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| 203 | ArrayColumn<Float> tsysCol(tab,"TSYS"); |
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| 204 | for (uInt i=0; i<tab.nrow(); ++i) { |
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| 205 | Vector<Float> spec; |
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| 206 | Vector<Float> ts; |
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| 207 | specCol.get(i, spec); |
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| 208 | tsysCol.get(i, ts); |
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| 209 | if (mode == "MUL") { |
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| 210 | spec *= val; |
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| 211 | specCol.put(i, spec); |
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| 212 | if ( tsys ) { |
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| 213 | ts *= val; |
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| 214 | tsysCol.put(i, ts); |
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| 215 | } |
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| 216 | } else if ( mode == "ADD" ) { |
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| 217 | spec += val; |
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| 218 | specCol.put(i, spec); |
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| 219 | if ( tsys ) { |
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| 220 | ts += val; |
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| 221 | tsysCol.put(i, ts); |
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| 222 | } |
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| 223 | } |
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[234] | 224 | } |
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[805] | 225 | return out; |
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| 226 | } |
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[234] | 227 | |
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[805] | 228 | MaskedArray<Float> STMath::maskedArray( const Vector<Float>& s, |
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| 229 | const Vector<uChar>& f) |
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| 230 | { |
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| 231 | Vector<Bool> mask; |
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| 232 | mask.resize(f.shape()); |
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| 233 | convertArray(mask, f); |
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| 234 | return MaskedArray<Float>(s,!mask); |
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| 235 | } |
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[248] | 236 | |
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[805] | 237 | Vector<uChar> STMath::flagsFromMA(const MaskedArray<Float>& ma) |
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| 238 | { |
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| 239 | const Vector<Bool>& m = ma.getMask(); |
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| 240 | Vector<uChar> flags(m.shape()); |
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| 241 | convertArray(flags, !m); |
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| 242 | return flags; |
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| 243 | } |
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[234] | 244 | |
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[805] | 245 | CountedPtr< Scantable > STMath::quotient( const CountedPtr< Scantable >& in, |
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| 246 | const std::string & mode, |
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| 247 | bool preserve ) |
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| 248 | { |
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| 249 | /// @todo make other modes available |
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| 250 | /// modes should be "nearest", "pair" |
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| 251 | // make this operation non insitu |
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| 252 | const Table& tin = in->table(); |
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| 253 | Table ons = tin(tin.col("SRCTYPE") == Int(0)); |
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| 254 | Table offs = tin(tin.col("SRCTYPE") == Int(1)); |
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| 255 | if ( offs.nrow() == 0 ) |
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| 256 | throw(AipsError("No 'off' scans present.")); |
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| 257 | // put all "on" scans into output table |
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[701] | 258 | |
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[805] | 259 | bool insitu = insitu_; |
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| 260 | setInsitu(false); |
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| 261 | CountedPtr< Scantable > out = getScantable(in, true); |
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| 262 | setInsitu(insitu); |
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| 263 | Table& tout = out->table(); |
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[248] | 264 | |
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[805] | 265 | TableCopy::copyRows(tout, ons); |
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| 266 | TableRow row(tout); |
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| 267 | ROScalarColumn<Double> offtimeCol(offs, "TIME"); |
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[234] | 268 | |
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[805] | 269 | ArrayColumn<Float> outspecCol(tout, "SPECTRA"); |
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| 270 | ROArrayColumn<Float> outtsysCol(tout, "TSYS"); |
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| 271 | ArrayColumn<uChar> outflagCol(tout, "FLAGTRA"); |
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| 272 | for (uInt i=0; i < tout.nrow(); ++i) { |
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| 273 | const TableRecord& rec = row.get(i); |
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| 274 | Double ontime = rec.asDouble("TIME"); |
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| 275 | ROScalarColumn<Double> offtimeCol(offs, "TIME"); |
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| 276 | Double mindeltat = min(abs(offtimeCol.getColumn() - ontime)); |
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| 277 | Table sel = offs( abs(offs.col("TIME")-ontime) <= mindeltat |
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| 278 | && offs.col("BEAMNO") == Int(rec.asuInt("BEAMNO")) |
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| 279 | && offs.col("IFNO") == Int(rec.asuInt("IFNO")) |
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| 280 | && offs.col("POLNO") == Int(rec.asuInt("POLNO")) ); |
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[780] | 281 | |
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[805] | 282 | TableRow offrow(sel); |
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| 283 | const TableRecord& offrec = offrow.get(0);//should only be one row |
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| 284 | RORecordFieldPtr< Array<Float> > specoff(offrec, "SPECTRA"); |
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| 285 | RORecordFieldPtr< Array<Float> > tsysoff(offrec, "TSYS"); |
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| 286 | RORecordFieldPtr< Array<uChar> > flagoff(offrec, "FLAGTRA"); |
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| 287 | /// @fixme this assumes tsys is a scalar not vector |
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| 288 | Float tsysoffscalar = (*tsysoff)(IPosition(1,0)); |
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| 289 | Vector<Float> specon, tsyson; |
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| 290 | outtsysCol.get(i, tsyson); |
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| 291 | outspecCol.get(i, specon); |
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| 292 | Vector<uChar> flagon; |
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| 293 | outflagCol.get(i, flagon); |
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| 294 | MaskedArray<Float> mon = maskedArray(specon, flagon); |
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| 295 | MaskedArray<Float> moff = maskedArray(*specoff, *flagoff); |
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| 296 | MaskedArray<Float> quot = (tsysoffscalar * mon / moff); |
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| 297 | if (preserve) { |
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| 298 | quot -= tsysoffscalar; |
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| 299 | } else { |
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| 300 | quot -= tsyson[0]; |
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[701] | 301 | } |
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[805] | 302 | outspecCol.put(i, quot.getArray()); |
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| 303 | outflagCol.put(i, flagsFromMA(quot)); |
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| 304 | } |
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[926] | 305 | // renumber scanno |
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| 306 | TableIterator it(tout, "SCANNO"); |
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| 307 | uInt i = 0; |
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| 308 | while ( !it.pastEnd() ) { |
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| 309 | Table t = it.table(); |
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| 310 | TableVector<uInt> vec(t, "SCANNO"); |
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| 311 | vec = i; |
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| 312 | ++i; |
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| 313 | ++it; |
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| 314 | } |
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[805] | 315 | return out; |
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| 316 | } |
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[234] | 317 | |
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[805] | 318 | CountedPtr< Scantable > STMath::freqSwitch( const CountedPtr< Scantable >& in ) |
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| 319 | { |
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| 320 | // make copy or reference |
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| 321 | CountedPtr< Scantable > out = getScantable(in, false); |
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| 322 | Table& tout = out->table(); |
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| 323 | Block<String> cols(3); |
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| 324 | cols[0] = String("SCANNO"); |
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| 325 | cols[1] = String("BEAMNO"); |
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| 326 | cols[2] = String("POLNO"); |
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| 327 | TableIterator iter(tout, cols); |
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| 328 | while (!iter.pastEnd()) { |
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| 329 | Table subt = iter.table(); |
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| 330 | // this should leave us with two rows for the two IFs....if not ignore |
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| 331 | if (subt.nrow() != 2 ) { |
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| 332 | continue; |
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[701] | 333 | } |
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[805] | 334 | ArrayColumn<Float> specCol(tout, "SPECTRA"); |
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| 335 | ArrayColumn<Float> tsysCol(tout, "TSYS"); |
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| 336 | ArrayColumn<uChar> flagCol(tout, "FLAGTRA"); |
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| 337 | Vector<Float> onspec,offspec, ontsys, offtsys; |
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| 338 | Vector<uChar> onflag, offflag; |
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| 339 | tsysCol.get(0, ontsys); tsysCol.get(1, offtsys); |
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| 340 | specCol.get(0, onspec); specCol.get(1, offspec); |
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| 341 | flagCol.get(0, onflag); flagCol.get(1, offflag); |
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| 342 | MaskedArray<Float> on = maskedArray(onspec, onflag); |
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| 343 | MaskedArray<Float> off = maskedArray(offspec, offflag); |
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| 344 | MaskedArray<Float> oncopy = on.copy(); |
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[248] | 345 | |
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[805] | 346 | on /= off; on -= 1.0f; |
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| 347 | on *= ontsys[0]; |
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| 348 | off /= oncopy; off -= 1.0f; |
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| 349 | off *= offtsys[0]; |
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| 350 | specCol.put(0, on.getArray()); |
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| 351 | const Vector<Bool>& m0 = on.getMask(); |
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| 352 | Vector<uChar> flags0(m0.shape()); |
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| 353 | convertArray(flags0, !m0); |
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| 354 | flagCol.put(0, flags0); |
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[234] | 355 | |
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[805] | 356 | specCol.put(1, off.getArray()); |
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| 357 | const Vector<Bool>& m1 = off.getMask(); |
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| 358 | Vector<uChar> flags1(m1.shape()); |
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| 359 | convertArray(flags1, !m1); |
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| 360 | flagCol.put(1, flags1); |
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[867] | 361 | ++iter; |
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[130] | 362 | } |
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[780] | 363 | |
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[805] | 364 | return out; |
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[9] | 365 | } |
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[48] | 366 | |
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[805] | 367 | std::vector< float > STMath::statistic( const CountedPtr< Scantable > & in, |
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| 368 | const std::vector< bool > & mask, |
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| 369 | const std::string& which ) |
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[130] | 370 | { |
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| 371 | |
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[805] | 372 | Vector<Bool> m(mask); |
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| 373 | const Table& tab = in->table(); |
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| 374 | ROArrayColumn<Float> specCol(tab, "SPECTRA"); |
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| 375 | ROArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
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| 376 | std::vector<float> out; |
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| 377 | for (uInt i=0; i < tab.nrow(); ++i ) { |
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| 378 | Vector<Float> spec; specCol.get(i, spec); |
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[867] | 379 | Vector<uChar> flag; flagCol.get(i, flag); |
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| 380 | MaskedArray<Float> ma = maskedArray(spec, flag); |
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| 381 | float outstat = 0.0; |
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[805] | 382 | if ( spec.nelements() == m.nelements() ) { |
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| 383 | outstat = mathutil::statistics(which, ma(m)); |
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| 384 | } else { |
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| 385 | outstat = mathutil::statistics(which, ma); |
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| 386 | } |
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| 387 | out.push_back(outstat); |
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[234] | 388 | } |
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[805] | 389 | return out; |
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[130] | 390 | } |
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| 391 | |
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[805] | 392 | CountedPtr< Scantable > STMath::bin( const CountedPtr< Scantable > & in, |
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| 393 | int width ) |
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[144] | 394 | { |
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[841] | 395 | if ( !in->getSelection().empty() ) throw(AipsError("Can't bin subset of the data.")); |
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[805] | 396 | CountedPtr< Scantable > out = getScantable(in, false); |
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| 397 | Table& tout = out->table(); |
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| 398 | out->frequencies().rescale(width, "BIN"); |
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| 399 | ArrayColumn<Float> specCol(tout, "SPECTRA"); |
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| 400 | ArrayColumn<uChar> flagCol(tout, "FLAGTRA"); |
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| 401 | for (uInt i=0; i < tout.nrow(); ++i ) { |
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| 402 | MaskedArray<Float> main = maskedArray(specCol(i), flagCol(i)); |
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| 403 | MaskedArray<Float> maout; |
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| 404 | LatticeUtilities::bin(maout, main, 0, Int(width)); |
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| 405 | /// @todo implement channel based tsys binning |
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| 406 | specCol.put(i, maout.getArray()); |
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| 407 | flagCol.put(i, flagsFromMA(maout)); |
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| 408 | // take only the first binned spectrum's length for the deprecated |
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| 409 | // global header item nChan |
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| 410 | if (i==0) tout.rwKeywordSet().define(String("nChan"), |
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| 411 | Int(maout.getArray().nelements())); |
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[169] | 412 | } |
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[805] | 413 | return out; |
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[146] | 414 | } |
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| 415 | |
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[805] | 416 | CountedPtr< Scantable > STMath::resample( const CountedPtr< Scantable >& in, |
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| 417 | const std::string& method, |
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| 418 | float width ) |
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[299] | 419 | // |
---|
| 420 | // Should add the possibility of width being specified in km/s. This means |
---|
[780] | 421 | // that for each freqID (SpectralCoordinate) we will need to convert to an |
---|
| 422 | // average channel width (say at the reference pixel). Then we would need |
---|
| 423 | // to be careful to make sure each spectrum (of different freqID) |
---|
[299] | 424 | // is the same length. |
---|
| 425 | // |
---|
| 426 | { |
---|
[317] | 427 | InterpolateArray1D<Double,Float>::InterpolationMethod interp; |
---|
[805] | 428 | Int interpMethod(stringToIMethod(method)); |
---|
[299] | 429 | |
---|
[805] | 430 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
| 431 | Table& tout = out->table(); |
---|
[299] | 432 | |
---|
| 433 | // Resample SpectralCoordinates (one per freqID) |
---|
[805] | 434 | out->frequencies().rescale(width, "RESAMPLE"); |
---|
| 435 | TableIterator iter(tout, "IFNO"); |
---|
| 436 | TableRow row(tout); |
---|
| 437 | while ( !iter.pastEnd() ) { |
---|
| 438 | Table tab = iter.table(); |
---|
| 439 | ArrayColumn<Float> specCol(tab, "SPECTRA"); |
---|
| 440 | //ArrayColumn<Float> tsysCol(tout, "TSYS"); |
---|
| 441 | ArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
---|
| 442 | Vector<Float> spec; |
---|
| 443 | Vector<uChar> flag; |
---|
| 444 | specCol.get(0,spec); // the number of channels should be constant per IF |
---|
| 445 | uInt nChanIn = spec.nelements(); |
---|
| 446 | Vector<Float> xIn(nChanIn); indgen(xIn); |
---|
| 447 | Int fac = Int(nChanIn/width); |
---|
| 448 | Vector<Float> xOut(fac+10); // 10 to be safe - resize later |
---|
| 449 | uInt k = 0; |
---|
| 450 | Float x = 0.0; |
---|
| 451 | while (x < Float(nChanIn) ) { |
---|
| 452 | xOut(k) = x; |
---|
| 453 | k++; |
---|
| 454 | x += width; |
---|
| 455 | } |
---|
| 456 | uInt nChanOut = k; |
---|
| 457 | xOut.resize(nChanOut, True); |
---|
| 458 | // process all rows for this IFNO |
---|
| 459 | Vector<Float> specOut; |
---|
| 460 | Vector<Bool> maskOut; |
---|
| 461 | Vector<uChar> flagOut; |
---|
| 462 | for (uInt i=0; i < tab.nrow(); ++i) { |
---|
| 463 | specCol.get(i, spec); |
---|
| 464 | flagCol.get(i, flag); |
---|
| 465 | Vector<Bool> mask(flag.nelements()); |
---|
| 466 | convertArray(mask, flag); |
---|
[299] | 467 | |
---|
[805] | 468 | IPosition shapeIn(spec.shape()); |
---|
| 469 | //sh.nchan = nChanOut; |
---|
| 470 | InterpolateArray1D<Float,Float>::interpolate(specOut, maskOut, xOut, |
---|
| 471 | xIn, spec, mask, |
---|
| 472 | interpMethod, True, True); |
---|
| 473 | /// @todo do the same for channel based Tsys |
---|
| 474 | flagOut.resize(maskOut.nelements()); |
---|
| 475 | convertArray(flagOut, maskOut); |
---|
| 476 | specCol.put(i, specOut); |
---|
| 477 | flagCol.put(i, flagOut); |
---|
| 478 | } |
---|
| 479 | ++iter; |
---|
[299] | 480 | } |
---|
| 481 | |
---|
[805] | 482 | return out; |
---|
| 483 | } |
---|
[299] | 484 | |
---|
[805] | 485 | STMath::imethod STMath::stringToIMethod(const std::string& in) |
---|
| 486 | { |
---|
| 487 | static STMath::imap lookup; |
---|
[299] | 488 | |
---|
[805] | 489 | // initialize the lookup table if necessary |
---|
| 490 | if ( lookup.empty() ) { |
---|
[926] | 491 | lookup["nearest"] = InterpolateArray1D<Double,Float>::nearestNeighbour; |
---|
| 492 | lookup["linear"] = InterpolateArray1D<Double,Float>::linear; |
---|
| 493 | lookup["cubic"] = InterpolateArray1D<Double,Float>::cubic; |
---|
| 494 | lookup["spline"] = InterpolateArray1D<Double,Float>::spline; |
---|
[299] | 495 | } |
---|
| 496 | |
---|
[805] | 497 | STMath::imap::const_iterator iter = lookup.find(in); |
---|
[299] | 498 | |
---|
[805] | 499 | if ( lookup.end() == iter ) { |
---|
| 500 | std::string message = in; |
---|
| 501 | message += " is not a valid interpolation mode"; |
---|
| 502 | throw(AipsError(message)); |
---|
[299] | 503 | } |
---|
[805] | 504 | return iter->second; |
---|
[299] | 505 | } |
---|
| 506 | |
---|
[805] | 507 | WeightType STMath::stringToWeight(const std::string& in) |
---|
[146] | 508 | { |
---|
[805] | 509 | static std::map<std::string, WeightType> lookup; |
---|
[434] | 510 | |
---|
[805] | 511 | // initialize the lookup table if necessary |
---|
| 512 | if ( lookup.empty() ) { |
---|
| 513 | lookup["NONE"] = asap::NONE; |
---|
| 514 | lookup["TINT"] = asap::TINT; |
---|
| 515 | lookup["TINTSYS"] = asap::TINTSYS; |
---|
| 516 | lookup["TSYS"] = asap::TSYS; |
---|
| 517 | lookup["VAR"] = asap::VAR; |
---|
| 518 | } |
---|
[434] | 519 | |
---|
[805] | 520 | std::map<std::string, WeightType>::const_iterator iter = lookup.find(in); |
---|
[294] | 521 | |
---|
[805] | 522 | if ( lookup.end() == iter ) { |
---|
| 523 | std::string message = in; |
---|
| 524 | message += " is not a valid weighting mode"; |
---|
| 525 | throw(AipsError(message)); |
---|
| 526 | } |
---|
| 527 | return iter->second; |
---|
[146] | 528 | } |
---|
| 529 | |
---|
[805] | 530 | CountedPtr< Scantable > STMath::gainElevation( const CountedPtr< Scantable >& in, |
---|
[867] | 531 | const vector< float > & coeff, |
---|
[805] | 532 | const std::string & filename, |
---|
| 533 | const std::string& method) |
---|
[165] | 534 | { |
---|
[805] | 535 | // Get elevation data from Scantable and convert to degrees |
---|
| 536 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
[926] | 537 | Table& tab = out->table(); |
---|
[805] | 538 | ROScalarColumn<Float> elev(tab, "ELEVATION"); |
---|
| 539 | Vector<Float> x = elev.getColumn(); |
---|
| 540 | x *= Float(180 / C::pi); // Degrees |
---|
[165] | 541 | |
---|
[867] | 542 | Vector<Float> coeffs(coeff); |
---|
[805] | 543 | const uInt nc = coeffs.nelements(); |
---|
| 544 | if ( filename.length() > 0 && nc > 0 ) { |
---|
| 545 | throw(AipsError("You must choose either polynomial coefficients or an ascii file, not both")); |
---|
[315] | 546 | } |
---|
[165] | 547 | |
---|
[805] | 548 | // Correct |
---|
| 549 | if ( nc > 0 || filename.length() == 0 ) { |
---|
| 550 | // Find instrument |
---|
| 551 | Bool throwit = True; |
---|
| 552 | Instrument inst = |
---|
[878] | 553 | STAttr::convertInstrument(tab.keywordSet().asString("AntennaName"), |
---|
[805] | 554 | throwit); |
---|
[165] | 555 | |
---|
[805] | 556 | // Set polynomial |
---|
| 557 | Polynomial<Float>* ppoly = 0; |
---|
| 558 | Vector<Float> coeff; |
---|
| 559 | String msg; |
---|
| 560 | if ( nc > 0 ) { |
---|
| 561 | ppoly = new Polynomial<Float>(nc); |
---|
| 562 | coeff = coeffs; |
---|
| 563 | msg = String("user"); |
---|
| 564 | } else { |
---|
[878] | 565 | STAttr sdAttr; |
---|
[805] | 566 | coeff = sdAttr.gainElevationPoly(inst); |
---|
| 567 | ppoly = new Polynomial<Float>(3); |
---|
| 568 | msg = String("built in"); |
---|
| 569 | } |
---|
[532] | 570 | |
---|
[805] | 571 | if ( coeff.nelements() > 0 ) { |
---|
| 572 | ppoly->setCoefficients(coeff); |
---|
| 573 | } else { |
---|
| 574 | delete ppoly; |
---|
| 575 | throw(AipsError("There is no known gain-elevation polynomial known for this instrument")); |
---|
| 576 | } |
---|
| 577 | ostringstream oss; |
---|
| 578 | oss << "Making polynomial correction with " << msg << " coefficients:" << endl; |
---|
| 579 | oss << " " << coeff; |
---|
| 580 | pushLog(String(oss)); |
---|
| 581 | const uInt nrow = tab.nrow(); |
---|
| 582 | Vector<Float> factor(nrow); |
---|
| 583 | for ( uInt i=0; i < nrow; ++i ) { |
---|
| 584 | factor[i] = 1.0 / (*ppoly)(x[i]); |
---|
| 585 | } |
---|
| 586 | delete ppoly; |
---|
| 587 | scaleByVector(tab, factor, true); |
---|
[532] | 588 | |
---|
[805] | 589 | } else { |
---|
| 590 | // Read and correct |
---|
| 591 | pushLog("Making correction from ascii Table"); |
---|
| 592 | scaleFromAsciiTable(tab, filename, method, x, true); |
---|
[532] | 593 | } |
---|
[805] | 594 | return out; |
---|
| 595 | } |
---|
[165] | 596 | |
---|
[805] | 597 | void STMath::scaleFromAsciiTable(Table& in, const std::string& filename, |
---|
| 598 | const std::string& method, |
---|
| 599 | const Vector<Float>& xout, bool dotsys) |
---|
| 600 | { |
---|
[165] | 601 | |
---|
[805] | 602 | // Read gain-elevation ascii file data into a Table. |
---|
[165] | 603 | |
---|
[805] | 604 | String formatString; |
---|
| 605 | Table tbl = readAsciiTable(formatString, Table::Memory, filename, "", "", False); |
---|
| 606 | scaleFromTable(in, tbl, method, xout, dotsys); |
---|
| 607 | } |
---|
[165] | 608 | |
---|
[805] | 609 | void STMath::scaleFromTable(Table& in, |
---|
| 610 | const Table& table, |
---|
| 611 | const std::string& method, |
---|
| 612 | const Vector<Float>& xout, bool dotsys) |
---|
| 613 | { |
---|
[780] | 614 | |
---|
[805] | 615 | ROScalarColumn<Float> geElCol(table, "ELEVATION"); |
---|
| 616 | ROScalarColumn<Float> geFacCol(table, "FACTOR"); |
---|
| 617 | Vector<Float> xin = geElCol.getColumn(); |
---|
| 618 | Vector<Float> yin = geFacCol.getColumn(); |
---|
| 619 | Vector<Bool> maskin(xin.nelements(),True); |
---|
[165] | 620 | |
---|
[805] | 621 | // Interpolate (and extrapolate) with desired method |
---|
[532] | 622 | |
---|
[805] | 623 | //InterpolateArray1D<Double,Float>::InterpolationMethod method; |
---|
| 624 | Int intmethod(stringToIMethod(method)); |
---|
[165] | 625 | |
---|
[805] | 626 | Vector<Float> yout; |
---|
| 627 | Vector<Bool> maskout; |
---|
| 628 | InterpolateArray1D<Float,Float>::interpolate(yout, maskout, xout, |
---|
| 629 | xin, yin, maskin, intmethod, |
---|
| 630 | True, True); |
---|
[165] | 631 | |
---|
[805] | 632 | scaleByVector(in, Float(1.0)/yout, dotsys); |
---|
[165] | 633 | } |
---|
[167] | 634 | |
---|
[805] | 635 | void STMath::scaleByVector( Table& in, |
---|
| 636 | const Vector< Float >& factor, |
---|
| 637 | bool dotsys ) |
---|
[177] | 638 | { |
---|
[805] | 639 | uInt nrow = in.nrow(); |
---|
| 640 | if ( factor.nelements() != nrow ) { |
---|
| 641 | throw(AipsError("factors.nelements() != table.nelements()")); |
---|
| 642 | } |
---|
| 643 | ArrayColumn<Float> specCol(in, "SPECTRA"); |
---|
| 644 | ArrayColumn<uChar> flagCol(in, "FLAGTRA"); |
---|
| 645 | ArrayColumn<Float> tsysCol(in, "TSYS"); |
---|
| 646 | for (uInt i=0; i < nrow; ++i) { |
---|
| 647 | MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i)); |
---|
| 648 | ma *= factor[i]; |
---|
| 649 | specCol.put(i, ma.getArray()); |
---|
| 650 | flagCol.put(i, flagsFromMA(ma)); |
---|
| 651 | if ( dotsys ) { |
---|
[926] | 652 | Vector<Float> tsys = tsysCol(i); |
---|
[805] | 653 | tsys *= factor[i]; |
---|
[926] | 654 | tsysCol.put(i,tsys); |
---|
[805] | 655 | } |
---|
| 656 | } |
---|
[177] | 657 | } |
---|
| 658 | |
---|
[805] | 659 | CountedPtr< Scantable > STMath::convertFlux( const CountedPtr< Scantable >& in, |
---|
| 660 | float d, float etaap, |
---|
| 661 | float jyperk ) |
---|
[221] | 662 | { |
---|
[805] | 663 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
| 664 | Table& tab = in->table(); |
---|
| 665 | Unit fluxUnit(tab.keywordSet().asString("FluxUnit")); |
---|
[221] | 666 | Unit K(String("K")); |
---|
| 667 | Unit JY(String("Jy")); |
---|
[701] | 668 | |
---|
[805] | 669 | bool tokelvin = true; |
---|
| 670 | Double cfac = 1.0; |
---|
[716] | 671 | |
---|
[805] | 672 | if ( fluxUnit == JY ) { |
---|
[716] | 673 | pushLog("Converting to K"); |
---|
[701] | 674 | Quantum<Double> t(1.0,fluxUnit); |
---|
| 675 | Quantum<Double> t2 = t.get(JY); |
---|
[805] | 676 | cfac = (t2 / t).getValue(); // value to Jy |
---|
[780] | 677 | |
---|
[805] | 678 | tokelvin = true; |
---|
| 679 | out->setFluxUnit("K"); |
---|
| 680 | } else if ( fluxUnit == K ) { |
---|
[716] | 681 | pushLog("Converting to Jy"); |
---|
[701] | 682 | Quantum<Double> t(1.0,fluxUnit); |
---|
| 683 | Quantum<Double> t2 = t.get(K); |
---|
[805] | 684 | cfac = (t2 / t).getValue(); // value to K |
---|
[780] | 685 | |
---|
[805] | 686 | tokelvin = false; |
---|
| 687 | out->setFluxUnit("Jy"); |
---|
[221] | 688 | } else { |
---|
[701] | 689 | throw(AipsError("Unrecognized brightness units in Table - must be consistent with Jy or K")); |
---|
[221] | 690 | } |
---|
[701] | 691 | // Make sure input values are converted to either Jy or K first... |
---|
[805] | 692 | Float factor = cfac; |
---|
[221] | 693 | |
---|
[701] | 694 | // Select method |
---|
[805] | 695 | if (jyperk > 0.0) { |
---|
| 696 | factor *= jyperk; |
---|
| 697 | if ( tokelvin ) factor = 1.0 / jyperk; |
---|
[716] | 698 | ostringstream oss; |
---|
[805] | 699 | oss << "Jy/K = " << jyperk; |
---|
[716] | 700 | pushLog(String(oss)); |
---|
[805] | 701 | Vector<Float> factors(tab.nrow(), factor); |
---|
| 702 | scaleByVector(tab,factors, false); |
---|
| 703 | } else if ( etaap > 0.0) { |
---|
| 704 | Instrument inst = |
---|
[878] | 705 | STAttr::convertInstrument(tab.keywordSet().asString("AntennaName"), True); |
---|
| 706 | STAttr sda; |
---|
[805] | 707 | if (d < 0) d = sda.diameter(inst); |
---|
[878] | 708 | Float jyPerk = STAttr::findJyPerK(etaap, d); |
---|
[716] | 709 | ostringstream oss; |
---|
[805] | 710 | oss << "Jy/K = " << jyperk; |
---|
[716] | 711 | pushLog(String(oss)); |
---|
[805] | 712 | factor *= jyperk; |
---|
| 713 | if ( tokelvin ) { |
---|
[701] | 714 | factor = 1.0 / factor; |
---|
| 715 | } |
---|
[805] | 716 | Vector<Float> factors(tab.nrow(), factor); |
---|
| 717 | scaleByVector(tab, factors, False); |
---|
[354] | 718 | } else { |
---|
[780] | 719 | |
---|
[701] | 720 | // OK now we must deal with automatic look up of values. |
---|
| 721 | // We must also deal with the fact that the factors need |
---|
| 722 | // to be computed per IF and may be different and may |
---|
| 723 | // change per integration. |
---|
[780] | 724 | |
---|
[716] | 725 | pushLog("Looking up conversion factors"); |
---|
[805] | 726 | convertBrightnessUnits(out, tokelvin, cfac); |
---|
[701] | 727 | } |
---|
[805] | 728 | |
---|
| 729 | return out; |
---|
[221] | 730 | } |
---|
| 731 | |
---|
[805] | 732 | void STMath::convertBrightnessUnits( CountedPtr<Scantable>& in, |
---|
| 733 | bool tokelvin, float cfac ) |
---|
[227] | 734 | { |
---|
[805] | 735 | Table& table = in->table(); |
---|
| 736 | Instrument inst = |
---|
[878] | 737 | STAttr::convertInstrument(table.keywordSet().asString("AntennaName"), True); |
---|
[805] | 738 | TableIterator iter(table, "FREQ_ID"); |
---|
| 739 | STFrequencies stfreqs = in->frequencies(); |
---|
[878] | 740 | STAttr sdAtt; |
---|
[805] | 741 | while (!iter.pastEnd()) { |
---|
| 742 | Table tab = iter.table(); |
---|
| 743 | ArrayColumn<Float> specCol(tab, "SPECTRA"); |
---|
| 744 | ArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
---|
| 745 | ROScalarColumn<uInt> freqidCol(tab, "FREQ_ID"); |
---|
| 746 | MEpoch::ROScalarColumn timeCol(tab, "TIME"); |
---|
[234] | 747 | |
---|
[805] | 748 | uInt freqid; freqidCol.get(0, freqid); |
---|
| 749 | Vector<Float> tmpspec; specCol.get(0, tmpspec); |
---|
[878] | 750 | // STAttr.JyPerK has a Vector interface... change sometime. |
---|
[805] | 751 | Vector<Float> freqs(1,stfreqs.getRefFreq(freqid, tmpspec.nelements())); |
---|
| 752 | for ( uInt i=0; i<tab.nrow(); ++i) { |
---|
| 753 | Float jyperk = (sdAtt.JyPerK(inst, timeCol(i), freqs))[0]; |
---|
| 754 | Float factor = cfac * jyperk; |
---|
| 755 | if ( tokelvin ) factor = Float(1.0) / factor; |
---|
| 756 | MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i)); |
---|
| 757 | ma *= factor; |
---|
| 758 | specCol.put(i, ma.getArray()); |
---|
| 759 | flagCol.put(i, flagsFromMA(ma)); |
---|
| 760 | } |
---|
[867] | 761 | ++iter; |
---|
[234] | 762 | } |
---|
[230] | 763 | } |
---|
[227] | 764 | |
---|
[805] | 765 | CountedPtr< Scantable > STMath::opacity( const CountedPtr< Scantable > & in, |
---|
| 766 | float tau ) |
---|
[234] | 767 | { |
---|
[805] | 768 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
[926] | 769 | |
---|
| 770 | Table tab = out->table(); |
---|
[234] | 771 | ROScalarColumn<Float> elev(tab, "ELEVATION"); |
---|
[805] | 772 | ArrayColumn<Float> specCol(tab, "SPECTRA"); |
---|
| 773 | ArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
---|
| 774 | for ( uInt i=0; i<tab.nrow(); ++i) { |
---|
| 775 | Float zdist = Float(C::pi_2) - elev(i); |
---|
| 776 | Float factor = exp(tau)/cos(zdist); |
---|
[926] | 777 | MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i)); |
---|
[805] | 778 | ma *= factor; |
---|
| 779 | specCol.put(i, ma.getArray()); |
---|
| 780 | flagCol.put(i, flagsFromMA(ma)); |
---|
[234] | 781 | } |
---|
[805] | 782 | return out; |
---|
[234] | 783 | } |
---|
| 784 | |
---|
[805] | 785 | CountedPtr< Scantable > STMath::smooth( const CountedPtr< Scantable >& in, |
---|
| 786 | const std::string& kernel, float width ) |
---|
[457] | 787 | { |
---|
[805] | 788 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
| 789 | Table& table = in->table(); |
---|
| 790 | VectorKernel::KernelTypes type = VectorKernel::toKernelType(kernel); |
---|
| 791 | // same IFNO should have same no of channels |
---|
| 792 | // this saves overhead |
---|
| 793 | TableIterator iter(table, "IFNO"); |
---|
| 794 | while (!iter.pastEnd()) { |
---|
| 795 | Table tab = iter.table(); |
---|
| 796 | ArrayColumn<Float> specCol(tab, "SPECTRA"); |
---|
| 797 | ArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
---|
| 798 | Vector<Float> tmpspec; specCol.get(0, tmpspec); |
---|
| 799 | uInt nchan = tmpspec.nelements(); |
---|
| 800 | Vector<Float> kvec = VectorKernel::make(type, width, nchan, True, False); |
---|
| 801 | Convolver<Float> conv(kvec, IPosition(1,nchan)); |
---|
| 802 | Vector<Float> spec; |
---|
| 803 | Vector<uChar> flag; |
---|
| 804 | for ( uInt i=0; i<tab.nrow(); ++i) { |
---|
| 805 | specCol.get(i, spec); |
---|
| 806 | flagCol.get(i, flag); |
---|
| 807 | Vector<Bool> mask(flag.nelements()); |
---|
| 808 | convertArray(mask, flag); |
---|
| 809 | Vector<Float> specout; |
---|
| 810 | if ( type == VectorKernel::HANNING ) { |
---|
| 811 | Vector<Bool> maskout; |
---|
| 812 | mathutil::hanning(specout, maskout, spec , mask); |
---|
| 813 | convertArray(flag, maskout); |
---|
| 814 | flagCol.put(i, flag); |
---|
| 815 | } else { |
---|
| 816 | mathutil::replaceMaskByZero(specout, mask); |
---|
| 817 | conv.linearConv(specout, spec); |
---|
[354] | 818 | } |
---|
[805] | 819 | specCol.put(i, specout); |
---|
| 820 | } |
---|
[867] | 821 | ++iter; |
---|
[701] | 822 | } |
---|
[805] | 823 | return out; |
---|
[701] | 824 | } |
---|
[841] | 825 | |
---|
| 826 | CountedPtr< Scantable > |
---|
| 827 | STMath::merge( const std::vector< CountedPtr < Scantable > >& in ) |
---|
| 828 | { |
---|
| 829 | if ( in.size() < 2 ) { |
---|
[862] | 830 | throw(AipsError("Need at least two scantables to perform a merge.")); |
---|
[841] | 831 | } |
---|
| 832 | std::vector<CountedPtr < Scantable > >::const_iterator it = in.begin(); |
---|
| 833 | bool insitu = insitu_; |
---|
| 834 | setInsitu(false); |
---|
[862] | 835 | CountedPtr< Scantable > out = getScantable(*it, false); |
---|
[841] | 836 | setInsitu(insitu); |
---|
| 837 | Table& tout = out->table(); |
---|
| 838 | ScalarColumn<uInt> freqidcol(tout,"FREQ_ID"), molidcol(tout, "MOLECULE_ID"); |
---|
[917] | 839 | ScalarColumn<uInt> scannocol(tout,"SCANNO"), focusidcol(tout,"FOCUS_ID"); |
---|
| 840 | // Renumber SCANNO to be 0-based |
---|
[926] | 841 | Vector<uInt> scannos = scannocol.getColumn(); |
---|
| 842 | uInt offset = min(scannos); |
---|
[917] | 843 | scannos -= offset; |
---|
[926] | 844 | scannocol.putColumn(scannos); |
---|
| 845 | uInt newscanno = max(scannos)+1; |
---|
[862] | 846 | ++it; |
---|
[841] | 847 | while ( it != in.end() ){ |
---|
| 848 | if ( ! (*it)->conformant(*out) ) { |
---|
| 849 | // log message: "ignoring scantable i, as it isn't |
---|
| 850 | // conformant with the other(s)" |
---|
| 851 | cerr << "oh oh" << endl; |
---|
| 852 | ++it; |
---|
| 853 | continue; |
---|
| 854 | } |
---|
[862] | 855 | out->appendToHistoryTable((*it)->history()); |
---|
[841] | 856 | const Table& tab = (*it)->table(); |
---|
| 857 | TableIterator scanit(tab, "SCANNO"); |
---|
| 858 | while (!scanit.pastEnd()) { |
---|
| 859 | TableIterator freqit(scanit.table(), "FREQ_ID"); |
---|
| 860 | while ( !freqit.pastEnd() ) { |
---|
| 861 | Table thetab = freqit.table(); |
---|
| 862 | uInt nrow = tout.nrow(); |
---|
| 863 | //tout.addRow(thetab.nrow()); |
---|
| 864 | TableCopy::copyRows(tout, thetab, nrow, 0, thetab.nrow()); |
---|
| 865 | ROTableRow row(thetab); |
---|
| 866 | for ( uInt i=0; i<thetab.nrow(); ++i) { |
---|
| 867 | uInt k = nrow+i; |
---|
| 868 | scannocol.put(k, newscanno); |
---|
| 869 | const TableRecord& rec = row.get(i); |
---|
| 870 | Double rv,rp,inc; |
---|
| 871 | (*it)->frequencies().getEntry(rp, rv, inc, rec.asuInt("FREQ_ID")); |
---|
| 872 | uInt id; |
---|
| 873 | id = out->frequencies().addEntry(rp, rv, inc); |
---|
| 874 | freqidcol.put(k,id); |
---|
| 875 | String name,fname;Double rf; |
---|
| 876 | (*it)->molecules().getEntry(rf, name, fname, rec.asuInt("MOLECULE_ID")); |
---|
| 877 | id = out->molecules().addEntry(rf, name, fname); |
---|
| 878 | molidcol.put(k, id); |
---|
[961] | 879 | Float frot,fax,ftan,fhand,fmount,fuser, fxy, fxyp; |
---|
| 880 | (*it)->focus().getEntry(fax, ftan, frot, fhand, |
---|
| 881 | fmount,fuser, fxy, fxyp, |
---|
| 882 | rec.asuInt("FOCUS_ID")); |
---|
| 883 | id = out->focus().addEntry(fax, ftan, frot, fhand, |
---|
| 884 | fmount,fuser, fxy, fxyp); |
---|
[841] | 885 | focusidcol.put(k, id); |
---|
| 886 | } |
---|
| 887 | ++freqit; |
---|
| 888 | } |
---|
| 889 | ++newscanno; |
---|
| 890 | ++scanit; |
---|
| 891 | } |
---|
| 892 | ++it; |
---|
| 893 | } |
---|
| 894 | return out; |
---|
| 895 | } |
---|
[896] | 896 | |
---|
| 897 | CountedPtr< Scantable > |
---|
| 898 | STMath::invertPhase( const CountedPtr < Scantable >& in ) |
---|
| 899 | { |
---|
| 900 | applyToPol(in, &STPol::invertPhase, Float(0.0)); |
---|
| 901 | } |
---|
| 902 | |
---|
| 903 | CountedPtr< Scantable > |
---|
| 904 | STMath::rotateXYPhase( const CountedPtr < Scantable >& in, float phase ) |
---|
| 905 | { |
---|
| 906 | return applyToPol(in, &STPol::rotatePhase, Float(phase)); |
---|
| 907 | } |
---|
| 908 | |
---|
| 909 | CountedPtr< Scantable > |
---|
| 910 | STMath::rotateLinPolPhase( const CountedPtr < Scantable >& in, float phase ) |
---|
| 911 | { |
---|
| 912 | return applyToPol(in, &STPol::rotateLinPolPhase, Float(phase)); |
---|
| 913 | } |
---|
| 914 | |
---|
| 915 | CountedPtr< Scantable > STMath::applyToPol( const CountedPtr<Scantable>& in, |
---|
| 916 | STPol::polOperation fptr, |
---|
| 917 | Float phase ) |
---|
| 918 | { |
---|
| 919 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
| 920 | Table& tout = out->table(); |
---|
| 921 | Block<String> cols(4); |
---|
| 922 | cols[0] = String("SCANNO"); |
---|
| 923 | cols[1] = String("BEAMNO"); |
---|
| 924 | cols[2] = String("IFNO"); |
---|
| 925 | cols[3] = String("CYCLENO"); |
---|
| 926 | TableIterator iter(tout, cols); |
---|
| 927 | STPol* stpol = NULL; |
---|
[902] | 928 | stpol =STPol::getPolClass(out->factories_, out->getPolType() ); |
---|
[896] | 929 | while (!iter.pastEnd()) { |
---|
| 930 | Table t = iter.table(); |
---|
| 931 | ArrayColumn<Float> speccol(t, "SPECTRA"); |
---|
| 932 | Matrix<Float> pols = speccol.getColumn(); |
---|
| 933 | try { |
---|
| 934 | stpol->setSpectra(pols); |
---|
| 935 | (stpol->*fptr)(phase); |
---|
| 936 | speccol.putColumn(stpol->getSpectra()); |
---|
| 937 | } catch (AipsError& e) { |
---|
| 938 | delete stpol;stpol=0; |
---|
| 939 | throw(e); |
---|
| 940 | } |
---|
| 941 | ++iter; |
---|
| 942 | } |
---|
[934] | 943 | delete stpol;stpol=0; |
---|
[896] | 944 | return out; |
---|
| 945 | } |
---|
| 946 | |
---|
| 947 | CountedPtr< Scantable > |
---|
| 948 | STMath::swapPolarisations( const CountedPtr< Scantable > & in ) |
---|
| 949 | { |
---|
| 950 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
| 951 | Table& tout = out->table(); |
---|
| 952 | Table t0 = tout(tout.col("POLNO") == 0); |
---|
| 953 | Table t1 = tout(tout.col("POLNO") == 1); |
---|
| 954 | if ( t0.nrow() != t1.nrow() ) |
---|
| 955 | throw(AipsError("Inconsistent number of polarisations")); |
---|
| 956 | ArrayColumn<Float> speccol0(t0, "SPECTRA"); |
---|
| 957 | ArrayColumn<uChar> flagcol0(t0, "FLAGTRA"); |
---|
| 958 | ArrayColumn<Float> speccol1(t1, "SPECTRA"); |
---|
| 959 | ArrayColumn<uChar> flagcol1(t1, "FLAGTRA"); |
---|
| 960 | Matrix<Float> s0 = speccol0.getColumn(); |
---|
| 961 | Matrix<uChar> f0 = flagcol0.getColumn(); |
---|
| 962 | speccol0.putColumn(speccol1.getColumn()); |
---|
| 963 | flagcol0.putColumn(flagcol1.getColumn()); |
---|
| 964 | speccol1.putColumn(s0); |
---|
| 965 | flagcol1.putColumn(f0); |
---|
| 966 | return out; |
---|
| 967 | } |
---|
[917] | 968 | |
---|
| 969 | CountedPtr< Scantable > |
---|
[940] | 970 | STMath::averagePolarisations( const CountedPtr< Scantable > & in, |
---|
| 971 | const std::vector<bool>& mask, |
---|
| 972 | const std::string& weight ) |
---|
| 973 | { |
---|
| 974 | if (in->getPolType() != "linear" || in->npol() != 2 ) |
---|
| 975 | throw(AipsError("averagePolarisations can only be applied to two linear polarisations.")); |
---|
| 976 | CountedPtr<Scantable> pol0( new Scantable(*in), false); |
---|
| 977 | CountedPtr<Scantable> pol1( new Scantable(*in), false); |
---|
| 978 | Table& tpol0 = pol0->table(); |
---|
| 979 | Table& tpol1 = pol1->table(); |
---|
| 980 | Vector<uInt> pol0rows = tpol0(tpol0.col("POLNO") == 0).rowNumbers(); |
---|
| 981 | Vector<uInt> pol1rows = tpol1(tpol1.col("POLNO") == 1).rowNumbers(); |
---|
| 982 | tpol0.removeRow(pol1rows); |
---|
| 983 | tpol1.removeRow(pol0rows); |
---|
| 984 | // give both tables the same POLNO |
---|
| 985 | TableVector<uInt> vec(tpol1,"POLNO"); |
---|
| 986 | vec = 0; |
---|
| 987 | std::vector<CountedPtr<Scantable> > pols; |
---|
| 988 | pols.push_back(pol0); |
---|
| 989 | pols.push_back(pol1); |
---|
[977] | 990 | CountedPtr< Scantable > out = average(pols, mask, weight, "NONE"); |
---|
[940] | 991 | out->table_.rwKeywordSet().define("nPol",Int(1)); |
---|
| 992 | return out; |
---|
| 993 | } |
---|
| 994 | |
---|
| 995 | |
---|
| 996 | CountedPtr< Scantable > |
---|
[917] | 997 | asap::STMath::frequencyAlign( const CountedPtr< Scantable > & in, |
---|
| 998 | const std::string & refTime, |
---|
[926] | 999 | const std::string & method) |
---|
[917] | 1000 | { |
---|
[940] | 1001 | // clone as this is not working insitu |
---|
| 1002 | bool insitu = insitu_; |
---|
| 1003 | setInsitu(false); |
---|
[917] | 1004 | CountedPtr< Scantable > out = getScantable(in, false); |
---|
[940] | 1005 | setInsitu(insitu); |
---|
[917] | 1006 | Table& tout = out->table(); |
---|
| 1007 | // clear ouput frequency table |
---|
[940] | 1008 | //Table ftable = out->frequencies().table(); |
---|
| 1009 | //ftable.removeRow(ftable.rowNumbers()); |
---|
[917] | 1010 | // Get reference Epoch to time of first row or given String |
---|
| 1011 | Unit DAY(String("d")); |
---|
| 1012 | MEpoch::Ref epochRef(in->getTimeReference()); |
---|
| 1013 | MEpoch refEpoch; |
---|
| 1014 | if (refTime.length()>0) { |
---|
| 1015 | Quantum<Double> qt; |
---|
| 1016 | if (MVTime::read(qt,refTime)) { |
---|
| 1017 | MVEpoch mv(qt); |
---|
| 1018 | refEpoch = MEpoch(mv, epochRef); |
---|
| 1019 | } else { |
---|
| 1020 | throw(AipsError("Invalid format for Epoch string")); |
---|
| 1021 | } |
---|
| 1022 | } else { |
---|
| 1023 | refEpoch = in->timeCol_(0); |
---|
| 1024 | } |
---|
| 1025 | MPosition refPos = in->getAntennaPosition(); |
---|
[940] | 1026 | |
---|
[917] | 1027 | InterpolateArray1D<Double,Float>::InterpolationMethod interp; |
---|
| 1028 | Int interpMethod(stringToIMethod(method)); |
---|
| 1029 | // test if user frame is different to base frame |
---|
| 1030 | if ( in->frequencies().getFrameString(true) |
---|
| 1031 | == in->frequencies().getFrameString(false) ) { |
---|
[985] | 1032 | throw(AipsError("Can't convert as no output frame has been set" |
---|
| 1033 | " (use set_freqframe) or it is aligned already.")); |
---|
[917] | 1034 | } |
---|
| 1035 | MFrequency::Types system = in->frequencies().getFrame(); |
---|
[940] | 1036 | MVTime mvt(refEpoch.getValue()); |
---|
| 1037 | String epochout = mvt.string(MVTime::YMD) + String(" (") + refEpoch.getRefString() + String(")"); |
---|
| 1038 | ostringstream oss; |
---|
| 1039 | oss << "Aligned at reference Epoch " << epochout |
---|
| 1040 | << " in frame " << MFrequency::showType(system); |
---|
| 1041 | pushLog(String(oss)); |
---|
[917] | 1042 | // set up the iterator |
---|
[926] | 1043 | Block<String> cols(4); |
---|
| 1044 | // select by constant direction |
---|
[917] | 1045 | cols[0] = String("SRCNAME"); |
---|
| 1046 | cols[1] = String("BEAMNO"); |
---|
| 1047 | // select by IF ( no of channels varies over this ) |
---|
| 1048 | cols[2] = String("IFNO"); |
---|
[926] | 1049 | // select by restfrequency |
---|
| 1050 | cols[3] = String("MOLECULE_ID"); |
---|
[917] | 1051 | TableIterator iter(tout, cols); |
---|
[926] | 1052 | while ( !iter.pastEnd() ) { |
---|
[917] | 1053 | Table t = iter.table(); |
---|
| 1054 | MDirection::ROScalarColumn dirCol(t, "DIRECTION"); |
---|
[926] | 1055 | TableIterator fiter(t, "FREQ_ID"); |
---|
[917] | 1056 | // determine nchan from the first row. This should work as |
---|
[926] | 1057 | // we are iterating over BEAMNO and IFNO // we should have constant direction |
---|
| 1058 | |
---|
[917] | 1059 | ROArrayColumn<Float> sCol(t, "SPECTRA"); |
---|
[926] | 1060 | MDirection direction = dirCol(0); |
---|
[917] | 1061 | uInt nchan = sCol(0).nelements(); |
---|
[926] | 1062 | while ( !fiter.pastEnd() ) { |
---|
| 1063 | Table ftab = fiter.table(); |
---|
| 1064 | ScalarColumn<uInt> freqidCol(ftab, "FREQ_ID"); |
---|
| 1065 | // get the SpectralCoordinate for the freqid, which we are iterating over |
---|
| 1066 | SpectralCoordinate sC = in->frequencies().getSpectralCoordinate(freqidCol(0)); |
---|
| 1067 | FrequencyAligner<Float> fa( sC, nchan, refEpoch, |
---|
| 1068 | direction, refPos, system ); |
---|
| 1069 | // realign the SpectralCoordinate and put into the output Scantable |
---|
| 1070 | Vector<String> units(1); |
---|
| 1071 | units = String("Hz"); |
---|
| 1072 | Bool linear=True; |
---|
| 1073 | SpectralCoordinate sc2 = fa.alignedSpectralCoordinate(linear); |
---|
| 1074 | sc2.setWorldAxisUnits(units); |
---|
[934] | 1075 | uInt id = out->frequencies().addEntry(sc2.referencePixel()[0], |
---|
| 1076 | sc2.referenceValue()[0], |
---|
| 1077 | sc2.increment()[0]); |
---|
| 1078 | TableVector<uInt> tvec(ftab, "FREQ_ID"); |
---|
| 1079 | tvec = id; |
---|
[926] | 1080 | // create the "global" abcissa for alignment with same FREQ_ID |
---|
| 1081 | Vector<Double> abc(nchan); |
---|
[917] | 1082 | Double w; |
---|
| 1083 | for (uInt i=0; i<nchan; i++) { |
---|
| 1084 | sC.toWorld(w,Double(i)); |
---|
| 1085 | abc[i] = w; |
---|
| 1086 | } |
---|
[926] | 1087 | // cache abcissa for same time stamps, so iterate over those |
---|
| 1088 | TableIterator timeiter(ftab, "TIME"); |
---|
| 1089 | while ( !timeiter.pastEnd() ) { |
---|
| 1090 | Table tab = timeiter.table(); |
---|
| 1091 | ArrayColumn<Float> specCol(tab, "SPECTRA"); |
---|
| 1092 | ArrayColumn<uChar> flagCol(tab, "FLAGTRA"); |
---|
| 1093 | MEpoch::ROScalarColumn timeCol(tab, "TIME"); |
---|
| 1094 | // use align abcissa cache after the first row |
---|
| 1095 | bool first = true; |
---|
| 1096 | // these rows should be just be POLNO |
---|
| 1097 | for (int i=0; i<tab.nrow(); ++i) { |
---|
| 1098 | // input values |
---|
| 1099 | Vector<uChar> flag = flagCol(i); |
---|
| 1100 | Vector<Bool> mask(flag.shape()); |
---|
| 1101 | Vector<Float> specOut, spec; |
---|
| 1102 | spec = specCol(i); |
---|
| 1103 | Vector<Bool> maskOut;Vector<uChar> flagOut; |
---|
| 1104 | convertArray(mask, flag); |
---|
| 1105 | // alignment |
---|
| 1106 | Bool ok = fa.align(specOut, maskOut, abc, spec, |
---|
| 1107 | mask, timeCol(i), !first, |
---|
| 1108 | interp, False); |
---|
| 1109 | // back into scantable |
---|
| 1110 | flagOut.resize(maskOut.nelements()); |
---|
| 1111 | convertArray(flagOut, maskOut); |
---|
| 1112 | flagCol.put(i, flagOut); |
---|
| 1113 | specCol.put(i, specOut); |
---|
| 1114 | // start abcissa caching |
---|
| 1115 | first = false; |
---|
[917] | 1116 | } |
---|
[926] | 1117 | // next timestamp |
---|
| 1118 | ++timeiter; |
---|
[917] | 1119 | } |
---|
[940] | 1120 | // next FREQ_ID |
---|
[926] | 1121 | ++fiter; |
---|
[917] | 1122 | } |
---|
| 1123 | // next aligner |
---|
| 1124 | ++iter; |
---|
| 1125 | } |
---|
[940] | 1126 | // set this afterwards to ensure we are doing insitu correctly. |
---|
| 1127 | out->frequencies().setFrame(system, true); |
---|
[917] | 1128 | return out; |
---|
| 1129 | } |
---|
[992] | 1130 | |
---|
| 1131 | CountedPtr<Scantable> |
---|
| 1132 | asap::STMath::convertPolarisation( const CountedPtr<Scantable>& in, |
---|
| 1133 | const std::string & newtype ) |
---|
| 1134 | { |
---|
| 1135 | if (in->npol() != 2 && in->npol() != 4) |
---|
| 1136 | throw(AipsError("Can only convert two or four polarisations.")); |
---|
| 1137 | if ( in->getPolType() == newtype ) |
---|
| 1138 | throw(AipsError("No need to convert.")); |
---|
| 1139 | bool insitu = insitu_; |
---|
| 1140 | setInsitu(false); |
---|
| 1141 | CountedPtr< Scantable > out = getScantable(in, true); |
---|
| 1142 | setInsitu(insitu); |
---|
| 1143 | Table& tout = out->table(); |
---|
| 1144 | tout.rwKeywordSet().define("POLTYPE", String(newtype)); |
---|
| 1145 | |
---|
| 1146 | Block<String> cols(4); |
---|
| 1147 | cols[0] = "SCANNO"; |
---|
| 1148 | cols[1] = "CYCLENO"; |
---|
| 1149 | cols[2] = "BEAMNO"; |
---|
| 1150 | cols[3] = "IFNO"; |
---|
| 1151 | TableIterator it(in->originalTable_, cols); |
---|
| 1152 | String basetype = in->getPolType(); |
---|
| 1153 | STPol* stpol = STPol::getPolClass(in->factories_, basetype); |
---|
| 1154 | try { |
---|
| 1155 | while ( !it.pastEnd() ) { |
---|
| 1156 | Table tab = it.table(); |
---|
| 1157 | uInt row = tab.rowNumbers()[0]; |
---|
| 1158 | stpol->setSpectra(in->getPolMatrix(row)); |
---|
| 1159 | Float fang,fhand,parang; |
---|
| 1160 | fang = in->focusTable_.getTotalFeedAngle(in->mfocusidCol_(row)); |
---|
| 1161 | fhand = in->focusTable_.getFeedHand(in->mfocusidCol_(row)); |
---|
| 1162 | parang = in->paraCol_(row); |
---|
| 1163 | /// @todo re-enable this |
---|
| 1164 | // disable total feed angle to support paralactifying Caswell style |
---|
| 1165 | stpol->setPhaseCorrections(parang, -parang, fhand); |
---|
| 1166 | Int npolout = 0; |
---|
| 1167 | for (uInt i=0; i<tab.nrow(); ++i) { |
---|
| 1168 | Vector<Float> outvec = stpol->getSpectrum(i, newtype); |
---|
| 1169 | if ( outvec.nelements() > 0 ) { |
---|
| 1170 | tout.addRow(); |
---|
| 1171 | TableCopy::copyRows(tout, tab, tout.nrow()-1, 0, 1); |
---|
| 1172 | ArrayColumn<Float> sCol(tout,"SPECTRA"); |
---|
| 1173 | ScalarColumn<uInt> pCol(tout,"POLNO"); |
---|
| 1174 | sCol.put(tout.nrow()-1 ,outvec); |
---|
| 1175 | pCol.put(tout.nrow()-1 ,uInt(npolout)); |
---|
| 1176 | npolout++; |
---|
| 1177 | } |
---|
| 1178 | } |
---|
| 1179 | tout.rwKeywordSet().define("nPol", npolout); |
---|
| 1180 | ++it; |
---|
| 1181 | } |
---|
| 1182 | } catch (AipsError& e) { |
---|
| 1183 | delete stpol; |
---|
| 1184 | throw(e); |
---|
| 1185 | } |
---|
| 1186 | delete stpol; |
---|
| 1187 | return out; |
---|
| 1188 | } |
---|