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