[806] | 1 | // |
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| 2 | // C++ Implementation: STFrequencies |
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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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| 12 | #include <casa/iostream.h> |
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| 13 | #include <casa/iomanip.h> |
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| 14 | #include <casa/Exceptions/Error.h> |
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| 15 | #include <casa/Containers/RecordField.h> |
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| 16 | #include <casa/Arrays/IPosition.h> |
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[2662] | 17 | #include <casa/Logging/LogIO.h> |
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[806] | 18 | |
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| 19 | #include <tables/Tables/TableDesc.h> |
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| 20 | #include <tables/Tables/SetupNewTab.h> |
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| 21 | #include <tables/Tables/ScaColDesc.h> |
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| 22 | #include <tables/Tables/TableRecord.h> |
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| 23 | #include <tables/Tables/TableParse.h> |
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| 24 | #include <tables/Tables/TableRow.h> |
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| 25 | |
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| 26 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 27 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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| 28 | |
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| 29 | #include "STFrequencies.h" |
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| 30 | |
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| 31 | |
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| 32 | using namespace casa; |
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| 33 | |
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| 34 | namespace asap { |
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| 35 | |
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[847] | 36 | const String STFrequencies::name_ = "FREQUENCIES"; |
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[806] | 37 | |
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[849] | 38 | STFrequencies::STFrequencies(const Scantable& parent) : |
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| 39 | STSubTable(parent, name_) |
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[806] | 40 | { |
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| 41 | setup(); |
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| 42 | } |
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| 43 | |
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[1360] | 44 | STFrequencies::STFrequencies( casa::Table tab ) : |
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[856] | 45 | STSubTable(tab, name_) |
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[849] | 46 | { |
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| 47 | refpixCol_.attach(table_,"REFPIX"); |
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| 48 | refvalCol_.attach(table_,"REFVAL"); |
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| 49 | incrCol_.attach(table_,"INCREMENT"); |
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[806] | 50 | |
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[849] | 51 | } |
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| 52 | |
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[806] | 53 | STFrequencies::~STFrequencies() |
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| 54 | { |
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| 55 | } |
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| 56 | |
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[1360] | 57 | STFrequencies & STFrequencies::operator=( const STFrequencies & other ) |
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[849] | 58 | { |
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| 59 | if ( this != &other ) { |
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| 60 | static_cast<STSubTable&>(*this) = other; |
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| 61 | refpixCol_.attach(table_,"REFPIX"); |
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| 62 | refvalCol_.attach(table_,"REFVAL"); |
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| 63 | incrCol_.attach(table_,"INCREMENT"); |
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| 64 | } |
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| 65 | return *this; |
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| 66 | } |
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| 67 | |
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[806] | 68 | void STFrequencies::setup( ) |
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| 69 | { |
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| 70 | // add to base class table |
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| 71 | table_.addColumn(ScalarColumnDesc<Double>("REFPIX")); |
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| 72 | table_.addColumn(ScalarColumnDesc<Double>("REFVAL")); |
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| 73 | table_.addColumn(ScalarColumnDesc<Double>("INCREMENT")); |
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| 74 | |
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[847] | 75 | table_.rwKeywordSet().define("FRAME", String("TOPO")); |
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| 76 | table_.rwKeywordSet().define("BASEFRAME", String("TOPO")); |
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[806] | 77 | table_.rwKeywordSet().define("EQUINOX",String( "J2000")); |
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[941] | 78 | table_.rwKeywordSet().define("UNIT", String("")); |
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[806] | 79 | table_.rwKeywordSet().define("DOPPLER", String("RADIO")); |
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| 80 | |
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| 81 | // new cached columns |
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| 82 | refpixCol_.attach(table_,"REFPIX"); |
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| 83 | refvalCol_.attach(table_,"REFVAL"); |
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| 84 | incrCol_.attach(table_,"INCREMENT"); |
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| 85 | } |
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| 86 | |
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| 87 | uInt STFrequencies::addEntry( Double refpix, Double refval, Double inc ) |
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| 88 | { |
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| 89 | // test if this already exists |
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| 90 | Table result = table_( near(table_.col("REFVAL"), refval) |
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[2242] | 91 | && near(table_.col("REFPIX"), refpix) |
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| 92 | && near(table_.col("INCREMENT"), inc), 1 ); |
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[806] | 93 | uInt resultid = 0; |
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| 94 | if ( result.nrow() > 0) { |
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| 95 | ROScalarColumn<uInt> c(result, "ID"); |
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| 96 | c.get(0, resultid); |
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| 97 | |
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| 98 | } else { |
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| 99 | uInt rno = table_.nrow(); |
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| 100 | table_.addRow(); |
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| 101 | // get last assigned freq_id and increment |
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| 102 | if ( rno > 0 ) { |
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| 103 | idCol_.get(rno-1, resultid); |
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| 104 | resultid++; |
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| 105 | } |
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| 106 | refpixCol_.put(rno, refpix); |
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| 107 | refvalCol_.put(rno, refval); |
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| 108 | incrCol_.put(rno, inc); |
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| 109 | idCol_.put(rno, resultid); |
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| 110 | } |
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| 111 | return resultid; |
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| 112 | } |
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| 113 | |
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| 114 | |
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[830] | 115 | |
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| 116 | void STFrequencies::getEntry( Double& refpix, Double& refval, Double& inc, |
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| 117 | uInt id ) |
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| 118 | { |
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[2243] | 119 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[830] | 120 | if (t.nrow() == 0 ) { |
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| 121 | throw(AipsError("STFrequencies::getEntry - freqID out of range")); |
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| 122 | } |
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| 123 | ROTableRow row(t); |
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| 124 | // get first row - there should only be one matching id |
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| 125 | const TableRecord& rec = row.get(0); |
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| 126 | refpix = rec.asDouble("REFPIX"); |
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| 127 | refval = rec.asDouble("REFVAL"); |
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| 128 | inc = rec.asDouble("INCREMENT"); |
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| 129 | } |
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| 130 | |
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[1819] | 131 | void STFrequencies::setEntry( Double refpix, Double refval, Double inc, uInt id ) |
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| 132 | { |
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[2243] | 133 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[1819] | 134 | if (t.nrow() == 0 ) { |
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| 135 | throw(AipsError("STFrequencies::getEntry - freqID out of range")); |
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| 136 | } |
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| 137 | for ( uInt i = 0 ; i < table_.nrow() ; i++ ) { |
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| 138 | uInt fid ; |
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| 139 | idCol_.get( i, fid ) ; |
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| 140 | if ( fid == id ) { |
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| 141 | refpixCol_.put( i, refpix ) ; |
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| 142 | refvalCol_.put( i, refval ) ; |
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| 143 | incrCol_.put( i, inc ) ; |
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| 144 | } |
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| 145 | } |
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| 146 | } |
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| 147 | |
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[847] | 148 | SpectralCoordinate STFrequencies::getSpectralCoordinate( uInt id ) const |
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[806] | 149 | { |
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[2243] | 150 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 151 | |
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| 152 | if (t.nrow() == 0 ) { |
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[847] | 153 | throw(AipsError("STFrequencies::getSpectralCoordinate - ID out of range")); |
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[806] | 154 | } |
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| 155 | |
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| 156 | // get the data |
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| 157 | ROTableRow row(t); |
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| 158 | // get first row - there should only be one matching id |
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| 159 | const TableRecord& rec = row.get(0); |
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[847] | 160 | return SpectralCoordinate( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 161 | rec.asDouble("INCREMENT"), |
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| 162 | rec.asDouble("REFPIX")); |
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| 163 | } |
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| 164 | |
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[1819] | 165 | /** |
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[847] | 166 | SpectralCoordinate |
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[1360] | 167 | STFrequencies::getSpectralCoordinate( const MDirection& md, |
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| 168 | const MPosition& mp, |
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| 169 | const MEpoch& me, |
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| 170 | Double restfreq, uInt id ) const |
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[1819] | 171 | **/ |
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| 172 | SpectralCoordinate |
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| 173 | STFrequencies::getSpectralCoordinate( const MDirection& md, |
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| 174 | const MPosition& mp, |
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| 175 | const MEpoch& me, |
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| 176 | Vector<Double> restfreq, uInt id ) const |
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[806] | 177 | { |
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[847] | 178 | SpectralCoordinate spc = getSpectralCoordinate(id); |
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[1819] | 179 | //spc.setRestFrequency(restfreq, True); |
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| 180 | // for now just use the first rest frequency |
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| 181 | if (restfreq.nelements()==0 ) { |
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| 182 | restfreq.resize(1); |
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| 183 | restfreq[0] = 0; |
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| 184 | } |
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| 185 | spc.setRestFrequency(restfreq[0], True); |
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[847] | 186 | if ( !spc.setReferenceConversion(getFrame(), me, mp, md) ) { |
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| 187 | throw(AipsError("Couldn't convert frequency frame.")); |
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| 188 | } |
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| 189 | String unitstr = getUnitString(); |
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| 190 | if ( !unitstr.empty() ) { |
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| 191 | Unit unitu(unitstr); |
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| 192 | if ( unitu == Unit("Hz") ) { |
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[866] | 193 | Vector<String> wau(1); wau = unitu.getName(); |
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| 194 | spc.setWorldAxisUnits(wau); |
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[847] | 195 | } else { |
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| 196 | spc.setVelocity(unitstr, getDoppler()); |
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| 197 | } |
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| 198 | } |
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| 199 | return spc; |
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| 200 | } |
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| 201 | |
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| 202 | |
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| 203 | void STFrequencies::rescale( Float factor, const std::string& mode ) |
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| 204 | { |
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[806] | 205 | TableRow row(table_); |
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| 206 | TableRecord& outrec = row.record(); |
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| 207 | RecordFieldPtr<Double> rv(outrec, "REFVAL"); |
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| 208 | RecordFieldPtr<Double> rp(outrec, "REFPIX"); |
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| 209 | RecordFieldPtr<Double> inc(outrec, "INCREMENT"); |
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| 210 | for (uInt i=0; i<table_.nrow(); ++i) { |
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| 211 | |
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| 212 | const TableRecord& rec = row.get(i); |
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| 213 | |
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[847] | 214 | SpectralCoordinate sc ( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 215 | rec.asDouble("INCREMENT"), rec.asDouble("REFPIX") ); |
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| 216 | |
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| 217 | SpectralCoordinate scout; |
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| 218 | if (mode == "BIN") { |
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| 219 | scout = binCsys(sc, Int(factor)); |
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| 220 | } else if (mode == "RESAMPLE") { |
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| 221 | scout = resampleCsys(sc, factor); |
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| 222 | } |
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| 223 | *rv = scout.referenceValue()[0]; |
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| 224 | *rp = scout.referencePixel()[0]; |
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| 225 | *inc = scout.increment()[0]; |
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| 226 | row.put(i); |
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| 227 | } |
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| 228 | } |
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| 229 | |
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| 230 | SpectralCoordinate STFrequencies::binCsys(const SpectralCoordinate& sc, |
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| 231 | Int factor) |
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| 232 | { |
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| 233 | CoordinateSystem csys; |
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| 234 | csys.addCoordinate(sc); |
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| 235 | IPosition factors(1, factor); |
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| 236 | CoordinateSystem binnedcs = |
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| 237 | CoordinateUtil::makeBinnedCoordinateSystem(factors, csys, False); |
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| 238 | return binnedcs.spectralCoordinate(0); |
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| 239 | } |
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| 240 | |
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| 241 | SpectralCoordinate STFrequencies::resampleCsys(const SpectralCoordinate& sc, |
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| 242 | Float width) |
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| 243 | { |
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| 244 | Vector<Float> offset(1,0.0); |
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[1694] | 245 | Vector<Float> factors(1,width); |
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[806] | 246 | Vector<Int> newshape; |
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| 247 | CoordinateSystem csys; |
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| 248 | csys.addCoordinate(sc); |
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| 249 | CoordinateSystem csys2 = csys.subImage(offset, factors, newshape); |
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| 250 | return csys2.spectralCoordinate(0); |
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| 251 | } |
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| 252 | |
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| 253 | |
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[847] | 254 | MFrequency::Types STFrequencies::getFrame(bool base) const |
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[806] | 255 | { |
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| 256 | // get the ref frame |
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[921] | 257 | String rf; |
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| 258 | if ( base ) |
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| 259 | rf = table_.keywordSet().asString("BASEFRAME"); |
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| 260 | else |
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| 261 | rf = table_.keywordSet().asString("FRAME"); |
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[806] | 262 | |
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| 263 | // Create SpectralCoordinate (units Hz) |
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| 264 | MFrequency::Types mft; |
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| 265 | if (!MFrequency::getType(mft, rf)) { |
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| 266 | ostringstream oss; |
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[2662] | 267 | LogIO os( casa::LogOrigin( "STFrequencies", "getFrame") ); |
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| 268 | os << LogIO::WARN << "WARNING: Frequency type unknown assuming TOPO" |
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| 269 | << LogIO::POST; |
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[806] | 270 | mft = MFrequency::TOPO; |
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| 271 | } |
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| 272 | |
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| 273 | return mft; |
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| 274 | } |
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| 275 | |
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[1360] | 276 | std::string STFrequencies::getFrameString( bool base ) const |
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[847] | 277 | { |
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| 278 | if ( base ) return table_.keywordSet().asString("BASEFRAME"); |
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| 279 | else return table_.keywordSet().asString("FRAME"); |
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| 280 | } |
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| 281 | |
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[1360] | 282 | std::string STFrequencies::getUnitString( ) const |
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[847] | 283 | { |
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| 284 | return table_.keywordSet().asString("UNIT"); |
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| 285 | } |
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| 286 | |
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[1360] | 287 | Unit STFrequencies::getUnit( ) const |
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[847] | 288 | { |
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| 289 | return Unit(table_.keywordSet().asString("UNIT")); |
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| 290 | } |
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| 291 | |
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[1360] | 292 | std::string STFrequencies::getDopplerString( ) const |
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[847] | 293 | { |
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| 294 | return table_.keywordSet().asString("DOPPLER"); |
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| 295 | } |
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| 296 | |
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[1360] | 297 | MDoppler::Types STFrequencies::getDoppler( ) const |
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[847] | 298 | { |
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| 299 | String dpl = table_.keywordSet().asString("DOPPLER"); |
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| 300 | |
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| 301 | // Create SpectralCoordinate (units Hz) |
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| 302 | MDoppler::Types mdt; |
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| 303 | if (!MDoppler::getType(mdt, dpl)) { |
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| 304 | throw(AipsError("Doppler type unknown")); |
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| 305 | } |
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| 306 | return mdt; |
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| 307 | } |
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| 308 | |
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[1375] | 309 | std::string STFrequencies::print( int id, Bool strip ) const |
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[806] | 310 | { |
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| 311 | Table t; |
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| 312 | ostringstream oss; |
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| 313 | if ( id < 0 ) t = table_; |
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[2243] | 314 | else t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 315 | ROTableRow row(t); |
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| 316 | for (uInt i=0; i<t.nrow(); ++i) { |
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| 317 | const TableRecord& rec = row.get(i); |
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| 318 | oss << setw(8) |
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[1375] | 319 | << t.keywordSet().asString("FRAME") << setw(16) << setprecision(8) |
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| 320 | << rec.asDouble("REFVAL") << setw(7) |
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| 321 | << rec.asDouble("REFPIX") |
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[1694] | 322 | << setw(15) |
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[1375] | 323 | << rec.asDouble("INCREMENT"); |
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[806] | 324 | } |
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[1375] | 325 | String outstr(oss); |
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| 326 | if (strip) { |
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| 327 | int f = outstr.find_first_not_of(' '); |
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| 328 | int l = outstr.find_last_not_of(' ', outstr.size()); |
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[1694] | 329 | if (f < 0) { |
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| 330 | f = 0; |
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[1375] | 331 | } |
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[1694] | 332 | if ( l < f || l < f ) { |
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[1375] | 333 | l = outstr.size(); |
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| 334 | } |
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| 335 | return outstr.substr(f,l); |
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| 336 | } |
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| 337 | return outstr; |
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[806] | 338 | } |
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| 339 | |
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| 340 | float STFrequencies::getRefFreq( uInt id, uInt channel ) |
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| 341 | { |
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[2243] | 342 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 343 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 344 | ROTableRow row(t); |
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| 345 | const TableRecord& rec = row.get(0); |
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| 346 | return (Double(channel/2) - rec.asDouble("REFPIX")) |
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| 347 | * rec.asDouble("INCREMENT") + rec.asDouble("REFVAL"); |
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| 348 | } |
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| 349 | |
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[1360] | 350 | bool STFrequencies::conformant( const STFrequencies& other ) const |
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[840] | 351 | { |
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| 352 | const Record& r = table_.keywordSet(); |
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| 353 | const Record& ro = other.table_.keywordSet(); |
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[847] | 354 | return ( r.asString("FRAME") == ro.asString("FRAME") && |
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[840] | 355 | r.asString("EQUINOX") == ro.asString("EQUINOX") && |
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| 356 | r.asString("UNIT") == ro.asString("UNIT") && |
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| 357 | r.asString("DOPPLER") == ro.asString("DOPPLER") |
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| 358 | ); |
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| 359 | } |
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| 360 | |
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[1360] | 361 | std::vector< std::string > STFrequencies::getInfo( ) const |
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[847] | 362 | { |
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| 363 | const Record& r = table_.keywordSet(); |
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| 364 | std::vector<std::string> out; |
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| 365 | out.push_back(r.asString("UNIT")); |
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| 366 | out.push_back(r.asString("FRAME")); |
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| 367 | out.push_back(r.asString("DOPPLER")); |
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[866] | 368 | return out; |
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[847] | 369 | } |
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| 370 | |
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[1360] | 371 | void STFrequencies::setInfo( const std::vector< std::string >& theinfo ) |
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[847] | 372 | { |
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| 373 | if ( theinfo.size() != 3 ) throw(AipsError("setInfo needs three parameters")); |
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[866] | 374 | try { |
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| 375 | setUnit(theinfo[0]); |
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| 376 | setFrame(theinfo[1]); |
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| 377 | setDoppler(theinfo[2]); |
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| 378 | } catch (AipsError& e) { |
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| 379 | throw(e); |
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| 380 | } |
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| 381 | } |
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| 382 | |
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[1360] | 383 | void STFrequencies::setUnit( const std::string & unit ) |
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[866] | 384 | { |
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| 385 | if (unit == "" || unit == "pixel" || unit == "channel" ) { |
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| 386 | table_.rwKeywordSet().define("UNIT", ""); |
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[847] | 387 | } else { |
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[866] | 388 | Unit u(unit); |
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| 389 | if ( u == Unit("km/s") || u == Unit("Hz") ) |
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| 390 | table_.rwKeywordSet().define("UNIT", unit); |
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| 391 | else { |
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| 392 | throw(AipsError("Illegal spectral unit.")); |
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| 393 | } |
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[847] | 394 | } |
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| 395 | } |
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[866] | 396 | |
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[1360] | 397 | void STFrequencies::setFrame(MFrequency::Types frame, bool base ) |
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[847] | 398 | { |
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[921] | 399 | String f = MFrequency::showType(frame); |
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| 400 | if (base) |
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| 401 | table_.rwKeywordSet().define("BASEFRAME", f); |
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| 402 | else |
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| 403 | table_.rwKeywordSet().define("FRAME", f); |
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| 404 | |
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| 405 | } |
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| 406 | |
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[1360] | 407 | void STFrequencies::setFrame( const std::string & frame, bool base ) |
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[921] | 408 | { |
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[847] | 409 | MFrequency::Types mdr; |
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| 410 | if (!MFrequency::getType(mdr, frame)) { |
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| 411 | Int a,b;const uInt* c; |
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| 412 | const String* valid = MFrequency::allMyTypes(a, b, c); |
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[866] | 413 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 414 | ostringstream oss; |
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| 415 | oss << String("Please specify a legal frequency type. Types are\n"); |
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| 416 | oss << ftypes; |
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| 417 | String msg(oss); |
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| 418 | throw(AipsError(msg)); |
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[847] | 419 | } else { |
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[921] | 420 | if (base) |
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| 421 | table_.rwKeywordSet().define("BASEFRAME", frame); |
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| 422 | else |
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| 423 | table_.rwKeywordSet().define("FRAME", frame); |
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[847] | 424 | } |
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| 425 | } |
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| 426 | |
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[1360] | 427 | void STFrequencies::setDoppler( const std::string & doppler ) |
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[866] | 428 | { |
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| 429 | MDoppler::Types mdt; |
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| 430 | if (!MDoppler::getType(mdt, doppler)) { |
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| 431 | Int a,b;const uInt* c; |
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| 432 | const String* valid = MDoppler::allMyTypes(a, b, c); |
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| 433 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 434 | ostringstream oss; |
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| 435 | oss << String("Please specify a legal doppler type. Types are\n"); |
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| 436 | oss << ftypes; |
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| 437 | String msg(oss); |
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| 438 | throw(AipsError(msg)); |
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| 439 | } else { |
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| 440 | table_.rwKeywordSet().define("DOPPLER", doppler); |
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| 441 | } |
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| 442 | } |
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[849] | 443 | |
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[1694] | 444 | void STFrequencies::shiftRefPix(int npix, uInt id) |
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[1360] | 445 | { |
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[2243] | 446 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[1360] | 447 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 448 | ScalarColumn<Double> tcol(t, "REFPIX"); |
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| 449 | tcol.put(0, tcol(0)+Double(npix)); |
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| 450 | } |
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[866] | 451 | |
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[806] | 452 | } // namespace |
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