[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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| 17 | |
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| 18 | #include <tables/Tables/TableDesc.h> |
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| 19 | #include <tables/Tables/SetupNewTab.h> |
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| 20 | #include <tables/Tables/ScaColDesc.h> |
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| 21 | #include <tables/Tables/TableRecord.h> |
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| 22 | #include <tables/Tables/TableParse.h> |
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| 23 | #include <tables/Tables/TableRow.h> |
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| 24 | |
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| 25 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 26 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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| 27 | |
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| 28 | #include "STFrequencies.h" |
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| 29 | |
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| 30 | |
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| 31 | using namespace casa; |
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| 32 | |
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| 33 | namespace asap { |
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| 34 | |
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[847] | 35 | const String STFrequencies::name_ = "FREQUENCIES"; |
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[806] | 36 | |
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[849] | 37 | STFrequencies::STFrequencies(const Scantable& parent) : |
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| 38 | STSubTable(parent, name_) |
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[806] | 39 | { |
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| 40 | setup(); |
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| 41 | } |
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| 42 | |
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[1360] | 43 | STFrequencies::STFrequencies( casa::Table tab ) : |
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[856] | 44 | STSubTable(tab, name_) |
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[849] | 45 | { |
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| 46 | refpixCol_.attach(table_,"REFPIX"); |
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| 47 | refvalCol_.attach(table_,"REFVAL"); |
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| 48 | incrCol_.attach(table_,"INCREMENT"); |
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[806] | 49 | |
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[849] | 50 | } |
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| 51 | |
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[806] | 52 | STFrequencies::~STFrequencies() |
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| 53 | { |
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| 54 | } |
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| 55 | |
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[1360] | 56 | STFrequencies & STFrequencies::operator=( const STFrequencies & other ) |
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[849] | 57 | { |
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| 58 | if ( this != &other ) { |
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| 59 | static_cast<STSubTable&>(*this) = other; |
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| 60 | refpixCol_.attach(table_,"REFPIX"); |
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| 61 | refvalCol_.attach(table_,"REFVAL"); |
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| 62 | incrCol_.attach(table_,"INCREMENT"); |
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| 63 | } |
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| 64 | return *this; |
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| 65 | } |
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| 66 | |
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[806] | 67 | void STFrequencies::setup( ) |
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| 68 | { |
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| 69 | // add to base class table |
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| 70 | table_.addColumn(ScalarColumnDesc<Double>("REFPIX")); |
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| 71 | table_.addColumn(ScalarColumnDesc<Double>("REFVAL")); |
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| 72 | table_.addColumn(ScalarColumnDesc<Double>("INCREMENT")); |
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| 73 | |
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[847] | 74 | table_.rwKeywordSet().define("FRAME", String("TOPO")); |
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| 75 | table_.rwKeywordSet().define("BASEFRAME", String("TOPO")); |
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[806] | 76 | table_.rwKeywordSet().define("EQUINOX",String( "J2000")); |
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[941] | 77 | table_.rwKeywordSet().define("UNIT", String("")); |
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[806] | 78 | table_.rwKeywordSet().define("DOPPLER", String("RADIO")); |
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| 79 | |
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| 80 | // new cached columns |
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| 81 | refpixCol_.attach(table_,"REFPIX"); |
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| 82 | refvalCol_.attach(table_,"REFVAL"); |
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| 83 | incrCol_.attach(table_,"INCREMENT"); |
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| 84 | } |
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| 85 | |
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| 86 | uInt STFrequencies::addEntry( Double refpix, Double refval, Double inc ) |
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| 87 | { |
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| 88 | // test if this already exists |
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| 89 | Table result = table_( near(table_.col("REFVAL"), refval) |
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| 90 | && near(table_.col("REFPIX"), refpix) |
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| 91 | && near(table_.col("INCREMENT"), inc) ); |
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| 92 | uInt resultid = 0; |
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| 93 | if ( result.nrow() > 0) { |
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| 94 | ROScalarColumn<uInt> c(result, "ID"); |
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| 95 | c.get(0, resultid); |
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| 96 | |
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| 97 | } else { |
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| 98 | uInt rno = table_.nrow(); |
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| 99 | table_.addRow(); |
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| 100 | // get last assigned freq_id and increment |
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| 101 | if ( rno > 0 ) { |
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| 102 | idCol_.get(rno-1, resultid); |
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| 103 | resultid++; |
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| 104 | } |
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| 105 | refpixCol_.put(rno, refpix); |
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| 106 | refvalCol_.put(rno, refval); |
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| 107 | incrCol_.put(rno, inc); |
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| 108 | idCol_.put(rno, resultid); |
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| 109 | } |
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| 110 | return resultid; |
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| 111 | } |
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| 112 | |
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| 113 | |
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[830] | 114 | |
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| 115 | void STFrequencies::getEntry( Double& refpix, Double& refval, Double& inc, |
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| 116 | uInt id ) |
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| 117 | { |
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| 118 | Table t = table_(table_.col("ID") == Int(id) ); |
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| 119 | if (t.nrow() == 0 ) { |
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| 120 | throw(AipsError("STFrequencies::getEntry - freqID out of range")); |
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| 121 | } |
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| 122 | ROTableRow row(t); |
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| 123 | // get first row - there should only be one matching id |
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| 124 | const TableRecord& rec = row.get(0); |
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| 125 | refpix = rec.asDouble("REFPIX"); |
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| 126 | refval = rec.asDouble("REFVAL"); |
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| 127 | inc = rec.asDouble("INCREMENT"); |
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| 128 | } |
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| 129 | |
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[847] | 130 | SpectralCoordinate STFrequencies::getSpectralCoordinate( uInt id ) const |
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[806] | 131 | { |
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[847] | 132 | Table t = table_(table_.col("ID") == Int(id) ); |
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[806] | 133 | |
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| 134 | if (t.nrow() == 0 ) { |
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[847] | 135 | throw(AipsError("STFrequencies::getSpectralCoordinate - ID out of range")); |
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[806] | 136 | } |
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| 137 | |
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| 138 | // get the data |
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| 139 | ROTableRow row(t); |
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| 140 | // get first row - there should only be one matching id |
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| 141 | const TableRecord& rec = row.get(0); |
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[847] | 142 | return SpectralCoordinate( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 143 | rec.asDouble("INCREMENT"), |
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| 144 | rec.asDouble("REFPIX")); |
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| 145 | } |
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| 146 | |
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[847] | 147 | SpectralCoordinate |
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[1360] | 148 | STFrequencies::getSpectralCoordinate( const MDirection& md, |
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| 149 | const MPosition& mp, |
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| 150 | const MEpoch& me, |
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| 151 | Double restfreq, uInt id ) const |
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[806] | 152 | { |
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[847] | 153 | SpectralCoordinate spc = getSpectralCoordinate(id); |
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| 154 | spc.setRestFrequency(restfreq, True); |
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| 155 | if ( !spc.setReferenceConversion(getFrame(), me, mp, md) ) { |
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| 156 | throw(AipsError("Couldn't convert frequency frame.")); |
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| 157 | } |
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| 158 | String unitstr = getUnitString(); |
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| 159 | if ( !unitstr.empty() ) { |
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| 160 | Unit unitu(unitstr); |
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| 161 | if ( unitu == Unit("Hz") ) { |
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[866] | 162 | Vector<String> wau(1); wau = unitu.getName(); |
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| 163 | spc.setWorldAxisUnits(wau); |
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[847] | 164 | } else { |
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| 165 | spc.setVelocity(unitstr, getDoppler()); |
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| 166 | } |
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| 167 | } |
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| 168 | return spc; |
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| 169 | } |
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| 170 | |
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| 171 | |
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| 172 | void STFrequencies::rescale( Float factor, const std::string& mode ) |
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| 173 | { |
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[806] | 174 | TableRow row(table_); |
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| 175 | TableRecord& outrec = row.record(); |
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| 176 | RecordFieldPtr<Double> rv(outrec, "REFVAL"); |
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| 177 | RecordFieldPtr<Double> rp(outrec, "REFPIX"); |
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| 178 | RecordFieldPtr<Double> inc(outrec, "INCREMENT"); |
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| 179 | for (uInt i=0; i<table_.nrow(); ++i) { |
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| 180 | |
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| 181 | const TableRecord& rec = row.get(i); |
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| 182 | |
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[847] | 183 | SpectralCoordinate sc ( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 184 | rec.asDouble("INCREMENT"), rec.asDouble("REFPIX") ); |
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| 185 | |
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| 186 | SpectralCoordinate scout; |
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| 187 | if (mode == "BIN") { |
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| 188 | scout = binCsys(sc, Int(factor)); |
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| 189 | } else if (mode == "RESAMPLE") { |
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| 190 | scout = resampleCsys(sc, factor); |
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| 191 | } |
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| 192 | *rv = scout.referenceValue()[0]; |
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| 193 | *rp = scout.referencePixel()[0]; |
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| 194 | *inc = scout.increment()[0]; |
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| 195 | row.put(i); |
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| 196 | } |
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| 197 | } |
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| 198 | |
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| 199 | SpectralCoordinate STFrequencies::binCsys(const SpectralCoordinate& sc, |
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| 200 | Int factor) |
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| 201 | { |
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| 202 | CoordinateSystem csys; |
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| 203 | csys.addCoordinate(sc); |
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| 204 | IPosition factors(1, factor); |
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| 205 | CoordinateSystem binnedcs = |
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| 206 | CoordinateUtil::makeBinnedCoordinateSystem(factors, csys, False); |
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| 207 | return binnedcs.spectralCoordinate(0); |
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| 208 | } |
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| 209 | |
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| 210 | SpectralCoordinate STFrequencies::resampleCsys(const SpectralCoordinate& sc, |
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| 211 | Float width) |
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| 212 | { |
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| 213 | Vector<Float> offset(1,0.0); |
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| 214 | Vector<Float> factors(1,1.0/width); |
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| 215 | Vector<Int> newshape; |
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| 216 | CoordinateSystem csys; |
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| 217 | csys.addCoordinate(sc); |
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| 218 | CoordinateSystem csys2 = csys.subImage(offset, factors, newshape); |
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| 219 | return csys2.spectralCoordinate(0); |
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| 220 | } |
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| 221 | |
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| 222 | |
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[847] | 223 | MFrequency::Types STFrequencies::getFrame(bool base) const |
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[806] | 224 | { |
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| 225 | // get the ref frame |
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[921] | 226 | String rf; |
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| 227 | if ( base ) |
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| 228 | rf = table_.keywordSet().asString("BASEFRAME"); |
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| 229 | else |
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| 230 | rf = table_.keywordSet().asString("FRAME"); |
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[806] | 231 | |
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| 232 | // Create SpectralCoordinate (units Hz) |
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| 233 | MFrequency::Types mft; |
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| 234 | if (!MFrequency::getType(mft, rf)) { |
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| 235 | ostringstream oss; |
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| 236 | pushLog("WARNING: Frequency type unknown assuming TOPO"); |
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| 237 | mft = MFrequency::TOPO; |
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| 238 | } |
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| 239 | |
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| 240 | return mft; |
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| 241 | } |
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| 242 | |
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[1360] | 243 | std::string STFrequencies::getFrameString( bool base ) const |
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[847] | 244 | { |
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| 245 | if ( base ) return table_.keywordSet().asString("BASEFRAME"); |
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| 246 | else return table_.keywordSet().asString("FRAME"); |
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| 247 | } |
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| 248 | |
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[1360] | 249 | std::string STFrequencies::getUnitString( ) const |
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[847] | 250 | { |
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| 251 | return table_.keywordSet().asString("UNIT"); |
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| 252 | } |
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| 253 | |
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[1360] | 254 | Unit STFrequencies::getUnit( ) const |
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[847] | 255 | { |
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| 256 | return Unit(table_.keywordSet().asString("UNIT")); |
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| 257 | } |
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| 258 | |
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[1360] | 259 | std::string STFrequencies::getDopplerString( ) const |
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[847] | 260 | { |
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| 261 | return table_.keywordSet().asString("DOPPLER"); |
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| 262 | } |
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| 263 | |
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[1360] | 264 | MDoppler::Types STFrequencies::getDoppler( ) const |
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[847] | 265 | { |
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| 266 | String dpl = table_.keywordSet().asString("DOPPLER"); |
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| 267 | |
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| 268 | // Create SpectralCoordinate (units Hz) |
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| 269 | MDoppler::Types mdt; |
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| 270 | if (!MDoppler::getType(mdt, dpl)) { |
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| 271 | throw(AipsError("Doppler type unknown")); |
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| 272 | } |
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| 273 | return mdt; |
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| 274 | } |
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| 275 | |
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[1375] | 276 | std::string STFrequencies::print( int id, Bool strip ) const |
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[806] | 277 | { |
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| 278 | Table t; |
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| 279 | ostringstream oss; |
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| 280 | if ( id < 0 ) t = table_; |
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| 281 | else t = table_(table_.col("ID") == Int(id) ); |
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| 282 | ROTableRow row(t); |
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| 283 | for (uInt i=0; i<t.nrow(); ++i) { |
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| 284 | const TableRecord& rec = row.get(i); |
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| 285 | oss << setw(8) |
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[1375] | 286 | << t.keywordSet().asString("FRAME") << setw(16) << setprecision(8) |
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| 287 | << rec.asDouble("REFVAL") << setw(7) |
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| 288 | << rec.asDouble("REFPIX") |
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| 289 | << setw(12) |
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| 290 | << rec.asDouble("INCREMENT"); |
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[806] | 291 | } |
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[1375] | 292 | String outstr(oss); |
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| 293 | if (strip) { |
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| 294 | int f = outstr.find_first_not_of(' '); |
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| 295 | int l = outstr.find_last_not_of(' ', outstr.size()); |
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| 296 | if (f < 0) { |
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| 297 | f = 0; |
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| 298 | } |
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| 299 | if ( l < f || l < f ) { |
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| 300 | l = outstr.size(); |
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| 301 | } |
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| 302 | return outstr.substr(f,l); |
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| 303 | } |
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| 304 | return outstr; |
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[806] | 305 | } |
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| 306 | |
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| 307 | float STFrequencies::getRefFreq( uInt id, uInt channel ) |
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| 308 | { |
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| 309 | Table t = table_(table_.col("ID") == Int(id) ); |
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| 310 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 311 | ROTableRow row(t); |
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| 312 | const TableRecord& rec = row.get(0); |
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| 313 | return (Double(channel/2) - rec.asDouble("REFPIX")) |
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| 314 | * rec.asDouble("INCREMENT") + rec.asDouble("REFVAL"); |
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| 315 | } |
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| 316 | |
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[1360] | 317 | bool STFrequencies::conformant( const STFrequencies& other ) const |
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[840] | 318 | { |
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| 319 | const Record& r = table_.keywordSet(); |
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| 320 | const Record& ro = other.table_.keywordSet(); |
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[847] | 321 | return ( r.asString("FRAME") == ro.asString("FRAME") && |
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[840] | 322 | r.asString("EQUINOX") == ro.asString("EQUINOX") && |
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| 323 | r.asString("UNIT") == ro.asString("UNIT") && |
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| 324 | r.asString("DOPPLER") == ro.asString("DOPPLER") |
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| 325 | ); |
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| 326 | } |
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| 327 | |
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[1360] | 328 | std::vector< std::string > STFrequencies::getInfo( ) const |
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[847] | 329 | { |
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| 330 | const Record& r = table_.keywordSet(); |
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| 331 | std::vector<std::string> out; |
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| 332 | out.push_back(r.asString("UNIT")); |
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| 333 | out.push_back(r.asString("FRAME")); |
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| 334 | out.push_back(r.asString("DOPPLER")); |
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[866] | 335 | return out; |
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[847] | 336 | } |
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| 337 | |
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[1360] | 338 | void STFrequencies::setInfo( const std::vector< std::string >& theinfo ) |
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[847] | 339 | { |
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| 340 | if ( theinfo.size() != 3 ) throw(AipsError("setInfo needs three parameters")); |
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[866] | 341 | try { |
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| 342 | setUnit(theinfo[0]); |
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| 343 | setFrame(theinfo[1]); |
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| 344 | setDoppler(theinfo[2]); |
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| 345 | } catch (AipsError& e) { |
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| 346 | throw(e); |
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| 347 | } |
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| 348 | } |
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| 349 | |
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[1360] | 350 | void STFrequencies::setUnit( const std::string & unit ) |
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[866] | 351 | { |
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| 352 | if (unit == "" || unit == "pixel" || unit == "channel" ) { |
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| 353 | table_.rwKeywordSet().define("UNIT", ""); |
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[847] | 354 | } else { |
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[866] | 355 | Unit u(unit); |
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| 356 | if ( u == Unit("km/s") || u == Unit("Hz") ) |
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| 357 | table_.rwKeywordSet().define("UNIT", unit); |
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| 358 | else { |
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| 359 | throw(AipsError("Illegal spectral unit.")); |
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| 360 | } |
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[847] | 361 | } |
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| 362 | } |
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[866] | 363 | |
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[1360] | 364 | void STFrequencies::setFrame(MFrequency::Types frame, bool base ) |
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[847] | 365 | { |
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[921] | 366 | String f = MFrequency::showType(frame); |
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| 367 | if (base) |
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| 368 | table_.rwKeywordSet().define("BASEFRAME", f); |
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| 369 | else |
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| 370 | table_.rwKeywordSet().define("FRAME", f); |
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| 371 | |
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| 372 | } |
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| 373 | |
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[1360] | 374 | void STFrequencies::setFrame( const std::string & frame, bool base ) |
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[921] | 375 | { |
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[847] | 376 | MFrequency::Types mdr; |
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| 377 | if (!MFrequency::getType(mdr, frame)) { |
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| 378 | Int a,b;const uInt* c; |
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| 379 | const String* valid = MFrequency::allMyTypes(a, b, c); |
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[866] | 380 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 381 | ostringstream oss; |
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| 382 | oss << String("Please specify a legal frequency type. Types are\n"); |
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| 383 | oss << ftypes; |
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| 384 | String msg(oss); |
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| 385 | throw(AipsError(msg)); |
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[847] | 386 | } else { |
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[921] | 387 | if (base) |
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| 388 | table_.rwKeywordSet().define("BASEFRAME", frame); |
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| 389 | else |
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| 390 | table_.rwKeywordSet().define("FRAME", frame); |
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[847] | 391 | } |
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| 392 | } |
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| 393 | |
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[1360] | 394 | void STFrequencies::setDoppler( const std::string & doppler ) |
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[866] | 395 | { |
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| 396 | MDoppler::Types mdt; |
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| 397 | if (!MDoppler::getType(mdt, doppler)) { |
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| 398 | Int a,b;const uInt* c; |
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| 399 | const String* valid = MDoppler::allMyTypes(a, b, c); |
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| 400 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 401 | ostringstream oss; |
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| 402 | oss << String("Please specify a legal doppler type. Types are\n"); |
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| 403 | oss << ftypes; |
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| 404 | String msg(oss); |
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| 405 | throw(AipsError(msg)); |
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| 406 | } else { |
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| 407 | table_.rwKeywordSet().define("DOPPLER", doppler); |
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| 408 | } |
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| 409 | } |
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[849] | 410 | |
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[1360] | 411 | void STFrequencies::shiftRefPix(int npix, uInt id) |
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| 412 | { |
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| 413 | Table t = table_(table_.col("ID") == Int(id) ); |
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| 414 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 415 | ScalarColumn<Double> tcol(t, "REFPIX"); |
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| 416 | tcol.put(0, tcol(0)+Double(npix)); |
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| 417 | } |
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[866] | 418 | |
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[806] | 419 | } // namespace |
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