[1443] | 1 | //#--------------------------------------------------------------------------- |
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| 2 | //# STFITSImageWriter.cc: Class to write out single dish spectra as FITS images |
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| 3 | //#--------------------------------------------------------------------------- |
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| 4 | //# Copyright (C) 2008 |
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| 5 | //# ATNF |
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| 6 | //# |
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| 7 | //# This program is free software; you can redistribute it and/or modify it |
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| 8 | //# under the terms of the GNU General Public License as published by the Free |
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| 9 | //# Software Foundation; either version 2 of the License, or (at your option) |
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| 10 | //# any later version. |
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| 11 | //# |
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| 12 | //# This program is distributed in the hope that it will be useful, but |
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| 13 | //# WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 15 | //# Public License for more details. |
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| 16 | //# |
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| 17 | //# You should have received a copy of the GNU General Public License along |
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| 18 | //# with this program; if not, write to the Free Software Foundation, Inc., |
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| 19 | //# 675 Massachusetts Ave, Cambridge, MA 02139, USA. |
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| 20 | //# |
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| 21 | //# Correspondence concerning this software should be addressed as follows: |
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| 22 | //# Internet email: Malte.Marquarding@csiro.au |
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| 23 | //# Postal address: Malte Marquarding, |
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| 24 | //# Australia Telescope National Facility, |
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| 25 | //# P.O. Box 76, |
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| 26 | //# Epping, NSW, 2121, |
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| 27 | //# AUSTRALIA |
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| 28 | //# |
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| 29 | //# $Id: $ |
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| 30 | //#--------------------------------------------------------------------------- |
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| 31 | |
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[1444] | 32 | #include <fitsio.h> |
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[1443] | 33 | #include <images/Images/TempImage.h> |
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| 34 | |
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| 35 | #include <lattices/Lattices/ArrayLattice.h> |
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| 36 | |
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| 37 | #include <measures/Measures/MEpoch.h> |
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| 38 | #include <measures/Measures/Stokes.h> |
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| 39 | |
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| 40 | #include <tables/Tables/Table.h> |
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| 41 | #include <tables/Tables/TableIter.h> |
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| 42 | #include <tables/Tables/TableRecord.h> |
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| 43 | #include <casa/Containers/RecordField.h> |
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| 44 | #include <tables/Tables/TableRow.h> |
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| 45 | #include <tables/Tables/ScalarColumn.h> |
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| 46 | #include <tables/Tables/ArrayColumn.h> |
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| 47 | |
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| 48 | |
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| 49 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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| 50 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 51 | #include <coordinates/Coordinates/SpectralCoordinate.h> |
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| 52 | #include <coordinates/Coordinates/DirectionCoordinate.h> |
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| 53 | #include <coordinates/Coordinates/StokesCoordinate.h> |
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| 54 | #include <coordinates/Coordinates/ObsInfo.h> |
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| 55 | |
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| 56 | #include <images/Images/ImageFITSConverter.h> |
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| 57 | #include <images/Images/TempImage.h> |
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| 58 | |
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| 59 | #include <lattices/Lattices/ArrayLattice.h> |
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| 60 | |
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| 61 | |
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| 62 | //#include "STDefs.h" |
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| 63 | #include "STHeader.h" |
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| 64 | #include "Scantable.h" |
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| 65 | #include "STFITSImageWriter.h" |
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| 66 | |
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| 67 | using namespace casa; |
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| 68 | using namespace asap; |
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| 69 | |
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| 70 | |
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| 71 | STFITSImageWriter::STFITSImageWriter() : isClass_(False) |
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| 72 | {;} |
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| 73 | |
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| 74 | STFITSImageWriter::~STFITSImageWriter() |
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| 75 | {;} |
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| 76 | |
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| 77 | |
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| 78 | Bool STFITSImageWriter::write(const Scantable& stable, |
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| 79 | const String& fileName) |
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| 80 | { |
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| 81 | |
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| 82 | // Get global Header from Table |
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| 83 | |
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| 84 | STHeader hdr = stable.getHeader(); |
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| 85 | |
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| 86 | // Column keywords |
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| 87 | |
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| 88 | Table tab = stable.table(); |
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| 89 | |
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| 90 | // Temps |
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| 91 | |
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| 92 | const Unit RAD(String("rad")); |
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| 93 | |
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| 94 | // Open and write header file |
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| 95 | |
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| 96 | String rootName(fileName); |
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| 97 | if (rootName.length()==0) rootName = String("fits"); |
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| 98 | |
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| 99 | ObsInfo oi; |
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| 100 | oi.setTelescope(String(hdr.antennaname)); |
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| 101 | oi.setObserver(String(hdr.observer)); |
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| 102 | |
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| 103 | uInt maxMem = 128; |
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| 104 | Bool preferVelocity = False; |
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| 105 | Bool opticalVelocity = False; |
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| 106 | Int bitPix = -32; // FLoating point |
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| 107 | Float minPix = 1.0; |
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| 108 | Float maxPix = -1.0; |
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| 109 | Bool overWrite = True; |
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| 110 | Bool degLast = False; |
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| 111 | Bool reallyVerbose = False; |
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| 112 | String errMsg; |
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| 113 | |
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| 114 | |
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| 115 | Block<String> cols(5); |
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| 116 | cols[0] = String("SCANNO"); |
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| 117 | cols[1] = String("CYCLENO"); |
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| 118 | cols[2] = String("BEAMNO"); |
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| 119 | cols[3] = String("IFNO"); |
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| 120 | cols[4] = String("POLNO"); |
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| 121 | TableIterator iter(tab, cols); |
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| 122 | // Open data file |
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| 123 | while ( !iter.pastEnd() ) { |
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| 124 | Table t = iter.table(); |
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| 125 | ROTableRow row(t); |
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| 126 | const TableRecord& rec = row.get(0); |
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| 127 | String dirtype = stable.getDirectionRefString(); |
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| 128 | ostringstream onstr; |
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| 129 | onstr << "SCAN" << rec.asuInt("SCANNO") |
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| 130 | << "_CYCLE" << rec.asuInt("CYCLENO") |
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| 131 | << "_BEAM" << rec.asuInt("BEAMNO") |
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| 132 | << "_IF" << rec.asuInt("IFNO") |
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| 133 | << "_POL" << rec.asuInt("POLNO"); |
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| 134 | String fileName = rootName + String(onstr) + String(".fits"); |
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| 135 | int row0 = t.rowNumbers(tab)[0]; |
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| 136 | |
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| 137 | const MPosition& mp = stable.getAntennaPosition(); |
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| 138 | const MDirection& md = stable.getDirection(row0); |
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| 139 | const MEpoch& me = stable.getEpoch(row0); |
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| 140 | oi.setObsDate(me); |
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| 141 | |
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| 142 | const Double& rf = |
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| 143 | stable.molecules().getRestFrequency(rec.asuInt("MOLECULE_ID") ); |
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| 144 | SpectralCoordinate sC = |
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| 145 | stable.frequencies().getSpectralCoordinate(md, mp, me, rf, |
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| 146 | rec.asuInt("FREQ_ID")); |
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| 147 | |
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| 148 | Int polno = rec.asuInt("POLNO"); |
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| 149 | Stokes::StokesTypes stokes = |
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| 150 | Stokes::type(stable.getPolarizationLabel(polno, stable.getPolType())); |
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| 151 | Vector<Int> whichStokes(1); |
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| 152 | whichStokes(0) = Int(stokes); |
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| 153 | StokesCoordinate stC(whichStokes); |
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| 154 | |
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| 155 | |
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| 156 | CoordinateSystem cSys; |
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| 157 | Vector<Double> lonlat = md.getAngle().getValue(); |
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| 158 | DirectionCoordinate dC = |
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| 159 | getDirectionCoordinate(stable.getDirectionRefString(), |
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| 160 | lonlat[0], lonlat[1]); |
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| 161 | cSys.addCoordinate(sC); |
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| 162 | cSys.addCoordinate(dC); |
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| 163 | cSys.addCoordinate(stC); |
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| 164 | cSys.setObsInfo(oi); |
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| 165 | |
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| 166 | Vector<Float> spec = rec.asArrayFloat("SPECTRA"); |
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| 167 | Vector<uChar> flag = rec.asArrayuChar("FLAGTRA"); |
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| 168 | Vector<Bool> bflag(flag.shape()); |
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| 169 | convertArray(bflag, flag); |
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| 170 | |
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| 171 | // Create casacore Image |
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| 172 | IPosition shp(4, 1); |
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| 173 | shp(0)= spec.nelements(); |
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| 174 | TempImage<Float> tIm(shp, cSys); |
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| 175 | tIm.put(spec); |
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| 176 | ArrayLattice<Bool> latMask(shp); |
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| 177 | IPosition where(4,0); |
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| 178 | IPosition stride(4,1); |
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| 179 | latMask.putSlice(!bflag, where, stride); |
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| 180 | tIm.attachMask(latMask); |
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| 181 | Bool ok = ImageFITSConverter::ImageToFITS(errMsg, tIm, fileName, |
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| 182 | maxMem, preferVelocity, |
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| 183 | opticalVelocity, bitPix, |
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| 184 | minPix, maxPix, overWrite, |
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| 185 | degLast, reallyVerbose); |
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| 186 | if (!ok) { |
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| 187 | throw(AipsError(errMsg)); |
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| 188 | } |
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| 189 | if (isClass_) { |
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| 190 | classHackHeader(fileName); |
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| 191 | } |
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| 192 | //pushLog(String(oss)); |
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| 193 | ++iter; |
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| 194 | } |
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| 195 | return True; |
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| 196 | } |
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| 197 | |
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| 198 | DirectionCoordinate |
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| 199 | STFITSImageWriter::getDirectionCoordinate(const String& reff, |
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| 200 | Double lon, Double lat) |
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| 201 | { |
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| 202 | |
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| 203 | Projection proj(Projection::SIN); // What should we use ? |
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| 204 | Matrix<Double> xForm(2,2); |
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| 205 | xForm = 0.0; xForm.diagonal() = 1.0; |
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| 206 | Vector<Double> incLonLat(2,0.0); |
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| 207 | Vector<Double> refPixLonLat(2,0.0); |
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| 208 | MDirection::Types mdt; |
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| 209 | if (!MDirection::getType(mdt, reff)) { |
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| 210 | throw(AipsError("Illegal Direction frame.")); |
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| 211 | } |
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| 212 | return DirectionCoordinate(mdt, proj, lon, lat, |
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| 213 | incLonLat[0], incLonLat[1], xForm, |
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| 214 | refPixLonLat[0], refPixLonLat[1]); |
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| 215 | |
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| 216 | } |
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| 217 | |
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| 218 | void STFITSImageWriter::classHackHeader(const String& filename) { |
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[1444] | 219 | int status = 0; |
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| 220 | fitsfile *fptr; |
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| 221 | if( fits_open_file(&fptr, filename.c_str(), READWRITE, &status) ) |
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| 222 | throw AipsError("FCoudn't open fits file for CLASS modification"); |
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| 223 | |
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| 224 | if ( fits_update_key(fptr, TSTRING, "CTYPE1", (char *)"FREQ", |
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| 225 | NULL, &status) ) |
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| 226 | throw AipsError("Couldn't modify CTYPE1."); |
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| 227 | float restf,refval,newfreq; |
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| 228 | fits_read_key(fptr, TFLOAT, "CRVAL1", |
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| 229 | &refval, NULL, &status); |
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| 230 | fits_read_key(fptr, TFLOAT, "RESTFREQ", |
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| 231 | &restf, NULL, &status); |
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| 232 | newfreq = refval - restf; |
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| 233 | if ( fits_update_key(fptr, TFLOAT, "CRVAL1", &newfreq, NULL, &status) ) |
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| 234 | throw AipsError("Couldn't modify CRVAL1"); |
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| 235 | fits_close_file(fptr, &status); |
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| 236 | |
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[1443] | 237 | } |
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