source: trunk/src/SDFITSImageWriter.cc@ 435

Last change on this file since 435 was 414, checked in by mar637, 20 years ago

cerr to cout changes were appropriate.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 8.0 KB
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1//#---------------------------------------------------------------------------
2//# SDFITSImageWriter.cc: ASAP class to write out single dish spectra as FITS images
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
5//# ATNF
6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//# Internet email: Malte.Marquarding@csiro.au
23//# Postal address: Malte Marquarding,
24//# Australia Telescope National Facility,
25//# P.O. Box 76,
26//# Epping, NSW, 2121,
27//# AUSTRALIA
28//#
29//# $Id: SDFITSImageWriter.cc 414 2005-02-11 06:50:42Z mar637 $
30//#---------------------------------------------------------------------------
31
32#include "SDFITSImageWriter.h"
33
34#include <casa/aips.h>
35#include <casa/Arrays/Array.h>
36#include <casa/Arrays/Vector.h>
37#include <casa/Arrays/VectorIter.h>
38#include <casa/Utilities/CountedPtr.h>
39#include <casa/OS/Directory.h>
40
41#include <coordinates/Coordinates/CoordinateUtil.h>
42#include <coordinates/Coordinates/CoordinateSystem.h>
43#include <coordinates/Coordinates/SpectralCoordinate.h>
44#include <coordinates/Coordinates/DirectionCoordinate.h>
45#include <coordinates/Coordinates/StokesCoordinate.h>
46#include <coordinates/Coordinates/ObsInfo.h>
47
48#include <images/Images/ImageFITSConverter.h>
49#include <images/Images/TempImage.h>
50
51#include <lattices/Lattices/ArrayLattice.h>
52
53#include <measures/Measures/MEpoch.h>
54
55#include <tables/Tables/Table.h>
56#include <tables/Tables/ScalarColumn.h>
57#include <tables/Tables/ArrayColumn.h>
58
59#include "SDDefs.h"
60#include "SDContainer.h"
61#include "SDMemTable.h"
62
63using namespace casa;
64using namespace asap;
65
66
67SDFITSImageWriter::SDFITSImageWriter()
68{;}
69
70SDFITSImageWriter::~SDFITSImageWriter()
71{;}
72
73
74Bool SDFITSImageWriter::write(const SDMemTable& sdTable,
75 const String& dirName, Bool verbose)
76{
77
78// Get global Header from Table
79
80 SDHeader header = sdTable.getSDHeader();
81 MEpoch::Ref timeRef(sdTable.getTimeReference());
82 MDirection::Types dirRef = sdTable.getDirectionReference();
83
84// Prepare initial ObsInfo
85
86 ObsInfo oi;
87 oi.setTelescope(String(header.antennaname));
88 oi.setObserver(String(header.observer));
89
90// Column keywords
91
92 Table tab = sdTable.table();
93 ROArrayColumn<Double> dirCol(tab, String("DIRECTION"));
94 ROScalarColumn<Double> timeCol(tab, "TIME");
95 ROArrayColumn<uInt> freqidCol(tab, "FREQID");
96 ROArrayColumn<uInt> restfreqidCol(tab, "RESTFREQID");
97 ROScalarColumn<String> srcCol(tab, "SRCNAME");
98
99// Output Image Shape; spectral axis to be updated
100
101 IPosition shapeOut(4,1); // spectral, direction (2), stokes
102
103// Axes (should be in header)
104
105 const uInt beamAxis = asap::BeamAxis;
106 const uInt ifAxis = asap::IFAxis;
107 const uInt stokesAxis = asap::PolAxis;
108 const uInt chanAxis = asap::ChanAxis;
109 const Unit RAD(String("rad"));
110
111// Output Directory
112
113 String dirName2(dirName);
114 if (dirName.length()==0) {
115 dirName2 = String("asap_FITS");
116 }
117 Directory dir(dirName2);
118 dir.create(True);
119 cout << "Created directory '" << dirName2 << "' for output files" << endl;
120
121// Temps
122
123 Vector<Int> whichStokes(1,1);
124 Array<Double> whichDir;
125 Vector<Double> lonLat(2);
126 IPosition posDir(2,0);
127 Projection proj(Projection::SIN); // What should we use ?
128 Matrix<Double> xForm(2,2);
129 xForm = 0.0; xForm.diagonal() = 1.0;
130 Vector<Double> incLonLat(2,0.0);
131 Vector<Double> refPixLonLat(2,0.0);
132
133// Loop over rows
134
135 uInt maxMem = 128;
136 Bool preferVelocity = False;
137 Bool opticalVelocity = False;
138 Int bitPix = -32; // FLoating point
139 Float minPix = 1.0;
140 Float maxPix = -1.0;
141 Bool overWrite = True;
142 Bool degLast = False;
143 Bool reallyVerbose = False;
144//
145 String errMsg;
146 const uInt nRows = sdTable.nRow();
147 for (uInt iRow=0; iRow<nRows; iRow++) {
148
149// Get data
150
151 const MaskedArray<Float>& dataIn(sdTable.rowAsMaskedArray(iRow));
152 const Array<Float>& values = dataIn.getArray();
153 const Array<Bool>& mask = dataIn.getMask();
154 const IPosition& shapeIn = dataIn.shape();
155 shapeOut(0) = shapeIn(chanAxis);
156 TiledShape tShapeOut(shapeOut);
157
158// Update ObsInfo (time changes per integration)
159
160 Double dTmp;
161 timeCol.get(iRow, dTmp);
162 MVEpoch tmp2(Quantum<Double>(dTmp, Unit(String("d"))));
163 MEpoch epoch(tmp2, timeRef);
164 oi.setObsDate(epoch);
165
166// Iterate through data in this row by spectra
167
168 ReadOnlyVectorIterator<Float> itData(values, chanAxis);
169 ReadOnlyVectorIterator<Bool> itMask(mask, chanAxis);
170 while (!itData.pastEnd()) {
171 const IPosition& pos = itData.pos();
172
173// Form SpectralCoordinate
174
175 Vector<uInt> iTmp;
176 freqidCol.get(iRow, iTmp);
177 uInt freqID = iTmp(pos(ifAxis));
178//
179 restfreqidCol.get(iRow, iTmp);
180 uInt restFreqID = iTmp(pos(ifAxis));
181//
182 SpectralCoordinate sC = sdTable.getSpectralCoordinate(freqID, restFreqID, iRow);
183
184// Form DirectionCoordinate
185
186 dirCol.get(iRow, whichDir);
187 posDir(0) = pos(beamAxis);
188 posDir(1) = 0;
189 lonLat[0] = whichDir(posDir);
190//
191 posDir(0) = pos(beamAxis);
192 posDir(1) = 1;
193 lonLat[1] = whichDir(posDir);
194 DirectionCoordinate dC(dirRef, proj, lonLat[0], lonLat[1],
195 incLonLat[0], incLonLat[1], xForm,
196 refPixLonLat[0], refPixLonLat[1]);
197
198// Form Stokes Coordinate (no true Stokes info yet);
199
200 whichStokes(0) = convertStokes(pos(stokesAxis));
201 StokesCoordinate stC(whichStokes);
202
203// Create CoordinateSystem
204
205 CoordinateSystem cSys;
206 cSys.addCoordinate(sC);
207 cSys.addCoordinate(dC);
208 cSys.addCoordinate(stC);
209 cSys.setObsInfo(oi);
210
211// Reform data into correct shape for output
212
213 Array<Float> t1(itData.array().reform(shapeOut));
214 Array<Bool> m1(itMask.array().reform(shapeOut));
215
216// Create aips++ Image
217
218 TempImage<Float> tIm(tShapeOut, cSys);
219 tIm.put(t1);
220//
221 ArrayLattice<Bool> latMask(m1);
222 tIm.attachMask(latMask);
223
224// Write out as FITS Image file
225
226 ostringstream oss;
227 oss << "row" << iRow << "_beam" << pos(0) << "_if"
228 << pos(1) << "_pol" << pos(2) << "_" << srcCol(iRow) << ".fits";
229 String tS(oss);
230 String fileName = dirName2 + String("/") + tS;
231 if (verbose) cout << "Writing row " << iRow
232 << " into file '" << tS << "'" << endl;
233//
234 Bool ok = ImageFITSConverter::ImageToFITS(errMsg, tIm, fileName,
235 maxMem, preferVelocity,
236 opticalVelocity, bitPix,
237 minPix, maxPix, overWrite,
238 degLast, reallyVerbose);
239 if (!ok) {
240 cerr << "Error writing fits - " << errMsg << endl;
241 }
242
243// Next spectrum
244
245 itData.next();
246 itMask.next();
247 }
248 }
249//
250 if (!verbose) {
251 cout << "Wrote " << nRows << " into individual FITS files" << endl;
252 }
253//
254 return True;
255}
256
257
258Int SDFITSImageWriter::convertStokes(Int val)
259{
260 Stokes::StokesTypes stokes = Stokes::RR;
261 if (val==0) {
262 stokes = Stokes::XX;
263 } else if (val==1) {
264 stokes = Stokes::YY;
265 } else if (val==2) {
266 stokes = Stokes::XY;
267 } else if (val==3) {
268 stokes = Stokes::YX;
269 } else {
270 stokes = Stokes::Undefined;
271 }
272//
273 return Int(stokes);
274}
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