source: trunk/src/STWriter.cpp@ 912

Last change on this file since 912 was 901, checked in by mar637, 19 years ago

SDContainer -> STHeader
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 9.9 KB
Line 
1//#---------------------------------------------------------------------------
2//# STWriter.cc: ASAP class to write out single dish spectra.
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: STWriter.cpp 901 2006-03-10 02:29:22Z mar637 $
30//#---------------------------------------------------------------------------
31
32#include <string>
33
34#include <casa/aips.h>
35#include <casa/Arrays/Array.h>
36#include <casa/Arrays/Vector.h>
37#include <casa/BasicSL/Complex.h>
38#include <casa/Utilities/CountedPtr.h>
39#include <casa/Utilities/Assert.h>
40
41#include <atnf/PKSIO/PKSMS2writer.h>
42#include <atnf/PKSIO/PKSSDwriter.h>
43
44#include <tables/Tables/Table.h>
45#include <tables/Tables/TableIter.h>
46#include <tables/Tables/TableRow.h>
47#include <tables/Tables/ArrayColumn.h>
48
49//#include "SDFITSImageWriter.h"
50//#include "STAsciiWriter.h"
51#include "STHeader.h"
52
53#include "STWriter.h"
54
55using namespace casa;
56namespace asap {
57
58STWriter::STWriter(const std::string &format)
59{
60 cFormat = format;
61 String t(cFormat);
62 t.upcase();
63 if (t== "MS2") {
64 cWriter = new PKSMS2writer();
65 } else if (t== "SDFITS") {
66 cWriter = new PKSSDwriter();
67 } else if (t== "FITS") {
68 cWriter = 0;
69 } else if (t== "ASCII") {
70 cWriter = 0;
71 } else {
72 throw (AipsError("Unrecognized Format"));
73 }
74}
75
76STWriter::~STWriter()
77{
78 if (cWriter) {
79 delete cWriter;
80 }
81}
82
83Int STWriter::setFormat(const std::string &format)
84{
85 if (format != cFormat) {
86 if (cWriter) delete cWriter;
87 }
88
89 cFormat = format;
90 String t(cFormat);
91 t.upcase();
92 if (t== "MS2") {
93 cWriter = new PKSMS2writer();
94 } else if (t== "SDFITS") {
95 cWriter = new PKSSDwriter();
96 } else if (t== "FITS") {
97 cWriter = 0;
98 } else if (t== "ASCII") {
99 cWriter = 0;
100 } else {
101 throw (AipsError("Unrecognized Format"));
102 }
103 return 0;
104}
105
106Int STWriter::write(const CountedPtr<Scantable> in,
107 const std::string &filename)
108{
109
110// Image FITS
111
112 if (cFormat=="FITS") {
113// Bool verbose = True;
114// SDFITSImageWriter iw;
115// if (iw.write(*in, filename, verbose)) {
116// return 0;
117// } else {
118// return 1;
119// }
120 } else if (cFormat=="ASCII") {
121 /*SDAsciiWriter iw;
122 if (iw.write(*in, filename)) {
123 return 0;
124 } else {
125 return 1;
126 }*/
127 }
128
129 // MS or SDFITS
130
131 // Extract the header from the table.
132 STHeader hdr = in->getHeader();
133 const Int nPol = hdr.npol;
134 const Int nChan = hdr.nchan;
135
136 const Table table = in->table();
137// ROArrayColumn<uInt> freqIDCol(table, "FREQ_ID");
138// Vector<uInt> freqIDs;
139
140 // Create the output file and write static data.
141 Int status;
142 if (status = cWriter->create(filename, hdr.observer, hdr.project,
143 hdr.antennaname, hdr.antennaposition,
144 hdr.obstype, hdr.equinox, hdr.freqref,
145 nChan, nPol, False, False)) {
146 throw(AipsError("Failed to create output file"));
147 }
148
149 Double srcVel = 0.0;
150
151 String fieldName, srcName, tcalTime;
152 Vector<Float> calFctr, sigma, tcal, tsys;
153 Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2,0.0);
154 Matrix<Float> spectra;
155 Matrix<uChar> flagtra;
156 Complex xCalFctr;
157 Int count = 0;
158 Int scanno = 1;
159 // use spearate iterators to ensure renumbering of all numbers
160 TableIterator scanit(table, "SCANNO");
161 while (!scanit.pastEnd() ) {
162 Table stable = scanit.table();
163 TableIterator beamit(table, "BEAMNO");
164 Int beamno = 1;
165 while (!beamit.pastEnd() ) {
166 Table btable = beamit.table();
167 // position only varies by beam
168 MDirection::ScalarColumn dirCol(btable, "DIRECTION");
169 Vector<Double> direction = dirCol(0).getAngle("rad").getValue();
170 TableIterator ifit(btable, "IFNO");
171 Int ifno = 1;
172 while (!ifit.pastEnd() ) {
173 Table itable = ifit.table();
174 TableIterator cycit(itable, "CYCLENO");
175 Int cycno = 1;
176 while (!cycit.pastEnd() ) {
177 Table ctable = cycit.table();
178 TableRow row(ctable);
179 // use the first row to fill in all the "metadata"
180 const TableRecord& rec = row.get(0);
181 ROArrayColumn<Float> specCol(ctable, "SPECTRA");
182 uInt nchan = specCol(0).nelements();
183 Double cdelt,crval,crpix, restfreq;
184 Float focusAxi, focusTan, focusRot,
185 temperature, pressure, humidity, windSpeed, windAz;
186 Vector<Float> tcalval;
187 String tmp,tmp2, tcalt;
188 in->frequencies().getEntry(crpix,crval,cdelt, rec.asuInt("FREQ_ID"));
189 in->molecules().getEntry(restfreq,tmp,tmp2,rec.asuInt("RESTFREQ_ID"));
190 in->tcal().getEntry(tcalt,tcalval,rec.asuInt("TCAL_ID"));
191 in->weather().getEntry(temperature, pressure, humidity,
192 windSpeed, windAz,
193 rec.asuInt("WEATHER_ID"));
194 Double pixel = Double(nchan/2);
195 Double refFreqNew = (pixel-crpix)*cdelt + crval;
196 // ok, now we have nrows for the n polarizations in this table
197 Matrix<Float> specs;
198 Matrix<uChar> flags;
199 Vector<Complex> xpol;
200 polConversion(specs, flags, xpol, ctable);
201 Vector<Float> tsys = tsysFromTable(ctable);
202 // dummy data
203 uInt npol = specs.ncolumn();
204 Matrix<Float> baseLin(npol,2, 0.0f);
205 Matrix<Float> baseSub(npol,9, 0.0f);
206 Complex xCalFctr;
207 Vector<Double> scanRate(2, 0.0);
208 Vector<Float> sigma(npol, 0.0f);
209 Vector<Float> calFctr(npol, 0.0f);
210
211
212 if (status = cWriter->write(scanno, cycno, rec.asDouble("TIME"),
213 rec.asDouble("INTERVAL"),
214 rec.asString("FIELDNAME"),
215 rec.asString("SRCNAME"),
216 direction,
217 srcPM, srcVel, // not in scantable yet
218 ifno,
219 refFreqNew, nchan*abs(cdelt), cdelt,
220 restfreq,
221 tcal,
222 tcalt,
223 rec.asFloat("AZIMUTH"),
224 rec.asFloat("ELEVATION"),
225 rec.asFloat("PARANGLE"),
226 focusAxi, focusTan, focusRot,//
227 temperature,
228 pressure, humidity, windSpeed, windAz,
229 rec.asInt("REFBEAM"), beamno,
230 direction,
231 scanRate,// not in scantable
232 tsys,
233 sigma, calFctr,// not in scantable
234 baseLin, baseSub,// not in scantable
235 specs, flags,
236 xCalFctr,//
237 xpol)
238 ) {
239 cerr << "Error writing output file." << endl;
240 return 1;
241 }
242
243 ++cycno;
244 ++cycit;
245 }
246 ++ifno;
247 ++ifit;
248 }
249 ++beamno;
250 ++beamit;
251 }
252 ++scanno;
253 ++scanit;
254 }
255 ostringstream oss;
256 oss << "STWriter: wrote " << count << " rows to " << filename << endl;
257 pushLog(String(oss));
258 cWriter->close();
259
260 return 0;
261}
262
263Vector<Float> STWriter::tsysFromTable(const Table& tab)
264{
265 ROArrayColumn<Float> tsysCol(tab, "TSYS");
266 Vector<Float> out(tab.nrow());
267 Vector<Float> tmp;
268 for (uInt i=0; i<tab.nrow(); ++i) {
269 tmp = tsysCol(i);
270 out[i] = tmp[0];
271 }
272}
273
274void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags,
275 Vector< Complex > & xpol, const Table & tab )
276{
277 TableRow row(tab);
278 String poltype = tab.keywordSet().asString("POLTYPE");
279 if ( poltype != "linear")
280 String msg = "poltype = " + poltype + " not yet supported in output.";
281 throw(AipsError("msg"));
282 // use the first row to fill in all the "metadata"
283 const TableRecord& rec = row.get(0);
284 ROArrayColumn<Float> specCol(tab, "SPECTRA");
285 ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
286 uInt nchan = specCol(0).nelements();
287 uInt ncols = (tab.nrow()==1 ? 1: 2 );
288 specs.resize(nchan, ncols);
289 flags.resize(nchan, ncols);
290 // the linears
291 for (uInt i=0; i<ncols; ++i) {
292 specs.column(i) = specCol(i);
293 flags.column(i) = flagCol(i);
294 }
295 // now the complex if exists
296 Bool hasxpol = False;
297 xpol.resize();
298 if ( tab.nrow() == 4 ) {
299 hasxpol = True;
300 xpol.resize(nchan);
301 Vector<Float> reals, imags;
302 reals = specCol(2); imags = specCol(3);
303 for (uInt k=0; k < nchan; ++k) {
304 xpol[k] = Complex(reals[k], imags[k]);
305 }
306 }
307}
308
309
310}
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