source: trunk/src/STWriter.cpp@ 998

Last change on this file since 998 was 996, checked in by mar637, 19 years ago

more fixes after compiling with -Wall.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 10.1 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 996 2006-04-06 03:45:58Z 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 format_ = format;
61 String t(format_);
62 t.upcase();
63 if (t== "MS2") {
64 writer_ = new PKSMS2writer();
65 } else if (t== "SDFITS") {
66 writer_ = new PKSSDwriter();
67 } else if (t== "FITS") {
68 writer_ = 0;
69 } else if (t== "ASCII") {
70 writer_ = 0;
71 } else {
72 throw (AipsError("Unrecognized export format"));
73 }
74}
75
76STWriter::~STWriter()
77{
78 if (writer_) {
79 delete writer_;
80 }
81}
82
83Int STWriter::setFormat(const std::string &format)
84{
85 if (format != format_) {
86 if (writer_) delete writer_;
87 }
88
89 format_ = format;
90 String t(format_);
91 t.upcase();
92 if (t== "MS2") {
93 writer_ = new PKSMS2writer();
94 } else if (t== "SDFITS") {
95 writer_ = new PKSSDwriter();
96 } else if (t== "FITS") {
97 writer_ = 0;
98 } else if (t== "ASCII") {
99 writer_ = 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 (format_=="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 (format_=="ASCII") {
121 STAsciiWriter 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 Bool havexpol = Bool(in->npol() > 2);
143 status = writer_->create(filename, hdr.observer, hdr.project,
144 hdr.antennaname, hdr.antennaposition,
145 hdr.obstype, hdr.equinox, hdr.freqref,
146 nChan, nPol, False, havexpol);
147 if ( status ) {
148 throw(AipsError("Failed to create output file"));
149 }
150
151 Double srcVel = 0.0;
152
153 String fieldName, srcName, tcalTime;
154 Vector<Float> calFctr, sigma, tcal, tsys;
155 Vector<Double> direction(2), scanRate(2), srcDir(2), srcPM(2,0.0);
156 Matrix<Float> spectra;
157 Matrix<uChar> flagtra;
158 Complex xCalFctr;
159 Int count = 0;
160 Int scanno = 1;
161 // use spearate iterators to ensure renumbering of all numbers
162 TableIterator scanit(table, "SCANNO");
163 while (!scanit.pastEnd() ) {
164 Table stable = scanit.table();
165 TableIterator beamit(stable, "BEAMNO");
166 Int beamno = 1;
167 while (!beamit.pastEnd() ) {
168 Table btable = beamit.table();
169 // position only varies by beam
170 MDirection::ScalarColumn dirCol(btable, "DIRECTION");
171 Vector<Double> direction = dirCol(0).getAngle("rad").getValue();
172 TableIterator cycit(btable, "CYCLENO");
173 Int cycno = 1;
174 while (!cycit.pastEnd() ) {
175 Table ctable = cycit.table();
176 TableIterator ifit(ctable, "IFNO");
177 Int ifno = 1;
178 while (!ifit.pastEnd() ) {
179 Table itable = ifit.table();
180 TableRow row(itable);
181 // use the first row to fill in all the "metadata"
182 const TableRecord& rec = row.get(0);
183 ROArrayColumn<Float> specCol(itable, "SPECTRA");
184 uInt nchan = specCol(0).nelements();
185 Double cdelt,crval,crpix, restfreq;
186 Float focusAxi, focusTan, focusRot,
187 temperature, pressure, humidity, windSpeed, windAz;
188 Float tmp0,tmp1,tmp2,tmp3,tmp4;
189 Vector<Float> tcalval;
190 String stmp0,stmp1, tcalt;
191 in->frequencies().getEntry(crpix,crval,cdelt, rec.asuInt("FREQ_ID"));
192 in->focus().getEntry(focusAxi, focusTan, focusRot,
193 tmp0,tmp1,tmp2,tmp3,tmp4,
194 rec.asuInt("FOCUS_ID"));
195 in->molecules().getEntry(restfreq,stmp0,stmp1,rec.asuInt("MOLECULE_ID"));
196 in->tcal().getEntry(tcalt,tcalval,rec.asuInt("TCAL_ID"));
197 in->weather().getEntry(temperature, pressure, humidity,
198 windSpeed, windAz,
199 rec.asuInt("WEATHER_ID"));
200 Double pixel = Double(nchan/2);
201 Double refFreqNew = (pixel-crpix)*cdelt + crval;
202 // ok, now we have nrows for the n polarizations in this table
203 Matrix<Float> specs;
204 Matrix<uChar> flags;
205 Vector<Complex> xpol;
206 polConversion(specs, flags, xpol, itable);
207 Vector<Float> tsys = tsysFromTable(itable);
208 // dummy data
209 uInt npol = specs.ncolumn();
210
211 Matrix<Float> baseLin(npol,2, 0.0f);
212 Matrix<Float> baseSub(npol,9, 0.0f);
213 Complex xCalFctr;
214 Vector<Double> scanRate(2, 0.0);
215 Vector<Float> sigma(npol, 0.0f);
216 Vector<Float> calFctr(npol, 0.0f);
217 status = writer_->write(scanno, cycno, rec.asDouble("TIME"),
218 rec.asDouble("INTERVAL"),
219 rec.asString("FIELDNAME"),
220 rec.asString("SRCNAME"),
221 direction,
222 srcPM, srcVel, // not in scantable yet
223 ifno,
224 refFreqNew, nchan*abs(cdelt), cdelt,
225 restfreq,
226 tcal,
227 tcalt,
228 rec.asFloat("AZIMUTH"),
229 rec.asFloat("ELEVATION"),
230 rec.asFloat("PARANGLE"),
231 focusAxi, focusTan, focusRot,
232 temperature,
233 pressure, humidity, windSpeed, windAz,
234 rec.asInt("REFBEAMNO")+1, beamno,
235 direction,
236 scanRate,// not in scantable
237 tsys,
238 sigma, calFctr,// not in scantable
239 baseLin, baseSub,// not in scantable
240 specs, flags,
241 xCalFctr,//
242 xpol);
243 if ( status ) {
244 writer_->close();
245 throw(AipsError("STWriter: Failed to export Scantable."));
246 }
247
248 ++ifno;
249 ++ifit;
250 }
251 ++cycno;
252 ++cycit;
253 }
254 ++beamno;
255 ++beamit;
256 }
257 ++scanno;
258 ++scanit;
259 }
260 ostringstream oss;
261 oss << "STWriter: wrote " << count << " rows to " << filename << endl;
262 pushLog(String(oss));
263 writer_->close();
264
265 return 0;
266}
267
268Vector<Float> STWriter::tsysFromTable(const Table& tab)
269{
270 ROArrayColumn<Float> tsysCol(tab, "TSYS");
271 Vector<Float> out(tab.nrow());
272 Vector<Float> tmp;
273 for (uInt i=0; i<tab.nrow(); ++i) {
274 tmp.resize();
275 tmp = tsysCol(i);
276 out[i] = tmp[0];
277 }
278 return out;
279}
280
281void STWriter::polConversion( Matrix< Float >& specs, Matrix< uChar >& flags,
282 Vector< Complex > & xpol, const Table & tab )
283{
284 String poltype = tab.keywordSet().asString("POLTYPE");
285 if ( poltype != "linear") {
286 String msg = "poltype = " + poltype + " not yet supported in output.";
287 throw(AipsError(msg));
288 }
289 ROArrayColumn<Float> specCol(tab, "SPECTRA");
290 ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
291 uInt nchan = specCol(0).nelements();
292 uInt ncol = (tab.nrow()==1 ? 1: 2 );
293 specs.resize(nchan, ncol);
294 flags.resize(nchan, ncol);
295 // the linears
296 for (uInt i=0; i<ncol; ++i) {
297 specs.column(i) = specCol(i);
298 flags.column(i) = flagCol(i);
299 }
300 // now the complex if exists
301 Bool hasxpol = False;
302 xpol.resize();
303 if ( tab.nrow() == 4 ) {
304 hasxpol = True;
305 xpol.resize(nchan);
306 Vector<Float> reals, imags;
307 reals = specCol(2); imags = specCol(3);
308 for (uInt k=0; k < nchan; ++k) {
309 xpol[k] = Complex(reals[k], imags[k]);
310 }
311 }
312}
313
314
315}
Note: See TracBrowser for help on using the repository browser.