source: trunk/src/STMath.cpp@ 2899

Last change on this file since 2899 was 2899, checked in by Takeshi Nakazato, 12 years ago

New Development: No

JIRA Issue: Yes CAS-5875

Ready for Test: Yes

Interface Changes: No

What Interface Changed: Please list interface changes

Test Programs: test_sdcoadd

Put in Release Notes: No

Module(s): Module Names change impacts.

Description: Describe your changes here...

sdcoadd (sd.merge):
Fixed a bug that input scantable may be unexpectedly modified.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 164.0 KB
Line 
1//
2// C++ Implementation: STMath
3//
4// Description:
5//
6//
7// Author: Malte Marquarding <asap@atnf.csiro.au>, (C) 2006
8//
9// Copyright: See COPYING file that comes with this distribution
10//
11//
12
13#include <sstream>
14
15#include <casa/iomanip.h>
16#include <casa/Arrays/MaskArrLogi.h>
17#include <casa/Arrays/MaskArrMath.h>
18#include <casa/Arrays/ArrayLogical.h>
19#include <casa/Arrays/ArrayMath.h>
20#include <casa/Arrays/Slice.h>
21#include <casa/Arrays/Slicer.h>
22#include <casa/BasicSL/String.h>
23#include <casa/Containers/Block.h>
24#include <casa/Containers/RecordField.h>
25#include <casa/Exceptions/Error.h>
26#include <casa/Logging/LogIO.h>
27#include <casa/Quanta/Quantum.h>
28
29#include <coordinates/Coordinates/CoordinateSystem.h>
30#include <coordinates/Coordinates/CoordinateUtil.h>
31#include <coordinates/Coordinates/FrequencyAligner.h>
32#include <coordinates/Coordinates/SpectralCoordinate.h>
33
34#include <lattices/Lattices/LatticeUtilities.h>
35
36#include <scimath/Functionals/Polynomial.h>
37#include <scimath/Mathematics/Convolver.h>
38#include <scimath/Mathematics/VectorKernel.h>
39
40#include <tables/Tables/ExprNode.h>
41#include <tables/Tables/ReadAsciiTable.h>
42#include <tables/Tables/TableCopy.h>
43#include <tables/Tables/TableIter.h>
44#include <tables/Tables/TableParse.h>
45#include <tables/Tables/TableRecord.h>
46#include <tables/Tables/TableRow.h>
47#include <tables/Tables/TableVector.h>
48#include <tables/Tables/TabVecMath.h>
49
50#include <atnf/PKSIO/SrcType.h>
51
52#include "RowAccumulator.h"
53#include "STAttr.h"
54#include "STMath.h"
55#include "STSelector.h"
56#include "Accelerator.h"
57#include "STIdxIter.h"
58
59using namespace casa;
60using namespace asap;
61
62// 2012/02/17 TN
63// Since STGrid is implemented, average doesn't consider direction
64// when accumulating
65// tolerance for direction comparison (rad)
66// #define TOL_OTF 1.0e-15
67// #define TOL_POINT 2.9088821e-4 // 1 arcmin
68
69STMath::STMath(bool insitu) :
70 insitu_(insitu)
71{
72}
73
74
75STMath::~STMath()
76{
77}
78
79CountedPtr<Scantable>
80STMath::average( const std::vector<CountedPtr<Scantable> >& in,
81 const std::vector<bool>& mask,
82 const std::string& weight,
83 const std::string& avmode)
84{
85// double t0, t1 ;
86// t0 = mathutil::gettimeofday_sec() ;
87
88 LogIO os( LogOrigin( "STMath", "average()", WHERE ) ) ;
89 if ( avmode == "SCAN" && in.size() != 1 )
90 throw(AipsError("Can't perform 'SCAN' averaging on multiple tables.\n"
91 "Use merge first."));
92 WeightType wtype = stringToWeight(weight);
93
94 // 2012/02/17 TN
95 // Since STGrid is implemented, average doesn't consider direction
96 // when accumulating
97 // check if OTF observation
98// String obstype = in[0]->getHeader().obstype ;
99// Double tol = 0.0 ;
100// if ( (obstype.find( "OTF" ) != String::npos) || (obstype.find( "OBSERVE_TARGET" ) != String::npos) ) {
101// tol = TOL_OTF ;
102// }
103// else {
104// tol = TOL_POINT ;
105// }
106
107 // output
108 // clone as this is non insitu
109 bool insitu = insitu_;
110 setInsitu(false);
111 CountedPtr< Scantable > out = getScantable(in[0], true);
112 setInsitu(insitu);
113 std::vector<CountedPtr<Scantable> >::const_iterator stit = in.begin();
114 ++stit;
115 while ( stit != in.end() ) {
116 out->appendToHistoryTable((*stit)->history());
117 ++stit;
118 }
119
120 Table& tout = out->table();
121
122 /// @todo check if all scantables are conformant
123
124 ArrayColumn<Float> specColOut(tout,"SPECTRA");
125 ArrayColumn<uChar> flagColOut(tout,"FLAGTRA");
126 ArrayColumn<Float> tsysColOut(tout,"TSYS");
127 ScalarColumn<Double> mjdColOut(tout,"TIME");
128 ScalarColumn<Double> intColOut(tout,"INTERVAL");
129 ScalarColumn<uInt> cycColOut(tout,"CYCLENO");
130 ScalarColumn<uInt> scanColOut(tout,"SCANNO");
131 ScalarColumn<uInt> flagRowColOut(tout,"FLAGROW");
132
133 // set up the output table rows. These are based on the structure of the
134 // FIRST scantable in the vector
135 const Table& baset = in[0]->table();
136
137 RowAccumulator acc(wtype);
138 Vector<Bool> cmask(mask);
139 acc.setUserMask(cmask);
140// ROTableRow row(tout);
141 ROArrayColumn<Float> specCol, tsysCol;
142 ROArrayColumn<uChar> flagCol;
143 ROScalarColumn<Double> mjdCol, intCol;
144 ROScalarColumn<Int> scanIDCol;
145 ROScalarColumn<uInt> flagRowCol;
146
147 //Vector<uInt> rowstodelete;
148 Block<uInt> rowstodelB( in[0]->nrow() ) ;
149 uInt nrowdel = 0 ;
150
151// Block<String> cols(3);
152 vector<string> cols(3) ;
153 cols[0] = String("BEAMNO");
154 cols[1] = String("IFNO");
155 cols[2] = String("POLNO");
156 if ( avmode == "SOURCE" ) {
157 cols.resize(4);
158 cols[3] = String("SRCNAME");
159 }
160 if ( avmode == "SCAN" && in.size() == 1) {
161 //cols.resize(4);
162 //cols[3] = String("SCANNO");
163 cols.resize(5);
164 cols[3] = String("SRCNAME");
165 cols[4] = String("SCANNO");
166 }
167 uInt outrowCount = 0;
168 // use STIdxIterExAcc instead of TableIterator
169 STIdxIterExAcc iter( in[0], cols ) ;
170// double t2 = 0 ;
171// double t3 = 0 ;
172// double t4 = 0 ;
173// double t5 = 0 ;
174// TableIterator iter(baset, cols);
175// int count = 0 ;
176 while (!iter.pastEnd()) {
177 Vector<uInt> rows = iter.getRows( SHARE ) ;
178 if ( rows.nelements() == 0 ) {
179 iter.next() ;
180 continue ;
181 }
182 Vector<uInt> current = iter.current() ;
183 String srcname = iter.getSrcName() ;
184 //Table subt = iter.table();
185 // copy the first row of this selection into the new table
186 tout.addRow();
187// t4 = mathutil::gettimeofday_sec() ;
188 // skip to copy SPECTRA, FLAGTRA, and TSYS since those heavy columns are
189 // overwritten in the following process
190 copyRows( tout, baset, outrowCount, rows[0], 1, False, False, False ) ;
191// t5 += mathutil::gettimeofday_sec() - t4 ;
192 // re-index to 0
193 if ( avmode != "SCAN" && avmode != "SOURCE" ) {
194 scanColOut.put(outrowCount, uInt(0));
195 }
196
197 // 2012/02/17 TN
198 // Since STGrid is implemented, average doesn't consider direction
199 // when accumulating
200// MDirection::ScalarColumn dircol ;
201// dircol.attach( subt, "DIRECTION" ) ;
202// Int length = subt.nrow() ;
203// vector< Vector<Double> > dirs ;
204// vector<int> indexes ;
205// for ( Int i = 0 ; i < length ; i++ ) {
206// Vector<Double> t = dircol(i).getAngle(Unit(String("rad"))).getValue() ;
207// //os << << count++ << ": " ;
208// //os << "[" << t[0] << "," << t[1] << "]" << LogIO::POST ;
209// bool adddir = true ;
210// for ( uInt j = 0 ; j < dirs.size() ; j++ ) {
211// //if ( allTrue( t == dirs[j] ) ) {
212// Double dx = t[0] - dirs[j][0] ;
213// Double dy = t[1] - dirs[j][1] ;
214// Double dd = sqrt( dx * dx + dy * dy ) ;
215// //if ( allNearAbs( t, dirs[j], tol ) ) {
216// if ( dd <= tol ) {
217// adddir = false ;
218// break ;
219// }
220// }
221// if ( adddir ) {
222// dirs.push_back( t ) ;
223// indexes.push_back( i ) ;
224// }
225// }
226// uInt rowNum = dirs.size() ;
227// tout.addRow( rowNum ) ;
228// for ( uInt i = 0 ; i < rowNum ; i++ ) {
229// TableCopy::copyRows( tout, subt, outrowCount+i, indexes[i], 1 ) ;
230// // re-index to 0
231// if ( avmode != "SCAN" && avmode != "SOURCE" ) {
232// scanColOut.put(outrowCount+i, uInt(0));
233// }
234// }
235// outrowCount += rowNum ;
236
237 // merge loop
238 uInt i = outrowCount ;
239 // in[0] is already selected by iterator
240 specCol.attach(baset,"SPECTRA");
241 flagCol.attach(baset,"FLAGTRA");
242 tsysCol.attach(baset,"TSYS");
243 intCol.attach(baset,"INTERVAL");
244 mjdCol.attach(baset,"TIME");
245 flagRowCol.attach(baset,"FLAGROW");
246 Vector<Float> spec,tsys;
247 Vector<uChar> flag;
248 Double inter,time;
249 uInt flagRow;
250
251 for (uInt l = 0; l < rows.nelements(); ++l ) {
252 uInt k = rows[l] ;
253 flagCol.get(k, flag);
254 Vector<Bool> bflag(flag.shape());
255 flagRowCol.get(k, flagRow);
256 if (flagRow > 0)
257 bflag = true;
258 else
259 convertArray(bflag, flag);
260 /*
261 if ( allEQ(bflag, True) ) {
262 continue;//don't accumulate
263 }
264 */
265 specCol.get(k, spec);
266 tsysCol.get(k, tsys);
267 intCol.get(k, inter);
268 mjdCol.get(k, time);
269 // spectrum has to be added last to enable weighting by the other values
270// t2 = mathutil::gettimeofday_sec() ;
271 acc.add(spec, !bflag, tsys, inter, time);
272// t3 += mathutil::gettimeofday_sec() - t2 ;
273
274 }
275
276
277 // in[0] is already selected by TableIterator so that index is
278 // started from 1
279 for ( int j=1; j < int(in.size()); ++j ) {
280 const Table& tin = in[j]->table();
281 //const TableRecord& rec = row.get(i);
282 ROScalarColumn<Double> tmp(tin, "TIME");
283 Double td;tmp.get(0,td);
284
285#if 1
286 static char const*const colNames1[] = { "IFNO", "BEAMNO", "POLNO" };
287 //uInt const values1[] = { rec.asuInt("IFNO"), rec.asuInt("BEAMNO"), rec.asuInt("POLNO") };
288 uInt const values1[] = { current[1], current[0], current[2] };
289 SingleTypeEqPredicate<uInt, 3> myPred(tin, colNames1, values1);
290 CustomTableExprNodeRep myNodeRep(tin, myPred);
291 myNodeRep.link(); // to avoid automatic delete when myExpr is destructed.
292 CustomTableExprNode myExpr(myNodeRep);
293 Table basesubt = tin(myExpr);
294#else
295// Table basesubt = tin( tin.col("BEAMNO") == Int(rec.asuInt("BEAMNO"))
296// && tin.col("IFNO") == Int(rec.asuInt("IFNO"))
297// && tin.col("POLNO") == Int(rec.asuInt("POLNO")) );
298 Table basesubt = tin( tin.col("BEAMNO") == current[0]
299 && tin.col("IFNO") == current[1]
300 && tin.col("POLNO") == current[2] );
301#endif
302 Table subt;
303 if ( avmode == "SOURCE") {
304// subt = basesubt( basesubt.col("SRCNAME") == rec.asString("SRCNAME"));
305 subt = basesubt( basesubt.col("SRCNAME") == srcname );
306
307 } else if (avmode == "SCAN") {
308// subt = basesubt( basesubt.col("SRCNAME") == rec.asString("SRCNAME")
309// && basesubt.col("SCANNO") == Int(rec.asuInt("SCANNO")) );
310 subt = basesubt( basesubt.col("SRCNAME") == srcname
311 && basesubt.col("SCANNO") == current[4] );
312 } else {
313 subt = basesubt;
314 }
315
316 // 2012/02/17 TN
317 // Since STGrid is implemented, average doesn't consider direction
318 // when accumulating
319// vector<uInt> removeRows ;
320// uInt nrsubt = subt.nrow() ;
321// for ( uInt irow = 0 ; irow < nrsubt ; irow++ ) {
322// //if ( !allTrue((subt.col("DIRECTION").getArrayDouble(TableExprId(irow)))==rec.asArrayDouble("DIRECTION")) ) {
323// Vector<Double> x0 = (subt.col("DIRECTION").getArrayDouble(TableExprId(irow))) ;
324// Vector<Double> x1 = rec.asArrayDouble("DIRECTION") ;
325// double dx = x0[0] - x1[0];
326// double dy = x0[1] - x1[1];
327// Double dd = sqrt( dx * dx + dy * dy ) ;
328// //if ( !allNearAbs((subt.col("DIRECTION").getArrayDouble(TableExprId(irow))), rec.asArrayDouble("DIRECTION"), tol ) ) {
329// if ( dd > tol ) {
330// removeRows.push_back( irow ) ;
331// }
332// }
333// if ( removeRows.size() != 0 ) {
334// subt.removeRow( removeRows ) ;
335// }
336
337// if ( nrsubt == removeRows.size() )
338// throw(AipsError("Averaging data is empty.")) ;
339
340 specCol.attach(subt,"SPECTRA");
341 flagCol.attach(subt,"FLAGTRA");
342 tsysCol.attach(subt,"TSYS");
343 intCol.attach(subt,"INTERVAL");
344 mjdCol.attach(subt,"TIME");
345 flagRowCol.attach(subt,"FLAGROW");
346 for (uInt k = 0; k < subt.nrow(); ++k ) {
347 flagCol.get(k, flag);
348 Vector<Bool> bflag(flag.shape());
349 flagRowCol.get(k, flagRow);
350 if (flagRow > 0)
351 bflag = true;
352 else
353 convertArray(bflag, flag);
354 /*
355 if ( allEQ(bflag, True) ) {
356 continue;//don't accumulate
357 }
358 */
359 specCol.get(k, spec);
360 //tsysCol.get(k, tsys);
361 tsys.assign( tsysCol(k) );
362 intCol.get(k, inter);
363 mjdCol.get(k, time);
364 // spectrum has to be added last to enable weighting by the other values
365// t2 = mathutil::gettimeofday_sec() ;
366 acc.add(spec, !bflag, tsys, inter, time);
367// t3 += mathutil::gettimeofday_sec() - t2 ;
368 }
369
370 }
371 const Vector<Bool>& msk = acc.getMask();
372 if ( allEQ(msk, False) ) {
373 rowstodelB[nrowdel] = i ;
374 nrowdel++ ;
375 continue;
376 }
377 //write out
378 if (acc.state()) {
379 // If there exists a channel at which all the input spectra are masked,
380 // spec has 'nan' values for that channel and it may affect the following
381 // processes. To avoid this, replacing 'nan' values in spec with
382 // weighted-mean of all spectra in the following line.
383 // (done for CAS-2776, 2011/04/07 by Wataru Kawasaki)
384 acc.replaceNaN();
385
386 Vector<uChar> flg(msk.shape());
387 convertArray(flg, !msk);
388 for (uInt k = 0; k < flg.nelements(); ++k) {
389 uChar userFlag = 1 << 7;
390 if (msk[k]==True) userFlag = 0 << 7;
391 flg(k) = userFlag;
392 }
393
394 flagColOut.put(i, flg);
395 specColOut.put(i, acc.getSpectrum());
396 tsysColOut.put(i, acc.getTsys());
397 intColOut.put(i, acc.getInterval());
398 mjdColOut.put(i, acc.getTime());
399 // we should only have one cycle now -> reset it to be 0
400 // frequency switched data has different CYCLENO for different IFNO
401 // which requires resetting this value
402 cycColOut.put(i, uInt(0));
403 // completely flagged rows are removed anyway
404 flagRowColOut.put(i, uInt(0));
405 } else {
406 os << "For output row="<<i<<", all input rows of data are flagged. no averaging" << LogIO::POST;
407 }
408 acc.reset();
409
410 // merge with while loop for preparing out table
411 ++outrowCount;
412// ++iter ;
413 iter.next() ;
414 }
415
416 if ( nrowdel > 0 ) {
417 Vector<uInt> rowstodelete( IPosition(1,nrowdel), rowstodelB.storage(), SHARE ) ;
418 os << rowstodelete << LogIO::POST ;
419 tout.removeRow(rowstodelete);
420 if (tout.nrow() == 0) {
421 throw(AipsError("Can't average fully flagged data."));
422 }
423 }
424
425// t1 = mathutil::gettimeofday_sec() ;
426// cout << "elapsed time for average(): " << t1-t0 << " sec" << endl ;
427// cout << " elapsed time for acc.add(): " << t3 << " sec" << endl ;
428// cout << " elapsed time for copyRows(): " << t5 << " sec" << endl ;
429
430 return out;
431}
432
433CountedPtr< Scantable >
434STMath::averageChannel( const CountedPtr < Scantable > & in,
435 const std::string & mode,
436 const std::string& avmode )
437{
438 (void) mode; // currently unused
439 // 2012/02/17 TN
440 // Since STGrid is implemented, average doesn't consider direction
441 // when accumulating
442 // check if OTF observation
443// String obstype = in->getHeader().obstype ;
444// Double tol = 0.0 ;
445// if ( obstype.find( "OTF" ) != String::npos ) {
446// tol = TOL_OTF ;
447// }
448// else {
449// tol = TOL_POINT ;
450// }
451
452 // clone as this is non insitu
453 bool insitu = insitu_;
454 setInsitu(false);
455 CountedPtr< Scantable > out = getScantable(in, true);
456 setInsitu(insitu);
457 Table& tout = out->table();
458 ArrayColumn<Float> specColOut(tout,"SPECTRA");
459 ArrayColumn<uChar> flagColOut(tout,"FLAGTRA");
460 ArrayColumn<Float> tsysColOut(tout,"TSYS");
461 ScalarColumn<uInt> scanColOut(tout,"SCANNO");
462 ScalarColumn<Double> intColOut(tout, "INTERVAL");
463 Table tmp = in->table().sort("BEAMNO");
464 Block<String> cols(3);
465 cols[0] = String("BEAMNO");
466 cols[1] = String("IFNO");
467 cols[2] = String("POLNO");
468 if ( avmode == "SCAN") {
469 cols.resize(4);
470 cols[3] = String("SCANNO");
471 }
472 uInt outrowCount = 0;
473 uChar userflag = 1 << 7;
474 TableIterator iter(tmp, cols);
475 while (!iter.pastEnd()) {
476 Table subt = iter.table();
477 ROArrayColumn<Float> specCol, tsysCol;
478 ROArrayColumn<uChar> flagCol;
479 ROScalarColumn<Double> intCol(subt, "INTERVAL");
480 specCol.attach(subt,"SPECTRA");
481 flagCol.attach(subt,"FLAGTRA");
482 tsysCol.attach(subt,"TSYS");
483
484 tout.addRow();
485 TableCopy::copyRows(tout, subt, outrowCount, 0, 1);
486 if ( avmode != "SCAN") {
487 scanColOut.put(outrowCount, uInt(0));
488 }
489 Vector<Float> tmp;
490 specCol.get(0, tmp);
491 uInt nchan = tmp.nelements();
492 // have to do channel by channel here as MaskedArrMath
493 // doesn't have partialMedians
494 Vector<uChar> flags = flagCol.getColumn(Slicer(Slice(0)));
495 Vector<Float> outspec(nchan);
496 Vector<uChar> outflag(nchan,0);
497 Vector<Float> outtsys(1);/// @fixme when tsys is channel based
498 for (uInt i=0; i<nchan; ++i) {
499 Vector<Float> specs = specCol.getColumn(Slicer(Slice(i)));
500 MaskedArray<Float> ma = maskedArray(specs,flags);
501 outspec[i] = median(ma);
502 if ( allEQ(ma.getMask(), False) )
503 outflag[i] = userflag;// flag data
504 }
505 outtsys[0] = median(tsysCol.getColumn());
506 specColOut.put(outrowCount, outspec);
507 flagColOut.put(outrowCount, outflag);
508 tsysColOut.put(outrowCount, outtsys);
509 Double intsum = sum(intCol.getColumn());
510 intColOut.put(outrowCount, intsum);
511 ++outrowCount;
512 ++iter;
513
514 // 2012/02/17 TN
515 // Since STGrid is implemented, average doesn't consider direction
516 // when accumulating
517// MDirection::ScalarColumn dircol ;
518// dircol.attach( subt, "DIRECTION" ) ;
519// Int length = subt.nrow() ;
520// vector< Vector<Double> > dirs ;
521// vector<int> indexes ;
522// // Handle MX mode averaging
523// if (in->nbeam() > 1 ) {
524// length = 1;
525// }
526// for ( Int i = 0 ; i < length ; i++ ) {
527// Vector<Double> t = dircol(i).getAngle(Unit(String("rad"))).getValue() ;
528// bool adddir = true ;
529// for ( uInt j = 0 ; j < dirs.size() ; j++ ) {
530// //if ( allTrue( t == dirs[j] ) ) {
531// Double dx = t[0] - dirs[j][0] ;
532// Double dy = t[1] - dirs[j][1] ;
533// Double dd = sqrt( dx * dx + dy * dy ) ;
534// //if ( allNearAbs( t, dirs[j], tol ) ) {
535// if ( dd <= tol ) {
536// adddir = false ;
537// break ;
538// }
539// }
540// if ( adddir ) {
541// dirs.push_back( t ) ;
542// indexes.push_back( i ) ;
543// }
544// }
545// uInt rowNum = dirs.size() ;
546// tout.addRow( rowNum );
547// for ( uInt i = 0 ; i < rowNum ; i++ ) {
548// TableCopy::copyRows(tout, subt, outrowCount+i, indexes[i], 1) ;
549// // Handle MX mode averaging
550// if ( avmode != "SCAN") {
551// scanColOut.put(outrowCount+i, uInt(0));
552// }
553// }
554// MDirection::ScalarColumn dircolOut ;
555// dircolOut.attach( tout, "DIRECTION" ) ;
556// for ( uInt irow = 0 ; irow < rowNum ; irow++ ) {
557// Vector<Double> t = \
558// dircolOut(outrowCount+irow).getAngle(Unit(String("rad"))).getValue() ;
559// Vector<Float> tmp;
560// specCol.get(0, tmp);
561// uInt nchan = tmp.nelements();
562// // have to do channel by channel here as MaskedArrMath
563// // doesn't have partialMedians
564// Vector<uChar> flags = flagCol.getColumn(Slicer(Slice(0)));
565// // mask spectra for different DIRECTION
566// for ( uInt jrow = 0 ; jrow < subt.nrow() ; jrow++ ) {
567// Vector<Double> direction = \
568// dircol(jrow).getAngle(Unit(String("rad"))).getValue() ;
569// //if ( t[0] != direction[0] || t[1] != direction[1] ) {
570// Double dx = t[0] - direction[0];
571// Double dy = t[1] - direction[1];
572// Double dd = sqrt(dx*dx + dy*dy);
573// //if ( !allNearAbs( t, direction, tol ) ) {
574// if ( dd > tol && in->nbeam() < 2 ) {
575// flags[jrow] = userflag ;
576// }
577// }
578// Vector<Float> outspec(nchan);
579// Vector<uChar> outflag(nchan,0);
580// Vector<Float> outtsys(1);/// @fixme when tsys is channel based
581// for (uInt i=0; i<nchan; ++i) {
582// Vector<Float> specs = specCol.getColumn(Slicer(Slice(i)));
583// MaskedArray<Float> ma = maskedArray(specs,flags);
584// outspec[i] = median(ma);
585// if ( allEQ(ma.getMask(), False) )
586// outflag[i] = userflag;// flag data
587// }
588// outtsys[0] = median(tsysCol.getColumn());
589// specColOut.put(outrowCount+irow, outspec);
590// flagColOut.put(outrowCount+irow, outflag);
591// tsysColOut.put(outrowCount+irow, outtsys);
592// Vector<Double> integ = intCol.getColumn() ;
593// MaskedArray<Double> mi = maskedArray( integ, flags ) ;
594// Double intsum = sum(mi);
595// intColOut.put(outrowCount+irow, intsum);
596// }
597// outrowCount += rowNum ;
598// ++iter;
599 }
600 return out;
601}
602
603CountedPtr< Scantable > STMath::getScantable(const CountedPtr< Scantable >& in,
604 bool droprows)
605{
606 if (insitu_) {
607 return in;
608 }
609 else {
610 // clone
611 return CountedPtr<Scantable>(new Scantable(*in, Bool(droprows)));
612 }
613}
614
615CountedPtr< Scantable > STMath::unaryOperate( const CountedPtr< Scantable >& in,
616 float val,
617 const std::string& mode,
618 bool tsys )
619{
620 CountedPtr< Scantable > out = getScantable(in, false);
621 Table& tab = out->table();
622 ArrayColumn<Float> specCol(tab,"SPECTRA");
623 ArrayColumn<Float> tsysCol(tab,"TSYS");
624 if (mode=="DIV") val = 1.0/val ;
625 else if (mode=="SUB") val *= -1.0 ;
626 for (uInt i=0; i<tab.nrow(); ++i) {
627 Vector<Float> spec;
628 Vector<Float> ts;
629 specCol.get(i, spec);
630 tsysCol.get(i, ts);
631 if (mode == "MUL" || mode == "DIV") {
632 //if (mode == "DIV") val = 1.0/val;
633 spec *= val;
634 specCol.put(i, spec);
635 if ( tsys ) {
636 ts *= val;
637 tsysCol.put(i, ts);
638 }
639 } else if ( mode == "ADD" || mode == "SUB") {
640 //if (mode == "SUB") val *= -1.0;
641 spec += val;
642 specCol.put(i, spec);
643 if ( tsys ) {
644 ts += val;
645 tsysCol.put(i, ts);
646 }
647 }
648 }
649 return out;
650}
651
652CountedPtr< Scantable > STMath::arrayOperate( const CountedPtr< Scantable >& in,
653 const std::vector<float> val,
654 const std::string& mode,
655 const std::string& opmode,
656 bool tsys )
657{
658 CountedPtr< Scantable > out ;
659 if ( opmode == "channel" ) {
660 out = arrayOperateChannel( in, val, mode, tsys ) ;
661 }
662 else if ( opmode == "row" ) {
663 out = arrayOperateRow( in, val, mode, tsys ) ;
664 }
665 else {
666 throw( AipsError( "Unknown array operation mode." ) ) ;
667 }
668 return out ;
669}
670
671CountedPtr< Scantable > STMath::arrayOperateChannel( const CountedPtr< Scantable >& in,
672 const std::vector<float> val,
673 const std::string& mode,
674 bool tsys )
675{
676 if ( val.size() == 1 ){
677 return unaryOperate( in, val[0], mode, tsys ) ;
678 }
679
680 // conformity of SPECTRA and TSYS
681 if ( tsys ) {
682 TableIterator titer(in->table(), "IFNO");
683 while ( !titer.pastEnd() ) {
684 ArrayColumn<Float> specCol( in->table(), "SPECTRA" ) ;
685 ArrayColumn<Float> tsysCol( in->table(), "TSYS" ) ;
686 Array<Float> spec = specCol.getColumn() ;
687 Array<Float> ts = tsysCol.getColumn() ;
688 if ( !spec.conform( ts ) ) {
689 throw( AipsError( "SPECTRA and TSYS must conform in shape if you want to apply operation on Tsys." ) ) ;
690 }
691 titer.next() ;
692 }
693 }
694
695 // check if all spectra in the scantable have the same number of channel
696 vector<uInt> nchans;
697 vector<uInt> ifnos = in->getIFNos() ;
698 for ( uInt i = 0 ; i < ifnos.size() ; i++ ) {
699 nchans.push_back( in->nchan( ifnos[i] ) ) ;
700 }
701 Vector<uInt> mchans( nchans ) ;
702 if ( anyNE( mchans, mchans[0] ) ) {
703 throw( AipsError("All spectra in the input scantable must have the same number of channel for vector operation." ) ) ;
704 }
705
706 // check if vector size is equal to nchan
707 Vector<Float> fact( val ) ;
708 if ( fact.nelements() != mchans[0] ) {
709 throw( AipsError("Vector size must be 1 or be same as number of channel.") ) ;
710 }
711
712 // check divided by zero
713 if ( ( mode == "DIV" ) && anyEQ( fact, (float)0.0 ) ) {
714 throw( AipsError("Divided by zero is not recommended." ) ) ;
715 }
716
717 CountedPtr< Scantable > out = getScantable(in, false);
718 Table& tab = out->table();
719 ArrayColumn<Float> specCol(tab,"SPECTRA");
720 ArrayColumn<Float> tsysCol(tab,"TSYS");
721 if (mode == "DIV") fact = (float)1.0 / fact;
722 else if (mode == "SUB") fact *= (float)-1.0 ;
723 for (uInt i=0; i<tab.nrow(); ++i) {
724 Vector<Float> spec;
725 Vector<Float> ts;
726 specCol.get(i, spec);
727 tsysCol.get(i, ts);
728 if (mode == "MUL" || mode == "DIV") {
729 //if (mode == "DIV") fact = (float)1.0 / fact;
730 spec *= fact;
731 specCol.put(i, spec);
732 if ( tsys ) {
733 ts *= fact;
734 tsysCol.put(i, ts);
735 }
736 } else if ( mode == "ADD" || mode == "SUB") {
737 //if (mode == "SUB") fact *= (float)-1.0 ;
738 spec += fact;
739 specCol.put(i, spec);
740 if ( tsys ) {
741 ts += fact;
742 tsysCol.put(i, ts);
743 }
744 }
745 }
746 return out;
747}
748
749CountedPtr< Scantable > STMath::arrayOperateRow( const CountedPtr< Scantable >& in,
750 const std::vector<float> val,
751 const std::string& mode,
752 bool tsys )
753{
754 if ( val.size() == 1 ) {
755 return unaryOperate( in, val[0], mode, tsys ) ;
756 }
757
758 // conformity of SPECTRA and TSYS
759 if ( tsys ) {
760 TableIterator titer(in->table(), "IFNO");
761 while ( !titer.pastEnd() ) {
762 ArrayColumn<Float> specCol( in->table(), "SPECTRA" ) ;
763 ArrayColumn<Float> tsysCol( in->table(), "TSYS" ) ;
764 Array<Float> spec = specCol.getColumn() ;
765 Array<Float> ts = tsysCol.getColumn() ;
766 if ( !spec.conform( ts ) ) {
767 throw( AipsError( "SPECTRA and TSYS must conform in shape if you want to apply operation on Tsys." ) ) ;
768 }
769 titer.next() ;
770 }
771 }
772
773 // check if vector size is equal to nrow
774 Vector<Float> fact( val ) ;
775 if (fact.nelements() != uInt(in->nrow())) {
776 throw( AipsError("Vector size must be 1 or be same as number of row.") ) ;
777 }
778
779 // check divided by zero
780 if ( ( mode == "DIV" ) && anyEQ( fact, (float)0.0 ) ) {
781 throw( AipsError("Divided by zero is not recommended." ) ) ;
782 }
783
784 CountedPtr< Scantable > out = getScantable(in, false);
785 Table& tab = out->table();
786 ArrayColumn<Float> specCol(tab,"SPECTRA");
787 ArrayColumn<Float> tsysCol(tab,"TSYS");
788 if (mode == "DIV") fact = (float)1.0 / fact;
789 if (mode == "SUB") fact *= (float)-1.0 ;
790 for (uInt i=0; i<tab.nrow(); ++i) {
791 Vector<Float> spec;
792 Vector<Float> ts;
793 specCol.get(i, spec);
794 tsysCol.get(i, ts);
795 if (mode == "MUL" || mode == "DIV") {
796 spec *= fact[i];
797 specCol.put(i, spec);
798 if ( tsys ) {
799 ts *= fact[i];
800 tsysCol.put(i, ts);
801 }
802 } else if ( mode == "ADD" || mode == "SUB") {
803 spec += fact[i];
804 specCol.put(i, spec);
805 if ( tsys ) {
806 ts += fact[i];
807 tsysCol.put(i, ts);
808 }
809 }
810 }
811 return out;
812}
813
814CountedPtr< Scantable > STMath::array2dOperate( const CountedPtr< Scantable >& in,
815 const std::vector< std::vector<float> > val,
816 const std::string& mode,
817 bool tsys )
818{
819 // conformity of SPECTRA and TSYS
820 if ( tsys ) {
821 TableIterator titer(in->table(), "IFNO");
822 while ( !titer.pastEnd() ) {
823 ArrayColumn<Float> specCol( in->table(), "SPECTRA" ) ;
824 ArrayColumn<Float> tsysCol( in->table(), "TSYS" ) ;
825 Array<Float> spec = specCol.getColumn() ;
826 Array<Float> ts = tsysCol.getColumn() ;
827 if ( !spec.conform( ts ) ) {
828 throw( AipsError( "SPECTRA and TSYS must conform in shape if you want to apply operation on Tsys." ) ) ;
829 }
830 titer.next() ;
831 }
832 }
833
834 // some checks
835 vector<uInt> nchans;
836 for (Int i = 0 ; i < in->nrow() ; i++) {
837 nchans.push_back((in->getSpectrum(i)).size());
838 }
839 //Vector<uInt> mchans( nchans ) ;
840 vector< Vector<Float> > facts ;
841 for ( uInt i = 0 ; i < nchans.size() ; i++ ) {
842 Vector<Float> tmp( val[i] ) ;
843 // check divided by zero
844 if ( ( mode == "DIV" ) && anyEQ( tmp, (float)0.0 ) ) {
845 throw( AipsError("Divided by zero is not recommended." ) ) ;
846 }
847 // conformity check
848 if ( tmp.nelements() != nchans[i] ) {
849 stringstream ss ;
850 ss << "Row " << i << ": Vector size must be same as number of channel." ;
851 throw( AipsError( ss.str() ) ) ;
852 }
853 facts.push_back( tmp ) ;
854 }
855
856
857 CountedPtr< Scantable > out = getScantable(in, false);
858 Table& tab = out->table();
859 ArrayColumn<Float> specCol(tab,"SPECTRA");
860 ArrayColumn<Float> tsysCol(tab,"TSYS");
861 for (uInt i=0; i<tab.nrow(); ++i) {
862 Vector<Float> fact = facts[i] ;
863 Vector<Float> spec;
864 Vector<Float> ts;
865 specCol.get(i, spec);
866 tsysCol.get(i, ts);
867 if (mode == "MUL" || mode == "DIV") {
868 if (mode == "DIV") fact = (float)1.0 / fact;
869 spec *= fact;
870 specCol.put(i, spec);
871 if ( tsys ) {
872 ts *= fact;
873 tsysCol.put(i, ts);
874 }
875 } else if ( mode == "ADD" || mode == "SUB") {
876 if (mode == "SUB") fact *= (float)-1.0 ;
877 spec += fact;
878 specCol.put(i, spec);
879 if ( tsys ) {
880 ts += fact;
881 tsysCol.put(i, ts);
882 }
883 }
884 }
885 return out;
886}
887
888CountedPtr<Scantable> STMath::binaryOperate(const CountedPtr<Scantable>& left,
889 const CountedPtr<Scantable>& right,
890 const std::string& mode)
891{
892 bool insitu = insitu_;
893 if ( ! left->conformant(*right) ) {
894 throw(AipsError("'left' and 'right' scantables are not conformant."));
895 }
896 setInsitu(false);
897 CountedPtr< Scantable > out = getScantable(left, false);
898 setInsitu(insitu);
899 Table& tout = out->table();
900 Block<String> coln(5);
901 coln[0] = "SCANNO"; coln[1] = "CYCLENO"; coln[2] = "BEAMNO";
902 coln[3] = "IFNO"; coln[4] = "POLNO";
903 Table tmpl = tout.sort(coln);
904 Table tmpr = right->table().sort(coln);
905 ArrayColumn<Float> lspecCol(tmpl,"SPECTRA");
906 ROArrayColumn<Float> rspecCol(tmpr,"SPECTRA");
907 ArrayColumn<uChar> lflagCol(tmpl,"FLAGTRA");
908 ROArrayColumn<uChar> rflagCol(tmpr,"FLAGTRA");
909
910 for (uInt i=0; i<tout.nrow(); ++i) {
911 Vector<Float> lspecvec, rspecvec;
912 Vector<uChar> lflagvec, rflagvec;
913 lspecvec = lspecCol(i); rspecvec = rspecCol(i);
914 lflagvec = lflagCol(i); rflagvec = rflagCol(i);
915 MaskedArray<Float> mleft = maskedArray(lspecvec, lflagvec);
916 MaskedArray<Float> mright = maskedArray(rspecvec, rflagvec);
917 if (mode == "ADD") {
918 mleft += mright;
919 } else if ( mode == "SUB") {
920 mleft -= mright;
921 } else if ( mode == "MUL") {
922 mleft *= mright;
923 } else if ( mode == "DIV") {
924 mleft /= mright;
925 } else {
926 throw(AipsError("Illegal binary operator"));
927 }
928 lspecCol.put(i, mleft.getArray());
929 }
930 return out;
931}
932
933
934
935MaskedArray<Float> STMath::maskedArray( const Vector<Float>& s,
936 const Vector<uChar>& f)
937{
938 Vector<Bool> mask;
939 mask.resize(f.shape());
940 convertArray(mask, f);
941 return MaskedArray<Float>(s,!mask);
942}
943
944MaskedArray<Double> STMath::maskedArray( const Vector<Double>& s,
945 const Vector<uChar>& f)
946{
947 Vector<Bool> mask;
948 mask.resize(f.shape());
949 convertArray(mask, f);
950 return MaskedArray<Double>(s,!mask);
951}
952
953Vector<uChar> STMath::flagsFromMA(const MaskedArray<Float>& ma)
954{
955 const Vector<Bool>& m = ma.getMask();
956 Vector<uChar> flags(m.shape());
957 convertArray(flags, !m);
958 return flags;
959}
960
961CountedPtr< Scantable > STMath::autoQuotient( const CountedPtr< Scantable >& in,
962 const std::string & mode,
963 bool preserve )
964{
965 /// @todo make other modes available
966 /// modes should be "nearest", "pair"
967 // make this operation non insitu
968 (void) mode; //currently unused
969 const Table& tin = in->table();
970 Table ons = tin(tin.col("SRCTYPE") == Int(SrcType::PSON));
971 Table offs = tin(tin.col("SRCTYPE") == Int(SrcType::PSOFF));
972 if ( offs.nrow() == 0 )
973 throw(AipsError("No 'off' scans present."));
974 // put all "on" scans into output table
975
976 bool insitu = insitu_;
977 setInsitu(false);
978 CountedPtr< Scantable > out = getScantable(in, true);
979 setInsitu(insitu);
980 Table& tout = out->table();
981
982 TableCopy::copyRows(tout, ons);
983 TableRow row(tout);
984 ROScalarColumn<Double> offtimeCol(offs, "TIME");
985 ArrayColumn<Float> outspecCol(tout, "SPECTRA");
986 ROArrayColumn<Float> outtsysCol(tout, "TSYS");
987 ArrayColumn<uChar> outflagCol(tout, "FLAGTRA");
988 for (uInt i=0; i < tout.nrow(); ++i) {
989 const TableRecord& rec = row.get(i);
990 Double ontime = rec.asDouble("TIME");
991 Table presel = offs(offs.col("BEAMNO") == Int(rec.asuInt("BEAMNO"))
992 && offs.col("IFNO") == Int(rec.asuInt("IFNO"))
993 && offs.col("POLNO") == Int(rec.asuInt("POLNO")) );
994 ROScalarColumn<Double> offtimeCol(presel, "TIME");
995
996 Double mindeltat = min(abs(offtimeCol.getColumn() - ontime));
997 // Timestamp may vary within a cycle ???!!!
998 // increase this by 0.01 sec in case of rounding errors...
999 // There might be a better way to do this.
1000 // fix to this fix. TIME is MJD, so 1.0d not 1.0s
1001 mindeltat += 0.01/24./60./60.;
1002 Table sel = presel( abs(presel.col("TIME")-ontime) <= mindeltat);
1003
1004 if ( sel.nrow() < 1 ) {
1005 throw(AipsError("No closest in time found... This could be a rounding "
1006 "issue. Try quotient instead."));
1007 }
1008 TableRow offrow(sel);
1009 const TableRecord& offrec = offrow.get(0);//should only be one row
1010 RORecordFieldPtr< Array<Float> > specoff(offrec, "SPECTRA");
1011 RORecordFieldPtr< Array<Float> > tsysoff(offrec, "TSYS");
1012 RORecordFieldPtr< Array<uChar> > flagoff(offrec, "FLAGTRA");
1013 /// @fixme this assumes tsys is a scalar not vector
1014 Float tsysoffscalar = (*tsysoff)(IPosition(1,0));
1015 Vector<Float> specon, tsyson;
1016 outtsysCol.get(i, tsyson);
1017 outspecCol.get(i, specon);
1018 Vector<uChar> flagon;
1019 outflagCol.get(i, flagon);
1020 MaskedArray<Float> mon = maskedArray(specon, flagon);
1021 MaskedArray<Float> moff = maskedArray(*specoff, *flagoff);
1022 MaskedArray<Float> quot = (tsysoffscalar * mon / moff);
1023 if (preserve) {
1024 quot -= tsysoffscalar;
1025 } else {
1026 quot -= tsyson[0];
1027 }
1028 outspecCol.put(i, quot.getArray());
1029 outflagCol.put(i, flagsFromMA(quot));
1030 }
1031 // renumber scanno
1032 TableIterator it(tout, "SCANNO");
1033 uInt i = 0;
1034 while ( !it.pastEnd() ) {
1035 Table t = it.table();
1036 TableVector<uInt> vec(t, "SCANNO");
1037 vec = i;
1038 ++i;
1039 ++it;
1040 }
1041 return out;
1042}
1043
1044
1045CountedPtr< Scantable > STMath::quotient( const CountedPtr< Scantable > & on,
1046 const CountedPtr< Scantable > & off,
1047 bool preserve )
1048{
1049 bool insitu = insitu_;
1050 if ( ! on->conformant(*off) ) {
1051 throw(AipsError("'on' and 'off' scantables are not conformant."));
1052 }
1053 setInsitu(false);
1054 CountedPtr< Scantable > out = getScantable(on, false);
1055 setInsitu(insitu);
1056 Table& tout = out->table();
1057 const Table& toff = off->table();
1058 TableIterator sit(tout, "SCANNO");
1059 TableIterator s2it(toff, "SCANNO");
1060 while ( !sit.pastEnd() ) {
1061 Table ton = sit.table();
1062 TableRow row(ton);
1063 Table t = s2it.table();
1064 ArrayColumn<Float> outspecCol(ton, "SPECTRA");
1065 ROArrayColumn<Float> outtsysCol(ton, "TSYS");
1066 ArrayColumn<uChar> outflagCol(ton, "FLAGTRA");
1067 for (uInt i=0; i < ton.nrow(); ++i) {
1068 const TableRecord& rec = row.get(i);
1069 Table offsel = t( t.col("BEAMNO") == Int(rec.asuInt("BEAMNO"))
1070 && t.col("IFNO") == Int(rec.asuInt("IFNO"))
1071 && t.col("POLNO") == Int(rec.asuInt("POLNO")) );
1072 if ( offsel.nrow() == 0 )
1073 throw AipsError("STMath::quotient: no matching off");
1074 TableRow offrow(offsel);
1075 const TableRecord& offrec = offrow.get(0);//should be ncycles - take first
1076 RORecordFieldPtr< Array<Float> > specoff(offrec, "SPECTRA");
1077 RORecordFieldPtr< Array<Float> > tsysoff(offrec, "TSYS");
1078 RORecordFieldPtr< Array<uChar> > flagoff(offrec, "FLAGTRA");
1079 Float tsysoffscalar = (*tsysoff)(IPosition(1,0));
1080 Vector<Float> specon, tsyson;
1081 outtsysCol.get(i, tsyson);
1082 outspecCol.get(i, specon);
1083 Vector<uChar> flagon;
1084 outflagCol.get(i, flagon);
1085 MaskedArray<Float> mon = maskedArray(specon, flagon);
1086 MaskedArray<Float> moff = maskedArray(*specoff, *flagoff);
1087 MaskedArray<Float> quot = (tsysoffscalar * mon / moff);
1088 if (preserve) {
1089 quot -= tsysoffscalar;
1090 } else {
1091 quot -= tsyson[0];
1092 }
1093 outspecCol.put(i, quot.getArray());
1094 outflagCol.put(i, flagsFromMA(quot));
1095 }
1096 ++sit;
1097 ++s2it;
1098 // take the first off for each on scan which doesn't have a
1099 // matching off scan
1100 // non <= noff: matching pairs, non > noff matching pairs then first off
1101 if ( s2it.pastEnd() ) s2it.reset();
1102 }
1103 return out;
1104}
1105
1106// dototalpower (migration of GBTIDL procedure dototalpower.pro)
1107// calibrate the CAL on-off pair. It calculate Tsys and average CAL on-off subintegrations
1108// do it for each cycles in a specific scan.
1109CountedPtr< Scantable > STMath::dototalpower( const CountedPtr< Scantable >& calon,
1110 const CountedPtr< Scantable >& caloff, Float tcal )
1111{
1112 if ( ! calon->conformant(*caloff) ) {
1113 throw(AipsError("'CAL on' and 'CAL off' scantables are not conformant."));
1114 }
1115 setInsitu(false);
1116 CountedPtr< Scantable > out = getScantable(caloff, false);
1117 Table& tout = out->table();
1118 const Table& tcon = calon->table();
1119 Vector<Float> tcalout;
1120
1121 std::map<uInt,uInt> tcalIdToRecNoMap;
1122 const Table& calOffTcalTable = caloff->tcal().table();
1123 {
1124 ROScalarColumn<uInt> calOffTcalTable_IDcol(calOffTcalTable, "ID");
1125 const Vector<uInt> tcalIds(calOffTcalTable_IDcol.getColumn());
1126 size_t tcalIdsEnd = tcalIds.nelements();
1127 for (uInt i = 0; i < tcalIdsEnd; i++) {
1128 tcalIdToRecNoMap[tcalIds[i]] = i;
1129 }
1130 }
1131 ROArrayColumn<Float> calOffTcalTable_TCALcol(calOffTcalTable, "TCAL");
1132
1133 if ( tout.nrow() != tcon.nrow() ) {
1134 throw(AipsError("Mismatch in number of rows to form cal on - off pair."));
1135 }
1136 // iteration by scanno or cycle no.
1137 TableIterator sit(tout, "SCANNO");
1138 TableIterator s2it(tcon, "SCANNO");
1139 while ( !sit.pastEnd() ) {
1140 Table toff = sit.table();
1141 TableRow row(toff);
1142 Table t = s2it.table();
1143 ScalarColumn<Double> outintCol(toff, "INTERVAL");
1144 ArrayColumn<Float> outspecCol(toff, "SPECTRA");
1145 ArrayColumn<Float> outtsysCol(toff, "TSYS");
1146 ArrayColumn<uChar> outflagCol(toff, "FLAGTRA");
1147 ROScalarColumn<uInt> outtcalIdCol(toff, "TCAL_ID");
1148 ROScalarColumn<uInt> outpolCol(toff, "POLNO");
1149 ROScalarColumn<Double> onintCol(t, "INTERVAL");
1150 ROArrayColumn<Float> onspecCol(t, "SPECTRA");
1151 ROArrayColumn<Float> ontsysCol(t, "TSYS");
1152 ROArrayColumn<uChar> onflagCol(t, "FLAGTRA");
1153 //ROScalarColumn<uInt> ontcalIdCol(t, "TCAL_ID");
1154
1155 for (uInt i=0; i < toff.nrow(); ++i) {
1156 //skip these checks -> assumes the data order are the same between the cal on off pairs
1157 //
1158 Vector<Float> specCalon, specCaloff;
1159 // to store scalar (mean) tsys
1160 Vector<Float> tsysout(1);
1161 uInt tcalId, polno;
1162 Double offint, onint;
1163 outpolCol.get(i, polno);
1164 outspecCol.get(i, specCaloff);
1165 onspecCol.get(i, specCalon);
1166 Vector<uChar> flagCaloff, flagCalon;
1167 outflagCol.get(i, flagCaloff);
1168 onflagCol.get(i, flagCalon);
1169 outtcalIdCol.get(i, tcalId);
1170 outintCol.get(i, offint);
1171 onintCol.get(i, onint);
1172 // caluculate mean Tsys
1173 uInt nchan = specCaloff.nelements();
1174 // percentage of edge cut off
1175 uInt pc = 10;
1176 uInt bchan = nchan/pc;
1177 uInt echan = nchan-bchan;
1178
1179 Slicer chansl(IPosition(1,bchan-1), IPosition(1,echan-1), IPosition(1,1),Slicer::endIsLast);
1180 Vector<Float> testsubsp = specCaloff(chansl);
1181 MaskedArray<Float> spoff = maskedArray( specCaloff(chansl),flagCaloff(chansl) );
1182 MaskedArray<Float> spon = maskedArray( specCalon(chansl),flagCalon(chansl) );
1183 MaskedArray<Float> spdiff = spon-spoff;
1184 uInt noff = spoff.nelementsValid();
1185 //uInt non = spon.nelementsValid();
1186 uInt ndiff = spdiff.nelementsValid();
1187 Float meantsys;
1188
1189/**
1190 Double subspec, subdiff;
1191 uInt usednchan;
1192 subspec = 0;
1193 subdiff = 0;
1194 usednchan = 0;
1195 for(uInt k=(bchan-1); k<echan; k++) {
1196 subspec += specCaloff[k];
1197 subdiff += static_cast<Double>(specCalon[k]-specCaloff[k]);
1198 ++usednchan;
1199 }
1200**/
1201 // get tcal if input tcal <= 0
1202 Float tcalUsed;
1203 tcalUsed = tcal;
1204 if ( tcal <= 0.0 ) {
1205 uInt tcalRecNo = tcalIdToRecNoMap[tcalId];
1206 calOffTcalTable_TCALcol.get(tcalRecNo, tcalout);
1207// if (polno<=3) {
1208// tcalUsed = tcalout[polno];
1209// }
1210// else {
1211// tcalUsed = tcalout[0];
1212// }
1213 if ( tcalout.size() == 1 )
1214 tcalUsed = tcalout[0] ;
1215 else if ( tcalout.size() == nchan )
1216 tcalUsed = mean(tcalout) ;
1217 else {
1218 uInt ipol = polno ;
1219 if ( ipol > 3 ) ipol = 0 ;
1220 tcalUsed = tcalout[ipol] ;
1221 }
1222 }
1223
1224 Float meanoff;
1225 Float meandiff;
1226 if (noff && ndiff) {
1227 //Debug
1228 //if(noff!=ndiff) cerr<<"noff and ndiff is not equal"<<endl;
1229 //LogIO os( LogOrigin( "STMath", "dototalpower()", WHERE ) ) ;
1230 //if(noff!=ndiff) os<<"noff and ndiff is not equal"<<LogIO::POST;
1231 meanoff = sum(spoff)/noff;
1232 meandiff = sum(spdiff)/ndiff;
1233 meantsys= (meanoff/meandiff )*tcalUsed + tcalUsed/2;
1234 }
1235 else {
1236 meantsys=1;
1237 }
1238
1239 tsysout[0] = Float(meantsys);
1240 MaskedArray<Float> mcaloff = maskedArray(specCaloff, flagCaloff);
1241 MaskedArray<Float> mcalon = maskedArray(specCalon, flagCalon);
1242 MaskedArray<Float> sig = Float(0.5) * (mcaloff + mcalon);
1243 //uInt ncaloff = mcaloff.nelementsValid();
1244 //uInt ncalon = mcalon.nelementsValid();
1245
1246 outintCol.put(i, offint+onint);
1247 outspecCol.put(i, sig.getArray());
1248 outflagCol.put(i, flagsFromMA(sig));
1249 outtsysCol.put(i, tsysout);
1250 }
1251 ++sit;
1252 ++s2it;
1253 }
1254 return out;
1255}
1256
1257//dosigref - migrated from GBT IDL's dosigref.pro, do calibration of position switch
1258// observatiions.
1259// input: sig and ref scantables, and an optional boxcar smoothing width(default width=0,
1260// no smoothing).
1261// output: resultant scantable [= (sig-ref/ref)*tsys]
1262CountedPtr< Scantable > STMath::dosigref( const CountedPtr < Scantable >& sig,
1263 const CountedPtr < Scantable >& ref,
1264 int smoothref,
1265 casa::Float tsysv,
1266 casa::Float tau )
1267{
1268 LogIO os( casa::LogOrigin( "STMath", "dosigref()"));
1269if ( ! ref->conformant(*sig) ) {
1270 throw(AipsError("'sig' and 'ref' scantables are not conformant."));
1271 }
1272 setInsitu(false);
1273 CountedPtr< Scantable > out = getScantable(sig, false);
1274 CountedPtr< Scantable > smref;
1275 if ( smoothref > 1 ) {
1276 float fsmoothref = static_cast<float>(smoothref);
1277 std::string inkernel = "boxcar";
1278 smref = smooth(ref, inkernel, fsmoothref );
1279 ostringstream oss;
1280 os <<"Applied smoothing of "<<fsmoothref<<" on the reference."
1281 << LogIO::POST;
1282 }
1283 else {
1284 smref = ref;
1285 }
1286 Table& tout = out->table();
1287 const Table& tref = smref->table();
1288 if ( tout.nrow() != tref.nrow() ) {
1289 throw(AipsError("Mismatch in number of rows to form on-source and reference pair."));
1290 }
1291 // iteration by scanno? or cycle no.
1292 TableIterator sit(tout, "SCANNO");
1293 TableIterator s2it(tref, "SCANNO");
1294 while ( !sit.pastEnd() ) {
1295 Table ton = sit.table();
1296 Table t = s2it.table();
1297 ScalarColumn<Double> outintCol(ton, "INTERVAL");
1298 ArrayColumn<Float> outspecCol(ton, "SPECTRA");
1299 ArrayColumn<Float> outtsysCol(ton, "TSYS");
1300 ArrayColumn<uChar> outflagCol(ton, "FLAGTRA");
1301 ArrayColumn<Float> refspecCol(t, "SPECTRA");
1302 ROScalarColumn<Double> refintCol(t, "INTERVAL");
1303 ROArrayColumn<Float> reftsysCol(t, "TSYS");
1304 ArrayColumn<uChar> refflagCol(t, "FLAGTRA");
1305 ROScalarColumn<Float> refelevCol(t, "ELEVATION");
1306 for (uInt i=0; i < ton.nrow(); ++i) {
1307
1308 Double onint, refint;
1309 Vector<Float> specon, specref;
1310 // to store scalar (mean) tsys
1311 Vector<Float> tsysref;
1312 outintCol.get(i, onint);
1313 refintCol.get(i, refint);
1314 outspecCol.get(i, specon);
1315 refspecCol.get(i, specref);
1316 Vector<uChar> flagref, flagon;
1317 outflagCol.get(i, flagon);
1318 refflagCol.get(i, flagref);
1319 reftsysCol.get(i, tsysref);
1320
1321 Float tsysrefscalar;
1322 if ( tsysv > 0.0 ) {
1323 ostringstream oss;
1324 Float elev;
1325 refelevCol.get(i, elev);
1326 os << "user specified Tsys = " << tsysv;
1327 // do recalc elevation if EL = 0
1328 if ( elev == 0 ) {
1329 throw(AipsError("EL=0, elevation data is missing."));
1330 } else {
1331 if ( tau <= 0.0 ) {
1332 throw(AipsError("Valid tau is not supplied."));
1333 } else {
1334 tsysrefscalar = tsysv * exp(tau/elev);
1335 }
1336 }
1337 os << ", corrected (for El) tsys= "<<tsysrefscalar;
1338 }
1339 else {
1340 tsysrefscalar = tsysref[0];
1341 }
1342 //get quotient spectrum
1343 MaskedArray<Float> mref = maskedArray(specref, flagref);
1344 MaskedArray<Float> mon = maskedArray(specon, flagon);
1345 MaskedArray<Float> specres = tsysrefscalar*((mon - mref)/mref);
1346 Double resint = onint*refint*smoothref/(onint+refint*smoothref);
1347
1348 //Debug
1349 //cerr<<"Tsys used="<<tsysrefscalar<<endl;
1350 //LogIO os( LogOrigin( "STMath", "dosigref", WHERE ) ) ;
1351 //os<<"Tsys used="<<tsysrefscalar<<LogIO::POST;
1352 // fill the result, replay signal tsys by reference tsys
1353 outintCol.put(i, resint);
1354 outspecCol.put(i, specres.getArray());
1355 outflagCol.put(i, flagsFromMA(specres));
1356 outtsysCol.put(i, tsysref);
1357 }
1358 ++sit;
1359 ++s2it;
1360 }
1361
1362 out->setFluxUnit("K");
1363
1364 return out;
1365}
1366
1367CountedPtr< Scantable > STMath::donod(const casa::CountedPtr<Scantable>& s,
1368 const std::vector<int>& scans,
1369 int smoothref,
1370 casa::Float tsysv,
1371 casa::Float tau,
1372 casa::Float tcal )
1373
1374{
1375 setInsitu(false);
1376 LogIO os( casa::LogOrigin( "STMath", "donod()"));
1377 STSelector sel;
1378 std::vector<int> scan1, scan2, beams, types;
1379 std::vector< vector<int> > scanpair;
1380 //std::vector<string> calstate;
1381 std::vector<int> calstate;
1382 String msg;
1383
1384 CountedPtr< Scantable > s1b1on, s1b1off, s1b2on, s1b2off;
1385 CountedPtr< Scantable > s2b1on, s2b1off, s2b2on, s2b2off;
1386
1387 std::vector< CountedPtr< Scantable > > sctables;
1388 sctables.push_back(s1b1on);
1389 sctables.push_back(s1b1off);
1390 sctables.push_back(s1b2on);
1391 sctables.push_back(s1b2off);
1392 sctables.push_back(s2b1on);
1393 sctables.push_back(s2b1off);
1394 sctables.push_back(s2b2on);
1395 sctables.push_back(s2b2off);
1396
1397 //check scanlist
1398 int n=s->checkScanInfo(scans);
1399 if (n==1) {
1400 throw(AipsError("Incorrect scan pairs. "));
1401 }
1402
1403 // Assume scans contain only a pair of consecutive scan numbers.
1404 // It is assumed that first beam, b1, is on target.
1405 // There is no check if the first beam is on or not.
1406 if ( scans.size()==1 ) {
1407 scan1.push_back(scans[0]);
1408 scan2.push_back(scans[0]+1);
1409 } else if ( scans.size()==2 ) {
1410 scan1.push_back(scans[0]);
1411 scan2.push_back(scans[1]);
1412 } else {
1413 if ( scans.size()%2 == 0 ) {
1414 for (uInt i=0; i<scans.size(); i++) {
1415 if (i%2 == 0) {
1416 scan1.push_back(scans[i]);
1417 }
1418 else {
1419 scan2.push_back(scans[i]);
1420 }
1421 }
1422 } else {
1423 throw(AipsError("Odd numbers of scans, cannot form pairs."));
1424 }
1425 }
1426 scanpair.push_back(scan1);
1427 scanpair.push_back(scan2);
1428 //calstate.push_back("*calon");
1429 //calstate.push_back("*[^calon]");
1430 calstate.push_back(SrcType::NODCAL);
1431 calstate.push_back(SrcType::NOD);
1432 CountedPtr< Scantable > ws = getScantable(s, false);
1433 uInt l=0;
1434 while ( l < sctables.size() ) {
1435 for (uInt i=0; i < 2; i++) {
1436 for (uInt j=0; j < 2; j++) {
1437 for (uInt k=0; k < 2; k++) {
1438 sel.reset();
1439 sel.setScans(scanpair[i]);
1440 //sel.setName(calstate[k]);
1441 types.clear();
1442 types.push_back(calstate[k]);
1443 sel.setTypes(types);
1444 beams.clear();
1445 beams.push_back(j);
1446 sel.setBeams(beams);
1447 ws->setSelection(sel);
1448 sctables[l]= getScantable(ws, false);
1449 l++;
1450 }
1451 }
1452 }
1453 }
1454
1455 // replace here by splitData or getData functionality
1456 CountedPtr< Scantable > sig1;
1457 CountedPtr< Scantable > ref1;
1458 CountedPtr< Scantable > sig2;
1459 CountedPtr< Scantable > ref2;
1460 CountedPtr< Scantable > calb1;
1461 CountedPtr< Scantable > calb2;
1462
1463 msg=String("Processing dototalpower for subset of the data");
1464 os << msg << LogIO::POST;
1465 // Debug for IRC CS data
1466 //float tcal1=7.0;
1467 //float tcal2=4.0;
1468 sig1 = dototalpower(sctables[0], sctables[1], tcal=tcal);
1469 ref1 = dototalpower(sctables[2], sctables[3], tcal=tcal);
1470 ref2 = dototalpower(sctables[4], sctables[5], tcal=tcal);
1471 sig2 = dototalpower(sctables[6], sctables[7], tcal=tcal);
1472
1473 // correction of user-specified tsys for elevation here
1474
1475 // dosigref calibration
1476 msg=String("Processing dosigref for subset of the data");
1477 os << msg << endl;
1478 calb1=dosigref(sig1,ref2,smoothref,tsysv,tau);
1479 calb2=dosigref(sig2,ref1,smoothref,tsysv,tau);
1480
1481 // iteration by scanno or cycle no.
1482 Table& tcalb1 = calb1->table();
1483 Table& tcalb2 = calb2->table();
1484 TableIterator sit(tcalb1, "SCANNO");
1485 TableIterator s2it(tcalb2, "SCANNO");
1486 while ( !sit.pastEnd() ) {
1487 Table t1 = sit.table();
1488 Table t2= s2it.table();
1489 ArrayColumn<Float> outspecCol(t1, "SPECTRA");
1490 ArrayColumn<Float> outtsysCol(t1, "TSYS");
1491 ArrayColumn<uChar> outflagCol(t1, "FLAGTRA");
1492 ScalarColumn<Double> outintCol(t1, "INTERVAL");
1493 ArrayColumn<Float> t2specCol(t2, "SPECTRA");
1494 ROArrayColumn<Float> t2tsysCol(t2, "TSYS");
1495 ArrayColumn<uChar> t2flagCol(t2, "FLAGTRA");
1496 ROScalarColumn<Double> t2intCol(t2, "INTERVAL");
1497 for (uInt i=0; i < t1.nrow(); ++i) {
1498 Vector<Float> spec1, spec2;
1499 // to store scalar (mean) tsys
1500 Vector<Float> tsys1, tsys2;
1501 Vector<uChar> flag1, flag2;
1502 Double tint1, tint2;
1503 outspecCol.get(i, spec1);
1504 t2specCol.get(i, spec2);
1505 outflagCol.get(i, flag1);
1506 t2flagCol.get(i, flag2);
1507 outtsysCol.get(i, tsys1);
1508 t2tsysCol.get(i, tsys2);
1509 outintCol.get(i, tint1);
1510 t2intCol.get(i, tint2);
1511 // average
1512 // assume scalar tsys for weights
1513 Float wt1, wt2, tsyssq1, tsyssq2;
1514 tsyssq1 = tsys1[0]*tsys1[0];
1515 tsyssq2 = tsys2[0]*tsys2[0];
1516 wt1 = Float(tint1)/tsyssq1;
1517 wt2 = Float(tint2)/tsyssq2;
1518 Float invsumwt=1/(wt1+wt2);
1519 MaskedArray<Float> mspec1 = maskedArray(spec1, flag1);
1520 MaskedArray<Float> mspec2 = maskedArray(spec2, flag2);
1521 MaskedArray<Float> avspec = invsumwt * (wt1*mspec1 + wt2*mspec2);
1522 //Array<Float> avtsys = Float(0.5) * (tsys1 + tsys2);
1523 // cerr<< "Tsys1="<<tsys1<<" Tsys2="<<tsys2<<endl;
1524 // LogIO os( LogOrigin( "STMath", "donod", WHERE ) ) ;
1525 // os<< "Tsys1="<<tsys1<<" Tsys2="<<tsys2<<LogIO::POST;
1526 tsys1[0] = sqrt(tsyssq1 + tsyssq2);
1527 Array<Float> avtsys = tsys1;
1528
1529 outspecCol.put(i, avspec.getArray());
1530 outflagCol.put(i, flagsFromMA(avspec));
1531 outtsysCol.put(i, avtsys);
1532 }
1533 ++sit;
1534 ++s2it;
1535 }
1536
1537 calb1->setFluxUnit("K");
1538
1539 return calb1;
1540}
1541
1542//GBTIDL version of frequency switched data calibration
1543CountedPtr< Scantable > STMath::dofs( const CountedPtr< Scantable >& s,
1544 const std::vector<int>& scans,
1545 int smoothref,
1546 casa::Float tsysv,
1547 casa::Float tau,
1548 casa::Float tcal )
1549{
1550
1551
1552 (void) scans; //currently unused
1553 STSelector sel;
1554 CountedPtr< Scantable > ws = getScantable(s, false);
1555 CountedPtr< Scantable > sig, sigwcal, ref, refwcal;
1556 CountedPtr< Scantable > calsig, calref, out, out1, out2;
1557 Bool nofold=False;
1558 vector<int> types ;
1559
1560 //split the data
1561 //sel.setName("*_fs");
1562 types.push_back( SrcType::FSON ) ;
1563 sel.setTypes( types ) ;
1564 ws->setSelection(sel);
1565 sig = getScantable(ws,false);
1566 sel.reset();
1567 types.clear() ;
1568 //sel.setName("*_fs_calon");
1569 types.push_back( SrcType::FONCAL ) ;
1570 sel.setTypes( types ) ;
1571 ws->setSelection(sel);
1572 sigwcal = getScantable(ws,false);
1573 sel.reset();
1574 types.clear() ;
1575 //sel.setName("*_fsr");
1576 types.push_back( SrcType::FSOFF ) ;
1577 sel.setTypes( types ) ;
1578 ws->setSelection(sel);
1579 ref = getScantable(ws,false);
1580 sel.reset();
1581 types.clear() ;
1582 //sel.setName("*_fsr_calon");
1583 types.push_back( SrcType::FOFFCAL ) ;
1584 sel.setTypes( types ) ;
1585 ws->setSelection(sel);
1586 refwcal = getScantable(ws,false);
1587 sel.reset() ;
1588 types.clear() ;
1589
1590 calsig = dototalpower(sigwcal, sig, tcal=tcal);
1591 calref = dototalpower(refwcal, ref, tcal=tcal);
1592
1593 out1=dosigref(calsig,calref,smoothref,tsysv,tau);
1594 out2=dosigref(calref,calsig,smoothref,tsysv,tau);
1595
1596 Table& tabout1=out1->table();
1597 Table& tabout2=out2->table();
1598 ROScalarColumn<uInt> freqidCol1(tabout1, "FREQ_ID");
1599 ScalarColumn<uInt> freqidCol2(tabout2, "FREQ_ID");
1600 ROArrayColumn<Float> specCol(tabout2, "SPECTRA");
1601 Vector<Float> spec; specCol.get(0, spec);
1602 uInt nchan = spec.nelements();
1603 uInt freqid1; freqidCol1.get(0,freqid1);
1604 uInt freqid2; freqidCol2.get(0,freqid2);
1605 Double rp1, rp2, rv1, rv2, inc1, inc2;
1606 out1->frequencies().getEntry(rp1, rv1, inc1, freqid1);
1607 out2->frequencies().getEntry(rp2, rv2, inc2, freqid2);
1608 //cerr << out1->frequencies().table().nrow() << " " << out2->frequencies().table().nrow() << endl ;
1609 //LogIO os( LogOrigin( "STMath", "dofs()", WHERE ) ) ;
1610 //os << out1->frequencies().table().nrow() << " " << out2->frequencies().table().nrow() << LogIO::POST ;
1611 if (rp1==rp2) {
1612 Double foffset = rv1 - rv2;
1613 uInt choffset = static_cast<uInt>(foffset/abs(inc2));
1614 if (choffset >= nchan) {
1615 //cerr<<"out-band frequency switching, no folding"<<endl;
1616 LogIO os( LogOrigin( "STMath", "dofs()", WHERE ) ) ;
1617 os<<"out-band frequency switching, no folding"<<LogIO::POST;
1618 nofold = True;
1619 }
1620 }
1621
1622 if (nofold) {
1623 std::vector< CountedPtr< Scantable > > tabs;
1624 tabs.push_back(out1);
1625 tabs.push_back(out2);
1626 out = merge(tabs);
1627 }
1628 else {
1629 //out = out1;
1630 Double choffset = ( rv1 - rv2 ) / inc2 ;
1631 out = dofold( out1, out2, choffset ) ;
1632 }
1633
1634 out->setFluxUnit("K");
1635
1636 return out;
1637}
1638
1639CountedPtr<Scantable> STMath::dofold( const CountedPtr<Scantable> &sig,
1640 const CountedPtr<Scantable> &ref,
1641 Double choffset,
1642 Double choffset2 )
1643{
1644 LogIO os( LogOrigin( "STMath", "dofold", WHERE ) ) ;
1645 os << "choffset=" << choffset << " choffset2=" << choffset2 << LogIO::POST ;
1646
1647 // output scantable
1648 CountedPtr<Scantable> out = getScantable( sig, false ) ;
1649
1650 // separate choffset to integer part and decimal part
1651 Int ioffset = (Int)choffset ;
1652 Double doffset = choffset - ioffset ;
1653 Int ioffset2 = (Int)choffset2 ;
1654 Double doffset2 = choffset2 - ioffset2 ;
1655 os << "ioffset=" << ioffset << " doffset=" << doffset << LogIO::POST ;
1656 os << "ioffset2=" << ioffset2 << " doffset2=" << doffset2 << LogIO::POST ;
1657
1658 // get column
1659 ROArrayColumn<Float> specCol1( sig->table(), "SPECTRA" ) ;
1660 ROArrayColumn<Float> specCol2( ref->table(), "SPECTRA" ) ;
1661 ROArrayColumn<Float> tsysCol1( sig->table(), "TSYS" ) ;
1662 ROArrayColumn<Float> tsysCol2( ref->table(), "TSYS" ) ;
1663 ROArrayColumn<uChar> flagCol1( sig->table(), "FLAGTRA" ) ;
1664 ROArrayColumn<uChar> flagCol2( ref->table(), "FLAGTRA" ) ;
1665 ROScalarColumn<Double> mjdCol1( sig->table(), "TIME" ) ;
1666 ROScalarColumn<Double> mjdCol2( ref->table(), "TIME" ) ;
1667 ROScalarColumn<Double> intervalCol1( sig->table(), "INTERVAL" ) ;
1668 ROScalarColumn<Double> intervalCol2( ref->table(), "INTERVAL" ) ;
1669
1670 // check
1671 if ( ioffset == 0 ) {
1672 LogIO os( LogOrigin( "STMath", "dofold()", WHERE ) ) ;
1673 os << "channel offset is zero, no folding" << LogIO::POST ;
1674 return out ;
1675 }
1676 int nchan = ref->nchan() ;
1677 if ( abs(ioffset) >= nchan ) {
1678 LogIO os( LogOrigin( "STMath", "dofold()", WHERE ) ) ;
1679 os << "out-band frequency switching, no folding" << LogIO::POST ;
1680 return out ;
1681 }
1682
1683 // attach column for output scantable
1684 ArrayColumn<Float> specColOut( out->table(), "SPECTRA" ) ;
1685 ArrayColumn<uChar> flagColOut( out->table(), "FLAGTRA" ) ;
1686 ArrayColumn<Float> tsysColOut( out->table(), "TSYS" ) ;
1687 ScalarColumn<Double> mjdColOut( out->table(), "TIME" ) ;
1688 ScalarColumn<Double> intervalColOut( out->table(), "INTERVAL" ) ;
1689 ScalarColumn<uInt> fidColOut( out->table(), "FREQ_ID" ) ;
1690
1691 // for each row
1692 // assume that the data order are same between sig and ref
1693 RowAccumulator acc( asap::W_TINTSYS ) ;
1694 for ( int i = 0 ; i < sig->nrow() ; i++ ) {
1695 // get values
1696 Vector<Float> spsig ;
1697 specCol1.get( i, spsig ) ;
1698 Vector<Float> spref ;
1699 specCol2.get( i, spref ) ;
1700 Vector<Float> tsyssig ;
1701 tsysCol1.get( i, tsyssig ) ;
1702 Vector<Float> tsysref ;
1703 tsysCol2.get( i, tsysref ) ;
1704 Vector<uChar> flagsig ;
1705 flagCol1.get( i, flagsig ) ;
1706 Vector<uChar> flagref ;
1707 flagCol2.get( i, flagref ) ;
1708 Double timesig ;
1709 mjdCol1.get( i, timesig ) ;
1710 Double timeref ;
1711 mjdCol2.get( i, timeref ) ;
1712 Double intsig ;
1713 intervalCol1.get( i, intsig ) ;
1714 Double intref ;
1715 intervalCol2.get( i, intref ) ;
1716
1717 // shift reference spectra
1718 int refchan = spref.nelements() ;
1719 Vector<Float> sspref( spref.nelements() ) ;
1720 Vector<Float> stsysref( tsysref.nelements() ) ;
1721 Vector<uChar> sflagref( flagref.nelements() ) ;
1722 if ( ioffset > 0 ) {
1723 // SPECTRA and FLAGTRA
1724 for ( int j = 0 ; j < refchan-ioffset ; j++ ) {
1725 sspref[j] = spref[j+ioffset] ;
1726 sflagref[j] = flagref[j+ioffset] ;
1727 }
1728 for ( int j = refchan-ioffset ; j < refchan ; j++ ) {
1729 sspref[j] = spref[j-refchan+ioffset] ;
1730 sflagref[j] = flagref[j-refchan+ioffset] ;
1731 }
1732 spref = sspref.copy() ;
1733 flagref = sflagref.copy() ;
1734 for ( int j = 0 ; j < refchan - 1 ; j++ ) {
1735 sspref[j] = doffset * spref[j+1] + ( 1.0 - doffset ) * spref[j] ;
1736 sflagref[j] = flagref[j+1] + flagref[j] ;
1737 }
1738 sspref[refchan-1] = doffset * spref[0] + ( 1.0 - doffset ) * spref[refchan-1] ;
1739 sflagref[refchan-1] = flagref[0] + flagref[refchan-1] ;
1740
1741 // TSYS
1742 if ( spref.nelements() == tsysref.nelements() ) {
1743 for ( int j = 0 ; j < refchan-ioffset ; j++ ) {
1744 stsysref[j] = tsysref[j+ioffset] ;
1745 }
1746 for ( int j = refchan-ioffset ; j < refchan ; j++ ) {
1747 stsysref[j] = tsysref[j-refchan+ioffset] ;
1748 }
1749 tsysref = stsysref.copy() ;
1750 for ( int j = 0 ; j < refchan - 1 ; j++ ) {
1751 stsysref[j] = doffset * tsysref[j+1] + ( 1.0 - doffset ) * tsysref[j] ;
1752 }
1753 stsysref[refchan-1] = doffset * tsysref[0] + ( 1.0 - doffset ) * tsysref[refchan-1] ;
1754 }
1755 }
1756 else {
1757 // SPECTRA and FLAGTRA
1758 for ( int j = 0 ; j < abs(ioffset) ; j++ ) {
1759 sspref[j] = spref[refchan+ioffset+j] ;
1760 sflagref[j] = flagref[refchan+ioffset+j] ;
1761 }
1762 for ( int j = abs(ioffset) ; j < refchan ; j++ ) {
1763 sspref[j] = spref[j+ioffset] ;
1764 sflagref[j] = flagref[j+ioffset] ;
1765 }
1766 spref = sspref.copy() ;
1767 flagref = sflagref.copy() ;
1768 sspref[0] = doffset * spref[refchan-1] + ( 1.0 - doffset ) * spref[0] ;
1769 sflagref[0] = flagref[0] + flagref[refchan-1] ;
1770 for ( int j = 1 ; j < refchan ; j++ ) {
1771 sspref[j] = doffset * spref[j-1] + ( 1.0 - doffset ) * spref[j] ;
1772 sflagref[j] = flagref[j-1] + flagref[j] ;
1773 }
1774 // TSYS
1775 if ( spref.nelements() == tsysref.nelements() ) {
1776 for ( int j = 0 ; j < abs(ioffset) ; j++ ) {
1777 stsysref[j] = tsysref[refchan+ioffset+j] ;
1778 }
1779 for ( int j = abs(ioffset) ; j < refchan ; j++ ) {
1780 stsysref[j] = tsysref[j+ioffset] ;
1781 }
1782 tsysref = stsysref.copy() ;
1783 stsysref[0] = doffset * tsysref[refchan-1] + ( 1.0 - doffset ) * tsysref[0] ;
1784 for ( int j = 1 ; j < refchan ; j++ ) {
1785 stsysref[j] = doffset * tsysref[j-1] + ( 1.0 - doffset ) * tsysref[j] ;
1786 }
1787 }
1788 }
1789
1790 // shift signal spectra if necessary (only for APEX?)
1791 if ( choffset2 != 0.0 ) {
1792 int sigchan = spsig.nelements() ;
1793 Vector<Float> sspsig( spsig.nelements() ) ;
1794 Vector<Float> stsyssig( tsyssig.nelements() ) ;
1795 Vector<uChar> sflagsig( flagsig.nelements() ) ;
1796 if ( ioffset2 > 0 ) {
1797 // SPECTRA and FLAGTRA
1798 for ( int j = 0 ; j < sigchan-ioffset2 ; j++ ) {
1799 sspsig[j] = spsig[j+ioffset2] ;
1800 sflagsig[j] = flagsig[j+ioffset2] ;
1801 }
1802 for ( int j = sigchan-ioffset2 ; j < sigchan ; j++ ) {
1803 sspsig[j] = spsig[j-sigchan+ioffset2] ;
1804 sflagsig[j] = flagsig[j-sigchan+ioffset2] ;
1805 }
1806 spsig = sspsig.copy() ;
1807 flagsig = sflagsig.copy() ;
1808 for ( int j = 0 ; j < sigchan - 1 ; j++ ) {
1809 sspsig[j] = doffset2 * spsig[j+1] + ( 1.0 - doffset2 ) * spsig[j] ;
1810 sflagsig[j] = flagsig[j+1] || flagsig[j] ;
1811 }
1812 sspsig[sigchan-1] = doffset2 * spsig[0] + ( 1.0 - doffset2 ) * spsig[sigchan-1] ;
1813 sflagsig[sigchan-1] = flagsig[0] || flagsig[sigchan-1] ;
1814 // TSTS
1815 if ( spsig.nelements() == tsyssig.nelements() ) {
1816 for ( int j = 0 ; j < sigchan-ioffset2 ; j++ ) {
1817 stsyssig[j] = tsyssig[j+ioffset2] ;
1818 }
1819 for ( int j = sigchan-ioffset2 ; j < sigchan ; j++ ) {
1820 stsyssig[j] = tsyssig[j-sigchan+ioffset2] ;
1821 }
1822 tsyssig = stsyssig.copy() ;
1823 for ( int j = 0 ; j < sigchan - 1 ; j++ ) {
1824 stsyssig[j] = doffset2 * tsyssig[j+1] + ( 1.0 - doffset2 ) * tsyssig[j] ;
1825 }
1826 stsyssig[sigchan-1] = doffset2 * tsyssig[0] + ( 1.0 - doffset2 ) * tsyssig[sigchan-1] ;
1827 }
1828 }
1829 else {
1830 // SPECTRA and FLAGTRA
1831 for ( int j = 0 ; j < abs(ioffset2) ; j++ ) {
1832 sspsig[j] = spsig[sigchan+ioffset2+j] ;
1833 sflagsig[j] = flagsig[sigchan+ioffset2+j] ;
1834 }
1835 for ( int j = abs(ioffset2) ; j < sigchan ; j++ ) {
1836 sspsig[j] = spsig[j+ioffset2] ;
1837 sflagsig[j] = flagsig[j+ioffset2] ;
1838 }
1839 spsig = sspsig.copy() ;
1840 flagsig = sflagsig.copy() ;
1841 sspsig[0] = doffset2 * spsig[sigchan-1] + ( 1.0 - doffset2 ) * spsig[0] ;
1842 sflagsig[0] = flagsig[0] + flagsig[sigchan-1] ;
1843 for ( int j = 1 ; j < sigchan ; j++ ) {
1844 sspsig[j] = doffset2 * spsig[j-1] + ( 1.0 - doffset2 ) * spsig[j] ;
1845 sflagsig[j] = flagsig[j-1] + flagsig[j] ;
1846 }
1847 // TSYS
1848 if ( spsig.nelements() == tsyssig.nelements() ) {
1849 for ( int j = 0 ; j < abs(ioffset2) ; j++ ) {
1850 stsyssig[j] = tsyssig[sigchan+ioffset2+j] ;
1851 }
1852 for ( int j = abs(ioffset2) ; j < sigchan ; j++ ) {
1853 stsyssig[j] = tsyssig[j+ioffset2] ;
1854 }
1855 tsyssig = stsyssig.copy() ;
1856 stsyssig[0] = doffset2 * tsyssig[sigchan-1] + ( 1.0 - doffset2 ) * tsyssig[0] ;
1857 for ( int j = 1 ; j < sigchan ; j++ ) {
1858 stsyssig[j] = doffset2 * tsyssig[j-1] + ( 1.0 - doffset2 ) * tsyssig[j] ;
1859 }
1860 }
1861 }
1862 }
1863
1864 // folding
1865 acc.add( spsig, !flagsig, tsyssig, intsig, timesig ) ;
1866 acc.add( sspref, !sflagref, stsysref, intref, timeref ) ;
1867
1868 // put result
1869 specColOut.put( i, acc.getSpectrum() ) ;
1870 const Vector<Bool> &msk = acc.getMask() ;
1871 Vector<uChar> flg( msk.shape() ) ;
1872 convertArray( flg, !msk ) ;
1873 flagColOut.put( i, flg ) ;
1874 tsysColOut.put( i, acc.getTsys() ) ;
1875 intervalColOut.put( i, acc.getInterval() ) ;
1876 mjdColOut.put( i, acc.getTime() ) ;
1877 // change FREQ_ID to unshifted IF setting (only for APEX?)
1878 if ( choffset2 != 0.0 ) {
1879 uInt freqid = fidColOut( 0 ) ; // assume single-IF data
1880 double refpix, refval, increment ;
1881 out->frequencies().getEntry( refpix, refval, increment, freqid ) ;
1882 refval -= choffset * increment ;
1883 uInt newfreqid = out->frequencies().addEntry( refpix, refval, increment ) ;
1884 Vector<uInt> freqids = fidColOut.getColumn() ;
1885 for ( uInt j = 0 ; j < freqids.nelements() ; j++ ) {
1886 if ( freqids[j] == freqid )
1887 freqids[j] = newfreqid ;
1888 }
1889 fidColOut.putColumn( freqids ) ;
1890 }
1891
1892 acc.reset() ;
1893 }
1894
1895 return out ;
1896}
1897
1898
1899CountedPtr< Scantable > STMath::freqSwitch( const CountedPtr< Scantable >& in )
1900{
1901 // make copy or reference
1902 CountedPtr< Scantable > out = getScantable(in, false);
1903 Table& tout = out->table();
1904 Block<String> cols(4);
1905 cols[0] = String("SCANNO");
1906 cols[1] = String("CYCLENO");
1907 cols[2] = String("BEAMNO");
1908 cols[3] = String("POLNO");
1909 TableIterator iter(tout, cols);
1910 while (!iter.pastEnd()) {
1911 Table subt = iter.table();
1912 // this should leave us with two rows for the two IFs....if not ignore
1913 if (subt.nrow() != 2 ) {
1914 continue;
1915 }
1916 ArrayColumn<Float> specCol(subt, "SPECTRA");
1917 ArrayColumn<Float> tsysCol(subt, "TSYS");
1918 ArrayColumn<uChar> flagCol(subt, "FLAGTRA");
1919 Vector<Float> onspec,offspec, ontsys, offtsys;
1920 Vector<uChar> onflag, offflag;
1921 tsysCol.get(0, ontsys); tsysCol.get(1, offtsys);
1922 specCol.get(0, onspec); specCol.get(1, offspec);
1923 flagCol.get(0, onflag); flagCol.get(1, offflag);
1924 MaskedArray<Float> on = maskedArray(onspec, onflag);
1925 MaskedArray<Float> off = maskedArray(offspec, offflag);
1926 MaskedArray<Float> oncopy = on.copy();
1927
1928 on /= off; on -= 1.0f;
1929 on *= ontsys[0];
1930 off /= oncopy; off -= 1.0f;
1931 off *= offtsys[0];
1932 specCol.put(0, on.getArray());
1933 const Vector<Bool>& m0 = on.getMask();
1934 Vector<uChar> flags0(m0.shape());
1935 convertArray(flags0, !m0);
1936 flagCol.put(0, flags0);
1937
1938 specCol.put(1, off.getArray());
1939 const Vector<Bool>& m1 = off.getMask();
1940 Vector<uChar> flags1(m1.shape());
1941 convertArray(flags1, !m1);
1942 flagCol.put(1, flags1);
1943 ++iter;
1944 }
1945
1946 return out;
1947}
1948
1949std::vector< float > STMath::statistic( const CountedPtr< Scantable > & in,
1950 const std::vector< bool > & mask,
1951 const std::string& which )
1952{
1953
1954 Vector<Bool> m(mask);
1955 const Table& tab = in->table();
1956 ROArrayColumn<Float> specCol(tab, "SPECTRA");
1957 ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
1958 std::vector<float> out;
1959 for (uInt i=0; i < tab.nrow(); ++i ) {
1960 Vector<Float> spec; specCol.get(i, spec);
1961 Vector<uChar> flag; flagCol.get(i, flag);
1962 MaskedArray<Float> ma = maskedArray(spec, flag);
1963 float outstat = 0.0;
1964 if ( spec.nelements() == m.nelements() ) {
1965 outstat = mathutil::statistics(which, ma(m));
1966 } else {
1967 outstat = mathutil::statistics(which, ma);
1968 }
1969 out.push_back(outstat);
1970 }
1971 return out;
1972}
1973
1974std::vector< float > STMath::statisticRow( const CountedPtr< Scantable > & in,
1975 const std::vector< bool > & mask,
1976 const std::string& which,
1977 int row )
1978{
1979
1980 Vector<Bool> m(mask);
1981 const Table& tab = in->table();
1982 ROArrayColumn<Float> specCol(tab, "SPECTRA");
1983 ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
1984 std::vector<float> out;
1985
1986 Vector<Float> spec; specCol.get(row, spec);
1987 Vector<uChar> flag; flagCol.get(row, flag);
1988 MaskedArray<Float> ma = maskedArray(spec, flag);
1989 float outstat = 0.0;
1990 if ( spec.nelements() == m.nelements() ) {
1991 outstat = mathutil::statistics(which, ma(m));
1992 } else {
1993 outstat = mathutil::statistics(which, ma);
1994 }
1995 out.push_back(outstat);
1996
1997 return out;
1998}
1999
2000std::vector< int > STMath::minMaxChan( const CountedPtr< Scantable > & in,
2001 const std::vector< bool > & mask,
2002 const std::string& which )
2003{
2004
2005 Vector<Bool> m(mask);
2006 const Table& tab = in->table();
2007 ROArrayColumn<Float> specCol(tab, "SPECTRA");
2008 ROArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2009 std::vector<int> out;
2010 for (uInt i=0; i < tab.nrow(); ++i ) {
2011 Vector<Float> spec; specCol.get(i, spec);
2012 Vector<uChar> flag; flagCol.get(i, flag);
2013 MaskedArray<Float> ma = maskedArray(spec, flag);
2014 if (ma.ndim() != 1) {
2015 throw (ArrayError(
2016 "std::vector<int> STMath::minMaxChan("
2017 "ContedPtr<Scantable> &in, std::vector<bool> &mask, "
2018 " std::string &which)"
2019 " - MaskedArray is not 1D"));
2020 }
2021 IPosition outpos(1,0);
2022 if ( spec.nelements() == m.nelements() ) {
2023 outpos = mathutil::minMaxPos(which, ma(m));
2024 } else {
2025 outpos = mathutil::minMaxPos(which, ma);
2026 }
2027 out.push_back(outpos[0]);
2028 }
2029 return out;
2030}
2031
2032CountedPtr< Scantable > STMath::bin( const CountedPtr< Scantable > & in,
2033 int width )
2034{
2035 if ( !in->getSelection().empty() ) throw(AipsError("Can't bin subset of the data."));
2036 CountedPtr< Scantable > out = getScantable(in, false);
2037 Table& tout = out->table();
2038 out->frequencies().rescale(width, "BIN");
2039 ArrayColumn<Float> specCol(tout, "SPECTRA");
2040 ArrayColumn<uChar> flagCol(tout, "FLAGTRA");
2041 ArrayColumn<Float> tsysCol(tout, "TSYS");
2042
2043 for (uInt i=0; i < tout.nrow(); ++i ) {
2044 MaskedArray<Float> main = maskedArray(specCol(i), flagCol(i));
2045 MaskedArray<Float> maout;
2046 LatticeUtilities::bin(maout, main, 0, Int(width));
2047 specCol.put(i, maout.getArray());
2048 flagCol.put(i, flagsFromMA(maout));
2049 if (tsysCol(i).nelements() == specCol(i).nelements()) {
2050 MaskedArray<Float> matsysin = maskedArray(tsysCol(i), flagCol(i));
2051 MaskedArray<Float> matsysout;
2052 LatticeUtilities::bin(matsysout, matsysin, 0, Int(width));
2053 tsysCol.put(i, matsysout.getArray());
2054 }
2055 // take only the first binned spectrum's length for the deprecated
2056 // global header item nChan
2057 if (i==0) tout.rwKeywordSet().define(String("nChan"),
2058 Int(maout.getArray().nelements()));
2059 }
2060 return out;
2061}
2062
2063CountedPtr< Scantable > STMath::resample( const CountedPtr< Scantable >& in,
2064 const std::string& method,
2065 float width )
2066//
2067// Should add the possibility of width being specified in km/s. This means
2068// that for each freqID (SpectralCoordinate) we will need to convert to an
2069// average channel width (say at the reference pixel). Then we would need
2070// to be careful to make sure each spectrum (of different freqID)
2071// is the same length.
2072//
2073{
2074 //InterpolateArray1D<Double,Float>::InterpolationMethod interp;
2075 Int interpMethod(stringToIMethod(method));
2076
2077 CountedPtr< Scantable > out = getScantable(in, false);
2078 Table& tout = out->table();
2079
2080// Resample SpectralCoordinates (one per freqID)
2081 out->frequencies().rescale(width, "RESAMPLE");
2082 TableIterator iter(tout, "IFNO");
2083 TableRow row(tout);
2084 while ( !iter.pastEnd() ) {
2085 Table tab = iter.table();
2086 ArrayColumn<Float> specCol(tab, "SPECTRA");
2087 //ArrayColumn<Float> tsysCol(tout, "TSYS");
2088 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2089 Vector<Float> spec;
2090 Vector<uChar> flag;
2091 specCol.get(0,spec); // the number of channels should be constant per IF
2092 uInt nChanIn = spec.nelements();
2093 Vector<Float> xIn(nChanIn); indgen(xIn);
2094 Int fac = Int(nChanIn/width);
2095 Vector<Float> xOut(fac+10); // 10 to be safe - resize later
2096 uInt k = 0;
2097 Float x = 0.0;
2098 while (x < Float(nChanIn) ) {
2099 xOut(k) = x;
2100 k++;
2101 x += width;
2102 }
2103 uInt nChanOut = k;
2104 xOut.resize(nChanOut, True);
2105 // process all rows for this IFNO
2106 Vector<Float> specOut;
2107 Vector<Bool> maskOut;
2108 Vector<uChar> flagOut;
2109 for (uInt i=0; i < tab.nrow(); ++i) {
2110 specCol.get(i, spec);
2111 flagCol.get(i, flag);
2112 Vector<Bool> mask(flag.nelements());
2113 convertArray(mask, flag);
2114
2115 IPosition shapeIn(spec.shape());
2116 //sh.nchan = nChanOut;
2117 InterpolateArray1D<Float,Float>::interpolate(specOut, maskOut, xOut,
2118 xIn, spec, mask,
2119 interpMethod, True, True);
2120 /// @todo do the same for channel based Tsys
2121 flagOut.resize(maskOut.nelements());
2122 convertArray(flagOut, maskOut);
2123 specCol.put(i, specOut);
2124 flagCol.put(i, flagOut);
2125 }
2126 ++iter;
2127 }
2128
2129 return out;
2130}
2131
2132STMath::imethod STMath::stringToIMethod(const std::string& in)
2133{
2134 static STMath::imap lookup;
2135
2136 // initialize the lookup table if necessary
2137 if ( lookup.empty() ) {
2138 lookup["nearest"] = InterpolateArray1D<Double,Float>::nearestNeighbour;
2139 lookup["linear"] = InterpolateArray1D<Double,Float>::linear;
2140 lookup["cubic"] = InterpolateArray1D<Double,Float>::cubic;
2141 lookup["spline"] = InterpolateArray1D<Double,Float>::spline;
2142 }
2143
2144 STMath::imap::const_iterator iter = lookup.find(in);
2145
2146 if ( lookup.end() == iter ) {
2147 std::string message = in;
2148 message += " is not a valid interpolation mode";
2149 throw(AipsError(message));
2150 }
2151 return iter->second;
2152}
2153
2154WeightType STMath::stringToWeight(const std::string& in)
2155{
2156 static std::map<std::string, WeightType> lookup;
2157
2158 // initialize the lookup table if necessary
2159 if ( lookup.empty() ) {
2160 lookup["NONE"] = asap::W_NONE;
2161 lookup["TINT"] = asap::W_TINT;
2162 lookup["TINTSYS"] = asap::W_TINTSYS;
2163 lookup["TSYS"] = asap::W_TSYS;
2164 lookup["VAR"] = asap::W_VAR;
2165 }
2166
2167 std::map<std::string, WeightType>::const_iterator iter = lookup.find(in);
2168
2169 if ( lookup.end() == iter ) {
2170 std::string message = in;
2171 message += " is not a valid weighting mode";
2172 throw(AipsError(message));
2173 }
2174 return iter->second;
2175}
2176
2177CountedPtr< Scantable > STMath::gainElevation( const CountedPtr< Scantable >& in,
2178 const vector< float > & coeff,
2179 const std::string & filename,
2180 const std::string& method)
2181{
2182 LogIO os( LogOrigin( "STMath", "gainElevation", WHERE ) ) ;
2183 // Get elevation data from Scantable and convert to degrees
2184 CountedPtr< Scantable > out = getScantable(in, false);
2185 Table& tab = out->table();
2186 ROScalarColumn<Float> elev(tab, "ELEVATION");
2187 Vector<Float> x = elev.getColumn();
2188 x *= Float(180 / C::pi); // Degrees
2189
2190 Vector<Float> coeffs(coeff);
2191 const uInt nc = coeffs.nelements();
2192 if ( filename.length() > 0 && nc > 0 ) {
2193 throw(AipsError("You must choose either polynomial coefficients or an ascii file, not both"));
2194 }
2195
2196 // Correct
2197 if ( nc > 0 || filename.length() == 0 ) {
2198 // Find instrument
2199 Bool throwit = True;
2200 Instrument inst =
2201 STAttr::convertInstrument(tab.keywordSet().asString("AntennaName"),
2202 throwit);
2203
2204 // Set polynomial
2205 Polynomial<Float>* ppoly = 0;
2206 Vector<Float> coeff;
2207 String msg;
2208 if ( nc > 0 ) {
2209 ppoly = new Polynomial<Float>(nc-1);
2210 coeff = coeffs;
2211 msg = String("user");
2212 } else {
2213 STAttr sdAttr;
2214 coeff = sdAttr.gainElevationPoly(inst);
2215 ppoly = new Polynomial<Float>(coeff.nelements()-1);
2216 msg = String("built in");
2217 }
2218
2219 if ( coeff.nelements() > 0 ) {
2220 ppoly->setCoefficients(coeff);
2221 } else {
2222 delete ppoly;
2223 throw(AipsError("There is no known gain-elevation polynomial known for this instrument"));
2224 }
2225 os << "Making polynomial correction with " << msg << " coefficients:" << endl;
2226 os << " " << coeff << LogIO::POST;
2227 const uInt nrow = tab.nrow();
2228 Vector<Float> factor(nrow);
2229 for ( uInt i=0; i < nrow; ++i ) {
2230 factor[i] = 1.0 / (*ppoly)(x[i]);
2231 }
2232 delete ppoly;
2233 scaleByVector(tab, factor, true);
2234
2235 } else {
2236 // Read and correct
2237 os << "Making correction from ascii Table" << LogIO::POST;
2238 scaleFromAsciiTable(tab, filename, method, x, true);
2239 }
2240 return out;
2241}
2242
2243void STMath::scaleFromAsciiTable(Table& in, const std::string& filename,
2244 const std::string& method,
2245 const Vector<Float>& xout, bool dotsys)
2246{
2247
2248// Read gain-elevation ascii file data into a Table.
2249
2250 String formatString;
2251 Table tbl = readAsciiTable(formatString, Table::Memory, filename, "", "", False);
2252 scaleFromTable(in, tbl, method, xout, dotsys);
2253}
2254
2255void STMath::scaleFromTable(Table& in,
2256 const Table& table,
2257 const std::string& method,
2258 const Vector<Float>& xout, bool dotsys)
2259{
2260
2261 ROScalarColumn<Float> geElCol(table, "ELEVATION");
2262 ROScalarColumn<Float> geFacCol(table, "FACTOR");
2263 Vector<Float> xin = geElCol.getColumn();
2264 Vector<Float> yin = geFacCol.getColumn();
2265 Vector<Bool> maskin(xin.nelements(),True);
2266
2267 // Interpolate (and extrapolate) with desired method
2268
2269 InterpolateArray1D<Double,Float>::InterpolationMethod interp = stringToIMethod(method);
2270
2271 Vector<Float> yout;
2272 Vector<Bool> maskout;
2273 InterpolateArray1D<Float,Float>::interpolate(yout, maskout, xout,
2274 xin, yin, maskin, interp,
2275 True, True);
2276
2277 scaleByVector(in, Float(1.0)/yout, dotsys);
2278}
2279
2280void STMath::scaleByVector( Table& in,
2281 const Vector< Float >& factor,
2282 bool dotsys )
2283{
2284 uInt nrow = in.nrow();
2285 if ( factor.nelements() != nrow ) {
2286 throw(AipsError("factors.nelements() != table.nelements()"));
2287 }
2288 ArrayColumn<Float> specCol(in, "SPECTRA");
2289 ArrayColumn<uChar> flagCol(in, "FLAGTRA");
2290 ArrayColumn<Float> tsysCol(in, "TSYS");
2291 for (uInt i=0; i < nrow; ++i) {
2292 MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i));
2293 ma *= factor[i];
2294 specCol.put(i, ma.getArray());
2295 flagCol.put(i, flagsFromMA(ma));
2296 if ( dotsys ) {
2297 Vector<Float> tsys = tsysCol(i);
2298 tsys *= factor[i];
2299 tsysCol.put(i,tsys);
2300 }
2301 }
2302}
2303
2304CountedPtr< Scantable > STMath::convertFlux( const CountedPtr< Scantable >& in,
2305 float d, float etaap,
2306 float jyperk )
2307{
2308 LogIO os( LogOrigin( "STMath", "convertFlux", WHERE ) ) ;
2309
2310 CountedPtr< Scantable > out = getScantable(in, false);
2311 Table& tab = in->table();
2312 Table& outtab = out->table();
2313 Unit fluxUnit(tab.keywordSet().asString("FluxUnit"));
2314 Unit K(String("K"));
2315 Unit JY(String("Jy"));
2316
2317 bool tokelvin = true;
2318 Double cfac = 1.0;
2319
2320 if ( fluxUnit == JY ) {
2321 os << "Converting to K" << LogIO::POST;
2322 Quantum<Double> t(1.0,fluxUnit);
2323 Quantum<Double> t2 = t.get(JY);
2324 cfac = (t2 / t).getValue(); // value to Jy
2325
2326 tokelvin = true;
2327 out->setFluxUnit("K");
2328 } else if ( fluxUnit == K ) {
2329 os << "Converting to Jy" << LogIO::POST;
2330 Quantum<Double> t(1.0,fluxUnit);
2331 Quantum<Double> t2 = t.get(K);
2332 cfac = (t2 / t).getValue(); // value to K
2333
2334 tokelvin = false;
2335 out->setFluxUnit("Jy");
2336 } else {
2337 throw(AipsError("Unrecognized brightness units in Table - must be consistent with Jy or K"));
2338 }
2339 // Make sure input values are converted to either Jy or K first...
2340 Float factor = cfac;
2341
2342 // Select method
2343 if (jyperk > 0.0) {
2344 factor *= jyperk;
2345 if ( tokelvin ) factor = 1.0 / jyperk;
2346 os << "Jy/K = " << jyperk << LogIO::POST;
2347 Vector<Float> factors(outtab.nrow(), factor);
2348 scaleByVector(outtab,factors, false);
2349 } else if ( etaap > 0.0) {
2350 if (d < 0) {
2351 Instrument inst =
2352 STAttr::convertInstrument(tab.keywordSet().asString("AntennaName"),
2353 True);
2354 STAttr sda;
2355 d = sda.diameter(inst);
2356 }
2357 jyperk = STAttr::findJyPerK(etaap, d);
2358 os << "Jy/K = " << jyperk << LogIO::POST;
2359 factor *= jyperk;
2360 if ( tokelvin ) {
2361 factor = 1.0 / factor;
2362 }
2363 Vector<Float> factors(outtab.nrow(), factor);
2364 scaleByVector(outtab, factors, False);
2365 } else {
2366
2367 // OK now we must deal with automatic look up of values.
2368 // We must also deal with the fact that the factors need
2369 // to be computed per IF and may be different and may
2370 // change per integration.
2371
2372 os <<"Looking up conversion factors" << LogIO::POST;
2373 convertBrightnessUnits(out, tokelvin, cfac);
2374 }
2375
2376 return out;
2377}
2378
2379void STMath::convertBrightnessUnits( CountedPtr<Scantable>& in,
2380 bool tokelvin, float cfac )
2381{
2382 Table& table = in->table();
2383 Instrument inst =
2384 STAttr::convertInstrument(table.keywordSet().asString("AntennaName"), True);
2385 TableIterator iter(table, "FREQ_ID");
2386 STFrequencies stfreqs = in->frequencies();
2387 STAttr sdAtt;
2388 while (!iter.pastEnd()) {
2389 Table tab = iter.table();
2390 ArrayColumn<Float> specCol(tab, "SPECTRA");
2391 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2392 ROScalarColumn<uInt> freqidCol(tab, "FREQ_ID");
2393 MEpoch::ROScalarColumn timeCol(tab, "TIME");
2394
2395 uInt freqid; freqidCol.get(0, freqid);
2396 Vector<Float> tmpspec; specCol.get(0, tmpspec);
2397 // STAttr.JyPerK has a Vector interface... change sometime.
2398 Vector<Float> freqs(1,stfreqs.getRefFreq(freqid, tmpspec.nelements()));
2399 for ( uInt i=0; i<tab.nrow(); ++i) {
2400 Float jyperk = (sdAtt.JyPerK(inst, timeCol(i), freqs))[0];
2401 Float factor = cfac * jyperk;
2402 if ( tokelvin ) factor = Float(1.0) / factor;
2403 MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i));
2404 ma *= factor;
2405 specCol.put(i, ma.getArray());
2406 flagCol.put(i, flagsFromMA(ma));
2407 }
2408 ++iter;
2409 }
2410}
2411
2412CountedPtr< Scantable > STMath::opacity( const CountedPtr< Scantable > & in,
2413 const std::vector<float>& tau )
2414{
2415 CountedPtr< Scantable > out = getScantable(in, false);
2416
2417 Table outtab = out->table();
2418
2419 const Int ntau = uInt(tau.size());
2420 std::vector<float>::const_iterator tauit = tau.begin();
2421 AlwaysAssert((ntau == 1 || ntau == in->nif() || ntau == in->nif() * in->npol()),
2422 AipsError);
2423 TableIterator iiter(outtab, "IFNO");
2424 while ( !iiter.pastEnd() ) {
2425 Table itab = iiter.table();
2426 TableIterator piter(itab, "POLNO");
2427 while ( !piter.pastEnd() ) {
2428 Table tab = piter.table();
2429 ROScalarColumn<Float> elev(tab, "ELEVATION");
2430 ArrayColumn<Float> specCol(tab, "SPECTRA");
2431 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2432 ArrayColumn<Float> tsysCol(tab, "TSYS");
2433 for ( uInt i=0; i<tab.nrow(); ++i) {
2434 Float zdist = Float(C::pi_2) - elev(i);
2435 Float factor = exp(*tauit/cos(zdist));
2436 MaskedArray<Float> ma = maskedArray(specCol(i), flagCol(i));
2437 ma *= factor;
2438 specCol.put(i, ma.getArray());
2439 flagCol.put(i, flagsFromMA(ma));
2440 Vector<Float> tsys;
2441 tsysCol.get(i, tsys);
2442 tsys *= factor;
2443 tsysCol.put(i, tsys);
2444 }
2445 if (ntau == in->nif()*in->npol() ) {
2446 tauit++;
2447 }
2448 piter++;
2449 }
2450 if (ntau >= in->nif() ) {
2451 tauit++;
2452 }
2453 iiter++;
2454 }
2455 return out;
2456}
2457
2458CountedPtr< Scantable > STMath::smoothOther( const CountedPtr< Scantable >& in,
2459 const std::string& kernel,
2460 float width, int order)
2461{
2462 CountedPtr< Scantable > out = getScantable(in, false);
2463 Table table = out->table();
2464
2465 TableIterator iter(table, "IFNO");
2466 while (!iter.pastEnd()) {
2467 Table tab = iter.table();
2468 ArrayColumn<Float> specCol(tab, "SPECTRA");
2469 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2470 Vector<Float> spec;
2471 Vector<uChar> flag;
2472 for (uInt i = 0; i < tab.nrow(); ++i) {
2473 specCol.get(i, spec);
2474 flagCol.get(i, flag);
2475 Vector<Bool> mask(flag.nelements());
2476 convertArray(mask, flag);
2477 Vector<Float> specout;
2478 Vector<Bool> maskout;
2479 if (kernel == "hanning") {
2480 mathutil::hanning(specout, maskout, spec, !mask);
2481 } else if (kernel == "rmedian") {
2482 mathutil::runningMedian(specout, maskout, spec , mask, width);
2483 } else if (kernel == "poly") {
2484 mathutil::polyfit(specout, maskout, spec, !mask, width, order);
2485 }
2486
2487 for (uInt j = 0; j < flag.nelements(); ++j) {
2488 uChar userFlag = 1 << 7;
2489 if (maskout[j]==True) userFlag = 0 << 7;
2490 flag(j) = userFlag;
2491 }
2492
2493 flagCol.put(i, flag);
2494 specCol.put(i, specout);
2495 }
2496 ++iter;
2497 }
2498 return out;
2499}
2500
2501CountedPtr< Scantable > STMath::smooth( const CountedPtr< Scantable >& in,
2502 const std::string& kernel, float width,
2503 int order)
2504{
2505 if (kernel == "rmedian" || kernel == "hanning" || kernel == "poly") {
2506 return smoothOther(in, kernel, width, order);
2507 }
2508 CountedPtr< Scantable > out = getScantable(in, false);
2509 Table& table = out->table();
2510 VectorKernel::KernelTypes type = VectorKernel::toKernelType(kernel);
2511 // same IFNO should have same no of channels
2512 // this saves overhead
2513 TableIterator iter(table, "IFNO");
2514 while (!iter.pastEnd()) {
2515 Table tab = iter.table();
2516 ArrayColumn<Float> specCol(tab, "SPECTRA");
2517 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2518 Vector<Float> spec = specCol( 0 );
2519 uInt nchan = spec.nelements();
2520 Vector<Float> kvec = VectorKernel::make(type, width, nchan, True, False);
2521 Convolver<Float> conv(kvec, IPosition(1,nchan));
2522 Vector<uChar> flag;
2523 Vector<Bool> mask(nchan);
2524 for ( uInt i=0; i<tab.nrow(); ++i) {
2525 specCol.get(i, spec);
2526 flagCol.get(i, flag);
2527 convertArray(mask, flag);
2528 Vector<Float> specout;
2529 //mathutil::replaceMaskByZero(specout, mask);
2530 mathutil::replaceMaskByZero(spec, !mask);
2531 //std::vector<bool> vmask;
2532 //(!mask).tovector(vmask);
2533 //mathutil::doZeroOrderInterpolation(spec, vmask);
2534 conv.linearConv(specout, spec);
2535 specCol.put(i, specout);
2536 }
2537 ++iter;
2538 }
2539 return out;
2540}
2541
2542CountedPtr< Scantable >
2543STMath::merge( const std::vector< CountedPtr < Scantable > >& in )
2544//STMath::merge( const std::vector< CountedPtr < Scantable > >& in,
2545// const std::string &freqTol )
2546{
2547 /**
2548 LogIO os;
2549 Double freqTolInHz = 0.0;
2550 if (freqTol.size() > 0) {
2551 Quantum<Double> freqTolInQuantity;
2552 if (!Quantum<Double>::read(freqTolInQuantity, freqTol)) {
2553 throw(AipsError("Failed to convert freqTol string to quantity"));
2554 }
2555 if (!freqTolInQuantity.isConform("Hz")) {
2556 throw(AipsError("Invalid freqTol string"));
2557 }
2558 freqTolInHz = freqTolInQuantity.getValue("Hz");
2559 }
2560 **/
2561
2562 if ( in.size() < 2 ) {
2563 throw(AipsError("Need at least two scantables to perform a merge."));
2564 }
2565 std::vector<CountedPtr < Scantable > >::const_iterator it = in.begin();
2566 bool insitu = insitu_;
2567 setInsitu(false);
2568 CountedPtr< Scantable > out = getScantable(*it, false);
2569 setInsitu(insitu);
2570 Table& tout = out->table();
2571 ScalarColumn<uInt> freqidcol(tout,"FREQ_ID"), molidcol(tout, "MOLECULE_ID");
2572 ScalarColumn<uInt> scannocol(tout,"SCANNO"), focusidcol(tout,"FOCUS_ID");
2573 ScalarColumn<uInt> ifnocol(tout, "IFNO");
2574 // Renumber SCANNO to be 0-based
2575 Vector<uInt> scannos = scannocol.getColumn();
2576 uInt offset = min(scannos);
2577 scannos -= offset;
2578 scannocol.putColumn(scannos);
2579 uInt newscanno = max(scannos)+1;
2580 ++it;
2581 while ( it != in.end() ){
2582 /**
2583 // Check FREQUENCIES/BASEFRAME
2584 if ( out->frequencies().getFrame(true) != (*it)->frequencies().getFrame(true) ) {
2585 throw(AipsError("BASEFRAME is not identical"));
2586 }
2587 **/
2588
2589 if ( ! (*it)->conformant(*out) ) {
2590 // non conformant.
2591 LogIO os( LogOrigin( "STMath", "merge()", WHERE ) ) ;
2592 os << LogIO::SEVERE << "Can't merge scantables as header informations (any one of AntennaName, Equinox, and FluxUnit) differ." << LogIO::EXCEPTION ;
2593 }
2594 out->appendToHistoryTable((*it)->history());
2595 const Table& tab = (*it)->table();
2596
2597 Block<String> cols(3);
2598 cols[0] = String("FREQ_ID");
2599 cols[1] = String("MOLECULE_ID");
2600 cols[2] = String("FOCUS_ID");
2601
2602 TableIterator scanit(tab, "SCANNO");
2603 while (!scanit.pastEnd()) {
2604 TableIterator subit(scanit.table(), cols);
2605 while ( !subit.pastEnd() ) {
2606 uInt nrow = tout.nrow();
2607 Table thetab = subit.table();
2608 ROTableRow row(thetab);
2609 Vector<uInt> thecolvals(thetab.nrow());
2610 // The selected subset of table should have
2611 // the equal FREQ_ID, MOLECULE_ID, and FOCUS_ID values.
2612 const TableRecord& rec = row.get(0);
2613 tout.addRow(thetab.nrow());
2614 TableCopy::copyRows(tout, thetab, nrow, 0, thetab.nrow());
2615
2616 Slicer slice(IPosition(1, nrow), IPosition(1, thetab.nrow()),
2617 Slicer::endIsLength);
2618
2619 // Set the proper FREQ_ID
2620 Double rv,rp,inc;
2621 (*it)->frequencies().getEntry(rp, rv, inc, rec.asuInt("FREQ_ID"));
2622 uInt id;
2623 id = out->frequencies().addEntry(rp, rv, inc);
2624 //if ( !out->frequencies().match(rp, rv, inc, freqTolInHz, id) ) {
2625 // id = out->frequencies().addEntry(rp, rv, inc);
2626 //}
2627 thecolvals = id;
2628 freqidcol.putColumnRange(slice, thecolvals);
2629
2630 // Set the proper MOLECULE_ID
2631 Vector<String> name,fname;Vector<Double> rf;
2632 (*it)->molecules().getEntry(rf, name, fname, rec.asuInt("MOLECULE_ID"));
2633 id = out->molecules().addEntry(rf, name, fname);
2634 thecolvals = id;
2635 molidcol.putColumnRange(slice, thecolvals);
2636
2637 // Set the proper FOCUS_ID
2638 Float fpa,frot,fax,ftan,fhand,fmount,fuser, fxy, fxyp;
2639 (*it)->focus().getEntry(fpa, fax, ftan, frot, fhand, fmount,fuser,
2640 fxy, fxyp, rec.asuInt("FOCUS_ID"));
2641 id = out->focus().addEntry(fpa, fax, ftan, frot, fhand, fmount,fuser,
2642 fxy, fxyp);
2643 thecolvals = id;
2644 focusidcol.putColumnRange(slice, thecolvals);
2645
2646 // Set the proper SCANNO
2647 thecolvals = newscanno;
2648 scannocol.putColumnRange(slice, thecolvals);
2649
2650 ++subit;
2651 }
2652 ++newscanno;
2653 ++scanit;
2654 }
2655 ++it;
2656 }
2657 return out;
2658}
2659
2660CountedPtr< Scantable >
2661 STMath::invertPhase( const CountedPtr < Scantable >& in )
2662{
2663 return applyToPol(in, &STPol::invertPhase, Float(0.0));
2664}
2665
2666CountedPtr< Scantable >
2667 STMath::rotateXYPhase( const CountedPtr < Scantable >& in, float phase )
2668{
2669 return applyToPol(in, &STPol::rotatePhase, Float(phase));
2670}
2671
2672CountedPtr< Scantable >
2673 STMath::rotateLinPolPhase( const CountedPtr < Scantable >& in, float phase )
2674{
2675 return applyToPol(in, &STPol::rotateLinPolPhase, Float(phase));
2676}
2677
2678CountedPtr< Scantable > STMath::applyToPol( const CountedPtr<Scantable>& in,
2679 STPol::polOperation fptr,
2680 Float phase )
2681{
2682 CountedPtr< Scantable > out = getScantable(in, false);
2683 Table& tout = out->table();
2684 Block<String> cols(4);
2685 cols[0] = String("SCANNO");
2686 cols[1] = String("BEAMNO");
2687 cols[2] = String("IFNO");
2688 cols[3] = String("CYCLENO");
2689 TableIterator iter(tout, cols);
2690 CountedPtr<STPol> stpol = STPol::getPolClass(out->factories_,
2691 out->getPolType() );
2692 while (!iter.pastEnd()) {
2693 Table t = iter.table();
2694 ArrayColumn<Float> speccol(t, "SPECTRA");
2695 ScalarColumn<uInt> focidcol(t, "FOCUS_ID");
2696 Matrix<Float> pols(speccol.getColumn());
2697 try {
2698 stpol->setSpectra(pols);
2699 Float fang,fhand;
2700 fang = in->focusTable_.getTotalAngle(focidcol(0));
2701 fhand = in->focusTable_.getFeedHand(focidcol(0));
2702 stpol->setPhaseCorrections(fang, fhand);
2703 // use a member function pointer in STPol. This only works on
2704 // the STPol pointer itself, not the Counted Pointer so
2705 // derefernce it.
2706 (&(*(stpol))->*fptr)(phase);
2707 speccol.putColumn(stpol->getSpectra());
2708 } catch (AipsError& e) {
2709 //delete stpol;stpol=0;
2710 throw(e);
2711 }
2712 ++iter;
2713 }
2714 //delete stpol;stpol=0;
2715 return out;
2716}
2717
2718CountedPtr< Scantable >
2719 STMath::swapPolarisations( const CountedPtr< Scantable > & in )
2720{
2721 CountedPtr< Scantable > out = getScantable(in, false);
2722 Table& tout = out->table();
2723 Table t0 = tout(tout.col("POLNO") == 0);
2724 Table t1 = tout(tout.col("POLNO") == 1);
2725 if ( t0.nrow() != t1.nrow() )
2726 throw(AipsError("Inconsistent number of polarisations"));
2727 ArrayColumn<Float> speccol0(t0, "SPECTRA");
2728 ArrayColumn<uChar> flagcol0(t0, "FLAGTRA");
2729 ArrayColumn<Float> speccol1(t1, "SPECTRA");
2730 ArrayColumn<uChar> flagcol1(t1, "FLAGTRA");
2731 Matrix<Float> s0 = speccol0.getColumn();
2732 Matrix<uChar> f0 = flagcol0.getColumn();
2733 speccol0.putColumn(speccol1.getColumn());
2734 flagcol0.putColumn(flagcol1.getColumn());
2735 speccol1.putColumn(s0);
2736 flagcol1.putColumn(f0);
2737 return out;
2738}
2739
2740CountedPtr< Scantable >
2741 STMath::averagePolarisations( const CountedPtr< Scantable > & in,
2742 const std::vector<bool>& mask,
2743 const std::string& weight )
2744{
2745 if (in->npol() < 2 )
2746 throw(AipsError("averagePolarisations can only be applied to two or more"
2747 "polarisations"));
2748 bool insitu = insitu_;
2749 setInsitu(false);
2750 CountedPtr< Scantable > pols = getScantable(in, true);
2751 setInsitu(insitu);
2752 Table& tout = pols->table();
2753 std::string taql = "SELECT FROM $1 WHERE POLNO IN [0,1]";
2754 Table tab = tableCommand(taql, in->table());
2755 if (tab.nrow() == 0 )
2756 throw(AipsError("Could not find any rows with POLNO==0 and POLNO==1"));
2757 TableCopy::copyRows(tout, tab);
2758 TableVector<uInt> vec(tout, "POLNO");
2759 vec = 0;
2760 pols->table_.rwKeywordSet().define("nPol", Int(1));
2761 pols->table_.rwKeywordSet().define("POLTYPE", String("stokes"));
2762 //pols->table_.rwKeywordSet().define("POLTYPE", in->getPolType());
2763 std::vector<CountedPtr<Scantable> > vpols;
2764 vpols.push_back(pols);
2765 CountedPtr< Scantable > out = average(vpols, mask, weight, "SCAN");
2766 return out;
2767}
2768
2769CountedPtr< Scantable >
2770 STMath::averageBeams( const CountedPtr< Scantable > & in,
2771 const std::vector<bool>& mask,
2772 const std::string& weight )
2773{
2774 bool insitu = insitu_;
2775 setInsitu(false);
2776 CountedPtr< Scantable > beams = getScantable(in, false);
2777 setInsitu(insitu);
2778 Table& tout = beams->table();
2779 // give all rows the same BEAMNO
2780 TableVector<uInt> vec(tout, "BEAMNO");
2781 vec = 0;
2782 beams->table_.rwKeywordSet().define("nBeam", Int(1));
2783 std::vector<CountedPtr<Scantable> > vbeams;
2784 vbeams.push_back(beams);
2785 CountedPtr< Scantable > out = average(vbeams, mask, weight, "SCAN");
2786 return out;
2787}
2788
2789
2790CountedPtr< Scantable >
2791 asap::STMath::frequencyAlign( const CountedPtr< Scantable > & in,
2792 const std::string & refTime,
2793 const std::string & method)
2794{
2795 LogIO os( casa::LogOrigin("STMath", "frequencyAlign()", WHERE));
2796 // clone as this is not working insitu
2797 bool insitu = insitu_;
2798 setInsitu(false);
2799 CountedPtr< Scantable > out = getScantable(in, false);
2800 setInsitu(insitu);
2801 Table& tout = out->table();
2802 // Get reference Epoch to time of first row or given String
2803 Unit DAY(String("d"));
2804 MEpoch::Ref epochRef(in->getTimeReference());
2805 MEpoch refEpoch;
2806 if (refTime.length()>0) {
2807 Quantum<Double> qt;
2808 if (MVTime::read(qt,refTime)) {
2809 MVEpoch mv(qt);
2810 refEpoch = MEpoch(mv, epochRef);
2811 } else {
2812 throw(AipsError("Invalid format for Epoch string"));
2813 }
2814 } else {
2815 refEpoch = in->timeCol_(0);
2816 }
2817 MPosition refPos = in->getAntennaPosition();
2818
2819 InterpolateArray1D<Double,Float>::InterpolationMethod interp = stringToIMethod(method);
2820 /*
2821 // Comment from MV.
2822 // the following code has been commented out because different FREQ_IDs have to be aligned together even
2823 // if the frame doesn't change. So far, lack of this check didn't cause any problems.
2824 // test if user frame is different to base frame
2825 if ( in->frequencies().getFrameString(true)
2826 == in->frequencies().getFrameString(false) ) {
2827 throw(AipsError("Can't convert as no output frame has been set"
2828 " (use set_freqframe) or it is aligned already."));
2829 }
2830 */
2831 MFrequency::Types system = in->frequencies().getFrame();
2832 MVTime mvt(refEpoch.getValue());
2833 String epochout = mvt.string(MVTime::YMD) + String(" (") + refEpoch.getRefString() + String(")");
2834 os << "Aligning at reference Epoch " << epochout
2835 << " in frame " << MFrequency::showType(system) << LogIO::POST;
2836 // set up the iterator
2837 Block<String> cols(4);
2838 // select by constant direction
2839 cols[0] = String("SRCNAME");
2840 cols[1] = String("BEAMNO");
2841 // select by IF ( no of channels varies over this )
2842 cols[2] = String("IFNO");
2843 // select by restfrequency
2844 cols[3] = String("MOLECULE_ID");
2845 TableIterator iter(tout, cols);
2846 while ( !iter.pastEnd() ) {
2847 Table t = iter.table();
2848 ROScalarColumn<String> snCol(t, "SRCNAME");
2849 os << "Aligning to position of source '" << snCol(0) << "'" << LogIO::POST;
2850 MDirection::ROScalarColumn dirCol(t, "DIRECTION");
2851 TableIterator fiter(t, "FREQ_ID");
2852 // determine nchan from the first row. This should work as
2853 // we are iterating over BEAMNO and IFNO
2854 // we should have constant direction
2855
2856 ROArrayColumn<Float> sCol(t, "SPECTRA");
2857 const MDirection direction = dirCol(0);
2858 const uInt nchan = sCol(0).nelements();
2859
2860 // skip operations if there is nothing to align
2861 if (fiter.pastEnd()) {
2862 continue;
2863 }
2864
2865 Table ftab = fiter.table();
2866 // align all frequency ids with respect to the first encountered id
2867 ScalarColumn<uInt> freqidCol(ftab, "FREQ_ID");
2868 // get the SpectralCoordinate for the freqid, which we are iterating over
2869 SpectralCoordinate sC = \
2870 in->frequencies().getSpectralCoordinate(freqidCol(0));
2871 FrequencyAligner<Float> fa( sC, nchan, refEpoch,
2872 direction, refPos, system );
2873 // realign the SpectralCoordinate and put into the output Scantable
2874 Vector<String> units(1);
2875 units = String("Hz");
2876 Bool linear=True;
2877 SpectralCoordinate sc2 = fa.alignedSpectralCoordinate(linear);
2878 sc2.setWorldAxisUnits(units);
2879 const uInt id = out->frequencies().addEntry(sc2.referencePixel()[0],
2880 sc2.referenceValue()[0],
2881 sc2.increment()[0]);
2882 while ( !fiter.pastEnd() ) {
2883
2884 ftab = fiter.table();
2885 // spectral coordinate for the current FREQ_ID
2886 ScalarColumn<uInt> freqidCol2(ftab, "FREQ_ID");
2887 sC = in->frequencies().getSpectralCoordinate(freqidCol2(0));
2888 // create the "global" abcissa for alignment with same FREQ_ID
2889 Vector<Double> abc(nchan);
2890 for (uInt i=0; i<nchan; i++) {
2891 Double w;
2892 sC.toWorld(w,Double(i));
2893 abc[i] = w;
2894 }
2895 TableVector<uInt> tvec(ftab, "FREQ_ID");
2896 // assign new frequency id to all rows
2897 tvec = id;
2898 // cache abcissa for same time stamps, so iterate over those
2899 TableIterator timeiter(ftab, "TIME");
2900 while ( !timeiter.pastEnd() ) {
2901 Table tab = timeiter.table();
2902 ArrayColumn<Float> specCol(tab, "SPECTRA");
2903 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
2904 MEpoch::ROScalarColumn timeCol(tab, "TIME");
2905 // use align abcissa cache after the first row
2906 // these rows should be just be POLNO
2907 bool first = true;
2908 for (int i=0; i<int(tab.nrow()); ++i) {
2909 // input values
2910 Vector<uChar> flag = flagCol(i);
2911 Vector<Bool> mask(flag.shape());
2912 Vector<Float> specOut, spec;
2913 spec = specCol(i);
2914 Vector<Bool> maskOut;Vector<uChar> flagOut;
2915 convertArray(mask, flag);
2916 // alignment
2917 Bool ok = fa.align(specOut, maskOut, abc, spec,
2918 mask, timeCol(i), !first,
2919 interp, False);
2920 (void) ok; // unused stop compiler nagging
2921 // back into scantable
2922 flagOut.resize(maskOut.nelements());
2923 convertArray(flagOut, maskOut);
2924 flagCol.put(i, flagOut);
2925 specCol.put(i, specOut);
2926 // start abcissa caching
2927 first = false;
2928 }
2929 // next timestamp
2930 ++timeiter;
2931 }
2932 // next FREQ_ID
2933 ++fiter;
2934 }
2935 // next aligner
2936 ++iter;
2937 }
2938 // set this afterwards to ensure we are doing insitu correctly.
2939 out->frequencies().setFrame(system, true);
2940 return out;
2941}
2942
2943CountedPtr<Scantable>
2944 asap::STMath::convertPolarisation( const CountedPtr<Scantable>& in,
2945 const std::string & newtype )
2946{
2947 if (in->npol() != 2 && in->npol() != 4)
2948 throw(AipsError("Can only convert two or four polarisations."));
2949 if ( in->getPolType() == newtype )
2950 throw(AipsError("No need to convert."));
2951 if ( ! in->selector_.empty() )
2952 throw(AipsError("Can only convert whole scantable. Unset the selection."));
2953 bool insitu = insitu_;
2954 setInsitu(false);
2955 CountedPtr< Scantable > out = getScantable(in, true);
2956 setInsitu(insitu);
2957 Table& tout = out->table();
2958 tout.rwKeywordSet().define("POLTYPE", String(newtype));
2959
2960 Block<String> cols(4);
2961 cols[0] = "SCANNO";
2962 cols[1] = "CYCLENO";
2963 cols[2] = "BEAMNO";
2964 cols[3] = "IFNO";
2965 TableIterator it(in->originalTable_, cols);
2966 String basetype = in->getPolType();
2967 STPol* stpol = STPol::getPolClass(in->factories_, basetype);
2968 try {
2969 while ( !it.pastEnd() ) {
2970 Table tab = it.table();
2971 uInt row = tab.rowNumbers()[0];
2972 stpol->setSpectra(in->getPolMatrix(row));
2973 Float fang,fhand;
2974 fang = in->focusTable_.getTotalAngle(in->mfocusidCol_(row));
2975 fhand = in->focusTable_.getFeedHand(in->mfocusidCol_(row));
2976 stpol->setPhaseCorrections(fang, fhand);
2977 Int npolout = 0;
2978 for (uInt i=0; i<tab.nrow(); ++i) {
2979 Vector<Float> outvec = stpol->getSpectrum(i, newtype);
2980 if ( outvec.nelements() > 0 ) {
2981 tout.addRow();
2982 TableCopy::copyRows(tout, tab, tout.nrow()-1, 0, 1);
2983 ArrayColumn<Float> sCol(tout,"SPECTRA");
2984 ScalarColumn<uInt> pCol(tout,"POLNO");
2985 sCol.put(tout.nrow()-1 ,outvec);
2986 pCol.put(tout.nrow()-1 ,uInt(npolout));
2987 npolout++;
2988 }
2989 }
2990 tout.rwKeywordSet().define("nPol", npolout);
2991 ++it;
2992 }
2993 } catch (AipsError& e) {
2994 delete stpol;
2995 throw(e);
2996 }
2997 delete stpol;
2998 return out;
2999}
3000
3001CountedPtr< Scantable >
3002 asap::STMath::mxExtract( const CountedPtr< Scantable > & in,
3003 const std::string & scantype )
3004{
3005 bool insitu = insitu_;
3006 setInsitu(false);
3007 CountedPtr< Scantable > out = getScantable(in, true);
3008 setInsitu(insitu);
3009 Table& tout = out->table();
3010 std::string taql = "SELECT FROM $1 WHERE BEAMNO != REFBEAMNO";
3011 if (scantype == "on") {
3012 taql = "SELECT FROM $1 WHERE BEAMNO == REFBEAMNO";
3013 }
3014 Table tab = tableCommand(taql, in->table());
3015 TableCopy::copyRows(tout, tab);
3016 if (scantype == "on") {
3017 // re-index SCANNO to 0
3018 TableVector<uInt> vec(tout, "SCANNO");
3019 vec = 0;
3020 }
3021 return out;
3022}
3023
3024std::vector<float>
3025 asap::STMath::fft( const casa::CountedPtr< Scantable > & in,
3026 const std::vector<int>& whichrow,
3027 bool getRealImag )
3028{
3029 std::vector<float> res;
3030 Table tab = in->table();
3031 std::vector<bool> mask;
3032
3033 if (whichrow.size() < 1) { // for all rows (by default)
3034 int nrow = int(tab.nrow());
3035 for (int i = 0; i < nrow; ++i) {
3036 res = in->execFFT(i, mask, getRealImag);
3037 }
3038 } else { // for specified rows
3039 for (uInt i = 0; i < whichrow.size(); ++i) {
3040 res = in->execFFT(i, mask, getRealImag);
3041 }
3042 }
3043
3044 return res;
3045}
3046
3047
3048CountedPtr<Scantable>
3049 asap::STMath::lagFlag( const CountedPtr<Scantable>& in,
3050 double start, double end,
3051 const std::string& mode )
3052{
3053 CountedPtr<Scantable> out = getScantable(in, false);
3054 Table& tout = out->table();
3055 TableIterator iter(tout, "FREQ_ID");
3056 FFTServer<Float,Complex> ffts;
3057
3058 while ( !iter.pastEnd() ) {
3059 Table tab = iter.table();
3060 Double rp,rv,inc;
3061 ROTableRow row(tab);
3062 const TableRecord& rec = row.get(0);
3063 uInt freqid = rec.asuInt("FREQ_ID");
3064 out->frequencies().getEntry(rp, rv, inc, freqid);
3065 ArrayColumn<Float> specCol(tab, "SPECTRA");
3066 ArrayColumn<uChar> flagCol(tab, "FLAGTRA");
3067
3068 for (int i=0; i<int(tab.nrow()); ++i) {
3069 Vector<Float> spec = specCol(i);
3070 Vector<uChar> flag = flagCol(i);
3071 std::vector<bool> mask;
3072 for (uInt j = 0; j < flag.nelements(); ++j) {
3073 mask.push_back(!(flag[j]>0));
3074 }
3075 mathutil::doZeroOrderInterpolation(spec, mask);
3076
3077 Vector<Complex> lags;
3078 ffts.fft0(lags, spec);
3079
3080 Int lag0(start+0.5);
3081 Int lag1(end+0.5);
3082 if (mode == "frequency") {
3083 lag0 = Int(spec.nelements()*abs(inc)/(start)+0.5);
3084 lag1 = Int(spec.nelements()*abs(inc)/(end)+0.5);
3085 }
3086 Int lstart = max(0, lag0);
3087 Int lend = min(Int(lags.nelements()-1), lag1);
3088 if (lstart == lend) {
3089 lags[lstart] = Complex(0.0);
3090 } else {
3091 if (lstart > lend) {
3092 Int tmp = lend;
3093 lend = lstart;
3094 lstart = tmp;
3095 }
3096 for (int j=lstart; j <=lend ;++j) {
3097 lags[j] = Complex(0.0);
3098 }
3099 }
3100
3101 ffts.fft0(spec, lags);
3102
3103 specCol.put(i, spec);
3104 }
3105 ++iter;
3106 }
3107 return out;
3108}
3109
3110// Averaging spectra with different channel/resolution
3111CountedPtr<Scantable>
3112STMath::new_average( const std::vector<CountedPtr<Scantable> >& in,
3113 const bool& compel,
3114 const std::vector<bool>& mask,
3115 const std::string& weight,
3116 const std::string& avmode )
3117 throw ( casa::AipsError )
3118{
3119 LogIO os( LogOrigin( "STMath", "new_average()", WHERE ) ) ;
3120 if ( avmode == "SCAN" && in.size() != 1 )
3121 throw(AipsError("Can't perform 'SCAN' averaging on multiple tables.\n"
3122 "Use merge first."));
3123
3124 CountedPtr<Scantable> out ; // processed result
3125 if ( compel ) {
3126 std::vector< CountedPtr<Scantable> > newin ; // input for average process
3127 uInt insize = in.size() ; // number of input scantables
3128
3129 // setup newin
3130 bool oldInsitu = insitu_ ;
3131 setInsitu( false ) ;
3132 newin.resize( insize ) ;
3133 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3134 newin[itable] = getScantable( in[itable], false ) ;
3135 }
3136 setInsitu( oldInsitu ) ;
3137
3138 // warning
3139 os << "Average spectra with different spectral resolution" << LogIO::POST ;
3140
3141 // temporarily set coordinfo
3142 vector<string> oldinfo( insize ) ;
3143 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3144 vector<string> coordinfo = in[itable]->getCoordInfo() ;
3145 oldinfo[itable] = coordinfo[0] ;
3146 coordinfo[0] = "Hz" ;
3147 newin[itable]->setCoordInfo( coordinfo ) ;
3148 }
3149
3150 ostringstream oss ;
3151
3152 // check IF frequency coverage
3153 // freqid: list of FREQ_ID, which is used, in each table
3154 // iffreq: list of minimum and maximum frequency for each FREQ_ID in
3155 // each table
3156 // freqid[insize][numIF]
3157 // freqid: [[id00, id01, ...],
3158 // [id10, id11, ...],
3159 // ...
3160 // [idn0, idn1, ...]]
3161 // iffreq[insize][numIF*2]
3162 // iffreq: [[min_id00, max_id00, min_id01, max_id01, ...],
3163 // [min_id10, max_id10, min_id11, max_id11, ...],
3164 // ...
3165 // [min_idn0, max_idn0, min_idn1, max_idn1, ...]]
3166 //os << "Check IF settings in each table" << LogIO::POST ;
3167 vector< vector<uInt> > freqid( insize );
3168 vector< vector<double> > iffreq( insize ) ;
3169 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3170 Vector<uInt> freqIds = newin[itable]->mfreqidCol_.getColumn() ;
3171 vector<uInt> uniqueFreqId = newin[itable]->getNumbers(newin[itable]->mfreqidCol_) ;
3172 for ( vector<uInt>::iterator i = uniqueFreqId.begin() ;
3173 i != uniqueFreqId.end() ; i++ ) {
3174 //os << "itable = " << itable << ": IF " << id << " is included in the list" << LogIO::POST ;
3175 uInt target = 0 ;
3176 while ( freqIds[target] != *i )
3177 target++ ;
3178 vector<double> abcissa = newin[itable]->getAbcissa( target ) ;
3179 freqid[itable].push_back( *i ) ;
3180 double incr = abs( abcissa[1] - abcissa[0] ) ;
3181 iffreq[itable].push_back( (*min_element(abcissa.begin(),abcissa.end()))-0.5*incr ) ;
3182 iffreq[itable].push_back( (*max_element(abcissa.begin(),abcissa.end()))+0.5*incr ) ;
3183 }
3184 }
3185
3186 // debug
3187// os << "IF settings summary:" << endl ;
3188// for ( uInt i = 0 ; i < freqid.size() ; i++ ) {
3189// os << " Table" << i << endl ;
3190// for ( uInt j = 0 ; j < freqid[i].size() ; j++ ) {
3191// os << " id = " << freqid[i][j] << " (min,max) = (" << iffreq[i][2*j] << "," << iffreq[i][2*j+1] << ")" << endl ;
3192// }
3193// }
3194// os << endl ;
3195// os.post() ;
3196
3197 // IF grouping based on their frequency coverage
3198 // ifgrp: number of member in each IF group
3199 // ifgrp[numgrp]
3200 // ifgrp: [n0, n1, ...]
3201 //os << "IF grouping based on their frequency coverage" << LogIO::POST ;
3202
3203 // parameter for IF grouping
3204 // groupmode = OR retrieve all region
3205 // AND only retrieve overlaped region
3206 //string groupmode = "AND" ;
3207 string groupmode = "OR" ;
3208 uInt sizecr = 0 ;
3209 if ( groupmode == "AND" )
3210 sizecr = 1 ;
3211 else if ( groupmode == "OR" )
3212 sizecr = 0 ;
3213
3214 vector<double> sortedfreq ;
3215 for ( uInt i = 0 ; i < iffreq.size() ; i++ ) {
3216 for ( uInt j = 0 ; j < iffreq[i].size() ; j++ ) {
3217 if ( count( sortedfreq.begin(), sortedfreq.end(), iffreq[i][j] ) == 0 )
3218 sortedfreq.push_back( iffreq[i][j] ) ;
3219 }
3220 }
3221 sort( sortedfreq.begin(), sortedfreq.end() ) ;
3222 vector<uInt> ifgrp( sortedfreq.size()-1, 0 ) ;
3223 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3224 for ( uInt iif = 0 ; iif < freqid[itable].size() ; iif++ ) {
3225 double range0 = iffreq[itable][2*iif] ;
3226 double range1 = iffreq[itable][2*iif+1] ;
3227 for ( uInt j = 0 ; j < sortedfreq.size()-1 ; j++ ) {
3228 double fmin = max( range0, sortedfreq[j] ) ;
3229 double fmax = min( range1, sortedfreq[j+1] ) ;
3230 if ( fmin < fmax ) {
3231 ifgrp[j]++ ;
3232 }
3233 }
3234 }
3235 }
3236
3237 // Grouping continuous IF groups (without frequency gap)
3238 // freqgrp: list of IF group indexes in each frequency group
3239 // freqgrp[numgrp][nummember]
3240 // freqgrp: [[ifgrp00, ifgrp01, ifgrp02, ...],
3241 // [ifgrp10, ifgrp11, ifgrp12, ...],
3242 // ...
3243 // [ifgrpn0, ifgrpn1, ifgrpn2, ...]]
3244 // grprange[2*numgrp]
3245 // grprange: [fmin0,fmax0,fmin1,fmax1,...]
3246 vector< vector<uInt> > freqgrp ;
3247 vector<double> grprange ;
3248 vector<uInt> grpedge ;
3249 for ( uInt igrp = 0 ; igrp < ifgrp.size() ; igrp++ ) {
3250 if ( ifgrp[igrp] <= sizecr ) {
3251 grpedge.push_back( igrp ) ;
3252 }
3253 }
3254 grpedge.push_back( ifgrp.size() ) ;
3255 uInt itmp = 0 ;
3256 for ( uInt i = 0 ; i < grpedge.size() ; i++ ) {
3257 int n = grpedge[i] - itmp ;
3258 if ( n > 0 ) {
3259 vector<uInt> members( n ) ;
3260 for ( int j = 0 ; j < n ; j++ ) {
3261 members[j] = itmp+j ;
3262 }
3263 freqgrp.push_back( members ) ;
3264 grprange.push_back( sortedfreq[itmp] ) ;
3265 grprange.push_back( sortedfreq[grpedge[i]] ) ;
3266 }
3267 itmp += n + 1 ;
3268 }
3269
3270 // print frequency group
3271 oss.str("") ;
3272 oss << "Frequency Group summary: " << endl ;
3273 oss << " GROUP_ID: [FREQ_MIN, FREQ_MAX]" << endl ;
3274 for ( uInt i = 0 ; i < freqgrp.size() ; i++ ) {
3275 oss << " GROUP " << setw( 2 ) << i << ": [" << grprange[2*i] << "," << grprange[2*i+1] << "]" ;
3276 oss << endl ;
3277 }
3278 oss << endl ;
3279 os << oss.str() << LogIO::POST ;
3280
3281 // groups: list of frequency group index whose frequency range overlaps
3282 // with that of each table and IF
3283 // groups[numtable][numIF]
3284 // groups: [[grpx, grpy,...],
3285 // [grpa, grpb,...],
3286 // ...
3287 // [grpk, grpm,...]]
3288 vector< vector<uInt> > groups( insize ) ;
3289 for ( uInt i = 0 ; i < insize ; i++ ) {
3290 groups[i].resize( freqid[i].size() ) ;
3291 }
3292 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3293 for ( uInt ifreq = 0 ; ifreq < freqid[itable].size() ; ifreq++ ) {
3294 double minf = iffreq[itable][2*ifreq] ;
3295 uInt groupid ;
3296 for ( uInt igrp = 0 ; igrp < freqgrp.size() ; igrp++ ) {
3297 vector<uInt> memberlist = freqgrp[igrp] ;
3298 if ( (minf >= grprange[2*igrp]) && (minf <= grprange[2*igrp+1]) ) {
3299 groupid = igrp ;
3300 break ;
3301 }
3302 }
3303 groups[itable][ifreq] = groupid ;
3304 }
3305 }
3306
3307
3308 // print membership
3309 oss.str("") ;
3310 for ( uInt i = 0 ; i < insize ; i++ ) {
3311 oss << "Table " << i << endl ;
3312 for ( uInt j = 0 ; j < groups[i].size() ; j++ ) {
3313 oss << " FREQ_ID " << setw( 2 ) << freqid[i][j] << ": " ;
3314 oss << setw( 2 ) << groups[i][j] ;
3315 oss << endl ;
3316 }
3317 }
3318 os << oss.str() << LogIO::POST ;
3319
3320 // reset SCANNO and IFNO/FREQ_ID: IF is reset by the result of sortation
3321 //os << "All IF number is set to IF group index" << LogIO::POST ;
3322 // reset SCANNO only when avmode != "SCAN"
3323 if ( avmode != "SCAN" ) {
3324 os << "All scan number is set to 0" << LogIO::POST ;
3325 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3326 uInt nrow = newin[itable]->nrow() ;
3327 Vector<uInt> resetScan( nrow, 0 ) ;
3328 newin[itable]->scanCol_.putColumn( resetScan ) ;
3329 }
3330 }
3331
3332 // reset spectra and flagtra: align spectral resolution
3333 //os << "Align spectral resolution" << LogIO::POST ;
3334 // gmaxdnu: the coarsest frequency resolution in the frequency group
3335 // gminfreq: lower frequency edge of the frequency group
3336 // gnchan: number of channels for the frequency group
3337 vector<double> gmaxdnu( freqgrp.size(), 0.0 ) ;
3338 vector<double> gminfreq( freqgrp.size() ) ;
3339 vector<double> gnchan( freqgrp.size() ) ;
3340 for ( uInt i = 0 ; i < insize ; i++ ) {
3341 vector<uInt> members = groups[i] ;
3342 for ( uInt j = 0 ; j < members.size() ; j++ ) {
3343 uInt groupid = members[j] ;
3344 Double rp,rv,ic ;
3345 newin[i]->frequencies().getEntry( rp, rv, ic, j ) ;
3346 if ( abs(ic) > abs(gmaxdnu[groupid]) )
3347 gmaxdnu[groupid] = ic ;
3348 }
3349 }
3350 for ( uInt igrp = 0 ; igrp < freqgrp.size() ; igrp++ ) {
3351 gminfreq[igrp] = grprange[2*igrp] ;
3352 double maxfreq = grprange[2*igrp+1] ;
3353 gnchan[igrp] = (int)(abs((maxfreq-gminfreq[igrp])/gmaxdnu[igrp])+0.9) ;
3354 }
3355
3356 // regrid spectral data and update frequency info
3357 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3358 Vector<uInt> oldFreqId = newin[itable]->mfreqidCol_.getColumn() ;
3359 Vector<uInt> newFreqId( oldFreqId.nelements() ) ;
3360
3361 // update MAIN
3362 for ( uInt irow = 0 ; irow < newin[itable]->nrow() ; irow++ ) {
3363 uInt groupid = groups[itable][oldFreqId[irow]] ;
3364 newFreqId[irow] = groupid ;
3365 newin[itable]->regridChannel( gnchan[groupid],
3366 gmaxdnu[groupid],
3367 gminfreq[groupid],
3368 irow ) ;
3369 }
3370 newin[itable]->mfreqidCol_.putColumn( newFreqId ) ;
3371 newin[itable]->ifCol_.putColumn( newFreqId ) ;
3372
3373 // update FREQUENCIES
3374 Table tab = newin[itable]->frequencies().table() ;
3375 ScalarColumn<uInt> fIdCol( tab, "ID" ) ;
3376 ScalarColumn<Double> fRefPixCol( tab, "REFPIX" ) ;
3377 ScalarColumn<Double> fRefValCol( tab, "REFVAL" ) ;
3378 ScalarColumn<Double> fIncrCol( tab, "INCREMENT" ) ;
3379 if ( freqgrp.size() > tab.nrow() ) {
3380 tab.addRow( freqgrp.size()-tab.nrow() ) ;
3381 }
3382 for ( uInt irow = 0 ; irow < freqgrp.size() ; irow++ ) {
3383 Double refval = gminfreq[irow] + 0.5 * abs(gmaxdnu[irow]) ;
3384 Double refpix = (gmaxdnu[irow] > 0.0) ? 0 : gnchan[irow]-1 ;
3385 Double increment = gmaxdnu[irow] ;
3386 fIdCol.put( irow, irow ) ;
3387 fRefPixCol.put( irow, refpix ) ;
3388 fRefValCol.put( irow, refval ) ;
3389 fIncrCol.put( irow, increment ) ;
3390 }
3391 }
3392
3393 // set back coordinfo
3394 for ( uInt itable = 0 ; itable < insize ; itable++ ) {
3395 vector<string> coordinfo = newin[itable]->getCoordInfo() ;
3396 coordinfo[0] = oldinfo[itable] ;
3397 newin[itable]->setCoordInfo( coordinfo ) ;
3398 }
3399
3400 // average
3401 out = average( newin, mask, weight, avmode ) ;
3402 }
3403 else {
3404 // simple average
3405 out = average( in, mask, weight, avmode ) ;
3406 }
3407
3408 return out;
3409}
3410
3411CountedPtr<Scantable> STMath::cwcal( const CountedPtr<Scantable>& s,
3412 const String calmode,
3413 const String antname )
3414{
3415 // frequency switch
3416 if ( calmode == "fs" ) {
3417 return cwcalfs( s, antname ) ;
3418 }
3419 else {
3420 vector<bool> masks = s->getMask( 0 ) ;
3421 vector<int> types ;
3422
3423 // save original table selection
3424 Table torg = s->table_ ;
3425
3426 // sky scan
3427 bool insitu = insitu_ ;
3428 insitu_ = false ;
3429 // share calibration scans before average with out
3430 CountedPtr<Scantable> out = getScantable( s, true ) ;
3431 insitu_ = insitu ;
3432 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::SKY ) ;
3433 out->attach() ;
3434 CountedPtr<Scantable> asky = averageWithinSession( out,
3435 masks,
3436 "TINT" ) ;
3437 // hot scan
3438 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::HOT ) ;
3439 out->attach() ;
3440 CountedPtr<Scantable> ahot = averageWithinSession( out,
3441 masks,
3442 "TINT" ) ;
3443 // cold scan
3444 CountedPtr<Scantable> acold ;
3445// out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::COLD ) ;
3446// out->attach() ;
3447// CountedPtr<Scantable> acold = averageWithinSession( out,
3448// masks,
3449// "TINT" ) ;
3450
3451 // off scan
3452 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSOFF ) ;
3453 out->attach() ;
3454 CountedPtr<Scantable> aoff = averageWithinSession( out,
3455 masks,
3456 "TINT" ) ;
3457
3458 // on scan
3459 s->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSON ) ;
3460 s->attach() ;
3461 out->table_ = out->originalTable_ ;
3462 out->attach() ;
3463 out->table().addRow( s->nrow() ) ;
3464 copyRows( out->table(), s->table(), 0, 0, s->nrow(), False, True, False ) ;
3465
3466 // process each on scan
3467 STSelector sel ;
3468 vector<string> cols( 3 ) ;
3469 cols[0] = "BEAMNO" ;
3470 cols[1] = "POLNO" ;
3471 cols[2] = "IFNO" ;
3472 STIdxIter *iter = new STIdxIterAcc( out, cols ) ;
3473 while ( !iter->pastEnd() ) {
3474 Vector<uInt> ids = iter->current() ;
3475 stringstream ss ;
3476 ss << "SELECT FROM $1 WHERE "
3477 << "BEAMNO==" << ids[0] << "&&"
3478 << "POLNO==" << ids[1] << "&&"
3479 << "IFNO==" << ids[2] ;
3480 //cout << "TaQL string: " << ss.str() << endl ;
3481 sel.setTaQL( ss.str() ) ;
3482 aoff->setSelection( sel ) ;
3483 ahot->setSelection( sel ) ;
3484 asky->setSelection( sel ) ;
3485 Vector<uInt> rows = iter->getRows( SHARE ) ;
3486 // out should be an exact copy of s except that SPECTRA column is empty
3487 calibrateCW( out, s, aoff, asky, ahot, acold, rows, antname ) ;
3488 aoff->unsetSelection() ;
3489 ahot->unsetSelection() ;
3490 asky->unsetSelection() ;
3491 sel.reset() ;
3492 iter->next() ;
3493 }
3494 delete iter ;
3495 s->table_ = torg ;
3496 s->attach() ;
3497
3498 // flux unit
3499 out->setFluxUnit( "K" ) ;
3500
3501 return out ;
3502 }
3503}
3504
3505CountedPtr<Scantable> STMath::almacal( const CountedPtr<Scantable>& s,
3506 const String calmode )
3507{
3508 // frequency switch
3509 if ( calmode == "fs" ) {
3510 return almacalfs( s ) ;
3511 }
3512 else {
3513// double t0, t1 ;
3514// t0 = mathutil::gettimeofday_sec() ;
3515 vector<bool> masks = s->getMask( 0 ) ;
3516
3517 // save original table selection
3518 Table torg = s->table_ ;
3519
3520 // off scan
3521 // TODO 2010/01/08 TN
3522 // Grouping by time should be needed before averaging.
3523 // Each group must have own unique SCANNO (should be renumbered).
3524 // See PIPELINE/SDCalibration.py
3525 bool insitu = insitu_ ;
3526 insitu_ = false ;
3527 // share off scan before average with out
3528 CountedPtr<Scantable> out = getScantable( s, true ) ;
3529 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSOFF ) ;
3530 out->attach() ;
3531 insitu_ = insitu ;
3532 CountedPtr<Scantable> aoff = averageWithinSession( out,
3533 masks,
3534 "TINT" ) ;
3535
3536 // on scan
3537// t0 = mathutil::gettimeofday_sec() ;
3538 s->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSON ) ;
3539 s->attach() ;
3540 out->table_ = out->originalTable_ ;
3541 out->attach() ;
3542 out->table().addRow( s->nrow() ) ;
3543 copyRows( out->table(), s->table(), 0, 0, s->nrow(), False ) ;
3544// t1 = mathutil::gettimeofday_sec() ;
3545// cout << "elapsed time for preparing output table: " << t1-t0 << " sec" << endl ;
3546
3547 // process each on scan
3548// t0 = mathutil::gettimeofday_sec() ;
3549
3550 // using STIdxIterAcc
3551 vector<string> cols( 3 ) ;
3552 cols[0] = "BEAMNO" ;
3553 cols[1] = "POLNO" ;
3554 cols[2] = "IFNO" ;
3555 STIdxIter *iter = new STIdxIterAcc( out, cols ) ;
3556 STSelector sel ;
3557 while ( !iter->pastEnd() ) {
3558 Vector<uInt> ids = iter->current() ;
3559 stringstream ss ;
3560 ss << "SELECT FROM $1 WHERE "
3561 << "BEAMNO==" << ids[0] << "&&"
3562 << "POLNO==" << ids[1] << "&&"
3563 << "IFNO==" << ids[2] ;
3564 //cout << "TaQL string: " << ss.str() << endl ;
3565 sel.setTaQL( ss.str() ) ;
3566 aoff->setSelection( sel ) ;
3567 Vector<uInt> rows = iter->getRows( SHARE ) ;
3568 // out should be an exact copy of s except that SPECTRA column is empty
3569 calibrateALMA( out, s, aoff, rows ) ;
3570 aoff->unsetSelection() ;
3571 sel.reset() ;
3572 iter->next() ;
3573 }
3574 delete iter ;
3575 s->table_ = torg ;
3576 s->attach() ;
3577
3578// t1 = mathutil::gettimeofday_sec() ;
3579// cout << "elapsed time for calibration: " << t1-t0 << " sec" << endl ;
3580
3581 // flux unit
3582 out->setFluxUnit( "K" ) ;
3583
3584 return out ;
3585 }
3586}
3587
3588CountedPtr<Scantable> STMath::cwcalfs( const CountedPtr<Scantable>& s,
3589 const String antname )
3590{
3591 vector<int> types ;
3592
3593 // APEX calibration mode
3594 int apexcalmode = 1 ;
3595
3596 if ( antname.find( "APEX" ) != string::npos ) {
3597 // check if off scan exists or not
3598 STSelector sel = STSelector() ;
3599 //sel.setName( offstr1 ) ;
3600 types.push_back( SrcType::FLOOFF ) ;
3601 sel.setTypes( types ) ;
3602 try {
3603 s->setSelection( sel ) ;
3604 }
3605 catch ( AipsError &e ) {
3606 apexcalmode = 0 ;
3607 }
3608 sel.reset() ;
3609 }
3610 s->unsetSelection() ;
3611 types.clear() ;
3612
3613 vector<bool> masks = s->getMask( 0 ) ;
3614 CountedPtr<Scantable> ssig, sref ;
3615 //CountedPtr<Scantable> out ;
3616 bool insitu = insitu_ ;
3617 insitu_ = False ;
3618 CountedPtr<Scantable> out = getScantable( s, true ) ;
3619 insitu_ = insitu ;
3620
3621 if ( antname.find( "APEX" ) != string::npos ) {
3622 // APEX calibration
3623 // sky scan
3624 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FLOSKY ) ;
3625 out->attach() ;
3626 CountedPtr<Scantable> askylo = averageWithinSession( out,
3627 masks,
3628 "TINT" ) ;
3629 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FHISKY ) ;
3630 out->attach() ;
3631 CountedPtr<Scantable> askyhi = averageWithinSession( out,
3632 masks,
3633 "TINT" ) ;
3634
3635 // hot scan
3636 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FLOHOT ) ;
3637 out->attach() ;
3638 CountedPtr<Scantable> ahotlo = averageWithinSession( out,
3639 masks,
3640 "TINT" ) ;
3641 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FHIHOT ) ;
3642 out->attach() ;
3643 CountedPtr<Scantable> ahothi = averageWithinSession( out,
3644 masks,
3645 "TINT" ) ;
3646
3647 // cold scan
3648 CountedPtr<Scantable> acoldlo, acoldhi ;
3649// out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FLOCOLD ) ;
3650// out->attach() ;
3651// CountedPtr<Scantable> acoldlo = averageWithinSession( out,
3652// masks,
3653// "TINT" ) ;
3654// out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FHICOLD ) ;
3655// out->attach() ;
3656// CountedPtr<Scantable> acoldhi = averageWithinSession( out,
3657// masks,
3658// "TINT" ) ;
3659
3660 // ref scan
3661 insitu_ = false ;
3662 sref = getScantable( s, true ) ;
3663 CountedPtr<Scantable> rref = getScantable( s, true ) ;
3664 insitu_ = insitu ;
3665 rref->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FSLO ) ;
3666 rref->attach() ;
3667 copyRows( sref->table_, rref->table_, 0, 0, rref->nrow(), False, True, False ) ;
3668
3669 // sig scan
3670 insitu_ = false ;
3671 ssig = getScantable( s, true ) ;
3672 CountedPtr<Scantable> rsig = getScantable( s, true ) ;
3673 insitu_ = insitu ;
3674 rsig->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FSHI ) ;
3675 rsig->attach() ;
3676 copyRows( ssig->table_, rsig->table_, 0, 0, rsig->nrow(), False, True, False ) ;
3677
3678 if ( apexcalmode == 0 ) {
3679 // using STIdxIterAcc
3680 vector<string> cols( 3 ) ;
3681 cols[0] = "BEAMNO" ;
3682 cols[1] = "POLNO" ;
3683 cols[2] = "IFNO" ;
3684 STIdxIter *iter = new STIdxIterAcc( ssig, cols ) ;
3685 STSelector sel ;
3686 vector< CountedPtr<Scantable> > on( 2 ) ;
3687 on[0] = rsig ;
3688 on[1] = rref ;
3689 vector< CountedPtr<Scantable> > sky( 2 ) ;
3690 sky[0] = askylo ;
3691 sky[1] = askyhi ;
3692 vector< CountedPtr<Scantable> > hot( 2 ) ;
3693 hot[0] = ahotlo ;
3694 hot[1] = ahothi ;
3695 vector< CountedPtr<Scantable> > cold( 2 ) ;
3696 while ( !iter->pastEnd() ) {
3697 Vector<uInt> ids = iter->current() ;
3698 stringstream ss ;
3699 ss << "SELECT FROM $1 WHERE "
3700 << "BEAMNO==" << ids[0] << "&&"
3701 << "POLNO==" << ids[1] << "&&"
3702 << "IFNO==" << ids[2] ;
3703 //cout << "TaQL string: " << ss.str() << endl ;
3704 sel.setTaQL( ss.str() ) ;
3705 sky[0]->setSelection( sel ) ;
3706 sky[1]->setSelection( sel ) ;
3707 hot[0]->setSelection( sel ) ;
3708 hot[1]->setSelection( sel ) ;
3709 Vector<uInt> rows = iter->getRows( SHARE ) ;
3710 calibrateAPEXFS( ssig, sref, on, sky, hot, cold, rows ) ;
3711 sky[0]->unsetSelection() ;
3712 sky[1]->unsetSelection() ;
3713 hot[0]->unsetSelection() ;
3714 hot[1]->unsetSelection() ;
3715 sel.reset() ;
3716 iter->next() ;
3717 }
3718 delete iter ;
3719
3720 }
3721 else if ( apexcalmode == 1 ) {
3722 // APEX fs data with off scan
3723 // off scan
3724 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FLOOFF ) ;
3725 out->attach() ;
3726 CountedPtr<Scantable> aofflo = averageWithinSession( out,
3727 masks,
3728 "TINT" ) ;
3729 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::FHIOFF ) ;
3730 out->attach() ;
3731 CountedPtr<Scantable> aoffhi = averageWithinSession( out,
3732 masks,
3733 "TINT" ) ;
3734
3735 // process each sig and ref scan
3736// STSelector sel ;
3737 vector<string> cols( 3 ) ;
3738 cols[0] = "BEAMNO" ;
3739 cols[1] = "POLNO" ;
3740 cols[2] = "IFNO" ;
3741 STIdxIter *iter = new STIdxIterAcc( ssig, cols ) ;
3742 STSelector sel ;
3743 while ( !iter->pastEnd() ) {
3744 Vector<uInt> ids = iter->current() ;
3745 stringstream ss ;
3746 ss << "SELECT FROM $1 WHERE "
3747 << "BEAMNO==" << ids[0] << "&&"
3748 << "POLNO==" << ids[1] << "&&"
3749 << "IFNO==" << ids[2] ;
3750 //cout << "TaQL string: " << ss.str() << endl ;
3751 sel.setTaQL( ss.str() ) ;
3752 aofflo->setSelection( sel ) ;
3753 ahotlo->setSelection( sel ) ;
3754 askylo->setSelection( sel ) ;
3755 Vector<uInt> rows = iter->getRows( SHARE ) ;
3756 calibrateCW( ssig, rsig, aofflo, askylo, ahotlo, acoldlo, rows, antname ) ;
3757 aofflo->unsetSelection() ;
3758 ahotlo->unsetSelection() ;
3759 askylo->unsetSelection() ;
3760 sel.reset() ;
3761 iter->next() ;
3762 }
3763 delete iter ;
3764 iter = new STIdxIterAcc( sref, cols ) ;
3765 while ( !iter->pastEnd() ) {
3766 Vector<uInt> ids = iter->current() ;
3767 stringstream ss ;
3768 ss << "SELECT FROM $1 WHERE "
3769 << "BEAMNO==" << ids[0] << "&&"
3770 << "POLNO==" << ids[1] << "&&"
3771 << "IFNO==" << ids[2] ;
3772 //cout << "TaQL string: " << ss.str() << endl ;
3773 sel.setTaQL( ss.str() ) ;
3774 aoffhi->setSelection( sel ) ;
3775 ahothi->setSelection( sel ) ;
3776 askyhi->setSelection( sel ) ;
3777 Vector<uInt> rows = iter->getRows( SHARE ) ;
3778 calibrateCW( sref, rref, aoffhi, askyhi, ahothi, acoldhi, rows, antname ) ;
3779 aoffhi->unsetSelection() ;
3780 ahothi->unsetSelection() ;
3781 askyhi->unsetSelection() ;
3782 sel.reset() ;
3783 iter->next() ;
3784 }
3785 delete iter ;
3786 }
3787 }
3788 else {
3789 // non-APEX fs data
3790 // sky scan
3791 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::SKY ) ;
3792 out->attach() ;
3793 CountedPtr<Scantable> asky = averageWithinSession( out,
3794 masks,
3795 "TINT" ) ;
3796 STSelector sel = STSelector() ;
3797
3798 // hot scan
3799 out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::HOT ) ;
3800 out->attach() ;
3801 CountedPtr<Scantable> ahot = averageWithinSession( out,
3802 masks,
3803 "TINT" ) ;
3804
3805 // cold scan
3806 CountedPtr<Scantable> acold ;
3807// out->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::COLD ) ;
3808// out->attach() ;
3809// CountedPtr<Scantable> acold = averageWithinSession( out,
3810// masks,
3811// "TINT" ) ;
3812
3813 // ref scan
3814 bool insitu = insitu_ ;
3815 insitu_ = false ;
3816 sref = getScantable( s, true ) ;
3817 CountedPtr<Scantable> rref = getScantable( s, true ) ;
3818 insitu_ = insitu ;
3819 rref->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSOFF ) ;
3820 rref->attach() ;
3821 copyRows( sref->table_, rref->table_, 0, 0, rref->nrow(), False, True, False ) ;
3822
3823 // sig scan
3824 insitu_ = false ;
3825 ssig = getScantable( s, true ) ;
3826 CountedPtr<Scantable> rsig = getScantable( s, true ) ;
3827 insitu_ = insitu ;
3828 rsig->table_ = s->table_( s->table_.col("SRCTYPE") == (Int)SrcType::PSON ) ;
3829 rsig->attach() ;
3830 copyRows( ssig->table_, rsig->table_, 0, 0, rsig->nrow(), False, True, False ) ;
3831
3832 // process each sig and ref scan
3833 vector<string> cols( 3 ) ;
3834 cols[0] = "BEAMNO" ;
3835 cols[1] = "POLNO" ;
3836 cols[2] = "IFNO" ;
3837 STIdxIter *iter = new STIdxIterAcc( ssig, cols ) ;
3838 while ( !iter->pastEnd() ) {
3839 Vector<uInt> ids = iter->current() ;
3840 stringstream ss ;
3841 ss << "SELECT FROM $1 WHERE "
3842 << "BEAMNO==" << ids[0] << "&&"
3843 << "POLNO==" << ids[1] << "&&"
3844 << "IFNO==" << ids[2] ;
3845 //cout << "TaQL string: " << ss.str() << endl ;
3846 sel.setTaQL( ss.str() ) ;
3847 ahot->setSelection( sel ) ;
3848 asky->setSelection( sel ) ;
3849 Vector<uInt> rows = iter->getRows( SHARE ) ;
3850 // out should be an exact copy of s except that SPECTRA column is empty
3851 calibrateFS( ssig, sref, rsig, rref, asky, ahot, acold, rows ) ;
3852 ahot->unsetSelection() ;
3853 asky->unsetSelection() ;
3854 sel.reset() ;
3855 iter->next() ;
3856 }
3857 delete iter ;
3858 }
3859
3860 // do folding if necessary
3861 Table sigtab = ssig->table() ;
3862 Table reftab = sref->table() ;
3863 ScalarColumn<uInt> reffidCol ;
3864 Int nchan = (Int)ssig->nchan() ;
3865 reffidCol.attach( reftab, "FREQ_ID" ) ;
3866 Vector<uInt> sfids = ssig->mfreqidCol_.getColumn() ;
3867 Vector<uInt> rfids = sref->mfreqidCol_.getColumn() ;
3868 vector<uInt> sfids_unique ;
3869 vector<uInt> rfids_unique ;
3870 vector<uInt> sifno_unique ;
3871 vector<uInt> rifno_unique ;
3872 for ( uInt i = 0 ; i < sfids.nelements() ; i++ ) {
3873 if ( count( sfids_unique.begin(), sfids_unique.end(), sfids[i] ) == 0 ) {
3874 sfids_unique.push_back( sfids[i] ) ;
3875 sifno_unique.push_back( ssig->getIF( i ) ) ;
3876 }
3877 if ( count( rfids_unique.begin(), rfids_unique.end(), rfids[i] ) == 0 ) {
3878 rfids_unique.push_back( rfids[i] ) ;
3879 rifno_unique.push_back( sref->getIF( i ) ) ;
3880 }
3881 }
3882 double refpix_sig, refval_sig, increment_sig ;
3883 double refpix_ref, refval_ref, increment_ref ;
3884 vector< CountedPtr<Scantable> > tmp( sfids_unique.size() ) ;
3885 for ( uInt i = 0 ; i < sfids_unique.size() ; i++ ) {
3886 ssig->frequencies().getEntry( refpix_sig, refval_sig, increment_sig, sfids_unique[i] ) ;
3887 sref->frequencies().getEntry( refpix_ref, refval_ref, increment_ref, rfids_unique[i] ) ;
3888 if ( refpix_sig == refpix_ref ) {
3889 double foffset = refval_ref - refval_sig ;
3890 int choffset = static_cast<int>(foffset/increment_sig) ;
3891 double doffset = foffset / increment_sig ;
3892 if ( abs(choffset) >= nchan ) {
3893 LogIO os( LogOrigin( "STMath", "cwcalfs", WHERE ) ) ;
3894 os << "FREQ_ID=[" << sfids_unique[i] << "," << rfids_unique[i] << "]: out-band frequency switching, no folding" << LogIO::POST ;
3895 os << "Just return signal data" << LogIO::POST ;
3896 //std::vector< CountedPtr<Scantable> > tabs ;
3897 //tabs.push_back( ssig ) ;
3898 //tabs.push_back( sref ) ;
3899 //out = merge( tabs ) ;
3900 tmp[i] = ssig ;
3901 }
3902 else {
3903 STSelector sel = STSelector() ;
3904 vector<int> v( 1, sifno_unique[i] ) ;
3905 sel.setIFs( v ) ;
3906 ssig->setSelection( sel ) ;
3907 sel.reset() ;
3908 v[0] = rifno_unique[i] ;
3909 sel.setIFs( v ) ;
3910 sref->setSelection( sel ) ;
3911 sel.reset() ;
3912 if ( antname.find( "APEX" ) != string::npos ) {
3913 tmp[i] = dofold( ssig, sref, 0.5*doffset, -0.5*doffset ) ;
3914 //tmp[i] = dofold( ssig, sref, doffset ) ;
3915 }
3916 else {
3917 tmp[i] = dofold( ssig, sref, doffset ) ;
3918 }
3919 ssig->unsetSelection() ;
3920 sref->unsetSelection() ;
3921 }
3922 }
3923 }
3924
3925 if ( tmp.size() > 1 ) {
3926 out = merge( tmp ) ;
3927 }
3928 else {
3929 out = tmp[0] ;
3930 }
3931
3932 // flux unit
3933 out->setFluxUnit( "K" ) ;
3934
3935 return out ;
3936}
3937
3938CountedPtr<Scantable> STMath::almacalfs( const CountedPtr<Scantable>& s )
3939{
3940 (void) s; //currently unused
3941 CountedPtr<Scantable> out ;
3942
3943 return out ;
3944}
3945
3946Vector<Float> STMath::getSpectrumFromTime( double reftime,
3947 const Vector<Double> &timeVec,
3948 const vector<int> &idx,
3949 const Matrix<Float>& spectra,
3950 string mode )
3951{
3952 LogIO os( LogOrigin( "STMath", "getSpectrumFromTime", WHERE ) ) ;
3953 Vector<Float> sp ;
3954 uInt ncol = spectra.ncolumn() ;
3955
3956 if ( ncol == 0 ) {
3957 os << LogIO::SEVERE << "No spectra in the input scantable. Return empty spectrum." << LogIO::POST ;
3958 return sp ;
3959 }
3960 else if ( ncol == 1 ) {
3961 //os << "use row " << 0 << " (scanno = " << s->getScan( 0 ) << ")" << LogIO::POST ;
3962 sp.reference( spectra.column( 0 ) ) ;
3963 return sp ;
3964 }
3965 else {
3966 if ( mode == "before" ) {
3967 int id = -1 ;
3968 if ( idx[0] != -1 ) {
3969 id = idx[0] ;
3970 }
3971 else if ( idx[1] != -1 ) {
3972 os << LogIO::WARN << "Failed to find a scan before reftime. return a spectrum just after the reftime." << LogIO::POST ;
3973 id = idx[1] ;
3974 }
3975 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
3976 sp.reference( spectra.column( id ) ) ;
3977 }
3978 else if ( mode == "after" ) {
3979 int id = -1 ;
3980 if ( idx[1] != -1 ) {
3981 id = idx[1] ;
3982 }
3983 else if ( idx[0] != -1 ) {
3984 os << LogIO::WARN << "Failed to find a scan after reftime. return a spectrum just before the reftime." << LogIO::POST ;
3985 id = idx[1] ;
3986 }
3987 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
3988 sp.reference( spectra.column( id ) ) ;
3989 }
3990 else if ( mode == "nearest" ) {
3991 int id = -1 ;
3992 if ( idx[0] == -1 ) {
3993 id = idx[1] ;
3994 }
3995 else if ( idx[1] == -1 ) {
3996 id = idx[0] ;
3997 }
3998 else if ( idx[0] == idx[1] ) {
3999 id = idx[0] ;
4000 }
4001 else {
4002 double t0 = timeVec[idx[0]] ;
4003 double t1 = timeVec[idx[1]] ;
4004 double tref = reftime ;
4005 if ( abs( t0 - tref ) > abs( t1 - tref ) ) {
4006 id = idx[1] ;
4007 }
4008 else {
4009 id = idx[0] ;
4010 }
4011 }
4012 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
4013 sp.reference( spectra.column( id ) ) ;
4014 }
4015 else if ( mode == "linear" ) {
4016 if ( idx[0] == -1 ) {
4017 // use after
4018 os << LogIO::WARN << "Failed to interpolate. return a spectrum just after the reftime." << LogIO::POST ;
4019 int id = idx[1] ;
4020 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
4021 sp.reference( spectra.column( id ) ) ;
4022 }
4023 else if ( idx[1] == -1 ) {
4024 // use before
4025 os << LogIO::WARN << "Failed to interpolate. return a spectrum just before the reftime." << LogIO::POST ;
4026 int id = idx[0] ;
4027 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
4028 sp.reference( spectra.column( id ) ) ;
4029 }
4030 else if ( idx[0] == idx[1] ) {
4031 // use before
4032 //os << "No need to interporate." << LogIO::POST ;
4033 int id = idx[0] ;
4034 //os << "use row " << id << " (scanno = " << s->getScan( id ) << ")" << LogIO::POST ;
4035 sp.reference( spectra.column( id ) ) ;
4036 }
4037 else {
4038 // do interpolation
4039 //os << "interpolate between " << idx[0] << " and " << idx[1] << " (scanno: " << s->getScan( idx[0] ) << ", " << s->getScan( idx[1] ) << ")" << LogIO::POST ;
4040 double t0 = timeVec[idx[0]] ;
4041 double t1 = timeVec[idx[1]] ;
4042 double tref = reftime ;
4043 sp = spectra.column( idx[0] ).copy() ;
4044 Vector<Float> sp1( spectra.column( idx[1] ) ) ;
4045 double tfactor = ( tref - t0 ) / ( t1 - t0 ) ;
4046 for ( unsigned int i = 0 ; i < sp.size() ; i++ ) {
4047 sp[i] = ( sp1[i] - sp[i] ) * tfactor + sp[i] ;
4048 }
4049 }
4050 }
4051 else {
4052 os << LogIO::SEVERE << "Unknown mode" << LogIO::POST ;
4053 }
4054 return sp ;
4055 }
4056}
4057
4058vector<int> STMath::getRowIdFromTime( double reftime, const Vector<Double> &t )
4059{
4060// double reft = reftime ;
4061 double dtmin = 1.0e100 ;
4062 double dtmax = -1.0e100 ;
4063// vector<double> dt ;
4064 int just_before = -1 ;
4065 int just_after = -1 ;
4066 Vector<Double> dt = t - reftime ;
4067 for ( unsigned int i = 0 ; i < dt.size() ; i++ ) {
4068 if ( dt[i] > 0.0 ) {
4069 // after reftime
4070 if ( dt[i] < dtmin ) {
4071 just_after = i ;
4072 dtmin = dt[i] ;
4073 }
4074 }
4075 else if ( dt[i] < 0.0 ) {
4076 // before reftime
4077 if ( dt[i] > dtmax ) {
4078 just_before = i ;
4079 dtmax = dt[i] ;
4080 }
4081 }
4082 else {
4083 // just a reftime
4084 just_before = i ;
4085 just_after = i ;
4086 dtmax = 0 ;
4087 dtmin = 0 ;
4088 break ;
4089 }
4090 }
4091
4092 vector<int> v(2) ;
4093 v[0] = just_before ;
4094 v[1] = just_after ;
4095
4096 return v ;
4097}
4098
4099Vector<Float> STMath::getTcalFromTime( double reftime,
4100 const Vector<Double> &timeVec,
4101 const vector<int> &idx,
4102 const CountedPtr<Scantable>& s,
4103 string mode )
4104{
4105 LogIO os( LogOrigin( "STMath", "getTcalFromTime", WHERE ) ) ;
4106 STTcal tcalTable = s->tcal() ;
4107 String time ;
4108 Vector<Float> tcalval ;
4109 if ( s->nrow() == 0 ) {
4110 os << LogIO::SEVERE << "No row in the input scantable. Return empty tcal." << LogIO::POST ;
4111 return tcalval ;
4112 }
4113 else if ( s->nrow() == 1 ) {
4114 uInt tcalid = s->getTcalId( 0 ) ;
4115 //os << "use row " << 0 << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4116 tcalTable.getEntry( time, tcalval, tcalid ) ;
4117 return tcalval ;
4118 }
4119 else {
4120 if ( mode == "before" ) {
4121 int id = -1 ;
4122 if ( idx[0] != -1 ) {
4123 id = idx[0] ;
4124 }
4125 else if ( idx[1] != -1 ) {
4126 os << LogIO::WARN << "Failed to find a scan before reftime. return a spectrum just after the reftime." << LogIO::POST ;
4127 id = idx[1] ;
4128 }
4129 uInt tcalid = s->getTcalId( id ) ;
4130 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4131 tcalTable.getEntry( time, tcalval, tcalid ) ;
4132 }
4133 else if ( mode == "after" ) {
4134 int id = -1 ;
4135 if ( idx[1] != -1 ) {
4136 id = idx[1] ;
4137 }
4138 else if ( idx[0] != -1 ) {
4139 os << LogIO::WARN << "Failed to find a scan after reftime. return a spectrum just before the reftime." << LogIO::POST ;
4140 id = idx[1] ;
4141 }
4142 uInt tcalid = s->getTcalId( id ) ;
4143 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4144 tcalTable.getEntry( time, tcalval, tcalid ) ;
4145 }
4146 else if ( mode == "nearest" ) {
4147 int id = -1 ;
4148 if ( idx[0] == -1 ) {
4149 id = idx[1] ;
4150 }
4151 else if ( idx[1] == -1 ) {
4152 id = idx[0] ;
4153 }
4154 else if ( idx[0] == idx[1] ) {
4155 id = idx[0] ;
4156 }
4157 else {
4158 double t0 = timeVec[idx[0]] ;
4159 double t1 = timeVec[idx[1]] ;
4160 if ( abs( t0 - reftime ) > abs( t1 - reftime ) ) {
4161 id = idx[1] ;
4162 }
4163 else {
4164 id = idx[0] ;
4165 }
4166 }
4167 uInt tcalid = s->getTcalId( id ) ;
4168 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4169 tcalTable.getEntry( time, tcalval, tcalid ) ;
4170 }
4171 else if ( mode == "linear" ) {
4172 if ( idx[0] == -1 ) {
4173 // use after
4174 os << LogIO::WARN << "Failed to interpolate. return a spectrum just after the reftime." << LogIO::POST ;
4175 int id = idx[1] ;
4176 uInt tcalid = s->getTcalId( id ) ;
4177 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4178 tcalTable.getEntry( time, tcalval, tcalid ) ;
4179 }
4180 else if ( idx[1] == -1 ) {
4181 // use before
4182 os << LogIO::WARN << "Failed to interpolate. return a spectrum just before the reftime." << LogIO::POST ;
4183 int id = idx[0] ;
4184 uInt tcalid = s->getTcalId( id ) ;
4185 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4186 tcalTable.getEntry( time, tcalval, tcalid ) ;
4187 }
4188 else if ( idx[0] == idx[1] ) {
4189 // use before
4190 //os << "No need to interporate." << LogIO::POST ;
4191 int id = idx[0] ;
4192 uInt tcalid = s->getTcalId( id ) ;
4193 //os << "use row " << id << " (tcalid = " << tcalid << ")" << LogIO::POST ;
4194 tcalTable.getEntry( time, tcalval, tcalid ) ;
4195 }
4196 else {
4197 // do interpolation
4198 //os << "interpolate between " << idx[0] << " and " << idx[1] << " (scanno: " << s->getScan( idx[0] ) << ", " << s->getScan( idx[1] ) << ")" << LogIO::POST ;
4199 double t0 = timeVec[idx[0]] ;
4200 double t1 = timeVec[idx[1]] ;
4201 Vector<Float> tcal0 ;
4202 uInt tcalid0 = s->getTcalId( idx[0] ) ;
4203 uInt tcalid1 = s->getTcalId( idx[1] ) ;
4204 tcalTable.getEntry( time, tcal0, tcalid0 ) ;
4205 tcalTable.getEntry( time, tcalval, tcalid1 ) ;
4206 double tfactor = (reftime - t0) / (t1 - t0) ;
4207 for ( unsigned int i = 0 ; i < tcal0.size() ; i++ ) {
4208 tcalval[i] = ( tcalval[i] - tcal0[i] ) * tfactor + tcal0[i] ;
4209 }
4210 }
4211 }
4212 else {
4213 os << LogIO::SEVERE << "Unknown mode" << LogIO::POST ;
4214 }
4215 return tcalval ;
4216 }
4217}
4218
4219Vector<Float> STMath::getTsysFromTime( double reftime,
4220 const Vector<Double> &timeVec,
4221 const vector<int> &idx,
4222 const CountedPtr<Scantable> &s,
4223 string mode )
4224{
4225 LogIO os( LogOrigin( "STMath", "getTsysFromTime", WHERE ) ) ;
4226 ArrayColumn<Float> tsysCol ;
4227 tsysCol.attach( s->table(), "TSYS" ) ;
4228 Vector<Float> tsysval ;
4229 if ( s->nrow() == 0 ) {
4230 os << LogIO::SEVERE << "No row in the input scantable. Return empty tsys." << LogIO::POST ;
4231 return tsysval ;
4232 }
4233 else if ( s->nrow() == 1 ) {
4234 //os << "use row " << 0 << LogIO::POST ;
4235 tsysval = tsysCol( 0 ) ;
4236 return tsysval ;
4237 }
4238 else {
4239 if ( mode == "before" ) {
4240 int id = -1 ;
4241 if ( idx[0] != -1 ) {
4242 id = idx[0] ;
4243 }
4244 else if ( idx[1] != -1 ) {
4245 os << LogIO::WARN << "Failed to find a scan before reftime. return a spectrum just after the reftime." << LogIO::POST ;
4246 id = idx[1] ;
4247 }
4248 //os << "use row " << id << LogIO::POST ;
4249 tsysval = tsysCol( id ) ;
4250 }
4251 else if ( mode == "after" ) {
4252 int id = -1 ;
4253 if ( idx[1] != -1 ) {
4254 id = idx[1] ;
4255 }
4256 else if ( idx[0] != -1 ) {
4257 os << LogIO::WARN << "Failed to find a scan after reftime. return a spectrum just before the reftime." << LogIO::POST ;
4258 id = idx[1] ;
4259 }
4260 //os << "use row " << id << LogIO::POST ;
4261 tsysval = tsysCol( id ) ;
4262 }
4263 else if ( mode == "nearest" ) {
4264 int id = -1 ;
4265 if ( idx[0] == -1 ) {
4266 id = idx[1] ;
4267 }
4268 else if ( idx[1] == -1 ) {
4269 id = idx[0] ;
4270 }
4271 else if ( idx[0] == idx[1] ) {
4272 id = idx[0] ;
4273 }
4274 else {
4275 double t0 = timeVec[idx[0]] ;
4276 double t1 = timeVec[idx[1]] ;
4277 if ( abs( t0 - reftime ) > abs( t1 - reftime ) ) {
4278 id = idx[1] ;
4279 }
4280 else {
4281 id = idx[0] ;
4282 }
4283 }
4284 //os << "use row " << id << LogIO::POST ;
4285 tsysval = tsysCol( id ) ;
4286 }
4287 else if ( mode == "linear" ) {
4288 if ( idx[0] == -1 ) {
4289 // use after
4290 os << LogIO::WARN << "Failed to interpolate. return a spectrum just after the reftime." << LogIO::POST ;
4291 int id = idx[1] ;
4292 //os << "use row " << id << LogIO::POST ;
4293 tsysval = tsysCol( id ) ;
4294 }
4295 else if ( idx[1] == -1 ) {
4296 // use before
4297 os << LogIO::WARN << "Failed to interpolate. return a spectrum just before the reftime." << LogIO::POST ;
4298 int id = idx[0] ;
4299 //os << "use row " << id << LogIO::POST ;
4300 tsysval = tsysCol( id ) ;
4301 }
4302 else if ( idx[0] == idx[1] ) {
4303 // use before
4304 //os << "No need to interporate." << LogIO::POST ;
4305 int id = idx[0] ;
4306 //os << "use row " << id << LogIO::POST ;
4307 tsysval = tsysCol( id ) ;
4308 }
4309 else {
4310 // do interpolation
4311 //os << "interpolate between " << idx[0] << " and " << idx[1] << " (scanno: " << s->getScan( idx[0] ) << ", " << s->getScan( idx[1] ) << ")" << LogIO::POST ;
4312 double t0 = timeVec[idx[0]] ;
4313 double t1 = timeVec[idx[1]] ;
4314 Vector<Float> tsys0 ;
4315 tsys0 = tsysCol( idx[0] ) ;
4316 tsysval = tsysCol( idx[1] ) ;
4317 double tfactor = (reftime - t0) / (t1 - t0) ;
4318 for ( unsigned int i = 0 ; i < tsys0.size() ; i++ ) {
4319 tsysval[i] = ( tsysval[i] - tsys0[i] ) * tfactor + tsys0[i] ;
4320 }
4321 }
4322 }
4323 else {
4324 os << LogIO::SEVERE << "Unknown mode" << LogIO::POST ;
4325 }
4326 return tsysval ;
4327 }
4328}
4329
4330void STMath::calibrateCW( CountedPtr<Scantable> &out,
4331 const CountedPtr<Scantable>& on,
4332 const CountedPtr<Scantable>& off,
4333 const CountedPtr<Scantable>& sky,
4334 const CountedPtr<Scantable>& hot,
4335 const CountedPtr<Scantable>& cold,
4336 const Vector<uInt> &rows,
4337 const String &antname )
4338{
4339 // 2012/05/22 TN
4340 // Assume that out has empty SPECTRA column
4341
4342 // if rows is empty, just return
4343 if ( rows.nelements() == 0 )
4344 return ;
4345 ROScalarColumn<Double> timeCol( off->table(), "TIME" ) ;
4346 Vector<Double> timeOff = timeCol.getColumn() ;
4347 timeCol.attach( sky->table(), "TIME" ) ;
4348 Vector<Double> timeSky = timeCol.getColumn() ;
4349 timeCol.attach( hot->table(), "TIME" ) ;
4350 Vector<Double> timeHot = timeCol.getColumn() ;
4351 timeCol.attach( on->table(), "TIME" ) ;
4352 ROArrayColumn<Float> arrayFloatCol( off->table(), "SPECTRA" ) ;
4353 Matrix<Float> offspectra = arrayFloatCol.getColumn() ;
4354 arrayFloatCol.attach( sky->table(), "SPECTRA" ) ;
4355 Matrix<Float> skyspectra = arrayFloatCol.getColumn() ;
4356 arrayFloatCol.attach( hot->table(), "SPECTRA" ) ;
4357 Matrix<Float> hotspectra = arrayFloatCol.getColumn() ;
4358 unsigned int spsize = on->nchan( on->getIF(rows[0]) ) ;
4359 // I know that the data is contiguous
4360 const uInt *p = rows.data() ;
4361 vector<int> ids( 2 ) ;
4362 Block<uInt> flagchan( spsize ) ;
4363 uInt nflag = 0 ;
4364 for ( int irow = 0 ; irow < rows.nelements() ; irow++ ) {
4365 double reftime = timeCol.asdouble(*p) ;
4366 ids = getRowIdFromTime( reftime, timeOff ) ;
4367 Vector<Float> spoff = getSpectrumFromTime( reftime, timeOff, ids, offspectra, "linear" ) ;
4368 ids = getRowIdFromTime( reftime, timeSky ) ;
4369 Vector<Float> spsky = getSpectrumFromTime( reftime, timeSky, ids, skyspectra, "linear" ) ;
4370 Vector<Float> tcal = getTcalFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4371 Vector<Float> tsys = getTsysFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4372 ids = getRowIdFromTime( reftime, timeHot ) ;
4373 Vector<Float> sphot = getSpectrumFromTime( reftime, timeHot, ids, hotspectra, "linear" ) ;
4374 Vector<Float> spec = on->specCol_( *p ) ;
4375 if ( antname.find( "APEX" ) != String::npos ) {
4376 // using gain array
4377 for ( unsigned int j = 0 ; j < tcal.size() ; j++ ) {
4378 if ( spoff[j] == 0.0 || (sphot[j]-spsky[j]) == 0.0 ) {
4379 spec[j] = 0.0 ;
4380 flagchan[nflag++] = j ;
4381 }
4382 else {
4383 spec[j] = ( ( spec[j] - spoff[j] ) / spoff[j] )
4384 * ( spsky[j] / ( sphot[j] - spsky[j] ) ) * tcal[j] ;
4385 }
4386 }
4387 }
4388 else {
4389 // Chopper-Wheel calibration (Ulich & Haas 1976)
4390 for ( unsigned int j = 0 ; j < tcal.size() ; j++ ) {
4391 if ( (sphot[j]-spsky[j]) == 0.0 ) {
4392 spec[j] = 0.0 ;
4393 flagchan[nflag++] = j ;
4394 }
4395 else {
4396 spec[j] = ( spec[j] - spoff[j] ) / ( sphot[j] - spsky[j] ) * tcal[j] ;
4397 }
4398 }
4399 }
4400 out->specCol_.put( *p, spec ) ;
4401 out->tsysCol_.put( *p, tsys ) ;
4402 if ( nflag > 0 ) {
4403 Vector<uChar> fl = out->flagsCol_( *p ) ;
4404 for ( unsigned int j = 0 ; j < nflag ; j++ ) {
4405 fl[flagchan[j]] = (uChar)True ;
4406 }
4407 out->flagsCol_.put( *p, fl ) ;
4408 }
4409 nflag = 0 ;
4410 p++ ;
4411 }
4412}
4413
4414void STMath::calibrateALMA( CountedPtr<Scantable>& out,
4415 const CountedPtr<Scantable>& on,
4416 const CountedPtr<Scantable>& off,
4417 const Vector<uInt>& rows )
4418{
4419 // 2012/05/22 TN
4420 // Assume that out has empty SPECTRA column
4421
4422 // if rows is empty, just return
4423 if ( rows.nelements() == 0 )
4424 return ;
4425 ROScalarColumn<Double> timeCol( off->table(), "TIME" ) ;
4426 Vector<Double> timeVec = timeCol.getColumn() ;
4427 timeCol.attach( on->table(), "TIME" ) ;
4428 ROArrayColumn<Float> arrayFloatCol( off->table(), "SPECTRA" ) ;
4429 Matrix<Float> offspectra = arrayFloatCol.getColumn() ;
4430 unsigned int spsize = on->nchan( on->getIF(rows[0]) ) ;
4431 // I know that the data is contiguous
4432 const uInt *p = rows.data() ;
4433 vector<int> ids( 2 ) ;
4434 Block<uInt> flagchan( spsize ) ;
4435 uInt nflag = 0 ;
4436 for ( int irow = 0 ; irow < rows.nelements() ; irow++ ) {
4437 double reftime = timeCol.asdouble(*p) ;
4438 ids = getRowIdFromTime( reftime, timeVec ) ;
4439 Vector<Float> spoff = getSpectrumFromTime( reftime, timeVec, ids, offspectra, "linear" ) ;
4440 //Vector<Float> spoff = getSpectrumFromTime( reftime, timeVec, off, "linear" ) ;
4441 Vector<Float> spec = on->specCol_( *p ) ;
4442 Vector<Float> tsys = on->tsysCol_( *p ) ;
4443 // ALMA Calibration
4444 //
4445 // Ta* = Tsys * ( ON - OFF ) / OFF
4446 //
4447 // 2010/01/07 Takeshi Nakazato
4448 unsigned int tsyssize = tsys.nelements() ;
4449 for ( unsigned int j = 0 ; j < spsize ; j++ ) {
4450 if ( spoff[j] == 0.0 ) {
4451 spec[j] = 0.0 ;
4452 flagchan[nflag++] = j ;
4453 }
4454 else {
4455 spec[j] = ( spec[j] - spoff[j] ) / spoff[j] ;
4456 }
4457 if ( tsyssize == spsize )
4458 spec[j] *= tsys[j] ;
4459 else
4460 spec[j] *= tsys[0] ;
4461 }
4462 out->specCol_.put( *p, spec ) ;
4463 if ( nflag > 0 ) {
4464 Vector<uChar> fl = out->flagsCol_( *p ) ;
4465 for ( unsigned int j = 0 ; j < nflag ; j++ ) {
4466 fl[flagchan[j]] = (uChar)True ;
4467 }
4468 out->flagsCol_.put( *p, fl ) ;
4469 }
4470 nflag = 0 ;
4471 p++ ;
4472 }
4473}
4474
4475void STMath::calibrateAPEXFS( CountedPtr<Scantable> &sig,
4476 CountedPtr<Scantable> &ref,
4477 const vector< CountedPtr<Scantable> >& on,
4478 const vector< CountedPtr<Scantable> >& sky,
4479 const vector< CountedPtr<Scantable> >& hot,
4480 const vector< CountedPtr<Scantable> >& cold,
4481 const Vector<uInt> &rows )
4482{
4483 // if rows is empty, just return
4484 if ( rows.nelements() == 0 )
4485 return ;
4486 ROScalarColumn<Double> timeCol( sky[0]->table(), "TIME" ) ;
4487 Vector<Double> timeSkyS = timeCol.getColumn() ;
4488 timeCol.attach( sky[1]->table(), "TIME" ) ;
4489 Vector<Double> timeSkyR = timeCol.getColumn() ;
4490 timeCol.attach( hot[0]->table(), "TIME" ) ;
4491 Vector<Double> timeHotS = timeCol.getColumn() ;
4492 timeCol.attach( hot[1]->table(), "TIME" ) ;
4493 Vector<Double> timeHotR = timeCol.getColumn() ;
4494 timeCol.attach( sig->table(), "TIME" ) ;
4495 ROScalarColumn<Double> timeCol2( ref->table(), "TIME" ) ;
4496 ROArrayColumn<Float> arrayFloatCol( sky[0]->table(), "SPECTRA" ) ;
4497 Matrix<Float> skyspectraS = arrayFloatCol.getColumn() ;
4498 arrayFloatCol.attach( sky[1]->table(), "SPECTRA" ) ;
4499 Matrix<Float> skyspectraR = arrayFloatCol.getColumn() ;
4500 arrayFloatCol.attach( hot[0]->table(), "SPECTRA" ) ;
4501 Matrix<Float> hotspectraS = arrayFloatCol.getColumn() ;
4502 arrayFloatCol.attach( hot[1]->table(), "SPECTRA" ) ;
4503 Matrix<Float> hotspectraR = arrayFloatCol.getColumn() ;
4504 unsigned int spsize = sig->nchan( sig->getIF(rows[0]) ) ;
4505 Vector<Float> spec( spsize ) ;
4506 // I know that the data is contiguous
4507 const uInt *p = rows.data() ;
4508 vector<int> ids( 2 ) ;
4509 Block<uInt> flagchan( spsize ) ;
4510 uInt nflag = 0 ;
4511 for ( int irow = 0 ; irow < rows.nelements() ; irow++ ) {
4512 double reftime = timeCol.asdouble(*p) ;
4513 ids = getRowIdFromTime( reftime, timeSkyS ) ;
4514 Vector<Float> spskyS = getSpectrumFromTime( reftime, timeSkyS, ids, skyspectraS, "linear" ) ;
4515 Vector<Float> tcalS = getTcalFromTime( reftime, timeSkyS, ids, sky[0], "linear" ) ;
4516 Vector<Float> tsysS = getTsysFromTime( reftime, timeSkyS, ids, sky[0], "linear" ) ;
4517 ids = getRowIdFromTime( reftime, timeHotS ) ;
4518 Vector<Float> sphotS = getSpectrumFromTime( reftime, timeHotS, ids, hotspectraS ) ;
4519 reftime = timeCol2.asdouble(*p) ;
4520 ids = getRowIdFromTime( reftime, timeSkyR ) ;
4521 Vector<Float> spskyR = getSpectrumFromTime( reftime, timeSkyR, ids, skyspectraR, "linear" ) ;
4522 Vector<Float> tcalR = getTcalFromTime( reftime, timeSkyR, ids, sky[1], "linear" ) ;
4523 Vector<Float> tsysR = getTsysFromTime( reftime, timeSkyR, ids, sky[1], "linear" ) ;
4524 ids = getRowIdFromTime( reftime, timeHotR ) ;
4525 Vector<Float> sphotR = getSpectrumFromTime( reftime, timeHotR, ids, hotspectraR ) ;
4526 Vector<Float> spsig = on[0]->specCol_( *p ) ;
4527 Vector<Float> spref = on[1]->specCol_( *p ) ;
4528 for ( unsigned int j = 0 ; j < spsize ; j++ ) {
4529 if ( (sphotS[j]-spskyS[j]) == 0.0 || (sphotR[j]-spskyR[j]) == 0.0 ) {
4530 spec[j] = 0.0 ;
4531 flagchan[nflag++] = j ;
4532 }
4533 else {
4534 spec[j] = tcalS[j] * spsig[j] / ( sphotS[j] - spskyS[j] )
4535 - tcalR[j] * spref[j] / ( sphotR[j] - spskyR[j] ) ;
4536 }
4537 }
4538 sig->specCol_.put( *p, spec ) ;
4539 sig->tsysCol_.put( *p, tsysS ) ;
4540 spec *= (Float)-1.0 ;
4541 ref->specCol_.put( *p, spec ) ;
4542 ref->tsysCol_.put( *p, tsysR ) ;
4543 if ( nflag > 0 ) {
4544 Vector<uChar> flsig = sig->flagsCol_( *p ) ;
4545 Vector<uChar> flref = ref->flagsCol_( *p ) ;
4546 for ( unsigned int j = 0 ; j < nflag ; j++ ) {
4547 flsig[flagchan[j]] = (uChar)True ;
4548 flref[flagchan[j]] = (uChar)True ;
4549 }
4550 sig->flagsCol_.put( *p, flsig ) ;
4551 ref->flagsCol_.put( *p, flref ) ;
4552 }
4553 nflag = 0 ;
4554 p++ ;
4555 }
4556}
4557
4558void STMath::calibrateFS( CountedPtr<Scantable> &sig,
4559 CountedPtr<Scantable> &ref,
4560 const CountedPtr<Scantable>& rsig,
4561 const CountedPtr<Scantable>& rref,
4562 const CountedPtr<Scantable>& sky,
4563 const CountedPtr<Scantable>& hot,
4564 const CountedPtr<Scantable>& cold,
4565 const Vector<uInt> &rows )
4566{
4567 // if rows is empty, just return
4568 if ( rows.nelements() == 0 )
4569 return ;
4570 ROScalarColumn<Double> timeCol( sky->table(), "TIME" ) ;
4571 Vector<Double> timeSky = timeCol.getColumn() ;
4572 timeCol.attach( hot->table(), "TIME" ) ;
4573 Vector<Double> timeHot = timeCol.getColumn() ;
4574 timeCol.attach( sig->table(), "TIME" ) ;
4575 ROScalarColumn<Double> timeCol2( ref->table(), "TIME" ) ;
4576 ROArrayColumn<Float> arrayFloatCol( sky->table(), "SPECTRA" ) ;
4577 Matrix<Float> skyspectra = arrayFloatCol.getColumn() ;
4578 arrayFloatCol.attach( hot->table(), "SPECTRA" ) ;
4579 Matrix<Float> hotspectra = arrayFloatCol.getColumn() ;
4580 unsigned int spsize = sig->nchan( sig->getIF(rows[0]) ) ;
4581 Vector<Float> spec( spsize ) ;
4582 // I know that the data is contiguous
4583 const uInt *p = rows.data() ;
4584 vector<int> ids( 2 ) ;
4585 Block<uInt> flagchan( spsize ) ;
4586 uInt nflag = 0 ;
4587 for ( int irow = 0 ; irow < rows.nelements() ; irow++ ) {
4588 double reftime = timeCol.asdouble(*p) ;
4589 ids = getRowIdFromTime( reftime, timeSky ) ;
4590 Vector<Float> spsky = getSpectrumFromTime( reftime, timeSky, ids, skyspectra, "linear" ) ;
4591 Vector<Float> tcal = getTcalFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4592 Vector<Float> tsys = getTsysFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4593 ids = getRowIdFromTime( reftime, timeHot ) ;
4594 Vector<Float> sphot = getSpectrumFromTime( reftime, timeHot, ids, hotspectra ) ;
4595 Vector<Float> spsig = rsig->specCol_( *p ) ;
4596 Vector<Float> spref = rref->specCol_( *p ) ;
4597 // using gain array
4598 for ( unsigned int j = 0 ; j < spsize ; j++ ) {
4599 if ( spref[j] == 0.0 || (sphot[j]-spsky[j]) == 0.0 ) {
4600 spec[j] = 0.0 ;
4601 flagchan[nflag++] = j ;
4602 }
4603 else {
4604 spec[j] = ( ( spsig[j] - spref[j] ) / spref[j] )
4605 * ( spsky[j] / ( sphot[j] - spsky[j] ) ) * tcal[j] ;
4606 }
4607 }
4608 sig->specCol_.put( *p, spec ) ;
4609 sig->tsysCol_.put( *p, tsys ) ;
4610 if ( nflag > 0 ) {
4611 Vector<uChar> fl = sig->flagsCol_( *p ) ;
4612 for ( unsigned int j = 0 ; j < nflag ; j++ ) {
4613 fl[flagchan[j]] = (uChar)True ;
4614 }
4615 sig->flagsCol_.put( *p, fl ) ;
4616 }
4617 nflag = 0 ;
4618
4619 reftime = timeCol2.asdouble(*p) ;
4620 spsky = getSpectrumFromTime( reftime, timeSky, ids, skyspectra, "linear" ) ;
4621 tcal = getTcalFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4622 tsys = getTsysFromTime( reftime, timeSky, ids, sky, "linear" ) ;
4623 ids = getRowIdFromTime( reftime, timeHot ) ;
4624 sphot = getSpectrumFromTime( reftime, timeHot, ids, hotspectra ) ;
4625 // using gain array
4626 for ( unsigned int j = 0 ; j < spsize ; j++ ) {
4627 if ( spsig[j] == 0.0 || (sphot[j]-spsky[j]) == 0.0 ) {
4628 spec[j] = 0.0 ;
4629 flagchan[nflag++] = j ;
4630 }
4631 else {
4632 spec[j] = ( ( spref[j] - spsig[j] ) / spsig[j] )
4633 * ( spsky[j] / ( sphot[j] - spsky[j] ) ) * tcal[j] ;
4634 }
4635 }
4636 ref->specCol_.put( *p, spec ) ;
4637 ref->tsysCol_.put( *p, tsys ) ;
4638 if ( nflag > 0 ) {
4639 Vector<uChar> fl = ref->flagsCol_( *p ) ;
4640 for ( unsigned int j = 0 ; j < nflag ; j++ ) {
4641 fl[flagchan[j]] = (uChar)True ;
4642 }
4643 ref->flagsCol_.put( *p, fl ) ;
4644 }
4645 nflag = 0 ;
4646 p++ ;
4647 }
4648}
4649
4650void STMath::copyRows( Table &out,
4651 const Table &in,
4652 uInt startout,
4653 uInt startin,
4654 uInt nrow,
4655 Bool copySpectra,
4656 Bool copyFlagtra,
4657 Bool copyTsys )
4658{
4659 uInt nexclude = 0 ;
4660 Block<String> excludeColsBlock( 3 ) ;
4661 if ( !copySpectra ) {
4662 excludeColsBlock[nexclude] = "SPECTRA" ;
4663 nexclude++ ;
4664 }
4665 if ( !copyFlagtra ) {
4666 excludeColsBlock[nexclude] = "FLAGTRA" ;
4667 nexclude++ ;
4668 }
4669 if ( !copyTsys ) {
4670 excludeColsBlock[nexclude] = "TSYS" ;
4671 nexclude++ ;
4672 }
4673 // if ( nexclude < 3 ) {
4674 // excludeCols.resize( nexclude, True ) ;
4675 // }
4676 Vector<String> excludeCols( IPosition(1,nexclude),
4677 excludeColsBlock.storage(),
4678 SHARE ) ;
4679// cout << "excludeCols=" << excludeCols << endl ;
4680 TableRow rowout( out, excludeCols, True ) ;
4681 ROTableRow rowin( in, excludeCols, True ) ;
4682 uInt rin = startin ;
4683 uInt rout = startout ;
4684 for ( uInt i = 0 ; i < nrow ; i++ ) {
4685 rowin.get( rin ) ;
4686 rowout.putMatchingFields( rout, rowin.record() ) ;
4687 rin++ ;
4688 rout++ ;
4689 }
4690}
4691
4692CountedPtr<Scantable> STMath::averageWithinSession( CountedPtr<Scantable> &s,
4693 vector<bool> &mask,
4694 string weight )
4695{
4696 // prepare output table
4697 bool insitu = insitu_ ;
4698 insitu_ = false ;
4699 CountedPtr<Scantable> a = getScantable( s, true ) ;
4700 insitu_ = insitu ;
4701 Table &atab = a->table() ;
4702 ScalarColumn<Double> timeColOut( atab, "TIME" ) ;
4703
4704 if ( s->nrow() == 0 )
4705 return a ;
4706
4707 // setup RowAccumulator
4708 WeightType wtype = stringToWeight( weight ) ;
4709 RowAccumulator acc( wtype ) ;
4710 Vector<Bool> cmask( mask ) ;
4711 acc.setUserMask( cmask ) ;
4712
4713 vector<string> cols( 3 ) ;
4714 cols[0] = "IFNO" ;
4715 cols[1] = "POLNO" ;
4716 cols[2] = "BEAMNO" ;
4717 STIdxIterAcc iter( s, cols ) ;
4718
4719 Table ttab = s->table() ;
4720 ROScalarColumn<Double> *timeCol = new ROScalarColumn<Double>( ttab, "TIME" ) ;
4721 Vector<Double> timeVec = timeCol->getColumn() ;
4722 delete timeCol ;
4723 Vector<Double> interval = s->integrCol_.getColumn() ;
4724 uInt nrow = timeVec.nelements() ;
4725 uInt outrow = 0 ;
4726
4727 while( !iter.pastEnd() ) {
4728
4729 Vector<uInt> rows = iter.getRows( SHARE ) ;
4730 uInt len = rows.nelements() ;
4731
4732 if ( len == 0 ) {
4733 iter.next() ;
4734 continue ;
4735 }
4736
4737 uInt nchan = s->nchan(s->getIF(rows[0])) ;
4738 Vector<uChar> flag( nchan ) ;
4739 Vector<Bool> bflag( nchan ) ;
4740 Vector<Float> spec( nchan ) ;
4741 Vector<Float> tsys( nchan ) ;
4742
4743 Vector<Double> timeSep( len-1 ) ;
4744 for ( uInt i = 0 ; i < len-1 ; i++ ) {
4745 timeSep[i] = timeVec[rows[i+1]] - timeVec[rows[i]] ;
4746 }
4747
4748 uInt irow ;
4749 uInt jrow ;
4750 for ( uInt i = 0 ; i < len-1 ; i++ ) {
4751 irow = rows[i] ;
4752 jrow = rows[i+1] ;
4753 // accumulate data
4754 s->flagsCol_.get( irow, flag ) ;
4755 convertArray( bflag, flag ) ;
4756 s->specCol_.get( irow, spec ) ;
4757 tsys.assign( s->tsysCol_( irow ) ) ;
4758 if ( !allEQ(bflag,True) )
4759 acc.add( spec, !bflag, tsys, interval[irow], timeVec[irow] ) ;
4760 double gap = 2.0 * 86400.0 * timeSep[i] / ( interval[jrow] + interval[irow] ) ;
4761 //cout << "gap[" << i << "]=" << setw(5) << gap << endl ;
4762 if ( gap > 1.1 ) {
4763 //cout << "detected gap between " << i << " and " << i+1 << endl ;
4764 // put data to output table
4765 // reset RowAccumulator
4766 if ( acc.state() ) {
4767 atab.addRow() ;
4768 copyRows( atab, ttab, outrow, irow, 1, False, False, False ) ;
4769 acc.replaceNaN() ;
4770 const Vector<Bool> &msk = acc.getMask() ;
4771 convertArray( flag, !msk ) ;
4772 for (uInt k = 0; k < nchan; ++k) {
4773 uChar userFlag = 1 << 7;
4774 if (msk[k]==True) userFlag = 0 << 7;
4775 flag(k) = userFlag;
4776 }
4777 a->flagsCol_.put( outrow, flag ) ;
4778 a->specCol_.put( outrow, acc.getSpectrum() ) ;
4779 a->tsysCol_.put( outrow, acc.getTsys() ) ;
4780 a->integrCol_.put( outrow, acc.getInterval() ) ;
4781 timeColOut.put( outrow, acc.getTime() ) ;
4782 a->cycleCol_.put( outrow, 0 ) ;
4783 }
4784 acc.reset() ;
4785 outrow++ ;
4786 }
4787 }
4788
4789 // accumulate and add last data
4790 irow = rows[len-1] ;
4791 s->flagsCol_.get( irow, flag ) ;
4792 convertArray( bflag, flag ) ;
4793 s->specCol_.get( irow, spec ) ;
4794 tsys.assign( s->tsysCol_( irow ) ) ;
4795 if (!allEQ(bflag,True) )
4796 acc.add( spec, !bflag, tsys, interval[irow], timeVec[irow] ) ;
4797 if ( acc.state() ) {
4798 atab.addRow() ;
4799 copyRows( atab, ttab, outrow, irow, 1, False, False, False ) ;
4800 acc.replaceNaN() ;
4801 const Vector<Bool> &msk = acc.getMask() ;
4802 convertArray( flag, !msk ) ;
4803 for (uInt k = 0; k < nchan; ++k) {
4804 uChar userFlag = 1 << 7;
4805 if (msk[k]==True) userFlag = 0 << 7;
4806 flag(k) = userFlag;
4807 }
4808 a->flagsCol_.put( outrow, flag ) ;
4809 a->specCol_.put( outrow, acc.getSpectrum() ) ;
4810 a->tsysCol_.put( outrow, acc.getTsys() ) ;
4811 a->integrCol_.put( outrow, acc.getInterval() ) ;
4812 timeColOut.put( outrow, acc.getTime() ) ;
4813 a->cycleCol_.put( outrow, 0 ) ;
4814 }
4815 acc.reset() ;
4816 outrow++ ;
4817
4818 iter.next() ;
4819 }
4820
4821 return a ;
4822}
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