source: trunk/src/SDMemTable.cc @ 281

Last change on this file since 281 was 281, checked in by mar637, 19 years ago
  • revamped summary Function, added postion and number of integr. per scan
  • added formatDirection
  • modified getTime to return Header time on whichRow=-1
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 35.7 KB
Line 
1//#---------------------------------------------------------------------------
2//# SDMemTable.cc: A MemoryTable container for single dish integrations
3//#---------------------------------------------------------------------------
4//# Copyright (C) 2004
5//# ATNF
6//#
7//# This program is free software; you can redistribute it and/or modify it
8//# under the terms of the GNU General Public License as published by the Free
9//# Software Foundation; either version 2 of the License, or (at your option)
10//# any later version.
11//#
12//# This program is distributed in the hope that it will be useful, but
13//# WITHOUT ANY WARRANTY; without even the implied warranty of
14//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
15//# Public License for more details.
16//#
17//# You should have received a copy of the GNU General Public License along
18//# with this program; if not, write to the Free Software Foundation, Inc.,
19//# 675 Massachusetts Ave, Cambridge, MA 02139, USA.
20//#
21//# Correspondence concerning this software should be addressed as follows:
22//#        Internet email: Malte.Marquarding@csiro.au
23//#        Postal address: Malte Marquarding,
24//#                        Australia Telescope National Facility,
25//#                        P.O. Box 76,
26//#                        Epping, NSW, 2121,
27//#                        AUSTRALIA
28//#
29//# $Id:
30//#---------------------------------------------------------------------------
31
32#include <map>
33
34#include <casa/aips.h>
35#include <casa/iostream.h>
36#include <casa/iomanip.h>
37#include <casa/Arrays/Array.h>
38#include <casa/Arrays/ArrayMath.h>
39#include <casa/Arrays/MaskArrMath.h>
40#include <casa/Arrays/ArrayLogical.h>
41#include <casa/Arrays/ArrayAccessor.h>
42#include <casa/Arrays/Vector.h>
43
44#include <tables/Tables/TableParse.h>
45#include <tables/Tables/TableDesc.h>
46#include <tables/Tables/SetupNewTab.h>
47#include <tables/Tables/ScaColDesc.h>
48#include <tables/Tables/ArrColDesc.h>
49
50#include <tables/Tables/ExprNode.h>
51#include <tables/Tables/ScalarColumn.h>
52#include <tables/Tables/ArrayColumn.h>
53#include <tables/Tables/TableRecord.h>
54#include <measures/Measures/MFrequency.h>
55#include <measures/Measures/MeasTable.h>
56#include <coordinates/Coordinates/CoordinateUtil.h>
57#include <casa/Quanta/MVTime.h>
58#include <casa/Quanta/MVAngle.h>
59
60#include "SDDefs.h"
61#include "SDMemTable.h"
62#include "SDContainer.h"
63
64
65using namespace casa;
66using namespace asap;
67
68SDMemTable::SDMemTable() :
69  IFSel_(0),
70  beamSel_(0),
71  polSel_(0)
72{
73  setup();
74}
75
76SDMemTable::SDMemTable(const std::string& name) :
77  IFSel_(0),
78  beamSel_(0),
79  polSel_(0)
80{
81  Table tab(name);
82  table_ = tab.copyToMemoryTable("dummy");
83  //cerr << "hello from C SDMemTable @ " << this << endl;
84}
85
86SDMemTable::SDMemTable(const SDMemTable& other, Bool clear)
87{
88  IFSel_= other.IFSel_;
89  beamSel_= other.beamSel_;
90  polSel_= other.polSel_;
91  chanMask_ = other.chanMask_;
92  table_ = other.table_.copyToMemoryTable(String("dummy"));
93  // clear all rows()
94  if (clear) {
95    table_.removeRow(this->table_.rowNumbers());
96  } else {
97    IFSel_ = other.IFSel_;
98    beamSel_ = other.beamSel_;
99    polSel_ = other.polSel_;
100  }
101  //cerr << "hello from CC SDMemTable @ " << this << endl;
102}
103
104SDMemTable::SDMemTable(const Table& tab, const std::string& exprs) :
105  IFSel_(0),
106  beamSel_(0),
107  polSel_(0)
108{
109  Table t = tableCommand(exprs,tab);
110  if (t.nrow() == 0)
111      throw(AipsError("Query unsuccessful."));
112  table_ = t.copyToMemoryTable("dummy");
113}
114
115SDMemTable::~SDMemTable()
116{
117  //cerr << "goodbye from SDMemTable @ " << this << endl;
118}
119
120SDMemTable SDMemTable::getScan(Int scanID) const
121{
122  String cond("SELECT * from $1 WHERE SCANID == ");
123  cond += String::toString(scanID);
124  return SDMemTable(table_, cond);
125}
126
127SDMemTable &SDMemTable::operator=(const SDMemTable& other)
128{
129  if (this != &other) {
130     IFSel_= other.IFSel_;
131     beamSel_= other.beamSel_;
132     polSel_= other.polSel_;
133     chanMask_.resize(0);
134     chanMask_ = other.chanMask_;
135     table_ = other.table_.copyToMemoryTable(String("dummy"));
136  }
137  //cerr << "hello from ASS SDMemTable @ " << this << endl;
138  return *this;
139}
140
141SDMemTable SDMemTable::getSource(const std::string& source) const
142{
143  String cond("SELECT * from $1 WHERE SRCNAME == ");
144  cond += source;
145  return SDMemTable(table_, cond);
146}
147
148void SDMemTable::setup()
149{
150  TableDesc td("", "1", TableDesc::Scratch);
151  td.comment() = "A SDMemTable";
152  td.addColumn(ScalarColumnDesc<Double>("TIME"));
153  td.addColumn(ScalarColumnDesc<String>("SRCNAME"));
154  td.addColumn(ArrayColumnDesc<Float>("SPECTRA"));
155  td.addColumn(ArrayColumnDesc<uChar>("FLAGTRA"));
156  td.addColumn(ArrayColumnDesc<Float>("TSYS"));
157  td.addColumn(ScalarColumnDesc<Int>("SCANID"));
158  td.addColumn(ScalarColumnDesc<Double>("INTERVAL"));
159  td.addColumn(ArrayColumnDesc<uInt>("FREQID"));
160  td.addColumn(ArrayColumnDesc<Double>("DIRECTION"));
161  td.addColumn(ScalarColumnDesc<String>("FIELDNAME"));
162  td.addColumn(ScalarColumnDesc<String>("TCALTIME"));
163  td.addColumn(ArrayColumnDesc<Float>("TCAL"));
164  td.addColumn(ScalarColumnDesc<Float>("AZIMUTH"));
165  td.addColumn(ScalarColumnDesc<Float>("ELEVATION"));
166  td.addColumn(ScalarColumnDesc<Float>("PARANGLE"));
167  td.addColumn(ScalarColumnDesc<Int>("REFBEAM"));
168  td.addColumn(ArrayColumnDesc<String>("HISTORY"));
169
170  // Now create a new table from the description.
171
172  SetupNewTable aNewTab("dummy", td, Table::New);
173  table_ = Table(aNewTab, Table::Memory, 0);
174}
175
176std::string SDMemTable::getSourceName(Int whichRow) const
177{
178  ROScalarColumn<String> src(table_, "SRCNAME");
179  String name;
180  src.get(whichRow, name);
181  return name;
182}
183
184std::string SDMemTable::getTime(Int whichRow, Bool showDate) const
185{
186  Double tm;
187  if (whichRow > -1) {
188    ROScalarColumn<Double> src(table_, "TIME");
189    src.get(whichRow, tm);
190  } else {
191    table_.keywordSet().get("UTC",tm);
192  }
193  MVTime mvt(tm);
194  if (showDate)
195    mvt.setFormat(MVTime::YMD);
196  else
197    mvt.setFormat(MVTime::TIME);
198  ostringstream oss;
199  oss << mvt;
200  return String(oss);
201}
202
203double SDMemTable::getInterval(Int whichRow) const
204{
205  ROScalarColumn<Double> src(table_, "INTERVAL");
206  Double intval;
207  src.get(whichRow, intval);
208  return intval;
209}
210
211bool SDMemTable::setIF(Int whichIF)
212{
213  if ( whichIF >= 0 && whichIF < nIF()) {
214    IFSel_ = whichIF;
215    return true;
216  }
217  return false;
218}
219
220bool SDMemTable::setBeam(Int whichBeam)
221{
222  if ( whichBeam >= 0 && whichBeam < nBeam()) {
223    beamSel_ = whichBeam;
224    return true;
225  }
226  return false;
227}
228
229bool SDMemTable::setPol(Int whichPol)
230{
231  if ( whichPol >= 0 && whichPol < nPol()) {
232    polSel_ = whichPol;
233    return true;
234  }
235  return false;
236}
237
238bool SDMemTable::setMask(std::vector<int> whichChans)
239{
240  ROArrayColumn<uChar> spec(table_, "FLAGTRA");
241  std::vector<int>::iterator it;
242  uInt n = spec.shape(0)(3);
243  if (whichChans.empty()) {
244    chanMask_ = std::vector<bool>(n,true);
245    return true;     
246  }
247  chanMask_.resize(n,true);
248  for (it = whichChans.begin(); it != whichChans.end(); ++it) {
249    if (*it < n) {
250      chanMask_[*it] = false;
251    }
252  }
253  return true;
254}
255
256std::vector<bool> SDMemTable::getMask(Int whichRow) const {
257  std::vector<bool> mask;
258  ROArrayColumn<uChar> spec(table_, "FLAGTRA");
259  Array<uChar> arr;
260  spec.get(whichRow, arr);
261  ArrayAccessor<uChar, Axis<asap::BeamAxis> > aa0(arr);
262  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
263  ArrayAccessor<uChar, Axis<asap::IFAxis> > aa1(aa0);
264  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
265  ArrayAccessor<uChar, Axis<asap::PolAxis> > aa2(aa1);
266  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
267
268  Bool useUserMask = ( chanMask_.size() == arr.shape()(3) );
269
270  std::vector<bool> tmp;
271  tmp = chanMask_; // WHY the fxxx do I have to make a copy here
272  std::vector<bool>::iterator miter;
273  miter = tmp.begin();
274
275  for (ArrayAccessor<uChar, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
276    bool out =!static_cast<bool>(*i);
277    if (useUserMask) {
278      out = out && (*miter);
279      miter++;
280    }
281    mask.push_back(out);
282  }
283  return mask;
284}
285std::vector<float> SDMemTable::getSpectrum(Int whichRow) const
286{
287  std::vector<float> spectrum;
288  ROArrayColumn<Float> spec(table_, "SPECTRA");
289  Array<Float> arr;
290  spec.get(whichRow, arr);
291  ArrayAccessor<Float, Axis<asap::BeamAxis> > aa0(arr);
292  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
293  ArrayAccessor<Float, Axis<asap::IFAxis> > aa1(aa0);
294  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
295  ArrayAccessor<Float, Axis<asap::PolAxis> > aa2(aa1);
296  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
297  for (ArrayAccessor<Float, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
298    spectrum.push_back(*i);
299  }
300  return spectrum;
301}
302std::vector<string> SDMemTable::getCoordInfo() const
303{
304  String un;
305  Table t = table_.keywordSet().asTable("FREQUENCIES");
306  String sunit;
307  t.keywordSet().get("UNIT",sunit);
308  String dpl;
309  t.keywordSet().get("DOPPLER",dpl);
310  if (dpl == "") dpl = "RADIO";
311  String rfrm;
312  t.keywordSet().get("REFFRAME",rfrm);
313  std::vector<string> inf;
314  inf.push_back(sunit);
315  inf.push_back(rfrm);
316  inf.push_back(dpl);
317  t.keywordSet().get("BASEREFFRAME",rfrm);
318  inf.push_back(rfrm);
319  return inf;
320}
321
322void SDMemTable::setCoordInfo(std::vector<string> theinfo)
323{
324  std::vector<string>::iterator it;
325  String un,rfrm,dpl;
326  un = theinfo[0];
327  rfrm = theinfo[1];
328  dpl = theinfo[2];
329
330  Table t = table_.rwKeywordSet().asTable("FREQUENCIES");
331  Vector<Double> rstf;
332  t.keywordSet().get("RESTFREQS",rstf);
333  Bool canDo = True;
334  Unit u1("km/s");Unit u2("Hz");
335  if (Unit(un) == u1) {
336    Vector<Double> rstf;
337    t.keywordSet().get("RESTFREQS",rstf);
338    if (rstf.nelements() == 0) {
339        throw(AipsError("Can't set unit to km/s if no restfrequencies are specified"));
340    }
341  } else if (Unit(un) != u2 && un != "") {
342        throw(AipsError("Unit not conformant with Spectral Coordinates"));
343  }
344  t.rwKeywordSet().define("UNIT", un);
345//
346  MFrequency::Types mdr;
347  if (!MFrequency::getType(mdr, rfrm)) {
348   
349    Int a,b;const uInt* c;
350    const String* valid = MFrequency::allMyTypes(a, b, c);
351    String pfix = "Please specify a legal frame type. Types are\n";
352    throw(AipsError(pfix+(*valid)));
353  } else {
354    t.rwKeywordSet().define("REFFRAME",rfrm);
355  }
356//
357  MDoppler::Types dtype;
358  dpl.upcase();
359  if (!MDoppler::getType(dtype, dpl)) {
360    throw(AipsError("Doppler type unknown"));
361  } else {
362    t.rwKeywordSet().define("DOPPLER",dpl);
363  }
364}
365
366std::vector<double> SDMemTable::getAbcissa(Int whichRow) const
367{
368  std::vector<double> absc(nChan());
369  Vector<Double> absc1(nChan());
370  indgen(absc1);
371  ROArrayColumn<uInt> fid(table_, "FREQID");
372  Vector<uInt> v;
373  fid.get(whichRow, v);
374  uInt specidx = v(IFSel_);
375  SpectralCoordinate spc = getCoordinate(specidx);
376  Table t = table_.keywordSet().asTable("FREQUENCIES");
377
378  MDirection direct = getDirection(whichRow);
379
380  ROScalarColumn<Double> tme(table_, "TIME");
381  Double obstime;
382  tme.get(whichRow,obstime);
383  MVEpoch tm2(Quantum<Double>(obstime, Unit(String("d"))));
384  MEpoch::Types met = getTimeReference();
385  MEpoch epoch(tm2, met);
386
387  Vector<Double> antpos;
388  table_.keywordSet().get("AntennaPosition", antpos);
389  MVPosition mvpos(antpos(0),antpos(1),antpos(2));
390  MPosition pos(mvpos);
391  String sunit;
392  t.keywordSet().get("UNIT",sunit);
393  if (sunit == "") sunit = "pixel";
394  Unit u(sunit);
395  String frm;
396  t.keywordSet().get("REFFRAME",frm);
397  if (frm == "") frm = "TOPO";
398  String dpl;
399  t.keywordSet().get("DOPPLER",dpl);
400  if (dpl == "") dpl = "RADIO";
401  MFrequency::Types mtype;
402  if (!MFrequency::getType(mtype, frm)) {
403    cout << "Frequency type unknown assuming TOPO" << endl;       // SHould never happen
404    mtype = MFrequency::TOPO;
405  }
406  MDoppler::Types dtype;
407  if (!MDoppler::getType(dtype, dpl)) {
408    cout << "Doppler type unknown assuming RADIO" << endl;        // SHould never happen
409    dtype = MDoppler::RADIO;
410  }
411 
412  if (!spc.setReferenceConversion(mtype,epoch,pos,direct)) {
413    throw(AipsError("Couldn't convert frequency frame."));
414  }
415
416  if ( u == Unit("km/s") ) {
417    Vector<Double> rstf;
418    t.keywordSet().get("RESTFREQS",rstf);
419    if (rstf.nelements() > 0) {
420      if (rstf.nelements() >= nIF())
421        spc.selectRestFrequency(uInt(IFSel_));
422      spc.setVelocity(u.getName(),dtype);
423      Vector<Double> wrld;
424      spc.pixelToVelocity(wrld,absc1);
425      std::vector<double>::iterator it;
426      uInt i = 0;
427      for (it = absc.begin(); it != absc.end(); ++it) {
428        (*it) = wrld[i];
429        i++;
430      }
431    }
432  } else if (u == Unit("Hz")) {
433    Vector<String> wau(1); wau = u.getName();
434    spc.setWorldAxisUnits(wau);
435    std::vector<double>::iterator it;
436    Double tmp;
437    uInt i = 0;
438    for (it = absc.begin(); it != absc.end(); ++it) {
439      spc.toWorld(tmp,absc1[i]);
440      (*it) = tmp;
441      i++;
442    }
443
444  } else {
445    // assume channels/pixels
446    std::vector<double>::iterator it;
447    uInt i=0;
448    for (it = absc.begin(); it != absc.end(); ++it) {
449      (*it) = Double(i++);
450    }
451  }
452  return absc;
453}
454
455std::string SDMemTable::getAbcissaString(Int whichRow) const
456{
457  ROArrayColumn<uInt> fid(table_, "FREQID");
458  Table t = table_.keywordSet().asTable("FREQUENCIES");
459  String sunit;
460  t.keywordSet().get("UNIT",sunit);
461  if (sunit == "") sunit = "pixel";
462  Unit u(sunit);
463  Vector<uInt> v;
464  fid.get(whichRow, v);
465  uInt specidx = v(IFSel_);
466  SpectralCoordinate spc = getCoordinate(specidx);
467  String frm;
468  t.keywordSet().get("REFFRAME",frm);
469//
470  MFrequency::Types mtype;
471  if (!MFrequency::getType(mtype, frm)) {
472    cout << "Frequency type unknown assuming TOPO" << endl;
473    mtype = MFrequency::TOPO;
474  }
475  spc.setFrequencySystem(mtype);
476//
477  String dpl;
478  t.keywordSet().get("DOPPLER",dpl);
479  MDoppler::Types dtype;
480  MDoppler::getType(dtype, dpl);         // Can't fail
481//
482  String s = "Channel";
483  if (u == Unit("km/s")) {
484    spc.setVelocity(u.getName(), dtype);
485    s = CoordinateUtil::axisLabel(spc,0,True,True,True);
486  } else if (u == Unit("Hz")) {
487    Vector<String> wau(1);wau = u.getName();
488    spc.setWorldAxisUnits(wau);
489    s = CoordinateUtil::axisLabel(spc);
490  }
491  return s;
492}
493
494void SDMemTable::setSpectrum(std::vector<float> spectrum, int whichRow)
495{
496  ArrayColumn<Float> spec(table_, "SPECTRA");
497  Array<Float> arr;
498  spec.get(whichRow, arr);
499  if (spectrum.size() != arr.shape()(3)) {
500    throw(AipsError("Attempting to set spectrum with incorrect length."));
501  }
502
503  ArrayAccessor<Float, Axis<asap::BeamAxis> > aa0(arr);
504  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
505  ArrayAccessor<Float, Axis<asap::IFAxis> > aa1(aa0);
506  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
507  ArrayAccessor<Float, Axis<asap::PolAxis> > aa2(aa1);
508  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
509
510  std::vector<float>::iterator it = spectrum.begin();
511  for (ArrayAccessor<Float, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
512    (*i) = Float(*it);
513    it++;
514  }
515  spec.put(whichRow, arr);
516}
517
518void SDMemTable::getSpectrum(Vector<Float>& spectrum, Int whichRow) const
519{
520  ROArrayColumn<Float> spec(table_, "SPECTRA");
521  Array<Float> arr;
522  spec.get(whichRow, arr);
523  spectrum.resize(arr.shape()(3));
524  ArrayAccessor<Float, Axis<asap::BeamAxis> > aa0(arr);
525  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
526  ArrayAccessor<Float, Axis<asap::IFAxis> > aa1(aa0);
527  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
528  ArrayAccessor<Float, Axis<asap::PolAxis> > aa2(aa1);
529  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
530
531  ArrayAccessor<Float, Axis<asap::BeamAxis> > va(spectrum);
532  for (ArrayAccessor<Float, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
533    (*va) = (*i);
534    va++;
535  }
536}
537/*
538void SDMemTable::getMask(Vector<Bool>& mask, Int whichRow) const {
539  ROArrayColumn<uChar> spec(table_, "FLAGTRA");
540  Array<uChar> arr;
541  spec.get(whichRow, arr);
542  mask.resize(arr.shape()(3));
543
544  ArrayAccessor<uChar, Axis<asap::BeamAxis> > aa0(arr);
545  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
546  ArrayAccessor<uChar, Axis<asap::IFAxis> > aa1(aa0);
547  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
548  ArrayAccessor<uChar, Axis<asap::PolAxis> > aa2(aa1);
549  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
550
551  Bool useUserMask = ( chanMask_.size() == arr.shape()(3) );
552
553  ArrayAccessor<Bool, Axis<asap::BeamAxis> > va(mask);
554  std::vector<bool> tmp;
555  tmp = chanMask_; // WHY the fxxx do I have to make a copy here. The
556                   // iterator should work on chanMask_??
557  std::vector<bool>::iterator miter;
558  miter = tmp.begin();
559
560  for (ArrayAccessor<uChar, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
561    bool out =!static_cast<bool>(*i);
562    if (useUserMask) {
563      out = out && (*miter);
564      miter++;
565    }
566    (*va) = out;
567    va++;
568  }
569}
570*/
571MaskedArray<Float> SDMemTable::rowAsMaskedArray(uInt whichRow,
572                                                Bool useSelection) const
573{
574  ROArrayColumn<Float> spec(table_, "SPECTRA");
575  Array<Float> arr;
576  ROArrayColumn<uChar> flag(table_, "FLAGTRA");
577  Array<uChar> farr;
578  spec.get(whichRow, arr);
579  flag.get(whichRow, farr);
580  Array<Bool> barr(farr.shape());convertArray(barr, farr);
581  MaskedArray<Float> marr;
582  if (useSelection) {
583    ArrayAccessor<Float, Axis<asap::BeamAxis> > aa0(arr);
584    aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
585    ArrayAccessor<Float, Axis<asap::IFAxis> > aa1(aa0);
586    aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
587    ArrayAccessor<Float, Axis<asap::PolAxis> > aa2(aa1);
588    aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
589
590    ArrayAccessor<Bool, Axis<asap::BeamAxis> > baa0(barr);
591    baa0.reset(baa0.begin(uInt(beamSel_)));//go to beam
592    ArrayAccessor<Bool, Axis<asap::IFAxis> > baa1(baa0);
593    baa1.reset(baa1.begin(uInt(IFSel_)));// go to IF
594    ArrayAccessor<Bool, Axis<asap::PolAxis> > baa2(baa1);
595    baa2.reset(baa2.begin(uInt(polSel_)));// go to pol
596
597    Vector<Float> a(arr.shape()(3));
598    Vector<Bool> b(barr.shape()(3));
599    ArrayAccessor<Float, Axis<asap::BeamAxis> > a0(a);
600    ArrayAccessor<Bool, Axis<asap::BeamAxis> > b0(b);
601
602    ArrayAccessor<Bool, Axis<asap::ChanAxis> > j(baa2);
603    for (ArrayAccessor<Float, Axis<asap::ChanAxis> > i(aa2);
604         i != i.end(); ++i) {
605      (*a0) = (*i);
606      (*b0) = !(*j);
607      j++;
608      a0++;
609      b0++;
610    }
611    marr.setData(a,b);
612  } else {
613    marr.setData(arr,!barr);
614  }
615  return marr;
616}
617
618Float SDMemTable::getTsys(Int whichRow) const
619{
620  ROArrayColumn<Float> ts(table_, "TSYS");
621  Array<Float> arr;
622  ts.get(whichRow, arr);
623  Float out;
624  IPosition ip(arr.shape());
625  ip(0) = beamSel_;ip(1) = IFSel_;ip(2) = polSel_;ip(3)=0;
626  out = arr(ip);
627  return out;
628}
629
630MDirection SDMemTable::getDirection(Int whichRow, Bool refBeam) const
631{
632  MDirection::Types mdr = getDirectionReference();
633  ROArrayColumn<Double> dir(table_, "DIRECTION");
634  Array<Double> posit;
635  dir.get(whichRow,posit);
636  Vector<Double> wpos(2);
637  wpos[0] = posit(IPosition(2,beamSel_,0));
638  wpos[1] = posit(IPosition(2,beamSel_,1));
639  Quantum<Double> lon(wpos[0],Unit(String("rad")));
640  Quantum<Double> lat(wpos[1],Unit(String("rad")));
641  MDirection direct(lon, lat, mdr);
642  return direct;
643}
644
645SpectralCoordinate SDMemTable::getCoordinate(uInt whichIdx) const
646{
647 
648  Table t = table_.keywordSet().asTable("FREQUENCIES");
649  if (whichIdx > t.nrow() ) {
650    throw(AipsError("SDMemTable::getCoordinate - whichIdx out of range"));
651  }
652
653  Double rp,rv,inc;
654  String rf;
655  Vector<Double> vec;
656  ROScalarColumn<Double> rpc(t, "REFPIX");
657  ROScalarColumn<Double> rvc(t, "REFVAL");
658  ROScalarColumn<Double> incc(t, "INCREMENT");
659  t.keywordSet().get("RESTFREQS",vec);
660  t.keywordSet().get("BASEREFFRAME",rf);
661
662  MFrequency::Types mft;
663  if (!MFrequency::getType(mft, rf)) {
664    cerr << "Frequency type unknown assuming TOPO" << endl;
665    mft = MFrequency::TOPO;
666  }
667  rpc.get(whichIdx, rp);
668  rvc.get(whichIdx, rv);
669  incc.get(whichIdx, inc);
670  SpectralCoordinate spec(mft,rv,inc,rp);
671  if (vec.nelements() > 0)
672    spec.setRestFrequencies(vec);
673  return spec;
674}
675
676Bool SDMemTable::setCoordinate(const SpectralCoordinate& speccord,
677                               uInt whichIdx) {
678  Table t = table_.rwKeywordSet().asTable("FREQUENCIES");
679  if (whichIdx > t.nrow() ) {
680    throw(AipsError("SDMemTable::setCoordinate - coord no out of range"));
681  }
682  ScalarColumn<Double> rpc(t, "REFPIX");
683  ScalarColumn<Double> rvc(t, "REFVAL");
684  ScalarColumn<Double> incc(t, "INCREMENT");
685
686  rpc.put(whichIdx, speccord.referencePixel()[0]);
687  rvc.put(whichIdx, speccord.referenceValue()[0]);
688  incc.put(whichIdx, speccord.increment()[0]);
689
690  return True;
691}
692
693Int SDMemTable::nCoordinates() const
694{
695  return table_.keywordSet().asTable("FREQUENCIES").nrow();
696}
697
698void SDMemTable::setRestFreqs(std::vector<double> freqs,
699                              const std::string& theunit)
700{
701  Vector<Double> tvec(freqs);
702  Quantum<Vector<Double> > q(tvec, String(theunit));
703  tvec.resize();
704  tvec = q.getValue("Hz");
705  Table t = table_.keywordSet().asTable("FREQUENCIES");
706  t.rwKeywordSet().define("RESTFREQS",tvec);
707}
708
709std::vector<double> SDMemTable::getRestFreqs() const
710{
711  Table t = table_.keywordSet().asTable("FREQUENCIES");
712  Vector<Double> tvec;
713  t.keywordSet().get("RESTFREQS",tvec);
714  std::vector<double> stlout;
715  tvec.tovector(stlout);
716  return stlout; 
717}
718
719bool SDMemTable::putSDFreqTable(const SDFrequencyTable& sdft)
720{
721  TableDesc td("", "1", TableDesc::Scratch);
722  td.addColumn(ScalarColumnDesc<Double>("REFPIX"));
723  td.addColumn(ScalarColumnDesc<Double>("REFVAL"));
724  td.addColumn(ScalarColumnDesc<Double>("INCREMENT"));
725  SetupNewTable aNewTab("freqs", td, Table::New);
726  Table aTable (aNewTab, Table::Memory, sdft.length());
727  ScalarColumn<Double> sc0(aTable, "REFPIX");
728  ScalarColumn<Double> sc1(aTable, "REFVAL");
729  ScalarColumn<Double> sc2(aTable, "INCREMENT");
730  for (uInt i=0; i < sdft.length(); ++i) {
731    sc0.put(i,sdft.referencePixel(i));
732    sc1.put(i,sdft.referenceValue(i));
733    sc2.put(i,sdft.increment(i));
734  }
735  String rf = sdft.refFrame();
736  if (rf.contains("TOPO")) rf = "TOPO";
737
738  aTable.rwKeywordSet().define("BASEREFFRAME", rf);
739  aTable.rwKeywordSet().define("REFFRAME", rf);
740  aTable.rwKeywordSet().define("EQUINOX", sdft.equinox());
741  aTable.rwKeywordSet().define("UNIT", String(""));
742  aTable.rwKeywordSet().define("DOPPLER", String("RADIO"));
743  Vector<Double> rfvec;
744  String rfunit;
745  sdft.restFrequencies(rfvec,rfunit);
746  Quantum<Vector<Double> > q(rfvec, rfunit);
747  rfvec.resize();
748  rfvec = q.getValue("Hz");
749  aTable.rwKeywordSet().define("RESTFREQS", rfvec);
750  table_.rwKeywordSet().defineTable ("FREQUENCIES", aTable);
751  return True;
752}
753
754SDFrequencyTable SDMemTable::getSDFreqTable() const
755{
756  // TODO !!!!! implement this properly USE with care
757  const Table& t = table_.keywordSet().asTable("FREQUENCIES");
758  SDFrequencyTable sdft;
759  sdft.setLength(t.nrow());
760  return sdft;
761}
762
763bool SDMemTable::putSDContainer(const SDContainer& sdc)
764{
765  ScalarColumn<Double> mjd(table_, "TIME");
766  ScalarColumn<String> srcn(table_, "SRCNAME");
767  ScalarColumn<String> fldn(table_, "FIELDNAME");
768  ArrayColumn<Float> spec(table_, "SPECTRA");
769  ArrayColumn<uChar> flags(table_, "FLAGTRA");
770  ArrayColumn<Float> ts(table_, "TSYS");
771  ScalarColumn<Int> scan(table_, "SCANID");
772  ScalarColumn<Double> integr(table_, "INTERVAL");
773  ArrayColumn<uInt> freqid(table_, "FREQID");
774  ArrayColumn<Double> dir(table_, "DIRECTION");
775  ScalarColumn<Int> rbeam(table_, "REFBEAM");
776  ArrayColumn<Float> tcal(table_, "TCAL");
777  ScalarColumn<String> tcalt(table_, "TCALTIME");
778  ScalarColumn<Float> az(table_, "AZIMUTH");
779  ScalarColumn<Float> el(table_, "ELEVATION");
780  ScalarColumn<Float> para(table_, "PARANGLE");
781  ArrayColumn<String> hist(table_, "HISTORY");
782
783  uInt rno = table_.nrow();
784  table_.addRow();
785
786  mjd.put(rno, sdc.timestamp);
787  srcn.put(rno, sdc.sourcename);
788  fldn.put(rno, sdc.fieldname);
789  spec.put(rno, sdc.getSpectrum());
790  flags.put(rno, sdc.getFlags());
791  ts.put(rno, sdc.getTsys());
792  scan.put(rno, sdc.scanid);
793  integr.put(rno, sdc.interval);
794  freqid.put(rno, sdc.getFreqMap());
795  dir.put(rno, sdc.getDirection());
796  rbeam.put(rno, sdc.refbeam);
797  tcal.put(rno, sdc.tcal);
798  tcalt.put(rno, sdc.tcaltime);
799  az.put(rno, sdc.azimuth);
800  el.put(rno, sdc.elevation);
801  para.put(rno, sdc.parangle);
802  hist.put(rno, sdc.getHistory());
803
804  return true;
805}
806
807SDContainer SDMemTable::getSDContainer(uInt whichRow) const
808{
809  ROScalarColumn<Double> mjd(table_, "TIME");
810  ROScalarColumn<String> srcn(table_, "SRCNAME");
811  ROScalarColumn<String> fldn(table_, "FIELDNAME");
812  ROArrayColumn<Float> spec(table_, "SPECTRA");
813  ROArrayColumn<uChar> flags(table_, "FLAGTRA");
814  ROArrayColumn<Float> ts(table_, "TSYS");
815  ROScalarColumn<Int> scan(table_, "SCANID");
816  ROScalarColumn<Double> integr(table_, "INTERVAL");
817  ROArrayColumn<uInt> freqid(table_, "FREQID");
818  ROArrayColumn<Double> dir(table_, "DIRECTION");
819  ROScalarColumn<Int> rbeam(table_, "REFBEAM");
820  ROArrayColumn<Float> tcal(table_, "TCAL");
821  ROScalarColumn<String> tcalt(table_, "TCALTIME");
822  ROScalarColumn<Float> az(table_, "AZIMUTH");
823  ROScalarColumn<Float> el(table_, "ELEVATION");
824  ROScalarColumn<Float> para(table_, "PARANGLE");
825  ROArrayColumn<String> hist(table_, "HISTORY");
826
827  SDContainer sdc(nBeam(),nIF(),nPol(),nChan());
828  mjd.get(whichRow, sdc.timestamp);
829  srcn.get(whichRow, sdc.sourcename);
830  integr.get(whichRow, sdc.interval);
831  scan.get(whichRow, sdc.scanid);
832  fldn.get(whichRow, sdc.fieldname);
833  rbeam.get(whichRow, sdc.refbeam);
834  az.get(whichRow, sdc.azimuth);
835  el.get(whichRow, sdc.elevation);
836  para.get(whichRow, sdc.parangle);
837  Vector<Float> tc;
838  tcal.get(whichRow, tc);
839  sdc.tcal[0] = tc[0];sdc.tcal[1] = tc[1];
840  tcalt.get(whichRow, sdc.tcaltime);
841  Array<Float> spectrum;
842  Array<Float> tsys;
843  Array<uChar> flagtrum;
844  Vector<uInt> fmap;
845  Array<Double> direction;
846  Vector<String> histo;
847  spec.get(whichRow, spectrum);
848  sdc.putSpectrum(spectrum);
849  flags.get(whichRow, flagtrum);
850  sdc.putFlags(flagtrum);
851  ts.get(whichRow, tsys);
852  sdc.putTsys(tsys);
853  freqid.get(whichRow, fmap);
854  sdc.putFreqMap(fmap);
855  dir.get(whichRow, direction);
856  sdc.putDirection(direction);
857  hist.get(whichRow, histo);
858  sdc.putHistory(histo);
859  return sdc;
860}
861
862bool SDMemTable::putSDHeader(const SDHeader& sdh)
863{
864  table_.rwKeywordSet().define("nIF", sdh.nif);
865  table_.rwKeywordSet().define("nBeam", sdh.nbeam);
866  table_.rwKeywordSet().define("nPol", sdh.npol);
867  table_.rwKeywordSet().define("nChan", sdh.nchan);
868  table_.rwKeywordSet().define("Observer", sdh.observer);
869  table_.rwKeywordSet().define("Project", sdh.project);
870  table_.rwKeywordSet().define("Obstype", sdh.obstype);
871  table_.rwKeywordSet().define("AntennaName", sdh.antennaname);
872  table_.rwKeywordSet().define("AntennaPosition", sdh.antennaposition);
873  table_.rwKeywordSet().define("Equinox", sdh.equinox);
874  table_.rwKeywordSet().define("FreqRefFrame", sdh.freqref);
875  table_.rwKeywordSet().define("FreqRefVal", sdh.reffreq);
876  table_.rwKeywordSet().define("Bandwidth", sdh.bandwidth);
877  table_.rwKeywordSet().define("UTC", sdh.utc);
878  table_.rwKeywordSet().define("FluxUnit", sdh.fluxunit);
879  table_.rwKeywordSet().define("Epoch", sdh.epoch);
880  return true;
881}
882
883SDHeader SDMemTable::getSDHeader() const
884{
885  SDHeader sdh;
886  table_.keywordSet().get("nBeam",sdh.nbeam);
887  table_.keywordSet().get("nIF",sdh.nif);
888  table_.keywordSet().get("nPol",sdh.npol);
889  table_.keywordSet().get("nChan",sdh.nchan);
890  table_.keywordSet().get("Observer", sdh.observer);
891  table_.keywordSet().get("Project", sdh.project);
892  table_.keywordSet().get("Obstype", sdh.obstype);
893  table_.keywordSet().get("AntennaName", sdh.antennaname);
894  table_.keywordSet().get("AntennaPosition", sdh.antennaposition);
895  table_.keywordSet().get("Equinox", sdh.equinox);
896  table_.keywordSet().get("FreqRefFrame", sdh.freqref);
897  table_.keywordSet().get("FreqRefVal", sdh.reffreq);
898  table_.keywordSet().get("Bandwidth", sdh.bandwidth);
899  table_.keywordSet().get("UTC", sdh.utc);
900  table_.keywordSet().get("FluxUnit", sdh.fluxunit);
901  table_.keywordSet().get("Epoch", sdh.epoch);
902  return sdh;
903}
904void SDMemTable::makePersistent(const std::string& filename)
905{
906  table_.deepCopy(filename,Table::New);
907}
908
909Int SDMemTable::nScan() const {
910  Int n = 0;
911  ROScalarColumn<Int> scans(table_, "SCANID");
912  Int previous = -1;Int current=0;
913  for (uInt i=0; i< scans.nrow();i++) {
914    scans.getScalar(i,current);
915    if (previous != current) {
916      previous = current;
917      n++;
918    }
919  }
920  return n;
921}
922
923String SDMemTable::formatSec(Double x) const
924{
925  Double xcop = x;
926  MVTime mvt(xcop/24./3600.);  // make days
927 
928  if (x < 59.95)
929    return  String("      ") + mvt.string(MVTime::TIME_CLEAN_NO_HM, 7)+"s";
930  else if (x < 3599.95)
931    return String("   ") + mvt.string(MVTime::TIME_CLEAN_NO_H,7)+" ";
932  else {
933    ostringstream oss;
934    oss << setw(2) << std::right << setprecision(1) << mvt.hour();
935    oss << ":" << mvt.string(MVTime::TIME_CLEAN_NO_H,7) << " ";
936    return String(oss);
937  }   
938};
939
940String SDMemTable::formatDirection(const MDirection& md) const
941{
942  Vector<Double> t = md.getAngle(Unit(String("rad"))).getValue();
943  Int prec = 7;
944
945  MVAngle mvLon(t[0]);
946  String sLon = mvLon.string(MVAngle::TIME,prec);
947  MVAngle mvLat(t[1]);
948  String sLat = mvLat.string(MVAngle::ANGLE+MVAngle::DIG2,prec);
949
950   return sLon + String(" ") + sLat;
951}
952
953
954std::string SDMemTable::getFluxUnit() const
955{
956  String tmp;
957  table_.keywordSet().get("FluxUnit", tmp);
958  return tmp;
959}
960
961void SDMemTable::setFluxUnit(const std::string& unit)
962{
963  String tmp(unit);
964  Unit tU(tmp);
965  if (tU==Unit("K") || tU==Unit("Jy")) {
966     table_.rwKeywordSet().define(String("FluxUnit"), tmp);
967  } else {
968     throw AipsError("Illegal unit - must be compatible with Jy or K");
969  }
970}
971
972
973void SDMemTable::setInstrument(const std::string& name)
974{
975  Bool throwIt = True;
976  Instrument ins = convertInstrument (name, throwIt);
977  String nameU(name);
978  nameU.upcase();
979  table_.rwKeywordSet().define(String("AntennaName"), nameU);
980}
981
982std::string SDMemTable::summary() const  {
983  ROScalarColumn<Int> scans(table_, "SCANID");
984  ROScalarColumn<String> srcs(table_, "SRCNAME");
985
986  // get number of integrations per scan
987  int cIdx = 0;
988  int idx = 0;
989  int scount = 0;
990  std::vector<int> cycles;
991  for (uInt i=0; i<scans.nrow();++i) {
992    while (idx == cIdx && i<scans.nrow()) {
993      scans.getScalar(++i,cIdx);
994      ++scount;
995    }
996    idx = cIdx;
997    cycles.push_back(scount);
998    scount=0;
999    --i;
1000  } 
1001
1002
1003  ostringstream oss;
1004  oss << endl;
1005  oss << "--------------------------------------------------" << endl;
1006  oss << " Scan Table Summary" << endl;
1007  oss << "--------------------------------------------------" << endl;
1008  oss.flags(std::ios_base::left);
1009  oss << setw(15) << "Beams:" << setw(4) << nBeam() << endl
1010      << setw(15) << "IFs:" << setw(4) << nIF() << endl
1011      << setw(15) << "Polarisations:" << setw(4) << nPol() << endl
1012      << setw(15) << "Channels:"  << setw(4) << nChan() << endl;
1013  oss << endl;
1014  String tmp;
1015  table_.keywordSet().get("Observer", tmp);
1016  oss << setw(15) << "Observer:" << tmp << endl;
1017  oss << setw(15) << "Obs Date:" << getTime(-1,True) << endl;
1018  table_.keywordSet().get("Project", tmp);
1019  oss << setw(15) << "Project:" << tmp << endl;
1020  table_.keywordSet().get("Obstype", tmp);
1021  oss << setw(15) << "Obs. Type:" << tmp << endl;
1022  table_.keywordSet().get("AntennaName", tmp);
1023  oss << setw(15) << "Antenna Name:" << tmp << endl;
1024  table_.keywordSet().get("FluxUnit", tmp);
1025  oss << setw(15) << "Flux Unit:" << tmp << endl;
1026  Table t = table_.keywordSet().asTable("FREQUENCIES");
1027  Vector<Double> vec;
1028  t.keywordSet().get("RESTFREQS",vec);
1029  oss << setw(15) << "Rest Freqs:";
1030  if (vec.nelements() > 0) {
1031      oss << setprecision(0) << vec << " [Hz]" << endl;
1032  } else {
1033      oss << "None set" << endl;
1034  }
1035  oss << setw(15) << "Abcissa:" << getAbcissaString() << endl;
1036  oss << setw(15) << "Cursor:" << "Beam[" << getBeam() << "] "
1037      << "IF[" << getIF() << "] " << "Pol[" << getPol() << "]" << endl;
1038  oss << endl;
1039  uInt count = 0;
1040  String name;
1041  Int previous = -1;Int current=0;
1042  Int integ = 0;
1043  String dirtype ="Position ("+
1044    MDirection::showType(getDirectionReference())+
1045    ")";
1046  oss << setw(6) << "Scan"
1047      << setw(15) << "Source"
1048      << setw(26) << dirtype
1049      << setw(10) << "Time"
1050      << setw(13) << "Integration" << endl;
1051  oss << "-------------------------------------------------------------------------------" << endl;
1052 
1053  std::vector<int>::iterator it = cycles.begin();
1054  for (uInt i=0; i< scans.nrow();i++) {
1055    scans.getScalar(i,current);
1056    if (previous != current) {
1057      srcs.getScalar(i,name);
1058      previous = current;
1059      String t = formatSec(Double(getInterval(i)));
1060      String posit = formatDirection(getDirection(i,True));
1061      oss << setw(6) << count
1062          << setw(15) << name
1063          << setw(26) << posit
1064          << setw(10) << getTime(i,False)
1065          << setw(3) << std::right << *it << " x "
1066          << setw(10)
1067          << t << std::left << endl;
1068      count++;
1069      it++;
1070    } else {
1071      integ++;
1072    }
1073  }
1074  oss << endl;
1075  oss << "Table contains " << table_.nrow() << " integration(s)." << endl;
1076  oss << "in " << count << " scan(s)." << endl;
1077  oss << "-------------------------------------------------------------------------------";
1078  return String(oss);
1079}
1080
1081Int SDMemTable::nBeam() const
1082{
1083  Int n;
1084  table_.keywordSet().get("nBeam",n);
1085  return n;
1086}
1087Int SDMemTable::nIF() const {
1088  Int n;
1089  table_.keywordSet().get("nIF",n);
1090  return n;
1091}
1092Int SDMemTable::nPol() const {
1093  Int n;
1094  table_.keywordSet().get("nPol",n);
1095  return n;
1096}
1097Int SDMemTable::nChan() const {
1098  Int n;
1099  table_.keywordSet().get("nChan",n);
1100  return n;
1101}
1102bool SDMemTable::appendHistory(const std::string& hist, int whichRow)
1103{
1104  ArrayColumn<String> histo(table_, "HISTORY");
1105  Vector<String> history;
1106  histo.get(whichRow, history);
1107  history.resize(history.nelements()+1,True);
1108  history[history.nelements()-1] = hist;
1109  histo.put(whichRow, history);
1110}
1111
1112std::vector<std::string> SDMemTable::history(int whichRow) const
1113{
1114  ROArrayColumn<String> hist(table_, "HISTORY");
1115  Vector<String> history;
1116  hist.get(whichRow, history);
1117  std::vector<std::string> stlout;
1118  // there is no Array<String>.tovector(std::vector<std::string>), so
1119  // do it by hand
1120  for (uInt i=0; i<history.nelements(); ++i) {
1121    stlout.push_back(history[i]);
1122  }
1123  return stlout;
1124}
1125/*
1126void SDMemTable::maskChannels(const std::vector<Int>& whichChans ) {
1127
1128  std::vector<int>::iterator it;
1129  ArrayAccessor<uChar, Axis<asap::PolAxis> > j(flags_);
1130  for (it = whichChans.begin(); it != whichChans.end(); it++) {
1131    j.reset(j.begin(uInt(*it)));
1132    for (ArrayAccessor<uChar, Axis<asap::BeamAxis> > i(j); i != i.end(); ++i) {
1133      for (ArrayAccessor<uChar, Axis<asap::IFAxis> > ii(i); ii != ii.end(); ++ii) {
1134        for (ArrayAccessor<uChar, Axis<asap::ChanAxis> > iii(ii);
1135             iii != iii.end(); ++iii) {
1136          (*iii) =
1137        }
1138      }
1139    }
1140  }
1141
1142}
1143*/
1144void SDMemTable::flag(int whichRow)
1145{
1146  ArrayColumn<uChar> spec(table_, "FLAGTRA");
1147  Array<uChar> arr;
1148  spec.get(whichRow, arr);
1149
1150  ArrayAccessor<uChar, Axis<asap::BeamAxis> > aa0(arr);
1151  aa0.reset(aa0.begin(uInt(beamSel_)));//go to beam
1152  ArrayAccessor<uChar, Axis<asap::IFAxis> > aa1(aa0);
1153  aa1.reset(aa1.begin(uInt(IFSel_)));// go to IF
1154  ArrayAccessor<uChar, Axis<asap::PolAxis> > aa2(aa1);
1155  aa2.reset(aa2.begin(uInt(polSel_)));// go to pol
1156
1157  for (ArrayAccessor<uChar, Axis<asap::ChanAxis> > i(aa2); i != i.end(); ++i) {
1158    (*i) = uChar(True);
1159  }
1160
1161  spec.put(whichRow, arr);
1162}
1163
1164MDirection::Types SDMemTable::getDirectionReference() const
1165{ 
1166  Float eq;
1167  table_.keywordSet().get("Equinox",eq);
1168  std::map<float,string> mp;
1169  mp[2000.0] = "J2000";
1170  mp[1950.0] = "B1950";
1171  MDirection::Types mdr;
1172  if (!MDirection::getType(mdr, mp[eq])) {   
1173    mdr = MDirection::J2000;
1174    cerr  << "Unknown equinox using J2000" << endl;
1175  }
1176//
1177  return mdr;
1178}
1179
1180MEpoch::Types SDMemTable::getTimeReference () const
1181{
1182  MEpoch::Types met;
1183  String ep;
1184  table_.keywordSet().get("Epoch",ep);
1185  if (!MEpoch::getType(met, ep)) {
1186    cerr << "Epoch type uknown - using UTC" << endl;
1187    met = MEpoch::UTC;
1188  }
1189//
1190  return met;
1191}
1192
1193
1194Instrument SDMemTable::convertInstrument (const String& instrument,
1195                                          Bool throwIt)
1196{
1197   String t(instrument);
1198   t.upcase();
1199//
1200   Instrument inst = asap::UNKNOWN;
1201   if (t==String("TID")) {
1202      inst = TIDBINBILLA;
1203   } else if (t==String("ATPKSMB")) {
1204      inst = PKSMULTIBEAM;
1205   } else if (t==String("ATPKSSB")) {
1206      inst = PKSSINGLEBEAM;
1207   } else if (t==String("MOPRA")) {
1208      inst = MOPRA;
1209   } else {
1210      if (throwIt) {
1211         throw AipsError("Unrecognized instrument - use function scan.set_instrument to set");
1212      }
1213   }
1214   return inst;
1215}
1216
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