casa6

//# VisibilityIterator2.cc: Step through MeasurementEquation by visibility

//# Copyright (C) 1996-2012

//# Associated Universities, Inc. Washington DC, USA.

//#

//# This library is free software; you can redistribute it and/or modify it

//# under the terms of the GNU Library General Public License as published by

//# the Free Software Foundation; either version 2 of the License, or (at your

//# option) any later version.

//#

//# This library is distributed in the hope that it will be useful, but WITHOUT

//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

//# FITNESS FOR A PARTICULAR PURPOSE.  See the !GNU Library General Public

//# License for more details.

//#

//# You should have received a copy of the GNU Library General Public License

//# along with this library; if not, write to the Free Software Foundation,

//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.

//#

//# Correspondence concerning AIPS++ should be addressed as follows:

//#        Internet email: aips2-request@nrao.edu.

//#        Postal address: AIPS++ Project Office

//#                        National Radio Astronomy Observatory

//#                        520 Edgemont Road

//#                        Charlottesville, VA 22903-2475 USA

//#

//# $Id: VisibilityIterator2.cc,v 19.15 2006/02/01 01:25:14 kgolap Exp $

​

#include <tuple>

#include <casacore/casa/Arrays.h>

#include <casacore/casa/BasicSL/Constants.h>

#include <casacore/casa/Containers/Record.h>

#include <casacore/casa/Exceptions.h>

#include <casacore/casa/Quanta/MVTime.h>

#include <casacore/casa/System/AipsrcValue.h>

#include <casacore/casa/Utilities.h>

#include <casacore/ms/MeasurementSets.h>

#include <casacore/ms/MeasurementSets/MSColumns.h>

#include <casacore/ms/MSSel/MSSelection.h>

#include <casacore/ms/MSSel/MSSpwIndex.h>

#include <casacore/scimath/Mathematics/InterpolateArray1D.h>

//#include <msvis/MSVis/StokesVector.h>

#include <stdcasa/UtilJ.h>

#include <msvis/MSVis/MeasurementSet2.h>

#include <msvis/MSVis/MSUtil.h>

#include <msvis/MSVis/MSIter2.h>

#include <msvis/MSVis/SpectralWindow.h>

#include <msvis/MSVis/ViFrequencySelection.h>

#include <msvis/MSVis/VisBuffer2.h>

#include <msvis/MSVis/VisBufferComponents2.h>

#include <msvis/MSVis/VisibilityIterator2.h>

#include <msvis/MSVis/VisibilityIteratorImpl2.h>

#include <msvis/MSVis/PointingDirectionCache.h>

#include <msvis/MSVis/VisModelDataI.h>

#include <casacore/tables/Tables/ColDescSet.h>

#include <casacore/tables/Tables/ArrayColumn.h>

#include <casacore/tables/DataMan/IncrStManAccessor.h>

#include <casacore/tables/DataMan/StandardStManAccessor.h>

#include <casacore/tables/Tables/TableDesc.h>

#include <casacore/tables/Tables/TableRecord.h>

#include <casacore/tables/DataMan/TiledStManAccessor.h>

​

#include <cassert>

#include <algorithm>

#include <limits>

#include <memory>

#include <map>

#include <vector>

​

using std::make_pair;

using namespace casacore;

using namespace casa::vi;

using namespace std;

​

using namespace casacore;

namespace casa { //# NAMESPACE CASA - BEGIN

​

namespace vi {

​

Bool

operator!=(const Slice & a, const Slice & b)

{

    Bool result = a.start() != b.start()||

        a.length() != b.length() ||

        a.inc() != b.inc();

​

    return result;

}

​

// ChannelSubslicer - represents a single selection from a DATA matrix

//

// Typically the ChannelSubslicer uses selects elements from the DATA matrix in