MSDopplerUtil.h

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// # MSDopplerUtil.h: utility class for MS Doppler tracking information
// # Copyright (C) 2000,2003
// # 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: casa-feedback@nrao.edu.
// #        Postal address: AIPS++ Project Office
// #                        National Radio Astronomy Observatory
// #                        520 Edgemont Road
// #                        Charlottesville, VA 22903-2475 USA
 
#ifndef MS_MSDOPPLERUTIL_H
#define MS_MSDOPPLERUTIL_H
 
#include <casacore/casa/aips.h>
#include <casacore/ms/MeasurementSets/MeasurementSet.h>
 
namespace casacore {  // # NAMESPACE CASACORE - BEGIN
 
// <summary>
// A utility class for MS Doppler tracking information
// </summary>
//
// <use visibility=export>
//
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
 
// <prerequisite>
//   <li> MeasurementSet
//   <li> MSDoppler
// </prerequisite>
//
// <etymology>
// From "MeasurementSet", "Doppler" and "utility".
// </etymology>
//
// <synopsis>
// This class provides utilities for handling Doppler tracking
// information in a MeasurementSet.
// </synopsis>
//
// <example>
// </example>
//
// <motivation>
// Collect all utilities for handling MS Doppler tracking information.
// </motivation>
//
// <thrown>
//    <li>
//    <li>
// </thrown>
//
// <todo asof="2000/09/01">
//   <li> averaging over other indices.
// </todo>
 
class MSDopplerUtil {
 public:
  // Construct from an existing MeasurementSet
  MSDopplerUtil(const MeasurementSet& ms);
 
  // Null destructor
  ~MSDopplerUtil();
 
  // Retrieve a list of all rest frequencies used for a given
  // spectral window id and field id.
  // Note that the output vector combines information for multiple spectral lines
  // and (unlikely) multiple source table entries.
  // If the doppler sub table doesn't exist, the information is
  // retrieved from directly from the source sub table.
  Bool dopplerInfo(Vector<Double>& restFrequency, Int spwId, Int fieldId);
 
 private:
  // Prohibit null constructor, copy constructor and assignment for now
  MSDopplerUtil();
  MSDopplerUtil& operator=(const MSDopplerUtil&);
  MSDopplerUtil(const MSDopplerUtil&);
 
  // Underlying MeasurementSet
  MeasurementSet ms_p;
};
 
}  // namespace casacore
 
#endif