Line data    Source code

       1             : //# SpectralElement.h: Describes (a set of related) spectral lines
       2             : //# Copyright (C) 2001,2003,2004
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //#
       5             : //# This library is free software; you can redistribute it and/or modify it
       6             : //# under the terms of the GNU Library General Public License as published by
       7             : //# the Free Software Foundation; either version 2 of the License, or (at your
       8             : //# option) any later version.
       9             : //#
      10             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      11             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library General Public License
      16             : //# along with this library; if not, write to the Free Software Foundation,
      17             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      18             : //#
      19             : //# Correspondence concerning AIPS++ should be addressed as follows:
      20             : //#        Internet email: casa-feedback@nrao.edu.
      21             : //#        Postal address: AIPS++ Project Office
      22             : //#                        National Radio Astronomy Observatory
      23             : //#                        520 Edgemont Road
      24             : //#                        Charlottesville, VA 22903-2475 USA
      25             : //#
      26             : //#
      27             : 
      28             : #ifndef COMPONENTS_LORENTZIANSPECTRALELEMENT_H
      29             : #define COMPONENTS_LORENTZIANSPECTRALELEMENT_H
      30             : 
      31             : #include <components/SpectralComponents/PCFSpectralElement.h>
      32             : 
      33             : namespace casa { //# NAMESPACE CASA - BEGIN
      34             : 
      35             : // <summary>
      36             : // Describes a single Lorentzian spectral profile
      37             : // </summary>
      38             : 
      39             : // <use visibility=export>
      40             : 
      41             : // <reviewed reviewer="" date="yyyy/mm/dd" tests="tSpectralFit" demos="">
      42             : // </reviewed>
      43             : 
      44             : // <prerequisite>
      45             : //   <li> <linkto module=SpectralElement>SpectralElement</linkto> module
      46             : // </prerequisite>
      47             : //
      48             : // <etymology>
      49             : // From Lorentzian and spectral profile and element
      50             : // </etymology>
      51             : //
      52             : // <synopsis>
      53             : // The LorentzianSpectralElement class describes a Lorentzian spectral profile.
      54             : // </synopsis>
      55             : //
      56             : // <example>
      57             : // </example>
      58             : //
      59             : // <motivation>
      60             : // To have a container for data descrbing a Lorentzian spectral profile for fitting to an observed spectrum
      61             : // </motivation>
      62             : 
      63             : class LorentzianSpectralElement : public PCFSpectralElement {
      64             : public:
      65             : 
      66             : 
      67             : 
      68             :         // Construct with given type and values
      69             :         // <thrown>
      70             :         //   <li> casacore::AipsError if fwhm == 0.0 or amp == 0.0
      71             :         // </thrown>
      72             :         LorentzianSpectralElement(
      73             :                 const casacore::Double ampl, const casacore::Double center,
      74             :                 const casacore::Double fwhm
      75             :         );
      76             : 
      77             :         LorentzianSpectralElement(const casacore::Vector<casacore::Double>& param);
      78             : 
      79             :         // Copy constructor (deep copy)
      80             :         LorentzianSpectralElement(const LorentzianSpectralElement& other);
      81             : 
      82             :         ~LorentzianSpectralElement();
      83             : 
      84             :         SpectralElement* clone() const;
      85             : 
      86             :         // Assignment (copy semantics)
      87             :         LorentzianSpectralElement& operator=(const LorentzianSpectralElement& other);
      88             : 
      89           0 :         void setFWHM(casacore::Double fwhm) { setWidth(fwhm); }
      90             : 
      91         300 :         casacore::Double getFWHM() const { return getWidth(); }
      92             : 
      93         100 :         casacore::Double getFWHMErr() const { return getWidthErr(); }
      94             : 
      95             :         // get the integral of the function
      96             :         casacore::Double getIntegral() const;
      97             : 
      98             : private:
      99             :         // has amp = 1, center = 0, and fwhm = 1
     100             :                 LorentzianSpectralElement();
     101             : 
     102             : };
     103             : 
     104             : std::ostream &operator<<(std::ostream& os, const LorentzianSpectralElement& elem);
     105             : 
     106             : } //# NAMESPACE CASA - END
     107             : 
     108             : #endif