model_ring Class Reference

Defines a concentrid ring model based on the model_visibility_amplitude, model_closure_phase, and model_closure_amplitude classes. More...

#include "model/model_ring.h"

Inheritance diagram for model_ring:

Collaboration diagram for model_ring:

Public Member Functions
virtual size_t	size () const
virtual void	generate_model (std::vector< double > parameters)
virtual double	visibility_amplitude (datum_visibility_amplitude &d, double acc)
virtual double	closure_phase (datum_closure_phase &d, double acc)
virtual double	closure_amplitude (datum_closure_amplitude &d, double acc)
Public Member Functions inherited from model_visibility_amplitude
virtual void	set_mpi_communicator (MPI_Comm comm)
	Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI.
Public Member Functions inherited from model_closure_phase
virtual void	set_mpi_communicator (MPI_Comm comm)
	Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI.
Public Member Functions inherited from model_closure_amplitude
virtual void	set_mpi_communicator (MPI_Comm comm)
	Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI.

Private Member Functions
double	BesselJ1 (double x)
	Calculates the Bessel Function J1(x)
std::complex< double >	complex_visibility (double u, double v)
	Calculates the complex visibility amplitude.

Private Attributes
double	_V0
	Total flux of the ring.
double	_Rext
	Radius of the larger (outer) disk.
double	_Rint
	Radius of the smaller (inner) disk.

Additional Inherited Members
Protected Attributes inherited from model_visibility_amplitude
MPI_Comm	_comm
Protected Attributes inherited from model_closure_phase
MPI_Comm	_comm
Protected Attributes inherited from model_closure_amplitude
MPI_Comm	_comm

Detailed Description

The concentric ring image is defined by the radius of the external disc, the radius of the innner disc, and an overall flux normalization. Note that this is not derived from model_image because there is no meaning for the position angle. Parameter list:

• parameters[0]: Total flux in Jy.
• parameters[1]: Overall (outer) radius of the ring.
• parameters[2]: \( \psi \) = The relative thickness.

Member Function Documentation

double closure_amplitude ( datum_closure_amplitude &  d, double  acc  )

virtual

Returns closure amplitude computed from the image given a datum_closure_phase object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value. Note that this can be redefined in child classes.

Implements model_closure_amplitude.

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double closure_phase ( datum_closure_phase &  d, double  acc  )

virtual

Returns closure phase in degrees computed from the image given a datum_closure_phase object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value.

Implements model_closure_phase.

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void generate_model ( std::vector< double >  parameters )

virtual

A one-time generate function that permits model construction prior to calling the visibility_amplitude, closure_phase, etc. for each datum. Takes a vector of parameters.

Implements model_closure_amplitude.

virtual size_t size ( ) const

inlinevirtual

User-supplied function that returns the number of the parameters the model expects

Implements model_closure_amplitude.

double visibility_amplitude ( datum_visibility_amplitude &  d, double  acc  )

virtual

Returns visibility ampitudes in Jy computed from the image given a datum_visibility_amplitude object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value. Note that this is redefined to accomodate the possibility of using the analytical computation.

Implements model_visibility_amplitude.

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The documentation for this class was generated from the following files:

• model/model_ring.h
• model/model_ring.cpp