casa::refim::ComponentFTMachine Class Reference

ComponentFTMachine: a abstract base class defining the interface for a Fourier Transform Machine to be used in the SkyEquation for the transformation of SkyComponents. More...

#include <ComponentFTMachine.h>

Inheritance diagram for casa::refim::ComponentFTMachine:

Public Member Functions
	ComponentFTMachine ()
	ComponentFTMachine (const ComponentFTMachine &other)
ComponentFTMachine &	operator= (const ComponentFTMachine &other)
virtual	~ComponentFTMachine ()
virtual void	get (vi::VisBuffer2 &vb, SkyComponent &component, casacore::Int row=-1)=0
	Get actual coherence : this is the only virtual method. More...
virtual void	get (vi::VisBuffer2 &vb, const ComponentList &componentList, casacore::Int row=-1)=0
	Get actual coherence : this is the other only virtual method. More...
void	rotateUVW (casacore::Matrix< casacore::Double > &uvw, casacore::Vector< casacore::Double > &dphase, const vi::VisBuffer2 &vb, const casacore::MDirection &mDesired)
	Rotate the uvw from the observed phase center to the desired phase center. More...
void	rotateUVW (casacore::Double *&uvw, casacore::Double *&dphase, const casacore::Int nrows, const vi::VisBuffer2 &vb, const casacore::MDirection &mDesired)
	A version that use pointers to contigous matrix and vector. More...
void	setnumthreads (const casacore::Int numthreads)
	Set number of threads to use when predicting. More...

Protected Member Functions
casacore::LogIO &	logIO ()
virtual void	ok ()

Protected Attributes
casacore::LogIO	logIO_p
casacore::MPosition	mLocation_p
	Default Position used for phase rotations. More...
casacore::Int	numthreads_p

Detailed Description

ComponentFTMachine: a abstract base class defining the interface for a Fourier Transform Machine to be used in the SkyEquation for the transformation of SkyComponents.

Intended use:

Public interface

Prerequisite

• SkyModel module
• SkyEquation module
• VisBuffer module
• SkyComponent class

Etymology

FTMachine is a Machine for Fourier Transforms

Synopsis

The SkyEquation needs to be able to perform Fourier transforms on visibility data. FTMachine allows efficient Fourier Transform processing using a VisBuffer which encapsulates a chunk of visibility (typically all baselines for one time) together with all the information needed for processing (e.g. UVW coordinates).

Example

A simple example of an ComponentFTMachine is found in SimpleComponentFTMachine. See the example for SkyModel.

Motivation

Define an interface to allow efficient processing of chunks of visibility data

Definition at line 103 of file ComponentFTMachine.h.

Constructor & Destructor Documentation

casa::refim::ComponentFTMachine::ComponentFTMachine

(

)

casa::refim::ComponentFTMachine::ComponentFTMachine

(

const ComponentFTMachine &

other

)

virtual casa::refim::ComponentFTMachine::~ComponentFTMachine ( )

virtual

Member Function Documentation

virtual void casa::refim::ComponentFTMachine::get ( vi::VisBuffer2 &  vb, SkyComponent &  component, casacore::Int  row = -1  )

pure virtual

Get actual coherence : this is the only virtual method.

Implemented in casa::refim::SimpleComponentFTMachine.

virtual void casa::refim::ComponentFTMachine::get ( vi::VisBuffer2 &  vb, const ComponentList &  componentList, casacore::Int  row = -1  )

pure virtual

Get actual coherence : this is the other only virtual method.

Implemented in casa::refim::SimpleComponentFTMachine.

casacore::LogIO& casa::refim::ComponentFTMachine::logIO ( )

protected

virtual void casa::refim::ComponentFTMachine::ok ( )

protectedvirtual

ComponentFTMachine& casa::refim::ComponentFTMachine::operator=

(

const ComponentFTMachine &

other

)

void casa::refim::ComponentFTMachine::rotateUVW	(	casacore::Matrix< casacore::Double > &	uvw,
		casacore::Vector< casacore::Double > &	dphase,
		const vi::VisBuffer2 &	vb,
		const casacore::MDirection &	mDesired
	)

Rotate the uvw from the observed phase center to the desired phase center.

void casa::refim::ComponentFTMachine::rotateUVW	(	casacore::Double *&	uvw,
		casacore::Double *&	dphase,
		const casacore::Int	nrows,
		const vi::VisBuffer2 &	vb,
		const casacore::MDirection &	mDesired
	)

A version that use pointers to contigous matrix and vector.

void casa::refim::ComponentFTMachine::setnumthreads

(

const casacore::Int

numthreads

)

Set number of threads to use when predicting.

Setting it to -1 basically tell openmp to use the number it can get

Member Data Documentation

casacore::LogIO casa::refim::ComponentFTMachine::logIO_p

protected

Definition at line 131 of file ComponentFTMachine.h.

casacore::MPosition casa::refim::ComponentFTMachine::mLocation_p

protected

Default Position used for phase rotations.

Definition at line 136 of file ComponentFTMachine.h.

casacore::Int casa::refim::ComponentFTMachine::numthreads_p

protected

Definition at line 139 of file ComponentFTMachine.h.

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

• casa/code/synthesis/TransformMachines2/ComponentFTMachine.h