#include <VisBufferUtil.h>

Public Member Functions
	VisBufferUtil ()
	Empty Constructor. More...

	VisBufferUtil (const VisBuffer &vb)
	Construct from a VisBuffer (sets a casacore::MeasFrame) More...

	VisBufferUtil (const vi::VisBuffer2 &vb)
	Same as above but with VisBuffer2; It has to be attached to a VisIter2 as the frame is determined that way otherwise use one of the constructors below or the empty constructor above. More...

	VisBufferUtil (const vi::VisibilityIterator2 &iter)
	Construct with the vi2 to get access to the ms to define frame. More...

	VisBufferUtil (const casacore::MeasFrame &mframe)

void	makePSFVisBuffer (VisBuffer &vb)
	Make PSF VisBuffer. More...

casacore::Bool	interpolateFrequency (casacore::Cube< casacore::Complex > &data, casacore::Cube< casacore::Bool > &flags, const VisBuffer &vb, const casacore::Vector< casacore::Float > &outFreqGrid, const casacore::MS::PredefinedColumns whichCol=casacore::MS::DATA, const casacore::MFrequency::Types freqFrame=casacore::MFrequency::LSRK, const casacore::InterpolateArray1D< casacore::Float, casacore::Complex >::InterpolationMethod interp=(casacore::InterpolateArray1D< casacore::Float, casacore::Complex >::nearestNeighbour))
	Regrid the data on a new frequency grid (defined by outFreqGrid), on the frequency frame (defined by freqFrame). More...

void	convertFrequency (casacore::Vector< casacore::Double > &outFreq, const VisBuffer &vb, const casacore::MFrequency::Types freqFrame)
	Converts the frequency in this visbuffer to the frame requested. More...

void	convertFrequency (casacore::Vector< casacore::Double > &outFreq, const vi::VisBuffer2 &vb, const casacore::MFrequency::Types freqFrame)
	This one is just to test VisBuffer2 internal conversions. More...

void	toVelocity (casacore::Vector< casacore::Double > &outVel, const VisBuffer &vb, const casacore::MFrequency::Types freqFrame, const casacore::MVFrequency restFreq, const casacore::MDoppler::Types veldef)
	Converts the frequency in this VisBuffer to velocity in the frame/def requested. More...

void	toVelocity (casacore::Vector< casacore::Double > &outVel, const vi::VisBuffer2 &vb, const casacore::MFrequency::Types freqFrame, const casacore::MVFrequency restFreq, const casacore::MDoppler::Types veldef, const casacore::Int row=0)
	Converts the frequencies on given row of VisBuffer2 to velocity in the frame/def requested. More...

void	toVelocity (casacore::Vector< casacore::Double > &outVel, const vi::VisBuffer2 &vb, const vi::VisibilityIterator2 &iter, const casacore::MFrequency::Types freqFrame, const casacore::MVFrequency restFreq, const casacore::MDoppler::Types veldef, const casacore::Int row=0)
	same as above but can be a detached Visbuffer ...the iterator is used explicitly to get some info like direction from field table and frame from spectral window table More...

get the velocity values for the frequencies passed in *void	toVelocity (casacore::Vector< casacore::Double > &outVel, const casacore::MFrequency::Types outfreqFrame, const casacore::Vector< casacore::Double > &inFreq, const casacore::MFrequency::Types inFreqFrame, const casacore::MEpoch &ep, const casacore::MDirection &dir, const casacore::MVFrequency restFreq, const casacore::MDoppler::Types veldef)
	for the epoch and direction. More...

casacore::Bool	rotateUVW (const vi::VisBuffer2 &vb, const casacore::MDirection &desiredDir, casacore::Matrix< casacore::Double > &uvw, casacore::Vector< casacore::Double > &dphase)
	Rotate the uvw in the vb along with giving the phase needed to convert the visibilities to a new phasecenter will return a false if it is a NoOP...don't need then to waste time applying the phasor etc. More...

casacore::MDirection	getPointingDir (const VisBuffer &vb, const casacore::Int antid, const casacore::Int row)
	get the pointing direction for a given integration and antenna id will cache it for large pointing table specially so that it can be reused pronto More...

casacore::MDirection	getPointingDir (const vi::VisBuffer2 &vb, const casacore::Int antid, const casacore::Int row, const casacore::MDirection::Types dirframe=casacore::MDirection::AZELGEO, const casacore::Bool usePointing=true)

casacore::MDirection	getPhaseCenter (const vi::VisBuffer2 &vb, const casacore::Double time=-1.0)
	get the phaseCenter for a given time..cached so that it does not need to do small read every time of access time -ve means use the first time in the vb More...

casacore::MDirection	getEphemDir (const vi::VisBuffer2 &vb, const casacore::Double time=-1.0)
	Get the ephemeris direction of a source fieldid of vb at time given. More...

Static Public Member Functions
static void	getFreqRange (casacore::Double &freqMin, casacore::Double &freqMax, vi::VisibilityIterator2 &vi, casacore::MFrequency::Types freqFrame)
	This is a helper function as vi2 does not have a get Freq range for the data selected. More...

static casacore::Bool	getFreqRangeFromRange (casacore::Double &outfreqMin, casacore::Double &outfreqMax, const casacore::MFrequency::Types inFreqFrame, const casacore::Double infreqMin, const casacore::Double infreqMax, vi::VisibilityIterator2 &vi, casacore::MFrequency::Types outFreqFrame)
	Get the freqRange from in Frame to range it represents in outFrame for all the fields and time selected in the vi Returns False if failed to do any conversion. More...

Private Member Functions
void	swapyz (casacore::Cube< casacore::Bool > &out, const casacore::Cube< casacore::Bool > &in)

void	swapyz (casacore::Cube< casacore::Complex > &out, const casacore::Cube< casacore::Complex > &in)

void	rejectConsecutive (const casacore::Vector< casacore::Double > &t, casacore::Vector< casacore::Double > &retval)

void	rejectConsecutive (const casacore::Vector< casacore::Double > &t, casacore::Vector< casacore::Double > &retval, casacore::Vector< casacore::Int > &indx)

void	pointingIndex (casacore::Double &timecol, casacore::Int &antcol, casacore::Double &intervalcol, const casacore::Int nrow, const casacore::Int antenna, const casacore::Int ntimes, casacore::Double &ptime, casacore::Vector< casacore::Int > &indices)
	A quicker pointing index finder void pointingIndex(const casacore::MSPointing& pcols, const casacore::Int antenna, const casacore::Int ntimes, casacore::Double*& ptime, casacore::Vector<casacore::Int>& indices,casacore::Vector<casacore::MDirection>& direction);. More...

casacore::MDirection	getEphemBasedPhaseDir (const vi::VisBuffer2 &vb, const casacore::String &ephemPath, const casacore::MDirection &refDir, const casacore::Double t)
	get ephemeris based direction corrected for parallax for the position in the frame More...

Private Attributes
casacore::MeasFrame	mframe_
	A casacore::MeasFrame for conversions. More...

casacore::Int	oldMSId_p

casacore::Int	oldPCMSId_p

casacore::Vector< std::map < std::pair< double, int > , int > >	timeAntIndex_p

casacore::Vector < casacore::Vector < casacore::MDirection > >	cachedPointingDir_p

casacore::Vector< std::map < casacore::Double, casacore::MDirection > >	cachedPhaseCenter_p

Detailed Description

Etymology

Synopsis

Example

Motivation

Definition at line 68 of file VisBufferUtil.h.

Constructor & Destructor Documentation

casa::VisBufferUtil::VisBufferUtil ( )

Empty Constructor.

casa::VisBufferUtil::VisBufferUtil ( const VisBuffer & vb )

Construct from a VisBuffer (sets a casacore::MeasFrame)

casa::VisBufferUtil::VisBufferUtil ( const vi::VisBuffer2 & vb )

Same as above but with VisBuffer2; It has to be attached to a VisIter2 as the frame is determined that way otherwise use one of the constructors below or the empty constructor above.

casa::VisBufferUtil::VisBufferUtil ( const vi::VisibilityIterator2 & iter )

Construct with the vi2 to get access to the ms to define frame.

casa::VisBufferUtil::VisBufferUtil ( const casacore::MeasFrame & mframe )

Member Function Documentation

void casa::VisBufferUtil::convertFrequency	(	casacore::Vector< casacore::Double > &	outFreq,
		const VisBuffer &	vb,
		const casacore::MFrequency::Types	freqFrame
	)

Converts the frequency in this visbuffer to the frame requested.

void casa::VisBufferUtil::convertFrequency	(	casacore::Vector< casacore::Double > &	outFreq,
		const vi::VisBuffer2 &	vb,
		const casacore::MFrequency::Types	freqFrame
	)

This one is just to test VisBuffer2 internal conversions.

casacore::MDirection casa::VisBufferUtil::getEphemBasedPhaseDir	(	const vi::VisBuffer2 &	vb,
		const casacore::String &	ephemPath,
		const casacore::MDirection &	refDir,
		const casacore::Double	t
	)

private

get ephemeris based direction corrected for parallax for the position in the frame

casacore::MDirection casa::VisBufferUtil::getEphemDir	(	const vi::VisBuffer2 &	vb,
		const casacore::Double	time = `-1.0`
	)

Get the ephemeris direction of a source fieldid of vb at time given.

or the first time in the visBuffer

static void casa::VisBufferUtil::getFreqRange	(	casacore::Double &	freqMin,
		casacore::Double &	freqMax,
		vi::VisibilityIterator2 &	vi,
		casacore::MFrequency::Types	freqFrame
	)

static

This is a helper function as vi2 does not have a get Freq range for the data selected.

static casacore::Bool casa::VisBufferUtil::getFreqRangeFromRange	(	casacore::Double &	outfreqMin,
		casacore::Double &	outfreqMax,
		const casacore::MFrequency::Types	inFreqFrame,
		const casacore::Double	infreqMin,
		const casacore::Double	infreqMax,
		vi::VisibilityIterator2 &	vi,
		casacore::MFrequency::Types	outFreqFrame
	)

static

Get the freqRange from in Frame to range it represents in outFrame for all the fields and time selected in the vi Returns False if failed to do any conversion.

casacore::MDirection casa::VisBufferUtil::getPhaseCenter	(	const vi::VisBuffer2 &	vb,
		const casacore::Double	time = `-1.0`
	)

get the phaseCenter for a given time..cached so that it does not need to do small read every time of access time -ve means use the first time in the vb

casacore::MDirection casa::VisBufferUtil::getPointingDir	(	const VisBuffer &	vb,
		const casacore::Int	antid,
		const casacore::Int	row
	)

get the pointing direction for a given integration and antenna id will cache it for large pointing table specially so that it can be reused pronto

casacore::MDirection casa::VisBufferUtil::getPointingDir	(	const vi::VisBuffer2 &	vb,
		const casacore::Int	antid,
		const casacore::Int	row,
		const casacore::MDirection::Types	dirframe = `casacore::MDirection::AZELGEO`,
		const casacore::Bool	usePointing = `true`
	)

casacore::Bool casa::VisBufferUtil::interpolateFrequency	(	casacore::Cube< casacore::Complex > &	data,
		casacore::Cube< casacore::Bool > &	flags,
		const VisBuffer &	vb,
		const casacore::Vector< casacore::Float > &	outFreqGrid,
		const casacore::MS::PredefinedColumns	whichCol = `casacore::MS::DATA`,
		const casacore::MFrequency::Types	freqFrame = `casacore::MFrequency::LSRK`,
		const casacore::InterpolateArray1D< casacore::Float, casacore::Complex >::InterpolationMethod	interp = `(casacore::InterpolateArray1D< casacore::Float, casacore::Complex >::nearestNeighbour)`
	)

Regrid the data on a new frequency grid (defined by outFreqGrid), on the frequency frame (defined by freqFrame).

It will pass back the interpolated data and flags

void casa::VisBufferUtil::makePSFVisBuffer ( VisBuffer & vb )

Make PSF VisBuffer.

void casa::VisBufferUtil::pointingIndex	(	casacore::Double *&	timecol,
		casacore::Int *&	antcol,
		casacore::Double *&	intervalcol,
		const casacore::Int	nrow,
		const casacore::Int	antenna,
		const casacore::Int	ntimes,
		casacore::Double *&	ptime,
		casacore::Vector< casacore::Int > &	indices
	)

private

A quicker pointing index finder void pointingIndex(const casacore::MSPointing& pcols, const casacore::Int antenna, const casacore::Int ntimes, casacore::Double*& ptime, casacore::Vector<casacore::Int>& indices,casacore::Vector<casacore::MDirection>& direction);.

void casa::VisBufferUtil::rejectConsecutive	(	const casacore::Vector< casacore::Double > &	t,
		casacore::Vector< casacore::Double > &	retval
	)

private

void casa::VisBufferUtil::rejectConsecutive	(	const casacore::Vector< casacore::Double > &	t,
		casacore::Vector< casacore::Double > &	retval,
		casacore::Vector< casacore::Int > &	indx
	)

private

casacore::Bool casa::VisBufferUtil::rotateUVW	(	const vi::VisBuffer2 &	vb,
		const casacore::MDirection &	desiredDir,
		casacore::Matrix< casacore::Double > &	uvw,
		casacore::Vector< casacore::Double > &	dphase
	)

Rotate the uvw in the vb along with giving the phase needed to convert the visibilities to a new phasecenter will return a false if it is a NoOP...don't need then to waste time applying the phasor etc.

void casa::VisBufferUtil::swapyz	(	casacore::Cube< casacore::Bool > &	out,
		const casacore::Cube< casacore::Bool > &	in
	)

private

void casa::VisBufferUtil::swapyz	(	casacore::Cube< casacore::Complex > &	out,
		const casacore::Cube< casacore::Complex > &	in
	)

private

void casa::VisBufferUtil::toVelocity	(	casacore::Vector< casacore::Double > &	outVel,
		const VisBuffer &	vb,
		const casacore::MFrequency::Types	freqFrame,
		const casacore::MVFrequency	restFreq,
		const casacore::MDoppler::Types	veldef
	)

Converts the frequency in this VisBuffer to velocity in the frame/def requested.

void casa::VisBufferUtil::toVelocity	(	casacore::Vector< casacore::Double > &	outVel,
		const vi::VisBuffer2 &	vb,
		const casacore::MFrequency::Types	freqFrame,
		const casacore::MVFrequency	restFreq,
		const casacore::MDoppler::Types	veldef,
		const casacore::Int	row = `0`
	)

Converts the frequencies on given row of VisBuffer2 to velocity in the frame/def requested.

void casa::VisBufferUtil::toVelocity	(	casacore::Vector< casacore::Double > &	outVel,
		const vi::VisBuffer2 &	vb,
		const vi::VisibilityIterator2 &	iter,
		const casacore::MFrequency::Types	freqFrame,
		const casacore::MVFrequency	restFreq,
		const casacore::MDoppler::Types	veldef,
		const casacore::Int	row = `0`
	)

same as above but can be a detached Visbuffer ...the iterator is used explicitly to get some info like direction from field table and frame from spectral window table

get the velocity values for the frequencies passed in* void casa::VisBufferUtil::toVelocity	(	casacore::Vector< casacore::Double > &	outVel,
		const casacore::MFrequency::Types	outfreqFrame,
		const casacore::Vector< casacore::Double > &	inFreq,
		const casacore::MFrequency::Types	inFreqFrame,
		const casacore::MEpoch &	ep,
		const casacore::MDirection &	dir,
		const casacore::MVFrequency	restFreq,
		const casacore::MDoppler::Types	veldef
	)

for the epoch and direction.

If rest frequency is -ve then the middle channel is used as the rest value

Member Data Documentation

casacore::Vector<std::map<casacore::Double, casacore::MDirection> > casa::VisBufferUtil::cachedPhaseCenter_p

private

Definition at line 190 of file VisBufferUtil.h.

casacore::Vector<casacore::Vector<casacore::MDirection> > casa::VisBufferUtil::cachedPointingDir_p

private

Definition at line 189 of file VisBufferUtil.h.

casacore::MeasFrame casa::VisBufferUtil::mframe_

private

A casacore::MeasFrame for conversions.

Definition at line 185 of file VisBufferUtil.h.

casacore::Int casa::VisBufferUtil::oldMSId_p

private

Definition at line 186 of file VisBufferUtil.h.

casacore::Int casa::VisBufferUtil::oldPCMSId_p

private

Definition at line 187 of file VisBufferUtil.h.

casacore::Vector<std::map<std::pair<double,int>, int> > casa::VisBufferUtil::timeAntIndex_p

private

Definition at line 188 of file VisBufferUtil.h.

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

casa/code/msvis/MSVis/VisBufferUtil.h

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Etymology

Synopsis

Example

Motivation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation