ROVisibilityIterator iterates through one or more readonly MeasurementSets. More...

#include <VisibilityIteratorImpl.h>

Inheritance diagram for casa::VisibilityIteratorReadImpl:

Classes
class	Cache
class	Channels
class	Columns
class	MeasurementSetChannels
class	Velocity
Public Types
typedef ROVisibilityIterator::DataColumn	DataColumn
	VLAT should not access private parts, especially variables.
Public Member Functions
	VisibilityIteratorReadImpl ()
	class AsyncEnabler { public: AsyncEnabler (ROVisibilityIterator &); AsyncEnabler (ROVisibilityIterator *); ~AsyncEnabler ();
	VisibilityIteratorReadImpl (ROVisibilityIterator *rovi, const Block< MeasurementSet > &mss, const Block< Int > &sortColumns, const Bool addDefaultSortCols, Double timeInterval)
	Construct from an MS and a Block of MS column enums specifying the iteration order.
	VisibilityIteratorReadImpl (const VisibilityIteratorReadImpl &other, ROVisibilityIterator *rovi)
	Copy construct.
VisibilityIteratorReadImpl &	operator= (const VisibilityIteratorReadImpl &other)
	Assigment.
virtual	~VisibilityIteratorReadImpl ()
	Destructor.
virtual VisibilityIteratorReadImpl *	clone (ROVisibilityIterator *rovi) const
Bool	isAsyncEnabled () const
	Members.
virtual Bool	isWritable () const
virtual void	origin ()
	Reset iterator to origin/start of data (of current chunk)
virtual void	originChunks ()
	Reset iterator to true start of data (first chunk)
virtual Double	getInterval () const
	Return the time interval (in seconds) used for iteration.
virtual void	setInterval (Double timeInterval)
	Set or reset the time interval (in seconds) to use for iteration.
virtual void	setRowBlocking (Int nRows=0)
	Set the 'blocking' size for returning data.
virtual Bool	existsColumn (VisBufferComponents::EnumType id) const
virtual Bool	more () const
	Return False if no more data (in current chunk)
virtual SubChunkPair	getSubchunkId () const
virtual const Block< Int > &	getSortColumns () const
virtual Bool	moreChunks () const
	Return False if no more 'Chunks' of data left.
virtual Bool	newMS () const
	Check if ms has change since last iteration.
virtual Int	msId () const
virtual VisBuffer *	getVisBuffer ()
virtual const MeasurementSet &	ms () const
	reference to actual ms in interator
virtual VisibilityIteratorReadImpl &	nextChunk ()
	Advance to the next Chunk of data.
virtual Vector< Int > &	antenna1 (Vector< Int > &ant1) const
	Return antenna1.
virtual Vector< Int > &	antenna2 (Vector< Int > &ant2) const
	Return antenna2.
virtual Vector< Int > &	feed1 (Vector< Int > &fd1) const
	Return feed1.
virtual Vector< Int > &	feed2 (Vector< Int > &fd2) const
	Return feed2.
virtual Vector< Int > &	channel (Vector< Int > &chan) const
	Return channel numbers in selected VisSet spectrum (i.e.
virtual Vector< SquareMatrix < Complex, 2 > > &	CJones (Vector< SquareMatrix< Complex, 2 > > &cjones) const
	Return feed configuration matrix for specified antenna.
virtual const Cube< Double > &	receptorAngles () const
	Return receptor angles for all antennae and feeds First axis of the cube is a receptor number, 2nd is antennaId, 3rd is feedId Note: the method is intended to provide an access to MSIter::receptorAngles for VisBuffer in the multi-feed case.
virtual const Vector< String > &	antennaMounts () const
	return a string mount identifier for each antenna
virtual const Cube < RigidVector< Double, 2 > > &	getBeamOffsets () const
	Return a cube containing pairs of coordinate offsets for each receptor of each feed (values are in radians, coordinate system is fixed with antenna and is the same one as used to define the BEAM_OFFSET parameter in the feed table).
virtual Bool	allBeamOffsetsZero () const
	True if all elements of the cube returned by getBeamOffsets are zero.
virtual Vector< Float >	feed_pa (Double time) const
	Return feed parallactic angles Vector (nant) (1 feed/ant)
virtual const Float &	parang0 (Double time) const
	Return nominal parallactic angle at specified time (does not include feed position angle offset--see feed_pa) A global value for all antennas (e.g., small array)
virtual Vector< Float >	parang (Double time) const
	Per antenna:
virtual MDirection	azel0 (Double time) const
	Return the antenna AZ/EL Vector (nant)
virtual Vector< MDirection >	azel (Double time) const
virtual Double	hourang (Double time) const
	Return the hour angle for the specified time.
virtual Int	fieldId () const
	Return the current FieldId.
virtual Int	arrayId () const
	Return the current ArrayId.
virtual String	fieldName () const
	Return the current Field Name.
virtual String	sourceName () const
	Return the current Source Name.
virtual Cube< Bool > &	flag (Cube< Bool > &flags) const
	Return flag for each polarization, channel and row.
virtual Matrix< Bool > &	flag (Matrix< Bool > &flags) const
	Return flag for each channel & row.
Bool	existsFlagCategory () const
	Determine whether FLAG_CATEGORY is valid.
virtual Array< Bool > &	flagCategory (Array< Bool > &flagCategories) const
	Return flags for each polarization, channel, category, and row.
virtual Vector< Bool > &	flagRow (Vector< Bool > &rowflags) const
	Return row flag.
virtual Vector< Int > &	scan (Vector< Int > &scans) const
	Return scan number.
virtual Vector< Int > &	observationId (Vector< Int > &obsids) const
	Return the OBSERVATION_IDs.
virtual Vector< Int > &	processorId (Vector< Int > &procids) const
	Return the PROCESSOR_IDs.
virtual Vector< Int > &	stateId (Vector< Int > &stateids) const
	Return the STATE_IDs.
virtual Vector< Double > &	frequency (Vector< Double > &freq) const
	Return current frequencies (in Hz, acc.
virtual Vector< Double > &	lsrFrequency (Vector< Double > &freq) const
	Return frequencies (in Hz, acc.
virtual const MDirection &	phaseCenter () const
	Return the current phase center as an MDirection.
virtual Int	polFrame () const
	Return frame for polarization (returns PolFrame enum)
virtual Vector< Int > &	corrType (Vector< Int > &corrTypes) const
	Return the correlation type (returns Stokes enums)
virtual Vector< Float > &	sigma (Vector< Float > &sig) const
	Return sigma.
virtual Matrix< Float > &	sigmaMat (Matrix< Float > &sigmat) const
	Return sigma matrix (pol-dep)
virtual Int	spectralWindow () const
	Return current SpectralWindow.
virtual Int	polarizationId () const
	Return current Polarization Id.
virtual Int	dataDescriptionId () const
	Return current DataDescription Id.
virtual Vector< Double > &	time (Vector< Double > &t) const
	Return MJD midpoint of interval.
virtual Vector< Double > &	timeCentroid (Vector< Double > &t) const
	Return MJD centroid of interval.
virtual Vector< Double > &	timeInterval (Vector< Double > &ti) const
	Return nominal time interval.
virtual Vector< Double > &	exposure (Vector< Double > &expo) const
	Return actual time interval.
virtual Cube< Complex > &	visibility (Cube< Complex > &vis, DataColumn whichOne) const
	Return the visibilities as found in the MS, Cube (npol,nchan,nrow).
virtual Cube< Float > &	floatData (Cube< Float > &fcube) const
	Return FLOAT_DATA as a Cube (npol, nchan, nrow) if found in the MS.
virtual Matrix< CStokesVector > &	visibility (Matrix< CStokesVector > &vis, DataColumn whichOne) const
	Return the visibility 4-vector of polarizations for each channel.
virtual IPosition	visibilityShape () const
	Return the shape of the visibility Cube.
virtual Vector< RigidVector < Double, 3 > > &	uvw (Vector< RigidVector< Double, 3 > > &uvwvec) const
	Return u,v and w (in meters)
virtual Matrix< Double > &	uvwMat (Matrix< Double > &uvwmat) const
virtual Vector< Float > &	weight (Vector< Float > &wt) const
	Return weight.
virtual Matrix< Float > &	weightMat (Matrix< Float > &wtmat) const
	Returns the nPol_p x curNumRow_p weight matrix.
Bool	existsWeightSpectrum () const
	Determine whether WEIGHT_SPECTRUM exists.
virtual Cube< Float > &	weightSpectrum (Cube< Float > &wtsp) const
	Return weightspectrum (a weight for each channel)
const VisImagingWeight &	getImagingWeightGenerator () const
	Return imaging weight (a weight for each channel) virtual Matrix<Float> & imagingWeight (Matrix<Float> & wt) const;.
virtual Bool	newFieldId () const
	Return True if FieldId/Source has changed since last iteration.
virtual Bool	newArrayId () const
	Return True if arrayID has changed since last iteration.
virtual Bool	newSpectralWindow () const
	Return True if SpectralWindow has changed since last iteration.
virtual Int	channelIndex () const
	Return the index of the first channel of the current channel group in the total (selected) spectrum.
virtual Int	channelGroupSize () const
	Return the width of the current group of channels, i.e., the number of channels returned by visibility () and frequency ().
virtual Int	nCorr () const
	Return the number of correlations in the current iteration.
virtual Int	nRow () const
	Return the number of rows in the current iteration.
virtual Vector< uInt > &	rowIds (Vector< uInt > &rowids) const
	Return the row ids as from the original root table.
virtual Int	nRowChunk () const
	Return the numbers of rows in the current chunk.
virtual Int	nSubInterval () const
	Return the number of sub-intervals in the current chunk.
virtual void	slurp () const
	Call to use the slurp i/o method for all scalar columns.
virtual VisibilityIteratorReadImpl &	selectVelocity (Int nChan, const MVRadialVelocity &vStart, const MVRadialVelocity &vInc, MRadialVelocity::Types rvType=MRadialVelocity::LSR, MDoppler::Types dType=MDoppler::RADIO, Bool precise=False)
	Velocity selection - specify the output channels in velocity: nChan - number of output channels, vStart - start velocity, vInc - velocity increment.
virtual VisibilityIteratorReadImpl &	velInterpolation (const String &)
	Select the velocity interpolation scheme.
virtual VisibilityIteratorReadImpl &	selectChannel (Int nGroup=1, Int start=0, Int width=0, Int increment=1, Int spectralWindow=-1)
	Channel selection - only the selected channels will be returned by the access functions.
virtual VisibilityIteratorReadImpl &	selectChannel (const Block< Vector< Int > > &blockNGroup, const Block< Vector< Int > > &blockStart, const Block< Vector< Int > > &blockWidth, const Block< Vector< Int > > &blockIncr, const Block< Vector< Int > > &blockSpw)
	Same as above except when multiple ms's are to be accessed.
virtual void	getChannelSelection (Block< Vector< Int > > &blockNGroup, Block< Vector< Int > > &blockStart, Block< Vector< Int > > &blockWidth, Block< Vector< Int > > &blockIncr, Block< Vector< Int > > &blockSpw)
	get the channel selection ...the block over the number of ms's associated with this iterator
void	slicesToMatrices (Vector< Matrix< Int > > &matv, const Vector< Vector< Slice > > &slicesv, const Vector< Int > &widthsv) const
	Translate slicesv from the form returned by MSSelection::getChanSlices () to matv as used by setChanAveBounds ().
virtual void	getSpwInFreqRange (Block< Vector< Int > > &spw, Block< Vector< Int > > &start, Block< Vector< Int > > &nchan, Double freqStart, Double freqEnd, Double freqStep, MFrequency::Types freqFrame=MFrequency::LSRK) const
	Get the spw, start and nchan for all the ms's is this Visiter that match the frequecy "freqstart-freqStep" and "freqEnd+freqStep" range Can help in doing channel selection above.
virtual void	getFreqInSpwRange (Double &freqStart, Double &freqEnd, MFrequency::Types freqframe=MFrequency::LSRK) const
	Get the range of frequency convered by the selected data in the frame requested.
virtual void	attachVisBuffer (VisBuffer &vb)
	Attach a VisBuffer object.
virtual void	detachVisBuffer (VisBuffer &vb)
	Detach a VisBuffer object.
virtual const ROMSColumns &	msColumns () const
	Access the current ROMSColumns object in MSIter.
virtual void	allSelectedSpectralWindows (Vector< Int > &spws, Vector< Int > &nvischan)
	get back the selected spectral windows and spectral channels for current ms
virtual void	lsrFrequency (const Int &spw, Vector< Double > &freq, Bool &convert, const Bool ignoreconv=False)
	Convert the frequency from the observe frame to lsr frame.
virtual void	useImagingWeight (const VisImagingWeight &imWgt)
	assign a VisImagingWeight object to this iterator
virtual Int	numberAnt ()
	return number of Ant
virtual Int	numberCoh ()
	Return number of rows in all selected ms's.
virtual Int	numberSpw ()
	Return number of spws, polids, ddids.
virtual Int	numberPol ()
virtual Int	numberDDId ()
ROArrayColumn< Double > &	getChannelFrequency () const
Block< Int >	getChannelGroupNumber () const
Block< Int >	getChannelIncrement () const
Block< Int >	getChannelStart () const
Block< Int >	getChannelWidth () const
Int	getDataDescriptionId () const
const MeasurementSet &	getMeasurementSet () const
Int	getMeasurementSetId () const
Int	getNAntennas () const
virtual MEpoch	getEpoch () const
MFrequency::Types	getObservatoryFrequencyType () const
MPosition	getObservatoryPosition () const
MDirection	getPhaseCenter () const
Vector< Float >	getReceptor0Angle ()
Vector< uInt >	getRowIds () const
Static Public Member Functions
static Vector< Float >	feed_paCalculate (Double time, MSDerivedValues &msd, Int nAntennas, const MEpoch &mEpoch0, const Vector< Float > &receptor0Angle)
static Float	parang0Calculate (Double time, MSDerivedValues &msd, const MEpoch &epoch0)
static Vector< Float >	parangCalculate (Double time, MSDerivedValues &msd, int nAntennas, const MEpoch mEpoch0)
static void	azel0Calculate (Double time, MSDerivedValues &msd, MDirection &azel0, const MEpoch &mEpoch0)
static void	azelCalculate (Double time, MSDerivedValues &msd, Vector< MDirection > &azel, Int nAnt, const MEpoch &mEpoch0)
static Double	hourangCalculate (Double time, MSDerivedValues &msd, const MEpoch &mEpoch0)
static void	lsrFrequency (const Int &spw, Vector< Double > &freq, Bool &convert, const Block< Int > &chanStart, const Block< Int > &chanWidth, const Block< Int > &chanInc, const Block< Int > &numChanGroup, const ROArrayColumn< Double > &chanFreqs, const ROScalarColumn< Int > &obsMFreqTypes, const MEpoch &ep, const MPosition &obsPos, const MDirection &dir, const Bool ignoreconv=False)
Protected Types
typedef std::vector < MeasurementSet >	MeasurementSets
Protected Member Functions
void	attachColumnsSafe (const Table &t)
virtual void	advance ()
	advance the iteration
virtual void	setSelTable ()
	set the currently selected table
virtual void	setState ()
	set the iteration state
virtual void	getTopoFreqs ()
	get the TOPO frequencies from the selected velocities and the obs.
virtual void	getTopoFreqs (Vector< Double > &lsrFreq, Vector< Double > &selFreq)
virtual void	getLsrInfo (Block< Int > &channelGroupNumber, Block< Int > &channelIncrement, Block< Int > &channelStart, Block< Int > &channelWidth, MPosition &observatoryPositon, MDirection &phaseCenter, Bool &velocitySelection) const
vector< MeasurementSet >	getMeasurementSets () const
const MSDerivedValues &	getMSD () const
virtual void	updateSlicer ()
	update the DATA slicer
virtual void	attachColumns (const Table &t)
	attach the column objects to the currently selected table
virtual const Table	attachTable () const
	returns the table, to which columns are attached, can be overridden in derived classes
Bool	usesTiledDataManager (const String &columnName, const MeasurementSet &ms) const
	get the (velocity selected) interpolated visibilities, flags and weights.
virtual void	getDataColumn (ROVisibilityIterator::DataColumn whichOne, const Slicer &slicer, Cube< Complex > &data) const
	get the visibility data (observed, corrected or model); deals with Float and Complex observed data (DATA or FLOAT_DATA)
virtual void	getDataColumn (DataColumn whichOne, Cube< Complex > &data) const
virtual void	getFloatDataColumn (const Slicer &slicer, Cube< Float > &data) const
	get FLOAT_DATA as real Floats.
virtual void	getFloatDataColumn (Cube< Float > &data) const
virtual void	initialize (const Block< MeasurementSet > &mss)
	constructor helpers
virtual void	originChunks (Bool forceRewind)
virtual void	doChannelSelection ()
	Re-Do the channel selection in multi ms case.
virtual void	setTileCache ()
	Set the tile cache size....when using slice access if tile cache size is not set memory usage can go wild.
virtual Bool	isInSelectedSPW (const Int &spw)
	Check if spw is in selected SPW for actual ms.
virtual void	update_rowIds () const
	Updates, if necessary, rowIds_p member for the current chunk.
void	setAsyncEnabled (Bool enable)
template<class T >
void	getColScalar (const ROScalarColumn< T > &column, Vector< T > &array, Bool resize) const
template<class T >
void	getColArray (const ROArrayColumn< T > &column, Array< T > &array, Bool resize) const
virtual void	getCol (const ROScalarColumn< Bool > &column, Vector< Bool > &array, Bool resize=False) const
	column access functions, can be overridden in derived classes
virtual void	getCol (const ROScalarColumn< Int > &column, Vector< Int > &array, Bool resize=False) const
virtual void	getCol (const ROScalarColumn< Double > &column, Vector< Double > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Bool > &column, Array< Bool > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Float > &column, Array< Float > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Double > &column, Array< Double > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Complex > &column, Array< Complex > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Bool > &column, const Slicer &slicer, Array< Bool > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Float > &column, const Slicer &slicer, Array< Float > &array, Bool resize=False) const
virtual void	getCol (const ROArrayColumn< Complex > &column, const Slicer &slicer, Array< Complex > &array, Bool resize=False) const
template<class T >
void	swapyz (Cube< T > &out, const Cube< T > &in) const
	virtual void getCol (const String & colName, Array<Double> & array, Array<Double> & all, Bool resize = False) const; virtual void getCol (const String & colName, Vector<Bool> & array, Vector<Bool> & all, Bool resize = False) const; virtual void getCol (const String & colName, Vector<Int> & array, Vector<Int> & all, Bool resize = False) const; virtual void getCol (const String & colName, Vector<Double> & array, Vector<Double> & all, Bool resize = False) const;
Protected Attributes
Bool	addDefaultSort_p
Bool	asyncEnabled_p
Cache	cache_p
Int	channelGroupSize_p
Channels	channels_p
Int	chunkNumber_p
Columns	columns_p
Int	curChanGroup_p
Int	curEndRow_p
Int	curNGroups_p
uInt	curNumRow_p
Int	curStartRow_p
Int	curTableNumRow_p
Bool	floatDataFound_p
VisImagingWeight	imwgt_p
Bool	initialized_p
Bool	isMultiMS_p
MeasurementSets	measurementSets_p
Bool	more_p
MeasurementSetChannels	msChannels_p
Int	msCounter_p
Bool	msIterAtOrigin_p
MSIter	msIter_p
MSDerivedValues	msd_p
Int	nAnt_p
Int	nChan_p
Int	nPol_p
Int	nRowBlocking_p
Bool	newChanGroup_p
ROVisibilityIterator *	rovi_p
RefRows	selRows_p
Slicer	slicer_p
Block< Int >	sortColumns_p
Bool	stateOk_p
SubChunkPair	subchunk_p
Vector< Bool >	tileCacheIsSet_p
Double	timeInterval_p
Vector< Double >	time_p
Bool	useSlicer_p
Stack< VisBuffer * >	vbStack_p
Velocity	velocity_p
Slicer	weightSlicer_p
Friends
class	AsyncEnabler
class	ViReadImplAsync
class	VisibilityIteratorWriteImpl
class	ROVisibilityIterator
class	ROVisIterator
class	VisIterator
class	VLAT

Detailed Description

ROVisibilityIterator iterates through one or more readonly MeasurementSets.

Intended use:

Public interface

Review Status

Date Reviewed:: yyyy/mm/dd

Prerequisite

Etymology

The ROVisibilityIterator is a readonly iterator returning visibilities

Synopsis

ROVisibilityIterator provides iteration with various sort orders for one or more MSs. It has member functions to retrieve the fields commonly needed in synthesis calibration and imaging.

One should use VisBuffer to access chunks of data.

Example

Motivation

For imaging and calibration you need to access an MS in some consistent order (by field, spectralwindow, time interval etc.). This class provides that access.

Thrown Exceptions

To Do

cleanup the currently dual interface for visibilities and flags
sort out what to do with weights when interpolating

Definition at line 115 of file VisibilityIteratorImpl.h.

Member Typedef Documentation

typedef ROVisibilityIterator::DataColumn casa::VisibilityIteratorReadImpl::DataColumn

VLAT should not access private parts, especially variables.

enum PolFrame { Circular polarization Circular=0, Linear polarization Linear=1 };

enum DataColumn { Observed data Observed=0, Model data Model, Corrected data Corrected };

Definition at line 146 of file VisibilityIteratorImpl.h.

typedef std::vector<MeasurementSet> casa::VisibilityIteratorReadImpl::MeasurementSets [protected]

Definition at line 908 of file VisibilityIteratorImpl.h.

Constructor & Destructor Documentation

casa::VisibilityIteratorReadImpl::VisibilityIteratorReadImpl ( )

class AsyncEnabler { public: AsyncEnabler (ROVisibilityIterator &); AsyncEnabler (ROVisibilityIterator *); ~AsyncEnabler ();

   void release ();

private:

Bool oldEnabledState_p;
ROVisibilityIterator * roVisibilityIterator_p;

};

Default constructor - useful only to assign another iterator later

casa::VisibilityIteratorReadImpl::VisibilityIteratorReadImpl	(	ROVisibilityIterator *	rovi,
		const Block< MeasurementSet > &	mss,
		const Block< Int > &	sortColumns,
		const Bool	addDefaultSortCols,
		Double	timeInterval
	)

Construct from an MS and a Block of MS column enums specifying the iteration order.

If no order is specified, it uses the default sort order of MSIter, which is not necessarily the raw order of ms! The default ordering is ARRAY_ID, FIELD_ID, DATA_DESC_ID, and TIME, but check MSIter.h to be sure. These columns will be added first if they are not specified.

An optional timeInterval (in seconds) can be given to iterate through chunks of time. The default interval of 0 groups all times together. Every 'chunk' of data contains all data within a certain time interval and with identical values of the other iteration columns (e.g. DATA_DESC_ID and FIELD_ID). Using selectChannel (), a number of groups of channels can be requested. At present the channel group iteration will always occur before the interval iteration. VisibilityIteratorReadImpl (const MeasurementSet & ms, const Block<Int> & sortColumns, Double timeInterval = 0);

Same as above, but with the option of using the raw order of ms (addDefaultSortCols=false). VisibilityIteratorReadImpl (const MeasurementSet & ms, const Block<Int> & sortColumns, const Bool addDefaultSortCols, Double timeInterval = 0);

Same as previous constructors, but with multiple MSs to iterate over. VisibilityIteratorReadImpl (const Block<MeasurementSet> & mss, const Block<Int> & sortColumns, Double timeInterval = 0);

casa::VisibilityIteratorReadImpl::VisibilityIteratorReadImpl	(	const VisibilityIteratorReadImpl &	other,
		ROVisibilityIterator *	rovi
	)

Copy construct.

This calls the assigment operator.

virtual casa::VisibilityIteratorReadImpl::~VisibilityIteratorReadImpl ( ) [virtual]

Destructor.

Member Function Documentation

virtual void casa::VisibilityIteratorReadImpl::advance ( ) [protected, virtual]

advance the iteration

virtual void casa::VisibilityIteratorReadImpl::allSelectedSpectralWindows	(	Vector< Int > &	spws,
		Vector< Int > &	nvischan
	)		`[virtual]`

static void casa::VisibilityIteratorReadImpl::azel0Calculate	(	Double	time,
		MSDerivedValues &	msd,
		MDirection &	azel0,
		const MEpoch &	mEpoch0
	)		`[static]`

static Vector<Float> casa::VisibilityIteratorReadImpl::feed_paCalculate	(	Double	time,
		MSDerivedValues &	msd,
		Int	nAntennas,
		const MEpoch &	mEpoch0,
		const Vector< Float > &	receptor0Angle
	)		`[static]`

virtual void casa::VisibilityIteratorReadImpl::getChannelSelection	(	Block< Vector< Int > > &	blockNGroup,
		Block< Vector< Int > > &	blockStart,
		Block< Vector< Int > > &	blockWidth,
		Block< Vector< Int > > &	blockIncr,
		Block< Vector< Int > > &	blockSpw
	)		`[virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROScalarColumn< Bool > &	column,
		Vector< Bool > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROScalarColumn< Int > &	column,
		Vector< Int > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROScalarColumn< Double > &	column,
		Vector< Double > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROArrayColumn< Bool > &	column,
		Array< Bool > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROArrayColumn< Float > &	column,
		Array< Float > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROArrayColumn< Double > &	column,
		Array< Double > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getCol	(	const ROArrayColumn< Complex > &	column,
		Array< Complex > &	array,
		Bool	resize = `False`
	)		const `[protected, virtual]`

void casa::VisibilityIteratorReadImpl::getColArray	(	const ROArrayColumn< T > &	column,
		Array< T > &	array,
		Bool	resize
	)		const `[protected]`

void casa::VisibilityIteratorReadImpl::getColScalar	(	const ROScalarColumn< T > &	column,
		Vector< T > &	array,
		Bool	resize
	)		const `[protected]`

virtual void casa::VisibilityIteratorReadImpl::getDataColumn	(	ROVisibilityIterator::DataColumn	whichOne,
		const Slicer &	slicer,
		Cube< Complex > &	data
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getFreqInSpwRange	(	Double &	freqStart,
		Double &	freqEnd,
		MFrequency::Types	freqframe = `MFrequency::LSRK`
	)		const `[virtual]`

virtual void casa::VisibilityIteratorReadImpl::getLsrInfo	(	Block< Int > &	channelGroupNumber,
		Block< Int > &	channelIncrement,
		Block< Int > &	channelStart,
		Block< Int > &	channelWidth,
		MPosition &	observatoryPositon,
		MDirection &	phaseCenter,
		Bool &	velocitySelection
	)		const `[protected, virtual]`

virtual void casa::VisibilityIteratorReadImpl::getSpwInFreqRange	(	Block< Vector< Int > > &	spw,
		Block< Vector< Int > > &	start,
		Block< Vector< Int > > &	nchan,
		Double	freqStart,
		Double	freqEnd,
		Double	freqStep,
		MFrequency::Types	freqFrame = `MFrequency::LSRK`
	)		const `[virtual]`

virtual void casa::VisibilityIteratorReadImpl::getTopoFreqs	(	Vector< Double > &	lsrFreq,
		Vector< Double > &	selFreq
	)		`[protected, virtual]`

static Double casa::VisibilityIteratorReadImpl::hourangCalculate	(	Double	time,
		MSDerivedValues &	msd,
		const MEpoch &	mEpoch0
	)		`[static]`

virtual void casa::VisibilityIteratorReadImpl::lsrFrequency	(	const Int &	spw,
		Vector< Double > &	freq,
		Bool &	convert,
		const Bool	ignoreconv = `False`
	)		`[virtual]`

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