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. More...

Public Member Functions
	VisibilityIteratorReadImpl ()
	class AsyncEnabler { public: AsyncEnabler (ROVisibilityIterator &); AsyncEnabler (ROVisibilityIterator *); ~AsyncEnabler (); More...

	VisibilityIteratorReadImpl (ROVisibilityIterator *rovi, const casacore::Block< casacore::MeasurementSet > &mss, const casacore::Block< casacore::Int > &sortColumns, const casacore::Bool addDefaultSortCols, casacore::Double timeInterval)
	Construct from an casacore::MS and a casacore::Block of casacore::MS column enums specifying the iteration order. More...

	VisibilityIteratorReadImpl (const VisibilityIteratorReadImpl &other, ROVisibilityIterator *rovi)
	Copy construct. More...

VisibilityIteratorReadImpl &	operator= (const VisibilityIteratorReadImpl &other)
	Assigment. More...

virtual	~VisibilityIteratorReadImpl ()
	Destructor. More...

virtual VisibilityIteratorReadImpl *	clone (ROVisibilityIterator *rovi) const

casacore::Bool	isAsyncEnabled () const
	Members. More...

virtual casacore::Bool	isWritable () const

virtual void	origin ()
	Reset iterator to origin/start of data (of current chunk) More...

virtual void	originChunks ()
	Reset iterator to true start of data (first chunk) More...

virtual casacore::Double	getInterval () const
	Return the time interval (in seconds) used for iteration. More...

virtual void	setInterval (casacore::Double timeInterval)
	Set or reset the time interval (in seconds) to use for iteration. More...

virtual void	setRowBlocking (casacore::Int nRows=0)
	Set the 'blocking' size for returning data. More...

virtual casacore::Bool	existsColumn (VisBufferComponents::EnumType id) const

virtual casacore::Bool	more () const
	Return false if no more data (in current chunk) More...

virtual SubChunkPair	getSubchunkId () const

virtual const casacore::Block < casacore::Int > &	getSortColumns () const

virtual casacore::Bool	moreChunks () const
	Return false if no more 'Chunks' of data left. More...

virtual casacore::Bool	newMS () const
	Check if ms has change since last iteration. More...

virtual casacore::Int	msId () const

virtual VisBuffer *	getVisBuffer ()

virtual const casacore::MeasurementSet &	ms () const
	reference to actual ms in interator More...

virtual VisibilityIteratorReadImpl &	nextChunk ()
	Advance to the next Chunk of data. More...

virtual casacore::Vector < casacore::Int > &	antenna1 (casacore::Vector< casacore::Int > &ant1) const
	Return antenna1. More...

virtual casacore::Vector < casacore::Int > &	antenna2 (casacore::Vector< casacore::Int > &ant2) const
	Return antenna2. More...

virtual casacore::Vector < casacore::Int > &	feed1 (casacore::Vector< casacore::Int > &fd1) const
	Return feed1. More...

virtual casacore::Vector < casacore::Int > &	feed2 (casacore::Vector< casacore::Int > &fd2) const
	Return feed2. More...

virtual casacore::Vector < casacore::Int > &	channel (casacore::Vector< casacore::Int > &chan) const
	Return channel numbers in selected VisSet spectrum (i.e. More...

virtual casacore::Vector < casacore::SquareMatrix < casacore::Complex, 2 > > &	CJones (casacore::Vector< casacore::SquareMatrix< casacore::Complex, 2 > > &cjones) const
	Return feed configuration matrix for specified antenna. More...

virtual const casacore::Cube < casacore::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. More...

virtual const casacore::Vector < casacore::String > &	antennaMounts () const
	return a string mount identifier for each antenna More...

virtual const casacore::Cube < casacore::RigidVector < casacore::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). More...

virtual casacore::Bool	allBeamOffsetsZero () const
	true if all elements of the cube returned by getBeamOffsets are zero More...

virtual casacore::Vector < casacore::Float >	feed_pa (casacore::Double time) const
	Return feed parallactic angles casacore::Vector (nant) (1 feed/ant) More...

virtual const casacore::Float &	parang0 (casacore::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) More...

virtual casacore::Vector < casacore::Float >	parang (casacore::Double time) const
	Per antenna: More...

virtual casacore::MDirection	azel0 (casacore::Double time) const
	Return the antenna AZ/EL casacore::Vector (nant) More...

virtual casacore::Vector < casacore::MDirection >	azel (casacore::Double time) const

virtual casacore::Double	hourang (casacore::Double time) const
	Return the hour angle for the specified time. More...

virtual casacore::Int	fieldId () const
	Return the current FieldId. More...

virtual casacore::Int	arrayId () const
	Return the current ArrayId. More...

virtual casacore::String	fieldName () const
	Return the current Field Name. More...

virtual casacore::String	sourceName () const
	Return the current Source Name. More...

virtual casacore::Cube < casacore::Bool > &	flag (casacore::Cube< casacore::Bool > &flags) const
	Return flag for each polarization, channel and row. More...

virtual casacore::Matrix < casacore::Bool > &	flag (casacore::Matrix< casacore::Bool > &flags) const
	Return flag for each channel & row. More...

casacore::Bool	existsFlagCategory () const
	Determine whether FLAG_CATEGORY is valid. More...

virtual casacore::Array < casacore::Bool > &	flagCategory (casacore::Array< casacore::Bool > &flagCategories) const
	Return flags for each polarization, channel, category, and row. More...

virtual casacore::Vector < casacore::Bool > &	flagRow (casacore::Vector< casacore::Bool > &rowflags) const
	Return row flag. More...

virtual casacore::Vector < casacore::Int > &	scan (casacore::Vector< casacore::Int > &scans) const
	Return scan number. More...

virtual casacore::Vector < casacore::Int > &	observationId (casacore::Vector< casacore::Int > &obsids) const
	Return the OBSERVATION_IDs. More...

virtual casacore::Vector < casacore::Int > &	processorId (casacore::Vector< casacore::Int > &procids) const
	Return the PROCESSOR_IDs. More...

virtual casacore::Vector < casacore::Int > &	stateId (casacore::Vector< casacore::Int > &stateids) const
	Return the STATE_IDs. More...

virtual casacore::Vector < casacore::Double > &	frequency (casacore::Vector< casacore::Double > &freq) const
	Return current frequencies (in Hz, acc. More...

virtual casacore::Vector < casacore::Double > &	lsrFrequency (casacore::Vector< casacore::Double > &freq) const
	Return frequencies (in Hz, acc. More...

virtual const casacore::MDirection &	phaseCenter () const
	Return the current phase center as an MDirection. More...

virtual const casacore::MDirection	phaseCenter (const casacore::Int fieldId, const casacore::Double time=-1.0) const

virtual casacore::Int	polFrame () const
	Return frame for polarization (returns PolFrame enum) More...

virtual casacore::Vector < casacore::Int > &	corrType (casacore::Vector< casacore::Int > &corrTypes) const
	Return the correlation type (returns casacore::Stokes enums) More...

virtual casacore::Vector < casacore::Float > &	sigma (casacore::Vector< casacore::Float > &sig) const
	Return sigma. More...

virtual casacore::Matrix < casacore::Float > &	sigmaMat (casacore::Matrix< casacore::Float > &sigmat) const
	Return sigma matrix (pol-dep) More...

virtual casacore::Int	spectralWindow () const
	Return current SpectralWindow. More...

virtual casacore::Int	polarizationId () const
	Return current Polarization Id. More...

virtual casacore::Int	dataDescriptionId () const
	Return current DataDescription Id. More...

virtual casacore::Vector < casacore::Double > &	time (casacore::Vector< casacore::Double > &t) const
	Return MJD midpoint of interval. More...

virtual casacore::Vector < casacore::Double > &	timeCentroid (casacore::Vector< casacore::Double > &t) const
	Return MJD centroid of interval. More...

virtual casacore::Vector < casacore::Double > &	timeInterval (casacore::Vector< casacore::Double > &ti) const
	Return nominal time interval. More...

virtual casacore::Vector < casacore::Double > &	exposure (casacore::Vector< casacore::Double > &expo) const
	Return actual time interval. More...

virtual casacore::Cube < casacore::Complex > &	visibility (casacore::Cube< casacore::Complex > &vis, DataColumn whichOne) const
	Return the visibilities as found in the casacore::MS, casacore::Cube (npol,nchan,nrow). More...

virtual casacore::Cube < casacore::Float > &	floatData (casacore::Cube< casacore::Float > &fcube) const
	Return FLOAT_DATA as a casacore::Cube (npol, nchan, nrow) if found in the MS. More...

virtual casacore::Matrix < CStokesVector > &	visibility (casacore::Matrix< CStokesVector > &vis, DataColumn whichOne) const
	Return the visibility 4-vector of polarizations for each channel. More...

virtual casacore::IPosition	visibilityShape () const
	Return the shape of the visibility Cube. More...

virtual casacore::Vector < casacore::RigidVector < casacore::Double, 3 > > &	uvw (casacore::Vector< casacore::RigidVector< casacore::Double, 3 > > &uvwvec) const
	Return u,v and w (in meters) More...

virtual casacore::Matrix < casacore::Double > &	uvwMat (casacore::Matrix< casacore::Double > &uvwmat) const

virtual casacore::Vector < casacore::Float > &	weight (casacore::Vector< casacore::Float > &wt) const
	Return weight. More...

virtual casacore::Matrix < casacore::Float > &	weightMat (casacore::Matrix< casacore::Float > &wtmat) const
	Returns the nPol_p x curNumRow_p weight matrix. More...

casacore::Bool	existsWeightSpectrum () const
	Determine whether WEIGHT_SPECTRUM exists. More...

virtual casacore::Cube < casacore::Float > &	weightSpectrum (casacore::Cube< casacore::Float > &wtsp) const
	Return weightspectrum (a weight for each channel) More...

const VisImagingWeight &	getImagingWeightGenerator () const
	Return imaging weight (a weight for each channel) virtual casacore::Matrix<casacore::Float> & imagingWeight (casacore::Matrix<casacore::Float> & wt) const; More...

virtual casacore::Bool	newFieldId () const
	Return true if FieldId/Source has changed since last iteration. More...

virtual casacore::Bool	newArrayId () const
	Return true if arrayID has changed since last iteration. More...

virtual casacore::Bool	newSpectralWindow () const
	Return true if SpectralWindow has changed since last iteration. More...

virtual casacore::Int	channelIndex () const
	Return the index of the first channel of the current channel group in the total (selected) spectrum. More...

virtual casacore::Int	channelGroupSize () const
	Return the width of the current group of channels, i.e., the number of channels returned by visibility () and frequency (). More...

virtual casacore::Int	nCorr () const
	Return the number of correlations in the current iteration. More...

virtual casacore::Int	nRow () const
	Return the number of rows in the current iteration. More...

virtual casacore::Vector < casacore::uInt > &	rowIds (casacore::Vector< casacore::uInt > &rowids) const
	Return the row ids as from the original root table. More...

virtual casacore::Int	nRowChunk () const
	Return the numbers of rows in the current chunk. More...

virtual casacore::Int	nSubInterval () const
	Return the number of sub-intervals in the current chunk. More...

virtual void	slurp () const
	Call to use the slurp i/o method for all scalar columns. More...

virtual VisibilityIteratorReadImpl &	selectVelocity (casacore::Int nChan, const casacore::MVRadialVelocity &vStart, const casacore::MVRadialVelocity &vInc, casacore::MRadialVelocity::Types rvType=casacore::MRadialVelocity::LSR, casacore::MDoppler::Types dType=casacore::MDoppler::RADIO, casacore::Bool precise=false)
	Velocity selection - specify the output channels in velocity: nChan - number of output channels, vStart - start velocity, vInc - velocity increment. More...

virtual VisibilityIteratorReadImpl &	velInterpolation (const casacore::String &)
	Select the velocity interpolation scheme. More...

virtual VisibilityIteratorReadImpl &	selectChannel (casacore::Int nGroup=1, casacore::Int start=0, casacore::Int width=0, casacore::Int increment=1, casacore::Int spectralWindow=-1)
	Channel selection - only the selected channels will be returned by the access functions. More...

virtual VisibilityIteratorReadImpl &	selectChannel (const casacore::Block< casacore::Vector< casacore::Int > > &blockNGroup, const casacore::Block< casacore::Vector< casacore::Int > > &blockStart, const casacore::Block< casacore::Vector< casacore::Int > > &blockWidth, const casacore::Block< casacore::Vector< casacore::Int > > &blockIncr, const casacore::Block< casacore::Vector< casacore::Int > > &blockSpw)
	Same as above except when multiple ms's are to be accessed. More...

virtual void	getChannelSelection (casacore::Block< casacore::Vector< casacore::Int > > &blockNGroup, casacore::Block< casacore::Vector< casacore::Int > > &blockStart, casacore::Block< casacore::Vector< casacore::Int > > &blockWidth, casacore::Block< casacore::Vector< casacore::Int > > &blockIncr, casacore::Block< casacore::Vector< casacore::Int > > &blockSpw)
	get the channel selection...the block over the number of ms's associated with this iterator More...

void	slicesToMatrices (casacore::Vector< casacore::Matrix< casacore::Int > > &matv, const casacore::Vector< casacore::Vector< casacore::Slice > > &slicesv, const casacore::Vector< casacore::Int > &widthsv) const
	Translate slicesv from the form returned by casacore::MSSelection::getChanSlices () to matv as used by setChanAveBounds (). More...

virtual void	getSpwInFreqRange (casacore::Block< casacore::Vector< casacore::Int > > &spw, casacore::Block< casacore::Vector< casacore::Int > > &start, casacore::Block< casacore::Vector< casacore::Int > > &nchan, casacore::Double freqStart, casacore::Double freqEnd, casacore::Double freqStep, casacore::MFrequency::Types freqFrame=casacore::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. More...

virtual void	getFreqInSpwRange (casacore::Double &freqStart, casacore::Double &freqEnd, casacore::MFrequency::Types freqframe=casacore::MFrequency::LSRK) const
	Get the range of frequency convered by the selected data in the frame requested. More...

virtual void	attachVisBuffer (VisBuffer &vb)
	Attach a VisBuffer object. More...

virtual void	detachVisBuffer (VisBuffer &vb)
	Detach a VisBuffer object. More...

virtual const casacore::ROMSColumns &	msColumns () const
	Access the current casacore::ROMSColumns object in MSIter. More...

virtual void	allSelectedSpectralWindows (casacore::Vector< casacore::Int > &spws, casacore::Vector< casacore::Int > &nvischan)
	get back the selected spectral windows and spectral channels for current ms More...

virtual void	lsrFrequency (const casacore::Int &spw, casacore::Vector< casacore::Double > &freq, casacore::Bool &convert, const casacore::Bool ignoreconv=false)
	Convert the frequency from the observe frame to lsr frame. More...

virtual void	useImagingWeight (const VisImagingWeight &imWgt)
	assign a VisImagingWeight object to this iterator More...

virtual casacore::Int	numberAnt ()
	return number of Ant More...

virtual casacore::Int	numberCoh ()
	Return number of rows in all selected ms's. More...

virtual casacore::Int	numberSpw ()
	Return number of spws, polids, ddids. More...

virtual casacore::Int	numberPol ()

virtual casacore::Int	numberDDId ()

casacore::ArrayColumn < casacore::Double > &	getChannelFrequency () const

casacore::Block< casacore::Int >	getChannelGroupNumber () const

casacore::Block< casacore::Int >	getChannelIncrement () const

casacore::Block< casacore::Int >	getChannelStart () const

casacore::Block< casacore::Int >	getChannelWidth () const

casacore::Int	getDataDescriptionId () const

const casacore::MeasurementSet &	getMeasurementSet () const

casacore::Int	getMeasurementSetId () const

casacore::Int	getNAntennas () const

virtual casacore::MEpoch	getEpoch () const

casacore::MFrequency::Types	getObservatoryFrequencyType () const

casacore::MPosition	getObservatoryPosition () const

casacore::MDirection	getPhaseCenter () const

casacore::Vector< casacore::Float >	getReceptor0Angle ()

casacore::Vector< casacore::uInt >	getRowIds () const

Static Public Member Functions
static casacore::Vector < casacore::Float >	feed_paCalculate (casacore::Double time, casacore::MSDerivedValues &msd, casacore::Int nAntennas, const casacore::MEpoch &mEpoch0, const casacore::Vector< casacore::Float > &receptor0Angle)

static casacore::Float	parang0Calculate (casacore::Double time, casacore::MSDerivedValues &msd, const casacore::MEpoch &epoch0)

static casacore::Vector < casacore::Float >	parangCalculate (casacore::Double time, casacore::MSDerivedValues &msd, int nAntennas, const casacore::MEpoch mEpoch0)

static void	azel0Calculate (casacore::Double time, casacore::MSDerivedValues &msd, casacore::MDirection &azel0, const casacore::MEpoch &mEpoch0)

static void	azelCalculate (casacore::Double time, casacore::MSDerivedValues &msd, casacore::Vector< casacore::MDirection > &azel, casacore::Int nAnt, const casacore::MEpoch &mEpoch0)

static casacore::Double	hourangCalculate (casacore::Double time, casacore::MSDerivedValues &msd, const casacore::MEpoch &mEpoch0)

static void	lsrFrequency (const casacore::Int &spw, casacore::Vector< casacore::Double > &freq, casacore::Bool &convert, const casacore::Block< casacore::Int > &chanStart, const casacore::Block< casacore::Int > &chanWidth, const casacore::Block< casacore::Int > &chanInc, const casacore::Block< casacore::Int > &numChanGroup, const casacore::ArrayColumn< casacore::Double > &chanFreqs, const casacore::ScalarColumn< casacore::Int > &obsMFreqTypes, const casacore::MEpoch &ep, const casacore::MPosition &obsPos, const casacore::MDirection &dir, const casacore::Bool ignoreconv=false)

Protected Types
typedef std::vector < casacore::MeasurementSet >	MeasurementSets

Protected Member Functions
void	attachColumnsSafe (const casacore::Table &t)

virtual void	advance ()
	advance the iteration More...

virtual void	setSelTable ()
	set the currently selected table More...

virtual void	setState ()
	set the iteration state More...

virtual void	getTopoFreqs ()
	get the TOPO frequencies from the selected velocities and the obs. More...

virtual void	getTopoFreqs (casacore::Vector< casacore::Double > &lsrFreq, casacore::Vector< casacore::Double > &selFreq)

virtual void	getLsrInfo (casacore::Block< casacore::Int > &channelGroupNumber, casacore::Block< casacore::Int > &channelIncrement, casacore::Block< casacore::Int > &channelStart, casacore::Block< casacore::Int > &channelWidth, casacore::MPosition &observatoryPositon, casacore::MDirection &phaseCenter, casacore::Bool &velocitySelection) const

std::vector < casacore::MeasurementSet >	getMeasurementSets () const

const casacore::MSDerivedValues &	getMSD () const

virtual void	updateSlicer ()
	update the DATA slicer More...

virtual void	attachColumns (const casacore::Table &t)
	attach the column objects to the currently selected table More...

virtual const casacore::Table	attachTable () const
	returns the table, to which columns are attached, can be overridden in derived classes More...

casacore::Bool	usesTiledDataManager (const casacore::String &columnName, const casacore::MeasurementSet &ms) const
	get the (velocity selected) interpolated visibilities, flags and weights. More...

virtual void	getDataColumn (ROVisibilityIterator::DataColumn whichOne, const casacore::Slicer &slicer, casacore::Cube< casacore::Complex > &data) const
	get the visibility data (observed, corrected or model); deals with casacore::Float and casacore::Complex observed data (DATA or FLOAT_DATA) More...

virtual void	getDataColumn (DataColumn whichOne, casacore::Cube< casacore::Complex > &data) const

virtual void	getFloatDataColumn (const casacore::Slicer &slicer, casacore::Cube< casacore::Float > &data) const
	get FLOAT_DATA as real Floats. More...

virtual void	getFloatDataColumn (casacore::Cube< casacore::Float > &data) const

virtual void	initialize (const casacore::Block< casacore::MeasurementSet > &mss)
	constructor helpers More...

virtual void	originChunks (casacore::Bool forceRewind)

virtual void	doChannelSelection ()
	Re-Do the channel selection in multi ms case. More...

virtual void	setTileCache ()
	Set the tile cache size....when using slice access if tile cache size is not set memory usage can go wild. More...

virtual casacore::Bool	isInSelectedSPW (const casacore::Int &spw)
	Check if spw is in selected SPW for actual ms. More...

virtual void	update_rowIds () const
	Updates, if necessary, rowIds_p member for the current chunk. More...

void	setAsyncEnabled (casacore::Bool enable)

template<class T >
void	getColScalar (const casacore::ScalarColumn< T > &column, casacore::Vector< T > &array, casacore::Bool resize) const

template<class T >
void	getColArray (const casacore::ArrayColumn< T > &column, casacore::Array< T > &array, casacore::Bool resize) const

virtual void	getCol (const casacore::ScalarColumn< casacore::Bool > &column, casacore::Vector< casacore::Bool > &array, casacore::Bool resize=false) const
	column access functions, can be overridden in derived classes More...

virtual void	getCol (const casacore::ScalarColumn< casacore::Int > &column, casacore::Vector< casacore::Int > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ScalarColumn< casacore::Double > &column, casacore::Vector< casacore::Double > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Bool > &column, casacore::Array< casacore::Bool > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Float > &column, casacore::Array< casacore::Float > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Double > &column, casacore::Array< casacore::Double > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Complex > &column, casacore::Array< casacore::Complex > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Bool > &column, const casacore::Slicer &slicer, casacore::Array< casacore::Bool > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Float > &column, const casacore::Slicer &slicer, casacore::Array< casacore::Float > &array, casacore::Bool resize=false) const

virtual void	getCol (const casacore::ArrayColumn< casacore::Complex > &column, const casacore::Slicer &slicer, casacore::Array< casacore::Complex > &array, casacore::Bool resize=false) const

template<class T >
void	swapyz (casacore::Cube< T > &out, const casacore::Cube< T > &in) const
	virtual void getCol (const casacore::String & colName, casacore::Array<casacore::Double> & array, casacore::Array<casacore::Double> & all, casacore::Bool resize = false) const; virtual void getCol (const casacore::String & colName, casacore::Vector<casacore::Bool> & array, casacore::Vector<casacore::Bool> & all, casacore::Bool resize = false) const; virtual void getCol (const casacore::String & colName, casacore::Vector<casacore::Int> & array, casacore::Vector<casacore::Int> & all, casacore::Bool resize = false) const; virtual void getCol (const casacore::String & colName, casacore::Vector<casacore::Double> & array, casacore::Vector<casacore::Double> & all, casacore::Bool resize = false) const; More...

Protected Attributes
casacore::Bool	addDefaultSort_p

casacore::Bool	asyncEnabled_p

casacore::Bool	autoTileCacheSizing_p

Cache	cache_p

casacore::Int	channelGroupSize_p

Channels	channels_p

casacore::Int	chunkNumber_p

Columns	columns_p

casacore::Int	curChanGroup_p

casacore::Int	curEndRow_p

casacore::Int	curNGroups_p

casacore::uInt	curNumRow_p

casacore::Int	curStartRow_p

casacore::Int	curTableNumRow_p

casacore::Bool	floatDataFound_p

VisImagingWeight	imwgt_p

casacore::Bool	initialized_p

casacore::Bool	isMultiMS_p

MeasurementSets	measurementSets_p

casacore::Bool	more_p

MeasurementSetChannels	msChannels_p

casacore::Int	msCounter_p

casacore::Bool	msIterAtOrigin_p

casacore::MSIter	msIter_p

casacore::MSDerivedValues	msd_p

casacore::Int	nAnt_p

casacore::Int	nChan_p

casacore::Int	nPol_p

casacore::Int	nRowBlocking_p

casacore::Bool	newChanGroup_p

ROVisibilityIterator *	rovi_p

casacore::RefRows	selRows_p

casacore::Slicer	slicer_p

casacore::Block< casacore::Int >	sortColumns_p

casacore::Bool	stateOk_p

SubChunkPair	subchunk_p

casacore::Vector< casacore::Bool >	tileCacheIsSet_p

casacore::Double	timeInterval_p

casacore::Vector < casacore::Double >	time_p

casacore::Bool	useSlicer_p

std::stack< VisBuffer * >	vbStack_p

Velocity	velocity_p

casacore::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

MSIter
casacore::MeasurementSet
VisSet

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 casacore::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<casacore::MeasurementSet> casa::VisibilityIteratorReadImpl::MeasurementSets

protected

Definition at line 913 of file VisibilityIteratorImpl.h.

Constructor & Destructor Documentation

casa::VisibilityIteratorReadImpl::VisibilityIteratorReadImpl ( )

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

void release ();

private:

casacore::Bool oldEnabledState_p; ROVisibilityIterator * roVisibilityIterator_p; };

Default constructor - useful only to assign another iterator later

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

Construct from an casacore::MS and a casacore::Block of casacore::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 casacore::MeasurementSet & ms, const casacore::Block<casacore::Int> & sortColumns, casacore::Double timeInterval = 0);

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

Same as previous constructors, but with multiple MSs to iterate over. VisibilityIteratorReadImpl (const casacore::Block<casacore::MeasurementSet> & mss, const casacore::Block<casacore::Int> & sortColumns, casacore::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 ( )

protectedvirtual

advance the iteration

void casa::VisibilityIteratorReadImpl::slicesToMatrices	(	casacore::Vector< casacore::Matrix< casacore::Int > > &	matv,
		const casacore::Vector< casacore::Vector< casacore::Slice > > &	slicesv,
		const casacore::Vector< casacore::Int > &	widthsv
	)		const

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