casa::SDGrid Class Reference

An FTMachine for Gridding Single Dish data. More...

#include <SDGrid.h>

Inheritance diagram for casa::SDGrid:

Public Member Functions
	SDGrid (SkyJones &sj, casacore::Int cachesize, casacore::Int tilesize, casacore::String convType="BOX", casacore::Int userSupport=-1, casacore::Bool useImagingWeight=false)
	Constructor: cachesize is the size of the cache in words (e.g. More...
	SDGrid (casacore::MPosition &ml, SkyJones &sj, casacore::Int cachesize, casacore::Int tilesize, casacore::String convType="BOX", casacore::Int userSupport=-1, casacore::Float minweight=0., casacore::Bool clipminmax=false, casacore::Bool useImagingWeight=false)
	SDGrid (casacore::Int cachesize, casacore::Int tilesize, casacore::String convType="BOX", casacore::Int userSupport=-1, casacore::Bool useImagingWeight=false)
	SDGrid (casacore::MPosition &ml, casacore::Int cachesize, casacore::Int tilesize, casacore::String convType="BOX", casacore::Int userSupport=-1, casacore::Float minweight=0., casacore::Bool clipminmax=false, casacore::Bool useImagingWeight=false)
	SDGrid (casacore::MPosition &ml, casacore::Int cachesize, casacore::Int tilesize, casacore::String convType="TGAUSS", casacore::Float truncate=-1.0, casacore::Float gwidth=0.0, casacore::Float jwidth=0.0, casacore::Float minweight=0., casacore::Bool clipminmax=false, casacore::Bool useImagingWeight=false)
	SDGrid (const SDGrid &other)
	Copy constructor. More...
SDGrid &	operator= (const SDGrid &other)
	Assignment operator. More...
	~SDGrid ()
void	initializeToVis (casacore::ImageInterface< casacore::Complex > &image, const VisBuffer &vb)
	Initialize transform to Visibility plane using the image as a template. More...
void	finalizeToVis ()
	Finalize transform to Visibility plane: flushes the image cache and shows statistics if it is being used. More...
void	initializeToSky (casacore::ImageInterface< casacore::Complex > &image, casacore::Matrix< casacore::Float > &weight, const VisBuffer &vb)
	Initialize transform to Sky plane: initializes the image. More...
void	finalizeToSky ()
	Finalize transform to Sky plane: flushes the image cache and shows statistics if it is being used. More...
void	get (VisBuffer &vb, casacore::Int row=-1)
	Get actual coherence from grid by degridding. More...
void	put (const VisBuffer &vb, casacore::Int row=-1, casacore::Bool dopsf=false, FTMachine::Type type=FTMachine::OBSERVED)
	Put coherence to grid by gridding. More...
virtual void	makeImage (FTMachine::Type type, ROVisibilityIterator &vi, casacore::ImageInterface< casacore::Complex > &image, casacore::Matrix< casacore::Float > &weight)
	Make the entire image using a ROVisIter... More...
casacore::ImageInterface < casacore::Complex > &	getImage (casacore::Matrix< casacore::Float > &, casacore::Bool normalize=true)
	Get the final image: optionally normalize by the summed weights. More...
virtual void	normalizeImage (casacore::Lattice< casacore::Complex > &, const casacore::Matrix< casacore::Double > &, casacore::Lattice< casacore::Float > &, casacore::Bool)
void	getWeightImage (casacore::ImageInterface< casacore::Float > &, casacore::Matrix< casacore::Float > &)
	Get the final weights image. More...
virtual casacore::Bool	changed (const VisBuffer &vb)
	Has this operator changed since the last application? More...
virtual void	setMiscInfo (const casacore::Int qualifier)
	set the order of the Taylor term for MFS this is to tell A-casacore::Projection to qualify the accumulated avgPB for each Taylor term in the CFCache. More...
virtual void	ComputeResiduals (VisBuffer &, casacore::Bool)
	Make the VB and VBStore interefaces for the interim re-factoring work. More...
virtual casacore::String	name () const
	Return the name of the machine. More...
Public Member Functions inherited from casa::FTMachine
	FTMachine ()
	FTMachine (casacore::CountedPtr< CFCache > &cfcache, casacore::CountedPtr< ConvolutionFunction > &cfctor)
	FTMachine (const FTMachine &other)
FTMachine &	operator= (const FTMachine &other)
void	setBasePrivates (const FTMachine &other)
virtual	~FTMachine ()
virtual FTMachine *	cloneFTM ()
	clone copy the default cloner clones via a Record copy More...
virtual void	initializeToVis (casacore::Block< casacore::CountedPtr< casacore::ImageInterface< casacore::Complex > > > &compImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &modelImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &weightImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &fluxScaleVec, casacore::Block< casacore::Matrix< casacore::Float > > &weightsVec, const VisBuffer &vb)
	Vectorized InitializeToVis. More...
virtual void	initializeToVisNew (const VisBuffer &vb, casacore::CountedPtr< SIImageStore > imstore)
virtual void	initializeToSky (casacore::Block< casacore::CountedPtr< casacore::ImageInterface< casacore::Complex > > > &compImageVec, casacore::Block< casacore::Matrix< casacore::Float > > &weightsVec, const VisBuffer &vb, const casacore::Bool dopsf=false)
	Vectorized InitializeToSky. More...
virtual void	initializeToSkyNew (const casacore::Bool dopsf, const VisBuffer &vb, casacore::CountedPtr< SIImageStore > imstore)
virtual void	finalizeToSky (casacore::ImageInterface< casacore::Complex > &iimage)
virtual void	finalizeToSky (casacore::Block< casacore::CountedPtr< casacore::ImageInterface< casacore::Complex > > > &compImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &resImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &weightImageVec, casacore::PtrBlock< casacore::SubImage< casacore::Float > * > &fluxScaleVec, casacore::Bool dopsf, casacore::Block< casacore::Matrix< casacore::Float > > &weightsVec, const VisBuffer &vb)
	Vectorized finalizeToSky. More...
virtual void	finalizeToSkyNew (casacore::Bool dopsf, const VisBuffer &vb, casacore::CountedPtr< SIImageStore > imstore)
virtual void	put (VisBuffer &vb, casacore::Int row=-1, casacore::Bool dopsf=false, FTMachine::Type type=FTMachine::OBSERVED)
	Non const vb version - so that weights can be modified in-place Currently, used only by MultiTermFT. More...
virtual void	correlationToStokes (casacore::ImageInterface< casacore::Complex > &compImage, casacore::ImageInterface< casacore::Float > &resImage, const casacore::Bool dopsf)
	More...
virtual void	stokesToCorrelation (casacore::ImageInterface< casacore::Float > &modelImage, casacore::ImageInterface< casacore::Complex > &compImage)
virtual void	normalizeImage (casacore::ImageInterface< casacore::Float > &skyImage, casacore::Matrix< casacore::Float > &sumOfWts, casacore::ImageInterface< casacore::Float > &sensitivityImage, casacore::Bool dopsf, casacore::Float pblimit, casacore::Int normtype)
virtual casacore::Bool	useWeightImage ()
	All FTMachines that fill weightimage, need to set this. More...
virtual casacore::Bool	isSkyJonesSet ()
virtual casacore::Bool	isSkyJonesChanged (VisBuffer &vb, casacore::Int row)
virtual void	setSkyJones (casacore::Vector< casacore::CountedPtr< SkyJones > > &sj)
	Set SkyJones if image domain corrections /applycation are needed To reset the the FTMachine for stopping image based correction/applycation set in a casacore::Vector of size 0. More...
casacore::Bool	changedSkyJonesLogic (const VisBuffer &vb, casacore::Bool &firstRow, casacore::Bool &internalRow)
template<typename T >
void	getGrid (casacore::Array< T > &thegrid)
	More...
virtual const casacore::CountedPtr < ConvolutionFunction > &	getAWConvFunc ()
virtual void	findConvFunction (const casacore::ImageInterface< casacore::Complex > &, const VisBuffer &)
virtual void	getFluxImage (casacore::ImageInterface< casacore::Float > &image)
	Get a flux (divide by this to get a flux density correct image) image if there is one. More...
virtual void	makeImage (FTMachine::Type type, VisSet &vs, casacore::ImageInterface< casacore::Complex > &image, casacore::Matrix< casacore::Float > &weight)
	Make the entire image. More...
void	girarUVW (casacore::Matrix< casacore::Double > &uvw, casacore::Vector< casacore::Double > &dphase, const VisBuffer &vb)
	More...
void	rotateUVW (casacore::Matrix< casacore::Double > &uvw, casacore::Vector< casacore::Double > &dphase, const VisBuffer &vb)
void	refocus (casacore::Matrix< casacore::Double > &uvw, const casacore::Vector< casacore::Int > &ant1, const casacore::Vector< casacore::Int > &ant2, casacore::Vector< casacore::Double > &dphase, const VisBuffer &vb)
	Refocus on a finite distance. More...
virtual casacore::Bool	toRecord (casacore::String &error, casacore::RecordInterface &outRecord, casacore::Bool withImage=false, const casacore::String diskimagename="")
	Save and restore the FTMachine to and from a record. More...
virtual casacore::Bool	fromRecord (casacore::String &error, const casacore::RecordInterface &inRecord)
virtual casacore::Bool	isFourier ()
	Can this FTMachine be represented by Fourier convolutions? More...
casacore::Bool	setSpw (casacore::Vector< casacore::Int > &spw, casacore::Bool validFrame)
	set spw for cube that will be used; More...
virtual casacore::Bool	doublePrecGrid ()
	return whether the ftmachine is using a double precision grid More...
virtual void	setNoPadding (casacore::Bool nopad)
	To make sure no padding is used in certain gridders. More...
void	setLocation (const casacore::MPosition &loc)
	set and get the location used for frame More...
casacore::MPosition &	getLocation ()
virtual void	setMovingSource (const casacore::String &sourcename)
	set a moving source aka planets or comets => adjust phase center on the fly for gridding More...
virtual void	setMovingSource (const casacore::MDirection &mdir)
void	setPhaseCenterTime (const casacore::Double time)
	set and get Time to calculate phasecenter -1.0 means using the time available at each iteration..this is used when the phasecenter in the field table is either a polynomial or has a ephemerides tables associated with it Using double in the units and epoch-frame of the ms(s)..caller is responsible for conversion More...
casacore::Double	getPhaseCenterTime ()
virtual void	reset ()
	reset stuff in an FTMachine More...
virtual void	setFreqInterpolation (const casacore::String &method)
	set frequency interpolation type More...
virtual void	setPointingDirColumn (const casacore::String &column="DIRECTION")
	tell ftmachine which Pointing table column to use for Direction Mosaic or Single dish ft use this for example More...
virtual casacore::String	getPointingDirColumnInUse ()
virtual void	setSpwChanSelection (const casacore::Cube< casacore::Int > &spwchansels)
virtual casacore::Cube < casacore::Int >	getSpwChanSelection ()
virtual void	setSpwFreqSelection (const casacore::Matrix< casacore::Double > &spwfreqs)
virtual casacore::Matrix < casacore::Double >	getSpwFreqSelection ()
virtual void	setCanComputeResiduals (casacore::Bool &b)
virtual casacore::Bool	canComputeResiduals ()
virtual casacore::Float	getPBLimit ()
void	setnumthreads (casacore::Int n)
	virtual void ComputeResiduals(VBStore& vb)=0; get and set numthreads More...
casacore::Int	getnumthreads ()
virtual void	setCFCache (casacore::CountedPtr< CFCache > &cfc, const casacore::Bool resetCFC=true)
casacore::CountedPtr< CFCache >	getCFCache ()
casacore::String	getCacheDir ()
virtual void	setDryRun (casacore::Bool val)
virtual casacore::Bool	dryRun ()
virtual casacore::Bool	isUsingCFCache ()

Private Member Functions
void	findPBAsConvFunction (const casacore::ImageInterface< casacore::Complex > &image, const VisBuffer &vb)
	Find the Primary beam and convert it into a convolution buffer. More...
casacore::Array < casacore::Complex > *	getDataPointer (const casacore::IPosition &, casacore::Bool)
	Get the appropriate data pointer. More...
casacore::Array < casacore::Float > *	getWDataPointer (const casacore::IPosition &, casacore::Bool)
void	ok ()
void	init ()
void	clipMinMax ()
casacore::Int	getIndex (const casacore::ROMSPointingColumns &mspc, const casacore::Double &time, const casacore::Double &interval=-1.0, const casacore::Int &antid=-1)
casacore::Bool	getXYPos (const VisBuffer &vb, casacore::Int row)
casacore::MDirection	directionMeas (const casacore::ROMSPointingColumns &mspc, const casacore::Int &index)
	get the casacore::MDirection from a chosen column of pointing table More...
casacore::MDirection	directionMeas (const casacore::ROMSPointingColumns &mspc, const casacore::Int &index, const casacore::Double &time)
casacore::MDirection	interpolateDirectionMeas (const casacore::ROMSPointingColumns &mspc, const casacore::Double &time, const casacore::Int &index, const casacore::Int &index1, const casacore::Int &index2)
void	pickWeights (const VisBuffer &vb, casacore::Matrix< casacore::Float > &weight)

Private Attributes
SkyJones *	sj_p
casacore::LatticeCache < casacore::Complex > *	imageCache
	Image cache. More...
casacore::LatticeCache < casacore::Float > *	wImageCache
casacore::Int	cachesize
	Sizes. More...
casacore::Int	tilesize
casacore::Bool	isTiled
	Is this tiled? More...
casacore::ImageInterface < casacore::Float > *	wImage
	Storage for weights. More...
casacore::Lattice < casacore::Complex > *	arrayLattice
	casacore::Array lattice More...
casacore::Lattice < casacore::Float > *	wArrayLattice
casacore::Lattice < casacore::Complex > *	lattice
	Lattice. More...
casacore::Lattice < casacore::Float > *	wLattice
casacore::String	convType
casacore::IPosition	centerLoc
	Useful IPositions. More...
casacore::IPosition	offsetLoc
casacore::Array< casacore::Float >	wGriddedData
	casacore::Array for non-tiled gridding More...
casacore::DirectionCoordinate	directionCoord
casacore::MDirection::Convert *	pointingToImage
casacore::Vector < casacore::Double >	xyPos
casacore::Vector < casacore::Double >	xyPosMovingOrig_p
	Original xypos of moving source. More...
casacore::MDirection	worldPosMeas
casacore::Cube< casacore::Int >	flags
casacore::Vector< casacore::Float >	convFunc
casacore::Int	convSampling
casacore::Int	convSize
casacore::Int	convSupport
casacore::Int	userSetSupport_p
casacore::Float	truncate_p
casacore::Float	gwidth_p
casacore::Float	jwidth_p
casacore::Float	minWeight_p
casacore::Int	lastIndex_p
casacore::Vector< casacore::Int >	lastIndexPerAnt_p
casacore::Bool	useImagingWeight_p
casacore::Int	lastAntID_p
casacore::Int	msId_p
casacore::Bool	isSplineInterpolationReady
SDPosInterpolator *	interpolator
casacore::Bool	clipminmax_
	for minmax clipping More...
casacore::Array < casacore::Complex >	gmin_
casacore::Array < casacore::Complex >	gmax_
casacore::Array< casacore::Float >	wmin_
casacore::Array< casacore::Float >	wmax_
casacore::Array< casacore::Int >	npoints_

Additional Inherited Members
Public Types inherited from casa::FTMachine
enum	Type {   OBSERVED,   MODEL,   CORRECTED,   RESIDUAL,   PSF,   COVERAGE,   N_types,   DEFAULT }
	Types of known Images that may be made using the makeImage method. More...
Static Public Member Functions inherited from casa::FTMachine
static void	locateuvw (const casacore::Double *&uvw, const casacore::Double *&dphase, const casacore::Double *&freq, const casacore::Int &nchan, const casacore::Double *&scale, const casacore::Double *&offset, const casacore::Int &sampling, casacore::Int *&loc, casacore::Int *&off, casacore::Complex *&phasor, const casacore::Int &row, const casacore::Bool &doW=false)
	helper function for openmp to call...no private dependency More...
Public Attributes inherited from casa::FTMachine
casacore::Bool	isDryRun
Protected Member Functions inherited from casa::FTMachine
casacore::LogIO &	logIO ()
virtual void	initMaps (const VisBuffer &vb)
virtual void	initPolInfo (const VisBuffer &vb)
virtual void	gridOk (casacore::Int gridsupport)
	check if image is big enough for gridding More...
casacore::Bool	matchChannel (const casacore::Int &spw, const VisBuffer &vb)
casacore::Bool	matchAllSpwChans (const VisBuffer &vb)
	redo all spw chan match especially if ms has changed underneath More...
virtual casacore::Bool	interpolateFrequencyTogrid (const VisBuffer &vb, const casacore::Matrix< casacore::Float > &wt, casacore::Cube< casacore::Complex > &data, casacore::Cube< casacore::Int > &flag, casacore::Matrix< casacore::Float > &weight, FTMachine::Type type=FTMachine::OBSERVED)
	interpolate visibility data of vb to grid frequency definition flag will be set the one as described in interpolateArray1D return false if no interpolation is done...for e.g for nearest case More...
virtual casacore::Bool	interpolateFrequencyFromgrid (VisBuffer &vb, casacore::Cube< casacore::Complex > &data, FTMachine::Type type=FTMachine::MODEL)
	degridded data interpolated back onto visibilities More...
virtual void	getInterpolateArrays (const VisBuffer &vb, casacore::Cube< casacore::Complex > &data, casacore::Cube< casacore::Int > &flag)
	Interpolate visibilities to be degridded upon. More...
void	setSpectralFlag (const VisBuffer &vb, casacore::Cube< casacore::Bool > &modflagcube)
casacore::Bool	saveMeasure (casacore::RecordInterface &rec, const casacore::String &name, casacore::String &error, const casacore::Measure &ms)
	helper to save Measures in a record More...
Protected Attributes inherited from casa::FTMachine
casacore::LogIO	logIO_p
casacore::ImageInterface < casacore::Complex > *	image
casacore::UVWMachine *	uvwMachine_p
casacore::CountedPtr < casacore::UVWMachine >	phaseShifter_p
casacore::MeasFrame	mFrame_p
casacore::Bool	tangentSpecified_p
	Direction of desired tangent plane. More...
casacore::MDirection	mTangent_p
casacore::MDirection	mImage_p
casacore::MDirection	movingDir_p
	moving source stuff More...
casacore::Bool	fixMovingSource_p
casacore::MDirection	firstMovingDir_p
casacore::Double	distance_p
casacore::uInt	nAntenna_p
casacore::Int	lastFieldId_p
casacore::Int	lastMSId_p
casacore::Bool	useDoubleGrid_p
	Use douple precision grid in gridding process. More...
casacore::Matrix < casacore::Double >	sumWeight
	Sum of weights per polarization and per chan. More...
casacore::Matrix < casacore::Double >	sumCFWeight
casacore::Int	nx
	Sizes. More...
casacore::Int	ny
casacore::Int	npol
casacore::Int	nchan
casacore::Int	nvischan
casacore::Int	nvispol
casacore::Vector< casacore::Int >	chanMap
	Maps of channels and polarization. More...
casacore::Vector< casacore::Int >	polMap
casacore::Bool	isIOnly
	Is casacore::Stokes I only? iso XX,XY,YX,YY or LL,LR,RL,RR. More...
casacore::MPosition	mLocation_p
	Default Position used for phase rotations. More...
casacore::Bool	doUVWRotation_p
	Set if uvwrotation is necessary. More...
casacore::Block < casacore::Vector < casacore::Int > >	multiChanMap_p
	setup multiple spectral window for cubes More...
casacore::Vector< casacore::Int >	selectedSpw_p
casacore::Vector< casacore::Int >	nVisChan_p
casacore::SpectralCoordinate	spectralCoord_p
	Private variables needed for spectral frame conversion. More...
casacore::Vector< casacore::Bool >	doConversion_p
casacore::Bool	freqFrameValid_p
casacore::Vector < casacore::Double >	imageFreq_p
casacore::Vector < casacore::Double >	lsrFreq_p
	casacore::Vector of float lsrfreq needed for regridding More...
casacore::Vector < casacore::Double >	interpVisFreq_p
casacore::InterpolateArray1D < casacore::Double, casacore::Complex > ::InterpolationMethod	freqInterpMethod_p
casacore::String	pointingDirCol_p
casacore::Cube< casacore::Int >	spwChanSelFlag_p
casacore::Matrix < casacore::Double >	spwFreqSel_p
casacore::Matrix < casacore::Double >	expandedSpwFreqSel_p
casacore::Matrix < casacore::Double >	expandedSpwConjFreqSel_p
casacore::Vector< casacore::Int >	cfStokes_p
casacore::Int	polInUse_p
casacore::CountedPtr< CFCache >	cfCache_p
CFStore	cfs_p
CFStore	cfwts_p
casacore::CountedPtr< CFStore2 >	cfs2_p
casacore::CountedPtr< CFStore2 >	cfwts2_p
casacore::CountedPtr < ConvolutionFunction >	convFuncCtor_p
casacore::CountedPtr < PolOuterProduct >	pop_p
casacore::Bool	canComputeResiduals_p
casacore::Bool	toVis_p
casacore::Int	numthreads_p
casacore::Array < casacore::Complex >	griddedData
	casacore::Array for non-tiled gridding These are common to most FTmachines More...
casacore::Array < casacore::DComplex >	griddedData2
casacore::Float	pbLimit_p
casacore::Vector < casacore::CountedPtr < SkyJones > >	sj_p
	casacore::Vector<SkyJones *> sj_p; More...
casacore::CountedPtr < casacore::ImageInterface < casacore::Complex > >	cmplxImage_p
	A holder for the complex image if nobody else is keeping it. More...
FFT2D	ft_p
casacore::Double	phaseCenterTime_p

Detailed Description

An FTMachine for Gridding Single Dish data.

Intended use:

Public interface

Prerequisite

• FTMachine module
• SkyEquation module
• VisBuffer module

Etymology

FTMachine is a Machine for Fourier Transforms. SDGrid does Single Dish gridding in a similar way

Synopsis

The SkyEquation needs to be able to perform Fourier transforms on visibility data and to grid single dish data. SDGrid allows efficient Single Dish 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. direction coordinates).

Gridding and degridding in SDGrid are performed using a novel sort-less algorithm. In this approach, the gridded plane is divided into small patches, a cache of which is maintained in memory using a general-purpose LatticeCache class. As the (time-sorted) visibility data move around slowly in the image plane, patches are swapped in and out as necessary. Thus, optimally, one would keep at least one patch per scan line of data.

A grid cache is defined on construction. If the gridded image plane is smaller than this, it is kept entirely in memory and all gridding and degridding is done entirely in memory. Otherwise a cache of tiles is kept an paged in and out as necessary. Optimally the cache should be big enough to hold all polarizations and frequencies for one complete scan line. The paging rate will then be small. As the cache size is reduced below this critical value, paging increases. The algorithm will work for only one patch but it will be very slow!

The gridding and degridding steps are implemented in Fortran for speed. In gridding, the visibilities are added onto the grid points in the neighborhood using a weighting function. In degridding, the value is derived by a weight summ of the same points, using the same weighting function.

Example

See the example for SkyModel.

Motivation

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

Definition at line 118 of file SDGrid.h.

Constructor & Destructor Documentation

casa::SDGrid::SDGrid	(	SkyJones &	sj,
		casacore::Int	cachesize,
		casacore::Int	tilesize,
		casacore::String	convType = "BOX",
		casacore::Int	userSupport = -1,
		casacore::Bool	useImagingWeight = false
	)

Constructor: cachesize is the size of the cache in words (e.g.

a few million is a good number), tilesize is the size of the tile used in gridding (cannot be less than 12, 16 works in most cases), and convType is the type of gridding used (SF is prolate spheriodal wavefunction, and BOX is plain box-car summation). mLocation is the position to be used in some phase rotations. If mTangent is specified then the uvw rotation is done for that location iso the image center. userSupport is to allow larger support for the convolution if the user wants it..-1 will use the default i.e 1 for BOX and 3 for others USEIMAGINGWEIGHT The parameter useImagingWeight in the constructors is to explicitly use vb.imagingweight while gridding, When doing just SD imaging then setting it to false is fine (in fact recommended as vb.imagingweight is set to zero if any pol is flagged this may change later.....today being 2014/08/06) when using it in conjuction with interferometer gridding then set useImagingWeight to true this is to allow for proper non natural weighting scheme while imaging

casa::SDGrid::SDGrid	(	casacore::MPosition &	ml,
		SkyJones &	sj,
		casacore::Int	cachesize,
		casacore::Int	tilesize,
		casacore::String	convType = "BOX",
		casacore::Int	userSupport = -1,
		casacore::Float	minweight = 0.,
		casacore::Bool	clipminmax = false,
		casacore::Bool	useImagingWeight = false
	)

casa::SDGrid::SDGrid	(	casacore::Int	cachesize,
		casacore::Int	tilesize,
		casacore::String	convType = "BOX",
		casacore::Int	userSupport = -1,
		casacore::Bool	useImagingWeight = false
	)

casa::SDGrid::SDGrid	(	casacore::MPosition &	ml,
		casacore::Int	cachesize,
		casacore::Int	tilesize,
		casacore::String	convType = "BOX",
		casacore::Int	userSupport = -1,
		casacore::Float	minweight = 0.,
		casacore::Bool	clipminmax = false,
		casacore::Bool	useImagingWeight = false
	)

casa::SDGrid::SDGrid	(	casacore::MPosition &	ml,
		casacore::Int	cachesize,
		casacore::Int	tilesize,
		casacore::String	convType = "TGAUSS",
		casacore::Float	truncate = -1.0,
		casacore::Float	gwidth = 0.0,
		casacore::Float	jwidth = 0.0,
		casacore::Float	minweight = 0.,
		casacore::Bool	clipminmax = false,
		casacore::Bool	useImagingWeight = false
	)

casa::SDGrid::SDGrid

(

const SDGrid &

other

)

Copy constructor.

casa::SDGrid::~SDGrid

(

)

Member Function Documentation

virtual casacore::Bool casa::SDGrid::changed ( const VisBuffer &  vb )

virtual

Has this operator changed since the last application?

Reimplemented from casa::FTMachine.

void casa::SDGrid::clipMinMax ( )

private

virtual void casa::SDGrid::ComputeResiduals ( VisBuffer &  vb, casacore::Bool  useCorrected  )

inlinevirtual

Make the VB and VBStore interefaces for the interim re-factoring work.

Finally removed the VB interface.

Implements casa::FTMachine.

Definition at line 213 of file SDGrid.h.

casacore::MDirection casa::SDGrid::directionMeas ( const casacore::ROMSPointingColumns &  mspc, const casacore::Int &  index  )

private

get the casacore::MDirection from a chosen column of pointing table

casacore::MDirection casa::SDGrid::directionMeas ( const casacore::ROMSPointingColumns &  mspc, const casacore::Int &  index, const casacore::Double &  time  )

private

void casa::SDGrid::finalizeToSky ( )

virtual

Finalize transform to Sky plane: flushes the image cache and shows statistics if it is being used.

DOES NOT DO THE FINAL TRANSFORM!

Implements casa::FTMachine.

void casa::SDGrid::finalizeToVis ( )

virtual

Finalize transform to Visibility plane: flushes the image cache and shows statistics if it is being used.

Implements casa::FTMachine.

void casa::SDGrid::findPBAsConvFunction ( const casacore::ImageInterface< casacore::Complex > &  image, const VisBuffer &  vb  )

private

Find the Primary beam and convert it into a convolution buffer.

void casa::SDGrid::get ( VisBuffer &  vb, casacore::Int  row = -1  )

virtual

Get actual coherence from grid by degridding.

Implements casa::FTMachine.

casacore::Array<casacore::Complex>* casa::SDGrid::getDataPointer ( const casacore::IPosition &  , casacore::Bool    )

private

Get the appropriate data pointer.

casacore::ImageInterface<casacore::Complex>& casa::SDGrid::getImage ( casacore::Matrix< casacore::Float > &  , casacore::Bool  normalize = true  )

virtual

Get the final image: optionally normalize by the summed weights.

Implements casa::FTMachine.

casacore::Int casa::SDGrid::getIndex ( const casacore::ROMSPointingColumns &  mspc, const casacore::Double &  time, const casacore::Double &  interval = -1.0, const casacore::Int &  antid = -1  )

private

casacore::Array<casacore::Float>* casa::SDGrid::getWDataPointer ( const casacore::IPosition &  , casacore::Bool    )

private

void casa::SDGrid::getWeightImage ( casacore::ImageInterface< casacore::Float > &  , casacore::Matrix< casacore::Float > &    )

virtual

Get the final weights image.

Implements casa::FTMachine.

casacore::Bool casa::SDGrid::getXYPos ( const VisBuffer &  vb, casacore::Int  row  )

private

void casa::SDGrid::init ( )

private

void casa::SDGrid::initializeToSky ( casacore::ImageInterface< casacore::Complex > &  image, casacore::Matrix< casacore::Float > &  weight, const VisBuffer &  vb  )

virtual

Initialize transform to Sky plane: initializes the image.

Implements casa::FTMachine.

void casa::SDGrid::initializeToVis ( casacore::ImageInterface< casacore::Complex > &  image, const VisBuffer &  vb  )

virtual

Initialize transform to Visibility plane using the image as a template.

The image is loaded and Fourier transformed.

Implements casa::FTMachine.

casacore::MDirection casa::SDGrid::interpolateDirectionMeas ( const casacore::ROMSPointingColumns &  mspc, const casacore::Double &  time, const casacore::Int &  index, const casacore::Int &  index1, const casacore::Int &  index2  )

private

virtual void casa::SDGrid::makeImage ( FTMachine::Type  type, ROVisibilityIterator &  vi, casacore::ImageInterface< casacore::Complex > &  image, casacore::Matrix< casacore::Float > &  weight  )

virtual

Make the entire image using a ROVisIter...

This is an overload for FTMachine version as SDGrid now does everything in memory so for large cube..proceed by slices that fit in memory here.

Reimplemented from casa::FTMachine.

virtual casacore::String casa::SDGrid::name ( ) const

virtual

Return the name of the machine.

Implements casa::FTMachine.

virtual void casa::SDGrid::normalizeImage ( casacore::Lattice< casacore::Complex > &  , const casacore::Matrix< casacore::Double > &  , casacore::Lattice< casacore::Float > &  , casacore::Bool    )

inlinevirtual

Reimplemented from casa::FTMachine.

Definition at line 201 of file SDGrid.h.

void casa::SDGrid::ok ( )

privatevirtual

Reimplemented from casa::FTMachine.

SDGrid& casa::SDGrid::operator=

(

const SDGrid &

other

)

Assignment operator.

void casa::SDGrid::pickWeights ( const VisBuffer &  vb, casacore::Matrix< casacore::Float > &  weight  )

private

void casa::SDGrid::put ( const VisBuffer &  vb, casacore::Int  row = -1, casacore::Bool  dopsf = false, FTMachine::Type  type = FTMachine::OBSERVED  )

virtual

Put coherence to grid by gridding.

Implements casa::FTMachine.

virtual void casa::SDGrid::setMiscInfo ( const casacore::Int  qualifier )

inlinevirtual

set the order of the Taylor term for MFS this is to tell A-casacore::Projection to qualify the accumulated avgPB for each Taylor term in the CFCache.

Implements casa::FTMachine.

Definition at line 212 of file SDGrid.h.

Member Data Documentation

casacore::Lattice<casacore::Complex>* casa::SDGrid::arrayLattice

private

casacore::Array lattice

Definition at line 247 of file SDGrid.h.

casacore::Int casa::SDGrid::cachesize

private

Sizes.

Definition at line 238 of file SDGrid.h.

casacore::IPosition casa::SDGrid::centerLoc

private

Useful IPositions.

Definition at line 258 of file SDGrid.h.

casacore::Bool casa::SDGrid::clipminmax_

private

for minmax clipping

Definition at line 298 of file SDGrid.h.

casacore::Vector<casacore::Float> casa::SDGrid::convFunc

private

Definition at line 276 of file SDGrid.h.

casacore::Int casa::SDGrid::convSampling

private

Definition at line 277 of file SDGrid.h.

casacore::Int casa::SDGrid::convSize

private

Definition at line 278 of file SDGrid.h.

casacore::Int casa::SDGrid::convSupport

private

Definition at line 279 of file SDGrid.h.

casacore::String casa::SDGrid::convType

private

Definition at line 255 of file SDGrid.h.

casacore::DirectionCoordinate casa::SDGrid::directionCoord

private

Definition at line 264 of file SDGrid.h.

casacore::Cube<casacore::Int> casa::SDGrid::flags

private

Definition at line 274 of file SDGrid.h.

casacore::Array<casacore::Complex> casa::SDGrid::gmax_

private

Definition at line 300 of file SDGrid.h.

casacore::Array<casacore::Complex> casa::SDGrid::gmin_

private

Definition at line 299 of file SDGrid.h.

casacore::Float casa::SDGrid::gwidth_p

private

Definition at line 283 of file SDGrid.h.

casacore::LatticeCache<casacore::Complex>* casa::SDGrid::imageCache

private

Image cache.

Definition at line 234 of file SDGrid.h.

SDPosInterpolator* casa::SDGrid::interpolator

private

Definition at line 295 of file SDGrid.h.

casacore::Bool casa::SDGrid::isSplineInterpolationReady

private

Definition at line 294 of file SDGrid.h.

casacore::Bool casa::SDGrid::isTiled

private

Is this tiled?

Definition at line 241 of file SDGrid.h.

casacore::Float casa::SDGrid::jwidth_p

private

Definition at line 284 of file SDGrid.h.

casacore::Int casa::SDGrid::lastAntID_p

private

Definition at line 291 of file SDGrid.h.

casacore::Int casa::SDGrid::lastIndex_p

private

Definition at line 288 of file SDGrid.h.

casacore::Vector<casacore::Int> casa::SDGrid::lastIndexPerAnt_p

private

Definition at line 289 of file SDGrid.h.

casacore::Lattice<casacore::Complex>* casa::SDGrid::lattice

private

Lattice.

For non-tiled gridding, this will point to arrayLattice, whereas for tiled gridding, this points to the image

Definition at line 252 of file SDGrid.h.

casacore::Float casa::SDGrid::minWeight_p

private

Definition at line 286 of file SDGrid.h.

casacore::Int casa::SDGrid::msId_p

private

Definition at line 292 of file SDGrid.h.

casacore::Array<casacore::Int> casa::SDGrid::npoints_

private

Definition at line 303 of file SDGrid.h.

casacore::IPosition casa::SDGrid::offsetLoc

private

Definition at line 258 of file SDGrid.h.

casacore::MDirection::Convert* casa::SDGrid::pointingToImage

private

Definition at line 266 of file SDGrid.h.

SkyJones* casa::SDGrid::sj_p

private

Definition at line 223 of file SDGrid.h.

casacore::Int casa::SDGrid::tilesize

private

Definition at line 238 of file SDGrid.h.

casacore::Float casa::SDGrid::truncate_p

private

Definition at line 282 of file SDGrid.h.

casacore::Bool casa::SDGrid::useImagingWeight_p

private

Definition at line 290 of file SDGrid.h.

casacore::Int casa::SDGrid::userSetSupport_p

private

Definition at line 280 of file SDGrid.h.

casacore::Lattice<casacore::Float>* casa::SDGrid::wArrayLattice

private

Definition at line 248 of file SDGrid.h.

casacore::Array<casacore::Float> casa::SDGrid::wGriddedData

private

casacore::Array for non-tiled gridding

Definition at line 261 of file SDGrid.h.

casacore::ImageInterface<casacore::Float>* casa::SDGrid::wImage

private

Storage for weights.

Definition at line 244 of file SDGrid.h.

casacore::LatticeCache<casacore::Float>* casa::SDGrid::wImageCache

private

Definition at line 235 of file SDGrid.h.

casacore::Lattice<casacore::Float>* casa::SDGrid::wLattice

private

Definition at line 253 of file SDGrid.h.

casacore::Array<casacore::Float> casa::SDGrid::wmax_

private

Definition at line 302 of file SDGrid.h.

casacore::Array<casacore::Float> casa::SDGrid::wmin_

private

Definition at line 301 of file SDGrid.h.

casacore::MDirection casa::SDGrid::worldPosMeas

private

Definition at line 272 of file SDGrid.h.

casacore::Vector<casacore::Double> casa::SDGrid::xyPos

private

Definition at line 268 of file SDGrid.h.

casacore::Vector<casacore::Double> casa::SDGrid::xyPosMovingOrig_p

private

Original xypos of moving source.

Definition at line 270 of file SDGrid.h.

---

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

• casa/code/synthesis/MeasurementComponents/SDGrid.h