StatWT sets WEIGHT and SIGMA statistically. More...

#include <StatWT.h>

Inheritance diagram for casa::StatWT:

Public Member Functions
	StatWT (const ROVisibilityIterator &vi, const casacore::MS::PredefinedColumns datacol=casacore::MS::DATA, const casacore::String &fitspw="", const casacore::String &outspw="", const casacore::Bool dorms=false, const casacore::uInt minsamp=2, const std::vector< casacore::uInt > selcorrs=std::vector< casacore::uInt >())
	Construct an object that will set the weights and sigmas of vi's casacore::MeasurementSet, as selected by outspw, according to the scatter of the visibilities selected by fitspw. More...

Copy construct	StatWT (const StatWT &other)

Destructor *virtual	~StatWT ()

virtual Assignment StatWT &	operator= (const StatWT &gw)

virtual asyncio::PrefetchColumns *	prefetchColumns () const

This is where all the work gets done *virtual casacore::Bool	process (VisBuffGroup &vbg)
	This is where all the work gets done! More...

Public Member Functions inherited from casa::GroupWorker
	GroupWorker (const ROVisibilityIterator &invi)

Copy construct	GroupWorker (const GroupWorker &gw)

Destructor *virtual	~GroupWorker ()

virtual Assignment GroupWorker &	operator= (const GroupWorker &gw)

Public Member Functions inherited from casa::GroupWorkerBase
	GroupWorkerBase ()
	Create empty GroupWorkerBase you can assign to or attach. More...

Copy construct	GroupWorkerBase (const GroupWorkerBase &other)

Destructor *virtual	~GroupWorkerBase ()

virtual Assignment GroupWorkerBase &	operator= (const GroupWorkerBase &gw)

Private Member Functions
	StatWT ()
	Disable null c'tor. More...

casacore::Bool	update_variances (std::map< casacore::uInt, casacore::Vector< casacore::uInt > > &ns, std::map< casacore::uInt, casacore::Vector< casacore::Complex > > &means, std::map< casacore::uInt, casacore::Vector< casacore::Double > > &variances, const VisBuffer &vb, const casacore::Cube< casacore::Bool > &chanmaskedflags, const casacore::uInt maxAnt)

casacore::Bool	apply_variances (VisBuffer &vb, std::map< casacore::uInt, casacore::Vector< casacore::uInt > > &ns, std::map< casacore::uInt, casacore::Vector< casacore::Double > > &variances, const casacore::uInt maxAnt)
	ns and variances are effectively const here, but declaring them that way would take some gymnastics. More...

casacore::uInt	hashFunction (const casacore::Int ant1, const casacore::Int ant2, const casacore::Int maxAnt)
	Compute a baseline (row) index (ant1, ant2). More...

Private Attributes
casacore::MS::PredefinedColumns	datacol_p
	Initialized by c'tor: More...

casacore::String	fitspw_p

casacore::String	outspw_p

casacore::Bool	dorms_p

casacore::uInt	rowsdone_p

std::set< casacore::Int >	outspws_p

casacore::uInt	minsamp_p
	Otherwise, use the standard sample variance. More...

std::vector< casacore::uInt >	selcorrs_p
	a variance. More...

std::map< casacore::Int, casacore::Vector < casacore::Bool > * >	fitmask_p
	Not initialized by c'tor: std::set<casacore::Int> appliedSpWs_p; More...

Additional Inherited Members
Protected Attributes inherited from casa::GroupWorker
ROVisibilityIterator	invi_p

VisibilityIterator	outvi_p

Protected Attributes inherited from casa::GroupWorkerBase
asyncio::PrefetchColumns	prefetchColumns_p

Detailed Description

StatWT sets WEIGHT and SIGMA statistically.

Intended use:

Public interface

Prerequisite

Etymology

StatWT sets WEIGHT and SIGMA statistically.

Synopsis

Set the weights and sigmas according to the scatter of the visibilities.

To Do

Definition at line 69 of file StatWT.h.

Constructor & Destructor Documentation

casa::StatWT::StatWT	(	const ROVisibilityIterator &	vi,
		const casacore::MS::PredefinedColumns	datacol = `casacore::MS::DATA`,
		const casacore::String &	fitspw = `"*"`,
		const casacore::String &	outspw = `"*"`,
		const casacore::Bool	dorms = `false`,
		const casacore::uInt	minsamp = `2`,
		const std::vector< casacore::uInt >	selcorrs = `std::vector< casacore::uInt >()`
	)

Construct an object that will set the weights and sigmas of vi's casacore::MeasurementSet, as selected by outspw, according to the scatter of the visibilities selected by fitspw.

If dorms is true, assume that the true mean is 0. Otherwise, use the standard sample variance.

For each baseline and correlation, if fitspw does not select at least minsamp unflagged visibilities, it will be flagged and weight and sigma will not be calculated. minsamp is effectively at least 2.

Copy construct casa::StatWT::StatWT ( const StatWT & other )

inline

Definition at line 90 of file StatWT.h.

Destructor* virtual casa::StatWT::~StatWT ( )

virtual

casa::StatWT::StatWT ( )

private

Disable null c'tor.

Member Function Documentation

casacore::Bool casa::StatWT::apply_variances	(	VisBuffer &	vb,
		std::map< casacore::uInt, casacore::Vector< casacore::uInt > > &	ns,
		std::map< casacore::uInt, casacore::Vector< casacore::Double > > &	variances,
		const casacore::uInt	maxAnt
	)

private

ns and variances are effectively const here, but declaring them that way would take some gymnastics.

casacore::uInt casa::StatWT::hashFunction	(	const casacore::Int	ant1,
		const casacore::Int	ant2,
		const casacore::Int	maxAnt
	)

inlineprivate

Compute a baseline (row) index (ant1, ant2).

It ASSUMES that ant1 and ant2 are both <= maxAnt.

Definition at line 123 of file StatWT.h.

virtual Assignment StatWT& casa::StatWT::operator= ( const StatWT & gw )

inlinevirtual

Definition at line 96 of file StatWT.h.

virtual asyncio::PrefetchColumns* casa::StatWT::prefetchColumns ( ) const

virtual

Reimplemented from casa::GroupWorkerBase.

This is where all the work gets done* virtual casacore::Bool casa::StatWT::process ( VisBuffGroup & vbg )

virtual

This is where all the work gets done!

Implements casa::GroupWorkerBase.

casacore::Bool casa::StatWT::update_variances	(	std::map< casacore::uInt, casacore::Vector< casacore::uInt > > &	ns,
		std::map< casacore::uInt, casacore::Vector< casacore::Complex > > &	means,
		std::map< casacore::uInt, casacore::Vector< casacore::Double > > &	variances,
		const VisBuffer &	vb,
		const casacore::Cube< casacore::Bool > &	chanmaskedflags,
		const casacore::uInt	maxAnt
	)

private

Member Data Documentation

casacore::MS::PredefinedColumns casa::StatWT::datacol_p

private

Initialized by c'tor:

Which of DATA, MODEL_DATA, or CORRECTED_DATA to fit. It will always write to DATA if datacols_p.nelements() == 1, and write to all 3 otherwise. Thus datacols_p.nelements() should be either 1 or 3. 4 and 2 are right out, and FLOAT_DATA isn't handled by this yet.

Definition at line 134 of file StatWT.h.

casacore::Bool casa::StatWT::dorms_p

private

Definition at line 138 of file StatWT.h.

std::map<casacore::Int, casacore::Vector<casacore::Bool>*> casa::StatWT::fitmask_p

private

Not initialized by c'tor:

std::set<casacore::Int> appliedSpWs_p;

Definition at line 147 of file StatWT.h.

casacore::String casa::StatWT::fitspw_p

private

Definition at line 136 of file StatWT.h.

casacore::uInt casa::StatWT::minsamp_p

private

Otherwise, use the standard sample variance.

Definition at line 142 of file StatWT.h.

casacore::String casa::StatWT::outspw_p

private

Definition at line 137 of file StatWT.h.

std::set<casacore::Int> casa::StatWT::outspws_p

private

Definition at line 140 of file StatWT.h.

casacore::uInt casa::StatWT::rowsdone_p

private

Definition at line 139 of file StatWT.h.

std::vector<casacore::uInt> casa::StatWT::selcorrs_p

private

a variance.

Definition at line 144 of file StatWT.h.

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

casa/code/msvis/MSVis/StatWT.h

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Prerequisite

Etymology

Synopsis

To Do

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation