Class to define a mask as a LEL expression. More...

#include <WCLELMask.h>

Inheritance diagram for casacore::WCLELMask:

Public Member Functions
	WCLELMask ()

	WCLELMask (const String &command)
	Construct from the given expression command. More...

	WCLELMask (const char *command)

	WCLELMask (const ImageExpr< Bool > &expr)
	Construct from the given image expression. More...

	WCLELMask (const LatticeExpr< Bool > &expr)
	Construct from the given lattice expression. More...

	WCLELMask (const LatticeExprNode &expr)
	Construct from the given lattice expression. More...

	WCLELMask (const WCLELMask &other)
	Copy constructor (copy semantics). More...

virtual	~WCLELMask ()
	Destructor. More...

WCLELMask &	operator= (const WCLELMask &other)
	Assignment (copy semantics) More...

virtual Bool	operator== (const WCRegion &other) const
	Comparison. More...

virtual WCRegion *	cloneRegion () const
	Clone a WCLELMask object. More...

virtual uInt	ndim () const
	Get the dimensionality (i.e. More...

virtual Bool	canExtend () const
	WCLELMask cannot extend a region. More...

virtual LCRegion *	toLCRegion (const CoordinateSystem &cSys, const IPosition &latticeShape) const
	Convert to an LCRegion using the given new coordinate system and shape. More...

virtual LCRegion *	doToLCRegion (const CoordinateSystem &cSys, const IPosition &latticeShape, const IPosition &pixelAxesMap, const IPosition &outOrder) const
	Convert to an LCRegion using the supplied `CoordinateSystem` and shape. More...

virtual TableRecord	toRecord (const String &tableName) const
	Convert the WCLELMask object to a record. More...

virtual String	type () const
	Return region type. More...

const ImageExpr< Bool > *	getImageExpr () const

Public Member Functions inherited from casacore::WCRegion
	WCRegion ()

	WCRegion (const WCRegion &other)
	Copy constructor (copy semantics). More...

virtual	~WCRegion ()
	Destructor. More...

Bool	operator!= (const WCRegion &other) const

const Record &	getAxesDesc () const
	Get the description of all axes. More...

const Record &	getAxisDesc (uInt axis) const
	Get the description of the given axis. More...

Int	axisNr (const Record &desc, const Record &axesDesc) const
	Return the axis number of the description of an axis in the full axes description. More...

Bool	isAxisDescEqual (const Record &desc1, const Record &desc2) const
	Are both axis descriptions equal? More...

const String &	comment () const
	Get or set the comment. More...

void	setComment (const String &comment)

LCRegion *	toLCRegionAxes (const CoordinateSystem &cSys, const IPosition &shape, const IPosition &pixelAxesMap, const IPosition &outOrder) const
	Convert to an LCRegion using the given coordinate system and shape. More...

void	defineRecordFields (RecordInterface &record, const String &className) const
	Define the type and class name in the record. More...

Static Public Member Functions
static WCLELMask *	fromRecord (const TableRecord &rec, const String &tableName)
	Convert to a WCLELMask from a record. More...

static String	className ()
	Returns WCLELMask. More...

Static Public Member Functions inherited from casacore::WCRegion
static WCRegion *	fromRecord (const TableRecord &rec, const String &tableName)
	Convert correct object from a record. More...

Private Member Functions
void	processCommand ()
	Process the command. More...

void	init (const LatticeExprNode &expr)
	Initialize as a LatticeExprNode if expression's shape is unknown. More...

Private Attributes
String	itsCommand

ImageExpr< Bool > *	itsImageExpr

LatticeExpr< Bool > *	itsLattExpr

LatticeExprNode *	itsLattNode

Additional Inherited Members
Protected Member Functions inherited from casacore::WCRegion
WCRegion &	operator= (const WCRegion &other)
	Assignment (copy semantics) makes only sense for a derived class. More...

void	addAxisDesc (const Record &axisDesc)
	Add an axis with its description. More...

Record	makeAxisDesc (const CoordinateSystem &cSys, uInt pixelAxis) const
	Make a description of a pixel axis in the coordinate system. More...

Record	makeAxesDesc (const CoordinateSystem &cSys) const
	Make a description of all pixel axes in the coordinate system (in pixel axes order). More...

void	makeWorldAbsolute (Vector< Double > &world, const Vector< Int > &absRel, const CoordinateSystem &cSys, const IPosition &shape) const
	Convert relative to absolute world as needed. More...

void	checkAxes (const IPosition &pixelAxes, const CoordinateSystem &cSys, const Vector< String > &quantityUnits) const

Static Protected Member Functions inherited from casacore::WCRegion
static void	unitInit ()

static void	convertPixel (Double &pixel, const Double &value, const String &unit, const Int absRel, const Double refPix, const Int shape)

Detailed Description

Class to define a mask as a LEL expression.

Intended use:

Public interface

Prerequisite

Synopsis

The WCLELMask class is a specialization of class WCRegion.
It can be used to define an on-the-fly mask for an image using a boolean LatticeExpr. The contents of the mask are calculated on the fly from the expression. Thus the mask may change if the data in the image(s) used in the expression change.
Caution: This mask is only persistent if constructed from an expression string; When constructed from an ImageExpr the mask is not persistent;

Example

Motivation

Users must be able to specify a mask based on an expression.

Definition at line 92 of file WCLELMask.h.

Constructor & Destructor Documentation

casacore::WCLELMask::WCLELMask ( )

casacore::WCLELMask::WCLELMask ( const String & command )

explicit

Construct from the given expression command.

The command will be parsed and converted to an ImageExpr.

casacore::WCLELMask::WCLELMask ( const char * command )

explicit

casacore::WCLELMask::WCLELMask ( const ImageExpr< Bool > & expr )

explicit

Construct from the given image expression.

casacore::WCLELMask::WCLELMask ( const LatticeExpr< Bool > & expr )

explicit

Construct from the given lattice expression.

casacore::WCLELMask::WCLELMask ( const LatticeExprNode & expr )

explicit

Construct from the given lattice expression.

This constructor makes it possible to have an expression with an unknown shape (e.g. using LEL function INDEXIN). If the shape is known, the LatticeExprNode will be converted to a LatticeExpr<Bool>.

casacore::WCLELMask::WCLELMask ( const WCLELMask & other )

Copy constructor (copy semantics).

virtual casacore::WCLELMask::~WCLELMask ( )

virtual

Destructor.

Member Function Documentation

virtual Bool casacore::WCLELMask::canExtend ( ) const

virtual

WCLELMask cannot extend a region.

Reimplemented from casacore::WCRegion.

static String casacore::WCLELMask::className ( )

static

Returns WCLELMask.

virtual WCRegion* casacore::WCLELMask::cloneRegion ( ) const

virtual

Clone a WCLELMask object.

Implements casacore::WCRegion.

virtual LCRegion* casacore::WCLELMask::doToLCRegion	(	const CoordinateSystem &	cSys,
		const IPosition &	latticeShape,
		const IPosition &	pixelAxesMap,
		const IPosition &	outOrder
	)		const

virtual

Convert to an LCRegion using the supplied CoordinateSystem and shape.

It checks that coordinates match and that axes are not swapped.

Implements casacore::WCRegion.

static WCLELMask* casacore::WCLELMask::fromRecord	(	const TableRecord &	rec,
		const String &	tableName
	)

static

Convert to a WCLELMask from a record.

const ImageExpr<Bool>* casacore::WCLELMask::getImageExpr ( ) const

inline

Definition at line 169 of file WCLELMask.h.

References itsImageExpr.

void casacore::WCLELMask::init ( const LatticeExprNode & expr )

private

Initialize as a LatticeExprNode if expression's shape is unknown.

Otherwise as a LatticeExpr<Bool> if coordinates are unknown. Otherwise as an ImageExpr<Bool>.

virtual uInt casacore::WCLELMask::ndim ( ) const

virtual

Get the dimensionality (i.e.

the number of axes).

Reimplemented from casacore::WCRegion.

WCLELMask& casacore::WCLELMask::operator= ( const WCLELMask & other )

Assignment (copy semantics)

virtual Bool casacore::WCLELMask::operator== ( const WCRegion & other ) const

virtual

Comparison.

Reimplemented from casacore::WCRegion.

void casacore::WCLELMask::processCommand ( )

private

Process the command.

virtual LCRegion* casacore::WCLELMask::toLCRegion	(	const CoordinateSystem &	cSys,
		const IPosition &	latticeShape
	)		const

virtual

Convert to an LCRegion using the given new coordinate system and shape.

If the region has coordinates, the WCRegion implementation will be called. Otherwise the LatticeExpr is returned after checking that the shape matches.

Reimplemented from casacore::WCRegion.

virtual TableRecord casacore::WCLELMask::toRecord ( const String & tableName ) const

virtual

Convert the WCLELMask object to a record.

The record can be used to make the object persistent. The tableName argument can be used by derived classes (e.g. LCPagedMask) to put very large objects.

Implements casacore::WCRegion.

virtual String casacore::WCLELMask::type ( ) const

virtual

Return region type.

Returns the class name

Implements casacore::WCRegion.

Member Data Documentation

String casacore::WCLELMask::itsCommand

private

Definition at line 181 of file WCLELMask.h.

ImageExpr<Bool>* casacore::WCLELMask::itsImageExpr

private

Definition at line 182 of file WCLELMask.h.

Referenced by getImageExpr().

LatticeExpr<Bool>* casacore::WCLELMask::itsLattExpr

private

Definition at line 183 of file WCLELMask.h.

LatticeExprNode* casacore::WCLELMask::itsLattNode

private

Definition at line 184 of file WCLELMask.h.

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

casa/casacore/images/Regions/WCLELMask.h

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Prerequisite

Synopsis

Example

Motivation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation