casacore::WCLELMask Class Reference

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

#include <WCLELMask.h>

Inheritance diagram for casacore::WCLELMask:
casacore::WCRegion

List of all members.

Public Member Functions

 WCLELMask ()
 WCLELMask (const String &command)
 Construct from the given expression command.
 WCLELMask (const char *command)
 WCLELMask (const ImageExpr< Bool > &expr)
 Construct from the given image expression.
 WCLELMask (const LatticeExpr< Bool > &expr)
 Construct from the given lattice expression.
 WCLELMask (const LatticeExprNode &expr)
 Construct from the given lattice expression.
 WCLELMask (const WCLELMask &other)
 Copy constructor (copy semantics).
virtual ~WCLELMask ()
 Destructor.
WCLELMaskoperator= (const WCLELMask &other)
 Assignment (copy semantics).
virtual Bool operator== (const WCRegion &other) const
 Comparison.
virtual WCRegioncloneRegion () const
 Clone a WCLELMask object.
virtual uInt ndim () const
 Get the dimensionality (i.e.
virtual Bool canExtend () const
 WCLELMask cannot extend a region.
virtual LCRegiontoLCRegion (const CoordinateSystem &cSys, const IPosition &latticeShape) const
 Convert to an LCRegion using the given new coordinate system and shape.
virtual LCRegiondoToLCRegion (const CoordinateSystem &cSys, const IPosition &latticeShape, const IPosition &pixelAxesMap, const IPosition &outOrder) const
 Convert to an LCRegion using the supplied CoordinateSystem and shape.
virtual TableRecord toRecord (const String &tableName) const
 Convert the WCLELMask object to a record.
virtual String type () const
 Return region type.
const ImageExpr< Bool > * getImageExpr () const

Static Public Member Functions

static WCLELMaskfromRecord (const TableRecord &rec, const String &tableName)
 Convert to a WCLELMask from a record.
static String className ()
 Returns WCLELMask.

Private Member Functions

void processCommand ()
 Process the command.
void init (const LatticeExprNode &expr)
 Initialize as a LatticeExprNode if expression's shape is unknown.

Private Attributes

String itsCommand
ImageExpr< Bool > * itsImageExpr
LatticeExpr< Bool > * itsLattExpr
LatticeExprNodeitsLattNode

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.

Reimplemented from casacore::WCRegion.

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).

Reimplemented from casacore::WCRegion.

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

Comparison.

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

Definition at line 181 of file WCLELMask.h.

Definition at line 182 of file WCLELMask.h.

Referenced by getImageExpr().

Definition at line 183 of file WCLELMask.h.

Definition at line 184 of file WCLELMask.h.


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