Make the extension of an image region. More...

#include <WCExtension.h>

Inheritance diagram for casacore::WCExtension:

Public Member Functions
	WCExtension (const ImageRegion &region, const WCBox &extendBox)
	Construct the extension of an image region using the axes and blc,trc given in the extendBox. More...

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

virtual	~WCExtension ()

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

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

virtual WCRegion *	cloneRegion () const
	Make a copy of the derived object. More...

virtual String	type () const
	Get the region type. More...

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

Public Member Functions inherited from casacore::WCCompound
	WCCompound (const ImageRegion &region1, const ImageRegion &region2)
	Construct from one or more image regions. More...

	WCCompound (const ImageRegion region1, const ImageRegion region2=0, const ImageRegion region3=0, const ImageRegion region4=0, const ImageRegion region5=0, const ImageRegion region6=0, const ImageRegion region7=0, const ImageRegion region8=0, const ImageRegion region9=0, const ImageRegion region10=0)

	WCCompound (const PtrBlock< const ImageRegion * > &regions)

	WCCompound (Bool takeOver, const PtrBlock< const WCRegion * > &regions)
	Construct from multiple regions given as a Block. More...

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

virtual	~WCCompound ()

const PtrBlock< const WCRegion * > &	regions () const
	Get the contributing regions. More...

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

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

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)

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

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 String	className ()
	Get the class name (to store in the record). More...

static WCExtension *	fromRecord (const TableRecord &, const String &tableName)
	Convert correct object from a record. 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...

Protected Member Functions
virtual Bool	canExtend () const
	WCExtension can extend a region if WCBox can do so. More...

virtual LCRegion *	doToLCRegion (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...

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

void	multiToLCRegion (PtrBlock< const LCRegion * > &regions, const CoordinateSystem &cSys, const IPosition &shape, const IPosition &pixelAxesMap, const IPosition &extendAxes) const
	Convert each WCRegion to an LCRegion. More...

TableRecord	makeRecord (const String &tableName) const
	Store the contributing regions in a record. More...

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

Private Member Functions
	WCExtension (Bool takeOver, const PtrBlock< const WCRegion * > &regions)
	Construct from multiple regions given as a Block. More...

void	findAxes (IPosition &extendBoxAxes, IPosition &stretchBoxAxes, IPosition &stretchRegionAxes) const
	Find the axes to be extended and stretched. More...

Additional Inherited Members
Static Protected Member Functions inherited from casacore::WCCompound
static void	unmakeRecord (PtrBlock< const WCRegion * > &, const TableRecord &, const String &tableName)
	Retrieve the contributing objects from the record. More...

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

Make the extension of an image region.

Intended use:

Public interface

Prerequisite

WCCompound

Synopsis

The WCExtension class is a specialization of class WCCompound. It makes it possible to extend a region along straight lines to other dimensions. It is also possible to extend existing axes with length 1, i.e. to stretch such axes. E.g. a circle in the RA,DEC plane can be extended to a cylinder in a RA,DEC,FREQ cube. It is possible to extend over more than one dimension. One can also limit the extension range E.g. in the forementioned example the circle can be extended for a given range of frequencies only.
The extension axes and ranges have to be given as a WCBox object. The axes which are part of the box and the region are the axes to be stretched. Box axes which are not part of the region are the extension axes.

Note that regions get automatically extended when a region is used for a higher dimensioned image. The extension is done for all unknown axes (for their entire length).

Example

Definition at line 86 of file WCExtension.h.

Constructor & Destructor Documentation

casacore::WCExtension::WCExtension	(	const ImageRegion &	region,
		const WCBox &	extendBox
	)

Construct the extension of an image region using the axes and blc,trc given in the extendBox.

The axes in region and box have to be disjoint.

casacore::WCExtension::WCExtension ( const WCExtension & other )

Copy constructor (copy semantics).

virtual casacore::WCExtension::~WCExtension ( )

virtual

casacore::WCExtension::WCExtension	(	Bool	takeOver,
		const PtrBlock< const WCRegion * > &	regions
	)

private

Construct from multiple regions given as a Block.

When takeOver is True, the destructor will delete the given regions. Otherwise a copy of the regions is made.

Member Function Documentation

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

protectedvirtual

WCExtension can extend a region if WCBox can do so.

Reimplemented from casacore::WCRegion.

static String casacore::WCExtension::className ( )

static

Get the class name (to store in the record).

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

virtual

Make a copy of the derived object.

Implements casacore::WCRegion.

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

protectedvirtual

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

pixelAxesMap(i) gives the pixel axis in cSys of axes i in the axesDesc.

Implements casacore::WCRegion.

void casacore::WCExtension::findAxes	(	IPosition &	extendBoxAxes,
		IPosition &	stretchBoxAxes,
		IPosition &	stretchRegionAxes
	)		const

private

Find the axes to be extended and stretched.

The extend axes are the axis numbers in the box. For the stretch axes both box and region axes are returned.

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

static

Convert correct object from a record.

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

Assignment (copy semantics).

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

virtual

Comparison.

Reimplemented from casacore::WCCompound.

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

virtual

Convert the (derived) object to a record.

Implements casacore::WCRegion.

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

virtual

Get the region type.

Returns className()

Implements casacore::WCRegion.

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

casa/casacore/images/Regions/WCExtension.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Intended use:

Prerequisite

Synopsis

Example

Constructor & Destructor Documentation

Member Function Documentation