casa::LELLattCoordBase Class Reference

The base letter class for lattice coordinates in LEL. More...

#include <LELLattCoordBase.h>

Inheritance diagram for casa::LELLattCoordBase:

List of all members.

Public Member Functions
	LELLattCoordBase ()
virtual	~LELLattCoordBase ()
	A virtual destructor is needed so that it will use the actual destructor in the derived class.
virtual Bool	hasCoordinates () const =0
	Does the class have true coordinates?
virtual String	classname () const =0
	The name of the class.
virtual uInt	getSpectralInfo (Vector< Double > &worldCoordinates, const IPosition &shape) const =0
	Get the coordinates of the spectral axis for the given shape.
virtual Int	compare (const LELLattCoordBase &other) const =0
	Check how the coordinates of this and that compare.
virtual Int	doCompare (const LELImageCoord &other) const =0
	Check how the coordinates of this and that image compare.

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Detailed Description

The base letter class for lattice coordinates in LEL.

Intended use:

Internal

Review Status

Reviewed By:

Bob Garwood

Date Reviewed:

2000/01/25

Test programs:

tLatticeExpr

Prerequisite

• Lattice
• LELCoordinates

Synopsis

This abstract base class is the basic letter for the envelope class LELCoordinates . It does not do anything, but makes it possible that derived classes (like LELLattCoord and LELImageCoord ) implement their own behaviour.

Motivation

It must be possible to handle image coordinates in a lattice expression.

Definition at line 77 of file LELLattCoordBase.h.

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Constructor & Destructor Documentation

casa::LELLattCoordBase::LELLattCoordBase

(

)

[inline]

Definition at line 80 of file LELLattCoordBase.h.

virtual casa::LELLattCoordBase::~LELLattCoordBase

(

)

[virtual]

A virtual destructor is needed so that it will use the actual destructor in the derived class.

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Member Function Documentation

virtual String casa::LELLattCoordBase::classname

(

)

const [pure virtual]

The name of the class.

Implemented in casa::LELImageCoord, and casa::LELLattCoord.

virtual Int casa::LELLattCoordBase::compare

(

const LELLattCoordBase &

other

)

const [pure virtual]

Check how the coordinates of this and that compare.

Implemented in casa::LELImageCoord, and casa::LELLattCoord.

virtual Int casa::LELLattCoordBase::doCompare

(

const LELImageCoord &

other

)

const [pure virtual]

Check how the coordinates of this and that image compare.

This function is used by conform to make a double virtual dispatch possible.

Implemented in casa::LELImageCoord, and casa::LELLattCoord.

virtual uInt casa::LELLattCoordBase::getSpectralInfo	(	Vector< Double > &	worldCoordinates,
		const IPosition &	shape
	)		const [pure virtual]

Get the coordinates of the spectral axis for the given shape.

It returns the pixel axis number of the spectral coordinates. -1 indicates that there is no pixel spectral axis. An exception is thrown if there are no world spectral coordinates.

Implemented in casa::LELImageCoord, and casa::LELLattCoord.

virtual Bool casa::LELLattCoordBase::hasCoordinates

(

)

const [pure virtual]

Does the class have true coordinates?

Implemented in casa::LELImageCoord, and casa::LELLattCoord.

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

• casacore/lattices/Lattices/LELLattCoordBase.h