This LEL class handles calculation of the spectral index. More...

#include <LELSpectralIndex.h>

Inheritance diagram for casacore::LELSpectralIndex< T >:

Public Member Functions
	LELSpectralIndex (const Block< LatticeExprNode > &expr)
	Constructor takes operation and expressions to be operated upon. More...

	~LELSpectralIndex ()
	Destructor. More...

virtual void	eval (LELArray< T > &result, const Slicer &section) const
	Recursively evaluate the expression. More...

virtual LELScalar< T >	getScalar () const
	Get the result of a scalar subexpression. More...

virtual Bool	prepareScalarExpr ()
	Do further preparations (e.g. More...

virtual String	className () const
	Get class name. More...

virtual Bool	lock (FileLocker::LockType, uInt nattempts)
	Handle locking/syncing of a lattice in a lattice expression. More...

virtual void	unlock ()

virtual Bool	hasLock (FileLocker::LockType) const

virtual void	resync ()

Public Member Functions inherited from casacore::LELInterface< T >
virtual	~LELInterface ()
	Virtual destructor. More...

virtual void	evalRef (LELArrayRef< T > &result, const Slicer &section) const

LELArray< T >	getArray () const
	Get the result of an array subexpression. More...

Bool	isScalar () const
	Is the result of evaluating this expression a scalar ? More...

const IPosition &	shape () const
	Get the shape of the expression result. More...

const LELAttribute &	getAttribute () const
	Get expression attribute. More...

Private Attributes
Int	itsFreqAxis

Block< Double >	itsLogFreq

LatticeExprNode	arg0_p

LatticeExprNode	arg1_p

Additional Inherited Members
Static Public Member Functions inherited from casacore::LELInterface< T >
static Bool	replaceScalarExpr (CountedPtr< LELInterface< T > > &expr)
	If the given expression is a valid scalar, replace it by its result. More...

Protected Member Functions inherited from casacore::LELInterface< T >
void	setAttr (const LELAttribute &attrib)
	Set the expression attributes of this object. More...

Detailed Description

template<class T>
class casacore::LELSpectralIndex< T >

This LEL class handles calculation of the spectral index.

Intended use:

Internal

Review Status

Date Reviewed:: yyyy/mm/dd

Prerequisite

Synopsis

This LEL letter class is derived from LELInterface. It is used to construct LEL objects that calculate the sepectral index from 2 other LEL expression (usually images). It operates on real types (Float,Double)

Motivation

This is a separate class (instead of being part of a LELFunction class), because the calculation of the spectral index requires extra variables (the frequencies) and some more complicated code.

Definition at line 72 of file LELSpectralIndex.h.