Rebin a masked lattice. More...

#include <RebinLattice.h>

Inheritance diagram for casa::RebinLattice< T >:

Public Member Functions
	RebinLattice ()
	Default constructor (Object is unuseable)
	RebinLattice (const MaskedLattice< T > &lattice, const IPosition &bin)
	Constructor.
	RebinLattice (const RebinLattice< T > &other)
	Copy constructor (reference semantics)
virtual	~RebinLattice ()
	Destructor.
RebinLattice< T > &	operator= (const RebinLattice< T > &other)
	Assignment (reference semantics)
virtual MaskedLattice< T > *	cloneML () const
	Make a copy of the object (reference semantics).
virtual Bool	isMasked () const
	Is the lattice masked? It is if its parent lattice is masked.
virtual Bool	isPaged () const
	Is the lattice paged to disk?
virtual Bool	isWritable () const
	The lattice is not writable.
virtual Bool	lock (FileLocker::LockType, uInt nattempts)
	Handle locking of the lattice which is delegated to its parent.
virtual void	unlock ()
virtual Bool	hasLock (FileLocker::LockType) const
virtual void	resync ()
	Resynchronize the Lattice object with the lattice file.
virtual void	flush ()
	Flush the data.
virtual void	tempClose ()
	Close the Lattice temporarily (if it is paged to disk).
virtual void	reopen ()
	If needed, reopen a temporarily closed Lattice.
virtual const LatticeRegion *	getRegionPtr () const
	Get a pointer the region/mask object.
virtual IPosition	shape () const
	Returns the shape of the lattice.
virtual String	name (Bool stripPath=False) const
	Return the name of the parent lattice.
virtual uInt	advisedMaxPixels () const
	This function returns the recommended maximum number of pixels to include in the cursor of an iterator.
virtual Bool	ok () const
	Check class internals - used for debugging.
virtual Bool	doGetSlice (Array< T > &buffer, const Slicer &section)
	Do the actual getting of an array of values.
virtual void	doPutSlice (const Array< T > &sourceBuffer, const IPosition &where, const IPosition &stride)
	Do the actual putting of an array of values.
virtual Bool	doGetMaskSlice (Array< Bool > &buffer, const Slicer &section)
	Get a section of the mask.
Static Public Member Functions
static IPosition	rebinShape (const IPosition &shapeLatticeIn, const IPosition &bin)
	Static function needed by LEL.
Private Member Functions
Slicer	findOriginalSlicer (const Slicer &section) const
void	getDataAndMask (const Slicer &section)
void	bin (const Array< T > &dataIn)
void	bin (const Array< T > &dataIn, const Array< Bool > &maskIn)
Private Attributes
MaskedLattice< T > *	itsLatticePtr
IPosition	itsBin
Bool	itsAllUnity
Array< T >	itsData
	Cache.
Array< Bool >	itsMask
Slicer	itsSlicer

Detailed Description

template<class T>
class casa::RebinLattice< T >

Rebin a masked lattice.

Intended use:

Internal

Review Status

Test programs:: tRebinLattice

Prerequisite

MaskedLattice

Synopsis

This class enables you to rebin (data are averaged over bin) a MaskedLattice by a given factor per axis

Example

       IPosition shape(2, 10, 20);
       TiledShape tShape(shape);
       TempLattice<Float> latIn(tShape);
       IPosition factors(2, 2, 5);
       RebinLattice<Float> rl(latIn, factors);
       cerr << "Binned data = " << rl.get() << endl;

Motivation

Definition at line 78 of file RebinLattice.h.

Constructor & Destructor Documentation

template<class T>

casa::RebinLattice< T >::RebinLattice ( )

Default constructor (Object is unuseable)

template<class T>

casa::RebinLattice< T >::RebinLattice	(	const MaskedLattice< T > &	lattice,
		const IPosition &	bin
	)

Constructor.

The bins don't have to fit integrally. Whatever is left over at the end is treated as a full bin.

template<class T>

casa::RebinLattice< T >::RebinLattice ( const RebinLattice< T > & other )

Copy constructor (reference semantics)

template<class T>

virtual casa::RebinLattice< T >::~RebinLattice ( ) [virtual]

Destructor.

Member Function Documentation

template<class T>

virtual uInt casa::RebinLattice< T >::advisedMaxPixels ( ) const [virtual]

This function returns the recommended maximum number of pixels to include in the cursor of an iterator.

Reimplemented from casa::Lattice< T >.

template<class T>

void casa::RebinLattice< T >::bin ( const Array< T > & dataIn ) [private]

template<class T>

void casa::RebinLattice< T >::bin	(	const Array< T > &	dataIn,
		const Array< Bool > &	maskIn
	)		`[private]`

template<class T>

virtual MaskedLattice<T>* casa::RebinLattice< T >::cloneML ( ) const [virtual]

Make a copy of the object (reference semantics).

Implements casa::MaskedLattice< T >.

template<class T>

virtual Bool casa::RebinLattice< T >::doGetMaskSlice	(	Array< Bool > &	buffer,
		const Slicer &	section
	)		`[virtual]`

Get a section of the mask.

Slicers with non-unit stride are not yet supported

Reimplemented from casa::MaskedLattice< T >.

template<class T>

virtual Bool casa::RebinLattice< T >::doGetSlice	(	Array< T > &	buffer,
		const Slicer &	section
	)		`[virtual]`

Do the actual getting of an array of values.

Slicers with non-unit stride are not yet supported

Implements casa::Lattice< T >.

template<class T>

virtual void casa::RebinLattice< T >::doPutSlice	(	const Array< T > &	sourceBuffer,
		const IPosition &	where,
		const IPosition &	stride
	)		`[virtual]`

Do the actual putting of an array of values.

The lattice is not writable.

Implements casa::Lattice< T >.

template<class T>

Slicer casa::RebinLattice< T >::findOriginalSlicer ( const Slicer & section ) const [private]

template<class T>

virtual void casa::RebinLattice< T >::flush ( ) [virtual]

Flush the data.

Reimplemented from casa::LatticeBase.

template<class T>

void casa::RebinLattice< T >::getDataAndMask ( const Slicer & section ) [private]

template<class T>

virtual const LatticeRegion* casa::RebinLattice< T >::getRegionPtr ( ) const [virtual]

Get a pointer the region/mask object.

It returns 0.

Implements casa::MaskedLattice< T >.

template<class T>

virtual Bool casa::RebinLattice< T >::hasLock ( FileLocker::LockType ) const [virtual]

Reimplemented from casa::LatticeBase.

template<class T>

virtual Bool casa::RebinLattice< T >::isMasked ( ) const [virtual]

Is the lattice masked? It is if its parent lattice is masked.

Reimplemented from casa::MaskedLattice< T >.

template<class T>

virtual Bool casa::RebinLattice< T >::isPaged ( ) const [virtual]

Is the lattice paged to disk?

Reimplemented from casa::LatticeBase.

template<class T>

virtual Bool casa::RebinLattice< T >::isWritable ( ) const [virtual]

The lattice is not writable.

Reimplemented from casa::LatticeBase.

template<class T>

virtual Bool casa::RebinLattice< T >::lock	(	FileLocker::LockType	,
		uInt	nattempts
	)		`[virtual]`

Handle locking of the lattice which is delegated to its parent.

It is strongly recommended to use class LatticeLocker to handle lattice locking. It also contains a more detailed explanation of the locking process.

Reimplemented from casa::LatticeBase.

template<class T>

virtual String casa::RebinLattice< T >::name ( Bool stripPath = False ) const [virtual]

Return the name of the parent lattice.

Reimplemented from casa::LatticeBase.

template<class T>

virtual Bool casa::RebinLattice< T >::ok ( ) const [virtual]

Check class internals - used for debugging.

Should always return True

Reimplemented from casa::LatticeBase.

template<class T>

RebinLattice<T>& casa::RebinLattice< T >::operator= ( const RebinLattice< T > & other )

Assignment (reference semantics)

template<class T>

static IPosition casa::RebinLattice< T >::rebinShape	(	const IPosition &	shapeLatticeIn,
		const IPosition &	bin
	)		`[static]`

Static function needed by LEL.

Applies binning factors to shape to give the shape of the output lattice. Will give the same result as function 'shape'

template<class T>

virtual void casa::RebinLattice< T >::reopen ( ) [virtual]

If needed, reopen a temporarily closed Lattice.

Reimplemented from casa::LatticeBase.

template<class T>

virtual void casa::RebinLattice< T >::resync ( ) [virtual]

Resynchronize the Lattice object with the lattice file.

This function is only useful if no read-locking is used, ie. if the table lock option is UserNoReadLocking or AutoNoReadLocking. In that cases the table system does not acquire a read-lock, thus does not synchronize itself automatically.

Reimplemented from casa::LatticeBase.

template<class T>

virtual IPosition casa::RebinLattice< T >::shape ( ) const [virtual]

Returns the shape of the lattice.

Implements casa::LatticeBase.

template<class T>

virtual void casa::RebinLattice< T >::tempClose ( ) [virtual]

Close the Lattice temporarily (if it is paged to disk).

It'll be reopened automatically when needed or when reopen is called explicitly.

Reimplemented from casa::LatticeBase.

template<class T>

virtual void casa::RebinLattice< T >::unlock ( ) [virtual]