casacore::MArrayBase Class Reference

Base class for an array with an optional mask. More...

#include <MArrayBase.h>

Inheritance diagram for casacore::MArrayBase:

Public Member Functions
Bool	isNull () const
	Is the array null? More...
void	removeMask ()
	Remove the mask. More...
Bool	hasMask () const
	Is there a mask? More...
void	setMask (const Array< Bool > &mask)
	Set the mask. More...
const Array< Bool > &	mask () const
	Get the mask. More...
Array< Bool > &	wmask ()
Int64	nvalid () const
	Return the number of valid array values, thus unflagged elements. More...
Bool	empty () const
	Is the array empty? More...
uInt	ndim () const
	Get the dimensionality. More...
const IPosition &	shape () const
	Get the shape. More...
size_t	size () const
	Get the size. More...
size_t	nelements () const
Array< Bool >	combineMask (const MArrayBase &other) const
	Combine this and the other mask. More...

Protected Member Functions
	MArrayBase (Bool isNull)
	The default constructor creates an empty mask. More...
	MArrayBase (const ArrayBase &arr, const Array< Bool > &mask, Bool isNull)
	Construct from a given array shape and mask. More...
	MArrayBase (const ArrayBase &arr, const MArrayBase &marray)
	Construct from a given array shape and mask from another MArray. More...
void	setBase (const ArrayBase &arr, const Array< Bool > &mask)
	Reference the mask and set the shape. More...
void	referenceBase (const MArrayBase &other)
	Reference another MArray. More...
void	resizeBase (const ArrayBase &arr, Bool useMask)
	Set the array shape and resize the mask. More...

Private Member Functions
void	init ()
	Initialize and check. More...
void	fillNValid () const
	Fill the number of valid values. More...

Private Attributes
Array< Bool >	itsMask
IPosition	itsShape
size_t	itsSize
Int64	itsNValid
Bool	itsNull

Detailed Description

Base class for an array with an optional mask.

Intended use:

Internal

Review Status

Reviewed By:

UNKNOWN

Date Reviewed:

before2004/08/25

Prerequisite

• Array

Synopsis

This class is the base class of the templated class MArray. It contains the functions that are not template dependent.

MArray is developed to make it easier to handle arrays with an optional mask. The array is always present, but the mask is optional. MArrayMath contains functions to operate on such arrays.

Similar to numpy.masked_array and the MeasurementSet FLAG definition, a mask value True means that the corresponding value is masked off, thus is not taken into account in reduction functions like sum. on a masked array. In operations like addition, masked off values are processed because testing the mask value is more expensive than an addition (even if the value is a NaN). For an operation with multiple operands, the mask of the result is the OR of the operand masks.

MArray can be null meaning that the array is a null value. It can be used to indicate that a table cell does not contain an array. A null MArray has an empty array and mask. Operations where an operand is a null MArray, result in a null MArray.

Definition at line 84 of file MArrayBase.h.

Constructor & Destructor Documentation

casacore::MArrayBase::MArrayBase ( Bool  isNull )

inlineexplicitprotected

The default constructor creates an empty mask.

Definition at line 88 of file MArrayBase.h.

casacore::MArrayBase::MArrayBase ( const ArrayBase &  arr, const Array< Bool > &  mask, Bool  isNull  )

protected

Construct from a given array shape and mask.

casacore::MArrayBase::MArrayBase ( const ArrayBase &  arr, const MArrayBase &  marray  )

protected

Construct from a given array shape and mask from another MArray.

Member Function Documentation

Array<Bool> casacore::MArrayBase::combineMask

(

const MArrayBase &

other

)

const

Combine this and the other mask.

One or both MArray-s can be unmasked.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::atan2(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::floormod(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::fmod(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::max(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::min(), casacore::MArrayLogical_global_functions_MArray_logical_operations::near(), casacore::MArrayLogical_global_functions_MArray_logical_operations::nearAbs(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator!=(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator%(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator&(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator&&(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator*(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator+(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator-(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator/(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator==(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator>(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator>=(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator^(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator|(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator||(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::pow().

Bool casacore::MArrayBase::empty ( ) const

inline

Is the array empty?

Definition at line 139 of file MArrayBase.h.

References itsSize.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::fractile(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::median().

void casacore::MArrayBase::fillNValid ( ) const

private

Fill the number of valid values.

Referenced by nvalid().

Bool casacore::MArrayBase::hasMask ( ) const

inline

Is there a mask?

Definition at line 119 of file MArrayBase.h.

References casacore::ArrayBase::empty(), and itsMask.

Referenced by casacore::MArrayLogical_global_functions_MArray_logical_operations::allEQ(), casacore::MArrayLogical_global_functions_MArray_logical_operations::anyEQ(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::avdev(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedVariances(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::fractile(), casacore::TableExprGroupAggr::getArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::max(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::mean(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::median(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::min(), casacore::MArrayLogical_global_functions_MArray_logical_operations::nfalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::ntrue(), casacore::MArray< casacore::String >::operator()(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialVariances(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::product(), casacore::MArrayUtil_global_functions_reorderMArray::reorderArray(), casacore::MArrayUtil_global_functions_reverseMArray::reverseArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::rms(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingVariances(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::sum(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::sumsqr(), casacore::TableExprNodeSet::toArray(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::variance().

void casacore::MArrayBase::init ( )

private

Initialize and check.

Bool casacore::MArrayBase::isNull ( ) const

inline

Is the array null?

Definition at line 111 of file MArrayBase.h.

References itsNull.

Referenced by casacore::MArrayLogical_global_functions_MArray_logical_operations::allEQ(), casacore::MArrayLogical_global_functions_MArray_logical_operations::anyEQ(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::atan2(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::boxedNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedVariances(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::floormod(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::fmod(), casacore::TableExprGroupAggr::getArray(), casacore::MArray< casacore::String >::MArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::max(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::min(), casacore::MArrayLogical_global_functions_MArray_logical_operations::near(), casacore::MArrayLogical_global_functions_MArray_logical_operations::nearAbs(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator!=(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator%(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator&(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator&&(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator*(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator+(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator-(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator/(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator==(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator>(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator>=(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator^(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::operator|(), casacore::MArrayLogical_global_functions_MArray_logical_operations::operator||(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::partialNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialVariances(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::pow(), casacore::MArrayUtil_global_functions_reorderMArray::reorderArray(), casacore::MArrayUtil_global_functions_reverseMArray::reverseArray(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingAlls(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingAnys(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingAvdevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingFractiles(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMaxs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMeans(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMedians(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingMins(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingNFalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::slidingNTrue(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingProducts(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingRmss(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingStddevs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingSums(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingSumSqrs(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingVariances(), and casacore::TableExprNodeSet::toArray().

const Array<Bool>& casacore::MArrayBase::mask ( ) const

inline

Get the mask.

The returned array is empty if there is no mask.

Definition at line 126 of file MArrayBase.h.

References itsMask.

Referenced by casacore::MArrayLogical_global_functions_MArray_logical_operations::allEQ(), casacore::MArrayLogical_global_functions_MArray_logical_operations::anyEQ(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::avdev(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedArrayMath(), casacore::TableExprGroupAggr::getArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::max(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::min(), casacore::MArrayLogical_global_functions_MArray_logical_operations::nfalse(), casacore::MArrayLogical_global_functions_MArray_logical_operations::ntrue(), casacore::MArray< casacore::String >::operator()(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::product(), casacore::MArrayUtil_global_functions_reorderMArray::reorderArray(), casacore::MArrayUtil_global_functions_reverseMArray::reverseArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::rms(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::sum(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::sumsqr(), casacore::TableExprNodeSet::toArray(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::variance().

uInt casacore::MArrayBase::ndim ( ) const

inline

Get the dimensionality.

Definition at line 143 of file MArrayBase.h.

References itsShape, and casacore::IPosition::size().

Referenced by casacore::TableExprGroupAggr::getArray().

size_t casacore::MArrayBase::nelements ( ) const

inline

Definition at line 154 of file MArrayBase.h.

References itsSize.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::median(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::medianInPlace().

Int64 casacore::MArrayBase::nvalid ( ) const

inline

Return the number of valid array values, thus unflagged elements.

Definition at line 132 of file MArrayBase.h.

References fillNValid(), and itsNValid.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::avdev(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::mean(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::rms(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::variance().

void casacore::MArrayBase::referenceBase ( const MArrayBase &  other )

protected

Reference another MArray.

Referenced by casacore::MArray< casacore::String >::reference().

void casacore::MArrayBase::removeMask ( )

inline

Remove the mask.

Definition at line 115 of file MArrayBase.h.

References itsMask, itsNValid, itsSize, and casacore::Array< T, Alloc >::resize().

void casacore::MArrayBase::resizeBase ( const ArrayBase &  arr, Bool  useMask  )

protected

Set the array shape and resize the mask.

Referenced by casacore::MArray< casacore::String >::fill(), casacore::MArray< casacore::String >::MArray(), and casacore::MArray< casacore::String >::resize().

void casacore::MArrayBase::setBase ( const ArrayBase &  arr, const Array< Bool > &  mask  )

protected

Reference the mask and set the shape.

Referenced by casacore::MArray< casacore::String >::fill(), and casacore::MArray< casacore::String >::MArray().

void casacore::MArrayBase::setMask

(

const Array< Bool > &

mask

)

Set the mask.

It checks if it matches the array shape.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedArrayMath(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::partialArrayMath(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingArrayMath().

const IPosition& casacore::MArrayBase::shape ( ) const

inline

Get the shape.

Definition at line 147 of file MArrayBase.h.

References itsShape.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::boxedArrayMath(), casacore::TableExprGroupAggr::getArray(), casacore::MArrayMath_global_functions_MArray_mathematical_operations::slidingArrayMath(), and casacore::TableExprNodeSet::toArray().

size_t casacore::MArrayBase::size ( ) const

inline

Get the size.

Definition at line 152 of file MArrayBase.h.

References itsSize.

Referenced by casacore::MArrayMath_global_functions_MArray_mathematical_operations::fractile(), and casacore::MArrayMath_global_functions_MArray_mathematical_operations::median().

Array<Bool>& casacore::MArrayBase::wmask ( )

inline

Definition at line 128 of file MArrayBase.h.

References itsMask.

Member Data Documentation

Array<Bool> casacore::MArrayBase::itsMask

private

Definition at line 170 of file MArrayBase.h.

Referenced by hasMask(), mask(), removeMask(), and wmask().

Bool casacore::MArrayBase::itsNull

private

Definition at line 174 of file MArrayBase.h.

Referenced by isNull().

Int64 casacore::MArrayBase::itsNValid

mutableprivate

Definition at line 173 of file MArrayBase.h.

Referenced by nvalid(), and removeMask().

IPosition casacore::MArrayBase::itsShape

private

Definition at line 171 of file MArrayBase.h.

Referenced by ndim(), and shape().

size_t casacore::MArrayBase::itsSize

private

Definition at line 172 of file MArrayBase.h.

Referenced by empty(), nelements(), removeMask(), and size().

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

• tables/TaQL/MArrayBase.h