Support class for the LSQ package. More...

#include <LSQMatrix.h>

Inheritance diagram for casacore::LSQMatrix:

Public Member Functions
Double *	row_pub (uInt i) const
	A set of public interface functions. More...

void	incRow_pub (Double *&row, uInt i) const
	Get next row or previous row pointer in normal equation if the pointer `row` is at row `i`. More...

void	decRow_pub (Double *&row, uInt i) const

Double *	diag_pub (uInt i) const
	Get diagonal element pointer `[i][i]` More...

uInt	nelements_pub () const
	Get length of triangular array. More...

uInt	nrows_pub () const
	Get number of rows. More...

void	doDiagonal_pub (uInt n)
	Make diagonal element 1 if zero (Note that this is always called when `invert()` is called). More...

void	mulDiagonal_pub (uInt n, Double fac)
	Multiply n-length of diagonal with `1+fac` More...

void	addDiagonal_pub (uInt n, Double fac)
	Add `fac` to n-length of diagonal. More...

Double	maxDiagonal_pub (uInt n)
	Determine max of abs values of n-length of diagonal. More...

Public Member Functions inherited from casacore::RecordTransformable
virtual	~RecordTransformable ()
	The destructor must be virtual so that the destructor of derived classes is actually used. More...

virtual Bool	fromString (String &error, const String &inString)
	Initialise the class from a String representation. More...

Private Member Functions
	LSQMatrix ()
	Default constructor (empty, only usable after a `set(n)`) More...

	LSQMatrix (uInt n)
	Construct an object with the number of rows and columns indicated. More...

	LSQMatrix (uInt n, Bool)

	LSQMatrix (const LSQMatrix &other)
	Copy constructor (deep copy) More...

LSQMatrix &	operator= (const LSQMatrix &other)
	Assignment (deep copy) More...

	~LSQMatrix ()

Double &	operator[] (uInt index)
	Index an element in the triangularised matrix. More...

Double	operator[] (uInt index) const

void	reset ()
	Reset all data to zero. More...

void	set (uInt n)
	Set new sizes (default is for Real, a Bool argument will make it complex) More...

void	set (uInt n, Bool)

Double *	row (uInt i) const
	Get row pointer in normal equation (points to element `[i][0]`) More...

void	incRow (Double *&row, uInt i) const
	Get next row or previous row pointer in normal equation if the pointer `row` is at row `i`. More...

void	decRow (Double *&row, uInt i) const

Double *	diag (uInt i) const
	Get diagonal element pointer `[i][i]` More...

uInt	nelements () const
	Get length of triangular array. More...

uInt	nrows () const
	Get number of rows. More...

void	copy (const LSQMatrix &other)
	Copy data. More...

void	init ()
	Initialise matrix. More...

void	clear ()
	Clear matrix. More...

void	deinit ()
	De-initialise matrix. More...

void	doDiagonal (uInt n)
	Make diagonal element 1 if zero (Note that this is always called when `invert()` is called). More...

void	mulDiagonal (uInt n, Double fac)
	Multiply n-length of diagonal with `1+fac` More...

void	addDiagonal (uInt n, Double fac)
	Add `fac` to n-length of diagonal. More...

Double	maxDiagonal (uInt n)
	Determine max of abs values of n-length of diagonal. More...

Bool	fromRecord (String &error, const RecordInterface &in)
	Create a Matrix from a record. More...

Bool	toRecord (String &error, RecordInterface &out) const
	Create a record from an LSQMatrix. More...

const String &	ident () const
	Get identification of record. More...

void	fromAipsIO (AipsIO &in)
	Save or restore using AipsIO. More...

void	toAipsIO (AipsIO &out) const

Static Private Member Functions
static Bool	putCArray (String &error, RecordInterface &out, const String &fname, uInt len, const Double *const in)
	Convert a `carray` to/from a record. More...

static Bool	getCArray (String &error, const RecordInterface &in, const String &fname, uInt len, Double *&out)

static Bool	putCArray (String &error, RecordInterface &out, const String &fname, uInt len, const uInt *const in)

static Bool	getCArray (String &error, const RecordInterface &in, const String &fname, uInt len, uInt *&out)

static void	putCArray (AipsIO &out, uInt len, const Double *const in)

static void	getCArray (AipsIO &in, uInt len, Double *&out)

static void	putCArray (AipsIO &out, uInt len, const uInt *const in)

static void	getCArray (AipsIO &in, uInt len, uInt *&out)

Private Attributes
uInt	n_p
	Matrix size (linear size) More...

uInt	len_p
	Derived sizes (all 0 if n_p equals 0) More...

uInt	nm1_p
	`n-1` More...

Int	n2m1_p
	`2n-1` More...

Int	n2p1_p
	`2n+1` More...

Double *	trian_p
	Matrix (triangular n_p * n_p) More...

Static Private Attributes
static const String	tmatsiz
	Record field names. More...

static const String	tmatdat

Friends
class	LSQFit

Detailed Description

Support class for the LSQ package.

Review Status

Reviewed By:: Wim Brouw
Date Reviewed:: 2004/03/20
Test programs:: tLSQFit

Prerequisite

Some knowledge of Matrix operations

Etymology

From Least SQuares and Matrix

Synopsis

The LSQMatrix class contains the handling of the basic container used in the LSQFit class and its derivatives. This basic container is a triangular matrix.

The basic operations provided are referencing and indexing of cells, rows, columns and diagonal of the triangular matrix. The class is a private structure, with explicit friends.

The class contains a number of public methods (with _pub in name) that can be used anywhere, and which perform index range checking.

The contents can be saved in a record (toRecord), and an object can be created from a record (fromRecord). The record identifier is 'tmat'.

Example

See the LSQFit class for its use.

Motivation

The class was written to isolate the handling of the normal equations used in the LSQ classes.

To Do

Look in possibility of an STL iterator along row, column and diagonal

Definition at line 85 of file LSQMatrix.h.

Constructor & Destructor Documentation

casacore::LSQMatrix::LSQMatrix ( )

private

Default constructor (empty, only usable after a set(n))

casacore::LSQMatrix::LSQMatrix ( uInt n )

explicitprivate

Construct an object with the number of rows and columns indicated.

If a Bool argument is present, the number will be taken as double the number given (assumes complex).

casacore::LSQMatrix::LSQMatrix	(	uInt	n,
		Bool
	)

private

casacore::LSQMatrix::LSQMatrix ( const LSQMatrix & other )

private

Copy constructor (deep copy)

casacore::LSQMatrix::~LSQMatrix ( )

private

Member Function Documentation

void casacore::LSQMatrix::addDiagonal	(	uInt	n,
		Double	fac
	)

private

Add fac to n-length of diagonal.

Referenced by addDiagonal_pub().

void casacore::LSQMatrix::addDiagonal_pub	(	uInt	n,
		Double	fac
	)

inline

Add fac to n-length of diagonal.

Definition at line 113 of file LSQMatrix.h.

References addDiagonal(), and n_p.

void casacore::LSQMatrix::clear ( )

private

Clear matrix.

Referenced by reset().

void casacore::LSQMatrix::copy ( const LSQMatrix & other )

private

Copy data.

void casacore::LSQMatrix::decRow	(	Double *&	row,
		uInt	i
	)		const

inlineprivate

Definition at line 158 of file LSQMatrix.h.

References n_p.

Referenced by decRow_pub().

void casacore::LSQMatrix::decRow_pub	(	Double *&	row,
		uInt	i
	)		const

inline

Definition at line 99 of file LSQMatrix.h.

References decRow().

void casacore::LSQMatrix::deinit ( )

private

De-initialise matrix.

Double* casacore::LSQMatrix::diag ( uInt i ) const

inlineprivate

Get diagonal element pointer [i][i]

Definition at line 161 of file LSQMatrix.h.

References n2p1_p, and trian_p.

Referenced by diag_pub().

Double* casacore::LSQMatrix::diag_pub ( uInt i ) const

inline

Get diagonal element pointer [i][i]

Definition at line 102 of file LSQMatrix.h.

References diag(), and n_p.

void casacore::LSQMatrix::doDiagonal ( uInt n )

private

Make diagonal element 1 if zero (Note that this is always called when invert() is called).

Only n-length sub-matrix is done.

Referenced by doDiagonal_pub().

void casacore::LSQMatrix::doDiagonal_pub ( uInt n )

inline

Make diagonal element 1 if zero (Note that this is always called when invert() is called).

Only n-length sub-matrix is done.

Definition at line 109 of file LSQMatrix.h.

References doDiagonal(), and n_p.

void casacore::LSQMatrix::fromAipsIO ( AipsIO & in )

private

Save or restore using AipsIO.

Bool casacore::LSQMatrix::fromRecord	(	String &	error,
		const RecordInterface &	in
	)

privatevirtual

Create a Matrix from a record.

An error message is generated, and False returned if an invalid record is given. A valid record will return True. Error messages are postfixed to error.

Implements casacore::RecordTransformable.

static Bool casacore::LSQMatrix::getCArray	(	String &	error,
		const RecordInterface &	in,
		const String &	fname,
		uInt	len,
		Double *&	out
	)

staticprivate

static Bool casacore::LSQMatrix::getCArray	(	String &	error,
		const RecordInterface &	in,
		const String &	fname,
		uInt	len,
		uInt *&	out
	)

staticprivate

static void casacore::LSQMatrix::getCArray	(	AipsIO &	in,
		uInt	len,
		Double *&	out
	)

staticprivate

static void casacore::LSQMatrix::getCArray	(	AipsIO &	in,
		uInt	len,
		uInt *&	out
	)

staticprivate

const String& casacore::LSQMatrix::ident ( ) const

privatevirtual

Get identification of record.

Reimplemented from casacore::RecordTransformable.

void casacore::LSQMatrix::incRow	(	Double *&	row,
		uInt	i
	)		const

inlineprivate

Get next row or previous row pointer in normal equation if the pointer row is at row i.

Definition at line 157 of file LSQMatrix.h.

References nm1_p.

Referenced by incRow_pub().

void casacore::LSQMatrix::incRow_pub	(	Double *&	row,
		uInt	i
	)		const

inline

Get next row or previous row pointer in normal equation if the pointer row is at row i.

Definition at line 98 of file LSQMatrix.h.

References incRow(), and n_p.

void casacore::LSQMatrix::init ( )

private

Initialise matrix.

Double casacore::LSQMatrix::maxDiagonal ( uInt n )

private

Determine max of abs values of n-length of diagonal.

Referenced by maxDiagonal_pub().

Double casacore::LSQMatrix::maxDiagonal_pub ( uInt n )

inline

Determine max of abs values of n-length of diagonal.

Definition at line 115 of file LSQMatrix.h.

References maxDiagonal(), and n_p.

void casacore::LSQMatrix::mulDiagonal	(	uInt	n,
		Double	fac
	)

private

Multiply n-length of diagonal with 1+fac

Referenced by mulDiagonal_pub().

void casacore::LSQMatrix::mulDiagonal_pub	(	uInt	n,
		Double	fac
	)

inline

Multiply n-length of diagonal with 1+fac

Definition at line 111 of file LSQMatrix.h.

References mulDiagonal(), and n_p.

uInt casacore::LSQMatrix::nelements ( ) const

inlineprivate

Get length of triangular array.

Definition at line 163 of file LSQMatrix.h.

References len_p.

uInt casacore::LSQMatrix::nelements_pub ( ) const

inline

Get length of triangular array.

Definition at line 104 of file LSQMatrix.h.

References len_p.

uInt casacore::LSQMatrix::nrows ( ) const

inlineprivate

Get number of rows.

Definition at line 165 of file LSQMatrix.h.

References n_p.

uInt casacore::LSQMatrix::nrows_pub ( ) const

inline

Get number of rows.

Definition at line 106 of file LSQMatrix.h.

References n_p.

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

private

Assignment (deep copy)

Double& casacore::LSQMatrix::operator[] ( uInt index )

inlineprivate

Index an element in the triangularised matrix.

Definition at line 140 of file LSQMatrix.h.

References trian_p.

Double casacore::LSQMatrix::operator[] ( uInt index ) const

inlineprivate

Definition at line 141 of file LSQMatrix.h.

References trian_p.

static Bool casacore::LSQMatrix::putCArray	(	String &	error,
		RecordInterface &	out,
		const String &	fname,
		uInt	len,
		const Double *const	in
	)

staticprivate

Convert a carray to/from a record.

Field only written if non-zero length. No carray created if field does not exist on input. False returned if unexpectedly no data available for non-zero length (put), or a field has zero length vector(get).

static Bool casacore::LSQMatrix::putCArray	(	String &	error,
		RecordInterface &	out,
		const String &	fname,
		uInt	len,
		const uInt *const	in
	)

staticprivate

static void casacore::LSQMatrix::putCArray	(	AipsIO &	out,
		uInt	len,
		const Double *const	in
	)

staticprivate

static void casacore::LSQMatrix::putCArray	(	AipsIO &	out,
		uInt	len,
		const uInt *const	in
	)

staticprivate

void casacore::LSQMatrix::reset ( )

inlineprivate

Reset all data to zero.

Definition at line 146 of file LSQMatrix.h.

References clear().

Double* casacore::LSQMatrix::row ( uInt i ) const

inlineprivate

Get row pointer in normal equation (points to element [i][0])

Definition at line 153 of file LSQMatrix.h.

References n2m1_p, and trian_p.

Referenced by row_pub().

Double* casacore::LSQMatrix::row_pub ( uInt i ) const

inline

A set of public interface functions.

Checks for index ranges are made, and zero or null returned if error.

Get row pointer in normal equation (points to element [i][0])

Definition at line 94 of file LSQMatrix.h.

References n_p, and row().

void casacore::LSQMatrix::set ( uInt n )

private

Set new sizes (default is for Real, a Bool argument will make it complex)

void casacore::LSQMatrix::set	(	uInt	n,
		Bool
	)

private

void casacore::LSQMatrix::toAipsIO ( AipsIO & out ) const

private

Bool casacore::LSQMatrix::toRecord	(	String &	error,
		RecordInterface &	out
	)		const

privatevirtual

Create a record from an LSQMatrix.

The return will be False and an error message generated only if the object does not contain a valid Matrix. Error messages are postfixed to error.

Implements casacore::RecordTransformable.

Friends And Related Function Documentation

friend class LSQFit

friend

Definition at line 87 of file LSQMatrix.h.

Member Data Documentation

uInt casacore::LSQMatrix::len_p

private

Derived sizes (all 0 if n_p equals 0)

Total size

Definition at line 228 of file LSQMatrix.h.

Referenced by nelements(), and nelements_pub().

Int casacore::LSQMatrix::n2m1_p

private

2n-1

Definition at line 232 of file LSQMatrix.h.

Referenced by row().

Int casacore::LSQMatrix::n2p1_p

private

2n+1

Definition at line 234 of file LSQMatrix.h.

Referenced by diag().

uInt casacore::LSQMatrix::n_p

private

Matrix size (linear size)

Definition at line 224 of file LSQMatrix.h.

Referenced by addDiagonal_pub(), decRow(), diag_pub(), doDiagonal_pub(), incRow_pub(), maxDiagonal_pub(), mulDiagonal_pub(), nrows(), nrows_pub(), and row_pub().

uInt casacore::LSQMatrix::nm1_p

private

n-1

Definition at line 230 of file LSQMatrix.h.

Referenced by incRow().

const String casacore::LSQMatrix::tmatdat

staticprivate

Definition at line 240 of file LSQMatrix.h.

const String casacore::LSQMatrix::tmatsiz

staticprivate

Record field names.

Definition at line 239 of file LSQMatrix.h.

Double* casacore::LSQMatrix::trian_p

private

Matrix (triangular n_p * n_p)

Definition at line 237 of file LSQMatrix.h.

Referenced by diag(), operator[](), and row().

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

scimath/Fitting/LSQMatrix.h

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Review Status

Prerequisite

Etymology

Synopsis

Example

Motivation

To Do

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation