casacore::MVBaseline Class Reference

More...

#include <MVBaseline.h>

Public Member Functions
	MVBaseline ()
	Default constructor generates a (0,0,0) Baseline. More...
	MVBaseline (const MVPosition &other)
	Creates from an MVPosition. More...
	MVBaseline (Double in0, Double in1, Double in2)
	Creates a specified vector. More...
	MVBaseline (Double in0)
	Creates a vector with specified length towards pole. More...
	MVBaseline (const Quantity &l)
	MVBaseline (const Quantity &l, Double angle0, Double angle1)
	Creates the Baseline from specified (azimuth,elevation) angles and length. More...
	MVBaseline (const Quantity &l, const Quantity &angle0, const Quantity &angle1)
	Creates the Baseline from specified angles and length. More...
	MVBaseline (const Quantum< Vector< Double > > &angle)
	If not enough angles: pole assumed (if none), or elevation =0 (if 1) More...
	MVBaseline (const Quantity &l, const Quantum< Vector< Double > > &angle)
	MVBaseline (const Vector< Double > &other)
	Create from specified length and/or angles and/or Baseline. More...
	MVBaseline (const Vector< Quantity > &other)
	MVBaseline (const MVPosition &pos, const MVPosition &base)
	Baseline as difference between positions (first - second (default(0,0,0)) More...
Double	operator* (const MVBaseline &other) const
	Multiplication defined as in-product. More...
Bool	operator== (const MVBaseline &other) const
	Equality comparisons. More...
Bool	operator!= (const MVBaseline &other) const
Bool	near (const MVBaseline &other, Double tol=1e-13) const
Bool	near (const MVBaseline &other, Quantity tol) const
Bool	nearAbs (const MVBaseline &other, Double tol=1e-13) const
MVBaseline	operator- () const
	Addition and subtraction. More...
MVBaseline &	operator+= (const MVBaseline &right)
MVBaseline	operator+ (const MVBaseline &right) const
MVBaseline &	operator-= (const MVBaseline &right)
MVBaseline	operator- (const MVBaseline &right) const
virtual void	adjust ()
	Normalise direction aspects by adjusting the length to 1. More...
virtual void	adjust (Double &res)
	Adjustment with returned factor. More...
virtual void	readjust (Double res)
	Re-adjust using factor given. More...
virtual Double	radius ()
	Get radius of Baseline. More...
Vector< Double >	get () const
	Generate a 3-vector of coordinates (length(m), angles(rad)) More...
const Vector< Double > &	getValue () const
	Generate a 3-vector of x,y,z in m. More...
Quantum< Vector< Double > >	getAngle () const
	Generate angle 2-vector (in rad) More...
Quantum< Vector< Double > >	getAngle (const Unit &unit) const
	and with specified units More...
Quantity	getLength () const
	Generate the length. More...
Quantity	getLength (const Unit &unit) const
	and generate it with the specified units More...
Double	BaselineAngle (const MVBaseline &other) const
	Get the Baseline angle between the directions. More...
Quantity	BaselineAngle (const MVBaseline &other, const Unit &unit) const
Double	separation (const MVBaseline &other) const
	Get the angular separation between two directions. More...
Quantity	separation (const MVBaseline &other, const Unit &unit) const
MVBaseline	crossProduct (const MVBaseline &other) const
	Produce the cross product. More...
virtual void	print (ostream &os) const
	Print data. More...
virtual MeasValue *	clone () const
	Clone. More...
virtual Vector< Double >	getVector () const
	Get the value in internal units. More...
virtual void	putVector (const Vector< Double > &in)
	Set the value from internal units (set 0 for empty vector) More...
virtual Vector< Quantum< Double > >	getRecordValue () const
	Get the internal value as a Vector<Quantity>. More...
virtual Vector< Quantum< Double > >	getXRecordValue () const
virtual Vector< Quantum< Double > >	getTMRecordValue () const
virtual Bool	putValue (const Vector< Quantum< Double > > &in)
	Set the internal value if correct values and dimensions. More...
Public Member Functions inherited from casacore::MVPosition
	MVPosition ()
	Default constructor generates a (0,0,0) position. More...
	MVPosition (const MVPosition &other)
	Copy constructor. More...
	MVPosition (Double in0, Double in1, Double in2)
	Creates a specified vector. More...
	MVPosition (Double in0)
	Creates a vector with specified length towards pole. More...
	MVPosition (const Quantity &l)
	MVPosition (const Quantity &l, Double angle0, Double angle1)
	Creates the position from specified (azimuth,elevation) angles and length. More...
	MVPosition (const Quantity &l, const Quantity &angle0, const Quantity &angle1)
	Creates the position from specified angles and length. More...
	MVPosition (const Quantum< Vector< Double > > &angle)
	If not enough angles: pole assumed (if none), or elevation =0 (if 1) More...
	MVPosition (const Quantity &l, const Quantum< Vector< Double > > &angle)
	MVPosition (const Vector< Double > &other)
	Create from specified length and/or angles and/or position. More...
	MVPosition (const Vector< Quantity > &other)
MVPosition &	operator= (const MVPosition &other)
	Copy assignment. More...
virtual	~MVPosition ()
	Destructor. More...
Double	operator* (const MVPosition &other) const
	Multiplication defined as in-product. More...
Bool	operator== (const MVPosition &other) const
	Equality comparisons. More...
Bool	operator!= (const MVPosition &other) const
Bool	near (const MVPosition &other, Double tol=1e-13) const
Bool	near (const MVPosition &other, Quantity tol) const
Bool	nearAbs (const MVPosition &other, Double tol=1e-13) const
MVPosition	operator- () const
	Addition and subtraction. More...
MVPosition &	operator+= (const MVPosition &right)
MVPosition	operator+ (const MVPosition &right) const
MVPosition &	operator-= (const MVPosition &right)
MVPosition	operator- (const MVPosition &right) const
MVPosition &	operator*= (const RotMatrix &right)
	Multiplication with rotation matrix (see also global functions) More...
MVPosition &	operator*= (Double right)
	Multiplication with constant. More...
Double &	operator() (uInt which)
	Obtain an element. More...
const Double &	operator() (uInt which) const
Vector< Double >	get () const
	Generate a 3-vector of coordinates (length(m), angles(rad)) More...
const Vector< Double > &	getValue () const
	Generate a 3-vector of x,y,z in m. More...
Quantum< Vector< Double > >	getAngle () const
	Generate angle 2-vector (in rad) More...
Quantum< Vector< Double > >	getAngle (const Unit &unit) const
	and with specified units More...
Double	getLong () const
	Get the longitudinal angle (in radians) More...
Quantity	getLong (const Unit &unit) const
	and with specified units More...
Double	getLat () const
	Get the latitude angle (rad) More...
Quantity	getLat (const Unit &unit) const
	and with specified units More...
Quantity	getLength () const
	Generate the length. More...
Quantity	getLength (const Unit &unit) const
	and generate it with the specified units More...
Double	positionAngle (const MVPosition &other) const
	Get the position angle between the directions. More...
Quantity	positionAngle (const MVPosition &other, const Unit &unit) const
Double	separation (const MVPosition &other) const
	Get the angular separation between two directions. More...
Quantity	separation (const MVPosition &other, const Unit &unit) const
MVPosition	crossProduct (const MVPosition &other) const
	Produce the cross product. More...
Public Member Functions inherited from casacore::MeasValue
void	dummy_constr () const
	Each derived class should have at least the following constructors: More...
virtual	~MeasValue ()
	Destructor. More...
void	dummy_operator () const
	The following operators should be present at least. More...

Static Public Member Functions
static void	assure (const MeasValue &in)
	Tell me your type. More...
Static Public Member Functions inherited from casacore::MVPosition
static void	assure (const MeasValue &in)
	Tell me your type. More...

Additional Inherited Members
Static Public Attributes inherited from casacore::MVPosition
static const Double	loLimit
	Internal limts codes for negative height. More...
static const Double	hiLimit
Protected Member Functions inherited from casacore::MVPosition
Double	getLat (Double ln) const
	Get the latitude assuming length is given. More...
Protected Attributes inherited from casacore::MVPosition
Vector< Double >	xyz
	Position vector (in m) More...

Detailed Description

A 3D vector on Earth

Intended use:

Public interface

Review Status

Reviewed By:

UNKNOWN

Date Reviewed:

before2004/08/25

Test programs:

tMBaseline

Prerequisite

• MeasValue

Etymology

From Measure, Value and Baseline

Synopsis

A MVBaseline is a 3-vector of Baselines in a rectangular frame with internal units of m.
It can be constructed with:

• MVBaseline() creates point at origin (0,0,0)
• MVBaseline(MVBaseline) creates a copy
• MVBaseline(MVPosition) creates (x,y,z) from the given position
• MVBaseline(Double, Double, Double) creates (x,y,z) with specified values (assuming meters)
• MVBaseline(Quantity length,Double, Double) creates a MVBaseline assuming that the two values are (in radians) angle along 'equator' and towards 'pole'.
• MVBaseline(Quantity length, Quantity, Quantity) creates a MVBaseline assuming angles as in previous, or Baselines
• MVBaseline(Quantity, Quantum<Vector<Double> >) creates a MVBaseline from angle vector, using first two angles, and assuming second as zero if not present.
• MVBaseline(Quantum<Vector<Double> > creates from angles or Baselines, depending on the units in the quantum vector. In the angle case, the data derived can be scaled with the readjust() function. If the unit of the quantum vector is length, Baseline is assumed.
• MVBaseline(Vector<Double> creates from angles (less than or equal to two elements) or x,y,z (3 elements).
• MVBaseline(Vector<Quantity> creates from length+angles, angles, or x,y,z, depending on units.
• MVBaseline(MVPosition, MVPosition) creates a baseline pointing from second to first MVPosition
• MVBaseline(MVPosition) creates a baseline as defined by the position given (e.g. as derived from an offset MPosition)

A void adjust(Double) function normalises the vector to a length of 1; a get() returns as a Double 3-vector the length and angles of the Baseline vector; a getAngle() returns a Quantum 2-vector, (uInt) returns the indicated element, and getValue returns the vector.
Baselines can be added and subtracted.
The multiplication of two Baselines produces the in-product.

Example

See MBaseline class.

Motivation

To do coordinate transformations

To Do

• Nothing I know of

Definition at line 108 of file MVBaseline.h.

Constructor & Destructor Documentation

MVBaseline() [1/12]

casacore::MVBaseline::MVBaseline

(

)

Default constructor generates a (0,0,0) Baseline.

MVBaseline() [2/12]

casacore::MVBaseline::MVBaseline

(

const MVPosition &

other

)

Creates from an MVPosition.

MVBaseline() [3/12]

casacore::MVBaseline::MVBaseline	(	Double	in0,
		Double	in1,
		Double	in2
	)

Creates a specified vector.

MVBaseline() [4/12]

casacore::MVBaseline::MVBaseline ( Double  in0 )

explicit

Creates a vector with specified length towards pole.

MVBaseline() [5/12]

casacore::MVBaseline::MVBaseline

(

const Quantity &

l

)

MVBaseline() [6/12]

casacore::MVBaseline::MVBaseline	(	const Quantity &	l,
		Double	angle0,
		Double	angle1
	)

Creates the Baseline from specified (azimuth,elevation) angles and length.

MVBaseline() [7/12]

casacore::MVBaseline::MVBaseline	(	const Quantity &	l,
		const Quantity &	angle0,
		const Quantity &	angle1
	)

Creates the Baseline from specified angles and length.

or Baselines

Thrown Exceptions

• AipsError if quantities not in angle format

MVBaseline() [8/12]

casacore::MVBaseline::MVBaseline

(

const Quantum< Vector< Double > > &

angle

)

If not enough angles: pole assumed (if none), or elevation =0 (if 1)

MVBaseline() [9/12]

casacore::MVBaseline::MVBaseline	(	const Quantity &	l,
		const Quantum< Vector< Double > > &	angle
	)

MVBaseline() [10/12]

casacore::MVBaseline::MVBaseline

(

const Vector< Double > &

other

)

Create from specified length and/or angles and/or Baseline.

MVBaseline() [11/12]

casacore::MVBaseline::MVBaseline

(

const Vector< Quantity > &

other

)

MVBaseline() [12/12]

casacore::MVBaseline::MVBaseline	(	const MVPosition &	pos,
		const MVPosition &	base
	)

Baseline as difference between positions (first - second (default(0,0,0))

Member Function Documentation

adjust() [1/2]

virtual void casacore::MVBaseline::adjust ( )

virtual

Normalise direction aspects by adjusting the length to 1.

Reimplemented from casacore::MVPosition.

adjust() [2/2]

virtual void casacore::MVBaseline::adjust ( Double &  res )

virtual

Adjustment with returned factor.

Reimplemented from casacore::MVPosition.

assure()

static void casacore::MVBaseline::assure ( const MeasValue &  in )

static

Tell me your type.

BaselineAngle() [1/2]

Double casacore::MVBaseline::BaselineAngle

(

const MVBaseline &

other

)

const

Get the Baseline angle between the directions.

I.e. the angle between the direction from one to the pole, and from one to the other.

BaselineAngle() [2/2]

Quantity casacore::MVBaseline::BaselineAngle	(	const MVBaseline &	other,
		const Unit &	unit
	)		const

clone()

virtual MeasValue* casacore::MVBaseline::clone ( ) const

virtual

Clone.

Reimplemented from casacore::MVPosition.

crossProduct()

MVBaseline casacore::MVBaseline::crossProduct

(

const MVBaseline &

other

)

const

Produce the cross product.

get()

Vector<Double> casacore::MVBaseline::get

(

)

const

Generate a 3-vector of coordinates (length(m), angles(rad))

getAngle() [1/2]

Quantum<Vector<Double> > casacore::MVBaseline::getAngle

(

)

const

Generate angle 2-vector (in rad)

getAngle() [2/2]

Quantum<Vector<Double> > casacore::MVBaseline::getAngle

(

const Unit &

unit

)

const

and with specified units

getLength() [1/2]

Quantity casacore::MVBaseline::getLength

(

)

const

Generate the length.

getLength() [2/2]

Quantity casacore::MVBaseline::getLength

(

const Unit &

unit

)

const

and generate it with the specified units

getRecordValue()

virtual Vector<Quantum<Double> > casacore::MVBaseline::getRecordValue ( ) const

virtual

Get the internal value as a Vector<Quantity>.

Usable in records. The getXRecordValue() gets additional information for records. Note that the Vectors could be empty.

Reimplemented from casacore::MVPosition.

getTMRecordValue()

virtual Vector<Quantum<Double> > casacore::MVBaseline::getTMRecordValue ( ) const

inlinevirtual

Reimplemented from casacore::MVPosition.

Definition at line 231 of file MVBaseline.h.

References getXRecordValue().

getValue()

const Vector<Double>& casacore::MVBaseline::getValue

(

)

const

Generate a 3-vector of x,y,z in m.

getVector()

virtual Vector<Double> casacore::MVBaseline::getVector ( ) const

virtual

Get the value in internal units.

Reimplemented from casacore::MVPosition.

getXRecordValue()

virtual Vector<Quantum<Double> > casacore::MVBaseline::getXRecordValue ( ) const

virtual

Reimplemented from casacore::MVPosition.

Referenced by getTMRecordValue().

near() [1/2]

Bool casacore::MVBaseline::near	(	const MVBaseline &	other,
		Double	tol = 1e-13
	)		const

near() [2/2]

Bool casacore::MVBaseline::near	(	const MVBaseline &	other,
		Quantity	tol
	)		const

nearAbs()

Bool casacore::MVBaseline::nearAbs	(	const MVBaseline &	other,
		Double	tol = 1e-13
	)		const

operator!=()

Bool casacore::MVBaseline::operator!=

(

const MVBaseline &

other

)

const

operator*()

Double casacore::MVBaseline::operator*

(

const MVBaseline &

other

)

const

Multiplication defined as in-product.

operator+()

MVBaseline casacore::MVBaseline::operator+

(

const MVBaseline &

right

)

const

operator+=()

MVBaseline& casacore::MVBaseline::operator+=

(

const MVBaseline &

right

)

operator-() [1/2]

MVBaseline casacore::MVBaseline::operator-

(

)

const

Addition and subtraction.

operator-() [2/2]

MVBaseline casacore::MVBaseline::operator-

(

const MVBaseline &

right

)

const

operator-=()

MVBaseline& casacore::MVBaseline::operator-=

(

const MVBaseline &

right

)

operator==()

Bool casacore::MVBaseline::operator==

(

const MVBaseline &

other

)

const

Equality comparisons.

print()

virtual void casacore::MVBaseline::print ( ostream &  os ) const

virtual

Print data.

Reimplemented from casacore::MVPosition.

putValue()

virtual Bool casacore::MVBaseline::putValue ( const Vector< Quantum< Double > > &  in )

virtual

Set the internal value if correct values and dimensions.

Reimplemented from casacore::MVPosition.

putVector()

virtual void casacore::MVBaseline::putVector ( const Vector< Double > &  in )

virtual

Set the value from internal units (set 0 for empty vector)

Reimplemented from casacore::MVPosition.

radius()

virtual Double casacore::MVBaseline::radius ( )

virtual

Get radius of Baseline.

Reimplemented from casacore::MVPosition.

readjust()

virtual void casacore::MVBaseline::readjust ( Double  res )

virtual

Re-adjust using factor given.

Reimplemented from casacore::MVPosition.

separation() [1/2]

Double casacore::MVBaseline::separation

(

const MVBaseline &

other

)

const

Get the angular separation between two directions.

separation() [2/2]

Quantity casacore::MVBaseline::separation	(	const MVBaseline &	other,
		const Unit &	unit
	)		const

---

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

• casa/Quanta/MVBaseline.h