casacore::MVFrequency Class Reference

Internal value for MFrequency. More...

#include <MVFrequency.h>

Inheritance diagram for casacore::MVFrequency:

Public Member Functions
	MVFrequency ()
	Default constructor: generate a zero value. More...
	MVFrequency (const MVFrequency &other)
	Copy constructor. More...
MVFrequency &	operator= (const MVFrequency &other)
	Copy assignment. More...
	MVFrequency (Double d)
	Constructor from Double, assuming Hz. More...
	MVFrequency (const Quantity &other)
	Constructor from Quantum : value taken will be the canonical value. More...
	MVFrequency (const Quantum< Vector< Double > > &other)
	MVFrequency (const Vector< Double > &other)
	Constructor from Vector. More...
	MVFrequency (const Vector< Quantity > &other)
	~MVFrequency ()
	Destructor. More...
	operator Double () const
	Conversion operator. More...
MVFrequency &	operator+= (const MVFrequency &other)
	Addition. More...
MVFrequency &	operator-= (const MVFrequency &other)
Bool	operator== (const MVFrequency &other) const
	Comparisons. More...
Bool	operator!= (const MVFrequency &other) const
Bool	near (const MVFrequency &other, Double tol=1e-13) const
Bool	nearAbs (const MVFrequency &other, Double tol=1e-13) const
virtual uInt	type () const
	Tell me your type. More...
virtual void	print (ostream &os) const
	Print data. More...
virtual MeasValue *	clone () const
	Clone. More...
Double	getValue () const
	Adjust value: taken from base class, a NOP. More...
Quantity	get () const
	Get quantity in Hz. More...
Quantity	get (const Unit &unit) const
	Get the wave characteristics in (recognised) specified units. 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 Bool	putValue (const Vector< Quantum< Double > > &in)
	Set the internal value if correct values and dimensions. 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...
virtual Vector< Quantum< Double > >	getXRecordValue () const
virtual Vector< Quantum< Double > >	getTMRecordValue () const
virtual void	adjust ()
	Some of the Measure values used need the occasional adjustments to proper values. More...
virtual void	adjust (Double &val)
	Adjust value and return a normalisation value. More...
virtual void	readjust (Double val)
	Re-adjust, i.e. More...

Static Public Member Functions
static void	assure (const MeasValue &in)

Private Member Functions
Double	makeF (Double v, const Unit &dt, Bool rev=False) const
	Get correct data type conversion factor from input Quantum. More...

Private Attributes
Double	val
	Value. More...

Detailed Description

Internal value for MFrequency.

Intended use:

Public interface

Review Status

Reviewed By:

tcornwel

Date Reviewed:

1996/02/23

Test programs:

tMeasMath

Prerequisite

• MeasValue

Etymology

From Measure, Value and Frequency

Synopsis

An MVFrequency is a simple Double, to be used in the MFrequency measure. Requirements can be found in the MeasValue base class.
The only reasonable constructor is (but all MeasValue constructors are present) MVFrequency(Double) (with assumed Hz units); and an operator Double takes care of all other possibilities. Its external use is for MeasConvert, to distinguish between input in internal Measure units, and values which have to have units applied.
The MVFrequency(Quantum) constructors recognise the type of wave characteristics presented from its units. Recognised are:

• frequency (1/time)
• time
• angle/time
• wavelength
• 1/wavelength (in 2pi units)
• energy (h.nu)
• impulse

The frequency is returned in Hz with getValue(); or as a Quantity in Hz with get(); or in one of the above units with get(unit).

Example

See MFrequency

Motivation

To aid coordinate transformations possibilities

Definition at line 97 of file MVFrequency.h.

Constructor & Destructor Documentation

casacore::MVFrequency::MVFrequency

(

)

Default constructor: generate a zero value.

casacore::MVFrequency::MVFrequency

(

const MVFrequency &

other

)

Copy constructor.

casacore::MVFrequency::MVFrequency

(

Double

d

)

Constructor from Double, assuming Hz.

casacore::MVFrequency::MVFrequency

(

const Quantity &

other

)

Constructor from Quantum : value taken will be the canonical value.

casacore::MVFrequency::MVFrequency

(

const Quantum< Vector< Double > > &

other

)

casacore::MVFrequency::MVFrequency

(

const Vector< Double > &

other

)

Constructor from Vector.

A zero value will be taken for an empty vector, the canonical value for a quantum vector.

Thrown Exceptions

• AipsError if vector length > 1

casacore::MVFrequency::MVFrequency

(

const Vector< Quantity > &

other

)

casacore::MVFrequency::~MVFrequency

(

)

Destructor.

Member Function Documentation

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

static

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

virtual

Clone.

Implements casacore::MeasValue.

Quantity casacore::MVFrequency::get

(

)

const

Get quantity in Hz.

Quantity casacore::MVFrequency::get

(

const Unit &

unit

)

const

Get the wave characteristics in (recognised) specified units.

virtual Vector<Quantum<Double> > casacore::MVFrequency::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.

Implements casacore::MeasValue.

Double casacore::MVFrequency::getValue

(

)

const

Adjust value: taken from base class, a NOP.

Get value in Hz

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

virtual

Get the value in internal units.

Implements casacore::MeasValue.

Double casacore::MVFrequency::makeF ( Double  v, const Unit &  dt, Bool  rev = False  ) const

private

Get correct data type conversion factor from input Quantum.

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

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

casacore::MVFrequency::operator Double

(

)

const

Conversion operator.

Bool casacore::MVFrequency::operator!=

(

const MVFrequency &

other

)

const

MVFrequency& casacore::MVFrequency::operator+=

(

const MVFrequency &

other

)

Addition.

MVFrequency& casacore::MVFrequency::operator-=

(

const MVFrequency &

other

)

MVFrequency& casacore::MVFrequency::operator=

(

const MVFrequency &

other

)

Copy assignment.

Bool casacore::MVFrequency::operator==

(

const MVFrequency &

other

)

const

Comparisons.

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

virtual

Print data.

Implements casacore::MeasValue.

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

virtual

Set the internal value if correct values and dimensions.

Implements casacore::MeasValue.

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

virtual

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

Implements casacore::MeasValue.

virtual uInt casacore::MVFrequency::type ( ) const

virtual

Tell me your type.

Implements casacore::MeasValue.

Member Data Documentation

Double casacore::MVFrequency::val

private

Value.

Definition at line 180 of file MVFrequency.h.

---

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

• casa/casacore/casa/Quanta/MVFrequency.h