FluxCalcLogFreqBrokenPolynomial: Implementation base class for flux standards which are broken polynomials of log10(frequency). More...

#include <FluxCalcLogFreqPolynomial.h>

Inheritance diagram for casa::FluxCalcLogFreqBrokenPolynomial:

Public Member Functions
	FluxCalcLogFreqBrokenPolynomial ()

template<casacore::Int lford1, casacore::Int lford2>
void	fill_lohi_coeffs (const casacore::RigidVector< casacore::Float, lford1 > &lorv, const casacore::MFrequency &break_freq, const casacore::RigidVector< casacore::Float, lford2 > &hirv)

virtual casacore::Bool	operator() (Flux< casacore::Double > &value, Flux< casacore::Double > &error, const casacore::MFrequency &mfreq, const casacore::Bool updatecoeffs)
	Set the log10(frequency) polynomial coefficients for calculating the flux density and its uncertainty, and the unit (typically "MHz" or "GHz") that the coefficients assume. More...

Public Member Functions inherited from casa::FluxCalcLogFreqPolynomial
virtual casacore::Bool	setSource (const casacore::String &sourceName, const casacore::MDirection &sourceDir)

void	setFreqUnit (const casacore::String &freqUnit)

template<casacore::Int lford, casacore::Int errord>
void	fill_coeffs (const casacore::RigidVector< casacore::Float, lford > &lfrv, const casacore::RigidVector< casacore::Float, errord > &errrv)
	Functions for setting up coeffs_p by taking a bunch of numbers (packaged in RigidVectors) and formatting them into coeffs_p. More...

template<casacore::Int lford>
void	fill_coeffs (const casacore::RigidVector< casacore::Float, lford > &lfrv)
	Like fill_coeffs(lfrv, errrv), but it only takes the flux density coefficients, and substitutes an empty casacore::Vector for the error coefficients. More...

void	fill_coeffs (const casacore::Vector< casacore::Float > &lfv)

Public Member Functions inherited from casa::FluxStdSrcs
FSS::Source	srcNameToEnum (const casacore::String &srcName, const casacore::MDirection &dir) const
	Returns an enum of srcName. More...

casacore::String	EnumToSrcName (const FSS::Source srcEnum) const
	Returns srcName string of the srcEnum. More...

casacore::MDirection	getDirection (const FSS::Source srcEnum) const
	Get source direction of srcEnum. More...

	~FluxStdSrcs ()

Private Attributes
casacore::MFrequency	break_freq_p

casacore::Bool	in_low_state_p

casacore::Vector< casacore::Float >	low_coeffs_p

casacore::Vector< casacore::Float >	high_coeffs_p

Additional Inherited Members
Public Types inherited from casa::FluxCalcLogFreqPolynomial
typedef casacore::RigidVector < casacore::Float, 2 >	RVF2
	Some abbreviations, since the classes derived from this have to define many polynomial coefficients. More...

typedef casacore::RigidVector < casacore::Float, 3 >	RVF3

typedef casacore::RigidVector < casacore::Float, 4 >	RVF4

typedef casacore::RigidVector < casacore::Float, 5 >	RVF5

Public Types inherited from casa::FluxCalcVQS
typedef FluxCalcVQS	FCVQS

typedef casacore::RigidVector < casacore::String, 4 >	RVS4

typedef casacore::RigidVector < casacore::String, 5 >	RVS5

Public Types inherited from casa::FluxStdSrcs
enum	Source { THREEC286, THREEC48, THREEC147, THREEC138, NINETEEN34M638, THREEC295, THREEC196, THREEC123, THREEC380, J0133, FORNAXA, J0444, PICTORA, TAURUSA, HYDRAA, VIRGOA, HERCULESA, THREEC353, CYGNUSA, THREEC444, CASSIOPEIAA, NUMBER_SOURCES, UNKNOWN_SOURCE }
	Source identifiers. More...

typedef FluxStdSrcs	FSS

typedef casacore::RigidVector < casacore::String, 6 >	RVS6

Public Attributes inherited from casa::FluxCalcVQS
	NUMBER_SOURCES
	Source identifiers. More...

Protected Member Functions inherited from casa::FluxStdSrcs
	FluxStdSrcs ()

Detailed Description

FluxCalcLogFreqBrokenPolynomial: Implementation base class for flux standards which are broken polynomials of log10(frequency).

Intended use:

Public interface

Prerequisite

FluxCalcLogFreqPolynomial module

Etymology

From FluxCalcLogFreqPolynomial and "broken".

Synopsis

The FluxCalcLogFreqBrokenPolynomial class extends FluxCalcLogFreqPolynomial to allow one set of coefficients to be used below a certain frequency (the break frequency) and another above it. Ideally the sets should mesh well enough to make the resulting function at least roughly continuous.

Example

Motivation

Some of the flux classes use a broken polynomial for 1934-638, and some do not.

To Do

Handle an arbitrary number of breaks.

Definition at line 176 of file FluxCalcLogFreqPolynomial.h.

Constructor & Destructor Documentation

casa::FluxCalcLogFreqBrokenPolynomial::FluxCalcLogFreqBrokenPolynomial ( )

Member Function Documentation

template<casacore::Int lford1, casacore::Int lford2>

void casa::FluxCalcLogFreqBrokenPolynomial::fill_lohi_coeffs	(	const casacore::RigidVector< casacore::Float, lford1 > &	lorv,
		const casacore::MFrequency &	break_freq,
		const casacore::RigidVector< casacore::Float, lford2 > &	hirv
	)

virtual casacore::Bool casa::FluxCalcLogFreqBrokenPolynomial::operator()	(	Flux< casacore::Double > &	value,
		Flux< casacore::Double > &	error,
		const casacore::MFrequency &	mfreq,
		const casacore::Bool	updatecoeffs
	)

virtual

Set the log10(frequency) polynomial coefficients for calculating the flux density and its uncertainty, and the unit (typically "MHz" or "GHz") that the coefficients assume.

Note that errcoeffs does not have to have the same number of terms as lfcoeffs, or any terms at all, and that each term in its polynomial is (errcoeff[order] * pow(log10(freq), order))**2. FluxCalcLogFreqPolynomial(const casacore::String& freqUnit, const casacore::Vector<casacore::Double>& lfcoeffs, const casacore::Vector<casacore::Double>& errcoeffs);

Set value and error with the expected flux density and its uncertainty (0.0 if unknown) at mfreq. Set updatecoeffs = true if the source considered to be time variable.

Reimplemented from casa::FluxCalcLogFreqPolynomial.