A Measure: Magnetic field on Earth. More...

#include <MEarthMagnetic.h>

Inheritance diagram for casa::MEarthMagnetic:

Public Types
enum	Types { J2000, JMEAN, JTRUE, APP, B1950, BMEAN, BTRUE, GALACTIC, HADEC, AZEL, AZELSW, AZELGEO, AZELSWGEO, JNAT, ECLIPTIC, MECLIPTIC, TECLIPTIC, SUPERGAL, ITRF, TOPO, ICRS, N_Types, IGRF, N_Models, EXTRA, DEFAULT, AZELNE, AZELNEGEO }
	Types of known MEarthMagnetics Tip: The order defines the order in the translation matrix FromTo in the getConvert routine in MCEarthMagnetic; Do not change the order without changing the array; Additions should be made before N_types, and an additional row and column should be coded in FromTo, and in showType(); More...
typedef MVEarthMagnetic	MVType
	Measure value container for this class (i.e.
typedef MCEarthMagnetic	MCType
	Measure conversion routines for this class (i.e.
typedef MeasRef< MEarthMagnetic >	Ref
	Measure reference (i.e.
typedef MeasConvert < MEarthMagnetic >	Convert
	Measure Convert (i.e.
typedef ScalarMeasColumn < MEarthMagnetic >	ScalarColumn
	Measure table Columns (e.g., MEarthMagnetic::ScalarColumn)
typedef ArrayMeasColumn < MEarthMagnetic >	ArrayColumn
Public Member Functions
typedef	WHATEVER_SUN_TYPEDEF (MEarthMagnetic) Types Types
	Reference enum Types (included originally for gcc 2.95)
	MEarthMagnetic ()
	Note: In the following constructors and other functions, all MeasRef* can be replaced with simple `Measure::TYPE` where no offsets or frames are needed in the reference;* Default constructor; generates the default IGRF type
	MEarthMagnetic (const MVEarthMagnetic &dt)
	Create from data and reference.
	MEarthMagnetic (const MVEarthMagnetic &dt, const MEarthMagnetic::Ref &rf)
	MEarthMagnetic (const MVEarthMagnetic &dt, MEarthMagnetic::Types rf)
	MEarthMagnetic (const Measure *dt)
	MEarthMagnetic (const MeasValue *dt)
	MEarthMagnetic (const MEarthMagnetic::Ref &rf)
	MEarthMagnetic (const MEarthMagnetic &)

MEarthMagnetic &	operator= (const MEarthMagnetic &)
virtual	~MEarthMagnetic ()

virtual const String &	tellMe () const
	Tell me your type.
virtual uInt	type () const
	Get the type (== Register() of derived Measure (faster than Strings) All should have: static uInt myType();.
Bool	giveMe (MEarthMagnetic::Ref &mr, const String &in)
virtual Bool	setOffset (const Measure &in)
	Set the offset in the reference (False if non-matching Measure)
virtual Bool	setRefString (const String &in)
	Set the reference type to the specified String.
virtual const String &	getDefaultType () const
	Get the default reference type.
virtual const String *	allTypes (Int &nall, Int &nextra, const uInt *&typ) const
	Get a list of all known reference codes.
virtual void	checkTypes () const
	Check if all internal tables of types (both enum and String) are complete and correct.
virtual String	getRefString () const
	Get the reference type (for records, including codes like R_)
virtual Bool	isModel () const
	Tell me if you are a pure model (e.g.
Quantum< Vector< Double > >	get (const Unit &inunit) const
	Get Measure data.
Quantum< Vector< Double > >	getAngle () const
Quantum< Vector< Double > >	getAngle (const Unit &inunit) const
virtual Measure *	clone () const
	Make copy.
Static Public Member Functions
static const String &	showMe ()
static void	assure (const Measure &in)
static MEarthMagnetic::Types	castType (uInt tp)
	Translate reference code.
static const String &	showType (MEarthMagnetic::Types tp)
static const String &	showType (uInt tp)
static Bool	getType (MEarthMagnetic::Types &tp, const String &in)
	Translate string to reference code.
static const String *	allMyTypes (Int &nall, Int &nextra, const uInt *&typ)
static void	checkMyTypes ()
static uInt	myType ()
	Get my type (as Register)
Friends
class	MeasConvert< MEarthMagnetic >
	Conversion of data.

Detailed Description

A Measure: Magnetic field on Earth.

Intended use:

Public interface

 <h3>Review Status</h3><dl><dt>Reviewed By:<dd>UNKNOWN<dt>Date Reviewed:<dd>before2004/08/25</dl>

Prerequisite

Measure class

Etymology

Earth and Magnetic field

Synopsis

MEarthMagnetic forms derived Measure class for Earth' magnetic flux density. The field can be specified as a model, or as a 3D vector (see MVEarthMagnetic ) with a specified reference frame code. If a model is specified, a possibly specified explicit field will be ignored, since the field will be calculated from the model if a conversion is asked for.
The class contains the following magnetic field models:

IGRF international reference field

The reference frame type can be any of the types specified in the MDirection direction types (e.g. AZEL).
Warning: The IGRF needs a Table of coefficients (at 5-year interval)

Conversion between field models is not supported (but not relevant anyway with only one model supported). Conversion to an explicit direction is done by the standard MeasConvert class and rules (see example) using MEarthMagnetic::Convert, and the reference types (e.g. MEarthMagnetic::AZEL).

An EarthMagneticMachine has been provided to get e.g. the field in a certain direction at a certain height.

Example

    // Where on Earth
    MPosition pos(MVPosition(Quantity(20,'m'), Quantity(5,'deg'), 
                             Quantity(52,'deg')), MPosition::WGS84);
    // Time we want it
    MEpoch epo(MVEpoch(50000));
    // Put in frame
    MeasFrame frame(pos, epo);
    // Magnetic field model
    MEarthMagnetic mf;
    // Show field strength in Gauss in AzEl system
    cout <<
      MEarthMagnetic::Convert(mf, MEarthMagnetic::AZEL)().
                getValue().getLength("G") << endl;

Motivation

To have the Earth' magnetic field in the standard Measure environment.

To Do

maybe add other field models if necessary (e.g. dipole)

Definition at line 118 of file MEarthMagnetic.h.

Member Typedef Documentation

typedef ArrayMeasColumn<MEarthMagnetic> casa::MEarthMagnetic::ArrayColumn

Definition at line 179 of file MEarthMagnetic.h.

typedef MeasConvert<MEarthMagnetic> casa::MEarthMagnetic::Convert

Measure Convert (i.e.

MEarthMagnetic::Convert)

Reimplemented from casa::Measure.

Definition at line 176 of file MEarthMagnetic.h.

typedef MCEarthMagnetic casa::MEarthMagnetic::MCType

Measure conversion routines for this class (i.e.

MEarthMagnetic::MCType)

Definition at line 172 of file MEarthMagnetic.h.

typedef MVEarthMagnetic casa::MEarthMagnetic::MVType

Measure value container for this class (i.e.

MEarthMagnetic::MVType)

Definition at line 170 of file MEarthMagnetic.h.

typedef MeasRef<MEarthMagnetic> casa::MEarthMagnetic::Ref

Measure reference (i.e.

MEarthMagnetic::Ref)

Definition at line 174 of file MEarthMagnetic.h.

typedef ScalarMeasColumn<MEarthMagnetic> casa::MEarthMagnetic::ScalarColumn

Measure table Columns (e.g., MEarthMagnetic::ScalarColumn)

Definition at line 178 of file MEarthMagnetic.h.

Member Enumeration Documentation

enum casa::MEarthMagnetic::Types

Types of known MEarthMagnetics
Tip: The order defines the order in the translation matrix FromTo in the getConvert routine in MCEarthMagnetic; Do not change the order without changing the array; Additions should be made before N_types, and an additional row and column should be coded in FromTo, and in showType();

Enumerator:

J2000
JMEAN
JTRUE
APP
B1950
BMEAN
BTRUE
GALACTIC
HADEC
AZEL
AZELSW
AZELGEO
AZELSWGEO
JNAT
ECLIPTIC
MECLIPTIC
TECLIPTIC
SUPERGAL
ITRF
TOPO
ICRS
N_Types
IGRF	Models. First one should be IGRF
N_Models
EXTRA	All extra bits (for internal use only)
DEFAULT	Defaults.
AZELNE	Synonyms.
AZELNEGEO

Reimplemented from casa::Measure.

Definition at line 133 of file MEarthMagnetic.h.

Constructor & Destructor Documentation

casa::MEarthMagnetic::MEarthMagnetic ( )

Note: In the following constructors and other functions, all MeasRef can be replaced with simple Measure::TYPE where no offsets or frames are needed in the reference;
Default constructor; generates the default IGRF type

casa::MEarthMagnetic::MEarthMagnetic ( const MVEarthMagnetic & dt )

Create from data and reference.

casa::MEarthMagnetic::MEarthMagnetic	(	const MVEarthMagnetic &	dt,
		const MEarthMagnetic::Ref &	rf
	)

casa::MEarthMagnetic::MEarthMagnetic	(	const MVEarthMagnetic &	dt,
		MEarthMagnetic::Types	rf
	)

casa::MEarthMagnetic::MEarthMagnetic ( const Measure * dt )

casa::MEarthMagnetic::MEarthMagnetic ( const MeasValue * dt )

casa::MEarthMagnetic::MEarthMagnetic ( const MEarthMagnetic::Ref & rf )

casa::MEarthMagnetic::MEarthMagnetic ( const MEarthMagnetic & )

virtual casa::MEarthMagnetic::~MEarthMagnetic ( ) [virtual]

Member Function Documentation

static const String* casa::MEarthMagnetic::allMyTypes	(	Int &	nall,
		Int &	nextra,
		const uInt *&	typ
	)		`[static]`

virtual const String* casa::MEarthMagnetic::allTypes	(	Int &	nall,
		Int &	nextra,
		const uInt *&	typ
	)		const `[virtual]`

Get a list of all known reference codes.

nall returns the number in list, nextra the number of specials (like planets) that should be at end of list). typ returns the list of corresponding types.

Reimplemented from casa::Measure.

static void casa::MEarthMagnetic::assure ( const Measure & in ) [static]

static MEarthMagnetic::Types casa::MEarthMagnetic::castType ( uInt tp ) [static]

Translate reference code.

The uInt version has a check for valid codes (i.e. it is a safe cast).

Thrown Exceptions

AipsError in the uInt interface if illegal code given

static void casa::MEarthMagnetic::checkMyTypes ( ) [static]

virtual void casa::MEarthMagnetic::checkTypes ( ) const [virtual]

Check if all internal tables of types (both enum and String) are complete and correct.

This function is called automatically if and when necessary.

Thrown Exceptions

AipsError if a (programming) error in the types.

Implements casa::Measure.

virtual Measure* casa::MEarthMagnetic::clone ( ) const [virtual]

Make copy.

Implements casa::Measure.

Quantum<Vector<Double> > casa::MEarthMagnetic::get ( const Unit & inunit ) const

Get Measure data.

Quantum<Vector<Double> > casa::MEarthMagnetic::getAngle ( ) const

Quantum<Vector<Double> > casa::MEarthMagnetic::getAngle ( const Unit & inunit ) const

virtual const String& casa::MEarthMagnetic::getDefaultType ( ) const [virtual]

Get the default reference type.

Implements casa::Measure.

virtual String casa::MEarthMagnetic::getRefString ( ) const [virtual]

Get the reference type (for records, including codes like R_)

Implements casa::Measure.

static Bool casa::MEarthMagnetic::getType	(	MEarthMagnetic::Types &	tp,
		const String &	in
	)		`[static]`

Translate string to reference code.

Bool casa::MEarthMagnetic::giveMe	(	MEarthMagnetic::Ref &	mr,
		const String &	in
	)

virtual Bool casa::MEarthMagnetic::isModel ( ) const [virtual]

Tell me if you are a pure model (e.g.

a planet)

Reimplemented from casa::Measure.

static uInt casa::MEarthMagnetic::myType ( ) [static]

Get my type (as Register)

MEarthMagnetic& casa::MEarthMagnetic::operator= ( const MEarthMagnetic & )

virtual Bool casa::MEarthMagnetic::setOffset ( const Measure & in ) [virtual]

Set the offset in the reference (False if non-matching Measure)

Implements casa::Measure.

virtual Bool casa::MEarthMagnetic::setRefString ( const String & in ) [virtual]

Set the reference type to the specified String.

False if illegal string, reference set to DEFAULT.

Implements casa::Measure.

static const String& casa::MEarthMagnetic::showMe ( ) [static]

static const String& casa::MEarthMagnetic::showType ( MEarthMagnetic::Types tp ) [static]

static const String& casa::MEarthMagnetic::showType ( uInt tp ) [static]

virtual const String& casa::MEarthMagnetic::tellMe ( ) const [virtual]

Tell me your type.

Implements casa::Measure.

virtual uInt casa::MEarthMagnetic::type ( ) const [virtual]

Get the type (== Register() of derived Measure (faster than Strings) All should have: static uInt myType();.

Implements casa::Measure.

typedef casa::MEarthMagnetic::WHATEVER_SUN_TYPEDEF ( MEarthMagnetic )

Reference enum Types (included originally for gcc 2.95)

Friends And Related Function Documentation

friend class MeasConvert< MEarthMagnetic > [friend]

Conversion of data.

Definition at line 123 of file MEarthMagnetic.h.

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

casacore/measures/Measures/MEarthMagnetic.h

Public Types

Public Member Functions

Static Public Member Functions

Friends

Detailed Description

Intended use:

Prerequisite

Etymology

Synopsis

Example

Motivation

To Do

Member Typedef Documentation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Thrown Exceptions

Thrown Exceptions

Friends And Related Function Documentation