Position for comets and other solar system bodies. More...

#include <MeasComet.h>

Public Types
enum	Types { MJD, RA, DEC, RHO, RADVEL, DISKLONG, DISKLAT, N_Columns, N_Types }
	Types of known data. More...

Public Member Functions
	MeasComet ()
	Construct using the aipsrc value (measures.comet.file) More...

	MeasComet (const String &path)
	Construct a table from the named path. More...

	MeasComet (const Table &tabin, const String &path)
	Construct a table from the name and the input table. More...

	MeasComet (const MeasComet &other)
	Copy constructor. More...

MeasComet &	operator= (const MeasComet &other)
	Copy assign. More...

	~MeasComet ()

Bool	ok () const
	Is it a valid comet class (i.e. More...

const String &	getName () const
	Get the name of the comet. More...

const MVPosition &	getTopo () const
	Get the topo position. More...

MDirection::Types	getType () const
	Get the direction type. More...

Double	getStart () const
	Get the start of the table (in MJD) More...

Double	getEnd () const
	Get the end of the table (in MJD) More...

Int	nelements () const
	Get number of entries. More...

Bool	get (MVPosition &returnValue, Double date) const
	Get a comet position. More...

Bool	getDisk (MVDirection &returnValue, Double date) const
	Get the local on-disk direction. More...

Bool	getRadVel (MVRadialVelocity &returnValue, Double date) const
	Get the velocity from a comet table, interpolated for date(in MJD(TDB)). More...

Double	getTemperature (const Bool squawk)
	Return the temperature in K, or -1 if the table does not have it. More...

Double	getMeanRad (const Bool squawk)
	Return the mean radius in AU, or -1 if the table does not have it. More...

MeasComet *	clone () const
	Create a clone. More...

void	closeMeas ()
	Close the Comet tabls only. More...

String	getTablePath ()
	Convenience function that returns the absolute path to the ephemeris table connected to the MeasComet object. More...

Comet table has posrefsys defined *Bool	hasPosrefsys () const

MDirection::Types	getPosrefsysType () const
	Get the posrefsys dir type. More...

Static Public Member Functions
static Double	get_Quantity_keyword (const TableRecord &ks, const String &kw, const Unit &unit, Bool &success)
	Convenience function that returns ks[kw] in units of unit, setting success. More...

Private Member Functions
Bool	initMeas (const String &which, const Table *tabin=0)
	Initialise table from the name given. More...

Bool	fillMeas (Double utf) const
	Fill Table lines. More...

MVPosition	getRelPosition (const uInt index) const
	Helper functions for accessing ldat_p. More...

MVDirection	getDiskLongLat (const uInt index) const

Bool	getExtras ()
	Try to read mean_rad_p and temperature_p, returning whether or not it was successful. More...

Private Attributes
Table	tab_p
	Initialized in the "initialization list" of the c'tors, so maintain order: More...

Bool	measFlag_p
	Measured data readable. More...

Bool	measured_p
	Measured data present. More...

ROTableRow	row_p
	Row descriptions. More...

Double	mjd0_p
	First MJD in list - 1.0 * dmjd_p. More...

Double	mjdl_p
	Last MJD in list. More...

Double	dmjd_p
	Increment in rows. More...

Int	nrow_p
	Number of rows. More...

String	name_p
	Name of comet. More...

MVPosition	topo_p
	Position on Earth. More...

MDirection::Types	mtype_p
	Type of coordinates. More...

Bool	msgDone_p
	Message given. More...

String	tp_p
	File names. More...

Bool	haveDiskLongLat_p
	Whether or not the sub-observer longitude and latitude are available. More...

uInt	ncols_p

Vector< RORecordFieldPtr < Double > >	rfp_p
	These may be initialized inside the c'tors, but the order here is unimportant: More...

Int	lnr_p [2]
	Lines in memory. More...

Vector< Double >	ldat_p [2]
	Last read data (measlow - meashigh) More...

Bool	haveTriedExtras_p
	which isn't. More...

Double	temperature_p

Double	mean_rad_p

Bool	hasPosrefsys_p

MDirection::Types	posrefsystype_p

Detailed Description

Position for comets and other solar system bodies.

Intended use:

Internal

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25
Test programs:: tMeasComet

Prerequisite

MeasTable

Etymology

From Measure and Comet

Synopsis

MeasComet is the interface class between generated Comet position tables and the Direction conversion machinery. Tables are found using the aipsrc (using measures.<table>.directory) mechanism. If not provided they are assumed to reside in standard places Tables are assumed to have the VS_VERSION, VS_DATE, VS_CREATE, VS_TYPE, MJD0 (first MJD in table - 1.0 * dMJD, >= 10000), dMJD (increment between successive MJDs, in days, > 0), and NAME keywords, be gapless (constant dMJD), and be of type IERS, or else an exception will be thrown.
They are also assumed to have the MJD, RA, DEC, Rho, and RadVel columns. The DiskLong and DiskLat columns can be used if they are present, but they are no longer expected. The get() method will obtain data from the cometary tables. The data obtained will be in the specified frame. Note that the normal usage of these tables is through the Measures system.

Note: A message is logged (once) if a date outside the range in the Tables is asked for;

Thrown Exceptions

AipsError if table opened has wrong format or otherwise corrupted.

Example

See test/tMeasComet.cc.

tbd

Motivation

To use the JPL data for positions of solar system bodies

Definition at line 106 of file MeasComet.h.

Member Enumeration Documentation

enum casacore::MeasComet::Types

Types of known data.

Enumerator
MJD	MJD (must be first in list)
RA	Columns with data.
DEC
RHO
RADVEL
DISKLONG
DISKLAT
N_Columns	Number of columns.
N_Types

Definition at line 113 of file MeasComet.h.

Constructor & Destructor Documentation

casacore::MeasComet::MeasComet ( )

Construct using the aipsrc value (measures.comet.file)

casacore::MeasComet::MeasComet ( const String & path )

explicit

Construct a table from the named path.

casacore::MeasComet::MeasComet	(	const Table &	tabin,
		const String &	path
	)

Construct a table from the name and the input table.

casacore::MeasComet::MeasComet ( const MeasComet & other )

Copy constructor.

casacore::MeasComet::~MeasComet ( )

Member Function Documentation

MeasComet* casacore::MeasComet::clone ( ) const

Create a clone.

void casacore::MeasComet::closeMeas ( )

Close the Comet tabls only.

Bool casacore::MeasComet::fillMeas ( Double utf ) const

private

Fill Table lines.

Bool casacore::MeasComet::get	(	MVPosition &	returnValue,
		Double	date
	)		const

Get a comet position.

static Double casacore::MeasComet::get_Quantity_keyword	(	const TableRecord &	ks,
		const String &	kw,
		const Unit &	unit,
		Bool &	success
	)

static

Convenience function that returns ks[kw] in units of unit, setting success.

Bool casacore::MeasComet::getDisk	(	MVDirection &	returnValue,
		Double	date
	)		const

Get the local on-disk direction.

Returns False if the time or sub-observer longitude and latitude are unavailable, True on success.

MVDirection casacore::MeasComet::getDiskLongLat ( const uInt index ) const

private

Double casacore::MeasComet::getEnd ( ) const

Get the end of the table (in MJD)

Bool casacore::MeasComet::getExtras ( )

private

Try to read mean_rad_p and temperature_p, returning whether or not it was successful.

(but the real mark of success is whether or not they are positive.) It sets haveTriedExtras_p to true and will return right away if it is already true.

Double casacore::MeasComet::getMeanRad ( const Bool squawk )

Return the mean radius in AU, or -1 if the table does not have it.

If squawk is true an error message will also be posted.

const String& casacore::MeasComet::getName ( ) const

Get the name of the comet.

MDirection::Types casacore::MeasComet::getPosrefsysType ( ) const

Get the posrefsys dir type.

Bool casacore::MeasComet::getRadVel	(	MVRadialVelocity &	returnValue,
		Double	date
	)		const

Get the velocity from a comet table, interpolated for date(in MJD(TDB)).

MVPosition casacore::MeasComet::getRelPosition ( const uInt index ) const

private

Helper functions for accessing ldat_p.

index should be either 0 or 1, but that isn't checked!

Double casacore::MeasComet::getStart ( ) const

Get the start of the table (in MJD)

String casacore::MeasComet::getTablePath ( )

Convenience function that returns the absolute path to the ephemeris table connected to the MeasComet object.

Double casacore::MeasComet::getTemperature ( const Bool squawk )

Return the temperature in K, or -1 if the table does not have it.

If squawk is true an error message will also be posted.

const MVPosition& casacore::MeasComet::getTopo ( ) const

Get the topo position.

MDirection::Types casacore::MeasComet::getType ( ) const

Get the direction type.

Comet table has posrefsys defined* Bool casacore::MeasComet::hasPosrefsys ( ) const

Bool casacore::MeasComet::initMeas	(	const String &	which,
		const Table *	tabin = `0`
	)

private

Initialise table from the name given.

Int casacore::MeasComet::nelements ( ) const

Get number of entries.

Bool casacore::MeasComet::ok ( ) const

inline

Is it a valid comet class (i.e.

can it be used)

Definition at line 144 of file MeasComet.h.

References measured_p.

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

Copy assign.

Member Data Documentation

Double casacore::MeasComet::dmjd_p

private

Increment in rows.

Definition at line 230 of file MeasComet.h.

Bool casacore::MeasComet::hasPosrefsys_p

private

Definition at line 262 of file MeasComet.h.

Bool casacore::MeasComet::haveDiskLongLat_p

private

Whether or not the sub-observer longitude and latitude are available.

Definition at line 245 of file MeasComet.h.

Bool casacore::MeasComet::haveTriedExtras_p

private

which isn't.

Definition at line 259 of file MeasComet.h.

Vector<Double> casacore::MeasComet::ldat_p[2]

mutableprivate

Last read data (measlow - meashigh)

Definition at line 257 of file MeasComet.h.

Int casacore::MeasComet::lnr_p[2]

mutableprivate

Lines in memory.

Definition at line 255 of file MeasComet.h.

Double casacore::MeasComet::mean_rad_p

private

Definition at line 261 of file MeasComet.h.

Bool casacore::MeasComet::measFlag_p

private

Measured data readable.

Definition at line 220 of file MeasComet.h.

Bool casacore::MeasComet::measured_p

private

Measured data present.

Definition at line 222 of file MeasComet.h.

Referenced by ok().

Double casacore::MeasComet::mjd0_p

private

First MJD in list - 1.0 * dmjd_p.

Definition at line 226 of file MeasComet.h.

Double casacore::MeasComet::mjdl_p

private

Last MJD in list.

Definition at line 228 of file MeasComet.h.

Bool casacore::MeasComet::msgDone_p

private

Message given.

Definition at line 240 of file MeasComet.h.

MDirection::Types casacore::MeasComet::mtype_p

private

Type of coordinates.

Definition at line 238 of file MeasComet.h.

String casacore::MeasComet::name_p

private

Name of comet.

Definition at line 234 of file MeasComet.h.

uInt casacore::MeasComet::ncols_p

private

Definition at line 247 of file MeasComet.h.

Int casacore::MeasComet::nrow_p

private

Number of rows.

Definition at line 232 of file MeasComet.h.

MDirection::Types casacore::MeasComet::posrefsystype_p

private

Definition at line 263 of file MeasComet.h.

Vector<RORecordFieldPtr<Double> > casacore::MeasComet::rfp_p

private

These may be initialized inside the c'tors, but the order here is unimportant:

Field pointers

Definition at line 253 of file MeasComet.h.

ROTableRow casacore::MeasComet::row_p

private

Row descriptions.

Definition at line 224 of file MeasComet.h.

Table casacore::MeasComet::tab_p

private

Initialized in the "initialization list" of the c'tors, so maintain order:

Actual table

Definition at line 218 of file MeasComet.h.

Double casacore::MeasComet::temperature_p

private

Definition at line 260 of file MeasComet.h.

MVPosition casacore::MeasComet::topo_p

private

Position on Earth.

Definition at line 236 of file MeasComet.h.

String casacore::MeasComet::tp_p

private

File names.

Definition at line 242 of file MeasComet.h.

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

casa/casacore/measures/Measures/MeasComet.h

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Intended use:

Review Status

Prerequisite

Etymology

Synopsis

Thrown Exceptions

Example

Motivation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation