Engine to calculate derived MS values. More...

#include <MSCalEngine.h>

Public Member Functions
	MSCalEngine ()
	Default constructor. More...

	~MSCalEngine ()
	Destructor. More...

Table	getTable () const
	Get the table used. More...

void	setTable (const Table &)
	Use the given table (MS or CalTable) in the engine. More...

void	setDirection (const MDirection &)
	Set the direction to be used instead of a direction from the FIELD table. More...

void	setDirColName (const String &colName)
	Set the direction column name to use in the FIELD table. More...

double	getHA (Int antnr, rownr_t rownr)
	Get the hourangle for the given row. More...

void	getHaDec (Int antnr, rownr_t rownr, Array< Double > &)
	Get the hourangle/DEC for the given row. More...

double	getPA (Int antnr, rownr_t rownr)
	Get the parallatic angle for the given row. More...

double	getLAST (Int antnr, rownr_t rownr)
	Get the local sidereal time for the given row. More...

void	getAzEl (Int antnr, rownr_t rownr, Array< Double > &)
	Get the azimuth/elevation for the given row. More...

void	getItrf (Int antnr, rownr_t rownr, Array< Double > &)
	Get the ITRF coordinates for the given row. More...

void	getNewUVW (Bool asApp, rownr_t rownr, Array< Double > &)
	Get the UVW in J2000 or APP for the given row. More...

double	getDelay (Int antnr, rownr_t rownr)
	Get the delay for the given row. More...

Private Member Functions
	MSCalEngine (const MSCalEngine &that)
	Copy constructor cannot be used. More...

MSCalEngine &	operator= (const MSCalEngine &that)
	Assignment cannot be used. More...

Int	setData (Int antnr, rownr_t rownr, Bool fillAnt=False)
	Set the data in the measure converter machines. More...

void	init ()
	Initialize the column objects, etc. More...

void	fillCalDesc ()
	Fill the CalDesc info for calibration tables. More...

void	fillAntPos (Int calDescId, Int calInx)
	Fill or update the antenna positions from the ANTENNA subtable at row calDescId. More...

void	fillFieldDir (Int calDescId, Int calInx)
	Fill or update the field directions from the FIELD subtable at row calDescId. More...

Table	getSubTable (Int calDescId, const String &subTabName, Bool mustExist=True)
	Get a calibration MS subtable for the given id. More...

Private Attributes
Table	itsTable

Int	itsLastCalInx

Int	itsLastFieldId

Int	itsLastAntId

Double	itsLastTime

ScalarColumn< Int >	itsAntCol [2]

ScalarColumn< Int >	itsFeedCol [2]

ScalarColumn< Int >	itsFieldCol

ScalarColumn< Double >	itsTimeCol

ScalarMeasColumn< MEpoch >	itsTimeMeasCol

ScalarColumn< Int >	itsCalCol

map< string, int >	itsCalMap

vector< Int >	itsCalIdMap

MPosition	itsArrayPos

Vector< double >	itsArrayItrf

vector< vector< MPosition > >	itsAntPos

vector< vector< Int > >	itsMount

vector< vector< MDirection > >	itsFieldDir

Bool	itsReadFieldDir

String	itsDirColName

vector< vector< MBaseline > >	itsAntMB

vector< vector< Vector< double > > >	itsAntUvw

vector< Block< bool > >	itsUvwFilled

MDirection::Convert	itsRADecToAzEl

MDirection::Convert	itsPoleToAzEl

MDirection::Convert	itsRADecToHADec

MDirection::Convert	itsRADecToItrf

MDirection::Convert	itsDirToJ2000

MEpoch::Convert	itsUTCToLAST

MBaseline::Convert	itsBLToJ2000

MeasFrame	itsFrame

MDirection	itsLastDirJ2000

Detailed Description

Engine to calculate derived MS values.

Intended use:

Public interface

Review Status

Test programs:: tDerivedMSCal

Prerequisite

MeasurementSet

Synopsis

MSCalEngine is a class used to calculate derived MeasurementSet values hourangle, parallactic angle, azimuth/elevation, local sidereal time, and UVW coordinates. It is used by the DerivedMSCal virtual columns and UDFs, but can be used by other software as well.

The following values can be obtained:

HA is the hourangle of the array center (observatory position).
HA1 is the hourangle of ANTENNA1.
HA2 is the hourangle of ANTENNA2.
HADEC is the hourangle/DEC of the array center (observatory position).
HADEC1 is the hourangle/DEC of ANTENNA1.
HADEC2 is the hourangle/DEC of ANTENNA2.
LAST is the local sidereal time of the array center.
LAST1 is the local sidereal time of ANTENNA1.
LAST2 is the local sidereal time of ANTENNA2.
PA1 is the parallactic angle of ANTENNA1.
PA2 is the parallactic angle of ANTENNA2.
AZEL is the azimuth/elevation of the array center.
AZEL1 is the azimuth/elevation of ANTENNA1.
AZEL2 is the azimuth/elevation of ANTENNA2.
ITRF is the direction in (time-dependent) ITRF coordinates.
UVW_J2000 is the UVW coordinates in J2000 (in meters).

All values have data type double and unit radian (except UVW). The HADEC, AZEL, ITRF and UVW cvalues are arrays while the others are scalars.

This engine is meant for a MeasurementSet, but can be used for any table containing an ANTENNA and FIELD subtable and the relevant columns in the main table (ANTENNA1 and/or ANTENNA2, FIELD_ID, and TIME). It also looks if columns FEED1 and/or FEED2 exist. They are not used yet, but might be in the future for support of multi-feed arrays.
In principle the array center is the Observatory position, which is taken from the Measures Observatory table using the telescope name found in the OBSERVATION subtable or in the table keyword TELESCOPE_NAME. However, if the telescope name cannot be found or is unknown, the position of the middle antenna is used as the array position.

The new CASA Calibration Table format obeys the rules mentioned above, so these tables are fully supported. Note they do not contain an OBSERVATION subtable, but use keyword TELESCOPE_NAME.

The engine can also be used for old CASA Calibration Tables. It understands how they reference the MeasurementSets. Because these calibration tables contain no ANTENNA2 columns, columns XX2 are the same as XX1.

Motivation

Factor out common code.

To Do

Take care of the feeds and their offsets.
Have a conversion engine per field/antenna/feed?

Definition at line 118 of file MSCalEngine.h.

Constructor & Destructor Documentation

casacore::MSCalEngine::MSCalEngine ( )

Default constructor.

casacore::MSCalEngine::~MSCalEngine ( )

Destructor.

casacore::MSCalEngine::MSCalEngine ( const MSCalEngine & that )

private

Copy constructor cannot be used.

Member Function Documentation

void casacore::MSCalEngine::fillAntPos	(	Int	calDescId,
		Int	calInx
	)

private

Fill or update the antenna positions from the ANTENNA subtable at row calDescId.

It is stored in the calInx-th entry of itsAntPos/itsMount.

void casacore::MSCalEngine::fillCalDesc ( )

private

Fill the CalDesc info for calibration tables.

void casacore::MSCalEngine::fillFieldDir	(	Int	calDescId,
		Int	calInx
	)

private

Fill or update the field directions from the FIELD subtable at row calDescId.

It is stored in the calInx-th entry of itsFieldDir.

void casacore::MSCalEngine::getAzEl	(	Int	antnr,
		rownr_t	rownr,
		Array< Double > &
	)

Get the azimuth/elevation for the given row.

double casacore::MSCalEngine::getDelay	(	Int	antnr,
		rownr_t	rownr
	)

Get the delay for the given row.

double casacore::MSCalEngine::getHA	(	Int	antnr,
		rownr_t	rownr
	)

Get the hourangle for the given row.

void casacore::MSCalEngine::getHaDec	(	Int	antnr,
		rownr_t	rownr,
		Array< Double > &
	)

Get the hourangle/DEC for the given row.

void casacore::MSCalEngine::getItrf	(	Int	antnr,
		rownr_t	rownr,
		Array< Double > &
	)

Get the ITRF coordinates for the given row.

double casacore::MSCalEngine::getLAST	(	Int	antnr,
		rownr_t	rownr
	)

Get the local sidereal time for the given row.

void casacore::MSCalEngine::getNewUVW	(	Bool	asApp,
		rownr_t	rownr,
		Array< Double > &
	)

Get the UVW in J2000 or APP for the given row.

double casacore::MSCalEngine::getPA	(	Int	antnr,
		rownr_t	rownr
	)

Get the parallatic angle for the given row.

Table casacore::MSCalEngine::getSubTable	(	Int	calDescId,
		const String &	subTabName,
		Bool	mustExist = `True`
	)

private

Get a calibration MS subtable for the given id.

Table casacore::MSCalEngine::getTable ( ) const

inline

Get the table used.

Definition at line 128 of file MSCalEngine.h.

References itsTable.

void casacore::MSCalEngine::init ( )

private

Initialize the column objects, etc.

MSCalEngine& casacore::MSCalEngine::operator= ( const MSCalEngine & that )

private

Assignment cannot be used.

Int casacore::MSCalEngine::setData	(	Int	antnr,
		rownr_t	rownr,
		Bool	fillAnt = `False`
	)

private

Set the data in the measure converter machines.

The antenna positions are only filled in antnr>=0 or if fillAnt is set. It returns the mount of the antenna.

void casacore::MSCalEngine::setDirColName ( const String & colName )

Set the direction column name to use in the FIELD table.

void casacore::MSCalEngine::setDirection ( const MDirection & )

Set the direction to be used instead of a direction from the FIELD table.

void casacore::MSCalEngine::setTable ( const Table & )

Use the given table (MS or CalTable) in the engine.

Member Data Documentation

ScalarColumn<Int> casacore::MSCalEngine::itsAntCol[2]

private

Definition at line 200 of file MSCalEngine.h.

vector<vector<MBaseline> > casacore::MSCalEngine::itsAntMB

private

Definition at line 215 of file MSCalEngine.h.

vector<vector<MPosition> > casacore::MSCalEngine::itsAntPos

private

Definition at line 210 of file MSCalEngine.h.

vector<vector<Vector<double> > > casacore::MSCalEngine::itsAntUvw

private

Definition at line 216 of file MSCalEngine.h.

Vector<double> casacore::MSCalEngine::itsArrayItrf

private

Definition at line 209 of file MSCalEngine.h.

MPosition casacore::MSCalEngine::itsArrayPos

private

Definition at line 208 of file MSCalEngine.h.

MBaseline::Convert casacore::MSCalEngine::itsBLToJ2000

private

Definition at line 224 of file MSCalEngine.h.

ScalarColumn<Int> casacore::MSCalEngine::itsCalCol

private

Definition at line 205 of file MSCalEngine.h.

vector<Int> casacore::MSCalEngine::itsCalIdMap

private

Definition at line 207 of file MSCalEngine.h.

map<string,int> casacore::MSCalEngine::itsCalMap

private

Definition at line 206 of file MSCalEngine.h.

String casacore::MSCalEngine::itsDirColName

private

Definition at line 214 of file MSCalEngine.h.

MDirection::Convert casacore::MSCalEngine::itsDirToJ2000

private

Definition at line 222 of file MSCalEngine.h.

ScalarColumn<Int> casacore::MSCalEngine::itsFeedCol[2]

private

Definition at line 201 of file MSCalEngine.h.

ScalarColumn<Int> casacore::MSCalEngine::itsFieldCol

private

Definition at line 202 of file MSCalEngine.h.

vector<vector<MDirection> > casacore::MSCalEngine::itsFieldDir

private

Definition at line 212 of file MSCalEngine.h.

MeasFrame casacore::MSCalEngine::itsFrame

private

Definition at line 225 of file MSCalEngine.h.

Int casacore::MSCalEngine::itsLastAntId

private

Definition at line 198 of file MSCalEngine.h.

Int casacore::MSCalEngine::itsLastCalInx

private

Definition at line 196 of file MSCalEngine.h.

MDirection casacore::MSCalEngine::itsLastDirJ2000

private

Definition at line 226 of file MSCalEngine.h.

Int casacore::MSCalEngine::itsLastFieldId

private

Definition at line 197 of file MSCalEngine.h.

Double casacore::MSCalEngine::itsLastTime

private

Definition at line 199 of file MSCalEngine.h.

vector<vector<Int> > casacore::MSCalEngine::itsMount

private

Definition at line 211 of file MSCalEngine.h.

MDirection::Convert casacore::MSCalEngine::itsPoleToAzEl

private

Definition at line 219 of file MSCalEngine.h.

MDirection::Convert casacore::MSCalEngine::itsRADecToAzEl

private

Definition at line 218 of file MSCalEngine.h.

MDirection::Convert casacore::MSCalEngine::itsRADecToHADec

private

Definition at line 220 of file MSCalEngine.h.

MDirection::Convert casacore::MSCalEngine::itsRADecToItrf

private

Definition at line 221 of file MSCalEngine.h.

Bool casacore::MSCalEngine::itsReadFieldDir

private

Definition at line 213 of file MSCalEngine.h.

Table casacore::MSCalEngine::itsTable

private

Definition at line 195 of file MSCalEngine.h.

Referenced by getTable().

ScalarColumn<Double> casacore::MSCalEngine::itsTimeCol

private

Definition at line 203 of file MSCalEngine.h.

ScalarMeasColumn<MEpoch> casacore::MSCalEngine::itsTimeMeasCol

private

Definition at line 204 of file MSCalEngine.h.

MEpoch::Convert casacore::MSCalEngine::itsUTCToLAST

private

Definition at line 223 of file MSCalEngine.h.

vector<Block<bool> > casacore::MSCalEngine::itsUvwFilled

private

Definition at line 217 of file MSCalEngine.h.

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

derivedmscal/DerivedMC/MSCalEngine.h

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Motivation

To Do

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation