TaQL UDFs to calculate derived MS values. More...

#include <UDFMSCal.h>

Inheritance diagram for casacore::UDFMSCal:

Public Types
enum	ColType { HA, HADEC, PA, LAST, AZEL, ITRF, UVWWVL, UVWWVLS, NEWUVW, NEWUVWWVL, NEWUVWWVLS, DELAY, STOKES, SELECTION, GETVALUE }
	Define the possible 'column' types. More...

enum	SelType { BASELINE, CORR, TIME, UVDIST, SPW, FIELD, FEED, ARRAY, SCAN, STATE, OBS }
	Define the possible selection types. More...

Public Types inherited from casacore::UDFBase
typedef UDFBase *	MakeUDFObject (const String &functionName)
	The signature of a global or static member function creating an object of the UDF. More...

Public Member Functions
	UDFMSCal (ColType, Int arg)
	Create object the given ColType and SelType. More...

	UDFMSCal (const String &funcName)
	Create the object for getting a value from a column in a subtable. More...

	UDFMSCal (const String &funcName, const String &subtabName, const String &idColName, Int arg=0)

	UDFMSCal (const String &funcName, const String &subtabName, const String &idColName, const String &colName)

virtual void	setup (const Table &, const TaQLStyle &)
	Setup the object. More...

virtual Bool	getBool (const TableExprId &id)
	Get the value. More...

virtual Int64	getInt (const TableExprId &id)

virtual Double	getDouble (const TableExprId &id)

virtual DComplex	getDComplex (const TableExprId &id)

virtual String	getString (const TableExprId &id)

virtual MArray< Bool >	getArrayBool (const TableExprId &id)

virtual MArray< Int64 >	getArrayInt (const TableExprId &id)

virtual MArray< Double >	getArrayDouble (const TableExprId &id)

virtual MArray< DComplex >	getArrayDComplex (const TableExprId &id)

virtual MArray< String >	getArrayString (const TableExprId &id)

virtual void	recreateColumnObjects (const Vector< uInt > &rownrs)
	Let a derived class recreate its column objects in case a selection has to be applied. More...

Public Member Functions inherited from casacore::UDFBase
	UDFBase ()
	Only default constructor is needed. More...

virtual	~UDFBase ()
	Destructor. More...

virtual TaqlRegex	getRegex (const TableExprId &id)

virtual MVTime	getDate (const TableExprId &id)

virtual MArray< MVTime >	getArrayDate (const TableExprId &id)

const String &	getUnit () const
	Get the unit. More...

const Record &	getAttributes () const
	Get the attributes. More...

void	getAggrNodes (vector< TableExprNodeRep * > &aggr)
	Get the nodes in the function operands representing an aggregate function. More...

void	getColumnNodes (vector< TableExprNodeRep * > &cols)
	Get the nodes in the function operands representing a table column. More...

void	init (const std::vector< TENShPtr > &arg, const Table &table, const TaQLStyle &)
	Initialize the function object. More...

TableExprNodeRep::NodeDataType	dataType () const
	Get the data type. More...

Int	ndim () const
	Get the dimensionality of the results. More...

const IPosition &	shape () const
	Get the result shape if the same for all results. More...

Bool	isConstant () const
	Tell if the UDF gives a constant result. More...

Bool	isAggregate () const
	Tell if the UDF is an aggregate function. More...

void	disableApplySelection ()
	Do not apply the selection. More...

void	applySelection (const Vector< uInt > &rownrs)
	If needed, let the UDF re-create column objects for a selection of rows. More...

Static Public Member Functions
static UDFBase *	makeHA (const String &)
	Function to create an object. More...

static UDFBase *	makeHA1 (const String &)

static UDFBase *	makeHA2 (const String &)

static UDFBase *	makeHADEC (const String &)

static UDFBase *	makeHADEC1 (const String &)

static UDFBase *	makeHADEC2 (const String &)

static UDFBase *	makePA1 (const String &)

static UDFBase *	makePA2 (const String &)

static UDFBase *	makeLAST (const String &)

static UDFBase *	makeLAST1 (const String &)

static UDFBase *	makeLAST2 (const String &)

static UDFBase *	makeAZEL (const String &)

static UDFBase *	makeAZEL1 (const String &)

static UDFBase *	makeAZEL2 (const String &)

static UDFBase *	makeITRF (const String &)

static UDFBase *	makeUvwWvl (const String &)

static UDFBase *	makeUvwWvls (const String &)

static UDFBase *	makeUvwJ2000 (const String &)

static UDFBase *	makeWvlJ2000 (const String &)

static UDFBase *	makeWvlsJ2000 (const String &)

static UDFBase *	makeUvwAPP (const String &)

static UDFBase *	makeWvlAPP (const String &)

static UDFBase *	makeWvlsAPP (const String &)

static UDFBase *	makeDelay (const String &)

static UDFBase *	makeDelay1 (const String &)

static UDFBase *	makeDelay2 (const String &)

static UDFBase *	makeStokes (const String &)

static UDFBase *	makeBaseline (const String &)

static UDFBase *	makeCorr (const String &)

static UDFBase *	makeTime (const String &)

static UDFBase *	makeUVDist (const String &)

static UDFBase *	makeSpw (const String &)

static UDFBase *	makeField (const String &)

static UDFBase *	makeFeed (const String &)

static UDFBase *	makeArray (const String &)

static UDFBase *	makeScan (const String &)

static UDFBase *	makeState (const String &)

static UDFBase *	makeObs (const String &)

static UDFBase *	makeAnt1Name (const String &)

static UDFBase *	makeAnt2Name (const String &)

static UDFBase *	makeAnt1Col (const String &)

static UDFBase *	makeAnt2Col (const String &)

static UDFBase *	makeStateCol (const String &)

static UDFBase *	makeObsCol (const String &)

static UDFBase *	makeSpwCol (const String &)

static UDFBase *	makePolCol (const String &)

static UDFBase *	makeFieldCol (const String &)

static UDFBase *	makeProcCol (const String &)

static UDFBase *	makeSubCol (const String &)

Static Public Member Functions inherited from casacore::UDFBase
static void	registerUDF (const String &name, MakeUDFObject *func)
	Register the name and construction function of a UDF (thread-safe). More...

static UDFBase *	createUDF (const String &name, const TaQLStyle &style)
	Create a UDF object (thread-safe). More...

Private Member Functions
void	setupStokes (const Table &table, std::vector< TENShPtr > &operands)
	Setup the Stokes conversion. More...

void	setupSelection (const Table &table, std::vector< TENShPtr > &operands)
	Setup the baseline selection. More...

void	setupDir (TENShPtr &operand)
	Setup direction conversion if a direction is explicitly given. More...

void	setupGetValue (const Table &table, std::vector< TENShPtr > &operands)
	Setup getting column values from a subtable. More...

void	setupWvls (const Table &table, std::vector< TENShPtr > &operands, uInt nargMax)
	Setup getting the wavelength information. More...

Int64	getRowNr (const TableExprId &id)
	Get the rownr in the subtable for GetValue. More...

Array< Double >	toWvls (const TableExprId &)
	Convert the UVW coordinates to wavelengths for the full spectrum. More...

Private Attributes
MSCalEngine	itsEngine

StokesConverter	itsStokesConv

TableExprNode	itsDataNode

TableExprNode	itsIdNode

ArrayColumn< Double >	itsUvwCol

ColType	itsType

Int	itsArg

String	itsFuncName

String	itsSubTabName

String	itsIdColName

String	itsSubColName

Vector< Double >	itsTmpVector

Array< Double >	itsTmpUvwWvl

Vector< Int >	itsDDIds

vector< Double >	itsWavel

vector< Vector< Double > >	itsWavels

Additional Inherited Members
Protected Member Functions inherited from casacore::UDFBase
std::vector< TENShPtr > &	operands ()
	Get the operands. More...

void	setDataType (TableExprNodeRep::NodeDataType)
	Set the data type. More...

void	setNDim (Int ndim)
	Set the dimensionality of the results. More...

void	setShape (const IPosition &shape)
	Set the shape of the results if it is fixed and known. More...

void	setUnit (const String &unit)
	Set the unit of the result. More...

void	setAttributes (const Record &attributes)
	Set the attributes of the result. More...

void	setConstant (Bool isConstant)
	Define if the result is constant (e.g. More...

void	setAggregate (Bool isAggregate)
	Define if the UDF is an aggregate function (usually used in GROUPBY). More...

Detailed Description

TaQL UDFs to calculate derived MS values.

Intended use:

Public interface

Review Status

Test programs:: tDerivedMSCal

Prerequisite

UDFBase

Synopsis

UDFMSCal defines UDFs (user defined functions) that can be used in TaQL to get derived MeasurementSet values hourangle, parallactic angle, azimuth/elevation, and local sidereal time. In this way such derived values appear to be ordinary TaQL functions.

The following functions can be defined:

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.
AZEL1 is the azimuth/elevation of ANTENNA1.
AZEL2 is the azimuth/elevation of ANTENNA2.
ITRF is the PHASE_DIR in ITRF coordinates (depends on TIME only).
UVW_J2000 is the UVW coordinates in J2000 (in meters)
STOKES makes it possible to convert Stokes of data, flag, or weight.
BASELINE is baseline selection using CASA syntax.
CORR is correlation selection using CASA syntax.
TIME is baseline selection using CASA syntax.
UVDIST is UV-distance selection using CASA syntax.
SPW is spectral window selection using CASA syntax.
FIELD is field selection using CASA syntax.
FEED is feed selection using CASA syntax.
ARRAY is array selection using CASA syntax.
SCAN is scan selection using CASA syntax.
STATE is state selection using CASA syntax.
OBS is observation selection using CASA syntax.
ANTNAME is the name of the given antenna.

The first functions have data type double and unit radian (except UVW). The HADEC, AZEL, and UVW functions return arrays while the others return scalars.
The STOKES function can have data type Complex, Double or Bool.
The latter functions are selection functions and return a Bool scalar.

This class 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).
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. However, if the subtable is not defined or empty or if the telescope name is unknown, the position of the first antenna is used as the array position.

The engine can also be used for a CASA Calibration Table. It understands how it references the MeasurementSets. Because calibration tables contain no ANTENNA2 columns, functions XX2 are the same as XX1.

Motivation

It makes it possible to do queries on these values without having to add columns for them.

Definition at line 117 of file UDFMSCal.h.

Member Enumeration Documentation

enum casacore::UDFMSCal::ColType

Define the possible 'column' types.

Enumerator
HA
HADEC
PA
LAST
AZEL
ITRF
UVWWVL
UVWWVLS
NEWUVW
NEWUVWWVL
NEWUVWWVLS
DELAY
STOKES
SELECTION
GETVALUE

Definition at line 121 of file UDFMSCal.h.

enum casacore::UDFMSCal::SelType

Define the possible selection types.

Enumerator
BASELINE
CORR
TIME
UVDIST
SPW
FIELD
FEED
ARRAY
SCAN
STATE
OBS

Definition at line 125 of file UDFMSCal.h.

Constructor & Destructor Documentation

casacore::UDFMSCal::UDFMSCal	(	ColType	,
		Int	arg
	)

Create object the given ColType and SelType.

casacore::UDFMSCal::UDFMSCal ( const String & funcName )

explicit

Create the object for getting a value from a column in a subtable.

casacore::UDFMSCal::UDFMSCal	(	const String &	funcName,
		const String &	subtabName,
		const String &	idColName,
		Int	arg = `0`
	)

casacore::UDFMSCal::UDFMSCal	(	const String &	funcName,
		const String &	subtabName,
		const String &	idColName,
		const String &	colName
	)

Member Function Documentation

virtual MArray<Bool> casacore::UDFMSCal::getArrayBool ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual MArray<DComplex> casacore::UDFMSCal::getArrayDComplex ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual MArray<Double> casacore::UDFMSCal::getArrayDouble ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual MArray<Int64> casacore::UDFMSCal::getArrayInt ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual MArray<String> casacore::UDFMSCal::getArrayString ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual Bool casacore::UDFMSCal::getBool ( const TableExprId & id )

virtual

Get the value.

Reimplemented from casacore::UDFBase.

virtual DComplex casacore::UDFMSCal::getDComplex ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual Double casacore::UDFMSCal::getDouble ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

virtual Int64 casacore::UDFMSCal::getInt ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

Int64 casacore::UDFMSCal::getRowNr ( const TableExprId & id )

private

Get the rownr in the subtable for GetValue.

If itsArg==1 it uses indirection using itsDDIds.

virtual String casacore::UDFMSCal::getString ( const TableExprId & id )

virtual

Reimplemented from casacore::UDFBase.

static UDFBase* casacore::UDFMSCal::makeAnt1Col ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAnt1Name ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAnt2Col ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAnt2Name ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeArray ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAZEL ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAZEL1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeAZEL2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeBaseline ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeCorr ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeDelay ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeDelay1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeDelay2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeFeed ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeField ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeFieldCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeHA ( const String & )

static

Function to create an object.

static UDFBase* casacore::UDFMSCal::makeHA1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeHA2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeHADEC ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeHADEC1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeHADEC2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeITRF ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeLAST ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeLAST1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeLAST2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeObs ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeObsCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makePA1 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makePA2 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makePolCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeProcCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeScan ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeSpw ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeSpwCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeState ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeStateCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeStokes ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeSubCol ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeTime ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeUVDist ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeUvwAPP ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeUvwJ2000 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeUvwWvl ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeUvwWvls ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeWvlAPP ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeWvlJ2000 ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeWvlsAPP ( const String & )

static

static UDFBase* casacore::UDFMSCal::makeWvlsJ2000 ( const String & )

static

virtual void casacore::UDFMSCal::recreateColumnObjects ( const Vector< uInt > & rownrs )

virtual

Let a derived class recreate its column objects in case a selection has to be applied.

Reimplemented from casacore::UDFBase.

virtual void casacore::UDFMSCal::setup	(	const Table &	,
		const TaQLStyle &
	)

virtual

Setup the object.

Implements casacore::UDFBase.

void casacore::UDFMSCal::setupDir ( TENShPtr & operand )

private

Setup direction conversion if a direction is explicitly given.

void casacore::UDFMSCal::setupGetValue	(	const Table &	table,
		std::vector< TENShPtr > &	operands
	)

private

Setup getting column values from a subtable.

void casacore::UDFMSCal::setupSelection	(	const Table &	table,
		std::vector< TENShPtr > &	operands
	)

private

Setup the baseline selection.

void casacore::UDFMSCal::setupStokes	(	const Table &	table,
		std::vector< TENShPtr > &	operands
	)

private

Setup the Stokes conversion.

void casacore::UDFMSCal::setupWvls	(	const Table &	table,
		std::vector< TENShPtr > &	operands,
		uInt	nargMax
	)

private

Setup getting the wavelength information.

Array<Double> casacore::UDFMSCal::toWvls ( const TableExprId & )

private

Convert the UVW coordinates to wavelengths for the full spectrum.

Member Data Documentation

Int casacore::UDFMSCal::itsArg

private

Definition at line 245 of file UDFMSCal.h.

TableExprNode casacore::UDFMSCal::itsDataNode

private

Definition at line 241 of file UDFMSCal.h.

Vector<Int> casacore::UDFMSCal::itsDDIds

private

Definition at line 257 of file UDFMSCal.h.

MSCalEngine casacore::UDFMSCal::itsEngine

private

Definition at line 239 of file UDFMSCal.h.

String casacore::UDFMSCal::itsFuncName

private

Definition at line 249 of file UDFMSCal.h.

String casacore::UDFMSCal::itsIdColName

private

Definition at line 251 of file UDFMSCal.h.

TableExprNode casacore::UDFMSCal::itsIdNode

private

Definition at line 242 of file UDFMSCal.h.

StokesConverter casacore::UDFMSCal::itsStokesConv

private

Definition at line 240 of file UDFMSCal.h.

String casacore::UDFMSCal::itsSubColName

private

Definition at line 252 of file UDFMSCal.h.

String casacore::UDFMSCal::itsSubTabName

private

Definition at line 250 of file UDFMSCal.h.

Array<Double> casacore::UDFMSCal::itsTmpUvwWvl

private

Definition at line 256 of file UDFMSCal.h.

Vector<Double> casacore::UDFMSCal::itsTmpVector

private

Definition at line 255 of file UDFMSCal.h.

ColType casacore::UDFMSCal::itsType

private

Definition at line 244 of file UDFMSCal.h.

ArrayColumn<Double> casacore::UDFMSCal::itsUvwCol

private

Definition at line 243 of file UDFMSCal.h.

vector<Double> casacore::UDFMSCal::itsWavel

private

Definition at line 258 of file UDFMSCal.h.

vector<Vector<Double> > casacore::UDFMSCal::itsWavels

private

Definition at line 259 of file UDFMSCal.h.

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

casa/casacore/derivedmscal/DerivedMC/UDFMSCal.h

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Motivation

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation