casa  5.7.0-16
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Public Member Functions | Protected Attributes | List of all members
casacore::TableExprGroupVariancesArrayDouble Class Reference

Aggregate class determining the variance of array values in a group. More...

#include <ExprGroupAggrFuncArray.h>

Inheritance diagram for casacore::TableExprGroupVariancesArrayDouble:
casacore::TableExprGroupFuncArrayDouble casacore::TableExprGroupFuncBase casacore::TableExprGroupStdDevsArrayDouble

Public Member Functions

 TableExprGroupVariancesArrayDouble (TableExprNodeRep *node, uInt ddof)
 
virtual ~TableExprGroupVariancesArrayDouble ()
 
virtual void apply (const TableExprId &id)
 Get the operand's value for the given row and apply it to the aggregation. More...
 
virtual void finish ()
 If needed, finish the aggregation. More...
 
- Public Member Functions inherited from casacore::TableExprGroupFuncArrayDouble
 TableExprGroupFuncArrayDouble (TableExprNodeRep *node)
 
virtual ~TableExprGroupFuncArrayDouble ()
 
virtual MArray< DoublegetArrayDouble (const vector< TableExprId > &)
 
- Public Member Functions inherited from casacore::TableExprGroupFuncBase
 TableExprGroupFuncBase (TableExprNodeRep *node)
 Construct from the TaQL aggregation node. More...
 
virtual ~TableExprGroupFuncBase ()
 
virtual Bool isLazy () const
 Does the aggregate function use lazy semantics? The default implementation returns False. More...
 
uInt seqnr () const
 Get the function's sequence nr. More...
 
void setSeqnr (uInt seqnr)
 Set the function's sequence nr. More...
 
virtual CountedPtr< vector
< TableExprId > > 
getIds () const
 Get the assembled TableExprIds of a group. More...
 
virtual Bool getBool (const vector< TableExprId > &=vector< TableExprId >())
 Get the aggregated value. More...
 
virtual Int64 getInt (const vector< TableExprId > &=vector< TableExprId >())
 
virtual Double getDouble (const vector< TableExprId > &=vector< TableExprId >())
 
virtual DComplex getDComplex (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MVTime getDate (const vector< TableExprId > &=vector< TableExprId >())
 
virtual String getString (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MArray< BoolgetArrayBool (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MArray< Int64getArrayInt (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MArray< DComplex > getArrayDComplex (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MArray< MVTimegetArrayDate (const vector< TableExprId > &=vector< TableExprId >())
 
virtual MArray< StringgetArrayString (const vector< TableExprId > &=vector< TableExprId >())
 

Protected Attributes

uInt itsDdof
 
Array< Int64itsNr
 
Array< DoubleitsCurMean
 
- Protected Attributes inherited from casacore::TableExprGroupFuncArrayDouble
MArray< DoubleitsValue
 
- Protected Attributes inherited from casacore::TableExprGroupFuncBase
TableExprNodeRepitsNode
 
TableExprNodeRepitsOperand
 
uInt itsSeqnr
 

Additional Inherited Members

- Protected Member Functions inherited from casacore::TableExprGroupFuncArrayDouble
Bool checkShape (const MArrayBase &arr, const String &func)
 If not empty, check if the shape matches that of itsValue. More...
 

Detailed Description

Aggregate class determining the variance of array values in a group.

Intended use:

Internal

Review Status

Test programs:
tExprGroup

Synopsis

Aggregate class determining the variance of array values in a group. It uses a running algorithm (see en.wikipedia.org/wiki/Algorithms_for_calculating_variance)

Definition at line 791 of file ExprGroupAggrFuncArray.h.

Constructor & Destructor Documentation

casacore::TableExprGroupVariancesArrayDouble::TableExprGroupVariancesArrayDouble ( TableExprNodeRep node,
uInt  ddof 
)
virtual casacore::TableExprGroupVariancesArrayDouble::~TableExprGroupVariancesArrayDouble ( )
virtual

Member Function Documentation

virtual void casacore::TableExprGroupVariancesArrayDouble::apply ( const TableExprId id)
virtual

Get the operand's value for the given row and apply it to the aggregation.

This function should not be called for lazy classes.

Implements casacore::TableExprGroupFuncBase.

virtual void casacore::TableExprGroupVariancesArrayDouble::finish ( )
virtual

If needed, finish the aggregation.

By default nothing is done.

Reimplemented from casacore::TableExprGroupFuncBase.

Reimplemented in casacore::TableExprGroupStdDevsArrayDouble.

Member Data Documentation

Array<Double> casacore::TableExprGroupVariancesArrayDouble::itsCurMean
protected

Definition at line 801 of file ExprGroupAggrFuncArray.h.

uInt casacore::TableExprGroupVariancesArrayDouble::itsDdof
protected

Definition at line 799 of file ExprGroupAggrFuncArray.h.

Array<Int64> casacore::TableExprGroupVariancesArrayDouble::itsNr
protected

Definition at line 800 of file ExprGroupAggrFuncArray.h.


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