casa::DataSampling Class Reference

Provides sampling of data for esimation algorithms. More...

#include <DataSampling.h>

Inheritance diagram for casa::DataSampling:

Public Member Functions
	DataSampling ()
	DataSampling (const DataSampling &other)
	Copy constructor. More...
DataSampling &	operator= (const DataSampling &other)
	Assignment operator. More...
virtual	~DataSampling ()
const casacore::Array < casacore::Float > &	getDX () const
const casacore::Array < casacore::Float > &	getData () const
const casacore::Array < casacore::Float > &	getSigma () const
const casacore::Array < casacore::Float > &	getPRF () const
casacore::String	getIDLScript () const

Protected Member Functions
void	ok ()

Protected Attributes
casacore::Array< casacore::Float >	dx_p
casacore::Array< casacore::Float >	data_p
casacore::Array< casacore::Float >	sigma_p
casacore::Array< casacore::Float >	prf_p
casacore::Int	lastRow
casacore::String	IDLScript_p

Detailed Description

Provides sampling of data for esimation algorithms.

Intended use:

Public interface

Etymology

Samples casacore::Data as needed for various estimation algorithms

Synopsis

Esimation algorithms such as the Pixon method need sampled and unitless versions of the data. This class is a base class for such sampling classes. Derived examples are for single dish imaging (SDDataSampling) and image deconvolution (ImageDataSampling).

THe calculated quantities are

• The casacore::Data Sampling casacore::Function: the coordinates of the sampled points in some space
• The casacore::Data: the actual data points corresponding to the casacore::Data Sampling Function
• The Error: the error per data point.

• The Point Response casacore::Function in that space

  The DataSampling object is constructed with the data sources as arguments, and then the calculate method is used to find the above quantities. The estimation method may then retrieve the data quantities as needed.

  Example

  Define an estimator PixonProcessor pp;

  Get the model image casacore::PagedImage<casacore::Float> modelImage(modelName);

  Set up the data sampling VPSkyJones vp(ms, true, parAngleInc, squintType); SDDataSampling ds(ms, vp);

  Calculating data sampling, etc.

  ds.calculate(modelImage);

  Finding pixon solution pp.calculate(ds);

  Motivation

  Define an interface to allow efficient processing of chunks of data

Definition at line 104 of file DataSampling.h.

Constructor & Destructor Documentation

casa::DataSampling::DataSampling

(

)

casa::DataSampling::DataSampling

(

const DataSampling &

other

)

Copy constructor.

virtual casa::DataSampling::~DataSampling ( )

virtual

Member Function Documentation

const casacore::Array<casacore::Float>& casa::DataSampling::getData

(

)

const

const casacore::Array<casacore::Float>& casa::DataSampling::getDX

(

)

const

casacore::String casa::DataSampling::getIDLScript ( ) const

inline

Definition at line 125 of file DataSampling.h.

References IDLScript_p.

const casacore::Array<casacore::Float>& casa::DataSampling::getPRF

(

)

const

const casacore::Array<casacore::Float>& casa::DataSampling::getSigma

(

)

const

void casa::DataSampling::ok ( )

protected

DataSampling& casa::DataSampling::operator=

(

const DataSampling &

other

)

Assignment operator.

Member Data Documentation

casacore::Array<casacore::Float> casa::DataSampling::data_p

protected

Definition at line 130 of file DataSampling.h.

casacore::Array<casacore::Float> casa::DataSampling::dx_p

protected

Definition at line 125 of file DataSampling.h.

casacore::String casa::DataSampling::IDLScript_p

protected

Definition at line 136 of file DataSampling.h.

Referenced by getIDLScript().

casacore::Int casa::DataSampling::lastRow

protected

Definition at line 134 of file DataSampling.h.

casacore::Array<casacore::Float> casa::DataSampling::prf_p

protected

Definition at line 132 of file DataSampling.h.

casacore::Array<casacore::Float> casa::DataSampling::sigma_p

protected

Definition at line 131 of file DataSampling.h.

---

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

• casa/code/synthesis/DataSampling/DataSampling.h