casa::DataSampling Class Reference

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

#include <DataSampling.h>

Inheritance diagram for casa::DataSampling:

List of all members.

Public Member Functions
	DataSampling ()
	DataSampling (const DataSampling &other)
	Copy constructor.
DataSampling &	operator= (const DataSampling &other)
	Assignment operator.
virtual	~DataSampling ()
const Array< Float > &	getDX () const
const Array< Float > &	getData () const
const Array< Float > &	getSigma () const
const Array< Float > &	getPRF () const
String	getIDLScript () const
Protected Member Functions
void	ok ()
Protected Attributes
Array< Float >	dx_p
Array< Float >	data_p
Array< Float >	sigma_p
Array< Float >	prf_p
Int	lastRow
String	IDLScript_p

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Detailed Description

Provides sampling of data for esimation algorithms.

Intended use:

Public interface

Etymology

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

• The Point Response 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 PagedImage<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.

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Constructor & Destructor Documentation

casa::DataSampling::DataSampling

(

)

casa::DataSampling::DataSampling

(

const DataSampling &

other

)

Copy constructor.

virtual casa::DataSampling::~DataSampling

(

)

[virtual]

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Member Function Documentation

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

(

)

const

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

(

)

const

String casa::DataSampling::getIDLScript

(

)

const [inline]

Definition at line 125 of file DataSampling.h.

References IDLScript_p.

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

(

)

const

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

(

)

const

void casa::DataSampling::ok

(

)

[protected]

Reimplemented in casa::ImageDataSampling, casa::SDDataSampling, and casa::SynDataSampling.

DataSampling& casa::DataSampling::operator=

(

const DataSampling &

other

)

Assignment operator.

Reimplemented in casa::ImageDataSampling, casa::SDDataSampling, and casa::SynDataSampling.

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Member Data Documentation

Array<Float> casa::DataSampling::data_p [protected]

Definition at line 130 of file DataSampling.h.

Array<Float> casa::DataSampling::dx_p [protected]

Definition at line 125 of file DataSampling.h.

String casa::DataSampling::IDLScript_p [protected]

Definition at line 136 of file DataSampling.h.

Referenced by getIDLScript().

Int casa::DataSampling::lastRow [protected]

Definition at line 134 of file DataSampling.h.

Array<Float> casa::DataSampling::prf_p [protected]

Definition at line 132 of file DataSampling.h.

Array<Float> casa::DataSampling::sigma_p [protected]

Definition at line 131 of file DataSampling.h.

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

• code/synthesis/DataSampling/DataSampling.h