Image Sky Model implementing the MultiScale, MultiField Clean algorithm. More...

#include <MFMSCleanImageSkyModel.h>

Inheritance diagram for casa::MFMSCleanImageSkyModel:

Public Member Functions
	MFMSCleanImageSkyModel ()
	Create a MFMSCleanImageSkyModel with 4 scales, stoplargenegatives == 2, stoppointmode==-1.
	MFMSCleanImageSkyModel (const Int nscales, const Int stoplargenegatives=2, const Int stoppointmode=-1, const Float smallScaleBias=0.6)
	Create a MFMSCleanImageSkyModel with nScales, we figure out what they are Also: stoplargenegatives controls if we stop the cycle when the largest component goes negative; stoppointmode controls how many of the smallest component must be hit consecutively before we stop that cycle (-1 ==> don't stop)
	MFMSCleanImageSkyModel (const Vector< Float > &useScaleSize, const Int stoplargenegatives=2, const Int stoppointmode=-1, const Float smallScaleBias=0.6)
	Create a MFMSCleanImageSkyModel, you provide the scale sizes, IN PIXELS for example: Vector<Float> scales(4); scales(0) = 0.0; scales(1) = 3.0; scales(2) = 10.0; scales(3) = 30.0;.
	~MFMSCleanImageSkyModel ()
	destructor
virtual Bool	solve (SkyEquation &me)
	Solve for this SkyModel.
Private Types
enum	Scale_Method { NSCALES, USERVECTOR }
	set the scales void setScales(LatticeCleaner<Float>& cleaner); More...
Private Member Functions
void	getScales ()
	Chattily get the scales into userScaleSizes_p, doing some calculation if necessary.
Private Attributes
Scale_Method	method_p
uInt	nscales_p
Vector< Float >	userScaleSizes_p
LatticeCleanProgress *	progress_p
Int	stopLargeNegatives_p
	parameter to stop the cycle (for the first N cycles) if you get a negative on the largest scale; To disable, use < 0
Int	stopPointMode_p
	parameter which stops the cycle if you hit the smallest scale this many consecutive times; if < 0, don't stop for this
Float	smallScaleBias_p

Detailed Description

Image Sky Model implementing the MultiScale, MultiField Clean algorithm.

Intended use:

Public interface

Prerequisite

Etymology

MFMSCleanImageSkyModel implements the MultiScale, MultiField Clean algorithm. It is derived from MFCleanImageSkyModel .

Synopsis

The MF Clean is an FFT-based clean algorithm. Cleaning is split into major and minor cycles. In a minor cycle, the image is cleaned using an approximate PSF and the MultiScale clean algorithm. In the major cycle, a fully correct subtraction the of cleanned emission from the visibilities on a pointing-by-pointing bassis is performed.

Masking is optionally performed using a mask image: only points where the mask is non-zero are cleaned. If no mask is specified all points in the inner quarter of the image are cleaned.

Example

See the example for SkyModel .

Motivation

Definition at line 81 of file MFMSCleanImageSkyModel.h.

Member Enumeration Documentation

enum casa::MFMSCleanImageSkyModel::Scale_Method [private]

set the scales void setScales(LatticeCleaner<Float>& cleaner);

Enumerator:

NSCALES
USERVECTOR

Definition at line 119 of file MFMSCleanImageSkyModel.h.

Constructor & Destructor Documentation

casa::MFMSCleanImageSkyModel::MFMSCleanImageSkyModel ( )

Create a MFMSCleanImageSkyModel with 4 scales, stoplargenegatives == 2, stoppointmode==-1.

casa::MFMSCleanImageSkyModel::MFMSCleanImageSkyModel	(	const Int	nscales,
		const Int	stoplargenegatives = `2`,
		const Int	stoppointmode = `-1`,
		const Float	smallScaleBias = `0.6`
	)

Create a MFMSCleanImageSkyModel with nScales, we figure out what they are Also: stoplargenegatives controls if we stop the cycle when the largest component goes negative; stoppointmode controls how many of the smallest component must be hit consecutively before we stop that cycle (-1 ==> don't stop)

casa::MFMSCleanImageSkyModel::MFMSCleanImageSkyModel	(	const Vector< Float > &	useScaleSize,
		const Int	stoplargenegatives = `2`,
		const Int	stoppointmode = `-1`,
		const Float	smallScaleBias = `0.6`
	)

Create a MFMSCleanImageSkyModel, you provide the scale sizes, IN PIXELS for example: Vector<Float> scales(4); scales(0) = 0.0; scales(1) = 3.0; scales(2) = 10.0; scales(3) = 30.0;.

casa::MFMSCleanImageSkyModel::~MFMSCleanImageSkyModel ( )

destructor