ObitUVWeight.c File Reference

ObitUVWeight class function definitions. More...

#include "ObitUVWeight.h"

Defines
#define	DG2RAD   G_PI / 180.0
	Degrees to radians factor.
#define	RAD2DG   180.0 / G_PI
	Radians to degrees factor.
#define	ObitUVWeightUnref(in)   ObitUnref (in)
	Macro to unreference (and possibly destroy) an ObitUVWeight returns a ObitUVWeight*.
#define	ObitUVWeightRef(in)   ObitRef (in)
	Macro to reference (update reference count) an ObitUVWeight.
#define	ObitUVWeightIsA(in)   ObitIsA (in, ObitUVWeightGetClass())
	Macro to determine if an object is the member of this or a derived class.
Functions
void	ObitUVWeightInit (gpointer in)
	Private: Initialize newly instantiated object.
void	ObitUVWeightClear (gpointer in)
	Private: Deallocate members.
void	ObitUVWeightInput (ObitUVWeight *in, ObitUV *uvdata, ObitErr *err)
	Private: Get input parameters from uvdata.
void	ObitUVWeightReadUV (ObitUVWeight *in, ObitUV *UVin, ObitErr *err)
	Private: Read uv data accumulating to grid.
void	ObitUVWeightWtUV (ObitUVWeight *in, ObitUV *UVin, ObitErr *err)
	Private: Reweight uv data accumulating to grids.
ObitUVWeight *	newObitUVWeight (gchar *name)
	Public: Constructor.
gconstpointer	ObitUVWeightGetClass (void)
	Public: ClassInfo pointer.
void	ObitUVWeightData (ObitUV *uvdata, ObitErr *err)
	Public: Determine weighting and correct an ObitUV.
void	ObitUVWeightClassInit (void)
	Public: Class initializer.

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Detailed Description

ObitUVWeight class function definitions.

This class is derived from the Obit base class.

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Define Documentation

#define DG2RAD   G_PI / 180.0

Degrees to radians factor.

#define ObitUVWeightIsA (  in   )     ObitIsA (in, ObitUVWeightGetClass())

Macro to determine if an object is the member of this or a derived class. Returns TRUE if a member, else FALSE in = object to reference

#define ObitUVWeightRef (  in   )     ObitRef (in)

Macro to reference (update reference count) an ObitUVWeight. returns a ObitUVWeight*. in = object to reference

#define ObitUVWeightUnref (  in   )     ObitUnref (in)

Macro to unreference (and possibly destroy) an ObitUVWeight returns a ObitUVWeight*. in = object to unreference

#define RAD2DG   180.0 / G_PI

Radians to degrees factor.

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Function Documentation

ObitUVWeight* newObitUVWeight (  gchar *  name  )

Public: Constructor. Initializes class if needed on first call. Parameters: name  An optional name for the object. Returns: the new object.

void ObitUVWeightClassInit (  void   )

Public: Class initializer.

void ObitUVWeightClear (  gpointer  inn  )

Private: Deallocate members. Does (recursive) deallocation of parent class members. For some reason this wasn't build into the GType class. Parameters: inn  Pointer to the object to deallocate. Actually it should be an ObitUVWeight* cast to an Obit*.

void ObitUVWeightData (  ObitUV *  uvdata, ObitErr *  err )

Public: Determine weighting and correct an ObitUV. Then the data weights are modified by the weighting function. The control parameters are attached to the ObitInfoList member info on uvdata. See ObitUVWeight class documentation for details

gconstpointer ObitUVWeightGetClass (  void   )

Public: ClassInfo pointer. Returns: pointer to the class structure.

void ObitUVWeightInit (  gpointer  inn  )

Private: Initialize newly instantiated object. Parent classes portions are (recursively) initialized first Parameters: inn  Pointer to the object to initialize.

void ObitUVWeightInput (  ObitUVWeight *  in, ObitUV *  uvdata, ObitErr *  err )

Private: Get input parameters from uvdata. The control parameters are attached to the ObitInfoList member info on uvdata. See ObitUVWeight Class documentation for details. Parameters: uvdata  ObitUV whose data is to be weighted. err  ObitErr stack for reporting problems.

void ObitUVWeightReadUV (  ObitUVWeight *  in, ObitUV *  UVin, ObitErr *  err )

Private: Read uv data accumulating to grid. Buffering of data will use the buffers as defined on UVin ("nVisPIO" in info member). The UVin object will be closed at the termination of this routine. Requires setup by #ObitUVWeightCreate. The gridding information should have been stored in the ObitInfoList on in: "UVTaper" OBIT_float scalar = UV taper width in kilowavelengths. Default = no taper. "Guardband" OBIT_float scalar = maximum fraction of U or v range allowed in grid. Default = 0.4. "MaxBaseline" OBIT_float scalar = maximum baseline length in wavelengths. Default = 1.0e15. "startChann" OBIT_int scalar = first channel (1-rel) in uv data to grid. Default = 1. "numberChann" OBIT_int scalar = number of channels in uv data to grid. Default = all. Parameters: in  Object to initialize UVin  Uv data object to be gridded. Should be the same as passed to previous call to #ObitUVWeightSetup for input in. err  ObitErr stack for reporting problems.

void ObitUVWeightWtUV (  ObitUVWeight *  in, ObitUV *  UVin, ObitErr *  err )

Private: Reweight uv data accumulating to grids. Parameters: in  Weighting object. UVin  Uv data object to be corrected. err  ObitErr stack for reporting problems.

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