2.3.1.0 imager.setsdoptions

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imager.setsdoptions - Function

2.3.1 Set some options for single dish processing
Description

Various less-often-used options for single dish processing can be set.

scale: The overall scale of the single dish data is multiplied by this factor.
weight: The weight given to the single dish data in the imaging is multiplied by this factor.

convsupport This parameter can be used to change the support used in gridding single dish data in imaging. If ’PB’ or ’pb’ is used as the ’convtype’ in setoptions this parameter is ignored as the support is defined by the primary beam. The deafult of -1 mans 1 as convsupport is used for ’box’ convolution function and 3 is used for ’SF’ convolution function. pointingcolumntouse This parameter is NOT to be changed under normal circumstances. This is to be used by those who know what they are doing and want to try to use different columns in the POINTING table especially if they believe their dish direction is wrong. And if any of the _OFFSET columns is used do not expect to be able to use a different frame in the image setup in defineimage. Possible values are DIRECTION, TARGET, ENCODER, POINTING_OFFSET, SOURCE_OFFSET

Arguments


Inputs
scale	Scaling applied to single dish data
	allowed:	double
	Default:	1.0
weight	Weights applied to single dish data
	allowed:	double
	Default:	1.0
convsupport	number of pixel for convolution support
	allowed:	int
	Default:	-1
pointingcolumntouse	Which Pointing Table column to use to get direction
	allowed:	string
	Default:	DIRECTION

Returns
bool

Example

- im.setsdoptions(scale=1.0, weight=1.0, convsupport=5)

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