uvcontsub3_pg.uvcontsub3_pg_ Class Reference

List of all members.

Public Member Functions
def	__init__
def	__call__
Private Attributes
	__bases__
	__doc__
Static Private Attributes
string	__name__

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Detailed Description

Definition at line 18 of file uvcontsub3_pg.py.

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Constructor & Destructor Documentation

def uvcontsub3_pg.uvcontsub3_pg_.__init__

(

self

)

Definition at line 21 of file uvcontsub3_pg.py.

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Member Function Documentation

def uvcontsub3_pg.uvcontsub3_pg_.__call__	(		self,
			vis = None,
			fitspw = None,
			combine = None,
			fitorder = None,
			field = None,
			spw = None,
			scan = None,
			intent = None,
			correlation = None,
			observation = None,
			async = None
	)

An experimental clone of uvcontsub
  
uvcontsub3 is an experimental clone of uvcontsub with the goal of taking
less time and temporary disk space.

Continuum fitting and subtraction in the uv plane:

This task estimates the continuum emission by fitting polynomials to
the real and imaginary parts of the spectral windows and channels
selected by fitspw.  This fit represents a model of the continuum in 
all channels.

The fitted continuum spectrum is subtracted from all channels 
selected in spw, and the result (presumably only line emission)
is stored in a new MS (vis + ".contsub").
It will read from the CORRECTED_DATA column of vis if it is present,
or DATA if it is not.  Whichever column is read is presumed to have
already been calibrated.

Keyword arguments:
vis -- Name of input visibility file
default: none; example: vis='ngc5921.ms'

fitspw -- Selection of spectral windows and channels to use in the
  fit for the continuum, using general spw:chan syntax.
  See the note under combine.
default: '' (all)
example: fitspw='0:5~30;40~55'

combine -- Let the continuum estimation span multiple spectral windows.
   default = '' (Make separate estimates for each spw.)
   combine = 'spw': Necessary when one or more of the spws are
                    completely blanketed by lines, so the estimate
                    must be made in different spws.

fitorder -- Polynomial order for the fits of the continuum w.r.t.
    frequency.  fitorders > 1 are strongly discouraged
    because high order polynomials have more flexibility, may
    absorb line emission, and tend go wild at the edges of
    fitspw, which is not what you want.

default: 0 (constant); example: fitorder=1

field -- Field selection for continuum estimation and subtraction.
 The estimation and subtraction is done for each selected field
 in turn.  (Run listobs to get lists of the ID and names.)
       default: ''=all fields.  If the field string is a non-negative
        integer, it is assumed to be a field index
        otherwise, it is assumed to be a field name
       field='0~2'; field ids 0,1,2
       field='0,4,5~7'; field ids 0,4,5,6,7
       field='3C286,3C295'; fields named 3C286 and 3C295
       field = '3,4C*'; field id 3, all names starting with 4C

spw -- Select spectral windows for the output.
       default: ''=all spectral windows
       N.B. uvcontsub3 does not yet support exclusion by channels for
    the output.  Meanwhile, use split to further reduce the size
    of the output MS if desired.
       spw='0~2,4'; spectral windows 0,1,2,4
       spw='<2';  spectral windows less than 2 (i.e. 0,1)

scan -- Scan number range
    default: ''=all

intent -- Select by scan intent (state).  Case sensitive.
    default: '' = all
    Examples:
    intent = 'CALIBRATE_ATMOSPHERE_REFERENCE'
    intent = 'calibrate_atmosphere_reference'.upper() # same as above
    # Select states that include one or both of CALIBRATE_WVR.REFERENCE
    # or OBSERVE_TARGET_ON_SOURCE.
    intent = 'CALIBRATE_WVR.REFERENCE, OBSERVE_TARGET_ON_SOURCE'

correlation -- Select correlations, e.g. 'rr, ll' or ['XY', 'YX'].
       default '' (all).

observation -- Select by observation ID(s).
       default: '' = all

Definition at line 26 of file uvcontsub3_pg.py.

References vla_uvfits_line_sf.verify.

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Member Data Documentation

uvcontsub3_pg.uvcontsub3_pg_.__bases__ [private]

Definition at line 22 of file uvcontsub3_pg.py.

uvcontsub3_pg.uvcontsub3_pg_.__doc__ [private]

Definition at line 23 of file uvcontsub3_pg.py.

string uvcontsub3_pg.uvcontsub3_pg_.__name__ [static, private]

Definition at line 19 of file uvcontsub3_pg.py.

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

• uvcontsub3_pg.py