msmoments_pg.msmoments_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 msmoments_pg.py.

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Constructor & Destructor Documentation

def msmoments_pg.msmoments_pg_.__init__

(

self

)

Definition at line 21 of file msmoments_pg.py.

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Member Function Documentation

def msmoments_pg.msmoments_pg_.__call__	(		self,
			infile = None,
			moments = None,
			antenna = None,
			field = None,
			spw = None,
			includemask = None,
			excludemask = None,
			outfile = None,
			overwrite = None,
			async = None
	)

Compute moments from an MS
The spectral moment distributions at each row in input MS are
determined. Input MS must have FLOAT_DATA column, i.e. 
autocorrelation data.  
See the cookbook and User Reference Manual for
mathematical details.

The main control of the calculation is given by parameter
moments:

moments=-1  - mean value of the spectrum
moments=0   - integrated value of the spectrum
moments=1   - intensity weighted coordinate;traditionally used to get 
      'velocity fields'
moments=2   - intensity weighted dispersion of the coordinate; traditionally
      used to get "velocity dispersion"
moments=3   - median of I
moments=4   - median coordinate
moments=5   - standard deviation about the mean of the spectrum
moments=6   - root mean square of the spectrum
moments=7   - absolute mean deviation of the spectrum
moments=8   - maximum value of the spectrum
moments=9   - coordinate of the maximum value of the spectrum
moments=10  - minimum value of the spectrum
moments=11  - coordinate of the minimum value of the spectrum

Note that includemask and excludemask cannot set simultaneously. 

Keyword arguments:
infile -- Name of input MS data
default: none; example: infile="OrionS_rawACSmod"
moments -- List of moments you would like to compute
default: 0 (integrated spectrum);example: moments=[0,1]
see list above
antenna -- antenna name or id that the user wants to compute moments
default: '' (all antennae)
field -- field name or id that the user wants to compute moments
default: '' (all fields)
spw -- spectral window id that the user wants to compute moments
default: '' (all spectral windows)

includemask -- List of masks to include
default: [-1] (include all channels); example=[2,100]
excludemask -- List of masks to exclude
default: [-1] (don't exclude channels); example=[100,200]
outfile -- Output MS file name (or root for multiple moments)
default: '' (input+auto-determined suffix);example: outfile='source_moment'
overwrite -- Overwrite existing output files
default: false

Example for finding the 1-momment, intensity-weighted
coordinate, often used for finding velocity fields.
msmoments( infile='mydata', moment=1, outfile='velocityfields' )

Definition at line 26 of file msmoments_pg.py.

References vla_uvfits_line_sf.verify.

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Member Data Documentation

msmoments_pg.msmoments_pg_.__bases__ [private]

Definition at line 22 of file msmoments_pg.py.

msmoments_pg.msmoments_pg_.__doc__ [private]

Definition at line 23 of file msmoments_pg.py.

string msmoments_pg.msmoments_pg_.__name__ [static, private]

Definition at line 19 of file msmoments_pg.py.

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

• msmoments_pg.py