sdsmooth Namespace Reference

Functions
def	sdsmooth

---

Function Documentation

def sdsmooth.sdsmooth	(		infile = '',
			antenna = 0,
			scanaverage = False,
			scanlist = [],
			field = '',
			iflist = [],
			pollist = [],
			kernel = 'hanning',
			kwidth = 5,
			chanwidth = '5',
			verify = False,
			outfile = '',
			outform = 'ASAP',
			overwrite = False,
			plotlevel = 0
	)

ASAP SD task: do smoothing of spectra

Keyword arguments:
infile -- name of input SD dataset
antenna -- antenna name or id (only effective for MS input). 
scanaverage -- average integrations within scans
        options: (bool) True,False
        default: False
        example: if True, this happens in read-in
                 For GBT, set False!
scanlist -- list of scan numbers to process
        default: [] (use all scans)
        example: [21,22,23,24]
        this selection is in addition to field, iflist, and pollist
field -- selection string for selecting scans by name
        default: '' (no name selection)
        example: 'FLS3a*'
        this selection is in addition to scanlist, iflist,pollist
iflist -- list of IF id numbers to select
        default: [] (use all IFs)
        example: [15]
        this selection is in addition to scanlist, field, and pollist
pollist -- list of polarization id numbers to select
        default: [] (use all polarizations)
        example: [1]
        this selection is in addition to scanlist, field, and iflist
kernel -- type of spectral smoothing
        options: 'hanning','gaussian','boxcar','regrid'
        default: 'hanning'

    >>>kernel expandable parameter
         kwidth -- width of spectral smoothing kernel
                 options: (int) in channels 
                 default: 5
                 example: 5 or 10 seem to be popular for boxcar
                          ignored for hanning (fixed at 5 chans)
                          (0 will turn off gaussian or boxcar)
         chanwidth -- channel width of regridded spectra
                 default: '5' (in channels)
                 example: '500MHz', '0.2km/s'

verify -- verify the results of smoothing
        options: (bool) True,False
        default: False
        WARNING: Currently this just asks whether you accept
                 the displayed smoothing and if not, continues
                 without smoothing.
        Note: verification is not yet available for kernel='regrid'
outfile -- Name of output ASAP format(scantable) file
        default: '' (<infile>_sm)
outform -- format of output file
        options: 'ASCII','SDFITS','MS','ASAP'
        default: 'ASAP'
        example: the ASAP format is easiest for further sd
                 processing; use MS for CASA imaging.
                 If ASCII, then will append some stuff to
                 the outfile name
overwrite -- overwrite the output file if already exists
        options: (bool) True,False
        default: False
        WARNING: if outform='ASCII', this parameter is ignored
plotlevel -- control for plotting of results
        options: (int) 0=none, 1=some, 2=more, <0=hardcopy
        default: 0 (no plotting)
        example: plotlevel<0 as abs(plotlevel), e.g.
                 -1 => hardcopy of final plot (will be named
                 <outfile>_smspec.eps)


DESCRIPTION:

Task sdsmooth performs smoothing of the single-dish spectra.
Set plotlevel >= 1 to plot spectrum before and after smoothing.

WARNING for the GBT raw SDFITS format data as input:
SDtasks are able to handle GBT raw SDFITS format data since the 
data filler is available. However, the functionality is not well 
tested yet, so that there may be unknown bugs.  

Definition at line 13 of file sdsmooth.py.

References task_sdsmooth.sdsmooth(), and vla_uvfits_line_sf.verify.