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NRAO Home > CASA > CASA Cookbook and User Reference Manual |
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8.2.1.2 sdsmooth
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 the spectrum before and after smoothing.
See the sdcal description for note on GBT raw SDFITS format data.
R3.4 New Features:
Channel binning is available by setting kernel=’regrid’.
More information about CASA may be found at the
CASA web page
Copyright © 2010 Associated Universities Inc., Washington, D.C.
This code is available under the terms of the GNU General Public Lincense
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