task_smoothcal.py

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import os
from taskinit import *

def smoothcal(vis,tablein,caltable,field,smoothtype,smoothtime):
        """ Smooth calibration solution(s) derived from one or more sources:

        Keyword arguments:
        vis -- Name of input visibility file (MS)
                default: none; example: vis='ngc5921.ms'
        tablein -- Input calibration table (any type)
                default: none; example: tablein='ngc5921.gcal'
        caltable -- Output calibration table (smoothed)
                default: none; example: caltable='ngc5921_smooth.gcal'
        field -- subset of sources to select
                default: '' means all; example: field='0319_415_1 3C286'
        smoothtype -- The smoothing filter to be used
                default: 'median'; example: smoothtype='mean'
                Options: 'median','mean'
        smoothtime -- Smoothing filter time (sec)
                default: 60.0; example: smoothtime=10.
        """

        #Python script
        try:
                casalog.origin('smoothcal')
                if ((type(vis)==str) & (os.path.exists(vis))):
                        cb.open(filename=vis,compress=False,addcorr=False,addmodel=False)
                               
                else:
                        raise Exception, 'Visibility data set not found - please verify the name'

                cb.smooth(tablein=tablein,tableout=caltable,field=field,smoothtype=smoothtype,smoothtime=smoothtime)
                cb.close()

        except Exception, instance:
                print '*** Error ***',instance
                cb.close()
                raise Exception, instance