task_importuvfits.py

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import os
from taskinit import *

def importuvfits(fitsfile, vis, antnamescheme=None):
    """

    Convert a UVFITS file to a CASA visibility data set (MS):

    Keyword arguments:
    fitsfile -- Name of input UV FITS file
        default = none; example='3C273XC1.fits'
    vis -- Name of output visibility file (MS)
        default = none; example: vis='3C273XC1.ms'
    antnamescheme -- Naming scheme for VLA/JVLA/CARMA antennas
        default = old;
        old: Antenna name is a number, '04'
             This option exists for backwards compatibility
             but can lead to ambiguous results when antenna
             indices are used for data selection.
        new: Antenna name is not a number, 'VA04' or 'EA04'
             With this scheme, data selection via
             antenna names and indices is non-ambiguous.
    async --  Run asynchronously
        default = false; do not run asychronously


    """

    #Python script

    ok = True
    try:
        casalog.origin('importuvfits')
        casalog.post("")
        myms = mstool()
        myms.fromfits(vis, fitsfile, antnamescheme=antnamescheme)
        myms.close()
    except Exception, instance: 
        ok = False
        casalog.post("Failed to import %s to %s" % (fitsfile, vis))

    if not ok:
        return;

    # Write the args to HISTORY.
    try:
        param_names = \
         importuvfits.func_code.co_varnames[:importuvfits.func_code.co_argcount]
        param_vals = [eval(p) for p in param_names]
        ok &= write_history(myms, vis, 'importuvfits', param_names, 
                            param_vals, casalog)
    except Exception, instance:
        casalog.post("Failed to updated HISTORY table", 'WARN')

    #if not ok:
    #    return;

    #sleep(1)
    # save original flagversion
    #try:
        #aflocal = aftool()
        #ok &= aflocal.open(vis)
        #ok &= aflocal.saveflagversion('Original',
                       #comment='Original flags at import into CASA',
                       #merge='replace')
        #ok &= aflocal.done()
    #except Exception, instance: 
        #casalog.post('Failed to save original flags', 'WARN')
        #raise Exception #, instance