casa6

from __future__ import absolute_import

import os

​

# get is_CASA6 and is_python3

from casatasks.private.casa_transition import *

if is_CASA6:

    from casatools import ms

    from casatasks import casalog

    from .mstools import write_history

else:

    from taskinit import *

    from mstools import write_history

​

    ms = mstool

​

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.

        default = false; do not run asychronously

​

​

    """

    myms = ms()

    try:

        casalog.origin('importuvfits')

        casalog.post("")

        myms.fromfits(vis, fitsfile, antnamescheme=antnamescheme)

        myms.close()

​

        # Write the args to HISTORY.

        try:

            param_names = importuvfits.__code__.co_varnames[:importuvfits.__code__.co_argcount]

            if is_python3:

                vars = locals( )

                param_vals = [vars[p] for p in param_names]

            else:

                param_vals = [eval(p) for p in param_names]

            write_history(

                myms, vis, 'importuvfits', param_names, 

                param_vals, casalog

            )

        except Exception:

            casalog.post("Failed to updated HISTORY table", 'WARN')

​

    finally:

        if (myms):

            #myms.close()

            del myms 

​

​