casa5

from taskinit import *

from ialib import write_image_history

​

def impv(

    imagename, outfile, mode, start, end, center, length, pa, width,

    unit, overwrite, region, chans, stokes, mask, stretch

):

    casalog.origin('impv')

    try:

        if len(outfile) == 0:

            raise Exception, "outfile must be specified."

        mymode = mode.lower()

        if mymode.startswith('c'):

            if len(start) == 0 or len(end) == 0:

                raise Exception, "When mode='coords', start and end must both be specified."

            center = ""

            length = ""

            pa = ""

        elif mymode.startswith('l'):

            if (

                len(center) == 0 

                or (

                    not isinstance(length, (int, long, float))

                    and len(length) == 0

                )

                or len(pa) == 0

            ):

                raise Exception, "When mode='length', center, length, and pa must all be specified."

            start = ""

            end = ""

        else:

            raise Exception, "Unsupported value for mode."

        myia = iatool()

        myia.dohistory(False)

        if (not myia.open(imagename)):

            raise Exception, "Cannot create image analysis tool using " + imagename

        outia = myia.pv(

            outfile=outfile, start=start, end=end, center=center,

            length=length, pa=pa, width=width, unit=unit,

            overwrite=overwrite, region=region, chans=chans,

            stokes=stokes, mask=mask, stretch=stretch, wantreturn=True

        )

        try:

            param_names = impv.func_code.co_varnames[:impv.func_code.co_argcount]

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

            write_image_history(

                outia, sys._getframe().f_code.co_name,

                param_names, param_vals, casalog

            )

        except Exception, instance:

            casalog.post("*** Error \'%s\' updating HISTORY" % (instance), 'WARN')

        return True

    except Exception, instance:

        casalog.post( str( '*** Error ***') + str(instance), 'SEVERE')

        raise

    finally:

        if (myia):

            myia.done()

        if (outia):

            outia.done()