casa6

import os

import re

import shutil

import tempfile

from taskinit import *

​

def browsetable(tablename=None, mightedit=None,

                sortlist=None, taql=None, skipcols=None):

    """ Browse a table (visibility data set, calibration table, or image):

​

    Brings up a GUI browser that can open and display any CASA table.

​

    Parameters:

        tablename -- Name of table directory on disk (MS, cal. table, image)

                     default: none; example: tablename='ngc5921.ms'

        mightedit -- If True disable the filtering options (below) and allow

                     editing the table.  Warning: the GUI appears to ignore

                     whether the table tool is opened read-only - just be

                     aware that you should not edit filtered tables unless

                     you know what you are doing.

        sortlist  -- List of columns to sort by.

                     default: [] (none)

        taql      -- TaQL query string for prefiltering the table.

                     default: '' (none); example: taql='ANTENNA2 < 6'

        skipcols  -- Columns to NOT display.

                     default: [] (none); example: skipcols='feed1, feed2'

    """

    #Python script

    try:

        casalog.origin('browsetable')

        if type(tablename) == str:

            t = tbtool()

            mightfilter = sortlist or taql or skipcols

            if os.path.exists(tablename):

                t.open(tablename, nomodify=not mightedit)

            if not tablename or mightedit or not mightfilter:

                t.browse()

            else:

                colnames = t.colnames()

                if type(skipcols) == str:

                    skipcols = re.split(r',?\s+', skipcols)

                for c in skipcols:

                    if c.upper() in colnames:

                        colnames.remove(c.upper())

                if type(sortlist) == list:

                    sortlist = ', '.join(sortlist)

                # ft.browse won't work unless ft is given a name.  This does NOT

                # appear to cause more than about 116 kB to be written to disk,

                # but it does mean that the directory needs to be removed

                # afterwards.

                tempdir = '/tmp'

                if not os.path.isdir(tempdir):

                    tempdir = os.getcwd()

                ftname = tempfile.mkdtemp(prefix=tablename + '_filtered_', dir=tempdir)

                #print "ftname =", ftname

                casalog.post('Using ' + ftname + ' as the filtered table.')

                ft = t.query(taql, ftname, sortlist=sortlist.upper(),

                             columns=', '.join(colnames))

                #print "ft.name() =", ft.name()

                ft.browse()

                ft.close()