casa6

########################################################################

#  immoment_test.py

#

#

# Copyright (C) 2008, 2009

# Associated Universities, Inc. Washington DC, USA.

#

# This scripts free software; you can redistribute it and/or modify it

# under the terms of the GNU Library General Public License as published by

# the Free Software Foundation; either version 2 of the License, or (at your

# option) any later version.

#

# This library is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public

# License for more details.

#

# You should have received a copy of the GNU Library General Public License

# along with this library; if not, write to the Free Software Foundation,

# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.

#

# Correspondence concerning AIPS++ should be adressed as follows:

#        Internet email: aips2-request@nrao.edu.

#        Postal address: AIPS++ Project Office

#                        National Radio Astronomy Observatory

#                        520 Edgemont Road

#                        Charlottesville, VA 22903-2475 USA

#

# <author>

# Shannon Jaeger (University of Calgary)

# </author>

#

# <summary>

# Test suite for the CASA immoments Task

# </summary>

#

# <reviewed reviwer="" date="" tests="" demos="">

# </reviewed

#

# <etymology>

# immoments_test stands for image momemnts test

# </etymology>

#

# <synopsis>

# immoments_test.py is a Python script that tests the correctness

# of the immoments task in CASA.

#

# The tests include:

#    1. Incorrect input for each paramter.  Incorrect input includes

#       one input of the incorrect data type, out-of-bounds (where

#       applicable, and correct data type but non-sensical.

#    2. Calculating one example of each type of moment.

#    3. Using the include/exclude pix parameter

#    4. Calculating moments with region selection on the sky,

#       channels, and stokes values, as well as using an input

#       region file.

#    5.Calculating moments with a mask either from the image

#      itself or another image.

# for generating momements along a user specified axis on a CASA image.

# This is a time-honoured spectral-line analysis technique for discovering

# spectral line information.

#

# In this task, moment, refers to collapsing an axis of the image,