orca.utils.vis_sub
==================

.. py:module:: orca.utils.vis_sub

.. autoapi-nested-parse::

   Visibility subtraction utilities.

   Provides functions for computing difference between visibility datasets,
   useful for transient detection and background subtraction.

   .. note:: This module is experimental and not fully tested.



Attributes
----------

.. autoapisummary::

   orca.utils.vis_sub.parser


Functions
---------

.. autoapisummary::

   orca.utils.vis_sub.diff


Module Contents
---------------

.. py:function:: diff(early_vis: str, late_vis: str, out_vis: str)

   Compute difference between two visibility files.

   Subtracts early_vis from late_vis and writes to out_vis.
   Output metadata (including uvw) comes from early_vis.

   :param early_vis: Path to the earlier visibility file.
   :param late_vis: Path to the later visibility file.
   :param out_vis: Path for the output difference visibility file.

   :raises AssertionError: If the visibility files have different antenna ordering.


.. py:data:: parser