pyampp.sfq.utils
================

.. py:module:: pyampp.sfq.utils


Functions
---------

.. autoapisummary::

   pyampp.sfq.utils.idl_where
   pyampp.sfq.utils.u_grid
   pyampp.sfq.utils.u_grid_box
   pyampp.sfq.utils.u_str_add
   pyampp.sfq.utils.norm_vec


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

.. py:function:: idl_where(mask: numpy.ndarray) -> numpy.ndarray

   IDL-like WHERE: return flat indices; return [-1] if no match.


.. py:function:: u_grid(pos: numpy.ndarray, n: tuple[int, int]) -> dict[str, numpy.ndarray]

   Build an IDL-like pixel grid centered at ``pos``.


.. py:function:: u_grid_box(start: numpy.ndarray, extent: numpy.ndarray, n: numpy.ndarray) -> dict[str, numpy.ndarray]

   Build a regular 2D grid from start/extents/sample counts.


.. py:function:: u_str_add(s: dict, tags, *values)

   Minimal IDL-like struct tag add/update helper.


.. py:function:: norm_vec(v: numpy.ndarray) -> float