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Current File : /lib/python3/dist-packages/scipy/spatial/__pycache__/__init__.cpython-310.pyc
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=============================================================
Spatial algorithms and data structures (:mod:`scipy.spatial`)
=============================================================

.. currentmodule:: scipy.spatial

Spatial transformations
=======================

These are contained in the `scipy.spatial.transform` submodule.

Nearest-neighbor queries
========================
.. autosummary::
   :toctree: generated/

   KDTree      -- class for efficient nearest-neighbor queries
   cKDTree     -- class for efficient nearest-neighbor queries (faster implementation)
   Rectangle

Distance metrics are contained in the :mod:`scipy.spatial.distance` submodule.

Delaunay triangulation, convex hulls, and Voronoi diagrams
==========================================================

.. autosummary::
   :toctree: generated/

   Delaunay    -- compute Delaunay triangulation of input points
   ConvexHull  -- compute a convex hull for input points
   Voronoi     -- compute a Voronoi diagram hull from input points
   SphericalVoronoi -- compute a Voronoi diagram from input points on the surface of a sphere
   HalfspaceIntersection -- compute the intersection points of input halfspaces

Plotting helpers
================

.. autosummary::
   :toctree: generated/

   delaunay_plot_2d     -- plot 2-D triangulation
   convex_hull_plot_2d  -- plot 2-D convex hull
   voronoi_plot_2d      -- plot 2-D Voronoi diagram

.. seealso:: :ref:`Tutorial <qhulltutorial>`


Simplex representation
======================
The simplices (triangles, tetrahedra, etc.) appearing in the Delaunay
tessellation (N-D simplices), convex hull facets, and Voronoi ridges
(N-1-D simplices) are represented in the following scheme::

    tess = Delaunay(points)
    hull = ConvexHull(points)
    voro = Voronoi(points)

    # coordinates of the jth vertex of the ith simplex
    tess.points[tess.simplices[i, j], :]        # tessellation element
    hull.points[hull.simplices[i, j], :]        # convex hull facet
    voro.vertices[voro.ridge_vertices[i, j], :] # ridge between Voronoi cells

For Delaunay triangulations and convex hulls, the neighborhood
structure of the simplices satisfies the condition:
``tess.neighbors[i,j]`` is the neighboring simplex of the ith
simplex, opposite to the ``j``-vertex. It is -1 in case of no neighbor.

Convex hull facets also define a hyperplane equation::

    (hull.equations[i,:-1] * coord).sum() + hull.equations[i,-1] == 0

Similar hyperplane equations for the Delaunay triangulation correspond
to the convex hull facets on the corresponding N+1-D
paraboloid.

The Delaunay triangulation objects offer a method for locating the
simplex containing a given point, and barycentric coordinate
computations.

Functions
---------

.. autosummary::
   :toctree: generated/

   tsearch
   distance_matrix
   minkowski_distance
   minkowski_distance_p
   procrustes
   geometric_slerp

Warnings / Errors used in :mod:`scipy.spatial`
----------------------------------------------
.. autosummary::
   :toctree: generated/

   QhullError
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