:py:mod:`AFQ.recognition.curvature`
===================================

.. py:module:: AFQ.recognition.curvature


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


Functions
~~~~~~~~~

.. autoapisummary::

   AFQ.recognition.curvature.sl_curve
   AFQ.recognition.curvature.sl_curve_dist



.. py:function:: sl_curve(sl, n_points)

   
   Calculate the direction of the displacement between
   each point along a streamline


   :Parameters:

       **sl** : 2d array-like
           Streamline to calcualte displacements for.

       **n_points** : int
           Number of points to resample the streamline to

   :Returns:

       2d array of shape (len(sl)-1, 3) with displacements
           ..

       between each point in sl normalized to 1.
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.. py:function:: sl_curve_dist(curve1, curve2)

   
   Calculate the mean angle using the directions of displacement
   between two streamlines


   :Parameters:

       **curve1, curve2** : 2d array-like
           Two curves calculated from sl_curve.

   :Returns:

       The mean angle between each curve across all steps, in radians
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