mexGetSHBasisMatrix
===================

.. code-block:: none

  % mexGetSHBasisMatrix:  get sh matrix based on given order and orientationMatrix
  %
  % Usage:
  %   shMatrix = mexGetSHBasisMatrix(order, orientationMatrix, mode)
  % 
  % Inputs:
  %   order:               SH order
  %   orientationMatrix :  orientation matrix where each row is an orientation (x,y,z)
  %   mode:                'spherical' or 'cartesian' (default), for the coordinates in orientationMatrix.
  %
  % Outputs:
  %   shMatrix:            each column is a real SH basis
  %
  % Copyright (c) 2013, Jian Cheng <jian.cheng.1983@gmail.com>
  %