U
    GvfŸ  ã                	   @   sx   d Z ddlZddlZddlmZ ddlmZ dd„ Zddd	„Z	ej
 d
ddddddg¡ej
 ddddg¡dd„ ƒƒZdS )zTests for spline filtering.é    N)Úassert_almost_equal)Úndimagec                 C   s2   dgdgddgddgdddgdddgdœ}||  S )	z0Knot values to the right of a B-spline's center.é   é   é   éæ   éL   éB   é   )r   r   é   é   r   é   © )ÚorderÚknot_valuesr   r   úD/tmp/pip-unpacked-wheel-96ln3f52/scipy/ndimage/tests/test_splines.pyÚget_spline_knot_values
   s    ûr   Úmirrorc                 C   sJ  t |ƒ}t | | f¡}t|ƒD ]J\}}t || ¡}|dkrH||||f< q||||| f< |||| |f< q|d dt|dd… ƒ  }|dkr˜d\}	}
n2|dkrªd\}	}
n |d	kr¼d
\}	}
ntd |¡ƒ‚tt	|ƒd ƒD ]f}t||d d… ƒD ]L\}}|||	|
|  f  |7  < || d |	 d |
|  f  |7  < qòqÚ|| S )z1Matrix to invert to find the spline coefficients.r   r   r   Nr   )r   r   Úreflect)r   r   ú	grid-wrap)éÿÿÿÿr   zunsupported mode {})
r   ÚnpÚzerosÚ	enumerateZarangeÚsumÚ
ValueErrorÚformatÚrangeÚlen)Únr   Úmoder   ÚmatrixZdiagZ
knot_valueÚindicesZknot_values_sumÚstartÚstepÚrowÚidxr   r   r   Úmake_spline_knot_matrix   s*    


,r'   r   r   r   r   r   r   r    r   r   c                 C   sn   d}t j|td}tj|d| |d}tj|d| |d}t|| |d}t|t  ||¡ƒ t|t  ||j¡ƒ d S )Néd   )Zdtyper   )Zaxisr   r    r   )r    )	r   ÚeyeÚfloatr   Zspline_filter1dr'   r   ÚdotÚT)r   r    r   r)   Zspline_filter_axis_0Zspline_filter_axis_1r!   r   r   r   Ú%test_spline_filter_vs_matrix_solution6   s    
ÿ
ÿr-   )r   )Ú__doc__Znumpyr   ZpytestZnumpy.testingr   Zscipyr   r   r'   ÚmarkZparametrizer-   r   r   r   r   Ú<module>   s   
 