pyCGM_Single.pycgmStatic.rotaxis_nonfootflat

pyCGM_Single.pycgmStatic.rotaxis_nonfootflat(frame, ankle_JC)

Calculate the anatomically correct foot joint center and axis function for a non-flat foot.

Takes in a dictionary of xyz positions & marker names and the ankle axis then calculates the anatomically correct foot axis for a non-flat foot.

Markers used: RTOE, LTOE, RHEE, LHEE

Parameters

framedict

Dictionary of marker lists.

ankle_JCarray

An array of ankle_JC each x,y,z position.

Returns

R, L, foot_axis: list

Returns a list representing the correct foot joint center for a non-flat foot, the list contains two 1x3 arrays representing the foot axis origin x, y, z positions and a 3x2x3 list containing the foot axis center in the first dimension and the direction of the axis in the second dimension.

Examples

>>> import numpy as np
>>> from .pycgmStatic import rotaxis_nonfootflat
>>> frame = { 'RHEE': [374.01, 181.58, 49.51],
...            'LHEE': [105.30, 180.21, 47.16],
...            'RTOE': [442.82, 381.62, 42.66],
...            'LTOE': [39.44, 382.45, 41.79]}
>>> ankle_JC = [np.array([393.76, 247.68, 87.74]),
...            np.array([98.75, 219.47, 80.63]),
...            [[np.array([394.48, 248.37, 87.72]),
...            np.array([393.07, 248.39, 87.62]),
...            np.array([393.69, 247.78, 88.73])],
...            [np.array([98.47, 220.43, 80.53]),
...            np.array([97.79, 219.21, 80.76]),
...            np.array([98.85, 219.60, 81.62])]]]
>>> [np.around(arr, 2) for arr in rotaxis_nonfootflat(frame,ankle_JC)] 
[array([442.82, 381.62,  42.66]),
array([ 39.44, 382.45,  41.79]),
array([[[442.72, 381.69,  43.65],
        [441.88, 381.94,  42.54],
        [442.49, 380.67,  42.69]],
       [[ 39.56, 382.51,  42.78],
        [ 38.5 , 382.15,  41.92],
        [ 39.75, 381.5 ,  41.82]]])]