pyCGM_Single.pycgmCalc.createMotionDataDict

pyCGM_Single.pycgmCalc.createMotionDataDict(labels, data)

Creates an array of motion capture data given labels and data.

Parameters

labelsarray

List of marker position names.

dataarray

List of x, y, and z coordinate values corresponding to the marker names in labels. Indices of data correspond to frames in the trial.

Returns

motiondataarray

List of dict. Indices of motiondata correspond to frames in the trial. Keys in the dictionary are marker names and values are x, y, and z coordinates of the corresponding marker.

Examples

This example uses a loop and numpy.array_equal to test the equality of individual dictionary elements since python does not guarantee the order of dictionary elements.

Example for three markers and two frames of trial.

>>> from numpy import array, array_equal
>>> labels = ['LFHD', 'RFHD', 'LBHD']
>>> data = [[array([184.55, 409.69, 1721.34]),
...          array([325.83, 402.55, 1722.50]),
...          array([197.86, 251.29, 1696.90])],
...         [array([185.55, 408.69, 1722.34]),
...          array([326.83, 403.55, 1723.50]),
...          array([198.86, 252.29, 1697.90])]]
>>> result = createMotionDataDict(labels, data)
>>> expected = [{'LFHD': array([184.55, 409.69, 1721.34]),
...              'RFHD': array([325.83, 402.55, 1722.50]),
...              'LBHD': array([197.86, 251.29, 1696.90])},
...             {'LFHD': array([185.55, 408.69, 1722.34]),
...              'RFHD': array([326.83, 403.55, 1723.50]),
...              'LBHD': array([198.86, 252.29, 1697.90])}]

>>> flag = True # False if any values are not equal
>>> for i in range(len(result)):
...     for key in result[i]:
...         if (not array_equal(result[i][key], expected[i][key])):
...             flag = False
>>> flag
True