lmlib.utils.beta.diff0

lmlib.utils.beta.diff0(y)

Gets difference of consecutive elements in vector, starting with the first element

This is the same as numpy.diff(y), but starting with the first element y[0] as the first difference (leading to a vector of the same length as the input signal vector y.

Implementation:

return np.append(np.array(y[0]), np.diff(y))

Parameters

y (array_like of shape(K,) of floats) – input signal vector

Returns

out – element-wise differences

Return type

ndarray of shape(K,) of floats

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