realizers.py 文件源码

python
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项目:nengolib 作者: arvoelke 项目源码 文件源码
def _realize(sys, radii, T, Tinv=None):
    """Helper function for producing a RealizerResult."""
    sys = LinearSystem(sys)
    r = np.asarray(radii, dtype=np.float64)
    if r.ndim == 0:
        r = np.ones(len(sys)) * r
    elif r.ndim > 1:
        raise ValueError("radii (%s) must be a 1-dim array or scalar" % (
            radii,))
    elif len(r) != len(sys):
        raise ValueError("radii (%s) length must match state dimension %d" % (
            radii, len(sys)))

    T = T * r[None, :]
    if Tinv is None:  # this needs to be computed eventually anyways
        Tinv = inv(T)
    else:
        Tinv = Tinv / r[:, None]

    return RealizerResult(sys, T, Tinv, sys.transform(T, Tinv))
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