def METHOD_NAME(v):
    """Convert 3D vector to position.
    A point (x, y, z) given by the components of a vector will be represented
    by [x, y, z, 1] in homogeneous coordinates to which we can apply a
    transformation.
    Parameters
    ----------
    v : array-like, shape (3,)
        3D vector that contains x, y, and z
    Returns
    -------
    p : array-like, shape (4,)
        Point vector with 1 as last element
    """
    return np.hstack((v, 1))