def null_out_formatter(feats, out_features, _out, _nullvalue):
    """Function which contains the out formatting. It has to deal with
    aggregated and point data.

    Parameters
    ----------
    feats: list of dicts [iss_i]{feats} or np.array (iss_i, feats_n)
        the features information.
    out_features: list of featurenames
        the featurenames.
    _out: optional str ['ndarray', 'dict']
        the type of output desired.
    _nullvalue: float
        the nullvalue desired for a variable.

    Returns
    -------
    feats_o: np.array(iss_i, feats_n) or list of dicts [iss_i]{feats}
        the formatted features.

    """

    return feats