pynnio.py 文件源码

def _extract_signals(self, data, metadata, lazy):

        signal = None
        if lazy and data.size > 0:
            signal = AnalogSignal([],
                                  units=self._determine_units(metadata),
                                  sampling_period=metadata['dt']*pq.ms)
            signal.lazy_shape = None
        else:
            arr = numpy.vstack(self._extract_array(data, channel_index)
                               for channel_index in range(metadata['first_index'], metadata['last_index'] + 1))
            if len(arr) > 0:
                signal = AnalogSignal(arr.T,
                                      units=self._determine_units(metadata),
                                      sampling_period=metadata['dt']*pq.ms)
        if signal is not None:
            signal.annotate(label=metadata["label"],
                            variable=metadata["variable"])
        return signal