def return_dat(self, chan, begsam, endsam):
        """Return the data as 2D numpy.ndarray.

        Parameters
        ----------
        chan : int or list
            index (indices) of the channels to read
        begsam : int
            index of the first sample
        endsam : int
            index of the last sample

        Returns
        -------
        numpy.ndarray
            A 2d matrix, with dimension chan X samples
        """
        return self.baseformat.dataset.return_dat(chan, begsam, endsam)
def return_dat ( self , chan , begsam , endsam ) : return self . baseformat . dataset . return_dat ( chan , begsam , endsam )
Return the data as 2D numpy.ndarray.

        Parameters
        ----------
        chan : int or list
            index (indices) of the channels to read
        begsam : int
            index of the first sample
        endsam : int
            index of the last sample

        Returns
        -------
        numpy.ndarray
            A 2d matrix, with dimension chan X samples