Method save

mne/io/base.py:1737–1892

Save raw data to file. Parameters ---------- fname : path-like File name of the new dataset. This has to be a new filename unless data have been preloaded. Filenames should end with ``raw.fif`` (common raw data), ``raw_sss.fif``

(
        self,
        fname,
        picks=None,
        tmin=0,
        tmax=None,
        buffer_size_sec=None,
        drop_small_buffer=False,
        proj=False,
        fmt="single",
        overwrite=False,
        split_size="2GB",
        split_naming="neuromag",
        verbose=None,
    )

    @verbose
    def save(
        self,
        fname,
        picks=None,
        tmin=0,
        tmax=None,
        buffer_size_sec=None,
        drop_small_buffer=False,
        proj=False,
        fmt="single",
        overwrite=False,
        split_size="2GB",
        split_naming="neuromag",
        verbose=None,
    ):
        """Save raw data to file.

        Parameters
        ----------
        fname : path-like
            File name of the new dataset. This has to be a new filename
            unless data have been preloaded. Filenames should end with
            ``raw.fif`` (common raw data), ``raw_sss.fif``
            (Maxwell-filtered continuous data),
            ``raw_tsss.fif`` (temporally signal-space-separated data),
            ``_meg.fif`` (common MEG data), ``_eeg.fif`` (common EEG data),
            or ``_ieeg.fif`` (common intracranial EEG data). You may also
            append an additional ``.gz`` suffix to enable gzip compression.
        %(picks_all)s
        %(tmin_raw)s
        %(tmax_raw)s
        buffer_size_sec : float | None
            Size of data chunks in seconds. If None (default), the buffer
            size of the original file is used.
        drop_small_buffer : bool
            Drop or not the last buffer. It is required by maxfilter (SSS)
            that only accepts raw files with buffers of the same size.
        proj : bool
            If True the data is saved with the projections applied (active).

            .. note:: If ``apply_proj()`` was used to apply the projections,
                      the projectons will be active even if ``proj`` is False.
        fmt : 'single' | 'double' | 'int' | 'short'
            Format to use to save raw data. Valid options are 'double',
            'single', 'int', and 'short' for 64- or 32-bit float, or 32- or
            16-bit integers, respectively. It is **strongly** recommended to
            use 'single', as this is backward-compatible, and is standard for
            maintaining precision. Note that using 'short' or 'int' may result
            in loss of precision, complex data cannot be saved as 'short',
            and neither complex data types nor real data stored as 'double'
            can be loaded with the MNE command-line tools. See raw.orig_format
            to determine the format the original data were stored in.
        %(overwrite)s
            To overwrite original file (the same one that was loaded),
            data must be preloaded upon reading.
        split_size : str | int
            Large raw files are automatically split into multiple pieces. This
            parameter specifies the maximum size of each piece. If the