Function _write_annot

mne/label.py:2583–2615

Write a Freesurfer annotation to a .annot file.

(fname, annot, ctab, names, table_name=_DEFAULT_TABLE_NAME)

def _write_annot(fname, annot, ctab, names, table_name=_DEFAULT_TABLE_NAME):
    """Write a Freesurfer annotation to a .annot file."""
    assert len(names) == len(ctab)
    with open(fname, "wb") as fid:
        n_verts = len(annot)
        np.array(n_verts, dtype=">i4").tofile(fid)

        data = np.zeros((n_verts, 2), dtype=">i4")
        data[:, 0] = np.arange(n_verts)
        data[:, 1] = annot
        data.ravel().tofile(fid)

        # indicate that color table exists
        np.array(1, dtype=">i4").tofile(fid)

        # color table version 2
        np.array(-2, dtype=">i4").tofile(fid)

        # write color table
        n_entries = len(ctab)
        np.array(n_entries, dtype=">i4").tofile(fid)

        # write our color table name
        _write_annot_str(fid, table_name)

        # number of entries to write
        np.array(n_entries, dtype=">i4").tofile(fid)

        # write entries
        for ii, (name, color) in enumerate(zip(names, ctab)):
            np.array(ii, dtype=">i4").tofile(fid)
            _write_annot_str(fid, name)
            np.array(color[:4], dtype=">i4").tofile(fid)


def _write_annot_str(fid, s):