예제 #1
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def test_coreg_gui_pyvista_file_support(inst_path, tmp_path,
                                        renderer_interactive_pyvistaqt):
    """Test reading supported files."""
    from mne.gui import coregistration

    if inst_path == 'gen_montage':
        # generate a montage fig to use as inst.
        tmp_info = read_info(raw_path)
        eeg_chans = []
        for pt in tmp_info['dig']:
            if pt['kind'] == FIFF.FIFFV_POINT_EEG:
                eeg_chans.append(f"EEG {pt['ident']:03d}")

        dig = DigMontage(dig=tmp_info['dig'], ch_names=eeg_chans)
        inst_path = tmp_path / 'tmp-dig.fif'
        dig.save(inst_path)

    if inst_path == ctf_raw_path:
        ctx = pytest.warns(RuntimeWarning, match='MEG ref channel RMSP')
    elif inst_path == snirf_nirsport2_raw_path:  # TODO: This is maybe a bug?
        ctx = pytest.warns(RuntimeWarning, match='assuming "head"')
    else:
        ctx = nullcontext()
    with ctx:
        coregistration(inst=inst_path,
                       subject='sample',
                       subjects_dir=subjects_dir)
예제 #2
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def test_coreg_gui_pyvista_file_support(inst_path, tmp_path,
                                        renderer_interactive_pyvistaqt):
    """Test reading supported files."""
    from mne.gui import coregistration

    if inst_path == 'gen_montage':
        # generate a montage fig to use as inst.
        tmp_info = read_info(raw_path)
        eeg_chans = []
        for pt in tmp_info['dig']:
            if pt['kind'] == FIFF.FIFFV_POINT_EEG:
                eeg_chans.append(f"EEG {pt['ident']:03d}")

        dig = DigMontage(dig=tmp_info['dig'], ch_names=eeg_chans)
        inst_path = tmp_path / 'tmp-dig.fif'
        dig.save(inst_path)

    # Suppressing warnings here is not ideal.
    # However ctf_raw_path (catch-alp-good-f.ds) is poorly formed and causes
    # mne.io.read_raw to issue warning.
    # XXX consider replacing ctf_raw_path and removing warning ignore filter.
    with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        coregistration(inst=inst_path,
                       subject='sample',
                       subjects_dir=subjects_dir)
예제 #3
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def test_coreg_gui_notebook(renderer_notebook, nbexec):
    """Test the coregistration UI in a notebook."""
    import os
    import mne
    from mne.datasets import testing
    from mne.gui import coregistration
    mne.viz.set_3d_backend('notebook')  # set the 3d backend
    data_path = testing.data_path()
    subjects_dir = os.path.join(data_path, 'subjects')
    coregistration(subject='sample', subjects_dir=subjects_dir)
예제 #4
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def test_coreg_gui_notebook(renderer_notebook, nbexec):
    """Test the coregistration UI in a notebook."""
    import os
    import mne
    from mne.datasets import testing
    from mne.gui import coregistration
    mne.viz.set_3d_backend('notebook')  # set the 3d backend
    with mne.utils.modified_env(_MNE_FAKE_HOME_DIR=None):
        data_path = testing.data_path(download=False)
    subjects_dir = os.path.join(data_path, 'subjects')
    coregistration(subject='sample', subjects_dir=subjects_dir)
예제 #5
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def forward_pipeline(raw_fname, freesurfer_dir, subject,
                     trans_fname=None, fwd_fname=None, oct_fname=None,
                     bem_sol_fname=None, save_dir=None, overwrite=False):
    import os.path as op
    from jr.meg import check_freesurfer, mne_anatomy

    # Setup paths
    if save_dir is None:
        save_dir = '/'.join(raw_fname.split('/')[:-1])
        print('Save/read directory: %s' % save_dir)

    if trans_fname is None:
        trans_fname = op.join(save_dir, subject + '-trans.fif')
        bem_sol_fname = op.join(freesurfer_dir, subject, 'bem',
                                subject + '-5120-bem-sol.fif')
        oct_fname = op.join(freesurfer_dir, subject, 'bem',
                            subject + '-oct-6-src.fif')
        fwd_fname = op.join(save_dir, subject + '-meg-fwd.fif')

    # Checks Freesurfer segmentation and compute watershed bem
    if check_freesurfer(subjects_dir=freesurfer_dir,
                        subject=subject):
        mne_anatomy(subjects_dir=freesurfer_dir, subject=subject,
                    overwrite=overwrite)

    # Manual coregisteration head markers with coils
    if overwrite or not op.isfile(trans_fname):
        from mne.gui import coregistration
        coregistration(subject=subject, subjects_dir=freesurfer_dir,
                       inst=raw_fname)

    # Forward solution
    if overwrite or not op.exists(fwd_fname):
        from mne import (make_forward_solution, convert_forward_solution,
                         write_forward_solution)
        fwd = make_forward_solution(
            raw_fname, trans_fname, oct_fname, bem_sol_fname,
            fname=None, meg=True, eeg=False, mindist=5.0,
            overwrite=True, ignore_ref=True)

        # convert to surface orientation for better visualization
        fwd = convert_forward_solution(fwd, surf_ori=True)
        # save
        write_forward_solution(fwd_fname, fwd, overwrite=True)
    else:
        from mne import read_forward_solution
        fwd = read_forward_solution(fwd_fname, surf_ori=True)
    return fwd
예제 #6
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def test_coreg_gui_scraper(tmp_path, renderer_interactive_pyvistaqt):
    """Test the scrapper for the coregistration GUI."""
    from mne.gui import coregistration
    coreg = coregistration(subject='sample',
                           subjects_dir=subjects_dir,
                           trans=fname_trans)
    (tmp_path / '_images').mkdir()
    image_path = str(tmp_path / '_images' / 'temp.png')
    gallery_conf = dict(builder_name='html', src_dir=str(tmp_path))
    block_vars = dict(example_globals=dict(gui=coreg),
                      image_path_iterator=iter([image_path]))
    assert not op.isfile(image_path)
    assert not getattr(coreg, '_scraped', False)
    mne.gui._GUIScraper()(None, block_vars, gallery_conf)
    assert op.isfile(image_path)
    assert coreg._scraped
예제 #7
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def test_no_sparse_head(subjects_dir_tmp, renderer_interactive_pyvistaqt,
                        monkeypatch):
    """Test mne.gui.coregistration with no sparse head."""
    from mne.gui import coregistration
    subject = 'sample'
    out_rr, out_tris = mne.read_surface(
        op.join(subjects_dir_tmp, subject, 'bem', 'outer_skin.surf'))
    for head in ('sample-head.fif', 'outer_skin.surf'):
        os.remove(op.join(subjects_dir_tmp, subject, 'bem', head))
    # Avoid actually doing the decimation (it's slow)
    monkeypatch.setattr(mne.coreg, 'decimate_surface',
                        lambda rr, tris, n_triangles: (out_rr, out_tris))
    with pytest.warns(RuntimeWarning, match='No low-resolution head found'):
        coreg = coregistration(inst=raw_path,
                               subject=subject,
                               subjects_dir=subjects_dir_tmp)
    coreg.close()
예제 #8
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def test_coreg_gui_pyvista_basic(tmp_path, renderer_interactive_pyvistaqt,
                                 monkeypatch):
    """Test that using CoregistrationUI matches mne coreg."""
    from mne.gui import coregistration
    config = get_config()
    # the sample subject in testing has MRI fids
    assert op.isfile(
        op.join(subjects_dir, 'sample', 'bem', 'sample-fiducials.fif'))

    coreg = coregistration(subject='sample',
                           subjects_dir=subjects_dir,
                           trans=fname_trans)
    assert coreg._lock_fids
    coreg._reset_fiducials()
    coreg.close()

    # make it always log the distances
    monkeypatch.setattr(_3d.logger, 'info', _3d.logger.warning)
    with catch_logging() as log:
        coreg = coregistration(
            inst=raw_path,
            subject='sample',
            head_high_res=False,  # for speed
            subjects_dir=subjects_dir,
            verbose='debug')
    log = log.getvalue()
    assert 'Total 16/78 points inside the surface' in log
    coreg._set_fiducials_file(fid_fname)
    assert coreg._fiducials_file == fid_fname

    # fitting (with scaling)
    assert not coreg._mri_scale_modified
    coreg._reset()
    coreg._reset_fitting_parameters()
    coreg._set_scale_mode("uniform")
    coreg._fits_fiducials()
    assert_allclose(coreg.coreg._scale,
                    np.array([97.46, 97.46, 97.46]) * 1e-2,
                    atol=1e-3)
    shown_scale = [coreg._widgets[f's{x}'].get_value() for x in 'XYZ']
    assert_allclose(shown_scale, coreg.coreg._scale * 100, atol=1e-2)
    coreg._set_icp_fid_match("nearest")
    coreg._set_scale_mode("3-axis")
    coreg._fits_icp()
    assert_allclose(coreg.coreg._scale,
                    np.array([104.43, 101.47, 125.78]) * 1e-2,
                    atol=1e-3)
    shown_scale = [coreg._widgets[f's{x}'].get_value() for x in 'XYZ']
    assert_allclose(shown_scale, coreg.coreg._scale * 100, atol=1e-2)
    coreg._set_scale_mode("None")
    coreg._set_icp_fid_match("matched")
    assert coreg._mri_scale_modified

    # unlock fiducials
    assert coreg._lock_fids
    coreg._set_lock_fids(False)
    assert not coreg._lock_fids

    # picking
    assert not coreg._mri_fids_modified
    vtk_picker = TstVTKPicker(coreg._surfaces['head'], 0, (0, 0))
    coreg._on_mouse_move(vtk_picker, None)
    coreg._on_button_press(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)
    coreg._on_button_release(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)  # also pick when locked
    assert coreg._mri_fids_modified

    # lock fiducials
    coreg._set_lock_fids(True)
    assert coreg._lock_fids

    # fitting (no scaling)
    assert coreg._nasion_weight == 10.
    coreg._set_point_weight(11., 'nasion')
    assert coreg._nasion_weight == 11.
    coreg._fit_fiducials()
    with catch_logging() as log:
        coreg._redraw()  # actually emit the log
    log = log.getvalue()
    assert 'Total 6/78 points inside the surface' in log
    with catch_logging() as log:
        coreg._fit_icp()
        coreg._redraw()
    log = log.getvalue()
    assert 'Total 38/78 points inside the surface' in log
    assert coreg.coreg._extra_points_filter is None
    coreg._omit_hsp()
    with catch_logging() as log:
        coreg._redraw()
    log = log.getvalue()
    assert 'Total 29/53 points inside the surface' in log
    assert coreg.coreg._extra_points_filter is not None
    coreg._reset_omit_hsp_filter()
    with catch_logging() as log:
        coreg._redraw()
    log = log.getvalue()
    assert 'Total 38/78 points inside the surface' in log
    assert coreg.coreg._extra_points_filter is None

    assert coreg._grow_hair == 0
    coreg._fit_fiducials()  # go back to few inside to start
    with catch_logging() as log:
        coreg._redraw()
    log = log.getvalue()
    assert 'Total 6/78 points inside the surface' in log
    norm = np.linalg.norm(coreg._head_geo['rr'])  # what's used for inside
    assert_allclose(norm, 5.949288, atol=1e-3)
    coreg._set_grow_hair(20.0)
    with catch_logging() as log:
        coreg._redraw()
    assert coreg._grow_hair == 20.0
    norm = np.linalg.norm(coreg._head_geo['rr'])
    assert_allclose(norm, 6.555220, atol=1e-3)  # outward
    log = log.getvalue()
    assert 'Total 8/78 points inside the surface' in log  # more outside now

    # visualization
    assert not coreg._helmet
    coreg._set_helmet(True)
    assert coreg._helmet
    assert coreg._orient_glyphs
    assert coreg._scale_by_distance
    assert coreg._mark_inside
    assert_allclose(coreg._head_opacity,
                    float(config.get('MNE_COREG_HEAD_OPACITY', '0.8')))
    assert coreg._hpi_coils
    assert coreg._eeg_channels
    assert coreg._head_shape_points
    assert coreg._scale_mode == 'None'
    assert coreg._icp_fid_match == 'matched'
    assert coreg._head_resolution is False

    assert coreg._trans_modified
    tmp_trans = tmp_path / 'tmp-trans.fif'
    coreg._save_trans(tmp_trans)
    assert not coreg._trans_modified
    assert op.isfile(tmp_trans)

    # first, disable auto cleanup
    coreg._renderer._window_close_disconnect(after=True)
    # test _close_callback()
    coreg.close()
    coreg._widgets['close_dialog'].trigger('Discard')  # do not save
    coreg._clean()  # finally, cleanup internal structures

    # Coregistration instance should survive
    assert isinstance(coreg.coreg, Coregistration)

    # Fullscreen mode
    coreg = coregistration(subject='sample',
                           subjects_dir=subjects_dir,
                           fullscreen=True)
예제 #9
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"""MRI <--> head coordinates coregistration"""
from argparse import ArgumentParser

from mne.gui import coregistration

from metacog import bp
from metacog.paths import dirs

parser = ArgumentParser(description=__doc__)
parser.add_argument("subject", help="subject id")
args = parser.parse_args()
subj = args.subject

info_src = bp.root.fpath(subject=subj, task="questions", run=1, session=None)

trans_path = bp.trans.fpath(subject=subj)
trans_path.parent.mkdir(exist_ok=True)
trans_path = trans_path if trans_path.exists() else None

coregistration(
    subject=f"sub-{subj}",
    subjects_dir=dirs.fsf_subjects,
    inst=info_src,
    trans=trans_path,
)
예제 #10
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def test_coreg_gui_pyvista(tmp_path, renderer_interactive_pyvistaqt):
    """Test that using CoregistrationUI matches mne coreg."""
    from mne.gui import coregistration
    from mne.gui._coreg import CoregistrationUI
    config = get_config(home_dir=os.environ.get('_MNE_FAKE_HOME_DIR'))
    # the sample subject in testing has MRI fids
    assert op.isfile(
        op.join(subjects_dir, 'sample', 'bem', 'sample-fiducials.fif'))

    deprecated_params = ['standalone', 'head_transparency', 'project_eeg']
    for param in deprecated_params:
        kwargs = {p: None for p in deprecated_params}
        kwargs[param] = True
        with pytest.warns(DeprecationWarning, match=f'{param} is deprecated'):
            coreg = CoregistrationUI(info_file=None,
                                     subject='sample',
                                     subjects_dir=subjects_dir,
                                     **kwargs)
            coreg.close()
    del kwargs

    deprecated_params = ['project_eeg']
    for param in deprecated_params:
        kwargs = {p: None for p in deprecated_params}
        kwargs[param] = True
        with pytest.warns(DeprecationWarning, match=f'{param} is deprecated'):
            coreg = coregistration(subject='sample',
                                   subjects_dir=subjects_dir,
                                   **kwargs)
            coreg.close()
    del kwargs

    coreg = coregistration(subject='sample',
                           subjects_dir=subjects_dir,
                           trans=fname_trans)
    assert coreg._lock_fids
    coreg._reset_fiducials()
    coreg.close()

    coreg = coregistration(inst=raw_path,
                           subject='sample',
                           subjects_dir=subjects_dir)
    coreg._set_fiducials_file(fid_fname)
    assert coreg._fiducials_file == fid_fname

    # fitting (with scaling)
    assert not coreg._mri_scale_modified
    coreg._reset()
    coreg._reset_fitting_parameters()
    coreg._set_scale_mode("uniform")
    coreg._fits_fiducials()
    assert_allclose(coreg.coreg._scale,
                    np.array([97.46, 97.46, 97.46]) * 1e-2,
                    atol=1e-3)
    coreg._set_icp_fid_match("nearest")
    coreg._set_scale_mode("3-axis")
    coreg._fits_icp()
    assert_allclose(coreg.coreg._scale,
                    np.array([104.43, 101.47, 125.78]) * 1e-2,
                    atol=1e-3)
    coreg._set_scale_mode("None")
    coreg._set_icp_fid_match("matched")
    assert coreg._mri_scale_modified

    # unlock fiducials
    assert coreg._lock_fids
    coreg._set_lock_fids(False)
    assert not coreg._lock_fids

    # picking
    assert not coreg._mri_fids_modified
    vtk_picker = TstVTKPicker(coreg._surfaces['head'], 0, (0, 0))
    coreg._on_mouse_move(vtk_picker, None)
    coreg._on_button_press(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)
    coreg._on_button_release(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)  # also pick when locked
    assert coreg._mri_fids_modified

    # lock fiducials
    coreg._set_lock_fids(True)
    assert coreg._lock_fids

    # fitting (no scaling)
    assert coreg._nasion_weight == 10.
    coreg._set_point_weight(11., 'nasion')
    assert coreg._nasion_weight == 11.
    coreg._fit_fiducials()
    coreg._fit_icp()
    assert coreg.coreg._extra_points_filter is None
    coreg._omit_hsp()
    assert coreg.coreg._extra_points_filter is not None
    coreg._reset_omit_hsp_filter()
    assert coreg.coreg._extra_points_filter is None

    assert coreg._grow_hair == 0
    coreg._set_grow_hair(0.1)
    assert coreg._grow_hair == 0.1

    # visualization
    assert not coreg._helmet
    coreg._set_helmet(True)
    assert coreg._helmet
    assert coreg._orient_glyphs
    assert coreg._scale_by_distance
    assert coreg._mark_inside
    assert_allclose(coreg._head_opacity,
                    float(config.get('MNE_COREG_HEAD_OPACITY', '0.8')))
    assert coreg._hpi_coils
    assert coreg._eeg_channels
    assert coreg._head_shape_points
    assert coreg._scale_mode == 'None'
    assert coreg._icp_fid_match == 'matched'
    assert coreg._head_resolution == \
        (config.get('MNE_COREG_HEAD_HIGH_RES', 'true') == 'true')

    assert coreg._trans_modified
    tmp_trans = tmp_path / 'tmp-trans.fif'
    coreg._save_trans(tmp_trans)
    assert not coreg._trans_modified
    assert op.isfile(tmp_trans)

    # first, disable auto cleanup
    coreg._renderer._window_close_disconnect(after=True)
    # test _close_callback()
    coreg.close()
    coreg._widgets['close_dialog'].trigger('Discard')  # do not save
    coreg._clean()  # finally, cleanup internal structures

    # Coregistration instance should survive
    assert isinstance(coreg.coreg, Coregistration)
예제 #11
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def forward_pipeline(raw_fname,
                     freesurfer_dir,
                     subject,
                     trans_fname=None,
                     fwd_fname=None,
                     oct_fname=None,
                     bem_sol_fname=None,
                     save_dir=None,
                     overwrite=False):
    import os.path as op
    from jr.meg import check_freesurfer, mne_anatomy

    # Setup paths
    if save_dir is None:
        save_dir = '/'.join(raw_fname.split('/')[:-1])
        print('Save/read directory: %s' % save_dir)

    if trans_fname is None:
        trans_fname = op.join(save_dir, subject + '-trans.fif')
        bem_sol_fname = op.join(freesurfer_dir, subject, 'bem',
                                subject + '-5120-bem-sol.fif')
        oct_fname = op.join(freesurfer_dir, subject, 'bem',
                            subject + '-oct-6-src.fif')
        fwd_fname = op.join(save_dir, subject + '-meg-fwd.fif')

    # Checks Freesurfer segmentation and compute watershed bem
    if check_freesurfer(subjects_dir=freesurfer_dir, subject=subject):
        mne_anatomy(subjects_dir=freesurfer_dir,
                    subject=subject,
                    overwrite=overwrite)

    # Manual coregisteration head markers with coils
    if overwrite or not op.isfile(trans_fname):
        from mne.gui import coregistration
        coregistration(subject=subject,
                       subjects_dir=freesurfer_dir,
                       inst=raw_fname)

    # Forward solution
    if overwrite or not op.exists(fwd_fname):
        from mne import (make_forward_solution, convert_forward_solution,
                         write_forward_solution)
        fwd = make_forward_solution(raw_fname,
                                    trans_fname,
                                    oct_fname,
                                    bem_sol_fname,
                                    fname=None,
                                    meg=True,
                                    eeg=False,
                                    mindist=5.0,
                                    overwrite=True,
                                    ignore_ref=True)

        # convert to surface orientation for better visualization
        fwd = convert_forward_solution(fwd, surf_ori=True)
        # save
        write_forward_solution(fwd_fname, fwd, overwrite=True)
    else:
        from mne import read_forward_solution
        fwd = read_forward_solution(fwd_fname, surf_ori=True)
    return fwd
예제 #12
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def test_coreg_gui_pyvista(tmp_path, renderer_interactive_pyvistaqt):
    """Test that using CoregistrationUI matches mne coreg."""
    from mne.gui import coregistration
    config = get_config(home_dir=os.environ.get('_MNE_FAKE_HOME_DIR'))
    tmp_trans = tmp_path / 'tmp-trans.fif'
    # the sample subject in testing has MRI fids
    assert op.isfile(
        op.join(subjects_dir, 'sample', 'bem', 'sample-fiducials.fif'))
    coreg = coregistration(subject='sample',
                           subjects_dir=subjects_dir,
                           trans=fname_trans)
    assert coreg._lock_fids
    coreg._reset_fiducials()
    coreg.close()

    coreg = coregistration(inst=raw_path,
                           subject='sample',
                           subjects_dir=subjects_dir)
    coreg._set_fiducials_file(fid_fname)
    assert coreg._fiducials_file == fid_fname

    # unlock fiducials
    assert coreg._lock_fids
    coreg._set_lock_fids(False)
    assert not coreg._lock_fids

    # picking
    vtk_picker = TstVTKPicker(coreg._surfaces['head'], 0, (0, 0))
    coreg._on_mouse_move(vtk_picker, None)
    coreg._on_button_press(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)
    coreg._on_button_release(vtk_picker, None)
    coreg._on_pick(vtk_picker, None)  # also pick when locked

    # lock fiducials
    coreg._set_lock_fids(True)
    assert coreg._lock_fids

    # fitting
    assert coreg._nasion_weight == 10.
    coreg._set_point_weight(11., 'nasion')
    assert coreg._nasion_weight == 11.
    coreg._fit_fiducials()
    coreg._fit_icp()
    assert coreg._coreg._extra_points_filter is None
    coreg._omit_hsp()
    assert coreg._coreg._extra_points_filter is not None
    coreg._reset_omit_hsp_filter()
    assert coreg._coreg._extra_points_filter is None

    assert coreg._grow_hair == 0
    coreg._set_grow_hair(0.1)
    assert coreg._grow_hair == 0.1

    # visualization
    assert coreg._orient_glyphs == \
        (config.get('MNE_COREG_ORIENT_TO_SURFACE', '') == 'true')
    assert coreg._hpi_coils
    assert coreg._eeg_channels
    assert coreg._head_shape_points
    assert coreg._scale_mode == 'None'
    assert coreg._icp_fid_match == 'nearest'
    assert coreg._head_resolution == \
        (config.get('MNE_COREG_HEAD_HIGH_RES', 'true') == 'true')
    assert not coreg._head_transparency
    coreg._set_head_transparency(True)
    assert coreg._head_transparency

    coreg._save_trans(tmp_trans)
    assert op.isfile(tmp_trans)

    coreg.close()
from mne.viz import plot_trans
from mne.gui import coregistration
if True:
    for meg_subject, subject in zip(range(1, 21), subjects_id):
        if subject in missing_mri + bad_mri:
            continue
        raw_fname = paths('sss', subject=meg_subject, block=1)
        trans_fname = paths('trans', subject=meg_subject)
        # XXX for one subject the HPI were adequately triangulated before the
        # first block
        if subject == 'ps120458':
            raw_fname.split('1-sss.fif')[0] + '2-sss.fif'
        # Manual coregistration
        print(subject, meg_subject)
        coregistration(subject=subject,
                       subjects_dir=subjects_dir,
                       inst=raw_fname)
        # Plot
        info = read_info(raw_fname)
        plot_trans(info,
                   trans_fname,
                   subject=subject,
                   dig=True,
                   meg_sensors=True)


def _copy_from_fsaverage(subject, subjects_dir, overwrite=False):
    """Copy fsaverage files for subjects with missing MRI"""
    for this_dir in ['bem', 'surf']:
        bem_dir = os.path.join(subjects_dir, subject, this_dir)
        if not os.path.exists(bem_dir):
# Manual Coregistration -------------------------------------------------------
from mne.viz import plot_trans
from mne.gui import coregistration
if True:
    for meg_subject, subject in zip(range(1, 21), subjects_id):
        if subject in missing_mri + bad_mri:
            continue
        raw_fname = paths('sss', subject=meg_subject, block=1)
        trans_fname = paths('trans', subject=meg_subject)
        # XXX for one subject the HPI were adequately triangulated before the
        # first block
        if subject == 'ps120458':
            raw_fname.split('1-sss.fif')[0] + '2-sss.fif'
        # Manual coregistration
        print(subject, meg_subject)
        coregistration(subject=subject, subjects_dir=subjects_dir,
                       inst=raw_fname)
        # Plot
        info = read_info(raw_fname)
        plot_trans(info, trans_fname, subject=subject, dig=True,
                   meg_sensors=True)


def _copy_from_fsaverage(subject, subjects_dir, overwrite=False):
    """Copy fsaverage files for subjects with missing MRI"""
    for this_dir in ['bem', 'surf']:
        bem_dir = os.path.join(subjects_dir, subject, this_dir)
        if not os.path.exists(bem_dir):
            os.makedirs(bem_dir)
    f_from = os.path.join(subjects_dir, 'fsaverage', 'bem',
                          'fsaverage-5120-bem.fif')
    f_to = os.path.join(subjects_dir, subject, 'bem',