mne-tools / mne-matlab Goto Github PK

forward operator should not be aware of bad channels

I thought we had it already. ...

cc @agramfort

Hi MNE-matlab team,

Thanks for providing us this useful tools!

Recently I tried to read fif raw file via Brainstorm and got some error messages (as shown below). The message may indicate that the function in MNE-matlab "fiff_read_meas_info" called by in_fopen_fif.m may not read all required information from my fif files. Also, I got the same error message when I tried to read those fif files that I have ever successfully imported 6 month ago.

** Error: Line 131: Reference to non-existent field 'meas_date'.
**
** Call stack:
** >in_fopen_fif.m at 131
** >in_fopen.m at 68
** >import_raw.m at 126
** >bst_call.m at 28
** >tree_callbacks.m>@(h,ev)bst_call(@import_raw,[],[],iSubject) at 636

The following link can download a emptyroom fif file that was recorded. (Sorry. Because of the privacy issue, I could only provide the emptyroom data.)
https://drive.google.com/file/d/13MmoEk58t87w85_3PPF4-Hy_AeWL1gLa/view?usp=sharing

Could you please help me to figure out whether I did anything wrong?

Thank you very much!

Best,
Ling

Hello,
I try to read in matlab (with the mne-matlab tool) a source created in MNE-python with the additional information of patch.
I use in python the command mne.setup_source_space(sj, fname=True, spacing='ico4', subject_dir=<my_path>, add_dist=True), followed by mne.write_source_spaces(...) to have the fif file with patch information.
But when I read the file in matlab there isn't any information about the patch, i.e. the values nearest, nearest_info, pinfo, dist and dist_limit are empty.

Then I try to rewrite the file using one more step in python:
mne.read_source_spaces(..., patch_stats=True, ...) followed by mne.write_source_spaces(...)
and in this case when I try to read the fif file in matlab an error was reported:

Error using fiff_read_tag (line 178)
Only two and three dimensional matrices are supported at this time

How can I solve the problem? Because I need the patch information for my work at this step in matlab.

Hello,
CC @robertoostenveld, @agramfort

This is MNE-Fieldtrip format compatibility issue.

I tried to import -epo.fif file created in MNE python, latest version on today (v13) using fieldtrip cookbook:

%%%%%%%%%%%%%%%%%%%%%%%
fiff_file = '/MYPATH/myfile-epo.fif';
cfg = []
cfg.dataset = fiff_file;
data1 = ft_preprocessing(cfg);
%%%%%%%%%%%%%%%%%%%%%%%

I got en error:
Reference to non-existent field 'FIFFB_EPOCHS'.

Error using fiff_read_epochs (line 46)
Could not find epochs data

Error in fiff_read_epochs (line 46)
error(me,'Could not find epochs data');

Error in ft_read_header (line 1665)
epochs = fiff_read_epochs(filename);

Error in ft_preprocessing (line 397)
hdr = ft_read_header(cfg.headerfile, 'headerformat', cfg.headerformat, 'coordsys', cfg.coordsys, 'coilaccuracy', cfg.coilaccuracy);

I use the latest Fieldtrip version fieldtrip-lite-20161024. It seems that something is wrong with the data structure...?

Elena Orekhova

I try to read events from MNE-sample-data. The events can be loaded in MNE-Python version. However, with the same data set the error message "Could not find events" was printed in Matlab version.

fname = 'sample_audvis_filt-0-40_raw.fif';
[events, mappings] = fiff_read_events(fname);

Both line 38 and 52 in fiff_read_events.m, it seems that the FIFF predefined constants are not match to the data?