.fif epochs import to Fieldtrip fails about mne-matlab HOT 11 CLOSED

the code around line 46 in fiff_read_epochs reads

%
% Locate the data of interest
%
processed = fiff_dir_tree_find(meas, FIFF.FIFFB_PROCESSED_DATA);
if length(processed) == 0
        fclose(fid);
    error(me,'Could not find epochs data');
end

ep = fiff_dir_tree_find(meas, FIFF.FIFFB_EPOCHS);
if length(ep) == 0
        fclose(fid);
    error(me,'Could not find epochs data');  % LINE 46
end

It seems to me that

1. the file was written incorrectly, or that
2. the file does not contain any epochs, perhaps not even MEG data.

error 2 would be your error (i.e. trying to read the wrong file), error 1 would be an error in the writing code, i.e. in MNE-Python.

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Perhaps you should report it as mne-python issue instead.
@agramfort, what do you think?

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I am sure that my -epo.fif file is OK, since I can browse it in mne-python
and the epochs look as they should. I also used these epochs for source
localization in MNE.
Therefore, it is more likely to be error [1]

Elena

On 25 October 2016 at 12:50, Robert Oostenveld [email protected]
wrote:

the code around line 46 in fiff_read_epochs reads

%
% Locate the data of interest
%
processed = fiff_dir_tree_find(meas, FIFF.FIFFB_PROCESSED_DATA);
if length(processed) == 0
fclose(fid);
error(me,'Could not find epochs data');
end

ep = fiff_dir_tree_find(meas, FIFF.FIFFB_EPOCHS);
if length(ep) == 0
fclose(fid);
error(me,'Could not find epochs data'); % LINE 46
end

It seems to me that

1. the file was written incorrectly, or that
2. the file does not contain any epochs, perhaps not even MEG data.

error 2 would be your error (i.e. trying to read the wrong file), error 1
would be an error in the writing code, i.e. in MNE-Python.

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OK, but I can only do it tomorrow morning.
Elena

On 25 October 2016 at 20:56, Alexandre Gramfort [email protected]
wrote:

elena, can you share the epo.fif file?

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Hi,
Here is the -epo.fif file I was not able to upload to the Fieldtrip.

https://drive.google.com/open?id=0B4vg0ZrqLpGCcnNBODBHSmJFcWM

Best regards,
Elena

On 25 October 2016 at 20:56, Alexandre Gramfort [email protected]
wrote:

elena, can you share the epo.fif file?

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Dear Alex,

How can I try the fixed program? Should I download the new MNE version?

Elena

On 29 October 2016 at 19:40, Alexandre Gramfort [email protected]
wrote:

I think i fixed it in:

https://github.com/mne-tools/mne-matlab/commit/
89a8b65

if you confirm it works I'll open a PR on fieldtrip.

it's our mess with change/fix of FIFF constants.

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Thank you!
It worked.

Elena

On 1 November 2016 at 14:18, Alexandre Gramfort [email protected]
wrote:

just get the latest mne-matlab toolbox at:

https://github.com/mne-tools/mne-matlab/archive/master.zip

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see fieldtrip/fieldtrip#250

closing.

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