error when there is a .vmrk file but it has no markers inside

[amisepa]

I am trying to load these iEEG data (https://nemar.org/dataexplorer/detail?dataset_id=ds005953), which contain events in a tsv file instead of in the .vmrk file. But I am getting this error when MRK returns empty output:

Output argument "EVENT" (and possibly others) not assigned a value in the execution with "parsebvmrk" function.

Error in [pop_loadbv](matlab:matlab.lang.internal.introspective.errorDocCallback('pop_loadbv', '/Users/cedriccannard/Documents/MATLAB/eeglab/plugins/bva-io1.73/pop_loadbv.m', 398)) ([line 398](matlab: opentoline('/Users/cedriccannard/Documents/MATLAB/eeglab/plugins/bva-io1.73/pop_loadbv.m',398,0)))
EEG.event = parsebvmrk(MRK);

I've added a try - catch locally for that section of the code and it solved the issue. But would be good to add it to the main branch.

Cedric

[widmann]

Personally, I try to avoid using try-catch. Debugging can be a real nightmare.

The canonical way would be to check whether the markerinfos field is empty. Changing line 397 to:

if isfield(MRK, 'markerinfos') && ~isempty(MRK.markerinfos)

would be sufficient.

[amisepa]

Hi!
Sure, that was a quick fix but I agree that's better.
Would it be possible to update it on the master branch and make a new EEGLAB release?
I'm considering using this dataset for a tutorial for a new EEGLAB plugin.

[widmann]

Arno, any comments or objections?

[widmann]

I will be on holiday, so I commited without Arno's explicit approval. Please feel free to undo.

[arnodelorme]

I have updated the plugin manager. Thanks Andreas for issuing a new release. https://sccn.ucsd.edu/eeglab/plugin_uploader/plugin_list_all.php

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On Oct 16, 2025, at 12:19, widmann ***@***.***> wrote: widmann left a comment (sccn/bva-io#23) I will be on holiday, so I commited without Arno's explicit approval. Please feel free to undo. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>