Brainvision stim channel creation fails if event durations are 0

Stim channels for brainvision and EEGLAB files are created like this:

    for onset, duration, trigger in events:
        stim_channel[onset:onset + duration] = trigger

If the duration is 0, which it often is, this will result in no events being recorded.

I am not sure how to deal with this.

The events are still available to the user at raw._events, but mne.find_events etc won’t work.

[jona-sassenhagen]

BV vmrk files have a duration column that is set to 0 for the file I’m looking at … but yeah, we can, i.e., change

    for onset, duration, trigger in events:
        stim_channel[onset:onset + duration] = trigger

to

    for onset, duration, trigger in events:
        stim_channel[onset:onset + (duration if duration > 0 else 1)] = trigger

and add a test.

(Thinking of Cornelius here 😃)

[larsoner]

we should probably make the min duration 1 sample