[Mne_analysis] merge/combine events MNE Python
Mainak Jas
mainakjas at gmail.com
Thu Feb 18 05:22:18 EST 2016
Dear Lucy,
It seems what you want to do is to use the hierarchical epochs selection.
If you have an epochs object which contains condA, condB, condC and condD,
you can get epochs of condE by simply using epochs['condA', 'condB'].
Please take a look at the MNE reference API for the epochs object:
http://martinos.org/mne/stable/generated/mne.Epochs.html#mne.Epochs (look
at the Notes section). Does this solve your problem?
Best regards,
Mainak
On Thu, Feb 18, 2016 at 10:27 AM, Lucy MacGregor <
Lucy.MacGregor at mrc-cbu.cam.ac.uk> wrote:
> Dear MNE Python users,
>
>
>
>
>
> I would like to combine event codes to create a number of new events
> whilst retaining the originals. E.g.,
>
>
>
> CondA = 11
>
> CondB = 12
>
> CondC = 13
>
> CondD = 14
>
> CondE = 11,12
>
> CondF = 13,14
>
>
>
>
>
> Is there a straightforward way to do this? I have seen this thread
>
>
>
>
> https://mail.nmr.mgh.harvard.edu/pipermail//mne_analysis/2013-April/001498.html
> <https://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/2013-April/001498.html>
>
>
>
>
>
> Using mne.event.merge_events works fine when I was just creating one new
> event (as does the alternative method of combining events at the evoked
> stage) but I’m unsure of the most sensible way to proceed given I want to
> create multiple new events. I originally did this:
>
>
>
> events=mne.event.merge_events(events, [11,12], 1112, replace_events=False)
>
> events=mne.event.merge_events(events, [13,14], 1314 replace_events=False)
>
>
>
> but then, because I’m not replacing events, I end up with multiple copies
> of all events (even those not included in the merge_events function) at a
> given sample point, which isn’t ideal.
>
>
>
> As a new MNE Python user (I previously used MNE) I would be grateful for
> any advice as the best way to do this.
>
>
>
>
>
> Thank you,
>
>
>
> Lucy MacGregor
>
>
>
>
>
> ******************************************************************
>
> Lucy MacGregor
>
> MRC Cognition and Brain Sciences Unit
>
> 15 Chaucer Road
>
> Cambridge CB2 7EF
>
> Tel: 01223 355294 Ext 860
>
> http://www.mrc-cbu.cam.ac.uk/people/lucy.macgregor/
>
>
>
>
>
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