[Mne_analysis] derived channel in python

[Denis-Alexander Engemann]

Hi,

2014-12-13 0:22 GMT+01:00 Le Wang <lwang at bu.edu>:
>
> Thanks for the reply, Alex!
>
> The post in your link seems to be talking about re-referencing, which is
> also a nice feature to include.
>

Maybe some terminological problem


> But what I was thinking about was to take the difference between a pair of
> channels (to get the saccade signal, for example)  and do some further
> processing (ie., saccade detection) with the derived signal. I guess I can
> always do that using a separate numpy array, but it seems more elegant to
> be able to save the derived signal in the raw object as a derived channel.
>
>
I think this exact use case gave rise to PR #1670

If I'm not mistaken this should allow you to do exactly what you described.

HTH,
Denis


> Is this something a work in progress?
>
> Thanks again!
>
> Le
>
> On Fri, Dec 12, 2014 at 5:05 PM, Alexandre Gramfort <
> alexandre.gramfort at telecom-paristech.fr> wrote:
>
>> hi,
>>
>> it's on the way for MNE-Python:
>>
>> https://github.com/mne-tools/mne-python/pull/1670
>>
>> you can try the PR or just wait a few more days :)
>>
>> Alex
>>
>>
>> On Fri, Dec 12, 2014 at 10:32 PM, Le Wang <lwang at bu.edu> wrote:
>> > Hi, MNEers,
>> >
>> > I know I can create derived channels in the compile version using
>> > mne_make_derivations. I am just wondering if there's a way to make
>> derived
>> > channels in MNE python. I searched the mailinglist and didn't find
>> anything.
>> >
>> > Thanks!
>> >
>> > Best
>> > Le
>> >
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