[FieldTrip] cfg.trialfun in realtime functions

[Hamza Fawzi Altakroury (Student)]

Hello again

Realtime functions should work if I define the function as:

cfg.trialfun = 'trialfun_general';

Right?

Hamza

On Sun, May 13, 2012 at 5:46 PM, Hamza Fawzi Altakroury (Student) <
hamzaf at sabanciuniv.edu> wrote:

> Thank you for your help Stephen
>
> Hamza
>
>
> On Thu, May 10, 2012 at 4:07 PM, Stephen Whitmarsh <
> stephen.whitmarsh at gmail.com> wrote:
>
>> Hi Hamza,
>>
>> I just saw you've been posting on the FT list for quite a while and
>> have been working on offline analysis already. To answer your question
>> more specifically: The trialfunction could be very simple in the first
>> instance, but is needed to know what samples to read when
>> preprocessing the data. You can find some examples here that you can
>> adapt to your own purpose here:
>>
>> http://fieldtrip.fcdonders.nl/example/making_your_own_trialfun_for_conditional_trial_definition
>>
>> Cheers,
>> Stephen
>>
>> On 10 May 2012 14:51, Stephen Whitmarsh <stephen.whitmarsh at gmail.com>
>> wrote:
>> > Dear Hamza,
>> >
>> > The trialfunction is an integral part of processing data in FieldTrip.
>> > It is how you define your timepoints of interest, i.e. trials based on
>> > recorded markers in your data, or based on user-defined events (e.g.
>> > sleep stages).
>> >
>> > If you are not yet familiar with the basic FieldTrip operations the
>> > documentation of the realtime analysis  might indeed seem somewhat
>> > inadequate as it assumes this familiarity. FieldTrip's online analysis
>> > tools are using many of the same functions of the offline ones, and
>> > has a similar overall philosophy and approach. This makes it
>> > relatively easy to understand and to use online analysis approach once
>> > one is familiar with the offline one. Alas this translation is
>> > assymmetric and doesn't hold for the other way around.
>> >
>> > The good news is, however, that everything is there to get you on your
>> > way once your take a little detour. You could take a look at the
>> > tutorial documentation (http://fieldtrip.fcdonders.nl/tutorial) and
>> > get a bit of hands-on working through some steps with the supplied
>> > tutorial-data.
>> >
>> > Specifically for your question these pages would be relevant:
>> >
>> http://fieldtrip.fcdonders.nl/example/getting_started_with_reading_raw_eeg_or_meg_data
>> > http://fieldtrip.fcdonders.nl/tutorial/preprocessing
>> > http://fieldtrip.fcdonders.nl/tutorial/continuous
>> >
>> > For more overview and general operations I would advice reading through:
>> > http://fieldtrip.fcdonders.nl/walkthrough
>> >
>> > Most of all it might not be a bad idea to start with a pre-recorded
>> > dataset and work on it offline, using the more standard and more
>> > extensively documented offline functions for e.g. trial based
>> > averaging. Once that works out for you can adapt it to the realtime
>> > situation.
>> >
>> > Hope this helps,
>> > Stephen
>> >
>> > On 10 May 2012 13:55, Hamza Fawzi Altakroury (Student)
>> > <hamzaf at sabanciuniv.edu> wrote:
>> >> Hello,
>> >>
>> >> I don't know why should I define a function inside the
>> >> ft_realtime_selectiveaverage.
>> >> I just want to make an average of some segments.
>> >>
>> >> Could you provide me with an example of cfg.trialfun
>> >>
>> >> Hamza
>> >>
>> >>
>> >> On Wed, May 9, 2012 at 11:33 AM, Hamza Fawzi Altakroury (Student)
>> >> <hamzaf at sabanciuniv.edu> wrote:
>> >>>
>> >>> Hello,
>> >>>
>> >>> I am doing realtime processing, and I wanted to check
>> ft_realtime_average
>> >>> function and ft_realtime_selectiveaverage functions.
>> >>>
>> >>> I faced a problem in defining cfg.trialfun
>> >>>
>> >>> Could you help me
>> >>>
>> >>> Best
>> >>>
>> >>> --
>> >>> Hamza Fawzi Altakroury
>> >>> Graduate student - MA
>> >>> Faculty of Engineering and Natural Sciences
>> >>> Sabancı University
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >> Hamza Fawzi Altakroury
>> >> Graduate student - MA
>> >> Faculty of Engineering and Natural Sciences
>> >> Sabancı University
>> >>
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>>
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>
>
>
> --
> Hamza Fawzi Altakroury
> Graduate student - MA
> Faculty of Engineering and Natural Sciences
> Sabancı University
>



-- 
Hamza Fawzi Altakroury
Graduate student - MA
Faculty of Engineering and Natural Sciences
Sabancı University
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