[FieldTrip] plotting clusters

[Stephen Whitmarsh]

Hi Mubeen,

The cfg.foi field specifies the frequency *range* in Hz, so the first
option you mention.

This is described in the header of the function ft_selectdata, where you
can always find a clear description of the input/output of FieldTrip
functions:
% cfg.frequency = scalar or string, can be 'all', or [beg end], specify
frequency range in Hz

Cheers,
Stephen

On Tue, 29 Mar 2022 at 10:55, mubeen afzal via fieldtrip <
fieldtrip at science.ru.nl> wrote:

> Thanks Jan will do. Can I ask if the specification of avgoverfrequency
> actually averages powspctrm values in all frequency bins if foi is [2 6] or
> looks at only 4hz the average of 2+6/2. The output says 1 frequency bin and
> stat.freq shows 4 in output when aevraging is done meaning does it only
> look at 4Hz frequency?
>
> Regards
> Mubeen J
>
>
>
> Get Outlook for iOS <https://aka.ms/o0ukef>
> ------------------------------
> *From:* fieldtrip <fieldtrip-bounces at science.ru.nl> on behalf of
> Schoffelen, J.M. (Jan Mathijs) via fieldtrip <fieldtrip at science.ru.nl>
> *Sent:* Tuesday, March 29, 2022 6:07:37 PM
> *To:* FieldTrip discussion list <fieldtrip at science.ru.nl>
> *Cc:* Schoffelen, J.M. (Jan Mathijs) <janmathijs.schoffelen at donders.ru.nl>
> *Subject:* Re: [FieldTrip] plotting clusters
>
> Hi Mubeen,
>
> @1 and @2: Perhaps you can start by studying the documentation on internet:
>
>
> https://www.fieldtriptoolbox.org/tutorial/cluster_permutation_timelock/
> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.fieldtriptoolbox.org%2Ftutorial%2Fcluster_permutation_timelock%2F&data=04%7C01%7C%7C648907107d354f14c1b008da11579901%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637841365169980738%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=yYGC6%2BcbFuYKiPQojXCx7HKKw39%2FwbTtJtR1fgDZfDg%3D&reserved=0>
>
> The output data object is quite extensively described.
>
> @3: the error message is quite clear I think, so the answer would be ’no’,
> unless you squeeze out either the frequency or time dimension. This can be
> done with ft_selectdata, and an appropriate specification of the input cfg.
> Please refer to the function’s help to get you on the way.
>
> Best wishes,
> Jan-Mathijs
>
>
> On 28 Mar 2022, at 17:20, mubeen afzal via fieldtrip <
> fieldtrip at science.ru.nl> wrote:
>
> Hi fieldtrip team,
>
> I would like to know how to learn more on cluster permutation performed on
> two groups.
>
>    1. what do positive and negative clusters represent
>    2. what is posclusterslabelmat represent
>    3. is there a way to plot positive clusters after wavelet analysis
>    comparisons between two groups without specifying time or frequency as I am
>    getting this error message: *'this only works if either frequency or
>    time is a singleton dimension'*
>
> my data currently is comparing frequencies between 2 and 6 Hz for time
> segments 0:0.2:5 seconds across 19 channels in two groups
>
> Thanks for any help
> Mubeen
> <image.png>
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