[FieldTrip] Problems with ft_channelrepair

[Gema Mijancos]

Hi Jan-Mathijs,

Thank you so much for your reply! Nevertheless, I still get the same error.
I would look more into it.

Best regards,

Gema

El vie, 28 may 2021 a las 21:07, Schoffelen, J.M. (Jan Mathijs) via
fieldtrip (<fieldtrip at science.ru.nl>) escribió:

> Hi Gema,
>
> It seems that ft_channelrepair is in the air today. Just for the record,
> this will be the last e-mail I will answer on the discussion list today,
> specifically one about ft_channelrepair…
>
> I think that using the non-preferred ‘weighted’ method in ft_channelrepair
> does not require an elec description. However, you should specifiy
> cfg.badchannel as a cell-array (at least that’s what I gather from the
> function’s help, and what I think I understand from the low level errors
> you report).
> In other words, rather than cfg.badchannel = ‘C1’, you should call
> cfg.badchannel = {‘C1’};
>
> Then I would think that the following could work...
>
>> *cfg = [];*
>> *cfg.method = **'weighted'**;*
>> *cfg.badchannel = {**‘C1'}*
>> *; cfg.neighbours = neighbours;*
>> *cfg.trials = **'all'**;*
>> *interp = ft_channelrepair(cfg, data_tms_raw_sim);*
>>
>
> Best wishes,
> Jan-Mathijs
>
>
> On 28 May 2021, at 20:59, Gema Mijancos via fieldtrip <
> fieldtrip at science.ru.nl> wrote:
>
>
>
> El El mié, 14 abr 2021 a las 17:55, Gema Mijancos <gemamm98 at gmail.com>
> escribió:
>
>> Dear community,
>>
>>
>> My name is Gema Mijancos Martínez and I am working at UPC (Univeristat
>> Politècnica de Catalunya). Currently we are analysing TMS-EEG signals.
>>
>> I have a bad channel that I would like to repair, using ft_channelrepair.
>>
>>
>> This is the code that I used:
>>
>> *cfg = [];*
>> *cfg.channel = **'all'*
>> *cfg.method = **'distance'**;*
>> *cfg.layout = **'elec1010'**;*
>> *cfg.neighbourdist = 10;*
>> *neighbours = ft_prepare_neighbours(cfg, data_tms_raw_sim);*
>>
>> *cfg = [];*
>> *cfg.method = **'weighted'**;*
>> *cfg.badchannel = **'C1'*
>> *; cfg.neighbours = neighbours;*
>> *cfg.trials = **'all'**;*
>> *interp = ft_channelrepair(cfg, data_tms_raw_sim);*
>>
>>
>>
>> As I do have a channel (is not a missing one) I did not include cfg.elec
>> into the cfg (because reading the documentation it does not say is
>> compulsory to add it). However, I get the following error, which I think is
>> related to cfg.elec. I do not understand why I get this error:
>>
>>
>> *Error in ft_channelrepair (line 136)*
>>
>> *    sens = ft_fetch_sens(cfg, data);*
>>
>>
>> Nevertheless, I decided to include cfg.elec:
>>
>> *cfg.elec = **'C:\Users\MIJANCOS MARTINEZ 2\Desktop\BECA\MATLAB
>> CODE\Scripts\Channel_info_EEG_64_sens'**);*
>>
>> which is a matlab strcutrure containing the label of the channel, their
>> position and the position of the electrodes (information needed by
>> ft_datatype_sens: sens.lablel, sens.chanpos and sens.elecpos).
>>
>>
>> However, when I run this code, I get another error:
>>
>>
>> *Error using cell/unique>celluniqueR2012a (line 249)*
>>
>> *Elements of cell array input A must be character vectors (row vectors of
>> class char).*
>>
>> *Error in cell/unique (line 142)*
>>
>> *        [varargout{1:nlhs}] =
>> celluniqueR2012a(varargin{1},logical(flaginds(1:5)));*
>>
>> *Error in cell/setdiff>cellsetdiffR2012a (line 303)*
>>
>> *    uA = unique(a,order);*
>>
>> *Error in cell/setdiff (line 129)*
>>
>> *        [varargout{1:nlhs}] =
>> cellsetdiffR2012a(varargin{1:2},logical(flaginds(1:3)));*
>>
>> *Error in ft_channelrepair (line 162)*
>>
>> *cfg.missingchannel = setdiff(cfg.missingchannel, data.label, 'stable');*
>>
>> *Error in Preprocessing_TMS_EEG (line 137)*
>>
>> *    [interp] = ft_channelrepair(cfg, data_tms_raw_sim);*
>>
>>
>> I have read some threads regarding this issue, and one of the solutions
>> was to use cfg.layout instead of cfg.elec. Thus, I used the easycap-M10.txt
>> available in Fieldtrip/template but I get the same error as before.
>>
>>
>> I would really appreciate if anyone could provide some help in
>> understanding why I need to provide cfg.elec (which it is what I need to
>> do, perhaps I am wrong in my initial assumption) and why I am getting the
>> errors that I just mentioned.
>>
>>
>> Best regards,
>>
>>
>> Gema Mijancos
>>
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