[FieldTrip] Channel interpolation error

[MILÁN MAILLO, IRIS]

Hi everyone,
I am trying to interpolate some noisy channels but I keep getting an error
I am not able to solve. Here is my code:

%prepare neighbours
cfg = [];
cfg.method = 'distance';
cfg.channel = 'all';
cfg.layout = 'acticap-64ch-standard2.mat';
cfg.feedback ='yes';
neighbours = ft_prepare_neighbours(cfg, data_ica_cleaned);

% interpolate noisy channels
cfg = [];
cfg.badchannel     = {'F8','FT9','FT7'};
cfg.method         = 'weighted';
cfg.neighbours     = neighbours;
cfg.elecfile = 'acticap-64ch-standard2.mat';
interpolated_data = ft_channelrepair(cfg,data_ica_cleaned);

And the error I get is this:

Undefined function or variable 'lab'.
Error in channelposition (line 331)
n = size(lab,2);
Error in ft_datatype_sens (line 350)
        [chanpos, chanori, lab] = channelposition(sens);
Error in ft_datatype_sens (line 158)
    sens = ft_datatype_sens(sens, 'version', '2011v2');
Error in ft_read_sens (line 475)
sens = ft_datatype_sens(sens);
Error in ft_fetch_sens (line 150)
  sens = ft_read_sens(cfg.elecfile);
Error in ft_channelrepair (line 129)
    sens = ft_fetch_sens(cfg, data);


I don't know if I'm getting this error because I haven't defined the
structure for EEG channels (sens.label, sens.chanpos, sens.elecpos,
sens.tra), but I haven't done it because I'm not really sure of how to do
it.

Could anyone help me?
Thanks a million!!

*Iris Milán Maillo*

PhD Student
Speech Production and Bilingualism (SPB) <https://www.upf.edu/web/spb>
Center for Brain and Cognition (CBC) <http://cbc.upf.edu/cbc.upf.edu/>
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https://doi.org/10.1371/journal.pcbi.1002202