[FieldTrip] errors replicating Salzburg Fieldtrip tutorial

[Tzvetan Popov]

Dear Irene,

I can not reproduce your error. The example code computes correctly. My ft_version is 20190419

Best
Tzvetan

> Am 22.05.2019 um 09:42 schrieb Irene Varela Leniz <irene.varela at alumni.mondragon.edu>:
> 
> Dear Shoffelen, 
> 
> I am working with last Fieldtrip and MATLAB version so I'm afraid that's not the problem.
> 
> Best wishes, 
> 
> Irene
> 
> El mié., 22 may. 2019 a las 9:38, Schoffelen, J.M. (Jan Mathijs) (<jan.schoffelen at donders.ru.nl <mailto:jan.schoffelen at donders.ru.nl>>) escribió:
> Hi Irene,
> 
> Please check which version of the code you are using, and update to a more recent version to FieldTrip, and try again. The line + error you report does not match the ones in the current version of Fieldtrip.
> 
> Best wishes,
> Jan-Mathijs
> 
> 
> 
>> On 22 May 2019, at 09:21, Irene Varela Leniz <irene.varela at alumni.mondragon.edu <mailto:irene.varela at alumni.mondragon.edu>> wrote:
>> 
>> Dear Fieldtripers, 
>> 
>> I am trying to replicate the well-known tutorial:salzburg [FielTrip] (http://old.fieldtriptoolbox.org/tutorial/salzburg <http://old.fieldtriptoolbox.org/tutorial/salzburg>). Anyway, I am getting some errors that I could not manage to solve. I would be really grateful if someone could lend me a hand.
>> 
>> I am working on section called "Localizing auditory evoked fields using beamforming techniques in parceled brain space". I managed to compute the sourcemodel as explained in the tutorial without any problem. But now, when "Computing the leadfield" I get an error message related with sourcemodel.inside field, which makes it impossible for me to create the leadfield. The structure is the following:
>> 
>> sourcemodel =
>>   struct with fields:
>>        pos: [6426×3 double]
>>        dim: [17 21 18]
>>       unit: 'm'
>>     inside: [17×21×18 logical]
>>        cfg: [1×1 struct]
>> 
>> The structure for computing the leadfield:
>> 
>>                         cfg                 = [];
>>                         cfg.label         = data.label;
>>                         cfg.elec          = data.elec;
>>                         cfg.vol         = hdm;
>>                         cfg.lcmv.reducerank = 2; % I am working with EEG data
>>                         cfg.grid = sourcemodel;
>>                         [grid] = ft_prepare_leadfield(cfg)
>> 
>> An the error I get:
>> 
>> Operands to the || and && operators must be convertible to logical scalar values.
>> 
>> Error in ft_checkconfig (line 529)
>>   elseif isfield(cfg, 'grid') && isfield(cfg.grid, 'inside') && any(cfg.grid.inside>1)
>> 
>> Error in ft_prepare_leadfield (line 156)
>> cfg = ft_checkconfig(cfg, 'inside2logical', 'yes');
>> 
>> I think the error comes from the fact that sourcemodel.inside is a 3-dimensional logical array. The operation - any(cfg.grid.inside>1)   does not output a logical scalar value because sourcemodel.inside is in 3 dimensions. 
>> So far I have always worked with models whose inside parameter was of one dimension. Anyway, I'm not sure if this is the problem, please correct me if I'm wrong.
>> 
>> Has anyone encountered this same problem, and does anyone know how to fix it?  
>> 
>> Thank you very much for your attention, 
>> 
>> 
>> Irene
>> 
>> 
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> 
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