[FieldTrip] errors replicating Salzburg Fieldtrip tutorial

[Irene Varela Leniz]

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>) 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> wrote:
>
> Dear Fieldtripers,
>
> I am trying to replicate the well-known *tutorial:salzburg [FielTrip] (*
> 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
> *sourcemode*l 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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> https://doi.org/10.1371/journal.pcbi.1002202
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>
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