[FieldTrip] Data browser trouble

[Per Knutsen]

Oops, seems I was too quick to ask for help. I traced the error to my trial
definitions which were not specified as integer samples. That led to the
"​Size inputs must be integers" error below.

Might it be an idea to place a check for integer values in cfg.trl when
passed to ft_redefinetrial()?

- Per

On Fri, Oct 14, 2016 at 10:43 AM, Per Knutsen <knutsenpm at gmail.com> wrote:

> Hi,
> My calls to ft_databrowser([], data) is failing with:
>
> >the input is raw data with 16 channels and 10 trials
> >detected   0 visual artifacts
> >Error using zeros
> >
> ​​
> Size inputs must be integers.
> >Error in convert_event>artifact2artvec (line 179)
> >artvec = zeros(length(artifact), endsample);
> >Error in convert_event (line 103)
> >   obj = artifact2artvec(obj,endsample);
> >Error in ft_databrowser (line 535)
> >artdata.trial{1}       = convert_event(artifact, 'boolvec', 'endsample',
> datendsample); % every >artifact is a "channel"
>
> I am not certain if this is triggered by a lack of artifacts in my data,
> that my data structure is missing information, or that the code does not
> allow for "zero artifacts" by design.
>
> Here is my data structure:
>
> data =
>            hdr: [1x1 struct]
>        fsample: 4800
>     sampleinfo: [10x2 double]
>          trial: {1x10 cell}
>           time: {1x10 cell}
>          label: {16x1 cell}
>            cfg: [1x1 struct]
>
> My data is loaded through a custom reader as the data format I have is not
> supported natively by fieldtrip.
>
> I have succeeded in pre processing the data with ft_redefinetrial() and
> ft_preprocessing().
>
> Any ideas?
>
>
> *Per M Knutsen*
> University of Oslo
> Dept. of Molecular Medicine, Physiology Sect.
> PB 1103 Blindern, NO-0317 Oslo
> +47.45103762
>
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