[FieldTrip] Problem running tutorial

[Stephen Whitmarsh]

Dear Dan,

Yes, its your old matlab version; isfolder is a later MATLAB function. Can
you get yourself an upgrade? Usually, your license will permit that, or
your university would be able to do so. Matlab has improved a lot since,
and in and case it will be increasingly difficult to keep things backwards
compatible.

Cheers,
Stephen

On Thu, 22 Aug 2019, 22:59 Dillon, Daniel G., <ddillon at mclean.harvard.edu>
wrote:

> Hi everyone. I’m new to FieldTrip and am excited to try it but I can’t get
> the tutorials started. I’ve downloaded fieldtrip-20190819 and I’m running
> MATLAB_R2015b. I’m trying to run the “Trigger-based trial selection
> tutorial” (http://www.fieldtriptoolbox.org/tutorial/preprocessing/), but
> when I type “ft_definetrial(cfg)” in MATLAB it returns the long error
> pasted at the end of this email. It looks like there is a problem with the
> “isfolder” function, and since the warning message points me to the
> documentation about setting paths (http://bit.ly/2SPPjUS), I also tried
> re-setting everything by typing this . . .
>
>
>
> >> restoredefaultpath
>
> >> addpath /Applications/MATLAB_R2015b.app/toolbox/fieldtrip-20190819/
>
> >> ft_defaults
>
>
>
> . . . but I get the same error message. I think this may be a backwards
> compatibility issue but I’m not sure how to troubleshoot it. Can anyone
> point me in the right direction?
>
>
>
> Thanks!
>
>
>
> Dan Dillon
>
> McLean Hospital
>
>
>
>
>
>           *Here’s the error message*:
>
>
>
>           Warning: removing
>
> "/Applications/MATLAB_R2015b.app/toolbox/fieldtrip-20190819/compat/matlablt2017b"
> from your path,
>
> see http://bit.ly/2SPPjUS
>
> > In isfolder (line 21)
>
>   In ft_version (line 64)
>
>   In ft_preamble_init (line 50)
>
>   In ft_preamble (line 83)
>
>   In ft_definetrial (line 128)
>
> Error using feval
>
> Undefined function 'isfolder' for input arguments of type 'char'.
>
>
>
> Error in isfolder (line 27)
>
>     [varargout{1:nargout}] = feval(mfilename, varargin{:});
>
>
>
> Error in ft_version (line 64)
>
>   issvn = isfolder(fullfile(ftpath, '.svn'));
>
>
>
> Error in ft_preamble_init (line 50)
>
> [FjmoT6aA_ft_ver, FjmoT6aA_ft_path] = ft_version;
>
>
>
> Error in ft_preamble (line 83)
>
> evalin('caller', full_cmd);
>
>
>
> Error in ft_definetrial (line 128)
>
> ft_preamble init
>
>
> _______________________________________________
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> https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
> https://doi.org/10.1371/journal.pcbi.1002202
>
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