[FieldTrip] Missing templates for planar gradients

[Fairs, Amie]

Dear FieldTrip list,

Apologies for what seems like a silly question. I am calculating the planar gradient for my MEG data because it was recorded from axial gradiometers (on a CTF system with a 275 layout). I'm following the FieldTrip tutorial to calculate the planar gradient, and I would like to use the method 'template' to do so, and then specify a pre-existing template. From reading about which templates are shipped with FieldTrip (http://www.fieldtriptoolbox.org/template/neighbours) I think a bunch of templates should be found in FieldTrip, including the CTF 275 neighbourhood template. However, in my FieldTrip version there are no templates (the template folder is just empty). When I run ft_prepare_neighbours, specifying cfg.template = 'template' and cfg.template = 'CTF275_neighb.mat', I get an error message saying 'Template file could not be found'. Does anyone know where I can get hold of this template? I can't find a way to download other than downloading a new version of FieldTrip and seeing if it is there.

The FieldTrip version I am using is fieldtrip-20170918 (so much after the 2011 template intro), on a Windows 7 computer, and matlab R2016a.

I also calculated the planar gradient using the method 'triangulation' to check it isn't a data bug somehow, but that works perfectly fine (though I'd prefer the template option).

Best,

Amie

-----------------------------------------------------
Amie Fairs
PhD candidate
International Max Planck Research School for Language Sciences
Max Planck Institute for Psycholinguistics
PO Box 310 | 6500 AH Nijmegen | The Netherlands
Email: amie.fairs at mpi.nl<mailto:amie.fairs at mpi.nl> | Phone: +31(0)243521381

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