multiplotER and Neuromag data

[Gianpaolo Demarchi]

Dear Stephan,
thanks for your 'patch' !
It works, i.e. I get a multiplotER graph with some data in it!
With "your version" at least we get back a multiplot, with sadly the
gradiometers and magnetometers data overlapped. The 'old' way was plotting
them arranged in triplets, with one magnetometer and the two gradiometers
'clustered' together. I checked the 'old' prepare_layout.m, and in fact in the
grad2lay() function  there was a 'finer grained' check of the sensor type,
including 	a different/better layout for 'neuromag306' case.
Anyway, there must be a reason for choosing this option (probably the old
arrangement with mag+2grads sublopts was too crowded, and probably useless),
and in case we can still make two different multiplotERs for magnetometers and
gradiometers ...
Thanks again,
Gianpaolo

PS: should this one be considered a 'patch' for a 'bug', and go upstream in
the official  fieldtrip release?

> I had the same problem as you. The probel lies in the ft_prepare_layout.m
> function. It calculates the minimum distance between sensors. As the
> neuromag sensor has different types of sensors, the layout puts the 3
> different sensors at the same place. So calculating the min(d(:)) results
> in 0 values. Please find below the modified subfunction sens2lay that is
> located in ft_prepare_layout.m that prevents this error. With that, the
> topoplots (and multiplots) should work out. Maybe this error can be
> prevented in a more elegant way that I did.
>
> Best,
>
> Stephan

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.