[FieldTrip] layout file from beamformer

[Julian Keil]

Dear Tyler,

I recently had a similar problem.

I solved this by plotting the x,y,z-coordinates of all dipoles within the BEM-Model and assign a color value depending on the power value to the dipole markers.

In short: use ft_triplot to plot the mesh of the BEM. Then select the .pos-field of the dipoles inside your volume and plot them with plot3.
In the plot3-step, you can assign each dipole a 'Color'-property based on your power or stats value.

Alternatively, you can use ft_prepare_layout to get a planar projection of your sources, but at least in my case it did not look too good.

Hope that helps, if you want to, I can send you an example of what the plots look like.

Best,

Julian
 
Am 23.05.2014 um 04:10 schrieb Tyler Grummett:

> Hello fieldtrippers,
> 
> I am trying to create a layout file that has the positions of the beamformer sources.
> 
> The output of my beamformer analysis was 1400 channels and I am trying to create a layout file with certain position which correspond to certain sources.
> 
> For example, if I wanted to plot 30 sources and all I had were the x y z position.
> 
> I am hoping that this made sense, I cant quite work out what I should be asking for. I have worked out how to plot the power of the sources, but 
> ft_topoplotIC is asking for a layout file (after I ran an ICA over it), which I cant work out how to make.
> 
> Tyler
> 
> *************************
> 
> Tyler Grummett ( BBSc, BSc(Hons I))
> PhD Candidate
> Brain Signals Laboratory
> Flinders University
> Rm 5A301
> Ext 66124
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> fieldtrip at donders.ru.nl
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