[FieldTrip] Leadfield and source contain NaN

["Jörn M. Horschig"]

Dear Azeez,

some gridpoints might fall outside the head, thus no source activity is 
computed and the respective value is set to nan. In your grid or 
leadfield-structure you got the fields .inside and .outside. You can use 
these as indices to find the respective values of sourceactivity only 
inside (or outside) the brain. You can use the indices in analog to this 
example:
http://fieldtrip.fcdonders.nl/tutorial/beamformingextended#computing_the_sourcemodel
(see the call to ft_plot_mesh)

Best,
Jörn

On 12/13/2013 7:06 PM, Azeez Adebimpe wrote:
> Dear All,
>
>  I calculated leadfield  with 64 electrodes but majority of part of 
> leadfield.leadfield consist of NaN and some with values and I ensured 
> the electrode is projected on the head (but some not touching the head 
> directly but at the right position). Please help me with what I am 
> missing please. Whenever I used the leadfield to calculate source, it 
> also contain NaN.
>
>
>
> Azeez Adebimpe
>
>
>
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> fieldtrip mailing list
> fieldtrip at donders.ru.nl
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-- 
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team

P.O. Box 9101
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