[FieldTrip] plotting freesurfer mesh on the mri_aligned.

[parham hashemzadeh]

Hi Jan
  Thank you, my functional data are the function values of some function 
(irrotational component of the current). From my limited experience of 
Fieldtrip, your explanation feels (to myself) a bit cryptic at the 
moment.

      You see if my inversion strategy was one of the classical ones such 
as the ones provided by "ft_sourceanalysis" lcmv,sam,..., eloreta
           then the available fieldtrip tutorials are great in showing 
how to plot functional values on the top of anatomical values.
  But, since, I work on inversion methods, then I need a hacking strategy 
to be able to plot functional values of "some function"(estimated) on 
top of anatomical data MRI.

  I would appreciate if you would kindly let me know, if there is hack to 
it such that
  ft_sourceplot can accept the input.
best regards parham





On 2016-10-04 16:29, Schoffelen, J.M. (Jan Mathijs) wrote:
> Hi Parham,
> 
> It is possible, but certainly not pain free, nor straightforward.
> I think this is not really a fieldtrip question, but more a general
> matlab related issue.
> 
> It should be possible to plot a slice through an MRI volume as a
> MATLAB patch, where the coordinates of the voxels are expressed in
> some coordinate system. Then, it is possible to generate and
> intersection of the freesurfer mesh through the plane of
> visualization.
> 
> Best,
> Jan-Mathijs
> 
> 
> 
>> On 04 Oct 2016, at 16:41, parham hashemzadeh <ph442 at cam.ac.uk> wrote:
>> 
>> Dear Fieldtrippers
>> Is there a straightforward pain free method ( I appreciate if you can 
>> give me the command)
>> to plot arbitrary points such as the vertices of the freesurfer output 
>> (mesh) onto the MRI image?
>> The reason that I ask is that I would like to plot my solution on the 
>> MRI image.
>> Unfortunately I do not use dipoles. In EEG, I model the irrotational 
>> component of the current as a scalar function and therefore I am doing 
>> function estimation.
>>  IF you use dipoles, it is straightforward because you follow one of 
>> the tutorials.
>>  But if you do not use dipoles and model the current as the gradient 
>> of the irrotational component of the current in EEG then one can get 
>> lost.
>> Any help would be appreciated.
>> Many thanks
>> 
>> --
>> best regards
>> Parham Hashemzadeh
>> Research Associate
>> Department of Applied Mathematics and Theoretical Physics
>> University of Cambridge, UK.
>> email: hashemzadeh at damtp.cam.ac.uk
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>> fieldtrip mailing list
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> 
> 
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-- 
best regards
Parham Hashemzadeh
Research Associate
Department of Applied Mathematics and Theoretical Physics
University of Cambridge, UK.
email: hashemzadeh at damtp.cam.ac.uk