[Mne_analysis] Dipole position in MRI-coordinate-frame

[Alexandre Gramfort]

        External Email - Use Caution        

hi,

you can look at the code to see how transforms are applied:

https://github.com/mne-tools/mne-python/blob/master/mne/source_space.py#L1135-L1179

HTH
Alex


On Fri, Sep 27, 2019 at 3:31 PM Mar Tin <beetlejuice920 at gmail.com> wrote:

>         External Email - Use Caution
>
> Hello,
>
> thanks for your immediate response.
> I saw, that the function head_to_mri transforms to MRI RAS and not Surface
> RAS. But I'd like to plot the dipole-position together with a
> pysurfer-surface plot and would also like to compare dipole with label
> positions.
> Is there a way, to transform to Surface RAS too?
>
> Kind regards
> Martin
>
> Alexandre Gramfort <alexandre.gramfort at inria.fr> schrieb am Fr., 27. Sep.
> 2019, 13:16:
>
>>         External Email - Use Caution
>>
>> Hi,
>>
>> have a look at:
>>
>> https://mne.tools/dev/auto_tutorials/source-modeling/plot_dipole_fit.html
>> <https://mne.tools/dev/auto_tutorials/source-modeling/plot_dipole_fit.html#sphx-glr-auto-tutorials-source-modeling-plot-dipole-fit-py>
>>
>> especially the mne.head_to_mri
>> <https://mne.tools/dev/generated/mne.head_to_mri.html#mne.head_to_mri>
>>  function.
>>
>> HTH
>> Alex
>>
>>
>> On Fri, Sep 27, 2019 at 1:10 PM Mar Tin <beetlejuice920 at gmail.com> wrote:
>>
>>>         External Email - Use Caution
>>>
>>> Dear MNE-Community,
>>>
>>> I am trying to transform the position of a dipole (by ecd-fit or
>>> mixed-norm-estimate) to the subjects mri-coordinate system, to compare it
>>> to source-space-activations and label and visualize it in the 3D-Brain. As
>>> I understand, the dipole lies in the head-coordinate frame and the position
>>> has to be transformed.
>>> I tried the "_get_dipole_loc"-function in _3d.py but it didn't seem to
>>> work out.
>>> How would I get the transformation right? Or is there even a function
>>> for this I overlooked?
>>>
>>> Thanks a lot in advance
>>> Martin
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