[Mne_analysis] Identifying adjacent sources

[Alexandre Gramfort]

i suppose you mean use_tris with _

it's normal to have twice more triangles than vertices.

see for example here:

https://github.com/mne-tools/mne-python/blob/master/mne/viz/_3d.py#L1444

how we get the triangles in low resolution with vertices index that go
from 0 to 581 in your case.

HTH
Alex


On Sat, Mar 3, 2018 at 10:58 PM, Gladia Hotan <gladiach at gmail.com> wrote:

> Hi Alex,
>
> I'm still not sure how to get the adjacency matrix, based on the example.
> It seems like lh_faces and rh_faces contain the faces from the original
> cortical parcellation, before some sources are removed? I have an ico 3
> source space. My leadfield matrix has 1162 sources in total. Thus
> fwd['src'][0]['vertno'].shape = 581 and fwd['src'][1]['vertno'].shape =
> 581. However, fwd['src'][0]['usetris'].shape = 1280 and
> fwd['src'][1]['usetris'].shape = 1280, so I'm not sure which faces
> correspond to which vertices?
>
> Thanks and Best,
> Gladia
>
> On Tue, Feb 6, 2018 at 5:26 AM, Alexandre Gramfort <
> alexandre.gramfort at inria.fr> wrote:
>
>> This is the old script I was pointing to:
>>
>> https://github.com/mne-tools/mne-python/blob/maint/0.4/examp
>> les/plot_read_forward.py
>>
>> HTH
>> Alex
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