find_ch_adjacency error

[Hugues1273 (Hugues)]

Hello

I am trying to use find_ch_adjacency but it does not work, it returns the error:
Could not find a adjacency matrix for the data. Computing adjacency based on Delaunay triangulations.

and then

QhullError: QH6214 qhull input error: not enough points(1) to construct initial simplex (need 4)

While executing:  | qhull d Qbb Qt Qc Qz Q12
Options selected for Qhull 2019.1.r 2019/06/21:
  run-id 850009535  delaunay  Qbbound-last  Qtriangulate  Qcoplanar-keep
  Qz-infinity-point  Q12-allow-wide  _pre-merge  _zero-centrum  Qinterior-keep
  _maxoutside  0

My montage is easycap-M1

here is my code:

RawData.set_montage("easycap-M1", on_missing = "ignore")
fig1 = RawData.plot_sensors(show_names=True)

then I did some analyses and then:

Info = Condition1Epoch[0].info

# builtin_ch_adj = mne.channels.get_builtin_ch_adjacencies(descriptions=True)
# for adj_name, adj_description in builtin_ch_adj:
#     print(f"{adj_name}: {adj_description}")

Ch_Adjacency, Ch_Names = mne.channels.find_ch_adjacency(Info, "eeg")

where Condition1Epoch[0] is the first epoch of a specific condition (I am working with epochs).

Have some ideas? I tried to get the montage using .get_montage() and it returned:
<DigMontage | 0 extras (headshape), 0 HPIs, 3 fiducials, 1 channels>

And of course I do not have only one channel, every previous analyses worked perfectly and showed all the channels…

Have someone an idea?

Thank you so much!

Using Windows 11, python 3.12, I installed mne on this new computer like 3 weeks ago, so it is a quite recent version of mne.

[Hugues1273 (Hugues)]

Dear all,

for some reasons I don’t know, everything is now working perfectly fine, I did not change anything…

have a good day!