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MNE: Magnetoencephalography (MEG) and Electroencephalography (EEG) in Python
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Mismatch of coord systems between electrodes and channels/events #11239

Closed laemtl closed 2 years ago

laemtl commented 2 years ago

Description of the problem

Channel//Epoch data are exported in the ALS/CTF coord system to follow the EEGLAB specs. On the other hand, electrode data are exported in the head/captrak coord space.

Is there any reason to not export the electrode data in the same space?

Steps to reproduce

Exporting an EEGLAB dataset using
write_raw_bids(..., allow_preload=False, overwrite=False, verbose=False)

Link to data

No response

Expected results

Electrode data in the CTF space

Actual results

Electrode data in the Captrak space

Additional information

Platform: Windows-10-10.0.19041-SP0 Python: 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC v.1924 64 bit (AMD64)] Executable: C:\Users\Lae\Documents\hbcd-eeg2bids\Scripts\python.exe CPU: Intel64 Family 6 Model 142 Stepping 9, GenuineIntel: 4 cores Memory: Unavailable (requires "psutil" package) mne: 1.2.0 numpy: 1.20.3 {OpenBLAS 0.3.13.dev with 4 threads} scipy: 1.9.2 matplotlib: 3.6.1 {backend=TkAgg}

sklearn: 1.1.2 numba: 0.56.2 nibabel: Not found nilearn: Not found dipy: Not found openmeeg: Not found cupy: Not found pandas: 1.5.0 pyvista: Not found pyvistaqt: Not found ipyvtklink: Not found vtk: Not found qtpy: Not found ipympl: Not found pyqtgraph: Not found pooch: v1.6.0

mne_bids: 0.10 mne_nirs: Not found mne_features: 0.2.1 mne_qt_browser: Not found mne_connectivity: Not found mne_icalabel: Not found

agramfort commented 2 years ago

this questions should be asked here https://github.com/mne-tools/mne-bids/issues it's an mne-bids question. Can you open the issue there and I will answer there. ok?

thanks a lot

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