[Mne_analysis] A bug in 'pick_types' function for CTF dataset

[Alday, Phillip]

        External Email - Use Caution        

If you look at raw.info, you'll see that MNE thinks that the CTF sensors are all mag and not grad. This is something I noticed recently and haven't had time to examine systematically enough to put in a pull request for yet.

Phillip

Sent from my mobile, please excuse the brevity.
________________________________
Von: boo <1401110602 at pku.edu.cn>
Gesendet: Freitag, 6. September 2019 20:20
An: mne_analysis at nmr.mgh.harvard.edu
Cc: fanwang at ibp.ac.cn
Betreff: [Mne_analysis] A bug in 'pick_types' function for CTF dataset


        External Email - Use Caution

Dears:

I am wondering whether 'mne.pick_types' has a bug for CTF dataset. When I use ‘gradiometer’ as parameter there is no gradiometer channels were selected (mne.pick_types(raw_data.info<http://raw_data.info>, meg='grad’)), while the 275 gradiometer channels could be selected by using the ‘magnetometer’ as parameter (mne.pick_types(raw_data.info<http://raw_data.info>, meg=‘mag’)) as shown by the screenshot. I report this information please let me know if I misunderstood anything.


My system and MNE environment is shown below:

Platform:      Darwin-18.7.0-x86_64-i386-64bit
Python:        3.6.8 |Anaconda, Inc.| (default, Dec 29 2018, 19:04:46)  [GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)]
Executable:    /anaconda3/envs/mne/bin/python
CPU:           i386: 12 cores
Memory:        32.0 GB
mne:           0.19.dev0
numpy:         1.16.4 {blas=mkl_rt, lapack=mkl_rt}
scipy:         1.2.1
matplotlib:    3.1.0 {backend=MacOSX}
sklearn:       0.21.2
nibabel:       2.4.0
mayavi:        4.6.2 {qt_api=pyqt5, PyQt5=5.12.1}
cupy:          Not found
pandas:        0.24.2
dipy:          0.16.0


Best regards
bo
bo.zhang at pku.edu.cn<mailto:bo.zhang at pku.edu.cn>



[cid:5c200c35-eda5-44ed-8249-65f2263f8856]
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