[Mne_analysis] Error nproj = np.sum((S / S[0]) > 1e-2) raised when applying projectors

[Alexandre Gramfort]

        External Email - Use Caution        

Dear Mathieu

I would do a

conda list

on both systems to see how they differ wrt numpy and scipy versions

Alex

On Tue, Dec 8, 2020 at 10:16 AM Scheltienne Mathieu
<mathieu.scheltienne at epfl.ch> wrote:
>
>         External Email - Use Caution
>
> Dear all,
>
>
>
> I am using MNE for EEG analysis on my MacBook Pro on both mac OS and Windows (double boot).
>
> Today, I could not apply projectors on Windows but I could on mac OS. The error raised on Windows is:
>
>
>
> C:\Program Files\Python\Python38\lib\site-packages\mne\io\proj.py:641: RuntimeWarning: invalid value encountered in greater
>
>     nproj = np.sum((S / S[0]) > 1e-2)
>
>
>
> The error was raised when doing:
>
>
>
> raw = mne.io.read_raw_fif(fname, preload=True)
>
> raw.set_eeg_reference(ref_channels='average', projection=True) # CAR
>
> eog_projs, _ = mne.preprocessing.compute_proj_eog(raw, n_grad=0, n_mag=0, n_eeg=1, reject=None,
>
>                                                                                                   no_proj=True, n_jobs=1)
>
> raw.add_proj(eog_projs)
>
> raw.plot(scalings=DEFAULT_SCALINGS)
>
>
>
> Note that using only one of the 2 projectors raises the same error; and using raw.apply_proj() does it as well.
>
> Same file with same script on mac OS is working fine. Any idea for a solution?
>
>
>
> Have a nice day,
>
> Mathieu Scheltienne
>
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