Overlapping multiple PSDs in on figure

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1
  • MNE version: 0.24.0
  • operating system: macOS 14

Hi! I have plotted multiple individual PSDs from EEG data using the following code:

raw_PD_6 = mne.io.read_raw_fif ('/Users/cinthia/UO/Coding/PD_offmeds/PD_06_off_rest_S1_V1_ica_raw.fif', preload=True) 
PD_6_psd_alpha1=raw_PD_6.compute_psd(method='welch', fmin=10, fmax=13, tmin=1, tmax=100, picks=['F4' ])

PD_6_psd_alpha1.plot()

Still, I want to know if I can do this with multiple channels at the time because whenever I try to change picks=['F4' ] to picks=['all ], I get an error.

Besides, I want to plot all my PSDs into one figure without averaging them. I want to see how they overlap one on top of each other all in one figure so people can better visualize how they differ.

Are both of these things possible?

2

If you don’t specify picks at all (that is, use the default of picks=None), PSDs for all (good) channels will be computed. You can then plot the computed PSDs, and by default you should see individual PSDs, i.e. raw.compute_psd().plot() should do what you want.

3

Hi, thank you for the help. picks=None worked well but once I try to plot it I get this error: AttributeError: 'NoneType' object has no attribute '_get_renderer'

Any idea on how to fix it?

This is the full code in case it is useful:

raw = mne.io.read_raw_fif ('/Users/cinthia/UO/Coding/PD_offmeds/PD_05_off_rest_S1_V1_ica_raw.fif', preload=True) 
raw_psd=raw.compute_psd(method='welch', fmin=3, fmax=70, tmin=1, tmax=100, picks=None)

raw_psd.plot()
4

Just to make sure, does this statement also result in the same error?

raw.compute_psd().plot()
5

I was able to fix it. I had the same problem as here: Jupyter yields: 'NoneType' object has no attribute '_get_renderer' · Issue #11799 · mne-tools/mne-python · GitHub. I add it in case someone else is experiencing the same thing. Thank you Clemens for the code. I was later then able to use it without error.

1 Like
6

I missed that you were using MNE 0.24, which is really really old. You should always use the latest version (1.7 currently) if possible!

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