Passing a custom montage to the PrepPipeline(raw, montage=?)? about pyprep HOT 5 CLOSED

Yes, you guessed right- I saved + reloaded - the data.
Below is the version information.

Using the preload=True solved it. Thank you!

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As a follow up, i tried with montage=None expecting the PrepPipeline will extract information from the raw object.

PrepPipeline(raw, prep_params, montage=None)

But then I get the following (different) error.

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regarding your first question, see this example: https://pyprep.readthedocs.io/en/latest/auto_examples/run_full_prep.html?highlight=montage#load-data-and-prepare-it

regarding your second problem, that is a bit unexpected. Could you try saving your raw using raw.save, and then loading it again using mne.io.read_raw_fif? If the error disappears then, it might be a problem in MNE-Python with the curry data format

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Thank you for the reply. I tried raw.save() saving the file as .fif but the error persists.

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You have to save as fif AND THEN reload the data from that saved fif datafile. Only saving is not enough :-) ... but the error log looks like you did exactly that. Weird how you still get an issue.

Can you do:

print(raw.get_data().shape)

and report what you get here?

Also can you run

import mne
mne.sys_info() 

and report the outputs here?

Which version of pyprep are you using, and how did you install it?

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