[Mne_analysis] Saving a file in EDF format

[Alejandro Weinstein]

        External Email - Use Caution        

Thank you Phillip for the answer.

I tried saving to a BV file using your function, but my laptop
completely freeze. I had to hard reset the laptop to bring it back.

The raw object is big (around 900 MB), and after calling
philistine.mne.write_raw_brainvision, the laptop run out of RAM and
starts using the swap. I would expect that to be slow, but not to
freeze the machine. I don't know if there is something odd with my
machine or if it's the function that misbehave. I'll try tomorrow with
another machine and see how it goes.

Alejandro

On 7 May 2018 at 17:11, Alday, Phillip <Phillip.Alday at mpi.nl> wrote:
> Since you want to open it up in Brainvision, why not just export to
> BrainVision format?
>
> https://philistine.readthedocs.io/en/master/api/philistine.mne.write_raw_brainvision.html#philistine.mne.write_raw_brainvision
>
> That function isn't yet in the PyPI release, so you'll have to install
> via Git:
>
> python -m pip install --user --upgrade
> git+https://gitlab.com/palday/philistine.git
>
> In my preliminary tests, the triggers and raw data match when reading in
> a BV file, writing it out, and then reading it back in, but I haven't
> yet tested everything extensively. If you find a bug, please report it!
>
> Phillip
>
>
> On 07/05/18 22:04, Alejandro Weinstein wrote:
>>         External Email - Use Caution
>>
>> Sorry for the copy paste error. Instead of
>> "https://ohbm-openscience.org/" it should say "mne.io.read_raw_edf"
>>
>> On 7 May 2018 at 17:02, Alejandro Weinstein
>> <alejandro.weinstein at gmail.com> wrote:
>>> Hi:
>>>
>>> Is it posible to save a raw object in EDF format?
>>>
>>> The details of what I'm trying to do are as follow. I have a  Biosemi
>>> BDF file that I read with `https://ohbm-openscience.org/`. I then
>>> modify the trigger signal of this raw object:
>>>
>>> raw[mne.pick_types(raw.info, include=['STI 014']), :] = trigger
>>>
>>> (I think that how and why I need to change the trigger is not
>>> relevant, but I can give details if that is useful)
>>>
>>> Now I want to save the raw object as a BDF file, but I haven't find
>>> how. I can do raw.save, but that save the raw object as a FIF file.
>>>
>>> The reason I need a BDF file back is that the file will be processed
>>> by another person using Brainvision, and it seems this software is not
>>> able to open FIF files.
>>>
>>> I have also search for tools outside MNE to convert from FIF to BDF
>>> with out succes.
>>>
>>> Alejandro
>> _______________________________________________
>> Mne_analysis mailing list
>> Mne_analysis at nmr.mgh.harvard.edu
>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
>>
>>
>> The information in this e-mail is intended only for the person to whom it is
>> addressed. If you believe this e-mail was sent to you in error and the e-mail
>> contains patient information, please contact the Partners Compliance HelpLine at
>> http://www.partners.org/complianceline . If the e-mail was sent to you in error
>> but does not contain patient information, please contact the sender and properly
>> dispose of the e-mail.
>>
>