[Mne_analysis] Saving a file in EDF format

[Alejandro Weinstein]

        External Email - Use Caution        

I tried again and waited for a long time. The laptop come back to life
and now I have three files that looks like what BV wants. I'll let you
know if BV is able to open the file.

Thanks again.
Alejandro

On 7 May 2018 at 20:48, Alejandro Weinstein
<alejandro.weinstein at gmail.com> wrote:
> It seems it's a problem with the configuration of my machine. The
> behavior I observe is described here:
>
> https://superuser.com/questions/1115983/prevent-system-freeze-unresponsiveness-due-to-swapping-run-away-memory-usage
> https://unix.stackexchange.com/questions/271765/machine-freezes-once-it-hits-swap-space-under-heavy-load
>
> I'll see if I can fix it.
>
> Alejandro
>
> On 7 May 2018 at 20:40, Alejandro Weinstein
> <alejandro.weinstein at gmail.com> wrote:
>> 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
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