[Mne_analysis] epochs.save()

[Rasha Hyder]

Hi Alex,
this is what I'm using for epoching:

events = mne.find_events(raw, stim_channel='STI101',
shortest_event=2,min_duration=0.002, verbose=True)


picks = mne.pick_types(raw.info,meg=True, eeg=True, eog=True, stim=False,
exclude='bads')

epochs = mne.Epochs(raw,events,event_id,tmin,tmax,picks=picks,
 baseline=baseline,reject=reject,preload=True,verbose=True)
# epochs.save(epo_fname)
epochs.save(eop_fname, split_size='2GB')

However, I'm not sure if you need more specific information but I can send
them to you.

I want to mention that I've noticed that epochs are splitted into two files
whenever the total size is larger that 1GB and I'm not sure why this is the
case!

Many thanks for your help
Rasha

On 10 April 2017 at 16:09, Alexandre Gramfort <
alexandre.gramfort at telecom-paristech.fr> wrote:

> hi Rasha,
>
> can you provide a code snippet to replicate?
>
> thanks
> Alex
>
> On Mon, Apr 10, 2017 at 3:59 PM, Rasha Hyder <rasha.hyder12 at gmail.com>
> wrote:
> > Hi Jaakko,
> > thanks for your reply. I have already tried that option and ran epoching
> > after setting split_size to '2GB':
> > epochs.save(epo_fname, split_size= '2GB')
> >
> > but still having the same problem, two saved files!
> > am I doing something wrong here? isn't the default splitting size value
> > '2GB' or should we set it explicitly when saving?
> >
> > Rasha
> >
> > On 10 April 2017 at 14:44, Jaakko Leppakangas <jaeilepp at gmail.com>
> wrote:
> >>
> >> Hi Rasha,
> >>
> >> see split_size option of epochs.save.
> >>
> >> -Jaakko
> >>
> >> On Mon, Apr 10, 2017 at 2:29 PM, Rasha Hyder <rasha.hyder12 at gmail.com>
> >> wrote:
> >>>
> >>> Hi all,
> >>> I'm trying to save epochs data using these two commands:
> >>>
> >>> 1- epochs = mne.Epochs(raw,events,event_id,tmin,tmax,picks=picks,
> >>>
> >>> baseline=baseline,reject=reject,preload=True,verbose=True)
> >>> 2- epochs.save(epo_fname)
> >>>
> >>> the epochs are saved into two files each with size around 600 MB
> although
> >>> the total size of the input raw fif file is only 1.25 GB! as far as I
> know
> >>> this should not happen unless the fif file is larger than 2 GB!?
> >>>
> >>> I would appreciate it if anyone could explain why this would happen and
> >>> how to save the epochs in one fif file.
> >>>
> >>> with best regards
> >>> Rasha
> >>>
> >>>
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