# Epochs on data with no events **URL:** \ **Category:** Mailing List Archive (read-only)\ **Tags:** list-archive\ **Created:** [October 18, 2016, 12:11pm UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099 "2016-10-18T12:11:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [October 18, 2016, 12:11pm UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099/1 "2016-10-18T12:11:56Z")
Hi, I'm trying to analyse data with no events (eyes closed, EEG) and I'm trying to segment the data series into 10sec segments (named epochs in my references). I tried the Epochs method but it requires events and I can't find any other methods doing this. Is there any way to do this in mne? And if not, is there a way to convert the data to the epoch-object from SciPy or will I have to do it all in SciPy? Thanks, Lasse ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [October 19, 2016, 11:20am UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099/2 "2016-10-19T11:20:10Z")
Hi Lasse, you might be looking for this function: [http://martinos.org/mne/stable/generated/mne.make\_fixed\_length\_events.html#mne.make\_fixed\_length\_events](http://martinos.org/mne/stable/generated/mne.make_fixed_length_events.html#mne.make_fixed_length_events) Best, Denis ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [October 19, 2016, 12:12pm UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099/3 "2016-10-19T12:12:01Z")
You could also use \_segment\_raw which works like this: from mne.epochs import \_segment\_raw epochs = \_segment\_raw(raw, 10.) ? 2016-10-18 14:11 GMT+02:00 Lasse Balmer Hansen \: ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [October 19, 2016, 1:05pm UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099/4 "2016-10-19T13:05:25Z")
However, keep in mind that private functions (those that start with `_`) are not recommended for public use, as they can change behavior or be removed at any time without the changes being documented or going through a deprecation cycle. So it is safer to use the public function `make_fixed_length_events` to make events, and pass those the events to the `Epochs` constructor. Eric ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [October 19, 2016, 1:15pm UTC](https://mne.discourse.group/t/epochs-on-data-with-no-events/1099/5 "2016-10-19T13:15:03Z")
Right, but if you are using make\_fixed\_length\_events + Epochs, remember to set baseline=None, otherwise every first sample of your epochs will be zero. 19 pa? 2016 3:06 PM "Eric Larson" \ napisa?(a):