# quick question

**URL:** <https://mne.discourse.group/t/quick-question/818>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [September 11, 2014, 11:13am UTC](https://mne.discourse.group/t/quick-question/818 "2014-09-11T11:13:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [September 11, 2014, 11:13am UTC](https://mne.discourse.group/t/quick-question/818/1 "2014-09-11T11:13:21Z")

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Hi Jonathan,

cc mne mailing list

currently you have two options.

1/ if epochs1 and epochs2 come from 2 raw files you can create a raw  
from these two with something like raw = mne.io.Raw(['file1\_raw.fif',  
'file2\_raw.fif') or use concatenate\_raws function in  
mne.io.concatenate\_raws. Then you'll extract the epochs from the new  
raw which contains all the raw data from all files.

2/ use EpochsArray and do the concatenation of data manually.

I assume you run v0.8 or later.

Hope this helps  
Alex