[Mne_analysis] combining/splitting fif files

[Linda Moya]

Hi Elizer,

I combine *.fif files by reading them into Matlab and then combining them there. Then I use the matlab routines provided by  mne suite to write them back out to *.fif files so that I can use mne_browse_raw and mne_process_raw.

I would be happy to show you what I have done if you like since we are both here at CMU...

Best Regards,

Linda Moya
CMU Psychology

| Hello folks -
| 
| I have an experimental paradigm which lasts approximately 40 minutes.
| I usually just let the MEG run straight, end up with a single fif
| file, and then do all my analysis on this. We recently switched from
| 16 bit to a 32 bit architecture (side point: does this mean more
| accurate recordings? what DOES that mean for the end user?), and I
| learned something new: the machine will only save files less than 2 GB
| in size. As such, I now have two files, myFile.fif (2 GB) and
| myFile_1.fif (~1.6 GB). I have no idea where it split it, behavioral-
| wise.
| 
| What's the best way to proceed from here? I can't analyze them as they
| sit, since I can't specify multiple files in mne_process_raw if the
| files contain different numbers of trials. Is there a program that can
| concatenate them? Should I just try to use mne_read_raw in matlab and
| hope matlab doesn't choke on almost 4 GB of data? Any ideas? Thanks -
| 
| Sincerely,
| Eliezer Kanal
| Graduate Student, Bioengineering
| Laboratory for Computational Neuroscience
| University of Pittsburgh
| 3520 Forbes Avenue, 2nd floor, R218
| Pittsburgh, PA 15213
| 412-802-6482
| Fax: 412-802-6785
| 
| 
| 
| 
| 
| 
| 
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| 


-- 
Linda Moya
Psychology, Carnegie Mellon University
Center for the Neural Bases of Cognition, Mellon Institute
http://www.andrew.cmu.edu/user/lhmoya/