[Mne_analysis] The issue of converting EDF to FIF format

Xiaoxiao Bai baixx013 at gmail.com
Wed Jul 2 20:15:30 EDT 2014
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Dear Denis,

Thank you for your help.

elc = mne.fiff.kit.read_elp() get electrode locations acquired from
Polhemus system.

raw = mne.io.egi.read_raw_egi() get fif data object from EGI raw data file.

We want to add electrode locations elc into raw rather than epochs.

Best

Xiaoxiao


On Wed, Jul 2, 2014 at 6:32 PM, Denis A. Engemann <denis.engemann at gmail.com>
wrote:

> Hi,
>
> we currently only support that at the epochs stage:
>
> http://martinos.org/mne/dev/generated/mne.epochs.add_channels_epochs.html
>
> you need compatible sampling rates
>
> HTH,
> Denis
>
> On Jul 3, 2014, at 12:17 AM, Xiaoxiao Bai <baixx013 at gmail.com> wrote:
>
> Dear Denis,
>
> Thank you for your help. I have another simple question about saving elp
> and EGI raw as a fif file.
>
> I use raw = mne.io.egi.read_raw_egi() to read EGI raw data and elc =
> mne.fiff.kit.read_elp() to read elp file.
>
> How can I combine raw and elc and save them into one fif file?
>
> Best
>
> Xiaoxiao
>
>
> On Wed, Jul 2, 2014 at 2:50 PM, Denis-Alexander Engemann <
> denis.engemann at gmail.com> wrote:
>
>> Xiaoxiao, great!
>>
>> Glad to hear it worked.
>>
>> Best,
>> Denis
>>
>>
>> On Wed, Jul 2, 2014 at 8:36 PM, Xiaoxiao Bai <baixx013 at gmail.com> wrote:
>>
>>> Dear Denis,
>>>
>>> I have installed MNE python. It can read EGI raw file.
>>>
>>> Best
>>>
>>> Xiaoxiao
>>>
>>>
>>> On Wed, Jul 2, 2014 at 12:49 PM, Denis-Alexander Engemann <
>>> denis.engemann at gmail.com> wrote:
>>>
>>>>
>>>> Hi Xiaoxiao,
>>>>
>>>> we meanwhile have direct reading + conversion support for EGI data
>>>> in MNE-Python (development version),
>>>>
>>>> Take a look at: mne.io.egi.read_raw_egi
>>>>
>>>> It supports the native egi raw format.
>>>>
>>>> Hope this helps,
>>>> Denis
>>>>
>>>>
>>>> On Wed, Jul 2, 2014 at 6:38 PM, Xiaoxiao Bai <baixx013 at gmail.com>
>>>> wrote:
>>>>
>>>>> Dear Dgw,
>>>>>
>>>>> Thank you for you help. This file only includes signals of 128
>>>>> channels with same sample rate.
>>>>>
>>>>> After that, I input EGI Net Station data into BrainVision and then
>>>>> save as EDF file. This BrainVision EDF file can be converted to FIF file.
>>>>>
>>>>> I used matlab toolbox to read this FIF file and its header information
>>>>> and data are correct.
>>>>>
>>>>> But I can not display it in the mne_browse_raw (see attached
>>>>> screenshot).
>>>>>
>>>>> Best
>>>>>
>>>>> Xiaoxiao
>>>>>
>>>>>
>>>>> On Wed, Jul 2, 2014 at 12:13 PM, dgw <dgwakeman at gmail.com> wrote:
>>>>>
>>>>>> Hi Xiaoxiao,
>>>>>>
>>>>>> What types of data are in there? The error message suggests that
>>>>>> there is data with different sampling rates. Do you have channels with
>>>>>> different sampling rates? If yes, can you re-export the data removing the
>>>>>> data with different sampling rates?
>>>>>>
>>>>>> HTH,
>>>>>> D
>>>>>>
>>>>>>
>>>>>> On Wed, Jul 2, 2014 at 11:20 AM, Xiaoxiao Bai <baixx013 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi all MEN users,
>>>>>>>
>>>>>>> I used Net station to save recorded EEG data to EDF format. When I
>>>>>>> used mne_edf2fiff to convert our EDF file to FIF file, I got this error
>>>>>>> message,
>>>>>>>
>>>>>>> $ mne_edf2fiff --edf Recording_9_fil.edf --fif Recording_9_fil.fif
>>>>>>>
>>>>>>> mne_edf2fiff version 1.6 compiled at Dec 21 2009 19:46:35
>>>>>>>
>>>>>>> EDF/EDF+/BDF file (input)  : Recording_9_fil.edf
>>>>>>> No electrode position data specified.
>>>>>>> fif file (output)          : Recording_9_fil.fif
>>>>>>>
>>>>>>> Parsing EDF/EDF+/BDF header...[failed]
>>>>>>> Unequal sampling rates across data channels are not supported.
>>>>>>>
>>>>>>> Best
>>>>>>>
>>>>>>> Xiaoxiao
>>>>>>>
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