[Mne_analysis] Save data to certain format

[JR KING]

Have you tried having raw._data only ?

On Friday, 1 April 2016, chanderler mei <semsociaty at gmail.com> wrote:

> Hi Teon,
>
> I try to use savemat to save the raw data, but savemat cannot handle
> 'nonetype' class. I delete all the empty fields from the raw using pop()
> because I think raw is a dictionary. However, there are still 'nonetype'
> class in raw. Do you know if there is a way to handle it?
>
> Thank you very much for your time,
>
> Ning
>
> On Thu, Mar 31, 2016 at 11:10 PM, Teon Brooks <teon.brooks at gmail.com
> <javascript:_e(%7B%7D,'cvml','teon.brooks at gmail.com');>> wrote:
>
>> Hi Ning,
>>
>> The only output file from MNE is the *.fif. We read the multiple formats
>> but we have two options for getting the data out: 1. raw.save with the
>> *.fif, or 2. externally from the numpy.ndarray as an npy with `np.save` or
>> as a mat file with `scipy.io.savemat`. The latter seems like the most
>> suitable if you want to interact with EEGLAB in Matlab.
>>
>> HTH,
>>
>>
>>
>> teon
>> --
>>
>>
>> Teon Brooks, PhD Candidate
>> NSF Fellow, Chateaubriand Fellow
>> Department of Psychology, New York University
>> Researcher | OpenBCI
>> Co-Chair | BraiNY, Greater NYC Chapter of Society for Neuroscience
>>
>> On Thu, Mar 31, 2016 at 6:13 PM, chanderler mei <semsociaty at gmail.com
>> <javascript:_e(%7B%7D,'cvml','semsociaty at gmail.com');>> wrote:
>>
>>> Dear all,
>>>
>>> I loaded my eeg data from *.edf format files. After adding a duplicate
>>> channel, I want to save the raw data back a *.edf format file:
>>>
>>> raw.save('sample_edf.edf',overwrite=True)
>>>
>>> The file seems to be much bigger than the original one, from 460,000 KB
>>> to 860,000 KB.
>>>
>>> Also, when I try to import it to Matlab EEGLAB, it says:
>>> EEGLAB error in function getfiletype() at line 1111:
>>>
>>> Operands to be || and && operators must be convertible to logical scalar
>>> values.
>>>
>>> And then I try to open the *.edf file in EDFbrowser, and return error:
>>> 1th character of version field is not a valid 7-bit ASCII character.
>>> File is not a valid EDF or BDF file.
>>>
>>> I try to just read the *.edf file to python and save it to another *.edf
>>> file, same errors occur.
>>>
>>> QUESTION:
>>> Is there a format of file I could export my raw data so that it is
>>> readable in Matlab EEGLAB? Or is there a way to save the raw data to a
>>> readable *.edf file?
>>>
>>> Thank you very much for your time,
>>>
>>> Sincerely,
>>>
>>> Ning
>>>
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