[Mne_analysis] Save data to certain format

[chanderler mei]

Using only raw._data works.

Ning

On Fri, Apr 1, 2016 at 2:29 PM, JR KING <jeanremi.king at gmail.com> wrote:

> 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>
>> 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>
>>> 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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>>>
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