[Mne_analysis] error filtering biosemi imported file

[Eric Larson]

Hey Mauricio,

This sounds like it might be an issue with our preloading routines. If you
can upload a sample EDF file and start an issue on Github with a minimum
example (it looks like those lines would be it) of the problem, we can work
out a solution:

https://github.com/mne-tools/mne-python/issues?state=open

Thanks,
Eric



On Tue, Jan 14, 2014 at 2:56 PM, Mauricio Aspé Sánchez <
mauricio.aspe.s at gmail.com> wrote:

> Thanks Eric,
> do I have to type something like this?
>
> raw = read_raw_edf('bdf_file.bdf', hpts = 'hpts_file.hpts')
>  raw.filter(30, 1)
>
> in that case, I have to use
> raw = read_raw_edf('bdf_file.bdf', hpts = 'hpts_file.hpts', preload =
> 'True')
>
> Isn't it? But it's strange because when I read the bdf with preload =
> 'True' I don't know if the program crushes or it will take a lot of time
> (I'm loading a 128 channels 50 min EEG on a PC with 8 GB RAM and two 3.4
> GHz processors... it takes to EEGLab just 3 min). I waited for 1 hr and the
> bdf didn't load.
>
> All the best,
> Mauricio.
>
>
> 2014/1/14 Eric Larson <larson.eric.d at gmail.com>
>
>> Hey Mauricio,
>>
>> You should be able to do "raw.filter(...) " directly on the Raw instance
>> (as a method of Raw). Does that make sense?
>>
>>
>> http://martinos.org/mne/stable/generated/mne.fiff.Raw.html#mne.fiff.Raw.filter
>>
>> Eric
>>
>>
>>
>> On Tue, Jan 14, 2014 at 2:12 PM, Mauricio Aspé Sánchez <
>> mauricio.aspe.s at gmail.com> wrote:
>>
>>> Hi everybody,
>>> I'm working with some biosemi EEG files
>>>
>>> the following code:
>>>
>>> raw = read_raw_edf('bdf_file.bdf', hpts = 'hpts_file.hpts')
>>> fraw = filter.band_pass_filter(raw, 1024, 30, 1)
>>>
>>> gives me the error:
>>>
>>> Traceback (most recent call last):
>>>   File
>>> "C:\Users\Mauricio\Documents\Dropbox\PhD\scripts\mne-python\preprocessing.py",
>>> line 9, in <module>
>>>     fraw = filter.band_pass_filter(raw, 1024, 30, 1)
>>>   File "<string>", line 2, in band_pass_filter
>>>   File
>>> "C:\Python33\lib\site-packages\mne-0.8.git-py3.3.egg\mne\utils.py", line
>>> 387, in verbose
>>>     ret = function(*args, **kwargs)
>>>   File
>>> "C:\Python33\lib\site-packages\mne-0.8.git-py3.3.egg\mne\filter.py", line
>>> 624, in band_pass_filter
>>>     xf = _filter(x, Fs, freq, gain, filter_length, picks, n_jobs, copy)
>>>   File
>>> "C:\Python33\lib\site-packages\mne-0.8.git-py3.3.egg\mne\filter.py", line
>>> 276, in _filter
>>>     x, orig_shape, picks = _prep_for_filtering(x, copy, picks)
>>>   File
>>> "C:\Python33\lib\site-packages\mne-0.8.git-py3.3.egg\mne\filter.py", line
>>> 226, in _prep_for_filtering
>>>     orig_shape = x.shape
>>> AttributeError: 'RawEDF' object has no attribute 'shape'
>>>
>>> Could somebody tell me what I'm doing wrong?
>>> What is the right pipeline importing and filtering .bdf files?
>>>
>>> All the best,
>>> Mauricio.
>>>
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