[Mne_analysis] Topomap with Brainvision EEG data

[Denis-Alexander Engemann]

Hi Lakshmi,

Generally it would be better to use actual data, not randomly generated
data to compare both routines.
Obviously the locations are different.
Do you happen to use any importing routine to get your data into MNE?
Which kind of data format do you use, natively?
The viz function you're using is quite low level and normally expects
preprocessed channel locations.
We'll have a mini MNE sprint tomorrow in Paris on EEG, montages and io
functionality.
We'll take a look at your case and get back to you.

Best,
Denis


2014-10-30 21:02 GMT+01:00 Lakshmi Krishnan <lakshmik at umd.edu>:

>
>    Hi Denis,
>  Here is the link to sample sample scripts and figures for generating the
> topomap with a eeglab utility function and mne-python.
>
>  https://copy.com/djUllqUXi3lfSaiV
>
> The matlab topoplot matches the figures provided by Brain vision in their
> documentation.I would be happy to use any other channel location file
> that's known to work with Brain Vision EEG data.
> Thanks!
> -Lakshmi
>  ------------------------------
> *From:* mne_analysis-bounces at nmr.mgh.harvard.edu [
> mne_analysis-bounces at nmr.mgh.harvard.edu] on behalf of Denis-Alexander
> Engemann [denis.engemann at gmail.com]
> *Sent:* Thursday, October 30, 2014 9:27 AM
> *To:* Discussion and support forum for the users of MNE Software
> *Subject:* Re: [Mne_analysis] Topomap with Brainvision EEG data
>
>   Hi Lakshmi,
>
>  could you possibly share data snippets, an example script and maybe the
> different figures that you see?
> Otherwise it will be difficult to understand what's wrong.
>
>  --Denis
>
> 2014-10-30 14:23 GMT+01:00 Lakshmi Krishnan <lakshmik at umd.edu>:
>
>>  Hello List,
>> I am trying to port all my Matlab analysis scripts into python and have
>> trouble making a topomap with EEG data collected from a Brainvision system.
>> I am trying to use mne.viz.plot_topomap() with the channel location
>> information that I know works with eeglab topoplot.
>> The resulting plot doesn't match the topomap I make with Matlab.
>> Any help to resolve this is much appreciated.
>> I am using mne version 0.9 from github.
>> Thanks!
>>  -Lakshmi
>>
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