megplanar

Michael Wibral michael.wibral at WEB.DE
Fri Mar 26 18:29:10 CET 2010


Hi Shennan,

could you post the code to read in the data, and the specific error message you ge - that would be very helpful.
Here are some more questions:
Did you use the tools provided by ctf to read in the data? 
Did you read in only MEG channels (and not the refence ones etc.)?
Did you try to plot or statistically analyze your megplanar data *before* using combineplanar (only after using combineplanar plotting and statitistcs are possible to my knowledge)?

Michael






-----Urspr√ľngliche Nachricht-----
Von: Shennan Weiss 
Gesendet: Mar 25, 2010 11:48:43 PM
An: FIELDTRIP at NIC.SURFNET.NL
Betreff: [FIELDTRIP] megplanar

>Hi again,
>
>I wanted to specify the error I am encountering with megplanar analyzing
>CTF275 data. Note in preprocessing I had to set the read parameters to
>ctf_old. The specific problem occurs in channelposition.m
>
>at the following lines
>
>used = any(abs(sens.tra)<0.5, 1);  % allow a little bit of rounding-off error
>sens.pnt = sens.pnt(used,:);
>
>the problem is that sens.tra that is equivalent to data.grad.tra and is a
>273 x 574 array. While sens.pnt is a array of 543x3.
>
>Any help would be greatly appreciated.
>
>Thanks, Shennan
>
>----------------------------------
>The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.
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