[Eeglablist] precompute channel measures

[Arnaud Delorme]

Dear Elia,

this is a good point. Actually, EEGLAB merges datasets then interpolate the missing channels before computing specific measures.
It would involve a lot of reprogramming to fix this so I do not think we are going to do it.
One way around this is, for each dataset, to interpolate the missing channels before creating the STUDY.

Best,

Arno

On 5 Jan 2013, at 09:30, Elia Valentini wrote:

> Dear List,
> 
> I'm in the process of precomputing channel measures (ERPs) in a 2x2 study design (say Y1, Y2, X1, X2) whereby I asked eeglab to perform statistics on the concatenated levels of each independent variable.
> 
> I got this  error (eeg_getdatact error):
> "Datasets to be concatenated do not have the same number of channels".
> 
> This happens regardless of the type of combinations I feed in (e.g. Y1-Y2; X1-X2).
> Instead, this does not happen If I do not combine levels (I obtain stats and plots). 
> 
> I thought the problem of having different number of channels across datasets was not an issue as the gui allows me to interpolate channels where these are missing.
> 
> Any hint is appreciated.
> 
> 
> Thanks in advance,
> 
> elia
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