[Eeglablist] problems with plotting data in eeglab

[Arnaud Delorme]

Dear Daniel,

> I have a further refinement on my question from yesterday.  When I  
> do the following:
>
> figure; erp = pop_erpimage(EEG,1, [5],[],strsetname,4,1,{},[],'' ,  
> 'yerplabel', '\muV', 'erp', 'on', 'limits',[NaN NaN -25 25 NaN NaN  
> NaN NaN] , 'cbar', 'on', 'vert',[170 300] ,'topo', { [5]  
> EEG.chanlocs EEG.chaninfo } );
>
> The erp variable now contains a matrix of data with 43 columns.   
> Since the dataset contains 46 events, I was wondering what is  
> contained within these 43 columns?  The numbers are close but short  
> a few ...


The size of the erp variable depends on the smoothing being applied to  
the dataset. For instance if you do smoothing of 5, then the first 2  
and last 2 trials will be removed.
To compute the actual ERP, just do

erp = men(EEG.data,3)

Best,

Arno

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