[Eeglablist] Problem reading channel locations

arno arno at salk.edu
Tue Dec 13 17:56:07 PST 2005


Dear Alexander,

this error arises because the neural network toolbox is instaled on your 
computer (and contains a function named "cell2mat") and it is before the 
EEGLAB function "cell2mat" in the path. In the next release, this 
function in EEGLAB has been renamed "celltomat" to avoid this conflict. 
Similarly the function "h" which is causing a problem with an "eval" 
statement in the brainstorm toolbox has been renamed "eegh".

For your problem, change the path order.

Best,

Arno

Alexander Roth wrote:

> Hi all,
>
> I have a channel position file that consists of the following entries:
>
> channel number, radius, theta, phi
>
> Here’s an extract of the first three lines of this file as an example:
>
> 1,1,105,60
>
> 2,1,84,63
>
> 3,1,63,75
>
> When I’m trying to import this data with the command
>
> readlocs('F:\RohEEG\SZ\NetzPos.pos','filetype','custom','format',{'channum' 
> 'radius' 'theta' 'sph_phi'})
>
> I’m getting the following error message:
>
> readlocs() warning: Fewer columns in the input than expected.
>
> See >> help readlocs
>
> readlocs(): Inserting electrode labels automatically.
>
> ??? Subscripted assignment dimension mismatch.
>
> Error in ==> cell2mat at 46
>
> M(i,j) = C{i,j};
>
> Error in ==> readlocs at 588
>
> allchannum = cell2mat( { eloc.channum } );
>
> What am I doing wrong? I specified four columns in the readlocs() 
> command, so why does eeglab complain about to few columns in the input 
> file?
>
> Regards
>
> Alexander Roth
>
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>
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