[Eeglablist] Index error when reading Neuroscan channel .dat

[Cedric Cannard]

Dear Grace,

I didn't have to use a .dat file when I worked with Neuroscan data in the past, but here is something you can try: When you type {EEG.chanlocs.labels} in the command window, does it return the channel labels? If so, and if you followed the 10-20 template when you recorded your data, you should be able to simply import the default BEM channel locations (Edit > channel locations > Ok > Plot 2D to check visually > Ok). 

Hope this helps,

Cedric



------- Original Message -------
On Tuesday, December 6th, 2022 at 1:45 PM, Grace Margaret Harvie via eeglablist <eeglablist at sccn.ucsd.edu> wrote:


> Hi All,
> 
> Tried to send this same email yesterday but the filter didn't like it, so I'm sending it again.
> 
> I'm trying to read channel locations from the Neuroscan .dat file for a 40 channel Quik-Cap, and I keep getting an index error:
> 
> 
> Reading file (lines): 10 20 30 40 45
> Index in position 1 exceeds array bounds. Index must not exceed 45.
> 
> Error in readneurolocs (line 102)
> locs = locs(tmpind,:);
> 
> Error in readlocs (line 413)
> eloc = readneurolocs( filename );
> 
> Error in pop_chanedit (line 737)
> [chans] = readlocs(tmpargs{:});
> 
> Error while evaluating UIControl Callback.
> 
> 
> I'm not sure if this is something I'm doing/not doing (I am very new to all this, having only been using EEGLAB for a few weeks) or if I've stumbled across a bug? Regardless, any insight anyone has would be greatly appreciated. I have also attached the channel location file in case it is of any use.
> 
> Many thanks,
> Grace Harvie
> PhD Candidate, Faculty of Medicine and Health, University of Sydney
> Research Assistant, Brain Dynamics Centre, The Westmead Insitute for Medical Research
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