[Eeglablist] Help with runica.m

Marta Zakrzewska marta.zakr at gmail.com
Mon Nov 2 06:06:32 PST 2015


Can you provide the code that you're using? Basing on your error message,
you might have a typo.

As for the input used by runica - you need to form your data into a channel
by frames(samples) data (of 'double' type if I remember). So in your case
this should be a 19x200000 matrix. Each row should be a channel. Then this
code should work just fine:

[weights,sphere] = runica(data)

2015-10-22 20:08 GMT+02:00 Elí Vásquez <ev.netek at gmail.com>:

> Hi!
> I have a question about the runica algorithm. I´ve already ran in trough
> eeglab graphical interface with no problems.
> By the way I'm using a 19ch Cognionics dry electrode headset. And I made a
> program in C# to get the signals which I then write to a CSV file, each
> column is a channel.
> Each file consists of 200000, 200 seconds at 1000 samples per second.
> Now I need to run ICA on my samples to the csv file imported to Matlab.
> And I have problems when I run the function. I get errors like these:
> Error: File: runica.m Line: 138 Column: 4
> Unbalanced or unexpected parenthesis or bracket.
> It seems that i have not specified the arguments correctly
> but then the format is the following.
>  Usage:
> %         >> [weights,sphere] = runica(data); % train using defaults
> %    else
> %         >> [weights,sphere,compvars,bias,signs,lrates,activations] ...
> %                             = runica(data,'Key1',Value1',...);
> % Input:
> %    data     = input data (chans,frames*epochs).
> Can you help me specify the arguments so I can run the function without
> problems?
> I thank you in advance for your time.
> Eli
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