reading EGI data

[Giovanni Piantoni]

Dear all,

I get this incredible error when I try to read EGI data. If the first
data point is odd, it works well (EGI_data_odd.png), while if the
first data point is even, then the result doesn't make much sense
(EGI_data_even.png).
You can replicate it with this data:
http://bit.ly/cdqzZH

and the following code:

cfg = [];
cfg.dataset = 'EGIrecording.raw';
cfg.trialdef.triallength = Inf;
def = ft_definetrial(cfg);
data = ft_preprocessing(def);
plot(data.trial{1}(1,:)) % odd

def.trl(1) = 2;
data = ft_preprocessing(def);
plot(data.trial{1}(1,:)) % even

Does anybody have an idea on what's going on?

Thanks,
Gio

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MATLAB Version 7.9.0.529 (R2009b)
Operating System: Linux 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12
04:38:19 UTC 2010 x86_64
Java VM Version: Java 1.6.0_12-b04 with Sun Microsystems Inc. Java
HotSpot(TM) 64-Bit Server VM mixed mode
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--
Giovanni Piantoni, Ph.D. student
Dept. Sleep & Cognition
Netherlands Institute for Neuroscience
Meibergdreef 47
1105 BA Amsterdam (NL)

+31 (0)20 5665492
g.piantoni at nin.knaw.nl
www.nin.knaw.nl/research_groups/van_someren_group/

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