[Eeglablist] Error while precomputing STUDY: NaN values in cluster.sets

Makoto Miyakoshi mmiyakoshi at ucsd.edu
Tue Dec 1 12:25:46 PST 2015

Dear Nikola,

I've seen this. In my case at least, it was because EEGLAB's default set up
file was not correctly figured out, which prevented EEGLAB from creating
EEG.icaact etc (do you remember that there are some items in 'memory and
other options' that determines what to do with computed ica data... maybe
related to that). After fixing the default parameter file, it start to work

I don't know if this is also the case for you, but just in case please
check it out.


On Mon, Nov 23, 2015 at 3:33 PM, Nikola Vukovic <vukovicnikola at gmail.com>

> Dear EEGLAB list
> I would be very grateful is someone could help me out with an error I've
> been getting. When I try to precluster components in a given STUDY (it
> happens for several study files), I get the following error:
> because some datasets do not have ICA pairs. Look for NaN values in
> STUDY.cluster(1).sets which indicate missing datasets. Each column in this
> array indicate datasets with common ICA decompositions.
> Looking inside the cluster(1).sets, I can indeed find some NaN fields, suggesting not all files have associated ICA decomposition data. This, however, is puzzling because I made sure to do ICA on each subject's dataset *before* epoching, meaning that all sets for individual conditions share the same weights for a subject. After getting this error I even tried to copy the weights (EEG.icawinv + EEG.icasphere + EEG.icaweights + EEG.icachansind) from the unepoched set to all the epoched ones.
> Did anyone have this error too, and how could it be solved?
> Thanks for any help,
> Nikola
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Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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