[Eeglablist] how to recover the cluster-average weight vector from the STUDY.cluster structure

[Bernie C. Till]

Hi all:

Can anyone tell me where in the STUDY.cluster structure the weight vector is
stored?  I wish to use some of the cluster-average scalp maps as spatial
filters to extract ERPs from the EEG data for each subject.  However, I
can't find the weight vector that defines the scalp maps.  All I can find is
STUDY.cluster.topo, which seems to be the complete scalp map, ready for
plotting, but useless for spatially filtering the EEG data...

Assuming that the cluster-average weight vector is, for some bizarre reason,
not stored with each cluster, can I reconstruct it by simply averaging
together the indicated rows of the weight matrices for each of the subjects
in the cluster?  In this case, I imagine that I would need cluster.comps,
cluster.sets and cluster.topopol... but how exactly do I use them to
construct the weight vector corresponding to the cluster-average scalp map?

Finally, the documentation states "the cluster.topoall cell array contains
one element for each component and each condition."  What information for
these elements contain?

Many thanks for any help you can provide.


Regards,
-- Bernie Till