combineplanar for 275-ch CTF data

[Daria Osipova]

Hi
I am trying to analyze 275-channel data but having trouble with combineplanar. I want to calculate planar gradient for posterior channels only (86 channels) and here's my configuration:
cfg = [];
cfg.channel = channelselection({'MLO', 'MRO', 'MRP', 'MLP', 'MZP', 'MZO'}, data.label);
cfg.planarmethod = 'sincos';
data_planar = megplanar(cfg, data);
comb =combineplanar([], data_planar);

data_planar.label contains 361 channels i.e. it includes 86*2=172 channels for which planar gradient has been calculated and the rest of the channels in the original non-planar form.

When I use combineplanar, I get 322 channels some of which are the orginal non-planar channels, some are the result of the combined planar gradient and some are not combined planar gradient.
I suspect this has something to do with checking for the layout (151 or 275 channels) since the same scheme seems to work ok for the old 151 -channel dataset.
Thanks in advance.
Bests, Dasha

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