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Dear Vladimir and SPM experts,
I'd like to combine planar gradiometers for sensor space stats analysis. In my pre-processing pipeline, my combine_planar step sits in between Epoched filtered data and Average (e.g. Epoch > Baseline > Filter > Combine Planar > Average). I've checked that SPM recognises the channel labels from the raw data (MEGPLANAR), and I've tried with both Maxfiltered and raw data.
Below is the error message I keep getting and its corresponding lines, if that helps :
Failed 'Combine planar'
Output argument "planar" (and maybe others) not assigned during call to "/apps/spm12/spm_eeg_planarchannelset.m>spm_eeg_planarchannelset".
In file "/apps/spm12/spm_eeg_combineplanar.m" (v5533), function "spm_eeg_combineplanar" at line 41.
In file "/mnt/coraid0/apps/spm12b-rev5892/config/spm_cfg_eeg_combineplanar.m" (v5377), function "eeg_combineplanar" at line 58.
at line 41
chanset = spm_eeg_planarchannelset(D.chanlabels);
at line 58
out.D = spm_eeg_combineplanar(S);
out.Dfname = {fullfile(out.D)};
Would appreciate any advice on this, or even just a holler that I've missed out on something basic.
Thanks very much in advance!
Shu