[FieldTrip] Unit error using ft_topoplotTFR.m

[Reid, A.T. (Andrew)]

Hi all,

I am trying to do a simple topo plot of some time-locked HCP data. Running ft_multiplotTFR on the TFR output structure works fine.

When I run ft_topoplotTFR on the same structure, I get the following error:

creating layout from data.grad
undoing the invcomp balancing for the gradiometer definition

Error using ft_scalingfactor (line 181)
cannot convert T to unknown

Error in ft_scalingfactor (line 94)
 factor = cellfun(@ft_scalingfactor, old(:), new(:));

Error in ft_apply_montage (line 309)
 scale = ft_scalingfactor(input.chanunit, montage.chanunitorg);

Error in undobalancing (line 37)
   sens = ft_apply_montage(sens, sens.balance.(sens.balance.current), 'inverse', 'yes', 'keepunused', 'yes', 'warning', 'no');

Error in ft_prepare_layout>sens2lay (line 957)
   sens = undobalancing(sens);

Error in ft_prepare_layout (line 430)
 layout = sens2lay(data.grad, cfg.rotate, cfg.projection, cfg.style, cfg.overlap);

Error in ft_topoplotTFR (line 192)
cfg.layout = ft_prepare_layout(cfg, varargin{:});


The data.grad.balance.invcomp.chanunitnew cell array appears to be the culprit, as it contains “unknown” while the main data.chanunit has unit “T”. Not sure how to proceed here..

Thanks!

Andrew


____________________________________________________

Andrew Reid
Postdoctoral Fellow
Department of Cognitive Artificial Intelligence
Donders Institute for Brain, Cognition and Behaviour
Radboud University Nijmegen
Web: http://andrew.modelgui.org/
Tel: +31 (0)24 36 55931







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