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Hi Andrew,<br class="">
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<div class="">It seems that FT chokes on some bookkeeping operation (the ‘unbalancing’ stuff), which is known to be tricky, and requires too many words, and is too tedious to explain why these obscure steps would be needed in the first place. Note that there
seems to exist an inconsistency between the topo and multi functions, so I think this should be looked into.</div>
<div class="">This being said, given your error stack it looks as if you run into this because you try to create a layout from the sensor description in the data. I would advice to use one of the standard layouts we have on file (in the fieldtrip/template/layout
directory). The one you probably want to use is either cfg.layout = ‘4D248.lay’, or ‘4D248_helmet.mat’. (to be sure, just check the filenames in the directory, because I don’t know them from the top of my head). With an existing layout-filename in the cfg
you should not run into this.</div>
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<div class="">Best,</div>
<div class="">Jan-Mathijs</div>
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<div class="">On 29 Apr 2016, at 14:01, Reid, A.T. (Andrew) <<a href="mailto:A.Reid@psych.ru.nl" class="">A.Reid@psych.ru.nl</a>> wrote:</div>
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Hi all,<br class="">
<br class="">
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. <br class="">
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When I run ft_topoplotTFR on the same structure, I get the following error:<br class="">
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creating layout from data.grad<br class="">
undoing the invcomp balancing for the gradiometer definition<br class="">
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Error using ft_scalingfactor (line 181)<br class="">
cannot convert T to unknown<br class="">
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Error in ft_scalingfactor (line 94)<br class="">
factor = cellfun(@ft_scalingfactor, old(:), new(:));<br class="">
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Error in ft_apply_montage (line 309)<br class="">
scale = ft_scalingfactor(input.chanunit, montage.chanunitorg);<br class="">
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Error in undobalancing (line 37)<br class="">
sens = ft_apply_montage(sens, sens.balance.(sens.balance.current), 'inverse', 'yes', 'keepunused', 'yes', 'warning', 'no');<br class="">
<br class="">
Error in ft_prepare_layout>sens2lay (line 957)<br class="">
sens = undobalancing(sens);<br class="">
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Error in ft_prepare_layout (line 430)<br class="">
layout = sens2lay(data.grad, cfg.rotate, cfg.projection, cfg.style, cfg.overlap);<br class="">
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Error in ft_topoplotTFR (line 192)<br class="">
cfg.layout = ft_prepare_layout(cfg, varargin{:});<br class="">
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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..<br class="">
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Thanks!<br class="">
<br class="">
Andrew<br class="">
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____________________________________________________ </span><br style="font-family: 'Courier New', courier, monaco, monospace, sans-serif; font-size: 13px; background-color: rgb(255, 255, 255);" class="">
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<div class=""><font face="Courier New" size="2" class=""><span style="letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">Andrew Reid </span><br style="background-color: rgb(255, 255, 255);" class="">
<span style="letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">Postdoctoral Fellow </span><br style="background-color: rgb(255, 255, 255);" class="">
<span style="background-color: rgb(255, 255, 255);" class="">Department of Cognitive Artificial Intelligence</span></font></div>
<div class=""><font face="Courier New" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class="">Donders Institute for Brain, Cognition and Behaviour</span></font></div>
<div class=""><font face="Courier New" size="2" class=""><span style="background-color: rgb(255, 255, 255);" class="">Radboud University Nijmegen</span></font></div>
<div class=""><font face="Courier New" size="2" style="letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Web: <a href="http://andrew.modelgui.org/" class="">http://andrew.modelgui.org/</a><br style="background-color: rgb(255, 255, 255);" class="">
<span style="background-color: rgb(255, 255, 255);" class="">Tel: </span></font><font face="Courier New" size="2" class="">+31 (0)24 36 55931</font></div>
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