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Hi!
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<div class="">I am trying to plot the topography of my LDA weights, but am having some trouble. I am using my own script to calculate the weights rather than any packages (e.g. DMLT, or MVPA-light), so the tutorials on the fieldtrip site haven’t been able to
help me. So far, I’ve simply tried adding the weights (a 306x1 length vector) as a field to my data structure. And trying this code:</div>
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<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">data.weights = weights;</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">cfg = [];</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">cfg.xlim =<span style="color: #a020f0" class="">'maxmin'</span>;</div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">cfg.zlim =
<span style="color: #a020f0" class="">'maxmin'</span>;</div>
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<span style="color: #000000" class="">cfg.layout = </span>'neuromag306all.lay'<span style="color: #000000" class="">;</span></div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">cfg.channel =
<span style="color: #a020f0" class="">'MEG'</span>;</div>
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<span style="color: #000000" class="">cfg.parameter = </span><span style="color: #a020f0" class="">'weights'</span><span style="color: #000000" class="">; </span></div>
<div style="margin: 0px; font-stretch: normal; line-height: normal;" class="">figure; ft_topoplotER(cfg,data); colorbar</div>
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Unsurprisingly, this doesn’t work. It results in the error 'field “weights" not present in data’. I assume because the weights field is not interpretable by the fieldtrip code. I guessed the lack of a dimord field for the weights might be underlying its lack
of interpretability, but playing around with that has not worked either. I’ve tried adding a ‘weightsdimord’ field with the [306x1] dimensions, but this also - unsurprisingly - didn’t work.</div>
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Is there a way around this? Will I need to use lower level functions than ft_topoplotER? If so, can anyone advise on how I might implement this?</div>
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Many thanks for your time,</div>
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Benjy</div>
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