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Dear Martin,
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<div class="">Thanks for your message. Sorry to hear that you experience some issues. ft_dipolefitting has received a facelift recently, so it could be that the issue you report is a genuine problem. On the other hand, it could also be that something unexpected
happens due to an unexpected feature in your data, which causes an error in the changed code. Our battery of test functions apparently ran through just fine, causing the changed function to percolate into the relase version of the codebase. Yet, our tests
are not exhaustive, and it could be that there are user scenarios that we haven’t thought of.</div>
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<div class="">In order to be able to make the distinction between a genuine bug, and an interaction between features-of-the-specific-usecase and the updated code, could you investigate a bit more what’s going on, using the matlab debugger? If you put a breakpoint
in the code on line 442 (or so), or type ‘dbstop if error’ on the matlab command line, and then execute ft_dipolefitting again, you should be able to investigate the content of the variables. Specifically, it would be interesting to know what the content is
of the ‘sourcemodel' variable, as well as whether the variable ‘indx’ is properly created on line 442.</div>
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<div class="">Alternatively, you could send us some data (essentially the timelockds{4} + leadfield_eeg + headmodel_eeg which would allow us to reproduce the issue and, if needed, make a fix.</div>
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<div class="">Best wishes,</div>
<div class="">Jan-Mathijs</div>
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<blockquote type="cite" class="">
<div class="">On 1 Jul 2020, at 13:35, Martin Schaefer <<a href="mailto:martin.schaefer@ki.se" class="">martin.schaefer@ki.se</a>> wrote:</div>
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Dear all,</div>
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I ran into the following error message when calling the ft_dipolefitting function on my data:</div>
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<span class="">Error using reshape<br class="">
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<div class="">Number of elements must not change. Use [] as one of the size inputs to automatically calculate the appropriate size for that dimension.<br class="">
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<div class="">Error in ft_dipolefitting (line 444)<br class="">
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<div class=""> dip.pos = reshape(dip.pos,3,cfg.numdipoles)'; % convert to a Nx3 array<br class="">
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<div class="">Error in dipole_fitting (line 152)<br class="">
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<span class="">dipole_eeg_late = ft_dipolefitting(cfg, timelockeds{4});</span><br class="">
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My cfg commands:</div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); font-size: 10pt;" class="">cfg = [];</span><span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class=""><br class="">
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<span style="font-size: 10pt;" class="">cfg.gridsearch = 'yes'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.numdipoles = 1; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.symmetry = []; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.grid = leadfield_eeg; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.headmodel = headmodel_eeg; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.dipfit.metric = 'rv'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.model = 'regional'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.senstype = 'eeg'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.channel = 'all'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.nonlinear = 'yes'; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.latency = early_latency; </span><br class="">
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<span style="font-size: 10pt;" class="">cfg.backproject = 'yes'; </span><br class="">
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); font-size: 10pt;" class="">dipole_eeg_early = ft_dipolefitting(cfg, timelockeds{4});</span><br class="">
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class="">However, the code runs fine on an older version of fieldtrip (the one used during the last online fieldtrip workshop, I think it is
from 16-04-2020).</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class=""><br class="">
</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class="">So I'm not sure whether there is a bug in one of the versions or something else is wrong.</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class="">Does anyone else have issues with this?</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class=""><br class="">
</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class="">Best regards,</span></div>
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<span style="margin: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" class="">Martin</span></div>
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<a href="https://doi.org/10.1371/journal.pcbi.1002202" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://doi.org/10.1371/journal.pcbi.1002202</a></div>
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