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Dear Marta,
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<div class="">If you are sure that the dipole positions in dummy_source_trans and source_plot are topologically equivalent, you could try and replace source_plot.pos with dummy_source_trans.pos.</div>
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<div class="">Given the absence of additional information about the error in ft_dipolefitting, there’s no way I can comment on that<br class="">
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<div class="">On 19 Jan 2023, at 22:31, Marta Stojanović via fieldtrip <<a href="mailto:fieldtrip@science.ru.nl" class="">fieldtrip@science.ru.nl</a>> wrote:</div>
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Hi, <br class="">
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I hope this question finds you well. I'm trying to use the ft_virtualchannel function to parcellate my source data obtained from ft_sourceanalysis, and time lock data of all trials from ft_covariance.<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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My code looks like the following: <br class="">
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cfg = [];<br class="">
cfg.method = 'pca';<br class="">
cfg.pos = 'pos';<br class="">
parc_trls = ft_virtualchannel(cfg, tlck_all, dummy_source_trans, source_plot);<o:p class=""></o:p></div>
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Where source_plot is volume+label data, dummy_source_trans is source data, and tlck_all is time lock. The source plot is a downscaled, interpolated version of the AAL atlas (source data interpolated onto the AAL atlas). <o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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My structs look like the following: <o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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tlck_all = <o:p class=""></o:p></div>
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<span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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time: [1×1018 double] <o:p class=""></o:p></div>
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label: {245×1 cell} <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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grad: [1×1 struct] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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sampleinfo: [141×2 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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trial: [141×245×1018 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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trialinfo: [141×2 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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dimord: 'rpt_chan_time' <o:p class=""></o:p></div>
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cov: [141×245×245 double] <o:p class=""></o:p></div>
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cfg: [1×1 struct] <o:p class=""></o:p></div>
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avg: [1×1 struct]<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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<o:p class=""> </o:p></div>
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dummy_source_trans = <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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time: 0 <o:p class=""></o:p></div>
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cfg: [1×1 struct] <o:p class=""></o:p></div>
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dim: [26 33 28] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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inside: [24024×1 logical] <o:p class=""></o:p></div>
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pos: [24024×3 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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method: 'average' <o:p class=""></o:p></div>
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avg: [1×1 struct]<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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source_plot = <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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dim: [26 33 28] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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transform: [4×4 double] <o:p class=""></o:p></div>
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unit: [1×1 struct] <o:p class=""></o:p></div>
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tissue: [26×33×28 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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tissuelabel: {1×116 cell} <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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cfg: [1×1 struct] <o:p class=""></o:p></div>
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inside: [24024×1 logical] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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pow: [24024×1 double] <span class="Apple-converted-space"> </span><o:p class=""></o:p></div>
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eta: [24024×1 double]<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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I receive the following error when trying to run the ft_virtualchannel: Error using ft_virtualchannel (line 175): the requested dipole position is > 1 mm away from the closest source position. I've used cfg.parcellation = 'tissue' instead of cfg.pos, I've played
around with the measurement units of the time lock, source, and atlas data.<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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I've also tried to use ft_dipolefitting on tlck_all, but I receive the following error: <o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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Unrecognized field name "avg". Error in ft_dipolefitting (line 269)Vdata = data.avg(seldata, :);<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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This error persists both when I include 'avg' included and not included in the struct. <o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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I wonder if you might have any tips on how to run the ft_virtualchannel properly. I can of course provide more details if necessary. <o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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Thanks in advance!<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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Best,Marta<o:p class=""></o:p></div>
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<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">fieldtrip
mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<a href="https://mailman.science.ru.nl/mailman/listinfo/fieldtrip" 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://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">
<a href="https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!41tr5QP5vzFjJgdDw-D7ZDbYEAO_awhe-4opaXxzDrBXcCMD1BqQO0brFJn_0ssNwjePB6Edit0XhSJTux2-HrU3JmVAeVrtp5s7fw$" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://urldefense.com/v3/__https://doi.org/10.1371/journal.pcbi.1002202__;!!HJOPV4FYYWzcc1jazlU!41tr5QP5vzFjJgdDw-D7ZDbYEAO_awhe-4opaXxzDrBXcCMD1BqQO0brFJn_0ssNwjePB6Edit0XhSJTux2-HrU3JmVAeVrtp5s7fw$</a><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""></span></div>
</blockquote>
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