<div dir="ltr"><div>Hi all,</div><div><br></div><div>I have a similar problem, even though I use double precision. It always gives me the full rank, with average reference and a few interpolated channels. If I calculate an AMICA, I manually subtract the number of interpolated channels plus 1 from EEG.nbchan to get the rank.</div><div><br></div><div>Best,</div><div>Marius<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">2018-07-31 19:18 GMT+02:00 Makoto Miyakoshi <span dir="ltr"><<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear Hamed,<div><br></div><div><span class="">
<div style="font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">> Do you know what can be my fault or what is the reason of this issue?</div><br class="m_-4714887998814368994gmail-Apple-interchange-newline"></span>
Try rank(double(EEG.data')) Most likely that's because your input was single precision data.</div><div><br></div><div>Makoto<br><br><div class="gmail_quote"><span class=""><div dir="ltr">On Mon, Jul 23, 2018 at 1:53 PM Hamed Taheri <<a href="mailto:hamedtaheri@yahoo.com" target="_blank">hamedtaheri@yahoo.com</a>> wrote:<br></div></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div><div>Hello all,</div><div><br></div><div>I have a problem with rank(EEG.data).</div><div>Actually, before running the ICA I'm using rank(EEG.data) to run the ICA in the proper rank with PCA. But the given results by rank(EEG.data) are very strange.</div><div>For example, I have 64 channels EEG and after preprocessing I have 60 but the rank(EEG.data) gives me 11 or for another data 20. <br></div><div>I've tried with several data and all results were strange. I was in doubt maybe I made a bridge between channels during injecting gel but I've tried with another data which I'm sure they are perfect but I see the same problem. <br></div><div>Do you know what can be my fault or what is the reason of this issue?</div><div>I remember if data wasn't full rank the EEGLAB gave us a message before running the ICA which you will have fewer ICs and showed up the number of ICs but now I don't have this message even if I know I interpolated for instance 5 channels. <br></div><div><br></div><div>I would be so thankful if you could help me.</div><div><br></div><div>Hamed<br></div><div><br></div><div><br></div><div class="m_-4714887998814368994m_1700616919940236976ydp90ad2769signature"><div style="font-size:13px"><br></div></div></div></div></div></div></span>______________________________<wbr>_________________<br>
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