Hi Arno,<br><br>Thank you for your suggestions. <br>I fixed it out later that it might because of my data. After highpass filter the error is disappear now. <br>Thanks<br><br><div class="gmail_quote">On Tue, Mar 8, 2011 at 2:02 PM, Arnaud Delorme <span dir="ltr"><<a href="mailto:arno@ucsd.edu">arno@ucsd.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style="word-wrap: break-word;">Dear Hui,<div><br></div><div>as the warning says, this is probably due to some problem with Matlab when computing the rank of your Matrix. You should upgrade to a newer Matlab version and this should be fine.</div>
<div><br></div><div>Best regards,</div><div><br></div><div>Arno<br><div><br><div><div><div></div><div class="h5"><div>On Feb 4, 2011, at 12:39 PM, hui zhang wrote:</div><br></div></div><blockquote type="cite"><div><div></div>
<div class="h5">Hi,<br><br>When using the function of pop_runica to run ica on epoched data, I got the following message: <br><i><br>Attempting to convert data matrix to double precision for more accurate ICA results.<br>
Warning: fixing rank computation inconsistency (39 vs 38) most likely because running under Linux 64-bit MatlabData rank (39) is smaller than the number of channels (62).<br>
<br>Input data size [39,654000] = 39 channels, 654000 frames/nAfter PCA dimension reduction,<br> finding 39 ICA components using extended ICA.</i><br><br>The matlab code: <br><i>eeglab;<br>EEG = pop_loadset('filename',filename);<br>
EEG = pop_runica(EEG, 'icatype', 'runica', 'chanind',[2:63], 'extended', 1);</i><br><br>I ran this code on datasets of previous project, it seems fine. <br>The version of eeglab installed on my computer is: eeglab9.0.1.2b.<br>
<br>Does anyone have any idea on this? Is there any ways I can turn the pca off in my code? <br><br>Thanks in advance!<br><br>-Hui<br></div></div>
_______________________________________________<br>Eeglablist page: <a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html" target="_blank">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>To unsubscribe, send an empty email to <a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu" target="_blank">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>
For digest mode, send an email with the subject "set digest mime" to <a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a></blockquote></div><br></div></div></div>
</blockquote></div><br>