<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Min,<div><br></div><div>you continuous data is long enough but portions of it are too narrow (portions are defined as the data in between boundary events). Our filters are not optimal for use at these very low frequencies. There has been other messages related to this topic on the list.</div><div><br></div><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; "><a href="http://sccn.ucsd.edu/pipermail/eeglablist/2008/002190.html">http://sccn.ucsd.edu/pipermail/eeglablist/2008/002190.html</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; "><br></div></div><div>Best regards,</div><div><br></div><div>A. Delorme</div><div><br><div><blockquote type="cite">Filter error: continuous data portion too narrow (DC removed if highpass only)<br>Processing continuous data (369220:540100)<br>eegfilt() - performing 15000-point highpass filtering.<br>eegfilt() - highpass transition band width is 0.01 Hz.<br><br>What does this mean? Does it mean the filter failed? The sampling rate of my data is 500. The number of frames is 1385355.<br><br>Thanks a lot!<br><br>Min</blockquote></div></div></body></html>