<div dir="ltr">Dear Shahar,<div><br></div><div>dftfilt3() generates wavelet, and it figures out these numbers own its own. We can't specify exactly how long (usually it becomes slightly longer than we desire... for example, 3 Hz at lowest and 3 cycles should be 999 ms, but it usually generates a window that is something around 1200 ms long). If you want obtain the exact value, you need cut and try.</div><div><br></div><div>Makoto</div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 7, 2015 at 4:25 AM, shahar <span dir="ltr"><<a href="mailto:shahars10@gmail.com" target="_blank">shahars10@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hello Tarik,</div><div>I've followed your link, and the answer for this question is that half of the window should be cut off at the begining and at the end of the picture. Actually, it's possible to control the window size by the input 'winsize' when using the command newtimef. However, in fact, the length of the cut-off is different than half of the window. My question: is there an accurate way to control the length of the cut-off ? I can use different window sizes and take the one which looks best, but I don't want to use this method.</div><div>Thank you,</div><div><br></div><div>Shahar</div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 7, 2015 at 7:23 AM, Tarik S Bel-Bahar <span dir="ltr"><<a href="mailto:tarikbelbahar@gmail.com" target="_blank">tarikbelbahar@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="color:rgb(51,51,153)">Hello Shahar, I hope this helps, cheers!</div><div class="gmail_default" style="color:rgb(51,51,153)">This is likely due to a property of how time-frequency is computed.</div><div class="gmail_default" style="color:rgb(51,51,153)">You can read more about this in Mike Cohen's book on time-frequency.</div><div class="gmail_default" style="color:rgb(51,51,153)">Searching through previous eeglablist posts can help you.</div><div class="gmail_default" style="color:rgb(51,51,153)">I tried typing the following into google </div><div class="gmail_default" style="color:rgb(51,51,153)">"eeglablist time-frequency windows cut off"</div><div class="gmail_default" style="color:rgb(51,51,153)">The first resulting link seems directly related to your question:</div><div class="gmail_default" style="color:rgb(51,51,153)"><a href="http://sccn.ucsd.edu/pipermail/eeglablist/2014/008968.html" target="_blank">http://sccn.ucsd.edu/pipermail/eeglablist/2014/008968.html</a><br></div><div class="gmail_default" style="color:rgb(51,51,153)"><br></div><div class="gmail_default" style="color:rgb(51,51,153)"><br></div><div class="gmail_default" style="color:rgb(51,51,153)"><br></div><div class="gmail_default" style="color:rgb(51,51,153)"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Thu, Mar 5, 2015 at 4:39 AM, shahar <span dir="ltr"><<a href="mailto:shahars10@gmail.com" target="_blank">shahars10@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div><div><div dir="ltr"><div>Hello,</div><div>I'm trying to display a time-freuency transform. The epoch's time interval should be [0 14.5] sec, but the begining and the end of the epoch's time are truncated. The same problem occures when I use the time-frequency transforms in the EEGLAB, and also when I use the command newtimef. Anyone has an idea how to fix this problem ?</div><div>You can view the resulted chart in the following link:</div><div><a href="http://dc673.4shared.com/download/RVO09duUba/spectrogram.jpg?lgfp=3000" target="_blank">http://dc673.4shared.com/download/RVO09duUba/spectrogram.jpg?lgfp=3000</a></div><div>Thank you,</div><div><br></div><div>Shahar</div></div>
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