<html><head><base href="x-msg://433/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Ibti,<div><br></div><div>in addition to Makoto's suggestion, you can also interpolate the data to a "fake" data channel using the eeg_interp function. From the GUI, you could also add a channel and use the menu "Tools > Interpolate electrodes". This function will use spherical interpolation while topoplot does not use spherical interpolation.</div><div><br></div><div>Best,</div><div><br></div><div>Arno</div><div><br><div><div>On 26 Mar 2013, at 09:15, Ibtissem Khouaja b.Fraj wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: Tahoma; font-size: 14px; "><div dir="ltr"><div><div dir="ltr"><div style="font-family: Tahoma; font-size: 10pt; "><br class="Apple-interchange-newline">Hello, </div><div style="font-family: Tahoma; font-size: 10pt; ">thank you for your reply.</div><div style="font-family: Tahoma; font-size: 10pt; "><br></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; ">My project is just to insert a new point that does not really exist on the scalp.</span></font></div><div><div style="font-family: Tahoma; font-size: 13px; ">After the prediction of the amplitude variation of this point at any time, it will be covered by an electrode and we test the validity of the prediction algorithm.</div><div style="font-family: Tahoma; font-size: 13px; ">For example, between points Cz, Pz and C4 that already knows the amplitude variation, we seek a point X which lies between these three points.</div><div style="font-family: Tahoma; font-size: 13px; "><br></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxAp!
ple-style-span" style="font-size: 13px; ">There exists an algorithm very useful in image processing and in increasing the number of pixels in an image, is called the bilinear interpolation algorithm. I don't know if it can be helpful in my project or not.</span></font></div></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; ">I work with Matlab and I need some algorithme to solve the problem.</span></font></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; "><br></span></font></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; ">help me please, thank you!</span></font></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; "><br></span></font></div><div><font class="ecxApple-style-span" face="Tahoma" !="" size="3"><span class="ecxApple-style-span" style="font-size: 13px; ">Ibti ssem</span></font></div><div><font class="ecxApple-style-span" face="Tahoma" size="3"><span class="ecxApple-style-span" style="font-size: 13px; "><br></span></font></div><br><br><div style="font-family: Tahoma; font-size: 10pt; "><div id="ecxSkyDrivePlaceholder"></div>> Date: Tue, 12 Mar 2013 14:27:52 -0400<br>> Subject: Re: [Eeglablist] signal prediction in Matlab<br>> From:<span class="Apple-converted-space"> </span><a href="mailto:vivek.yadav@gmail.com">vivek.yadav@gmail.com</a><br>> To:<span class="Apple-converted-space"> </span><a href="mailto:ibtissem.khouaja@live.fr">ibtissem.khouaja@live.fr</a><br>><span class="Apple-converted-space"> </span><br>> hello,<br>> try spherical interpolation in EEG.<br>> thanks<br>><span class="Apple-converted-space"> </span><br>><span class="Apple-converted-space"> </span><br>> On Tue, Mar 12, 2013 at 4:33 AM, Ibtissem Khouaja b.Fraj<br>> <<a href="mailto:ibtissem.khouaja@live.fr">ibtissem.khouaja@live.fr</a>> wrote:<br>> ></div><div style="font-family: Tahoma; font-size: 10pt; ">--------------------------------------------------------------------------------</div><div style="font-family: Tahoma; font-size: 10pt; "><br></div><div style="font-family: Tahoma; font-size: 10pt; "><br></div><div style="font-family: Tahoma; font-size: 10pt; "> Hi all,<br>> &g! t; knowing the location of recording signals on the scalp, I want to pred new<br>> > locations not covered by electrodes to refine the result.<br>> > I need an algorithme in Matlab to do the linear prediction from the matrice<br>> > describing 18 sites.<br>> ><br>> > hope you understand my question.<br>> > Thank a lot.<br>> ><br>> > _______________________________________________<br>> > Eeglablist page:<span class="Apple-converted-space"> </span><a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>> > To unsubscribe, send an empty email to<span class="Apple-converted-space"> </span><a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>> > For digest mode, send an email with the subject "set digest mime" to<br>> ><span class="Apple-converted-space"> </span><a href="mailto:eeglablist-request@sccn.ucsd.edu">eeglablist-request@sccn.ucsd.edu</a><br>><span class="Apple-converted-space"> </span><br>><span class="Apple-converted-space"> </span><br>><span class="Apple-converted-space"> </span><br>> --<span class="Apple-converted-space"> </span><br>> Vivek Yadav, PhD<br>> Post-Doctoral Scholar,<br>> Movement Neuroscience Lab,<br>> 29 Rec Hall,<br>> Pennsylvania State University,<br>> University Park, PA-16801<br>><span class="Apple-converted-space"> </span><br>> "Nothing in life is to b! e feared, it is only to be understood." ~ Marie Curie<br></div></div></div></div>_______________________________________________<br>Eeglablist page:<span class="Apple-converted-space"> </span><a href="http://sccn.ucsd.edu/eeglab/eeglabmail.html">http://sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>To unsubscribe, send an empty email to<span class="Apple-converted-space"> </span><a href="mailto:eeglablist-unsubscribe@sccn.ucsd.edu">eeglablist-unsubscribe@sccn.ucsd.edu</a><br>For digest mode, send an email with the subject "set digest mime" to<span class="Apple-converted-space"> </span><a href="mailto:eeglablist-request@sccn.ucsd.edu">eeglablist-request@sccn.ucsd.edu</a></span></span></blockquote></div><br></div></body></html>