Hi Nancy,<br><br>What is the format of your EEG data?<br><br>For some formats, you may need to import channel locations from an external file that has the channel labels and locations specified (see <a href="http://sccn.ucsd.edu/wiki/A03:_Importing_Channel_Locations">http://sccn.ucsd.edu/wiki/A03:_Importing_Channel_Locations</a> and <a href="http://sccn.ucsd.edu/wiki/Channel_Location_Files">http://sccn.ucsd.edu/wiki/Channel_Location_Files</a> ), using the readlocs() command. For other formats, the channel locations may come with the data when you first import the data into EEGLAB.<br>
<br>Once you have the channel locations defined, you can plot the channel locations by opening the EEGLAB interface, selecting Edit > Channel Locations, and clicking "Plot 2-D". Or, you can type "help topoplot" at the command line, and near the end of the documentation there is a sample of some code for plotting channel locations.<br>
<br>I'm less familiar with the commands for plotting the channel with its activity spectrum (<a href="http://sccn.ucsd.edu/wiki/Chapter_03:_Plotting_Channel_Spectra_and_Maps">http://sccn.ucsd.edu/wiki/Chapter_03:_Plotting_Channel_Spectra_and_Maps</a>), but maybe someone else on the list can help. <br>
<br>Best,<br>Steve Politzer-Ahles<br><br><div class="gmail_quote">On Tue, Apr 10, 2012 at 12:02 AM, nany _naning <span dir="ltr"><<a href="mailto:nany.naning@gmail.com">nany.naning@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi guys,<div><br></div><div>Im having problem regarding the EEGlab command. I have try hundred time to plot the channels locations of my 8 channels eeg. But it always come out with 1 eeg channel. I also want to plot the scalp location of a selected channel and its activity spectrum by click on Channel properties.but, the screen mention 'cannot process dataset without channel location information.Enter the filename via "Edit>Edit dataset info".For file format, enter'>>help readlocs' from the command line.'</div>
<div><br></div><div>~can someone help me by explaining what happen actually. I know that I may have made a mistakes from the beginning.But I just dont know where is it actually. TQ :(</div><div><br></div><div>Regards,</div>
<div>Nany</div><hr><span><a href="http://s.exps.me" target="_blank">I added cool Smileys to my email with Expresso Emoticons - try it here free!</a><div style="width:600px;min-height:150px"><a href="http://s.exps.me" target="_blank"><img src=""></a></div>
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