<div dir="ltr"><div>Dear Anne,<br></div><div><br></div><div>I think ft_timelockgrandaverage expects your individual average (iavg) data structures to have equal label fields. I know that trying to "grandaverage" iavgs with different channel labels led to grand averages data structures with empty-matrix as values. If fieldtrip find labels common to all the iavg data structures they will be averaged. They are averaged on a "label" name basis, not on an ordinal basis. If you set cfg.channel to, say 1:3, and the first three channels of all your iavg datas do not have exactly the same label names it will return an empty matrix or throw an error. Hence, if you want to grand average iavgs with different channel labels, you need to previously manually change the labels so they are the same (maybe there is a more elegant solution than this workaround). </div>
<div><br></div><div>I hope it was helpful, and correct, otherwise, I wish I will be corrected; Always give it a try first. It may work, it may throw an error, but understanding it you will be nearer to the solution</div></div>
<div class="gmail_extra"><br><br><div class="gmail_quote">2013/10/22 van Hoogmoed, Anne H - (annevanhoogmoed) <span dir="ltr"><<a href="mailto:annevanhoogmoed@email.arizona.edu" target="_blank">annevanhoogmoed@email.arizona.edu</a>></span><br>
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<p class="MsoNormal">Dear all,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I’m using ft_timelockgrandaverage to make a grand average of my ERP data. However, the order of the channels is different for some people I want to include in the average. Does ft_timelockgrandaverage take this into account (i.e. does it
average on channel name or on channel order)? Or do the channels need to be ordered the same for each participant. And if so, how should I do this?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks for your help,<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></p><span class="HOEnZb"><font color="#888888">
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Anne<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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