<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">dear nicola,<br><br>i'm not sure what tutorial you are refering too. take a look here:<br><a href="http://neuroimaging.ruhosting.nl/fieldtrip/doku.php?id=fieldtrip:documentation:tutorial">http://neuroimaging.ruhosting.nl/fieldtrip/doku.php?id=fieldtrip:documentation:tutorial</a><br><br>read_data already is a low-level function that you should not have to deal with as enduser.<br>the first step is to tell fieldtrip when your relevant events occured (definetrial) and then to apply some preprocessing options (preprocessing.m).<br><br>from there on it all depends on what you want to find out and actually the nice examples in the tutorial should get you going (i.e. sending you scripts wouldn't help you more).<br>in the intro there is a useful overview of the major functions and how they relate.<br><br>Good luck & don't give up!<br><br>nathan<br><div><div><br></div><div>On 11.02.2009, at 20:43, Nicola Neumann wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Dear all,<br><br> Just starting to work with FIELDTRIP, I have the typical problems of a beginner and wondered whether you could help me with these. I conducted an MEG study (CTF, Vancouver whole-head system) in an old-new recognition paradigm.<br><br>1. From the tutorial it was not clear to me what the very first step is to analyze the data, and I tried the 'read_data' command (dat = read_data ('filename.ds');). However, there is an error message<br>Error in ==> /Applications/fieldtrip/fieldtrip-20090128/external/ctf/getCTFdata.p>getCTFdata at 28<br>Error in ==> read_data at 654<br> dat = getCTFdata(hdr.orig, [begtrial:endtrial], chanindx, 'T', 'double');<br><br>both for my own and your tutorial data. Do you have any idea, why the command does not work?<br><br>2. Could you maybe provide me with a skript 'from the very beginning" to avoid this kind of problems? I do not know either how the header information can be integrated (presumably with "read_header"), and how to go on to the next step of preprocessing.<br><br>Thank you very much for your help.<br>Nicola<br><br>----------------------------------<br>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also <a href="http://listserv.surfnet.nl/archives/fieldtrip.html">http://listserv.surfnet.nl/archives/fieldtrip.html</a> and <a href="http://www.ru.nl/fcdonders/fieldtrip">http://www.ru.nl/fcdonders/fieldtrip</a>.<br></div></blockquote></div><br></body></html><p>----------------------------------</p>
<p>The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis.</p>
<p> http://listserv.surfnet.nl/archives/fieldtrip.html</p>
<p> http://www.ru.nl/fcdonders/fieldtrip/</p>