<div dir="ltr"><div>Hi Arjen,</div><div><br></div><div>Thank you for your reply.</div><div>Your email got forwarded successfully.</div><div><br></div><div>So currently I tried using 'ft_definetrial' and 'ft_preprocessing'.</div><div>'ft_definetrial' returns an error when used with 'ft_trialfun' set to default.</div><div>Below is the code I used (and 'signal_raw.mat' is a fieldtrip raw data and it has all three fields you mentioned).</div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">cfg.dataset = 'signal_raw.mat';</font></div><div><font color="#0b5394">cfg.trialdef.event = subj_globals.buttonpress_times;</font></div><div><font color="#0b5394">cfg = ft_definetrial(cfg);</font></div><div><br></div><div>So I simply call ft_definetrial with minimal configuration and here's the error I got:</div><div><font color="#0b5394"><br></font></div><div><div><font color="#0b5394">Error using ft_read_header (line 2194)</font></div><div><font color="#0b5394">unsupported header format "matlab"</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">Error in ft_trialfun_general (line 78)</font></div><div><font color="#0b5394">hdr = ft_read_header(cfg.headerfile, 'headerformat', cfg.headerformat);</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">Error in ft_definetrial (line 177)</font></div><div><font color="#0b5394"> [trl, event] = feval(cfg.trialfun, cfg);</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">Error in trialdef_alsotest (line 12)</font></div><div><font color="#0b5394">cfg = ft_definetrial(cfg);</font></div></div><div><font color="#0b5394"><br></font></div><div>I circumvented this issue by using my own trialfun ('ft_trialfun_test' in the code).</div><div>We already have all the necessary timestamps so I could build a very simple one.<br></div><div>Here's a new code (I ran the code with minimal cfg for 'ft_preprocessing' to isolate the problem):</div><div><font color="#0b5394"><br></font></div><div><div><font color="#0b5394">cfg.dataset = 'signal_raw.mat';</font></div><div><font color="#0b5394">cfg.trialfun = 'ft_trialfun_test'; </font></div><div><font color="#0b5394">cfg.trialdef.event = subj_globals.buttonpress_times;</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">cfg = ft_definetrial(cfg);</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">cfg.continuous = 'yes';</font></div><div><font color="#0b5394">buttonpress_hg = ft_preprocessing(cfg);</font></div></div><div><br></div><div>And here's the error I got:</div><div><br></div><div><div><font color="#0b5394">Error using ft_read_header (line 2194)</font></div><div><font color="#0b5394">unsupported header format "matlab"</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">Error in ft_preprocessing (line 397)</font></div><div><font color="#0b5394"> hdr = ft_read_header(cfg.headerfile, 'headerformat', cfg.headerformat, 'coordsys', cfg.coordsys, 'coilaccuracy',</font></div><div><font color="#0b5394"> cfg.coilaccuracy);</font></div><div><font color="#0b5394"><br></font></div><div><font color="#0b5394">Error in test_trialdef (line 18)</font></div><div><font color="#0b5394">buttonpress_hg = ft_preprocessing(cfg);</font></div></div><div><br></div><div>So both error come from 'ft_read_header'.</div><div>I've been looking at the code but it seemed quite hard to debug as 'ft_read_header' uses a lower level function that directly reads from the file (hence it seemed like a simple fix like passing in a fake header wouldn't work).</div><div>Am I doing something wrong here?</div><div><br></div><div>Again, thank you for your reply and let me know if you need more information.</div><div><br></div><div>Best,</div><div>Rachel</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 14, 2016 at 12:10 AM, Arjen Stolk <span dir="ltr"><<a href="mailto:a.stolk8@gmail.com" target="_blank">a.stolk8@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 Rachel,<br>
<br>
What is the error you're receiving, and how are you calling ft_preprocessing?<br>
<br>
If the data is in raw format (incl a trial, time and label field), it should theoretically be possible to use ft_preprocessing on it, eg;<br>
cfg = []<br>
cfg ..<br>
data = ft_preprocessing(cfg, raw)<br>
<br>
where raw is your data as described above.<br>
<br>
Best,<br>
Arjen<br>
<div><div class="h5"><br>
> On Jul 13, 2016, at 11:50 PM, Nakyung Lee <<a href="mailto:rleese12@berkeley.edu">rleese12@berkeley.edu</a>> wrote:<br>
><br>
> Dear FieldTrip community,<br>
><br>
> My name is Rachel Lee and I'm a research assistant in Prof. Ming Hsu's lab in UC Berkeley.<br>
><br>
> We currently have a .Tbk file, a .Tdx file, .tev file, .tsq file to preprocess and analyze but it seems like those data formats are not yet supported by FieldTrip.<br>
> So, instead of using those raw data files, we've been trying to find a workaround by transforming them into a .mat file (and casting the .mat file into a raw datatype in FieldTrip by manually assigning fields to it).<br>
> This hasn't been so successful; we've been unable to call ft_preprocessing because of the lack of a proper header format (which is needed in ft_read_header, one of the lower level functions that ft_preprocessing calls).<br>
> I've been looking at the codes but been unable to come up with a solution.<br>
><br>
> Does anyone have a similar experience?<br>
> Is there any way to circumvent this issue?<br>
> Any type of help would be appreciated.<br>
><br>
> Thank you,<br>
> Rachel Lee<br>
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