<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Dear fieldtrippers, </div>
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<div>I am currently analysing data where I wanna look at different time frames around specific triggers. To do so, I was planning on doing all my preprocessing on continuous data and then afterwards epoching it. </div>
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<div>However, when trying to use the following code on my preprocessed data, I get an error message: </div>
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<div>cfg = [];<br/>
cfg.datafile = 'data.mat';<br/>
cfg.trialdef.eventtype = 'Stimulus';<br/>
cfg.trialdef.eventvalue = trialmarks;<br/>
cfg.trialdef.prestim = .1; % baseline<br/>
cfg.trialdef.poststim = .5; % post-baseline trial length<br/>
cfg = ft_definetrial(cfg);</div>
<div> </div>
<div>
<div>Error using ft_read_header (line 2158)<br/>
unsupported header format (matlab)</div>
<div>Error in ft_trialfun_general (line 78)<br/>
hdr = ft_read_header(cfg.headerfile, 'headerformat', cfg.headerformat);</div>
<div>Error in ft_definetrial (line 174)<br/>
[trl, event] = feval(cfg.trialfun, cfg);</div>
<div>Error in prepro_03_epoching (line 19)<br/>
e_data = ft_definetrial(cfg);</div>
</div>
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<div>The same code works if applied before ft_preprocessing. </div>
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<div>Is there a way to epoch data after preprocessing it?</div>
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<div>Cheers, </div>
<div>Irene</div></div></body></html>