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<div class="moz-cite-prefix">Thank you!<br>
<br>
On 12/09/13 23:57, jan-mathijs schoffelen wrote:<br>
</div>
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cite="mid:39F4264B-5BA2-43AF-938F-1D8980BCD718@donders.ru.nl"
type="cite">
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Hi Matt,
<div><br>
</div>
<div>Yes, it's possible. The only thing you should change in your
approach is step 3: use ft_redefinetrial, rather than
ft_preprocessing</div>
<div><br>
</div>
<div>So:</div>
<div><br>
</div>
<div>
<div bgcolor="#FFFFFF" text="#000000">1. Preprocessing step on
continuous data with filtering.<br>
<i>cfg=[];</i><i><br>
</i><i>cfg.dataset = 'raw_data.fif';</i><i><br>
</i><i>cfg.bpfilter = 'yes';</i><i><br>
</i><i>cfg.bpfreq = [a b];</i><i><br>
</i><i>data = ft_preprocessing(cfg);</i><br>
<br>
2. Define trial.<br>
<i><br>
</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg = [];</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg.dataset = 'blabla';</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg.trialdef.xxx etc
some settings here.</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg =</i><i>
ft_definetrial(cfg);</i><br>
</div>
<div bgcolor="#FFFFFF" text="#000000">trl = cfg.trl;</div>
<div bgcolor="#FFFFFF" text="#000000"><br>
3. Preprocessing step for epoching data on filtered data.<br>
<i><br>
</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg = [];</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>cfg.trl = trl;</i></div>
<div bgcolor="#FFFFFF" text="#000000"><i>final_data =
ft_redefinetrial(cfg,data);</i><br>
<br>
</div>
</div>
<div><br>
</div>
<div>Best,</div>
<div>JM</div>
<div><br>
<div>
<div>On Dec 9, 2013, at 6:31 PM, Matthieu Rolland wrote:</div>
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<blockquote type="cite">
<div bgcolor="#FFFFFF" text="#000000"> Hi everybody,<br>
<br>
Is it possible to filter data prior to epoching? And more
generally is it possible to epoch data that has already
been preprocessed?<br>
<br>
I have tried without success many variations of this:<br>
<br>
1. Preprocessing step on continuous data with filtering.<br>
<i>cfg=[];</i><i><br>
</i><i>cfg.dataset = 'raw_data.fif';</i><i><br>
</i><i>cfg.bpfilter = 'yes';</i><i><br>
</i><i>cfg.bpfreq = [a b];</i><i><br>
</i><i>data = ft_preprocessing(cfg);</i><br>
<br>
2. Define trial.<br>
<i>cfg =</i><i> ft_definetrial(cfg);</i><br>
<br>
3. Preprocessing step for epoching data on filtered data.<br>
<i>final_data = ft_preprocessing(cfg,data);</i><br>
<br>
<br>
Thank you for your help.<br>
Matt<br>
<br>
</div>
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<div>Jan-Mathijs Schoffelen,
MD PhD </div>
<div><br>
</div>
<div>Donders Institute for
Brain, Cognition and
Behaviour, <br>
Centre for Cognitive
Neuroimaging,<br>
Radboud University
Nijmegen, The Netherlands</div>
<div><br>
</div>
<div>Max Planck Institute
for Psycholinguistics,</div>
<div>Nijmegen, The
Netherlands</div>
<div><br>
</div>
<div><a
moz-do-not-send="true"
href="mailto:J.Schoffelen@donders.ru.nl">J.Schoffelen@donders.ru.nl</a></div>
<div>Telephone:
+31-24-3614793</div>
<div><br>
</div>
<div><a
moz-do-not-send="true"
href="http://www.hettaligebrein.nl">http://www.hettaligebrein.nl</a></div>
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