[FieldTrip] select trial by previous trigger code

[Mads Jensen]

Hi all,

I would like to know if it is possible select a trail based on the 
previous trigger code?

I got a dataset (MEG, neuromeg) where sometimes the subject just press a 
button and sometimes a cue is shown and they then press the button, the 
button presses are coded "1" and the cue "2". So, what I would like is 
to datasets one with trials where there has been no cue and one dataset 
where the trials that have cue is. Is that possible to do automatically 
or do I have to do a "by hand"?

best wishes,
mads