[FieldTrip] Selecting Trials from Blocks

[Ausaf Bari]

I have large .cnt (neuroscan) files with trials under different conditions.
The trials are marked by triggers but the conditions are not marked. I have
my own record of timestamps for the start of each condition block. How do
cut out a block (e.g. 30 minute block) and then subsequently break that
into trials based on triggers?

I know you can use ft_redefinetrial to choose a section based on a
begsample and endsample but I'm having trouble using the resulting data
structure as an input to ft_definetrial.

-AB
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