Hi Larissa,
One issue is that you have at least one case where the log command of the Key element is missing "all" (at least in the current code at https://farm.pcibex.net/r/XSJAnP/, where it concerns the trials labeled “trial_1_no_cue_DOWN”)
In the absence of a keypress, the line will have Key as its parameter instead of PressedKey, NA as its value and Never in the EventTime column. So filter(Parameter %in% c("Key","PressedKey")) %>% will exclude those lines where the participant never pressed a key. Try replacing it with filter(Parameter %in% c("Key","PressedKey","Key")) %>%
I’m not sure how to handle the block issue for now. You are correct: having NAs in place of timestamps messes with the block column and will assign block 0 to those NA rows. One solution would be to use the linear order of the rows to assign blocks rather than just the EventTime column, but I can’t think of an immediate way of doing it off the top of my head
Jeremy