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Update eventhandling.jl #247

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22 changes: 14 additions & 8 deletions src/eventhandling.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,19 @@
"""
copy field-info from source to closest target

`match_fun` can be "closest", "s before t" (eq. "t after s") or "t before s" (eq. "s after t")
## Arguments
- `evts::DataFrame`
- `fromTo::Pair` specifies from which entry to which entry to copy, e.g. "source"=>"target"
- `field::String` name of the column that contains the data to be copied to other events. Can be a `pair` in order to copy to a new column and thereby not replace any entries
## Keyword arguments
- `match_fun::String` can be "closest", "s before t" (eq. "t after s") or "t before s" (eq. "s after t") - where s = source, and t = target
- `column::String` (default `"trial_type"`) the column where the `fromTo` source and target events can be found in

## Example
julia> # copy reaction time values from button press to closest stimulus immediately before button press
julia> copy_eventinfo!(evts,"button"=>"stimulus",:reaction_time;match_fun="s after t")
Copy reaction time values from button press to closest stimulus immediately before button press
julia> copy_eventinfo!(evts,"button"=>"stimulus","reaction_time";match_fun="s after t")
"""
function copy_eventinfo!(evts, fromTo, field; match_fun = "closest")
function copy_eventinfo!(evts, fromTo::Pair, field; match_fun = "closest",column="trial_type")

source = fromTo.first
target = fromTo.second
Expand All @@ -20,11 +26,11 @@ function copy_eventinfo!(evts, fromTo, field; match_fun = "closest")
source_field = field
target_field = field
end
source_ix = findall(isequal(source), evts.trial_type)
target_ix = findall(isequal(target), evts.trial_type)
source_ix = findall(isequal(source), evts[:,column])
target_ix = findall(isequal(target), evts[:,column])

isempty(source_ix) && error("couldnt find source entries ($source) in evts.trial_type")
isempty(target_ix) && error("couldnt find target entries ($target) in evts.trial_type")
isempty(source_ix) && error("couldnt find source entries ($source) in evts.$column")
isempty(target_ix) && error("couldnt find target entries ($target) in evts.$column")

# for some matching functions we want to find the minimum, but no negative number
filter_greaterzero = x -> x >= 0 ? x : Inf
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