Helper function for converting cumulative splits to lap splits
splits_to_lap_helper_recalc(
df,
i,
split_cols = split_cols,
threshold = threshold
)
a list of data frames with all splits in lap format for a particular event, each with a single split column converted to lap format
a data frame containing splits in cumulative format
list of values to iterate along
list of columns containing splits
a numeric value above which a split is taken to be cumulative