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