Count the maximum number of days VALUE exceeds a threshold (above or below)

Usage

count_max_event_days(
  dat,
  threshold,
  ...,
  less_than = TRUE,
  summary_table = TRUE
)

dat: Dataframe that must include columns VALUE (numeric) and TIMESTAMP (POSIXct), and a column for each grouping variable in ....
threshold: Value to cross to trigger exceedance (exclusive)
...: Names of columns that should be used as grouping variables (not quoted), e.g. DEPTH, YEAR.
less_than: Logical argument. If TRUE (the default), function will identify events when VALUE was BELOW threshold; if FALSE, will identify events when VALUE was ABOVE the threshold.
summary_table: Logical argument. If TRUE (the default), will return summary table with maximum event duration for each grouping variable. If FALSE, will return table with all exceedance events for each grouping variable.

Returns summary table with maximum event duration for each grouping variable OR a table with all exceedance events for each grouping variable.