Time-average a `metamet` object — time

Aggregates meteorological data in a `metamet` object over specified time intervals. The function handles different variable types appropriately: precipitation is summed, and other variables (temperature, wind speed, etc.) are averaged. Wind direction is vector-averaged if present.

Usage

time_average(
  mm_in,
  avg.time = "30 min",
  report_end_interval = TRUE,
  extra_rows = 0
)

Arguments

mm_in: A `metamet` object containing at least `dt`, `dt_meta`, and `dt_site`.
avg.time: Time interval for averaging; passed to `openair::timeAverage()`. Default is `"30 min"`.
report_end_interval: Logical. If `TRUE` (default), the returned timestamps represent the end of the averaging interval. If `FALSE`, timestamps represent the start of the interval.
extra_rows: Integer A number of time intervals to add before and after the data; usually truncated after averaging.

Value

A `metamet` object with time-averaged `dt`, `dt_qc`, and `dt_ref` tables (where applicable). The object structure is preserved.

Details

The function uses `openair::timeAverage()` for the aggregation and preserves the structure of the input object, including quality control (`dt_qc`) and reference (`dt_ref`) tables if present.

Examples

# mm_avg <- time_average(mm, avg.time = "1 hour")