Aggregates Observations by time

This function add aggregate cols by `key_time`

Usage

obs_agg(
  dt,
  cols = c("year", "month", "day", "hour", "minute", "second", "time", "time_decimal",
    "value", "latitude", "longitude", "altitude", "pressure", "u", "v", "temperature",
    "type_altitude"),
  by = c("key_time", "site_code", "altitude_final", "type_altitude", "lab_1_abbr",
    "dataset_calibration_scale"),
  fn = "mean",
  verbose = TRUE
)

Arguments

dt

data.table

cols

Character which defines columns to be aggregated

by

String with columns to be aggregated

fn

Function to be applied to the columns, default mean

verbose

logical to show more information

Value

A data.frame with with an index.

Note

By default add column timeUTC based on the input column `key_time`

Examples

if (FALSE) { # \dontrun{
# Do not run
obs <- system.file("data-raw", package = "rtorf")
index <- obs_summary(obs)
dt <- obs_read(index)
} # }