calculate.stats: Some functions to calculate statistics

Description

Calculate data set statistics for selected time intervals.

Usage

calcDateRangeStat(
  data,
  from = NULL,
  to = NULL,
  stat = NULL,
  pollutant = NULL,
  ...,
  method = 2
)
calcRollingDateRangeStat(
  data,
  range = "year",
  res = "day",
  stat = NULL,
  pollutant = NULL,
  from = NULL,
  to = NULL,
  ...,
  method = 2
)

Value

These functions return data.frames of function outputs.

Arguments

data: (data.frame, tibble, etc) Data set containing data statistic to be calculated for, and date column of date/time records.
from: (various) Start date(s) to subsample from when calculating statistic, by default end of supplied data date range.
to: (various) End date(s) to subsample to when calculating statistic, by default end of supplied data date range.
stat: (function) Statistic to be applied to selected data, by default mean(pollutant, na.rm=TRUE). NB: This should be a function that works on vectors in the form function(x).
pollutant: (character) The name(s) of data-series to analyse in data, by default all columns in supplied data except date.
...: extra arguments.
method: (numeric) Method to use when calculating statistic. Currently 1 (using base R), 2 (using dplyr), 3 (using data.table), and 4 (using dplyr and purrr)
range: (character) For calcRollingDateRange, the range the rolling date windows, by default 'year' for annual statistic calculations.
res: (character) For calcRollingDateRange, the resolution to calculate the rolling statistic at, by default 'day' to calculate this once per day.