calculate_pollutant_ratio: Calculate average pollutant ratios using linear model

In pollylang/aqtrends: Tools for trend analysis of air quality network data

Description

Calculate average pollutant ratios using linear model

Usage

calculate_pollutant_ratio(df.list, avg.time, statistic, sites = FALSE)

Arguments

df.list	List of data frames of observation data for each pollutant in the ratio. First element of list should be data frame for the pollutant which is the numerator in the ratio (second element should be for the denominator pollutant). Both data frames should contain the variables date, site_code, value.
avg.time	Character vector specifying the time period over which to average the data. Option are 'year' or 'month' (to return the annual/monthly average)
statistic	The statistic to use for averaging. Options are 'mean' or 'median'.
sites	Logical indicating whether averaging should be grouped by site (TRUE) or data should be averaged over all sites (FALSE).

Value

Data frame of annual/monthly average concentration data for the pollutant ratio

pollylang/aqtrends documentation built on May 20, 2019, 8:24 p.m.