R/ppm2ug.R

In mengluchu/APMtools: statistical air pollution mapping tools

#'@title convert ppm to ug/m3
#'@param df  values in ppm
#'@return air pollutant in ug/m3
#'@details ug/m3 = ppm * 1000 * 1.91
#'@examples
#'\donttest{
#'library(countrycode)
#'merged$value_mean = ifelse(merged$country%in%countrywithppm,ppm2ug(merged$value_mean), merged$value_mean )
#'}
#'@export

ppm2ug = function(ppm) {
    ppm * 1000 * 1.91
}