weather_lag: Weather lag function creator
In UBESP-DCTV/imthcm: Integrated Mdelling Tool - Helath and Cost Modules

Description Usage Arguments Value Functions Examples

The aim of weather_lag is to provide functions to compute the the roll mean of pollutant mean daily concentrations, including necessary NA at the beginning.

weather_lag(x, k, na.rm = TRUE)

weather_lag01(x, na.rm = TRUE)

weather_lag03(x, na.rm = TRUE)

`x`	[num] numerical vector representig a weather daily mean recording
`k`	[int] an integer of lenght one indicating how many days befor the actual (included) has to be considered for the mean
`na.rm`	[lgl] should `NA` be ignored when computed the roll mean? (default is `TRUE`)

a numerical vector of the same lenght of x with the roll mean computed (and the first k - 1 entries filed with NA).

weather_lag01: wrapper function to compute weather_lag with k equal to 2, i.e., the mean for today and yesterday.
weather_lag03: wrapper function to compute weather_lag with k equal to 4, i.e., the mean for today and three prevous day.

imthcm:::weather_lag(c(1, 2, 3, 4, 5, 6), 2)
imthcm:::weather_lag(c(NA, 2, 3, 4, 5, 6), 2)
imthcm:::weather_lag(c(NA, NA, 3, 4, 5, 6), 2)
imthcm:::weather_lag(c(1, NA, 3, 4, 5, 6), 2)
imthcm:::weather_lag(c(1, 2, 3, 4, 5, 6), 4)
imthcm:::weather_lag01(c(1, 2, 3, 4, 5, 6))
imthcm:::weather_lag03(c(1, 2, 3, 4, 5, 6))