Problems adding a month to X using POSIXlt in R - need to reset value using as.Date(X)

Question

This works for me in R:

# Setting up the first inner while-loop controller, the start of the next water year
  NextH2OYear <- as.POSIXlt(firstDate)
  Next         


        

Answer 1

Here is you can add 1 month to a date in R, using package lubridate:

library(lubridate)
x <- as.POSIXlt("2010-01-31 01:00:00")
month(x) <- month(x) + 1

>x
[1] "2010-03-03 01:00:00 PST"

(note that it processed the addition correctly, as 31st of Feb doesn't exist).