r - Get the month from the week of the year

Question

Let's say we have this:

ex <- c('2012-41')

This represent the week 41 from the year 2012. How would I get the month from this?

Since a week can be between two months, I will be interested to get the month when that week started (here October).

Not duplicate to How to extract Month from date in R (do not have a standard date format like %Y-%m-%d).

Answer 1

you could try:

ex <- c('2019-10')

splitDate <- strsplit(ex, "-")

dateNew <- as.Date(paste(splitDate[[1]][1], splitDate[[1]][2], 1, sep="-"), "%Y-%U-%u")

monthSelected <- lubridate::month(dateNew)

3

I hope this helps!