Looping through vector of dates in R drops class info

Question

Here is my example.

my_df <- data.frame(col_1 = c(1,2), 
col_2 = c(as.Date(\'2018-11-11\'), as.Date(\'2016-01-01\')))
dates_list <- my_df$col_2
for(el in d         


        

Answer 1

The cause of the problem could be that dates_list <- my_df$col_2 coerces the column to a date vector:

dates_list <- my_df$col_2
class(dates_list)
> [1] "Date"

so another solution would be to resolve this, as follows:

dates_list <- my_df["col_2"]
class(dates_list)
[1] "data.frame"

for(el in dates_list){
    print(el)
}
[1] "2018-11-11" "2016-01-01"