Category "posixct"

How to convert timestamp to date in each row of a column in R?

I have a column which list timestamps and I am in need of converting that to corresponding date for all rows in that column. Listing the code below app21_csv &

data.table join with date

hello im trying to extract some id with a group and Date in range > d1 id group Date 1: 1 A 2017-07-02 2: 2 A 2017-07-04 3: 3 A