Suppose you have POSIx column in your data frame and you see value as
2016-01-06 19:17:38 in table view and you want to see the data in
%d-%m-%Y format. So here is how you can do it.
you can use as.character with
format argument like below.
as.character(X4, format = "%d-%m-%Y") like below.
This changes the X4 columns like this in (%d-%m-%Y) format.