Convert date character to POSIXct

General
1

Hello Everyone.

I am importing data from a CSV file that has a date column. When I import the data and use the str() command, I get the following:

str(mdata)
$ date: chr "2020/8/14 12:09:00" "2020/8/14 12:10:00" "2020/8/14 12:11:00" "2020/8/14 12:12:00" ...

I want to convert the data to POSIXct instead of chr.

When I use the following command:
mdata$date <- as.POSIXct(farmdata$date, format = "%Y-%m-%d %H:%M:%S", tx = "GMT")

This is what I get

str(mdata)
$ date: POSIXct, format: NA NA NA NA ..

Any idea why the dates are converted to NA?

Thank you,
Steve

2

Your data have slashes between the components of the dates so your format argument should have the same. Also, notice that I changed the tx argument to be tz.

as.POSIXct(farmdata$date, format = "%Y/%m/%d %H:%M:%S", tz = "GMT")
3

Thank you! That worked!