I am working with this dataset:
TPdata:
id Tp1 Sp2 time
A 1 7 08:00:00
B 2 8 09:00:00
C 3 9 18:30:00
D 4 10 20:00:00
E 5 11 08:00:00
F 6 12 09:00:00
I would like to change the entries 08:00:00 in column time to 'early'. I thought this would work but it isn't:
TPdata$time[TPdata$time == 18:30:00] <- "early"
Can anyone help?