Changing specific column values based on conditions in R

I have following dataframe named ‘Saty’ in R

One_Day	Arrived_Date	Departure_Date
Yes	2022-01-10	NA
No	2021-05-12	2021-06-01
Yes	2021-12-01	2021-12-01
Yes	2022-03-01	NA

I want to modify the dataframe, if the One_Day column value is ‘Yes’, my ‘Arrived_Date’ and ‘Departure_Date’ should be same, like below dataframe.

dataframe
dplyr
frame
if-statement
plyr
sat

One_Day	Arrived_Date	Departure_Date
Yes	2022-01-10	2022-01-10
No	2021-05-12	2021-06-01
Yes	2021-12-01	2021-12-01
Yes	2022-03-01	2022-03-01

How to achieve this by coding in R ?

>Solution :

What you need is an ifelse statement.

library(dplyr)

Saty %>% mutate(Departure_Date = ifelse(One_Day == "Yes", Arrived_Date, Departure_Date))

  One_Day Arrived_Date Departure_Date
1     Yes   2022-01-10     2022-01-10
2      No   2021-05-12     2021-06-01
3     Yes   2021-12-01     2021-12-01
4     Yes   2022-03-01     2022-03-01