Change values in columns

[jose_perez]

So, I have a dataframe like this: df<-data.frame("Year" = c(2021,2021,2021), "Value" = c(358,723,287), "Country" = c("FR","USA","IE"))

I want to change the values in "Country" column for the full name: France, United States, Ireland. How can I achieve this? Thanks.

[Hlynur]

One way would be to use the mutate function from the dplyr package to change the column. You could then recode the values with the recode function (also from dplyr) in the following way.

df <- data.frame("Year" = c(2021,2021,2021),
                 "Value" = c(358,723,287),
                 "Country" = c("FR","USA","IE"))

#install.packages("dplyr") #if you don't have dplyr
library(dplyr)
#> 
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#> 
#>     filter, lag
#> The following objects are masked from 'package:base':
#> 
#>     intersect, setdiff, setequal, union
mutate(df,
       Country = recode(Country,
                        "FR" = "France",
                        "USA" = "United States",
                        "IE" = "Ireland"))
#>   Year Value       Country
#> 1 2021   358        France
#> 2 2021   723 United States
#> 3 2021   287       Ireland

^{Created on 2021-04-15 by the reprex package (v0.3.0)}

[jose_perez]

Great Hlynur, works perfectly. Thanks