library(dplyr)
df <- tibble(
'name' = c('?', 'B', '?'),
'location' = c('x','?','z'),
'age' = c(10, 12, '?')
)
df
#> # A tibble: 3 x 3
#> name location age
#> <chr> <chr> <chr>
#> 1 ? x 10
#> 2 B ? 12
#> 3 ? z ?
How do I replace all the ?
with NA
?