I am trying to filter the data in R by omitting any raw in budget column with a currency other than us dollars

Question

I tried this but it's not working.

horror_movies %>% dplyr::filter(grepl("$", budget))

Answer 1

You need to add fixed=TRUE as an argument to grepl. For example...

horror_movies[grepl('$', horror_movies$budget, fixed=TRUE),]

See this answer for a detailed explanation.