ggplot geom_bar where x = multiple columns

Question

How can I go about making a bar plot where the X comes from multiple values of a data frame?

Fake data:

data <- data.frame(col1 = rep(c(\"A\", \"         


        

Answer 1

You need to first convert your data frame into a long format, and then use the created variable to set the facet_wrap().

data_long <- tidyr::gather(data, key = type_col, value = categories, -col4)

ggplot(data_long, aes(x = categories, fill = col4)) +
  geom_bar() + 
  facet_wrap(~ type_col, scales = "free_x")