25.16 Combining with other tidyverse
We can combine a dash of data manipulation with ggplot2, as seen below.
You’ll notice we have to use a new operator here, :=
, because we are generating the variable name based on user-supplied data. Variable names go on the left hand side of =
, but R’s syntax doesn’t allow anything to the left of =
except for a single literal name.
sorted_bars <- function(df, var) {
df |>
mutate({{ var }} := fct_rev(fct_infreq({{ var }}))) |>
ggplot(aes(y = {{ var }})) +
geom_bar()
}
diamonds |>
sorted_bars(clarity)