Cleaning up the bars
The changes we made to the last plot are great and improved it immensely, but we can go further!
We seem to have a few countries that have zero counts for the cases. Let's get rid of these to free up even more space for the country names to breath.
In addition, let's get rid of the unnecessary horizontal lines that are cluttering up the background.
The data frame amr_pertussis
that we made in the last exercise is already loaded for you.
This exercise is part of the course
Visualization Best Practices in R
Exercise instructions
- Add a
filter()
toamr_pertussis
so we only have countries that had more than zerocases
. - Using the
theme()
function, remove the horizontal grid linespanel.grid.major.y
from the background.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
amr_pertussis %>%
# filter to countries that had > 0 cases.
___ %>%
ggplot(aes(x = reorder(country, cases), y = cases)) +
geom_col() +
coord_flip() +
theme(
# get rid of the 'major' y grid lines
___
)