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Let's flip some axes

First, we can practice rotating a plot. Provided is code that makes a bar plot of the number of cases of pertussis in the Americas region (AMR) in 1980. You will notice it's almost unreadable.

First, to help see patterns that may be in the data, reorder() the columns in descending order of cases.

Next, let's coord_flip() the axes to make it possible to read the country names.

Questo esercizio fa parte del corso

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Istruzioni dell'esercizio

  • reorder() the x-axis by descending order of cases
  • Add coord_flip() to the plot to swap x and y-axes.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

amr_pertussis <- who_disease %>% 
	filter(   # filter data to our desired subset
		region == 'AMR', 
		year == 1980, 
		disease == 'pertussis'
	)
# Set x axis as country ordered with respect to cases. 
ggplot(amr_pertussis, aes(x = ___, y = cases)) +
	geom_col() +
	# flip axes
	___
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