Part 3: Merging the two datasets

Question 6: Ensure the zip codes in the map and ED visits datasets are in columns with identical names

Question 7: Join the map and ED visits datasets into your main dataset Pay attention to the order of the inner join

Question 8: Map the number of visits in each ZIP code

• Produce a color-coded map of NYC where the color of each ZIP codes the number of visits made in each ZIP

• The output should look as below

• Tip: The order of the inner_join you performed in Question 5 changed the structure of the resulting dataframe. To make the structure amenable to plot(), do the join again in the reverse order.