Pie charts have a rich history. William Playfair first used them in 1801, and despite decades of criticism from data visualization purists, they remain one of the most instantly recognizable ways to show proportions. Today we'll put them to work in a decidedly non-standard way: placing custom-built pie charts directly on a geographic map to reveal where Americans fly.
You can find the companion notebook on the Visualizarion for Data Science GitHub repository:
Visualization For Science GitHub
The Bureau of Transportation Statistics provides a wide range of datasets on US and global transportation infrastructure. We have used it previously here, here, and here.
The first step in our analysis is to extract the Top destinations for each state. We sort the outgoing destination of each state and extract the Top n:
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