Farmers Markets play a critical role
in the U.S. food system, and I wanted to see how they are distributed across the country. To explore different visualization options, I created two maps with the same dataset, courtesy of USDA.
Using Tableau, I visualized every individual market, allowing users to mouseover for their dots for more info—name, address, website, and available goods—and filter them by common food item with the panel on the right. For the best results, maximize the map to full screen on a computer, or click on the Tableau logo to open it in a new tab.
Using CartoDB, I chose instead to look at the aggregate view, visualizing the density of markets across the country.
It's interesting to see how small tweaks in visual display change the overall narrative of the data. Whereas the Tableau map allows users to drill down into the details and identify which markets sell vegetables versus fruits, the Carto map zooms out to show which U.S. regions have less access to locally-grown produce.
If I were to continue my data exploration, I would look to see how the market distribution correlates with population, income, and other factors.