John Snow's cholera map


Using the ability to create a UNION between two data tables in CartoDB and the client side style features, we are able to quickly combine different data-types in interesting ways. Here we use data released online to show our take on the map from John Snow's original research on the 1854 cholera outbreak.

Related resources: CartoDB.js, Join Two Tables.


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CartoDB is also used by

  • Harvard
  • NASA
  • Convention on Biological Diversity
  • Wall Street Journal
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