The Cholera Map in 3D

August 11, 2019

I am fairly sure I have mentioned before my great interest in the way that data can be graphically visualized to create new awareness, or simply to explain something more accurately.  I have even tried to create some myself when I thought they would add value.

One of the most famous early examples of a data visualization leading to political action was Dr. John Snow’s investigation into a cholera outbreak in London in 1854.  By tracking the deaths in one area of Soho, he traced the infection back to a single well that had been polluted.  The map he created to illustrate the specific spread of the disease was instrumental in launching the new science of epidemiology.

Snow’s map was, of course, a two-dimensional display, with all the limits imposed by that technology.  However, the famous map has now been digitized and turned into a 3D object that can be viewed from any angle using the tools on the right of the screen.

This very simple display shows off the potential of 3D mapping very well.

Thanks to the Spatial Awareness newsletter for the tip.

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Image: Salsbury Blossoms

August 11, 2019