March 24, 2020

Getting granular on a national scale

March 24, 2020/ Matthew Edney

Looking at weather.com just now to see if the several inches of snow we received yesterday will melt rapidly, I found an interactive map of reported instances of covid-19 at the county level.

weather.com’s interactive map of reported covid-19 infections. Screen shot taken at about 8:40am (Eastern) on 24 March 2020. Click on map to go to original source.

The system still uses a choropleth to map absolute values, though, but it has a logical and consistent scale and much better granularity than the CDC maps, and much greater geographical coverage than the Maine map by Rosemary Mosher I posted yesterday.

I now see that the New York Times is using county-level graduated circles for their US maps of infection:

[update 25 March 2020] And the Guardian is following the lead of the Grey Lady:

Guardian’s map of US recorded corvid-19 cases. Click on map to go to source.

Mapping as Process

Mapping as Process is a space for me to explore a new approach to understanding mapping and its history. The exploration will eventually contribute to a book of the same name.

Search Mapping as Process:

The books …

Cartography in the European Enlightenment, Volume Four of The History of Cartography, edited by myself and Mary Pedley. Available from the University of Chicago Press, in print and ebook ($500).

Available from the University of Chicago Press in paperback ($30), e-book ($10–30), or cloth ($90).

Some paperback ($38) copies are still available, as well as the ebook, from the University of Chicago Press.