Tag: Steven Hall

More De Revolutionibus Chord Diagrams

I did some additional fiddling with the information I pulled out of Gingerich’s An Annotated Census of Copernicus’s De Revolutionibus. The way I now translate the city location into a country location gives more dependable results. I then separated out the movement of the first and second editions into distinct chord diagrams. I also generated a new diagram for both editions (an updated version of the previous diagram).

Chord diagram showing how first editions of De Rev moved.
Chord diagram showing how first editions of De Rev moved.

As before, these chord diagrams are interactive: you can mouseover (or touch, if you are using a touch device) and get information about each country and each pathway between countries.

The three chord diagrams are available:

And as before, I am indebted to Steven Hall for his tutorials and code. See: