A plotly.js choropleth trace auto-detected by MAIDR. Read as
a bar chart whose categories happen to be places, a map loses everything
spatial, so the regions are laid out by the centroid plotly resolved for
each one while projecting it: the arrows move north, south, east and west
rather than along a list, and the panning follows the longitude. The
shaded quantity takes its name from the colorbar, which is the only place
a map names it.