Discover and read the best of Twitter Threads about #choropleth
Most recents (1)
I'm about to launch at ten part thread on making #maps of #Coronavirus. Hang on to your #COVID19 facemasks 0/10 
Coronavirus map tips 1/10 use an appropriate #projection. It's for #thematic data so needs to be equal area. Web Mercator does not support the map's purpose. Distortions lead to people over- or under-estimating size of areas relative to one another.
Coronavirus map tips 2/10 don't map totals on a #choropleth. Impact of differently sized regions & population densities makes comparison between areas meaningless. Totals can heighten fear. 65,000 seems an awful lot. Do 5 provinces really belong in the same upper data class?
