If there’s one thing that’s true about COVID-19, it’s that the scale of direct transmission is local. Which is to say that to acquire the virus you must come in personal contact with it. The safe zone ...

This example produces a choropleth (2D) map that shows the total number of hazardous waste sites in each state in 1997. Since the DISCRETE option is not used, the response variable is assumed to have ...

Choropleth maps of the anti-HCV (A), anti-HBc (B) and HBsAg (C) prevalence and absolute number of cases in Ukraine during ...