Produce maps of nations in the world or of the United States which are annotated according to any numeric data with colored regions or with circles of various sizes and colors.

Pros & Cons

GeoMaps can make this map of 2008 United States populations (log-scaled) in an Albers equal-area conic projection:

Here it is in a Lambert conformal conic projection:

And here it is in a Mercator projection:

It can also make this map of the world's 25 most populous countries, illustrating also their gross domestic products (both dimensions log-scaled):

Implementation Details

For region coloring annotations, GeoMaps expects a table with:

For circle annotations, GeoMaps expects a table with numeric attributes that:

Usage Hints

Russell Duhon's Python script paved the way for the GeoMaps algorithm.