Tag: Cartogram
Geography of Billionaires: Mapping Nationalities and Residency
Forbes recently released an updated list of the world’s billionaires. The listing contains the ranking for 1,226 individuals and families who’s net worth as of March of 2012 was 1 billion USD or more. Since the listings contained both a country of citizenship and residence, this allows for a peek at the geography of billionaires. [...]
Area Cartogram Maps Explored
Area cartogram maps are maps of non-absolute space where the areal extent is in proportion to some measured value. Cartogram maps retain a partially accurate relative location and relative space, but the actual area of the individual polygons features are overrepresented or underrepresented based on the assigned values. Area cartograms are useful for visualizing relativity [...]
First Thematic Maps
Zachary Forest Johnson provides an overview on Indiemaps.com on the first published instances of each of the six most commonly used thematic mapping techniques: choropleth, proportional symbol, dot density, flow, isarithmic, and cartogram. Each technique’s first mapping instance is described along with a scanned sample of the map. In conclusion, Johnson writes: Four of the [...]
