Subject: ‘Dot Density’
November 10, 2009First Thematic MapsCartographyZachary 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 ... read more |
