Posts by Margaret Pearce

Discovering Charles Minard: Information Design, Numerical Magnitudes, and a New Understanding of an Old Technique

The collections of the Map Division of The New York Public Library contain a rare gem of information graphics and cartographic design: a copy of Charles Minard's self-published folio of 1861, Des tableaux graphiques et des cartes figuratives.

Digging Up the Nineteenth-Century Roots of Thematic Map Techniques

The mission of my Short-Term Fellowship was to research the development of thematic map technique in the West: the way that proportional circle, flow line, isopleth, choropleth, dasymetric, dot density, and cartogram techniques were invented and developed in Europe and the United States during the nineteenth century.