出典:Wiktionary
出典:『Wiktionary』 (2024/09/14 23:40 UTC 版)
From Ancient Greek χώρα (khṓra, “location”) + πλῆθος (plêthos, “a great number”) + English map. First proposed in 1938 by American geographer John Kirtland Wright to mean "quantity in area," although maps of the type have been used since the early 19th century.
choropleth map (plural choropleth maps)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/09 06:57 UTC 版)
A choropleth map (Greek χώρος + πληθαίν:, ("area/region" + "multiply") is a thematic map in which areas are shaded or patterned inwhich shows to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income.