Cartogram is a unique type of map because it combines statistical information with geographic location. Physical or topographical maps show relative area, distance, and terrain, but they do not provide any data about the inhabitants of a place. Cartograms on the other hand take some measurable variable: total population, age of inhabitants, electoral votes, GDP, etc., and then manipulate a place’s area to be sized accordingly. The produced cartogram can really look quite different from the maps of cities, states, countries, and the world that are more recognizable. It all depends on how a cartographer needs or wants to display the information. Cartograms come in all shapes and sizes, literally, and with the continuous advances in technology of Geographic Information System(GIS) software. This post presents a rough idea of how one might create a cartogram using QGIS.
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