cartogram


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cartogram

a map showing the distribution of a population by area.
References in periodicals archive ?
Dorling (1996) first proposed a circle cartogram construction algorithm according to two requirements for an easily comprehensible resultant: 'avoid overlap of circles' and 'keep contiguity of regions as much as possible'.
The conversion of a geographic map into a cartogram reminded the physicists of diffusion--the process by which a gas spreads to fill available space until it has a uniform density throughout.
This method provides an effective way to preprocess a map prior to cartogram construction, but the cartograms produced can have large area errors.
population cartogram would be drawn not according to the size of each state but according to the number of each state's inhabitants.
Wiechel published a cartogram depicting election results from the German Reichstag in 1903 (cited in Eckert 1925).
Dorling (1994) produced representations that transform space and time with his algorithm for cartogram projections.
The continuous cartogram method, for instance, uses variously sized polygon shapes to express differing levels of uncertainty; the shapes tend to merge with one another, creating fuzzy boundaries.
This cartogram gives you a different way of thinking about and understanding the relative population sizes of the states.
We encourage others to experiment with these techniques and further explore cartogram building with the tools we have outlined.
com) which synthesized poll results and displayed predictions on a generalized cartogram.