A line of uniform value in a graphical representation. (M. CHISHOLM, 1975, p.62).
Choropleths are used to coordinate series of observations, corresponding to some specified areas, for example population density, or land-use proportions. They allow for the characterization of areas and comparisons between various ones in which different conditions can be summarized, i.e. allow for the emergence of a global meaning for collections of specific data.
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Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]
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