期刊
ANNALS OF THE ASSOCIATION OF AMERICAN GEOGRAPHERS
卷 94, 期 1, 页码 58-73出版社
BLACKWELL PUBLISHERS
DOI: 10.1111/j.1467-8306.2004.09401004.x
关键词
anamorphoses; cartograms; map distortion; map projections; quasiconformal
类别
The notion of a cartogram is reviewed. Then, based on a presentation from the 1960s, a direct and simple introduction is given to the design of a computer algorithm for the construction of contiguous value-by-area cartograms. As an example, a table of latitude/longitude to rectangular plane coordinates is included for a cartogram of the United States, along with Tissot's measures for this map projection. This is followed by a short review of the subsequent history of the subject and includes citation of algorithms proposed by others. In contrast to the usual geographic map, the most common use of cartograms is solely for the display and emphasis of a geographic distribution. A second use is in analysis, as a nomograph or problem-solving device similar in use to Mercator's projection, or in the transform-solve-invert paradigm. Recent innovations by computer scientists modify the objective and suggest variation similar to Airy's (1861) balance of errors idea for map projections.
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