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Within geographic information science, scale has several meanings. To the general public, geographic scale may be most frequently understood in the sense of map scale, shown as a scale bar on a map. More generally, scale is the relationship between an abstract respresentation of something and the real thing, whether this is planet earth or a building plan. From a geographic information science perspective, the most important aspect of scale is how it affects the analysis of spatial data. This entry therefore starts with a definition of map scale, moves on to a discussion of a more generic use of the notion of scale and how it affects geographic analysis, and ends with an overview of one theoretical approach to understanding phenomena over multiple scales.

Scale ...

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