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What is Generalisation?
The International Cartographic Association defines Cartographic Generalisation as "the selection and simplified representation of detail appropriate to the scale and/or the purpose of a map" (ICA 1967).
More generally, the objective of generalisation is to supply information on a content and detail level corresponding to the necessary information for correct geographical reasoning.
Generalisation inputs are :
- The needs
- The geographical data: density, distribution, size, diversity etc.
- The readability rules
- The means: time, money, technique etc.
Show the Effect of Generalisation on a Map.
Select the magnifying glass (black circle) with the mouse (continuous left click), and show the differences in level of detail between the basemap (1:250 000) and the magnifying glass (1:100 000).
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