[AM14-2] Approaches to point, line, and area generalization

Techniques that support the generalisation of map content when changing to smaller map scales. These include line simplification, object selection, etc.

External resources

• Buttenfield, B. P., & McMaster, R. B. (Eds.). (1991). Map Generalization: making rules for knowledge representation. New York: John Wiley and Sons.

Learning outcomes

• 1911 - Describe the basic forms of generalization used in applications in addition to cartography (e.g., selection, simplification)

  Describe the basic forms of generalization used in applications in addition to cartography (e.g., selection, simplification)

• 1912 - Discuss the possible effects on topological integrity of generalizing data sets

  Discuss the possible effects on topological integrity of generalizing data sets

• 1913 - Explain why areal generalization is more difficult than line simplification

  Explain why areal generalization is more difficult than line simplification

• 1914 - Explain the logic of the Douglas-Peucker line simplification algorithm

  Explain the logic of the Douglas-Peucker line simplification algorithm 

• 1915 - Explain the pitfalls of using data generalized for small scale display in a large scale application

  Explain the pitfalls of using data generalized for small scale display in a large scale application

   

• 1916 - Design an experiment that allows one to evaluate the effect of traditional approaches of cartographic generalization on the quality of digital data sets created from analog originals

  Design an experiment that allows one to evaluate the effect of traditional approaches of cartographic generalization on the quality of digital data sets created from analog originals

• 1917 - Evaluate various line simplification algorithms by their usefulness in different applications

  Evaluate various line simplification algorithms by their usefulness in different applications

Self assessment

Outgoing relations

• [AM14-2] Approaches to point, line, and area generalization subclassof [AM14] Generalization and aggregation

Contributors

• Rob Lemmens
  University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC)
  https://research.utwente.nl/en/persons/rob-lemmens