Haklay, M;
(2004)
Map Calculus in GIS: a proposal and demonstration.
In:
INT J GEOGR INF SCI.
(pp. 107 - 125).
TAYLOR & FRANCIS LTD
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Abstract
This paper provides a new representation for fields (continuous surfaces) in Geographical Information Systems (GIS), based on the notion of spatial functions and their combinations. Following Tomlin's (1990) Map Algebra, the term 'Map Calculus' is used for this new representation. In Map Calculus, GIS layers are stored as functions, and new layers can be created by combinations of other functions. This paper explains the principles of Map Calculus and demonstrates the creation of function-based layers and their supporting management mechanism. The proposal is based on Church's (1941) Lambda Calculus and elements of functional computer languages (such as Lisp or Scheme).
| Type: | Proceedings paper |
|---|---|
| Title: | Map Calculus in GIS: a proposal and demonstration |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1080/13658810310001629583 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10973 |
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