Definition
The visualization of spatial constraint databases is an application that reads spatial data from spatial constraint databases, understands the meaning of the data based on the spatial data models, and displays those data as computer graphics to help in cognition, analyzing, and reasoning.
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To display the spatial data in a constraint database system, the system will first transform the vector-based spatial data, which is represented by linear equality and linear inequality constraints in a disjunctive normal form (DNF), into a set of points, segments, and convex polygons, and then associate a color with the individual shapes and project them onto the output devices.
For example, the following constraint tuple represents a triangle. The visualization of spatial constraint databases can display the triangle on a computer through the...
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References
Revesz P (2002) Introduction to constraint databases. Springer, New York
Rigaux P, Scholl M, Segoufin L, Grumbach S (2003) Building a constraint-based spatial database system: model, languages, and implementation. Inf Syst 28(6):563–595
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Wu, S. (2017). Visualization of Spatial Constraint Databases. In: Shekhar, S., Xiong, H., Zhou, X. (eds) Encyclopedia of GIS. Springer, Cham. https://doi.org/10.1007/978-3-319-17885-1_1456
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DOI: https://doi.org/10.1007/978-3-319-17885-1_1456
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Publisher Name: Springer, Cham
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Online ISBN: 978-3-319-17885-1
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